bump version to 0.1.10~2

Default value of 0 may be too harsh, especially given random Rx/Tx delay
in 1 SPS receive mode.

CommonLibs/Interthread.h

@@ -1,6 +1,5 @@
 /*
 * Copyright 2008, 2011 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 * This software is distributed under the terms of the GNU Affero Public License.
 * See the COPYING file in the main directory for details.
@@ -42,7 +41,6 @@
 //@{
 
 
-// UNUSED in osmo-trx
 /** Pointer FIFO for interthread operations.  */
 // (pat) The elements in the queue are type T*, and
 // the Fifo class implements the underlying queue.
@@ -100,7 +98,7 @@ template <class T, class Fifo=PointerFIFO> class InterthreadQueue {
 	{
 		ScopedLock lock(mLock);
 		T* retVal = (T*)mQ.get();
-		if (retVal==NULL) {
+		while (retVal==NULL) {
 			mWriteSignal.wait(mLock);
 			retVal = (T*)mQ.get();
 		}
@@ -157,7 +155,6 @@ template <class T, class Fifo=PointerFIFO> class InterthreadQueue {
 	}
 };
 
-// UNUSED in osmo-trx
 // (pat) Identical to above but with the threading problem fixed.
 template <class T, class Fifo=PointerFIFO> class InterthreadQueue2 {
 
@@ -279,7 +276,6 @@ template <class T, class Fifo=PointerFIFO> class InterthreadQueue2 {
 
 
 
-// UNUSED in osmo-trx
 /** Pointer FIFO for interthread operations.  */
 template <class T> class InterthreadQueueWithWait {
 
@@ -384,7 +380,7 @@ template <class T> class InterthreadQueueWithWait {
 
 
 
-// UNUSED in osmo-trx
+
 /** Thread-safe map of pointers to class D, keyed by class K. */
 template <class K, class D > class InterthreadMap {
 
@@ -648,7 +644,7 @@ template <class T, class C = std::vector<T*>, class Cmp = PointerCompare<T> > cl
 
 
 
-// UNUSED in osmo-trx
+
 class Semaphore {
 
 	private:

CommonLibs/InterthreadTest.cpp

@@ -1,6 +1,5 @@
 /*
 * Copyright 2008 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 *
 * This software is distributed under the terms of the GNU Affero Public License.
@@ -28,91 +27,66 @@
 
 #include "Threads.h"
 #include "Interthread.h"
-#include "Configuration.h"
 #include <iostream>
 
 using namespace std;
 
-ConfigurationTable gConfig;
 
 InterthreadQueue<int> gQ;
 InterthreadMap<int,int> gMap;
 
-class QueueWriter : public Thread
+void* qWriter(void*)
 {
-public:
-	QueueWriter() : Thread("QueueWriter") {}
-
-protected:
-	virtual void runThread()
-	{
-		int *p;
-		for (int i=0; i<20; i++) {
-			p = new int;
-			*p = i;
-			COUT("queue write " << *p);
-			gQ.write(p);
-			msleep(1);
-		}
+	int *p;
+	for (int i=0; i<20; i++) {
 		p = new int;
-		*p = -1;
+		*p = i;
+		COUT("queue write " << *p);
 		gQ.write(p);
+		if (random()%2) sleep(1);
 	}
-};
+	p = new int;
+	*p = -1;
+	gQ.write(p);
+	return NULL;
+}
 
-class QueueReader : public Thread
+void* qReader(void*)
 {
-public:
-	QueueReader() : Thread("QueueReader") {}
-
-protected:
-	virtual void runThread()
-	{
-		bool done = false;
-		while (!done) {
-			int *p = gQ.read();
-			COUT("queue read " << *p);
-			if (*p<0) done=true;
-			delete p;
-		}
+	bool done = false;
+	while (!done) {
+		int *p = gQ.read();
+		COUT("queue read " << *p);
+		if (*p<0) done=true;
+		delete p;
 	}
-};
+	return NULL;
+}
 
 
-class MapWriter : public Thread
+void* mapWriter(void*)
 {
-public:
-	MapWriter() : Thread("MapWriter") {}
-
-protected:
-	virtual void runThread()
-	{
-		int *p;
-		for (int i=0; i<20; i++) {
-			p = new int;
-			*p = i;
-			COUT("map write " << *p);
-			gMap.write(i,p);
-			msleep(1);
-		}
+	int *p;
+	for (int i=0; i<20; i++) {
+		p = new int;
+		*p = i;
+		COUT("map write " << *p);
+		gMap.write(i,p);
+		if (random()%2) sleep(1);
 	}
-};
+	return NULL;
+}
 
-class MapReader : public Thread
+void* mapReader(void*)
 {
-public:
-	MapReader() : Thread("MapReader") {}
-
-protected:
-	virtual void runThread()
-	{
-		for (int i=0; i<20; i++) {
-			int *p = gMap.read(i);
-			COUT("map read " << *p);
-			// InterthreadMap will delete the pointers
-		}
+	for (int i=0; i<20; i++) {
+		int *p = gMap.read(i);
+		COUT("map read " << *p);
+		// InterthreadMap will delete the pointers
+		// delete p;
 	}
-};
+	return NULL;
+}
 
 
 
@@ -121,25 +95,20 @@ protected:
 
 int main(int argc, char *argv[])
 {
-	COUT("TEST 1: InterthreadQueue")
-	QueueReader qReaderThread;
-	QueueWriter qWriterThread;
-	qReaderThread.startThread();
-	qWriterThread.startThread();
-	// stopThread() will wait for a thread to stop for 5 seconds, which
-	// is more than enough for this test to finish.
-	qReaderThread.stopThread();
-	qWriterThread.stopThread();
+	Thread qReaderThread;
+	qReaderThread.start(qReader,NULL);
+	Thread mapReaderThread;
+	mapReaderThread.start(mapReader,NULL);
 
-	COUT("TEST 2: InterthreadMap")
-	MapReader mapReaderThread;
-	mapReaderThread.startThread();
-	MapWriter mapWriterThread;
-	mapWriterThread.startThread();
-	// stopThread() will wait for a thread to stop for 5 seconds, which
-	// is more than enough for this test to finish.
-	mapReaderThread.stopThread();
-	mapWriterThread.stopThread();
+	Thread qWriterThread;
+	qWriterThread.start(qWriter,NULL);
+	Thread mapWriterThread;
+	mapWriterThread.start(mapWriter,NULL);
+
+	qReaderThread.join();
+	qWriterThread.join();
+	mapReaderThread.join();
+	mapWriterThread.join();
 }
 
 

CommonLibs/Logger.cpp

@@ -38,6 +38,14 @@
 
 using namespace std;
 
+// Switches to enable/disable logging targets
+// MUST BE DEFINED BEFORE gConfig FOR gLogEarly() TO WORK CORRECTLY
+bool gLogToConsole = true;
+bool gLogToSyslog = false;
+FILE *gLogToFile = NULL;
+Mutex gLogToLock;
+
+
 // Reference to a global config table, used all over the system.
 extern ConfigurationTable gConfig;
 
@@ -67,9 +75,6 @@ const char *levelNames[] = {
 	"EMERG", "ALERT", "CRIT", "ERR", "WARNING", "NOTICE", "INFO", "DEBUG"
 };
 int numLevels = 8;
-bool gLogToConsole = 0;
-FILE *gLogToFile = NULL;
-Mutex gLogToLock;
 
 
 int levelStringToInt(const string& name)
@@ -192,18 +197,20 @@ Log::~Log()
 	if (mDummyInit) return;
 	// Anything at or above LOG_CRIT is an "alarm".
 	// Save alarms in the local list and echo them to stderr.
-	if (mPriority <= LOG_CRIT) {
+	if (mPriority <= LOG_ERR) {
 		if (sLoggerInited) addAlarm(mStream.str().c_str());
 		cerr << mStream.str() << endl;
 	}
-	// Current logging level was already checked by the macro.
-	// So just log.
-	syslog(mPriority, "%s", mStream.str().c_str());
-	// pat added for easy debugging.
+	// Current logging level was already checked by the macro. So just log.
+	// Log to syslog
+	if (gLogToSyslog) {
+		syslog(mPriority, "%s", mStream.str().c_str());
+	}
+	// Log to file and console
 	if (gLogToConsole||gLogToFile) {
 		int mlen = mStream.str().size();
 		int neednl = (mlen==0 || mStream.str()[mlen-1] != '\n');
-		gLogToLock.lock();
+		ScopedLock lock(gLogToLock);
 		if (gLogToConsole) {
 			// The COUT() macro prevents messages from stomping each other but adds uninteresting thread numbers,
 			// so just use std::cout.
@@ -215,7 +222,6 @@ Log::~Log()
 			if (neednl) {fputc('\n',gLogToFile);}
 			fflush(gLogToFile);
 		}
-		gLogToLock.unlock();
 	}
 }
 
@@ -243,10 +249,9 @@ void gLogInit(const char* name, const char* level, int facility)
 		gConfig.set("Log.Level",level);
 	}
 
-	// Pat added, tired of the syslog facility.
 	// Both the transceiver and OpenBTS use this same facility, but only OpenBTS/OpenNodeB may use this log file:
 	string str = gConfig.getStr("Log.File");
-	if (gLogToFile==0 && str.length() && 0==strncmp(gCmdName,"Open",4)) {
+	if (gLogToFile==NULL && str.length() && 0==strncmp(gCmdName,"Open",4)) {
 		const char *fn = str.c_str();
 		if (fn && *fn && strlen(fn)>3) {	// strlen because a garbage char is getting in sometimes.
 			gLogToFile = fopen(fn,"w"); // New log file each time we start.
@@ -268,9 +273,32 @@ void gLogInit(const char* name, const char* level, int facility)
 void gLogEarly(int level, const char *fmt, ...)
 {
 	va_list args;
- 
+
 	va_start(args, fmt);
-	vsyslog(level | LOG_USER, fmt, args);
+
+	if (gLogToSyslog) {
+		va_list args_copy;
+		va_copy(args_copy, args);
+		vsyslog(level | LOG_USER, fmt, args_copy);
+		va_end(args_copy);
+	}
+
+	if (gLogToConsole) {
+		va_list args_copy;
+		va_copy(args_copy, args);
+		vprintf(fmt, args_copy);
+		printf("\n");
+		va_end(args_copy);
+	}
+
+	if (gLogToFile) {
+		va_list args_copy;
+		va_copy(args_copy, args);
+		vfprintf(gLogToFile, fmt, args_copy);
+		fprintf(gLogToFile, "\n");
+		va_end(args_copy);
+	}
+
 	va_end(args);
 }
 

CommonLibs/Logger.h

@@ -116,7 +116,8 @@ class Log {
 
 	std::ostringstream& get();
 };
-extern bool gLogToConsole;	// Pat added for easy debugging.
+extern bool gLogToConsole;	// Output log messages to stdout
+extern bool gLogToSyslog;	// Output log messages to syslog
 
 
 

CommonLibs/Makefile.am

@@ -44,7 +44,6 @@ libcommon_la_SOURCES = \
 	Utils.cpp
 
 noinst_PROGRAMS = \
-	ThreadsTest \
 	BitVectorTest \
 	InterthreadTest \
 	SocketsTest \
@@ -81,16 +80,12 @@ URLEncodeTest_LDADD = libcommon.la
 BitVectorTest_SOURCES = BitVectorTest.cpp
 BitVectorTest_LDADD = libcommon.la $(SQLITE_LA)
 
-ThreadsTest_SOURCES = ThreadsTest.cpp
-ThreadsTest_LDADD = libcommon.la $(SQLITE_LA)
-ThreadsTest_LDFLAGS = -lpthread
-
 InterthreadTest_SOURCES = InterthreadTest.cpp
-InterthreadTest_LDADD = libcommon.la $(SQLITE_LA)
+InterthreadTest_LDADD = libcommon.la
 InterthreadTest_LDFLAGS = -lpthread
 
 SocketsTest_SOURCES = SocketsTest.cpp
-SocketsTest_LDADD = libcommon.la $(SQLITE_LA)
+SocketsTest_LDADD = libcommon.la
 SocketsTest_LDFLAGS = -lpthread
 
 TimevalTest_SOURCES = TimevalTest.cpp

CommonLibs/Sockets.cpp

@@ -1,6 +1,5 @@
 /*
 * Copyright 2008, 2010 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 *
 * This software is distributed under the terms of the GNU Affero Public License.
@@ -130,11 +129,6 @@ void DatagramSocket::close()
 	::close(mSocketFD);
 }
 
-void DatagramSocket::shutdown()
-{
-  ::shutdown(mSocketFD, SHUT_RDWR);
-}
-
 
 DatagramSocket::~DatagramSocket()
 {

CommonLibs/Sockets.h

@@ -1,6 +1,5 @@
 /*
 * Copyright 2008, 2010 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 * This software is distributed under the terms of the GNU Affero Public License.
 * See the COPYING file in the main directory for details.
@@ -135,11 +134,6 @@ public:
 	/** Close the socket. */
 	void close();
 
-  /** Shutdown the socket without destroying the descriptor
-   *  Use this to interrupt blocking read()
-   */
-  void shutdown();
-
 };
 
 

CommonLibs/SocketsTest.cpp

@@ -1,6 +1,5 @@
 /*
 * Copyright 2008 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 *
 * This software is distributed under the terms of the GNU Affero Public License.
@@ -29,73 +28,59 @@
 
 #include "Sockets.h"
 #include "Threads.h"
-#include "Configuration.h"
-#include "Timeval.h"
+#include <stdio.h>
 #include <stdlib.h>
 
-ConfigurationTable gConfig;
 
 static const int gNumToSend = 10;
 
 
-class TestReaderIP : public Thread
+void *testReaderIP(void *)
 {
-public:
-	TestReaderIP() : Thread("TestReaderIP") {}
-
-protected:
-	virtual void runThread()
-	{
-		UDPSocket readSocket(5934, "localhost", 5061);
-		readSocket.nonblocking();
-		int rc = 0;
-		while (rc<gNumToSend) {
-			char buf[MAX_UDP_LENGTH];
-			int count = readSocket.read(buf);
-			if (count>0) {
-				COUT("IP read: " << buf);
-				rc++;
-			} else {
-				COUT("IP sleeping...");
-				sleep(2);
-			}
+	UDPSocket readSocket(5934, "localhost", 5061);
+	readSocket.nonblocking();
+	int rc = 0;
+	while (rc<gNumToSend) {
+		char buf[MAX_UDP_LENGTH];
+		int count = readSocket.read(buf);
+		if (count>0) {
+			COUT("read: " << buf);
+			rc++;
+		} else {
+			sleep(2);
 		}
 	}
-};
+	return NULL;
+}
 
-class TestReaderUnix : public Thread
+
+
+void *testReaderUnix(void *)
 {
-public:
-	TestReaderUnix() : Thread("TestReaderUnix") {}
-
-protected:
-	virtual void runThread()
-	{
-		UDDSocket readSocket("testDestination");
-		readSocket.nonblocking();
-		int rc = 0;
-		while (rc<gNumToSend) {
-			char buf[MAX_UDP_LENGTH];
-			int count = readSocket.read(buf);
-			if (count>0) {
-				COUT("UNIX read: " << buf);
-				rc++;
-			} else {
-				COUT("UNIX sleeping...");
-				sleep(2);
-			}
+	UDDSocket readSocket("testDestination");
+	readSocket.nonblocking();
+	int rc = 0;
+	while (rc<gNumToSend) {
+		char buf[MAX_UDP_LENGTH];
+		int count = readSocket.read(buf);
+		if (count>0) {
+			COUT("read: " << buf);
+			rc++;
+		} else {
+			sleep(2);
 		}
 	}
-};
+	return NULL;
+}
 
 
 int main(int argc, char * argv[] )
 {
 
-  TestReaderIP readerThreadIP;
-  TestReaderUnix readerThreadUnix;
-  readerThreadIP.startThread();
-  readerThreadUnix.startThread();
+  Thread readerThreadIP;
+  readerThreadIP.start(testReaderIP,NULL);
+  Thread readerThreadUnix;
+  readerThreadUnix.start(testReaderUnix,NULL);
 
   UDPSocket socket1(5061, "127.0.0.1",5934);
   UDDSocket socket1U("testSource","testDestination");
@@ -107,10 +92,12 @@ int main(int argc, char * argv[] )
 
   for (int i=0; i<gNumToSend; i++) {
     socket1.write("Hello IP land");	
-    socket1U.write("Hello Unix domain");
-    msleep(1);
+	socket1U.write("Hello Unix domain");
+	sleep(1);
   }
 
+  readerThreadIP.join();
+  readerThreadUnix.join();
 }
 
 // vim: ts=4 sw=4

CommonLibs/Threads.cpp

@@ -1,6 +1,5 @@
 /*
 * Copyright 2008 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 *
 * This software is distributed under the terms of the GNU Affero Public License.
@@ -30,26 +29,11 @@
 
 #include "Threads.h"
 #include "Timeval.h"
-#include "Logger.h"
-#include <pthread.h>
-#include <sys/types.h>
-#include <errno.h> // for ETIMEDOUT
-#include <sys/syscall.h> // for SYS_gettid
-#include <sys/prctl.h> // Linux specific, for prctl(PR_SET_NAME)
-
-// Make sure we get MCL_CURRENT and MCL_FUTURE (for mlockall) on OS X 10.3
-#define _P1003_1B_VISIBLE
-#include <sys/mman.h>
-#undef _P1003_1B_VISIBLE
 
 
 using namespace std;
 
-#define POSIX_OK           0
-#define POSIX_NO_WAIT      0
-#define POSIX_WAIT_FOREVER (-1)
 
-static inline int gettid() {return syscall(SYS_gettid);}
 
 
 Mutex gStreamLock;		///< Global lock to control access to cout and cerr.
@@ -111,235 +95,27 @@ Mutex::~Mutex()
 
 
 /** Block for the signal up to the cancellation timeout. */
-int Signal::wait(Mutex& wMutex, unsigned timeout) const
+void Signal::wait(Mutex& wMutex, unsigned timeout) const
 {
 	Timeval then(timeout);
 	struct timespec waitTime = then.timespec();
-	return pthread_cond_timedwait(&mSignal,&wMutex.mMutex,&waitTime);
+	pthread_cond_timedwait(&mSignal,&wMutex.mMutex,&waitTime);
 }
 
-Thread::Thread(const string &name, size_t stackSize)
-: mThreadId((pthread_t)0)
-, mThreadName(name)
-, mStackSize(stackSize)
-, mThreadState(THREAD_STATE_IDLE)
-, mThreadData(NULL)
+
+void Thread::start(void *(*task)(void*), void *arg)
 {
+	assert(mThread==((pthread_t)0));
+	bool res;
+	// (pat) Moved initialization to constructor to avoid crash in destructor.
+	//res = pthread_attr_init(&mAttrib);
+	//assert(!res);
+	res = pthread_attr_setstacksize(&mAttrib, mStackSize);
+	assert(!res);
+	res = pthread_create(&mThread, &mAttrib, task, arg);
+	assert(!res);
 }
 
-Thread::~Thread()
-{
-    stopThread();
-}
 
-void *Thread::threadAdaptor(void *data)
-{
-    Thread *pThread = (Thread*)data;
-
-    // If we ever receive a thread cancel request, it means that the Thread
-    // object is in the process of being destroyed.  To avoid the situation
-    // where a thread attempts to run after its containing Thread object has
-    // been freed, we set the thread up so that the cancel takes effect
-    // immediately (as opposed to waiting until the next thread cancellation
-    // point).
-    pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
-
-    // =====================================================================
-    // Synchronize with the start() in the parent thread.
-    {
-        // 1. Lock synchronization mutex.
-        ScopedLock lock(pThread->mThreadStartupMutex);
-
-        // 2. Btw, set the thread name, while we're inside the mutex.
-        // FIXME: This works on Linux with glibc >= 2.12. Under *BSD and MacOS X
-        //        this function has different arguments.
-//        pthread_setname_np(pThread->mThreadId, pThread->mThreadName.c_str());
-        // FIXME: For some reason the previous call doesn't work on my Ubuntu 12.04,
-        //        so we use this one which works.
-        prctl(PR_SET_NAME, pThread->mThreadName.c_str());
-
-        // 3. Signal that we've started.
-        pThread->mThreadStartStopEvent.signal();
-
-        // 4. Wait until start() finishes its initialization.
-        //
-        // The actual thread is created and started with pthread_create(), then
-        // start() does its housekeeping and sets mThreadState=THREAD_STATE_RUNNING.
-        // If we allow Thread::run() to start before this initialization completes,
-        // callers might think (among other things) that the thread is not started
-        // while it's actually started.
-        pThread->mThreadInitializedEvent.wait(pThread->mThreadStartupMutex);
-    }
-    // Synchronization with the parent thread is finished.
-    // =====================================================================
-
-    // Log Thread ID for debugging purposes
-    LOG(INFO) << "Thread started: " << pThread->mThreadName
-              << " with lwp=" << gettid() << ", pid=" << getpid();
-
-    // Keep all memory locked into physical mem, to guarantee realtime-behaviour
-    int res = mlockall(MCL_CURRENT|MCL_FUTURE);
-    if (res != POSIX_OK) {
-      LOG(WARNING) << "Failed to lock memory for thread: " << pThread->mThreadName;
-    }
-
-    // Run the actual code
-    pThread->runThread();
-
-    // Huh, we're done. Signal to a (potentially) waiting stop()'s.
-    {
-        ScopedLock lock(pThread->mThreadStateMutex);
-        pThread->mThreadState = THREAD_STATE_IDLE;
-        pThread->mThreadStartStopEvent.broadcast();
-    }
-
-    return NULL;
-}
-
-Thread::ReturnStatus Thread::startThread(void *data)
-{
-    pthread_attr_t attrib;
-//    timeval        threadStartTime;
-//    timespec       threadStartTimeout;
-    bool res;
-
-    // Lock startup synchronization mutex. It will be used in conjunction with
-    // mThreadInitializedEvent and mThreadStartStopEvent conditional variables.
-    ScopedLock lock(mThreadStartupMutex);
-
-    {
-        ScopedLock lock(mThreadStateMutex);
-        if (mThreadState != THREAD_STATE_IDLE)
-            return ALREADY_STARTED;
-        mThreadState = THREAD_STATE_STARTING;
-    }
-
-    // Save thread data pointer
-    mThreadData = data;
-
-    LOG(DEBUG) <<  "Starting thread " << mThreadName << " (" << this << ")";
-
-    // construct thread attribute
-    res = pthread_attr_init(&attrib);
-    if (res != POSIX_OK) {
-        LOG(ALERT) <<  "pthread_attr_init failed, returned " << res
-                   << " in " << mThreadName << " (" << this << ")";
-    }
-
-
-    // Set the thread stack size
-    res = pthread_attr_setstacksize(&attrib, mStackSize);
-    if (res != POSIX_OK)
-    {
-        LOG(ALERT) <<  "pthread_attr_setstacksize failed, returned " << res
-                   << " in " << mThreadName << " (" << this << ")";
-    }
-
-    // Create the thread detached
-    res = pthread_attr_setdetachstate(&attrib, PTHREAD_CREATE_DETACHED);
-    if (res != POSIX_OK)
-    {
-       LOG(ALERT) <<  "pthread_attr_setdetachstate failed, returned " << res
-                  << " in " << mThreadName << " (" << this << ")";
-    }
-
-    // =====================================================================
-    // Start the thread and synchronize with it
-
-    // Start the thread!
-    res = pthread_create(&mThreadId, &attrib, threadAdaptor, (void *)this);
-    // Attributes are no longer needed.
-    pthread_attr_destroy(&attrib);
-
-    if (res != POSIX_OK)
-    {
-        LOG(ALERT) << "pthread_create failed, returned " << res
-                   << " in " << mThreadName << " (" << this << ")";
-
-        return PTHREAD_ERROR;
-    }
-
-    // Wait for the thread to startup.
-    res = mThreadStartStopEvent.wait(mThreadStartupMutex, THREAD_STARTUP_TIMEOUT*1000);
-
-    // If the thread does not start in THREAD_STARTUP_TIMEOUT seconds,
-    // then something is terribly wrong here.
-    if (res == ETIMEDOUT)
-    {
-       LOG(ALERT) << "thread " << mThreadName << " (" << this << ") hasn't started up in "
-                  << THREAD_STARTUP_TIMEOUT << " seconds. Bailing out.";
-
-       return RETURN_TIMEOUT;
-    }
-
-    // We're done with the initialization.
-    ackThreadStart();
-
-    // ToDo: Add other initialization here, e.g. adding this thread to a list of all threads.
-
-    // Startup initialization finished. Signal this to started thread, so
-    // it could go on.
-    mThreadInitializedEvent.signal();
-
-    return RETURN_OK;
-}
-
-Thread::ReturnStatus Thread::stopThread()
-{
-    int res;
-
-    LOG(DEBUG) <<  "Stopping thread " << mThreadName << " (" << this << ")";
-
-    while (1) {
-        ScopedLock lock(mThreadStateMutex);
-
-        switch (mThreadState) {
-        case THREAD_STATE_IDLE:
-            // Nothing to do.
-            return RETURN_OK;
-
-        case THREAD_STATE_STARTING:
-            // Something is wrong in thi world.
-            assert(mThreadState != THREAD_STATE_STARTING);
-            LOG(ALERT) << "Trying to stop thread " << mThreadName
-                       << " (" << this << ") while it's trying to start.";
-            return WRONG_STATE;
-
-        case THREAD_STATE_RUNNING:
-            // Request shudown
-            mThreadState = THREAD_STATE_STOPPING;
-            // no "break" here to fall through to the next case
-
-        case THREAD_STATE_STOPPING:
-            // Wait for the thread to stop.
-            LOG(DEBUG) << "Waiting for thread " << mThreadName << " (" << this << ") to stop.";
-            res = mThreadStartStopEvent.wait(mThreadStateMutex, THREAD_STOP_TIMEOUT*1000);
-            LOG(DEBUG) << "Thread " << mThreadName << " (" << this << ") signalled stop "
-                       << "with res=" << res << " and mThreadState=" << mThreadState;
-
-            // If the thread does not stop in THREAD_STOP_TIMEOUT seconds,
-            // return error. It may be waiting for something.
-            if (res == ETIMEDOUT)
-            {
-               LOG(ALERT) << "thread " << mThreadName << " (" << this << ") hasn't stopped in "
-                          << THREAD_STARTUP_TIMEOUT << " seconds. Bailing out.";
-
-               return RETURN_TIMEOUT;
-            }
-
-            // Conditional variable could return in case of a signal, so we should
-            // double check that the thread has indeed stopped.
-            if (mThreadState == THREAD_STATE_IDLE)
-                return RETURN_OK;
-            else
-                // Try again...
-                break;
-        }
-    }
-
-    // We should never reach this line
-    assert(false);
-    return RETURN_OK;
-}
 
 // vim: ts=4 sw=4

CommonLibs/Threads.h

@@ -1,6 +1,5 @@
 /*
 * Copyright 2008, 2011 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
 *
 * This software is distributed under the terms of the GNU Affero Public License.
 * See the COPYING file in the main directory for details.
@@ -122,14 +121,14 @@ class Signal {
 		Block for the signal up to the cancellation timeout.
 		Under Linux, spurious returns are possible.
 	*/
-	int wait(Mutex& wMutex, unsigned timeout) const;
+	void wait(Mutex& wMutex, unsigned timeout) const;
 
 	/**
 		Block for the signal.
 		Under Linux, spurious returns are possible.
 	*/
-	int wait(Mutex& wMutex) const
-		{ return pthread_cond_wait(&mSignal,&wMutex.mMutex); }
+	void wait(Mutex& wMutex) const
+		{ pthread_cond_wait(&mSignal,&wMutex.mMutex); }
 
 	void signal() { pthread_cond_signal(&mSignal); }
 
@@ -138,105 +137,54 @@ class Signal {
 };
 
 
+
+#define START_THREAD(thread,function,argument) \
+	thread.start((void *(*)(void*))function, (void*)argument);
+
 /** A C++ wrapper for pthread threads.  */
 class Thread {
 
-public:
+	private:
 
-    typedef void *(*Adaptor)(void*);
-    enum ReturnStatus {
-        RETURN_OK = 0,
-        ALREADY_STARTED,
-        ALREADY_IDLE,
-        PTHREAD_ERROR,
-        WRONG_STATE,
-        RETURN_TIMEOUT
-    };
-    enum ThreadState {
-        THREAD_STATE_IDLE,      ///< Thread is not started. On start() => STARTING
-        THREAD_STATE_STARTING,  ///< Thread is about to start. When actually started => RUNNING
-        THREAD_STATE_RUNNING,   ///< Thread is active. On stop() => STOPPING
-        THREAD_STATE_STOPPING   ///< Thread is about to stop. When actually stopped => IDLE
-    };
-    enum {
-       THREAD_STARTUP_TIMEOUT=5, ///< Time to wait for thread startup (in seconds).
-       THREAD_STOP_TIMEOUT=5     ///< Time to wait for thread stop (in seconds).
-    };
+	pthread_t mThread;
+	pthread_attr_t mAttrib;
+	// FIXME -- Can this be reduced now?
+	size_t mStackSize;
+	
 
-    /** Create a thread in a non-running state. */
-    Thread(const std::string &name, size_t stackSize = (65536*4));
+	public:
 
-    /** Destroy the Thread. */
-    virtual ~Thread();
+	/** Create a thread in a non-running state. */
+	Thread(size_t wStackSize = (65536*4)):mThread((pthread_t)0) {
+		pthread_attr_init(&mAttrib);	// (pat) moved this here.
+		mStackSize=wStackSize;
+	}
 
-    /** Start the thread. */
-    ReturnStatus startThread(void *data=NULL);
+	/**
+		Destroy the Thread.
+		It should be stopped and joined.
+	*/
+	// (pat) If the Thread is destroyed without being started, then mAttrib is undefined.  Oops.
+	~Thread() { pthread_attr_destroy(&mAttrib); }
 
-    /** Stop the thread. */
-    ReturnStatus stopThread();
 
-    ThreadState getThreadState() const
-    {
-        ScopedLock lock(mThreadStateMutex);
-        return mThreadState;
-    }
+	/** Start the thread on a task. */
+	void start(void *(*task)(void*), void *arg);
 
-    bool isThreadRunning() const
-    {
-        ScopedLock lock(mThreadStateMutex);
-        return mThreadState == THREAD_STATE_RUNNING;
-    }
-    void requestThreadStop()
-    {
-        ScopedLock lock(mThreadStateMutex);
-        if (mThreadState == THREAD_STATE_RUNNING)
-            mThreadState = THREAD_STATE_STOPPING;
-    }
-    bool isThreadStopping() const
-    {
-        ScopedLock lock(mThreadStateMutex);
-        return mThreadState == THREAD_STATE_STOPPING;
-    }
+	/** Join a thread that will stop on its own. */
+	void join() {
+		if (mThread) {
+			int s = pthread_join(mThread, NULL);
+			assert(!s);
+		}
+	}
 
-    const std::string &getThreadName() const {return mThreadName;}
-
-protected:
-
-    pthread_t mThreadId; ///< OS id of the thread.
-    const std::string mThreadName; ///< Name of the thread.
-    size_t mStackSize;  ///< Requested stack size for the thread.
-    ThreadState mThreadState; ///< The current state of the thread.
-    mutable Mutex mThreadStateMutex; ///< Mutex to protect ThreadState variable
-    void *mThreadData;  ///< Data to be passed to the thread loop.
-    Mutex mThreadStartupMutex; ///< Mutex, used with the next two conditional
-                        ///< variables to synchronize thread startup.
-    Signal  mThreadInitializedEvent; ///< Conditional variable, signaling
-                        ///< that this thread object initialization is completed
-                        ///< and the thread could go on.
-    Signal  mThreadStartStopEvent; ///< Conditional variable, signaling
-                        ///< that the thread is started and start() method could
-                        ///< return to caller.
-
-    /** Function with the actual thread loop.
-     *  Override this function in child classes to do real work.
-     */
-    virtual void runThread() =0;
-
-    // Static funciton which actually starts the run() method.
-    static void *threadAdaptor(void *data);
-
-    void ackThreadStart() {
-        ScopedLock lock(mThreadStateMutex);
-        assert(mThreadState == THREAD_STATE_STARTING);
-        mThreadState = THREAD_STATE_RUNNING;
-    }
-    void ackThreadStop() {
-        ScopedLock lock(mThreadStateMutex);
-        assert(mThreadState == THREAD_STATE_STOPPING);
-        mThreadState = THREAD_STATE_IDLE;
-    }
+	/** Send cancelation to thread */
+	void cancel() { pthread_cancel(mThread); }
 };
 
 
+
+
 #endif
 // vim: ts=4 sw=4

CommonLibs/ThreadsTest.cpp

@@ -1,94 +0,0 @@
-/*
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
-*
-*
-* This software is distributed under the terms of the GNU Affero Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-	This program is free software: you can redistribute it and/or modify
-	it under the terms of the GNU Affero General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
-	(at your option) any later version.
-
-	This program is distributed in the hope that it will be useful,
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-	GNU Affero General Public License for more details.
-
-	You should have received a copy of the GNU Affero General Public License
-	along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-
-
-#include "Threads.h"
-#include "Timeval.h"
-#include "Configuration.h"
-#include <iostream>
-
-ConfigurationTable gConfig;
-
-class SimpleThreadTest : public Thread
-{
-public:
-    SimpleThreadTest() : Thread("SimpleThreadTest") {}
-
-    void runThread()
-    {
-        COUT(getThreadName() << ": Started thread");
-        while (isThreadRunning()) {
-            COUT(getThreadName() << ": Sleeping...");
-            msleep(50);
-        }
-        COUT(getThreadName() << ": Stopped thread");
-    }
-
-};
-
-
-void testSimpleStartStop()
-{
-    SimpleThreadTest simpleThreadTest;
-    COUT("Main: Starting thread " << simpleThreadTest.getThreadName());
-    simpleThreadTest.startThread();
-    COUT("Main: Started  thread " << simpleThreadTest.getThreadName());
-    msleep(30);
-    COUT("Main: Stopping thread " << simpleThreadTest.getThreadName());
-    simpleThreadTest.stopThread();
-    COUT("Main: Stopped  thread " << simpleThreadTest.getThreadName());
-}
-
-void testDoubleRequestStop()
-{
-    SimpleThreadTest simpleThreadTest;
-    COUT("Main: Starting thread " << simpleThreadTest.getThreadName());
-    simpleThreadTest.startThread();
-    COUT("Main: Started  thread " << simpleThreadTest.getThreadName());
-    msleep(30);
-    COUT("Main: Requesting stop for thread " << simpleThreadTest.getThreadName());
-    simpleThreadTest.requestThreadStop();
-    msleep(30);
-    COUT("Main: Requesting stop for thread " << simpleThreadTest.getThreadName());
-    simpleThreadTest.requestThreadStop();
-    msleep(30);
-    COUT("Main: Stopping thread " << simpleThreadTest.getThreadName());
-    simpleThreadTest.stopThread();
-    COUT("Main: Stopped  thread " << simpleThreadTest.getThreadName());
-}
-
-
-int main(int argc, char *argv[])
-{
-    std::cout<< std::endl << "Simple start/stop test" << std::endl << std::endl ;
-    testSimpleStartStop();
-
-    std::cout << std::endl << "Double requestThreadStop() test" << std::endl << std::endl ;
-    testDoubleRequestStop();
-}
-
-
-// vim: ts=4 sw=4

GSM/GSMCommon.cpp

@@ -41,10 +41,24 @@ const BitVector GSM::gTrainingSequence[] = {
     BitVector("11101111000100101110111100"),
 };
 
+const BitVector GSM::gEdgeTrainingSequence[] = {
+    BitVector("111111001111111001111001001001111111111111001111111111001111111001111001001001"),
+    BitVector("111111001111001001111001001001111001001001001111111111001111001001111001001001"),
+    BitVector("111001111111111111001001001111001001001111001111111001111111111111001001001111"),
+    BitVector("111001111111111001001001001111001001111001111111111001111111111001001001001111"),
+    BitVector("111111111001001111001111001001001111111001111111111111111001001111001111001001"),
+    BitVector("111001111111001001001111001111001001111111111111111001111111001001001111001111"),
+    BitVector("001111001111111001001001001001111001001111111111001111001111111001001001001001"),
+    BitVector("001001001111001001001001111111111001111111001111001001001111001001001001111111"),
+};
+
 const BitVector GSM::gDummyBurst("0001111101101110110000010100100111000001001000100000001111100011100010111000101110001010111010010100011001100111001111010011111000100101111101010000");
 
 const BitVector GSM::gRACHSynchSequence("01001011011111111001100110101010001111000");
 
+//                               |-head-||---------midamble----------------------||--------------data----------------||t|
+const BitVector GSM::gRACHBurst("0011101001001011011111111001100110101010001111000110111101111110000111001001010110011000");
+
 
 int32_t GSM::FNDelta(int32_t v1, int32_t v2)
 {

GSM/GSMCommon.h

@@ -46,12 +46,15 @@ namespace GSM {
 
 /** GSM Training sequences from GSM 05.02 5.2.3. */
 extern const BitVector gTrainingSequence[];
+extern const BitVector gEdgeTrainingSequence[];
 
 /** C0T0 filler burst, GSM 05.02, 5.2.6 */
 extern const BitVector gDummyBurst;
 
 /** Random access burst synch. sequence */
 extern const BitVector gRACHSynchSequence;
+/** Random access burst synch. sequence, GSM 05.02 5.2.7 */
+extern const BitVector gRACHBurst;
 
 
 /**@name Modulus operations for frame numbers. */

Makefile.am

@@ -20,6 +20,7 @@
 
 include $(top_srcdir)/Makefile.common
 
+ACLOCAL_AMFLAGS = -I config
 AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES) $(USB_INCLUDES) $(WITH_INCLUDES)
 AM_CXXFLAGS = -Wall -pthread -ldl
 #AM_CXXFLAGS = -Wall -O2 -NDEBUG -pthread -ldl

Makefile.common

@@ -18,11 +18,15 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+top_srcdir = $(abs_top_srcdir)
+top_builddir = $(abs_top_builddir)
+
 COMMON_INCLUDEDIR = $(top_srcdir)/CommonLibs
 GSM_INCLUDEDIR = $(top_srcdir)/GSM
 SQLITE_INCLUDEDIR = $(top_srcdir)/sqlite3
 
 STD_DEFINES_AND_INCLUDES = \
+	$(SVNDEV) \
 	-I$(COMMON_INCLUDEDIR) \
 	-I$(GSM_INCLUDEDIR) \
 	-I$(SQLITE_INCLUDEDIR)

README

@@ -1,168 +1,116 @@
-Welcome to the OpenBTS source code.
+This is the interface to the transcevier.
 
-
-For free support, please subscribe to openbts-discuss@lists.sourceforge.net.
-See http://sourceforge.net/mailarchive/forum.php?forum_name=openbts-discuss
-and https://lists.sourceforge.net/lists/listinfo/openbts-discuss for details.
-
-For additional information, refer to http://openbts.org.
-
-
-These are the directories:
-
-AsteriskConfig	Asterisk configuration files for use with OpenBTS.
-CommonLib	Common-use libraries, mostly C++ wrappers for basic facilities.
-Control		Control-layer functions for the protocols of GSM 04.08 and SIP.
-GSM		The GSM stack.
-SIP		Components of the SIP state machines ued by the control layer.
-SMS		The SMS stack.
-SR		The subscriber registry.
-TRXManager	The interface between the GSM stack and the radio.
-Transceiver	The software transceiver and specific installation tests.
-apps		OpenBTS application binaries.
-doc		Project documentation.
-tests		Test fixtures for subsets of OpenBTS components.
-smqueue		RFC-3428 store-and-forward server for SMS
+Each TRX Manager UDP socket interface represents a single ARFCN.
+Each of these per-ARFCN interfaces is a pair of UDP sockets, one for control and one for data.
+Give a base port B (5700), the master clock interface is at port P=B.
+The TRX-side control interface for C(N) is on  port P=B+2N+1 and the data interface is on an odd numbered port P=B+2N+2.
+The corresponding core-side interface for every socket is at P+100.
+For any given build, the number of ARFCN interfaces can be fixed.
 
 
 
-By default, OpenBTS assumes the following UDP port assignments:
+Indications on the Master Clock Interface
 
-5060 -- Asterisk SIP interface
-5061 -- local SIP softphone
-5062 -- OpenBTS SIP interface
-5063 -- smqueue SIP interface
-5064 -- subscriber registry SIP interface
-5700-range -- OpenBTS-transceiver interface
+The master clock interface is output only (from the radio).
+Messages are "indications".
 
-These can be controlled in the CONFIG table in /etc/OpenBTS.db.
+CLOCK gives the current value of the transceiver clock to be used by the core.
+This message is sent whenever a trasmission packet arrives that is too late or too early.  The clock value is NOT the current transceiver time.  It is a time setting the the core should use to give better packet arrival times.
+IND CLOCK <totalFrames>
 
-Standrd paths:
-/OpenBTS -- Binary installation.
-/etc/OpenBTS -- Configuration databases.
-/var/run/OpenBTS -- Real-time reporting databases.
 
-The script apps/setUpFiles.sh will create these directories and install the
-correct files in them.
+
+Commands on the Per-ARFCN Control Interface
+
+The per-ARFCN control interface uses a command-reponse protocol.
+Commands are NULL-terminated ASCII strings, one per UDP socket.
+Each command has a corresponding response.
+Every command is of the form:
+
+CMD <cmdtype> [params]
+
+The <cmdtype> is the actual command.
+Parameters are optional depending on the commands type.
+Every response is of the form:
+
+RSP <cmdtype> <status> [result]
+
+The <status> is 0 for success and a non-zero error code for failure.
+Successful responses may include results, depending on the command type.
+
+
+Power Control
+
+POWEROFF shuts off transmitter power and stops the demodulator.
+CMD POWEROFF
+RSP POWEROFF <status>
+
+POWERON starts the transmitter and starts the demodulator.  Initial power level is very low.
+This command fails if the transmitter and receiver are not yet tuned.
+This command fails if the transmit or receive frequency creates a conflict with another ARFCN that is already runnng.
+If the transceiver is already on, it response with success to this command.
+CMD POWERON
+RSP POWERON <status>
+
+SETPOWER sets output power in dB wrt full scale.
+This command fails if the transmitter and receiver are not running.
+CMD SETPOWER <dB>
+RSP SETPOWER <status> <dB>
+
+ADJPOWER adjusts power by the given dB step.  Response returns resulting power level wrt full scale.
+This command fails if the transmitter and receiver are not running.
+CMD ADJPOWER <dBStep>
+RSP ADJPOWER <status> <dBLevel>
+
+
+Tuning Control
+
+RXTUNE tunes the receiver to a given frequency in kHz.
+This command fails if the receiver is already running.
+(To re-tune you stop the radio, re-tune, and restart.)
+This command fails if the transmit or receive frequency creates a conflict with another ARFCN that is already runnng.
+CMD RXTUNE <kHz>
+RSP RXTUNE <status> <kHz>
+
+TXTUNE tunes the transmitter to a given frequency in kHz.
+This command fails if the transmitter is already running.
+(To re-tune you stop the radio, re-tune, and restart.)
+This command fails if the transmit or receive frequency creates a conflict with another ARFCN that is already runnng.
+CMD TXTUNE <kHz>
+RSP TXTUNE <status> <kHz>
+
+
+Timeslot Control
+
+SETSLOT sets the format of the uplink timeslots in the ARFCN.
+The <timeslot> indicates the timeslot of interest.
+The <chantype> indicates the type of channel that occupies the timeslot.
+A chantype of zero indicates the timeslot is off.
+CMD SETSLOT <timeslot> <chantype>
+RSP SETSLOT <status> <timeslot> <chantype>
+
+
+Messages on the per-ARFCN Data Interface
+
+Messages on the data interface carry one radio burst per UDP message.
+
+
+Received Data Burst
+
+1 byte timeslot index
+4 bytes GSM frame number, big endian
+1 byte RSSI in -dBm
+2 bytes correlator timing offset in 1/256 symbol steps, 2's-comp, big endian
+148 bytes soft symbol estimates, 0 -> definite "0", 255 -> definite "1"
+
+
+Transmit Data Burst
+
+1 byte timeslot index
+4 bytes GSM frame number, big endian
+1 byte transmit level wrt ARFCN max, -dB (attenuation)
+148 bytes output symbol values, 0 & 1
 
 
 
 
-Release history:
-
-Release	Name		SVN Reposiory	SVN Rev	Comments
-
-1.0	(none)		SF.net		??		completed L1, L2
-
-1.1	Arnaudville	GNU Radio	r10019 (trunk)
-
-1.2	Breaux Bridge	GNU Radio	r10088 (trunk)	GNU Build, very early assignment
-
-1.3	Carencro	KSP		r1 (trunk)	first post-injunction release
-
-1.4	Donaldsonville	KSP		r23 (trunk)	fixed Ubuntu build error
-
-1.5	Eunice		KSP		r39 (trunk)	fixed L2 bugs related to segmentation
-							removed incomplete SMS directory
-							moved "abort" calls into L3 subclasses
-
-1.6	New Iberia	KSP		r130 (trunk)	import of all 2.2 improvements to non-SMS release
-
-
-2.0	St. Francisville KSP		r54 (smswork)	SMS support
-							file-based configuration
-
-2.1	Grand Coteau	KSP		r70 (smswork)	DTMF support
-							fixed more Linux-related build errors
-								-lpthread
-								TLMessage constructor
-							expanded stack to prevent overflows in Linux
-							moved gSIPInterface to main app
-							fixed iterator bug in Pager
-
-2.2	Houma		KSP		r122 (smswork)	added LEGAL notice
-							removed Assert classes
-							stop paging on page response
-							fixed Pager-spin bug
-							fixed Transceiver spin bugs
-							fixed 2^32 microsecond rollover bug
-							reduced stack footprints in Transceiver
-							fixed SMS timestamps
-							check LAI before using TMSI in LUR
-							reduced memory requirement by 75%
-							removed PagerTest
-							fixed stale-transaction bug in paging handler
-							fixed USRP clock rollover bug
-							faster call connection
-							new USRPDevice design
-
-2.3	Jean Lafitte	KSP		r190? (trunk)	check for out-of-date RACH bursts
-							better TRX-GSM clock sync
-							formal logging system
-							command line interface
-							emergency call setup
-
-2.4	Kinder		KSP		r208? (trunk)	fixed BCCH neighbor list bug
-							support for neighbor lists
-							fixed support for non-local Asterisk servers
-							cleaner configuration management
-							more realtime control of BCCH parameters
-							proper rejection of Hold messages
-							fixed L3 hanging bug in MTDCheckBYE
-
-2.4.1	Kinder		KSP		r462		fixed lots of valgrind errors
-
-2.4.2	Kinder		KSP		r482		zero-length calling party number bug
-							g++ 4.4 #includes
-
-2.5	Lacassine	KSP		r551		imported Joshua Lackey patches
-							SIP fixes from Anne Kwong
-							SIP fixes from testing with SMS server
-							L3 TI handling fixes
-							SMS server support
-							GNU Radio 3.2 compatibility
-							configurable max range and LU-reject cause
-							"page" & "testcall" CLI features
-
-2.5.1	Lacassine	KSP		r595		fixed some build bugs for some Linux distros
-
-2.5.2	Lacassine	KSP		r630		fixed channel assignment bug for Nokia DCT4+ handsets
-
-2.5.3	Lacassine	KSP		r756		merged fix for transceiver startup crash
-								due to use of uninitialized variables (r646)
-							merged fix for fusb bug from trunk (r582)
-
-2.5.4	Lacassine	KSP		r812		merged fixes to build under latest Fedora and
-								to build with git GnuRadio (r814)
-
-2.6	Mamou		KSP		r886		fixed infamous fusb bug (r582)
-							fixed idle-filling table size bug
-							smoother uplink power control
-							load-limiting downlink power control
-							new "config" features (optional, static)
-							IMEI interrogation
-							fixed MOD "missing FIFO" bug
-							configurable short code features
-							fixed transceiver startup crash (r646)
-							readline support is back
-							fixed timing advance bug (r844)
-							added CLI "chans" command
-							track time-of-use in TMSI table (r844)
-							added CLI "noise" command (r844)
-							added CLI "rxpower" command (r844)
-							added CLI "unconfig" command
-
-2.7	Natchitoches	Range	rxxx			(never released publicly)
-							converted TMSITable to sqlite3 (r902)
-							sqlite3-based configuration (r???)
-							converted Logger to syslogd (r903)
-							added support for rest octets (r1022)
-							external database for transaction reporting (r1184)
-							external database for channel status reporting (r1203)
-							in-call delivery and submission of text messages (r1231)
-							RFC-2833 DMTF (r1249)
-
-2.8	Opelousas	Range	rxxx			move databases to /etc and /var
-							RRLP aiding support
-
-

Transceiver52M/DriveLoop.cpp

@@ -1,268 +0,0 @@
-/*
-* Copyright 2008, 2009, 2010, 2012 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
-*
-* This software is distributed under the terms of the GNU Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <stdio.h>
-#include "DriveLoop.h"
-#include <Logger.h>
-
-using namespace GSM;
-
-DriveLoop::DriveLoop(int wBasePort, const char *TRXAddress,
-                     RadioInterface *wRadioInterface,
-		     int wChanM, int wC0, int wSamplesPerSymbol,
-                     GSM::Time wTransmitLatency)
-: Thread("DriveLoop")
-, mClockSocket(wBasePort, TRXAddress, wBasePort + 100)
-, mC0(wC0)
-{
-  mChanM = wChanM;
-  mSamplesPerSymbol = wSamplesPerSymbol;
-  mRadioInterface = wRadioInterface;
-
-  mStartTime = (random() % gHyperframe, 0);
-
-  mTransmitDeadlineClock = mStartTime;
-  mLatencyUpdateTime = mStartTime;
-  mTransmitLatency = wTransmitLatency;
-  mLastClockUpdateTime = mStartTime;
-
-  mRadioInterface->getClock()->set(mStartTime);
-
-  // generate pulse and setup up signal processing library
-  gsmPulse = generateGSMPulse(2, mSamplesPerSymbol);
-  LOG(DEBUG) << "gsmPulse: " << *gsmPulse;
-  sigProcLibSetup(mSamplesPerSymbol);
-
-  txFullScale = mRadioInterface->fullScaleInputValue();
-
-  // initialize filler tables with dummy bursts on C0, empty bursts otherwise
-  for (int i = 0; i < 8; i++) {
-    signalVector* modBurst = modulateBurst(gDummyBurst, *gsmPulse,
-                                           8 + (i % 4 == 0), mSamplesPerSymbol);
-    scaleVector(*modBurst, txFullScale);
-    for (int j = 0; j < 102; j++) {
-      for (int n = 0; n < mChanM; n++) {
-        if (n == mC0)
-          fillerTable[n][j][i] = new signalVector(*modBurst);
-        else
-          fillerTable[n][j][i] = new signalVector(modBurst->size());
-      }
-    }
-    delete modBurst;
-
-    for (int n = 0; n < mChanM; n++) {
-      fillerModulus[n][i] = 26;
-      mChanType[n][i] = NONE;
-    }
-  }
-}
-
-DriveLoop::~DriveLoop()
-{
-  stopThread();
-  delete gsmPulse;
-  sigProcLibDestroy();
-}
-
-void DriveLoop::pushRadioVector(GSM::Time &nowTime)
-{
-  int i;
-  radioVector *staleBurst;
-  radioVector *next;
-
-  for (i = 0; i < mChanM; i++) {
-    // dump stale bursts, if any
-    while (staleBurst = mTransmitPriorityQueue[i].getStaleBurst(nowTime)) {
-      // Even if the burst is stale, put it in the fillter table.
-      // (It might be an idle pattern.)
-      LOG(NOTICE) << "dumping STALE burst in TRX->USRP interface";
-    }
-
-    int TN = nowTime.TN();
-    int modFN = nowTime.FN() % fillerModulus[i][nowTime.TN()];
-
-    mTxBursts[i] = fillerTable[i][modFN][TN];
-    mIsFiller[i] = true;
-    mIsZero[i] = (mChanType[i][TN] == NONE);
-
-    // if queue contains data at the desired timestamp, stick it into FIFO
-    if (next = (radioVector*) mTransmitPriorityQueue[i].getCurrentBurst(nowTime)) {
-      LOG(DEBUG) << "transmitFIFO: wrote burst " << next << " at time: " << nowTime;
-      mTxBursts[i] = next;
-      mIsFiller[i] = false;
-      mIsZero[i] = false;
-    }
-  }
-
-  mRadioInterface->driveTransmitRadio(mTxBursts, mIsZero);
-
-  for (i = 0; i < mChanM; i++) {
-    if (!mIsFiller[i])
-      delete mTxBursts[i];
-  }
-}
-
-void DriveLoop::setModulus(int channel, int timeslot)
-{
-  switch (mChanType[channel][timeslot]) {
-  case NONE:
-  case I:
-  case II:
-  case III:
-  case FILL:
-    fillerModulus[channel][timeslot] = 26;
-    break;
-  case IV:
-  case VI:
-  case V:
-    fillerModulus[channel][timeslot] = 51;
-    break;
-    //case V: 
-  case VII:
-    fillerModulus[channel][timeslot] = 102;
-    break;
-  default:
-    break;
-  }
-}
-
-DriveLoop::CorrType DriveLoop::expectedCorrType(int channel, GSM::Time currTime)
-{
-  unsigned burstTN = currTime.TN();
-  unsigned burstFN = currTime.FN();
-
-  switch (mChanType[channel][burstTN]) {
-  case NONE:
-    return OFF;
-    break;
-  case FILL:
-    return IDLE;
-    break;
-  case I:
-    return TSC;
-    /*if (burstFN % 26 == 25) 
-      return IDLE;
-    else
-      return TSC;*/
-    break;
-  case II:
-    if (burstFN % 2 == 1)
-      return IDLE;
-    else
-      return TSC;
-    break;
-  case III:
-    return TSC;
-    break;
-  case IV:
-  case VI:
-    return RACH;
-    break;
-  case V: {
-    int mod51 = burstFN % 51;
-    if ((mod51 <= 36) && (mod51 >= 14))
-      return RACH;
-    else if ((mod51 == 4) || (mod51 == 5))
-      return RACH;
-    else if ((mod51 == 45) || (mod51 == 46))
-      return RACH;
-    else
-      return TSC;
-    break;
-  }
-  case VII:
-    if ((burstFN % 51 <= 14) && (burstFN % 51 >= 12))
-      return IDLE;
-    else
-      return TSC;
-    break;
-  case LOOPBACK:
-    if ((burstFN % 51 <= 50) && (burstFN % 51 >=48))
-      return IDLE;
-    else
-      return TSC;
-    break;
-  default:
-    return OFF;
-    break;
-  }
-}
- 
-void DriveLoop::driveReceiveFIFO() 
-{
-  SoftVector *rxBurst = NULL;
-  int RSSI;
-  int TOA;  // in 1/256 of a symbol
-  GSM::Time burstTime;
-
-  mRadioInterface->driveReceiveRadio();
-}
-
-/*
- *  Features a carefully controlled latency mechanism, to
- *  assure that transmit packets arrive at the radio/USRP
- *  before they need to be transmitted.
- *  
- *  Deadline clock indicates the burst that needs to be
- *  pushed into the FIFO right NOW.  If transmit queue does
- *  not have a burst, stick in filler data.
- */
-void DriveLoop::driveTransmitFIFO() 
-{
-  int i;
-
-  RadioClock *radioClock = (mRadioInterface->getClock());
-  while (radioClock->get() + mTransmitLatency > mTransmitDeadlineClock) {
-    pushRadioVector(mTransmitDeadlineClock);
-    mTransmitDeadlineClock.incTN();
-  }
-
-  // FIXME -- This should not be a hard spin.
-  // But any delay here causes us to throw omni_thread_fatal.
-  //else radioClock->wait();
-}
-
-void DriveLoop::writeClockInterface()
-{
-  char command[50];
-  // FIXME -- This should be adaptive.
-  sprintf(command,"IND CLOCK %llu",
-          (unsigned long long) (mTransmitDeadlineClock.FN() + 2));
-
-  LOG(INFO) << "ClockInterface: sending " << command;
-
-  mClockSocket.write(command,strlen(command)+1);
-
-  mLastClockUpdateTime = mTransmitDeadlineClock;
-}
-
-void DriveLoop::runThread()
-{
-  setPriority();
-
-  while (isThreadRunning()) {
-    driveReceiveFIFO();
-    driveTransmitFIFO();
-  }
-}

Transceiver52M/DriveLoop.h

@@ -1,188 +0,0 @@
-/*
-* Copyright 2008, 2012 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
-*
-* This software is distributed under the terms of the GNU Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-
-
-/*
-	Compilation switches
-	TRANSMIT_LOGGING	write every burst on the given slot to a log
-*/
-
-#ifndef _DRIVELOOP_H_
-#define _DRIVELOOP_H_
-
-#include "radioInterface.h"
-#include "Interthread.h"
-#include "GSMCommon.h"
-#include "Sockets.h"
-
-#include <sys/types.h>
-#include <sys/socket.h>
-
-/** Define this to be the slot number to be logged. */
-//#define TRANSMIT_LOGGING 1
-
-/** The Transceiver class, responsible for physical layer of basestation */
-class DriveLoop : public Thread {
-  
-private:
-
-  GSM::Time mTransmitLatency;     ///< latency between basestation clock and transmit deadline clock
-  GSM::Time mLatencyUpdateTime;   ///< last time latency was updated
-  GSM::Time mLastClockUpdateTime; ///< last time clock update was sent up to core
-
-  UDPSocket mClockSocket;	  ///< socket for writing clock updates to GSM core
-
-  VectorQueue  mTransmitPriorityQueue[CHAN_MAX];   ///< priority queue of transmit bursts received from GSM core
-
-  GSM::Time mTransmitDeadlineClock;       ///< deadline for pushing bursts into transmit FIFO 
-  GSM::Time mStartTime;                   ///< random start time of the radio clock
-
-  RadioInterface *mRadioInterface;	  ///< associated radioInterface object
-  double txFullScale;                     ///< full scale input to radio
-  double rxFullScale;                     ///< full scale output to radio
-
-  /** Number of channels supported by the channelizer */
-  int mChanM;
-
-  /** unmodulate a modulated burst */
-#ifdef TRANSMIT_LOGGING
-  void unModulateVector(signalVector wVector); 
-#endif
-
-  /** Push modulated burst into transmit FIFO corresponding to a particular timestamp */
-  void pushRadioVector(GSM::Time &nowTime);
-
-  /** Pull and demodulate a burst from the receive FIFO */ 
-  SoftVector *pullRadioVector(GSM::Time &wTime, int &RSSI, int &timingOffset);
-   
-  signalVector *gsmPulse;              ///< the GSM shaping pulse for modulation
-
-  int mSamplesPerSymbol;               ///< number of samples per GSM symbol
-
-  int fillerModulus[CHAN_MAX][8];                ///< modulus values of all timeslots, in frames
-  signalVector *fillerTable[CHAN_MAX][102][8];   ///< table of modulated filler waveforms for all timeslots
-
-  /** Channelizer path for primary ARFCN */
-  int mC0;
-
-  signalVector *mTxBursts[CHAN_MAX];
-  bool         mIsFiller[CHAN_MAX];
-  bool         mIsZero[CHAN_MAX];
-
-public:
-
-  /** Transceiver constructor 
-      @param wBasePort base port number of UDP sockets
-      @param TRXAddress IP address of the TRX manager, as a string
-      @param wSamplesPerSymbol number of samples per GSM symbol
-      @param wTransmitLatency initial setting of transmit latency
-      @param radioInterface associated radioInterface object
-  */
-  DriveLoop(int wBasePort, const char *TRXAddress,
-	    RadioInterface *wRadioInterface,
-	    int wChanM = 1, int wC0 = 0,
-            int wSamplesPerSymbol = SAMPSPERSYM,
-	    GSM::Time wTransmitLatency = GSM::Time(3, 0));
-   
-  /** Destructor */
-  ~DriveLoop();
-
-  VectorQueue *priorityQueue(int m) { return &mTransmitPriorityQueue[m]; }
-
-  /** Codes for burst types of received bursts*/
-  typedef enum {
-    OFF,               ///< timeslot is off
-    TSC,	       ///< timeslot should contain a normal burst
-    RACH,	       ///< timeslot should contain an access burst
-    IDLE	       ///< timeslot is an idle (or dummy) burst
-  } CorrType;
-
-  /** Codes for channel combinations */
-  typedef enum {
-    FILL,               ///< Channel is transmitted, but unused
-    I,                  ///< TCH/FS
-    II,                 ///< TCH/HS, idle every other slot
-    III,                ///< TCH/HS
-    IV,                 ///< FCCH+SCH+CCCH+BCCH, uplink RACH
-    V,                  ///< FCCH+SCH+CCCH+BCCH+SDCCH/4+SACCH/4, uplink RACH+SDCCH/4
-    VI,                 ///< CCCH+BCCH, uplink RACH
-    VII,                ///< SDCCH/8 + SACCH/8
-    NONE,               ///< Channel is inactive, default
-    LOOPBACK            ///< similar go VII, used in loopback testing
-  } ChannelCombination;
-
-  /** Set modulus for specific timeslot */
-  void setModulus(int channel, int timeslot);
-
-  /** return the expected burst type for the specified timestamp */
-  CorrType expectedCorrType(int channel, GSM::Time currTime);
-
-  void setTimeslot(int m, int timeslot, ChannelCombination comb)
-  {
-    mChanType[m][timeslot] = comb;
-  }
-
-  GSM::Time getStartTime() { return mStartTime; }
-  GSM::Time getLastClockUpdate() { return mLastClockUpdateTime; }
-  GSM::Time getDeadlineClock() { return mTransmitDeadlineClock; }
-
-  /** send messages over the clock socket */
-  void writeClockInterface(void);
-
-private:
-
-  ChannelCombination mChanType[CHAN_MAX][8];     ///< channel types for all timeslots
-
-protected:
-
-  /** drive reception and demodulation of GSM bursts */ 
-  void driveReceiveFIFO();
-
-  /** drive transmission of GSM bursts */
-  void driveTransmitFIFO();
-
-  /** drive handling of control messages from GSM core */
-  void driveControl();
-
-  /**
-    drive modulation and sorting of GSM bursts from GSM core
-    @return true if a burst was transferred successfully
-  */
-  bool driveTransmitPriorityQueue();
-
-  virtual void runThread();
-
-  void reset();
-
-  /** set priority on current thread */
-  void setPriority() { mRadioInterface->setPriority(); }
-
-};
-
-/** FIFO thread loop */
-void *RadioDriveLoopAdapter(DriveLoop *);
-
-#endif /* _DRIVELOOP_H_ */

Transceiver52M/DummyLoad.cpp

@@ -1,146 +0,0 @@
-/*
-* Copyright 2008, 2009 Free Software Foundation, Inc.
-*
-* This software is distributed under the terms of the GNU Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-
-/*
-	Compilation Flags
-
-	SWLOOPBACK	compile for software loopback testing
-*/ 
-
-
-#include <stdint.h>
-#include <string.h>
-#include <stdlib.h>
-#include "Threads.h"
-#include "DummyLoad.h"
-
-#include <Logger.h>
-
-
-using namespace std;
-
-
-
-int DummyLoad::loadBurst(short *wDummyBurst, int len) {
-  dummyBurst = wDummyBurst;
-  dummyBurstSz = len;
-}
-
-
-DummyLoad::DummyLoad (double _desiredSampleRate) 
-{
-  LOG(INFO) << "creating USRP device...";
-  sampleRate = _desiredSampleRate;
-}
-
-void DummyLoad::updateTime(void) {
-    gettimeofday(&currTime,NULL);
-    double timeElapsed = (currTime.tv_sec - startTime.tv_sec)*1.0e6 + 
-      (currTime.tv_usec - startTime.tv_usec);
-    currstamp = (TIMESTAMP) floor(timeElapsed/(1.0e6/sampleRate));
-}
-
-bool DummyLoad::make(bool wSkipRx) 
-{
-
-  samplesRead = 0;
-  samplesWritten = 0;
-  return true;
-}
-
-bool DummyLoad::start() 
-{
-  LOG(INFO) << "starting USRP...";
-  underrun = false;
-  gettimeofday(&startTime,NULL);
-  dummyBurstCursor = 0;
-  return true;
-}
-
-bool DummyLoad::stop() 
-{
-  return true;
-}
-
-
-// NOTE: Assumes sequential reads
-int DummyLoad::readSamples(short *buf, int len, bool *overrun, 
-			    TIMESTAMP timestamp,
-			    bool *wUnderrun,
-			    unsigned *RSSI) 
-{
-  updateTime();
-  underrunLock.lock();
-  *wUnderrun = underrun;
-  underrunLock.unlock();
-  if (currstamp+len < timestamp) {
-	usleep(100); 
-	return 0;
-  } 
-  else if (currstamp < timestamp) {
-	usleep(100);
-	return 0;
-  }
-  else if (timestamp+len < currstamp) {
-	memcpy(buf,dummyBurst+dummyBurstCursor*2,sizeof(short)*2*(dummyBurstSz-dummyBurstCursor));
-	int retVal = dummyBurstSz-dummyBurstCursor;
-	dummyBurstCursor = 0;
-	return retVal;
-  }
-  else if (timestamp + len > currstamp) {
-	int amount = timestamp + len - currstamp;
-	if (amount < dummyBurstSz-dummyBurstCursor) {
-	        memcpy(buf,dummyBurst+dummyBurstCursor*2,sizeof(short)*2*amount);
-        	dummyBurstCursor += amount;
-        	return amount;
-	}
-	else {
-        	memcpy(buf,dummyBurst+dummyBurstCursor*2,sizeof(short)*2*(dummyBurstSz-dummyBurstCursor));
-        	int retVal = dummyBurstSz-dummyBurstCursor;
-        	dummyBurstCursor = 0;
-        	return retVal;
-        }
-  }
-  return 0;
-}
-
-int DummyLoad::writeSamples(short *buf, int len, bool *wUnderrun, 
-			     unsigned long long timestamp,
-			     bool isControl) 
-{
-  updateTime();
-  underrunLock.lock();
-  underrun |= (currstamp+len < timestamp); 
-  underrunLock.unlock();
-  return len;
-}
-
-bool DummyLoad::updateAlignment(TIMESTAMP timestamp) 
-{
-  return true;
-}
-
-bool DummyLoad::setTxFreq(double wFreq) { return true;};
-bool DummyLoad::setRxFreq(double wFreq) { return true;};

Transceiver52M/DummyLoad.h

@@ -1,132 +0,0 @@
-/*
-* Copyright 2008 Free Software Foundation, Inc.
-*
-* This software is distributed under the terms of the GNU Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "radioDevice.h"
-
-
-#include <sys/time.h>
-#include <math.h>
-#include <string>
-#include <iostream>
-
-
-/** A class to handle a USRP rev 4, with a two RFX900 daughterboards */
-class DummyLoad: public RadioDevice {
-
-private:
-
-  double sampleRate; 	///< the desired sampling rate
-  unsigned long long samplesRead;	///< number of samples read from USRP
-  unsigned long long samplesWritten;	///< number of samples sent to USRP
-
-  Mutex underrunLock;
-
-  struct timeval startTime, currTime; 
-
-  TIMESTAMP currstamp;
-  short *dummyBurst;
-  int dummyBurstSz;
-  int dummyBurstCursor;
-  bool underrun;
-
-  void updateTime(void);
-
- public:
-
-  /** Object constructor */
-  DummyLoad (double _desiredSampleRate);
-
-  int loadBurst(short *wDummyBurst, int len);
-
-  /** Instantiate the USRP */
-  bool make(bool skipRx = false); 
-
-  /** Start the USRP */
-  bool start();
-
-  /** Stop the USRP */
-  bool stop();
-
-  /**
-	Read samples from the USRP.
-	@param buf preallocated buf to contain read result
-	@param len number of samples desired
-	@param overrun Set if read buffer has been overrun, e.g. data not being read fast enough
-	@param timestamp The timestamp of the first samples to be read
-	@param underrun Set if USRP does not have data to transmit, e.g. data not being sent fast enough
-	@param RSSI The received signal strength of the read result
-	@return The number of samples actually read
-  */
-  int  readSamples(short *buf, int len, bool *overrun, 
-		   TIMESTAMP timestamp = 0xffffffff,
-		   bool *underrun = NULL,
-		   unsigned *RSSI = NULL);
-  /**
-        Write samples to the USRP.
-        @param buf Contains the data to be written.
-        @param len number of samples to write.
-        @param underrun Set if USRP does not have data to transmit, e.g. data not being sent fast enough
-        @param timestamp The timestamp of the first sample of the data buffer.
-        @param isControl Set if data is a control packet, e.g. a ping command
-        @return The number of samples actually written
-  */
-  int  writeSamples(short *buf, int len, bool *underrun, 
-		    TIMESTAMP timestamp = 0xffffffff,
-		    bool isControl = false);
- 
-  /** Update the alignment between the read and write timestamps */
-  bool updateAlignment(TIMESTAMP timestamp);
-  
-  /** Set the transmitter frequency */
-  bool setTxFreq(double wFreq);
-
-  /** Set the receiver frequency */
-  bool setRxFreq(double wFreq);
-
-  /** Returns the starting write Timestamp*/
-  TIMESTAMP initialWriteTimestamp(void) { return 20000;}
-
-  /** Returns the starting read Timestamp*/
-  TIMESTAMP initialReadTimestamp(void) { return 20000;}
-
-  /** returns the full-scale transmit amplitude **/
-  double fullScaleInputValue() {return 13500.0;}
-
-  /** returns the full-scale receive amplitude **/
-  double fullScaleOutputValue() {return 9450.0;}
-
-  /** Return internal status values */
-  inline double getTxFreq() { return 0;}
-  inline double getRxFreq() { return 0;}
-  inline double getSampleRate() {return sampleRate;}
-  inline double numberRead() { return samplesRead; }
-  inline double numberWritten() { return samplesWritten;}
-
-};
-

Transceiver52M/Makefile.am

@@ -21,20 +21,23 @@
 
 include $(top_srcdir)/Makefile.common
 
-#UHD wins if both are defined
-if UHD
-AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES) $(UHD_CFLAGS)
-else
-if USRP1
-AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES) $(USRP_CFLAGS)
-else
-#we should never be here, as this doesn't build if one of the above
-#doesn't exist
-AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES)
-endif
-endif
+AM_CPPFLAGS = -Wall $(STD_DEFINES_AND_INCLUDES) -I${srcdir}/common
 AM_CXXFLAGS = -ldl -lpthread
 
+SUBDIRS = arm x86
+
+if ARCH_ARM
+ARCH_LA = arm/libarch.la
+else
+ARCH_LA = x86/libarch.la
+endif
+
+if USRP1 
+AM_CPPFLAGS += $(USRP_CFLAGS)
+else
+AM_CPPFLAGS += $(UHD_CFLAGS)
+endif
+
 rev2dir = $(datadir)/usrp/rev2
 rev4dir = $(datadir)/usrp/rev4
 
@@ -52,16 +55,16 @@ COMMON_SOURCES = \
 	radioVector.cpp \
 	radioClock.cpp \
 	sigProcLib.cpp \
-	DriveLoop.cpp \
-	Transceiver.cpp \
-	DummyLoad.cpp
+	signalVector.cpp \
+	Transceiver.cpp
 
 libtransceiver_la_SOURCES = \
-	$(COMMON_SOURCES)
+	$(COMMON_SOURCES) \
+	Resampler.cpp \
+	radioInterfaceResamp.cpp \
+	radioInterfaceDiversity.cpp
 
-noinst_PROGRAMS = \
-	transceiver \
-	sigProcLibTest 
+bin_PROGRAMS = osmo-trx
 
 noinst_HEADERS = \
 	Complex.h \
@@ -70,45 +73,26 @@ noinst_HEADERS = \
 	radioClock.h \
 	radioDevice.h \
 	sigProcLib.h \
+	signalVector.h \
 	Transceiver.h \
 	USRPDevice.h \
-	DummyLoad.h \
-	rcvLPF_651.h \
-	sendLPF_961.h
+	Resampler.h \
+	common/convolve.h \
+	common/convert.h \
+	common/scale.h \
+	common/mult.h
 
-transceiver_SOURCES = multiTRX.cpp
-transceiver_LDADD = \
+osmo_trx_SOURCES = osmo-trx.cpp
+osmo_trx_LDADD = \
 	libtransceiver.la \
+	$(ARCH_LA) \
 	$(GSM_LA) \
 	$(COMMON_LA) $(SQLITE_LA)
 
-sigProcLibTest_SOURCES = sigProcLibTest.cpp
-sigProcLibTest_LDADD = \
-	libtransceiver.la \
-	$(GSM_LA) \
-	$(COMMON_LA) $(SQLITE_LA)
-
-#uhd wins
-if UHD
-libtransceiver_la_SOURCES += UHDDevice.cpp
-transceiver_LDADD += $(UHD_LIBS)
-sigProcLibTest_LDADD += $(UHD_LIBS)
-else
-if USRP1
+if USRP1 
 libtransceiver_la_SOURCES += USRPDevice.cpp
-transceiver_LDADD += $(USRP_LIBS)
-sigProcLibTest_LDADD += $(USRP_LIBS)
+osmo_trx_LDADD += $(USRP_LIBS)
 else
-#we should never be here, as one of the above mustbe defined for us to build
+libtransceiver_la_SOURCES += UHDDevice.cpp
+osmo_trx_LDADD += $(UHD_LIBS)
 endif
-endif
-
-
-MOSTLYCLEANFILES +=
-
-#radioInterface.cpp
-#ComplexTest.cpp
-#sigProcLibTest.cpp
-#sweepGenerator.cpp
-#testRadio.cpp
-

Transceiver52M/README.Talgorithm

@@ -1,15 +0,0 @@
-Basic model:
-
-Have channel H = {h_0, h_1, ..., h_{K-1}}.
-Have received sequence Y = {y_0, ..., y_{K+N}}.
-Have transmitted sequence X = {x_0, ..., x_{N-1}}.
-Denote state S_n = {x_n, x_{n-1}, ..., x_{n-L}}.
-
-Define a bag as an unordered collection with two operations, add and take.
-We have three bags:
-   S: a bag of survivors.
-   F: a bag of available data structures.
-
-At time n, start with a non-empty bag S of survivors from time n-1.
-Take a member out of S, and create all possible branches and their corresponding metrics.  If metric ratio is above T, discard branch.  Otherwise, check branch against entry in pruning table P.  If branch metric is smaller than the existing entry's metric in P, then replace entry with branch.  Otherwise, discard branch.
-Once all possible branches of S have been created and pruned, S should be empty.Empty pruning table back into S, thus P is now empty.  Repeat.

Transceiver52M/Resampler.cpp

@@ -0,0 +1,252 @@
+/*
+ * Rational Sample Rate Conversion
+ * Copyright (C) 2012, 2013  Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+#include <malloc.h>
+#include <iostream>
+
+#include "Resampler.h"
+
+extern "C" {
+#include "convolve.h"
+}
+
+#ifndef M_PI
+#define M_PI			3.14159265358979323846264338327f
+#endif
+
+#define MAX_OUTPUT_LEN		4096
+
+static float sinc(float x)
+{
+	if (x == 0.0)
+		return 0.9999999999;
+
+	return sin(M_PI * x) / (M_PI * x);
+}
+
+bool Resampler::initFilters(float bw)
+{
+	size_t proto_len = p * filt_len;
+	float *proto, val, cutoff;
+	float sum = 0.0f, scale = 0.0f;
+	float midpt = (float) (proto_len - 1.0) / 2.0;
+
+	/* 
+	 * Allocate partition filters and the temporary prototype filter
+	 * according to numerator of the rational rate. Coefficients are
+	 * real only and must be 16-byte memory aligned for SSE usage.
+	 */
+	proto = new float[proto_len];
+	if (!proto)
+		return false;
+
+	partitions = (float **) malloc(sizeof(float *) * p);
+	if (!partitions) {
+		free(proto);
+		return false;
+	}
+
+	for (size_t i = 0; i < p; i++) {
+		partitions[i] = (float *)
+				memalign(16, filt_len * 2 * sizeof(float));
+	}
+
+	/* 
+	 * Generate the prototype filter with a Blackman-harris window.
+	 * Scale coefficients with DC filter gain set to unity divided
+	 * by the number of filter partitions. 
+	 */
+	float a0 = 0.35875;
+	float a1 = 0.48829;
+	float a2 = 0.14128;
+	float a3 = 0.01168;
+
+	if (p > q)
+		cutoff = (float) p;
+	else
+		cutoff = (float) q;
+
+	for (size_t i = 0; i < proto_len; i++) {
+		proto[i] = sinc(((float) i - midpt) / cutoff * bw);
+		proto[i] *= a0 -
+			    a1 * cos(2 * M_PI * i / (proto_len - 1)) +
+			    a2 * cos(4 * M_PI * i / (proto_len - 1)) -
+			    a3 * cos(6 * M_PI * i / (proto_len - 1));
+		sum += proto[i];
+	}
+	scale = p / sum;
+
+	/* Populate filter partitions from the prototype filter */
+	for (size_t i = 0; i < filt_len; i++) {
+		for (size_t n = 0; n < p; n++) {
+			partitions[n][2 * i + 0] = proto[i * p + n] * scale;
+			partitions[n][2 * i + 1] = 0.0f;
+		}
+	}
+
+	/* For convolution, we store the filter taps in reverse */ 
+	for (size_t n = 0; n < p; n++) {
+		for (size_t i = 0; i < filt_len / 2; i++) {
+			val = partitions[n][2 * i];
+			partitions[n][2 * i] = partitions[n][2 * (filt_len - 1 - i)];
+			partitions[n][2 * (filt_len - 1 - i)] = val;
+		}
+	}
+
+	delete proto;
+
+	return true;
+}
+
+void Resampler::releaseFilters()
+{
+	if (partitions) {
+		for (size_t i = 0; i < p; i++)
+			free(partitions[i]);
+	}
+
+	free(partitions);
+	partitions = NULL;
+}
+
+static bool check_vec_len(int in_len, int out_len, int p, int q)
+{
+	if (in_len % q) {
+		std::cerr << "Invalid input length " << in_len
+			  <<  " is not multiple of " << q << std::endl;
+		return false;
+	}
+
+	if (out_len % p) {
+		std::cerr << "Invalid output length " << out_len
+			  <<  " is not multiple of " << p << std::endl;
+		return false;
+	}
+
+	if ((in_len / q) != (out_len / p)) {
+		std::cerr << "Input/output block length mismatch" << std::endl;
+		std::cerr << "P = " << p << ", Q = " << q << std::endl;
+		std::cerr << "Input len: " << in_len << std::endl;
+		std::cerr << "Output len: " << out_len << std::endl;
+		return false;
+	}
+
+	if (out_len > MAX_OUTPUT_LEN) {
+		std::cerr << "Block length of " << out_len
+			  << " exceeds max of " << MAX_OUTPUT_LEN << std::endl;
+		return false;
+	}
+
+	return true;
+}
+
+void Resampler::computePath()
+{
+	for (int i = 0; i < MAX_OUTPUT_LEN; i++) {
+		in_index[i] = (q * i) / p;
+		out_path[i] = (q * i) % p;
+	}
+}
+
+int Resampler::rotate(float *in, size_t in_len, float *out, size_t out_len)
+{
+	int n, path;
+	int hist_len = filt_len - 1;
+
+	if (!check_vec_len(in_len, out_len, p, q))
+		return -1;
+
+	if (history_on) {
+		memcpy(&in[-2 * hist_len],
+		       history, hist_len * 2 * sizeof(float));
+	} else {
+		memset(&in[-2 * hist_len], 0,
+		       hist_len * 2 * sizeof(float));
+	}
+
+	/* Generate output from precomputed input/output paths */
+	for (size_t i = 0; i < out_len; i++) {
+		n = in_index[i]; 
+		path = out_path[i]; 
+
+		convolve_real(in, in_len,
+			      partitions[path], filt_len,
+			      &out[2 * i], out_len - i,
+			      n, 1, 1, 0);
+	}
+
+	/* Save history */
+	if (history_on) {
+		memcpy(history, &in[2 * (in_len - hist_len)],
+		       hist_len * 2 * sizeof(float));
+	}
+
+	return out_len;
+}
+
+bool Resampler::init(float bw)
+{
+	size_t hist_len = filt_len - 1;
+
+	/* Filterbank filter internals */
+	if (initFilters(bw) < 0)
+		return false;
+
+	/* History buffer */
+	history = new float[2 * hist_len];
+	memset(history, 0, 2 * hist_len * sizeof(float));
+
+	/* Precompute filterbank paths */
+	in_index = new size_t[MAX_OUTPUT_LEN];
+	out_path = new size_t[MAX_OUTPUT_LEN];
+	computePath();
+
+	return true;
+}
+
+size_t Resampler::len()
+{
+	return filt_len;
+}
+
+void Resampler::enableHistory(bool on)
+{
+	history_on = on;
+}
+
+Resampler::Resampler(size_t p, size_t q, size_t filt_len)
+	: in_index(NULL), out_path(NULL), partitions(NULL),
+	  history(NULL), history_on(true)
+{
+	this->p = p;
+	this->q = q;
+	this->filt_len = filt_len;
+}
+
+Resampler::~Resampler()
+{
+	releaseFilters();
+
+	delete history;
+	delete in_index;
+	delete out_path;
+}

Transceiver52M/Resampler.h

@@ -0,0 +1,83 @@
+/*
+ * Rational Sample Rate Conversion
+ * Copyright (C) 2012, 2013  Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _RESAMPLER_H_
+#define _RESAMPLER_H_
+
+class Resampler {
+public:
+	/* Constructor for rational sample rate conversion
+	 *   @param p numerator of resampling ratio
+	 *   @param q denominator of resampling ratio
+	 *   @param filt_len length of each polyphase subfilter 
+	 */
+	Resampler(size_t p, size_t q, size_t filt_len = 16);
+	~Resampler();
+
+	/* Initilize resampler filterbank.
+	 *   @param bw bandwidth factor on filter generation (pre-window)
+	 *   @return false on error, zero otherwise
+	 *
+	 * Automatic setting is to compute the filter to prevent aliasing with
+	 * a Blackman-Harris window. Adjustment is made through a bandwith
+	 * factor to shift the cutoff and/or the constituent filter lengths.
+	 * Calculation of specific rolloff factors or 3-dB cutoff points is
+	 * left as an excersize for the reader.
+	 */
+	bool init(float bw = 1.0f);
+
+	/* Rotate "commutator" and drive samples through filterbank
+	 *   @param in continuous buffer of input complex float values
+	 *   @param in_len input buffer length
+	 *   @param out continuous buffer of output complex float values
+	 *   @param out_len output buffer length
+	 *   @return number of samples outputted, negative on error
+         *
+	 * Input and output vector lengths must of be equal multiples of the
+	 * rational conversion rate denominator and numerator respectively.
+	 */
+	int rotate(float *in, size_t in_len, float *out, size_t out_len);
+
+	/* Get filter length
+	 *   @return number of taps in each filter partition 
+	 */
+	size_t len();
+
+	/*
+	 * Enable/disable history 
+	 */
+	void enableHistory(bool on);
+
+private:
+	size_t p;
+	size_t q;
+	size_t filt_len;
+	size_t *in_index;
+	size_t *out_path;
+
+	float **partitions;
+	float *history;
+	bool history_on;
+
+	bool initFilters(float bw);
+	void releaseFilters();
+	void computePath();
+};
+
+#endif /* _RESAMPLER_H_ */

Transceiver52M/Transceiver.h

@@ -1,6 +1,5 @@
 /*
-* Copyright 2008, 2012 Free Software Foundation, Inc.
-* Copyright 2013 Alexander Chemeris <Alexander.Chemeris@fairwaves.ru>
+* Copyright 2008 Free Software Foundation, Inc.
 *
 * This software is distributed under the terms of the GNU Public License.
 * See the COPYING file in the main directory for details.
@@ -23,14 +22,6 @@
 
 */
 
-
-
-/*
-	Compilation switches
-	TRANSMIT_LOGGING	write every burst on the given slot to a log
-*/
-
-#include "DriveLoop.h"
 #include "radioInterface.h"
 #include "Interthread.h"
 #include "GSMCommon.h"
@@ -39,165 +30,265 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
-/** Define this to be the slot number to be logged. */
-//#define TRANSMIT_LOGGING 1
+class Transceiver;
 
-/** FIFO thread loop */
-class FIFOServiceLoopThread : public Thread {
-public:
-  FIFOServiceLoopThread() : Thread("FIFOServiceLoopThread") {}
-  Thread::ReturnStatus shutdown();
+/** Channel descriptor for transceiver object and channel number pair */
+struct TransceiverChannel {
+  TransceiverChannel(Transceiver *trx, int num)
+  {
+    this->trx = trx;
+    this->num = num;
+  }
 
-protected:
-  virtual void runThread();
+  ~TransceiverChannel()
+  {
+  }
+
+  Transceiver *trx;
+  size_t num;
 };
 
-/** control message handler thread loop */
-class ControlServiceLoopThread : public Thread {
-public:
-  ControlServiceLoopThread() : Thread("ControlServiceLoopThread") {}
-  Thread::ReturnStatus shutdown();
+/** Internal transceiver state variables */
+struct TransceiverState {
+  TransceiverState();
+  ~TransceiverState();
 
-protected:
-  virtual void runThread();
-};
+  /* Initialize a multiframe slot in the filler table */
+  bool init(int filler, size_t sps, float scale, size_t rtsc, unsigned rach_delay);
 
-/** transmit queueing thread loop */
-class TransmitPriorityQueueServiceLoopThread : public Thread {
-public:
-  TransmitPriorityQueueServiceLoopThread() : Thread("TransmitPriorityQueueServiceLoopThread") {}
-  Thread::ReturnStatus shutdown();
+  int chanType[8];
 
-protected:
-  virtual void runThread();
+  /* Last timestamp of each timeslot's channel estimate */
+  GSM::Time chanEstimateTime[8];
+
+  /* The filler table */
+  signalVector *fillerTable[102][8];
+  int fillerModulus[8];
+  bool mRetrans;
+
+  /* Most recent channel estimate of all timeslots */
+  signalVector *chanResponse[8];
+
+  /* Most recent DFE feedback filter of all timeslots */
+  signalVector *DFEForward[8];
+  signalVector *DFEFeedback[8];
+
+  /* Most recent SNR, timing, and channel amplitude estimates */
+  float SNRestimate[8];
+  float chanRespOffset[8];
+  complex chanRespAmplitude[8];
+
+  /* Received noise energy levels */
+  float mNoiseLev;
+  noiseVector mNoises;
+
+  /* Shadowed downlink attenuation */
+  int mPower;
 };
 
 /** The Transceiver class, responsible for physical layer of basestation */
 class Transceiver {
-  
+public:
+  /** Transceiver constructor 
+      @param wBasePort base port number of UDP sockets
+      @param TRXAddress IP address of the TRX manager, as a string
+      @param wSPS number of samples per GSM symbol
+      @param wTransmitLatency initial setting of transmit latency
+      @param radioInterface associated radioInterface object
+  */
+  Transceiver(int wBasePort,
+              const char *TRXAddress,
+              size_t tx_sps, size_t rx_sps, size_t chans,
+              GSM::Time wTransmitLatency,
+              RadioInterface *wRadioInterface,
+              double wRssiOffset);
+
+  /** Destructor */
+  ~Transceiver();
+
+  /** Start the control loop */
+  bool init(int filler, size_t rtsc, unsigned rach_delay);
+
+  /** attach the radioInterface receive FIFO */
+  bool receiveFIFO(VectorFIFO *wFIFO, size_t chan)
+  {
+    if (chan >= mReceiveFIFO.size())
+      return false;
+
+    mReceiveFIFO[chan] = wFIFO;
+    return true;
+  }
+
+  /** accessor for number of channels */
+  size_t numChans() const { return mChans; };
+
+  /** Codes for channel combinations */
+  typedef enum {
+    FILL,               ///< Channel is transmitted, but unused
+    I,                  ///< TCH/FS
+    II,                 ///< TCH/HS, idle every other slot
+    III,                ///< TCH/HS
+    IV,                 ///< FCCH+SCH+CCCH+BCCH, uplink RACH
+    V,                  ///< FCCH+SCH+CCCH+BCCH+SDCCH/4+SACCH/4, uplink RACH+SDCCH/4
+    VI,                 ///< CCCH+BCCH, uplink RACH
+    VII,                ///< SDCCH/8 + SACCH/8
+    VIII,               ///< TCH/F + FACCH/F + SACCH/M
+    IX,                 ///< TCH/F + SACCH/M
+    X,                  ///< TCH/FD + SACCH/MD
+    XI,                 ///< PBCCH+PCCCH+PDTCH+PACCH+PTCCH
+    XII,                ///< PCCCH+PDTCH+PACCH+PTCCH
+    XIII,               ///< PDTCH+PACCH+PTCCH
+    NONE,               ///< Channel is inactive, default
+    LOOPBACK            ///< similar go VII, used in loopback testing
+  } ChannelCombination;
+
+  /** Codes for burst types of received bursts*/
+  typedef enum {
+    OFF,               ///< timeslot is off
+    TSC,	       ///< timeslot should contain a normal burst
+    RACH,	       ///< timeslot should contain an access burst
+    EDGE,	       ///< timeslot should contain an EDGE burst
+    IDLE	       ///< timeslot is an idle (or dummy) burst
+  } CorrType;
+
+  enum FillerType {
+    FILLER_DUMMY,
+    FILLER_ZERO,
+    FILLER_NORM_RAND,
+    FILLER_EDGE_RAND,
+    FILLER_ACCESS_RAND,
+  };
+
 private:
-  DriveLoop *mDriveLoop;
+  int mBasePort;
+  std::string mAddr;
 
-  int mBasePort;                  ///< Base port address for all our ports
-  std::string mTRXAddress;        ///< Address of the BTS TRX control interface
-  UDPSocket mDataSocket;	  ///< socket for writing to/reading from GSM core
-  UDPSocket mControlSocket;	  ///< socket for writing/reading control commands from GSM core
+  std::vector<UDPSocket *> mDataSockets;  ///< socket for writing to/reading from GSM core
+  std::vector<UDPSocket *> mCtrlSockets;  ///< socket for writing/reading control commands from GSM core
+  UDPSocket mClockSocket;                 ///< socket for writing clock updates to GSM core
 
-  VectorQueue  *mTransmitPriorityQueue;   ///< priority queue of transmit bursts received from GSM core
-  VectorFIFO*  mReceiveFIFO;      ///< radioInterface FIFO of receive bursts 
+  std::vector<VectorQueue> mTxPriorityQueues;   ///< priority queue of transmit bursts received from GSM core
+  std::vector<VectorFIFO *>  mReceiveFIFO;      ///< radioInterface FIFO of receive bursts
 
-  friend class FIFOServiceLoopThread;
-  FIFOServiceLoopThread mFIFOServiceLoop;      ///< thread to push/pull bursts into transmit/receive FIFO
-  friend class ControlServiceLoopThread;
-  ControlServiceLoopThread mControlServiceLoop;   ///< thread to process control messages from GSM core
-  friend class TransmitPriorityQueueServiceLoopThread;
-  TransmitPriorityQueueServiceLoopThread mTransmitPriorityQueueServiceLoop;///< thread to process transmit bursts from GSM core
+  std::vector<Thread *> mRxServiceLoopThreads;  ///< thread to pull bursts into receive FIFO
+  Thread *mRxLowerLoopThread;                   ///< thread to pull bursts into receive FIFO
+  Thread *mTxLowerLoopThread;                   ///< thread to push bursts into transmit FIFO
+  std::vector<Thread *> mControlServiceLoopThreads;         ///< thread to process control messages from GSM core
+  std::vector<Thread *> mTxPriorityQueueServiceLoopThreads; ///< thread to process transmit bursts from GSM core
 
-  int mChannel;                           ///< channelizer attach number between 0 and 'M-1'
+  GSM::Time mTransmitLatency;             ///< latency between basestation clock and transmit deadline clock
+  GSM::Time mLatencyUpdateTime;           ///< last time latency was updated
+  GSM::Time mTransmitDeadlineClock;       ///< deadline for pushing bursts into transmit FIFO 
+  GSM::Time mLastClockUpdateTime;         ///< last time clock update was sent up to core
 
   RadioInterface *mRadioInterface;	  ///< associated radioInterface object
   double txFullScale;                     ///< full scale input to radio
   double rxFullScale;                     ///< full scale output to radio
 
-  /** unmodulate a modulated burst */
-#ifdef TRANSMIT_LOGGING
-  void unModulateVector(signalVector wVector); 
-#endif
+  double rssiOffset;                      ///< RSSI to dBm conversion offset
 
   /** modulate and add a burst to the transmit queue */
-  void addRadioVector(BitVector &burst,
-		      int RSSI,
-		      GSM::Time &wTime);
+  void addRadioVector(size_t chan, BitVector &bits,
+                      int RSSI, GSM::Time &wTime);
+
+  /** Update filler table */
+  void updateFillerTable(size_t chan, radioVector *burst);
 
   /** Push modulated burst into transmit FIFO corresponding to a particular timestamp */
   void pushRadioVector(GSM::Time &nowTime);
 
-  /** Pull and demodulate a burst from the receive FIFO */ 
-  SoftVector *pullRadioVector(GSM::Time &wTime,
-			   int &RSSI,
-			   int &timingOffset);
-   
+  /** Pull and demodulate a burst from the receive FIFO */
+  SoftVector *pullRadioVector(GSM::Time &wTime, double &RSSI, bool &isRssiValid,
+                              double &timingOffset, double &noise,
+                              size_t chan = 0);
+
+  /** Set modulus for specific timeslot */
+  void setModulus(size_t timeslot, size_t chan);
+
+  /** return the expected burst type for the specified timestamp */
+  CorrType expectedCorrType(GSM::Time currTime, size_t chan);
+
   /** send messages over the clock socket */
   void writeClockInterface(void);
 
-  void pullFIFO(void);                 ///< blocking call on receive FIFO 
+  /** Detectbursts */
+  int detectBurst(signalVector &burst,
+                  complex &amp, float &toa, CorrType type);
 
-  signalVector *gsmPulse;              ///< the GSM shaping pulse for modulation
+  /** Demodulate burst and output soft bits */
+  SoftVector *demodulate(signalVector &burst,
+                         complex amp, float toa, CorrType type);
 
-  int mSamplesPerSymbol;               ///< number of samples per GSM symbol
+  int mSPSTx;                          ///< number of samples per Tx symbol
+  int mSPSRx;                          ///< number of samples per Rx symbol
+  size_t mChans;
 
-  bool mOn;			       ///< flag to indicate that transceiver is powered on
-  bool mRunning;                       ///< flag to indicate control loop is running
-  bool mPrimary;                       ///< flag to indicate C0 channel 
+  bool mOn;	                           ///< flag to indicate that transceiver is powered on
+  bool mHandover[8][8];                ///< expect handover to the timeslot/subslot
   double mTxFreq;                      ///< the transmit frequency
   double mRxFreq;                      ///< the receive frequency
-  double mFreqOffset;                  ///< RF frequency offset
-  int mPower;                          ///< the transmit power in dB
-  double mEnergyThreshold;             ///< threshold to determine if received data is potentially a GSM burst
-  GSM::Time prevFalseDetectionTime;    ///< last timestamp of a false energy detection
-  unsigned mMaxExpectedDelay;            ///< maximum expected time-of-arrival offset in GSM symbols
+  unsigned mTSC;                       ///< the midamble sequence code
+  unsigned mMaxExpectedDelayAB;        ///< maximum expected time-of-arrival offset in GSM symbols for Access Bursts (RACH)
+  unsigned mMaxExpectedDelayNB;        ///< maximum expected time-of-arrival offset in GSM symbols for Normal Bursts
+  unsigned mWriteBurstToDiskMask;      ///< debug: bitmask to indicate which timeslots to dump to disk
 
-  GSM::Time    channelEstimateTime[8]; ///< last timestamp of each timeslot's channel estimate
-  signalVector *channelResponse[8];    ///< most recent channel estimate of all timeslots
-  float        SNRestimate[8];         ///< most recent SNR estimate of all timeslots
-  signalVector *DFEForward[8];         ///< most recent DFE feedforward filter of all timeslots
-  signalVector *DFEFeedback[8];        ///< most recent DFE feedback filter of all timeslots
-  float        chanRespOffset[8];      ///< most recent timing offset, e.g. TOA, of all timeslots
-  complex      chanRespAmplitude[8];   ///< most recent channel amplitude of all timeslots
+  std::vector<TransceiverState> mStates;
 
-  static int mTSC;                     ///< the midamble sequence code
+  /** Start and stop I/O threads through the control socket API */
+  bool start();
+  void stop();
 
-public:
-
-  /** Transceiver constructor 
-      @param wBasePort base port number of UDP sockets
-      @param TRXAddress IP address of the TRX manager, as a string
-      @param wSamplesPerSymbol number of samples per GSM symbol
-      @param wTransmitLatency initial setting of transmit latency
-      @param radioInterface associated radioInterface object
-  */
-  Transceiver(int wBasePort, const char *TRXAddress,
-	      DriveLoop *wDriveLoop, RadioInterface *wRadioInterface,
-	      int wSamplesPerSymbol = SAMPSPERSYM,
-	      int wChannel = 0, bool wPrimary = true);
-
-  /** Destructor */
-  ~Transceiver();
-
-  /** start the Transceiver */
-  void start();
-
-  /** shutdown (teardown threads) the Transceiver */
-  void shutdown();
+  /** Protect destructor accessable stop call */
+  Mutex mLock;
 
 protected:
+  /** drive lower receive I/O and burst generation */
+  void driveReceiveRadio();
 
-  /** drive reception and demodulation of GSM bursts */ 
-  void driveReceiveFIFO();
+  /** drive demodulation of GSM bursts */
+  void driveReceiveFIFO(size_t chan);
 
   /** drive transmission of GSM bursts */
-  void driveTransmitFIFO();
+  void driveTxFIFO();
 
   /** drive handling of control messages from GSM core */
-  void driveControl();
+  void driveControl(size_t chan);
 
   /**
     drive modulation and sorting of GSM bursts from GSM core
     @return true if a burst was transferred successfully
   */
-  bool driveTransmitPriorityQueue();
+  bool driveTxPriorityQueue(size_t chan);
+
+  friend void *RxUpperLoopAdapter(TransceiverChannel *);
+
+  friend void *TxUpperLoopAdapter(TransceiverChannel *);
+
+  friend void *RxLowerLoopAdapter(Transceiver *);
+
+  friend void *TxLowerLoopAdapter(Transceiver *);
+
+  friend void *ControlServiceLoopAdapter(TransceiverChannel *);
+
 
   void reset();
 
-  /** return transceiver on/off status */ 
-  bool on() { return mOn; }
-
-  /** return control loop operational status */ 
-  bool running() { return mRunning; }
-
-  /** return the drive loop pointer */
-  DriveLoop *getDriveLoop() { return mDriveLoop; }
-  
   /** set priority on current thread */
-  void setPriority() { mRadioInterface->setPriority(); }
+  void setPriority(float prio = 0.5) { mRadioInterface->setPriority(prio); }
+
+  void logRxBurst(size_t chan, SoftVector *burst, GSM::Time time, double dbm,
+                  double rssi, double noise, double toa);
 };
+
+void *RxUpperLoopAdapter(TransceiverChannel *);
+
+/** Main drive threads */
+void *RxLowerLoopAdapter(Transceiver *);
+void *TxLowerLoopAdapter(Transceiver *);
+
+/** control message handler thread loop */
+void *ControlServiceLoopAdapter(TransceiverChannel *);
+
+/** transmit queueing thread loop */
+void *TxUpperLoopAdapter(TransceiverChannel *);
+

Transceiver52M/USRPDevice.cpp

@@ -59,14 +59,28 @@ const dboardConfigType dboardConfig = TXA_RXB;
 
 const double USRPDevice::masterClockRate = 52.0e6;
 
-USRPDevice::USRPDevice(int sps, bool skipRx)
-  : skipRx(skipRx)
+USRPDevice::USRPDevice(size_t sps)
 {
   LOG(INFO) << "creating USRP device...";
+
+  this->sps = sps;
   decimRate = (unsigned int) round(masterClockRate/((GSMRATE) * (double) sps));
   actualSampleRate = masterClockRate/decimRate;
   rxGain = 0;
 
+  /*
+   * Undetermined delay b/w ping response timestamp and true
+   * receive timestamp. Values are empirically measured. With
+   * split sample rate Tx/Rx - 4/1 sps we need to need to
+   * compensate for advance rather than delay.
+   */
+  if (sps == 1)
+    pingOffset = 272;
+  else if (sps == 4)
+    pingOffset = 269 - 7500;
+  else
+    pingOffset = 0;
+
 #ifdef SWLOOPBACK 
   samplePeriod = 1.0e6/actualSampleRate;
   loopbackBufferSize = 0;
@@ -75,7 +89,7 @@ USRPDevice::USRPDevice(int sps, bool skipRx)
 #endif
 }
 
-int USRPDevice::open(const std::string &)
+int USRPDevice::open(const std::string &, bool, bool)
 {
   writeLock.unlock();
 
@@ -86,14 +100,13 @@ int USRPDevice::open(const std::string &)
   m_uRx.reset();
   if (!skipRx) {
   try {
-    m_uRx = usrp_standard_rx_sptr(usrp_standard_rx::make(0,decimRate,1,-1,
-                                                         usrp_standard_rx::FPGA_MODE_NORMAL,
-                                                         1024,16*8,rbf));
-#ifdef HAVE_LIBUSRP_3_2
+    m_uRx = usrp_standard_rx_sptr(usrp_standard_rx::make(
+                                        0, decimRate * sps, 1, -1,
+                                        usrp_standard_rx::FPGA_MODE_NORMAL,
+                                        1024, 16 * 8, rbf));
     m_uRx->set_fpga_master_clock_freq(masterClockRate);
-#endif
   }
-  
+
   catch(...) {
     LOG(ALERT) << "make failed on Rx";
     m_uRx.reset();
@@ -110,13 +123,12 @@ int USRPDevice::open(const std::string &)
   }
 
   try {
-    m_uTx = usrp_standard_tx_sptr(usrp_standard_tx::make(0,decimRate*2,1,-1,
-                                                         1024,16*8,rbf));
-#ifdef HAVE_LIBUSRP_3_2
+    m_uTx = usrp_standard_tx_sptr(usrp_standard_tx::make(
+                                        0, decimRate * 2, 1, -1,
+                                        1024, 16 * 8, rbf));
     m_uTx->set_fpga_master_clock_freq(masterClockRate);
-#endif
   }
-  
+
   catch(...) {
     LOG(ALERT) << "make failed on Tx";
     m_uTx.reset();
@@ -253,49 +265,66 @@ double USRPDevice::minRxGain()
   return m_dbRx->gain_min();
 }
 
-double USRPDevice::setTxGain(double dB) {
- 
-   writeLock.lock();
-   if (dB > maxTxGain()) dB = maxTxGain();
-   if (dB < minTxGain()) dB = minTxGain();
+double USRPDevice::setTxGain(double dB, size_t chan)
+{
+  if (chan) {
+    LOG(ALERT) << "Invalid channel " << chan;
+    return 0.0;
+  }
 
-   LOG(NOTICE) << "Setting TX gain to " << dB << " dB.";
+  writeLock.lock();
+  if (dB > maxTxGain())
+    dB = maxTxGain();
+  if (dB < minTxGain())
+    dB = minTxGain();
 
-   if (!m_dbTx->set_gain(dB))
-     LOG(ERR) << "Error setting TX gain";
+  LOG(NOTICE) << "Setting TX gain to " << dB << " dB.";
 
-   writeLock.unlock();
-  
-   return dB;
+  if (!m_dbTx->set_gain(dB))
+    LOG(ERR) << "Error setting TX gain";
+
+  writeLock.unlock();
+
+  return dB;
 }
 
 
-double USRPDevice::setRxGain(double dB) {
+double USRPDevice::setRxGain(double dB, size_t chan)
+{
+  if (chan) {
+    LOG(ALERT) << "Invalid channel " << chan;
+    return 0.0;
+  }
 
-   writeLock.lock();
-   if (dB > maxRxGain()) dB = maxRxGain();
-   if (dB < minRxGain()) dB = minRxGain();
-   
-   LOG(NOTICE) << "Setting RX gain to " << dB << " dB.";
+  dB = 47.0;
 
-   if (!m_dbRx->set_gain(dB))
-     LOG(ERR) << "Error setting RX gain";
-  
-   writeLock.unlock();
-   
-   return dB;
+  writeLock.lock();
+  if (dB > maxRxGain())
+    dB = maxRxGain();
+  if (dB < minRxGain())
+    dB = minRxGain();
+
+  LOG(NOTICE) << "Setting RX gain to " << dB << " dB.";
+
+  if (!m_dbRx->set_gain(dB))
+    LOG(ERR) << "Error setting RX gain";
+
+  writeLock.unlock();
+
+  return dB;
 }
 
 
 // NOTE: Assumes sequential reads
-int USRPDevice::readSamples(short *buf, int len, bool *overrun, 
-			    TIMESTAMP timestamp,
-			    bool *underrun,
-			    unsigned *RSSI) 
+int USRPDevice::readSamples(std::vector<short *> &bufs, int len, bool *overrun,
+                            TIMESTAMP timestamp, bool *underrun, unsigned *RSSI)
 {
 #ifndef SWLOOPBACK 
-  if (!m_uRx) return 0;
-  
+  if (!m_uRx)
+    return 0;
+
+  short *buf = bufs[0];
+
   timestamp += timestampOffset;
   
   if (timestamp + len < timeStart) {
@@ -341,7 +370,7 @@ int USRPDevice::readSamples(short *buf, int len, bool *overrun,
         uint32_t word2 = usrp_to_host_u32(tmpBuf[2]);
 	if ((word2 >> 16) == ((0x01 << 8) | 0x02)) {
           timestamp -= timestampOffset;
-	  timestampOffset = pktTimestamp - pingTimestamp + PINGOFFSET;
+	  timestampOffset = pktTimestamp - pingTimestamp + pingOffset;
 	  LOG(DEBUG) << "updating timestamp offset to: " << timestampOffset;
           timestamp += timestampOffset;
 	  isAligned = true;
@@ -437,17 +466,20 @@ int USRPDevice::readSamples(short *buf, int len, bool *overrun,
 #endif
 }
 
-int USRPDevice::writeSamples(short *buf, int len, bool *underrun, 
-			     unsigned long long timestamp,
-			     bool isControl) 
+int USRPDevice::writeSamples(std::vector<short *> &bufs, int len,
+                             bool *underrun, unsigned long long timestamp,
+                             bool isControl)
 {
   writeLock.lock();
 
 #ifndef SWLOOPBACK 
-  if (!m_uTx) return 0;
- 
+  if (!m_uTx)
+    return 0;
+
+  short *buf = bufs[0];
+
   static uint32_t outData[128*20];
- 
+
   for (int i = 0; i < len*2; i++) {
 	buf[i] = host_to_usrp_short(buf[i]);
   }
@@ -499,7 +531,9 @@ bool USRPDevice::updateAlignment(TIMESTAMP timestamp)
   uint32_t *wordPtr = (uint32_t *) data;
   *wordPtr = host_to_usrp_u32(*wordPtr);
   bool tmpUnderrun;
-  if (writeSamples((short *) data,1,&tmpUnderrun,timestamp & 0x0ffffffffll,true)) {
+
+  std::vector<short *> buf(1, data);
+  if (writeSamples(buf, 1, &tmpUnderrun, timestamp & 0x0ffffffffll, true)) {
     pingTimestamp = timestamp;
     return true;
   }
@@ -510,10 +544,15 @@ bool USRPDevice::updateAlignment(TIMESTAMP timestamp)
 }
 
 #ifndef SWLOOPBACK 
-bool USRPDevice::setTxFreq(double wFreq)
+bool USRPDevice::setTxFreq(double wFreq, size_t chan)
 {
   usrp_tune_result result;
 
+  if (chan) {
+    LOG(ALERT) << "Invalid channel " << chan;
+    return false;
+  }
+
   if (m_uTx->tune(txSubdevSpec.side, m_dbTx, wFreq, &result)) {
     LOG(INFO) << "set TX: " << wFreq << std::endl
               << "    baseband freq: " << result.baseband_freq << std::endl
@@ -530,10 +569,15 @@ bool USRPDevice::setTxFreq(double wFreq)
   }
 }
 
-bool USRPDevice::setRxFreq(double wFreq)
+bool USRPDevice::setRxFreq(double wFreq, size_t chan)
 {
   usrp_tune_result result;
 
+  if (chan) {
+    LOG(ALERT) << "Invalid channel " << chan;
+    return false;
+  }
+
   if (m_uRx->tune(0, m_dbRx, wFreq, &result)) {
     LOG(INFO) << "set RX: " << wFreq << std::endl
               << "    baseband freq: " << result.baseband_freq << std::endl
@@ -556,7 +600,8 @@ bool USRPDevice::setTxFreq(double wFreq) { return true;};
 bool USRPDevice::setRxFreq(double wFreq) { return true;};
 #endif
 
-RadioDevice *RadioDevice::make(int sps, bool skipRx)
+RadioDevice *RadioDevice::make(size_t tx_sps, size_t rx_sps,
+			       size_t chans, bool diversity, double)
 {
-	return new USRPDevice(sps, skipRx);
+	return new USRPDevice(tx_sps);
 }

Transceiver52M/USRPDevice.h

@@ -21,29 +21,17 @@
 
 #include "radioDevice.h"
 
-#ifdef HAVE_LIBUSRP_3_3 // [
-#  include <usrp/usrp_standard.h>
-#  include <usrp/usrp_bytesex.h>
-#  include <usrp/usrp_prims.h>
-#else // HAVE_LIBUSRP_3_3 ][
-#  include "usrp_standard.h"
-#  include "usrp_bytesex.h"
-#  include "usrp_prims.h"
-#endif // !HAVE_LIBUSRP_3_3 ]
+#include <usrp/usrp_standard.h>
+#include <usrp/usrp_bytesex.h>
+#include <usrp/usrp_prims.h>
 #include <sys/time.h>
 #include <math.h>
 #include <string>
 #include <iostream>
 
-
-/** Define types which are not defined in libusrp-3.1 */
-#ifndef HAVE_LIBUSRP_3_2
 #include <boost/shared_ptr.hpp>
 typedef boost::shared_ptr<usrp_standard_tx> usrp_standard_tx_sptr;
 typedef boost::shared_ptr<usrp_standard_rx> usrp_standard_rx_sptr;
-#endif // HAVE_LIBUSRP_3_2
-
-
 
 /** A class to handle a USRP rev 4, with a two RFX900 daughterboards */
 class USRPDevice: public RadioDevice {
@@ -60,6 +48,7 @@ private:
   usrp_subdev_spec rxSubdevSpec;
   usrp_subdev_spec txSubdevSpec;
 
+  int sps;
   double actualSampleRate;	///< the actual USRP sampling rate
   unsigned int decimRate;	///< the USRP decimation rate
 
@@ -87,7 +76,8 @@ private:
   TIMESTAMP timestampOffset;       ///< timestamp offset b/w Tx and Rx blocks
   TIMESTAMP latestWriteTimestamp;  ///< timestamp of most recent ping command
   TIMESTAMP pingTimestamp;	   ///< timestamp of most recent ping response
-  static const TIMESTAMP PINGOFFSET = 272;  ///< undetermined delay b/w ping response timestamp and true receive timestamp
+
+  long long  pingOffset;
   unsigned long hi32Timestamp;
   unsigned long lastPktTimestamp;
 
@@ -103,19 +93,13 @@ private:
   bool   firstRead;
 #endif
 
-  /** Set the transmission frequency */
-  bool tx_setFreq(double freq, double *actual_freq);
-
-  /** Set the receiver frequency */
-  bool rx_setFreq(double freq, double *actual_freq);
-  
  public:
 
   /** Object constructor */
-  USRPDevice(int sps, bool skipRx);
+  USRPDevice(size_t sps);
 
   /** Instantiate the USRP */
-  int open(const std::string &);
+  int open(const std::string &, bool, bool);
 
   /** Start the USRP */
   bool start();
@@ -124,7 +108,7 @@ private:
   bool stop();
 
   /** Set priority not supported */
-  void setPriority() { return; }
+  void setPriority(float prio = 0.5) { }
 
   enum TxWindowType getWindowType() { return TX_WINDOW_USRP1; }
 
@@ -138,10 +122,9 @@ private:
 	@param RSSI The received signal strength of the read result
 	@return The number of samples actually read
   */
-  int  readSamples(short *buf, int len, bool *overrun, 
-		   TIMESTAMP timestamp = 0xffffffff,
-		   bool *underrun = NULL,
-		   unsigned *RSSI = NULL);
+  int readSamples(std::vector<short *> &buf, int len, bool *overrun,
+                  TIMESTAMP timestamp = 0xffffffff, bool *underrun = NULL,
+                  unsigned *RSSI = NULL);
   /**
         Write samples to the USRP.
         @param buf Contains the data to be written.
@@ -151,18 +134,17 @@ private:
         @param isControl Set if data is a control packet, e.g. a ping command
         @return The number of samples actually written
   */
-  int  writeSamples(short *buf, int len, bool *underrun, 
-		    TIMESTAMP timestamp = 0xffffffff,
-		    bool isControl = false);
- 
+  int writeSamples(std::vector<short *> &bufs, int len, bool *underrun,
+                   TIMESTAMP timestamp = 0xffffffff, bool isControl = false);
+
   /** Update the alignment between the read and write timestamps */
   bool updateAlignment(TIMESTAMP timestamp);
-  
+
   /** Set the transmitter frequency */
-  bool setTxFreq(double wFreq);
+  bool setTxFreq(double wFreq, size_t chan = 0);
 
   /** Set the receiver frequency */
-  bool setRxFreq(double wFreq);
+  bool setRxFreq(double wFreq, size_t chan = 0);
 
   /** Returns the starting write Timestamp*/
   TIMESTAMP initialWriteTimestamp(void) { return 20000;}
@@ -177,10 +159,10 @@ private:
   double fullScaleOutputValue() {return 9450.0;}
 
   /** sets the receive chan gain, returns the gain setting **/
-  double setRxGain(double dB);
+  double setRxGain(double dB, size_t chan = 0);
 
   /** get the current receive gain */
-  double getRxGain(void) {return rxGain;}
+  double getRxGain(size_t chan = 0) { return rxGain; }
 
   /** return maximum Rx Gain **/
   double maxRxGain(void);
@@ -189,7 +171,7 @@ private:
   double minRxGain(void);
 
   /** sets the transmit chan gain, returns the gain setting **/
-  double setTxGain(double dB);
+  double setTxGain(double dB, size_t chan = 0);
 
   /** return maximum Tx Gain **/
   double maxTxGain(void);
@@ -197,13 +179,12 @@ private:
   /** return minimum Rx Gain **/
   double minTxGain(void);
 
-
   /** Return internal status values */
-  inline double getTxFreq() { return 0;}
-  inline double getRxFreq() { return 0;}
-  inline double getSampleRate() {return actualSampleRate;}
+  inline double getTxFreq(size_t chan = 0) { return 0; }
+  inline double getRxFreq(size_t chan = 0) { return 0; }
+  inline double getSampleRate() { return actualSampleRate; }
   inline double numberRead() { return samplesRead; }
-  inline double numberWritten() { return samplesWritten;}
+  inline double numberWritten() { return samplesWritten; }
 
 };
 

Transceiver52M/USRPping.cpp

@@ -1,95 +0,0 @@
-/*
-* Copyright 2008, 2009 Free Software Foundation, Inc.
-*
-* This software is distributed under the terms of the GNU Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-
-
-#include <stdint.h>
-#include <stdio.h>
-#include <Logger.h>
-#include <Configuration.h>
-#include "radioDevice.h"
-
-ConfigurationTable gConfig;
-
-using namespace std;
-
-int main(int argc, char *argv[]) {
-
-  // Configure logger.
-  if (argc>1) gLogInit(argv[1]);
-  else gLogInit("DEBUG");
-  //if (argc>2) gSetLogFile(argv[2]);
-
-  RadioDevice *usrp = RadioDevice::make(52.0e6/192.0, 1);
-
-  usrp->open("");
-
-  TIMESTAMP timestamp;
-
-  usrp->setTxFreq(825.4e6);
-  usrp->setRxFreq(825.4e6);
-
-  usrp->start();
-
-  usrp->setRxGain(57);
-
-  LOG(INFO) << "Looping...";
-  bool underrun;
-
-  short data[]={0x00,0x02};
-
-  usrp->updateAlignment(20000);
-  usrp->updateAlignment(21000);
-
-  int numpkts = 1;
-  short data2[512*2*numpkts];
-  for (int i = 0; i < 512*numpkts; i++) {
-    data2[i<<1] = 10000;//4096*cos(2*3.14159*(i % 126)/126);
-    data2[(i<<1) + 1] = 10000;//4096*sin(2*3.14159*(i % 126)/126);
-  }
-
-  for (int i = 0; i < 1; i++) 
-    usrp->writeSamples((short*) data2,512*numpkts,&underrun,102000+i*1000);
-
-  timestamp = 19000;
-  double sum = 0.0;
-  unsigned long num = 0;
-  while (1) {
-    short readBuf[512*2];
-    int rd = usrp->readSamples(readBuf,512,&underrun,timestamp);
-    if (rd) {
-      LOG(INFO) << "rcvd. data@:" << timestamp;
-      for (int i = 0; i < 512; i++) {
-        uint32_t *wordPtr = (uint32_t *) &readBuf[2*i];
-	printf ("%llu: %d %d\n", timestamp+i,readBuf[2*i],readBuf[2*i+1]);
-        sum += (readBuf[2*i+1]*readBuf[2*i+1] + readBuf[2*i]*readBuf[2*i]);
-        num++;
-        //if (num % 10000 == 0) printf("avg pwr: %f\n",sum/num);
-      }
-      timestamp += rd;
-      //usrp->writeSamples((short*) data2,512*numpkts,&underrun,timestamp+1000);
-    }
-  }
-
-}

Transceiver52M/arm/Makefile.am

@@ -0,0 +1,23 @@
+if ARCH_ARM
+if ARCH_ARM_A15
+ARCH_FLAGS = -mfpu=neon-vfpv4
+else
+ARCH_FLAGS = -mfpu=neon
+endif
+
+AM_CFLAGS = -Wall $(ARCH_FLAGS) -std=gnu99 -I../common
+AM_CCASFLAGS = $(ARCH_FLAGS)
+
+noinst_LTLIBRARIES = libarch.la
+
+libarch_la_SOURCES = \
+	../common/convolve_base.c \
+	convert.c \
+	convert_neon.S \
+	convolve.c \
+	convolve_neon.S \
+	scale.c \
+	scale_neon.S \
+	mult.c \
+	mult_neon.S
+endif

Transceiver52M/arm/convert.c

@@ -0,0 +1,96 @@
+/*
+ * NEON type conversions
+ * Copyright (C) 2012, 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include "convert.h"
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+void neon_convert_ps_si16_4n(short *, const float *, const float *, int);
+void neon_convert_si16_ps_4n(float *, const short *, int);
+
+#ifndef HAVE_NEON
+static void convert_si16_ps(float *out, const short *in, int len)
+{
+	for (int i = 0; i < len; i++)
+		out[i] = in[i];
+}
+
+static void convert_ps_si16(short *out, const float *in, float scale, int len)
+{
+	for (int i = 0; i < len; i++)
+		out[i] = in[i] * scale;
+}
+#else
+/* 4*N 16-bit signed integer conversion with remainder */
+static void neon_convert_si16_ps(float *out,
+				 const short *in,
+				 int len)
+{
+	int start = len / 4 * 4;
+
+	neon_convert_si16_ps_4n(out, in, len >> 2);
+
+	for (int i = 0; i < len % 4; i++)
+		out[start + i] = (float) in[start + i];
+}
+
+/* 4*N 16-bit signed integer conversion with remainder */
+static void neon_convert_ps_si16(short *out,
+				 const float *in,
+				 const float *scale,
+				 int len)
+{
+	int start = len / 4 * 4;
+
+	neon_convert_ps_si16_4n(out, in, scale, len >> 2);
+
+	for (int i = 0; i < len % 4; i++)
+		out[start + i] = (short) (in[start + i] * (*scale));
+}
+#endif
+
+void convert_float_short(short *out, const float *in, float scale, int len)
+{
+#ifdef HAVE_NEON
+        float q[4] = { scale, scale, scale, scale };
+
+	if (len % 4)
+		neon_convert_ps_si16(out, in, q, len);
+	else
+		neon_convert_ps_si16_4n(out, in, q, len >> 2);
+#else
+	convert_ps_si16(out, in, scale, len);
+#endif
+}
+
+void convert_short_float(float *out, const short *in, int len)
+{
+#ifdef HAVE_NEON
+	if (len % 4)
+		neon_convert_si16_ps(out, in, len);
+	else
+		neon_convert_si16_ps_4n(out, in, len >> 2);
+#else
+	convert_si16_ps(out, in, len);
+#endif
+}

Transceiver52M/arm/convert_neon.S

@@ -0,0 +1,51 @@
+/*
+ * NEON type conversions
+ * Copyright (C) 2012, 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+	.syntax unified
+	.text
+	.align 2
+	.global neon_convert_ps_si16_4n
+	.type neon_convert_ps_si16_4n, %function
+neon_convert_ps_si16_4n:
+	vld1.32          {q1}, [r2]
+.loop_fltint:
+	vld1.64       {d0-d1}, [r1]!
+	vmul.f32           q0, q1
+	vcvt.s32.f32       q2, q0
+	vqmovn.s32         d0, q2
+	vst1.64          {d0}, [r0]!
+	subs               r3, #1
+	bne          .loop_fltint
+	bx                 lr
+	.size neon_convert_ps_si16_4n, .-neon_convert_ps_si16_4n
+	.text
+	.align 2
+	.global neon_convert_si16_ps_4n
+	.type neon_convert_si16_ps_4n, %function
+neon_convert_si16_ps_4n:
+.loop_intflt:
+	vld1.64          {d0}, [r1]!
+	vmovl.s16          q1, d0
+	vcvt.f32.s32       q0, q1
+	vst1.64          {q0}, [r0]!
+	subs               r2, #1
+	bne          .loop_intflt
+        bx                 lr
+	.size neon_convert_si16_ps_4n, .-neon_convert_si16_ps_4n
+	.section .note.GNU-stack,"",%progbits

Transceiver52M/arm/convolve.c

@@ -0,0 +1,139 @@
+/*
+ * NEON Convolution
+ * Copyright (C) 2012, 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include <stdio.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Forward declarations from base implementation */
+int _base_convolve_real(float *x, int x_len,
+			float *h, int h_len,
+			float *y, int y_len,
+			int start, int len,
+			int step, int offset);
+
+int _base_convolve_complex(float *x, int x_len,
+			   float *h, int h_len,
+			   float *y, int y_len,
+			   int start, int len,
+			   int step, int offset);
+
+int bounds_check(int x_len, int h_len, int y_len,
+		 int start, int len, int step);
+
+#ifdef HAVE_NEON
+/* Calls into NEON assembler */
+void neon_conv_real4(float *x, float *h, float *y, int len);
+void neon_conv_real8(float *x, float *h, float *y, int len);
+void neon_conv_real12(float *x, float *h, float *y, int len);
+void neon_conv_real16(float *x, float *h, float *y, int len);
+void neon_conv_real20(float *x, float *h, float *y, int len);
+void mac_cx_neon4(float *x, float *h, float *y, int len);
+
+/* Complex-complex convolution */
+static void neon_conv_cmplx_4n(float *x, float *h, float *y, int h_len, int len)
+{
+	for (int i = 0; i < len; i++)
+		mac_cx_neon4(&x[2 * i], h, &y[2 * i], h_len >> 2);
+}
+#endif
+
+/* API: Aligned complex-real */
+int convolve_real(float *x, int x_len,
+		  float *h, int h_len,
+		  float *y, int y_len,
+		  int start, int len,
+		  int step, int offset)
+{
+	void (*conv_func)(float *, float *, float *, int) = NULL;
+
+	if (bounds_check(x_len, h_len, y_len, start, len, step) < 0)
+		return -1;
+
+	memset(y, 0, len * 2 * sizeof(float));
+
+#ifdef HAVE_NEON
+	if (step <= 4) {
+		switch (h_len) {
+		case 4:
+			conv_func = neon_conv_real4;
+			break;
+		case 8:
+			conv_func = neon_conv_real8;
+			break;
+		case 12:
+			conv_func = neon_conv_real12;
+			break;
+		case 16:
+			conv_func = neon_conv_real16;
+			break;
+		case 20:
+			conv_func = neon_conv_real20;
+			break;
+		}
+	}
+#endif
+	if (conv_func) {
+		conv_func(&x[2 * (-(h_len - 1) + start)],
+			  h, y, len);
+	} else {
+		_base_convolve_real(x, x_len,
+				    h, h_len,
+				    y, y_len,
+				    start, len, step, offset);
+	}
+
+	return len;
+}
+
+
+/* API: Aligned complex-complex */
+int convolve_complex(float *x, int x_len,
+		     float *h, int h_len,
+		     float *y, int y_len,
+		     int start, int len,
+		     int step, int offset)
+{
+	void (*conv_func)(float *, float *, float *, int, int) = NULL;
+
+	if (bounds_check(x_len, h_len, y_len, start, len, step) < 0)
+		return -1;
+
+	memset(y, 0, len * 2 * sizeof(float));
+
+#ifdef HAVE_NEON
+	if (step <= 4 && !(h_len % 4))
+		conv_func = neon_conv_cmplx_4n;
+#endif
+	if (conv_func) {
+		conv_func(&x[2 * (-(h_len - 1) + start)],
+			  h, y, h_len, len);
+	} else {
+		_base_convolve_complex(x, x_len,
+				       h, h_len,
+				       y, y_len,
+				       start, len, step, offset);
+	}
+
+	return len;
+}

Transceiver52M/arm/convolve_neon.S

@@ -0,0 +1,277 @@
+/*
+ * NEON Convolution
+ * Copyright (C) 2012, 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+	.syntax unified
+	.text
+	.align 2
+	.global neon_conv_real4
+	.type neon_conv_real4, %function
+neon_conv_real4:
+	push            {r4, lr}
+	vpush       {q4-q7}
+	vld2.32     {q0-q1}, [r1]
+	ldr              r4, =8
+.neon_conv_loop4:
+	vld2.32     {q2-q3}, [r0], r4
+	vmul.f32         q4,   q2, q0
+	vmul.f32         q5,   q3, q0
+	vpadd.f32       d12,   d8, d9
+	vpadd.f32       d13,  d10, d11
+	vpadd.f32       d14,  d12, d13
+	vst1.64       {d14}, [r2]!
+	subs             r3,   r3, #1
+	bne          .neon_conv_loop4
+	vpop       {q4-q7}
+	pop             {r4, pc}
+	.size neon_conv_real4, .-neon_conv_real4
+	.align 2
+	.p2align 4,,15
+	.global neon_conv_real8
+	.type neon_conv_real8, %function
+neon_conv_real8:
+	push         {r4-r5, lr}
+	vpush        {q4-q7}
+	vld2.32     {q0-q1}, [r1]!
+	vld2.32     {q2-q3}, [r1]
+	add              r4, r0, #32
+	ldr              r5, =8
+.neon_conv_loop8:
+	vld2.32     {q4-q5}, [r0], r5
+	vld2.32     {q6-q7}, [r4], r5
+	vmul.f32         q8,   q4, q0
+	vmul.f32         q9,   q5, q0
+	vmul.f32        q10,   q6, q2
+	vmul.f32        q11,   q7, q2
+
+	vadd.f32        q12,   q8, q10
+	vadd.f32        q13,   q9, q11
+
+	vpadd.f32       d22,  d24, d25
+	vpadd.f32       d23,  d26, d27
+	vpadd.f32       d24,  d22, d23
+	vst1.64       {d24}, [r2]!
+	subs             r3,   r3, #1
+	bne          .neon_conv_loop8
+	vpop       {q4-q7}
+	pop          {r4-r5, pc}
+	.size neon_conv_real8, .-neon_conv_real8
+	.align 2
+	.global neon_conv_real12
+	.type neon_conv_real12, %function
+neon_conv_real12:
+	push         {r4-r6, lr}
+	vpush       {q4-q7}
+	vld2.32     {q0-q1}, [r1]!
+	vld2.32     {q2-q3}, [r1]!
+	vld2.32     {q4-q5}, [r1]!
+	add              r4, r0, #32
+	add              r5, r0, #64
+	ldr              r6, =8
+.neon_conv_loop12:
+	vld2.32     {q6-q7}, [r0], r6
+	vld2.32     {q8-q9}, [r4], r6
+	vld2.32   {q10-q11}, [r5], r6
+#ifdef HAVE_NEON_FMA
+	vfma.f32         q1,   q6, q0
+	vfma.f32         q3,   q7, q0
+	vfma.f32         q1,   q8, q2
+	vfma.f32         q3,   q9, q2
+	vfma.f32         q1,  q10, q4
+	vfma.f32         q3,  q11, q4
+#else
+	vmul.f32        q12,   q6, q0
+	vmul.f32        q13,   q7, q0
+	vmul.f32        q14,   q8, q2
+	vmul.f32        q15,   q9, q2
+	vmul.f32         q1,  q10, q4
+	vmul.f32         q3,  q11, q4
+
+	vadd.f32         q5,  q12, q14
+	vadd.f32         q6,  q13, q15
+	vadd.f32         q1,   q5, q1
+	vadd.f32         q3,   q6, q3
+#endif
+	vpadd.f32        d2,   d2, d3
+	vpadd.f32        d3,   d6, d7
+	vpadd.f32        d6,   d2, d3
+	vst1.64        {d6}, [r2]!
+	subs             r3,   r3, #1
+	bne          .neon_conv_loop12
+	vpop         {q4-q7}
+	pop          {r4-r6, pc}
+	.size neon_conv_real12, .-neon_conv_real12
+	.align 2
+	.global neon_conv_real16
+	.type neon_conv_real16, %function
+neon_conv_real16:
+	push         {r4-r7, lr}
+	vpush        {q4-q7}
+	vld2.32     {q0-q1}, [r1]!
+	vld2.32     {q2-q3}, [r1]!
+	vld2.32     {q4-q5}, [r1]!
+	vld2.32     {q6-q7}, [r1]
+	add              r4, r0, #32
+	add              r5, r0, #64
+	add              r6, r0, #96
+	ldr              r7, =8
+.neon_conv_loop16:
+	vld2.32     {q8-q9}, [r0], r7
+	vld2.32   {q10-q11}, [r4], r7
+	vld2.32   {q12-q13}, [r5], r7
+	vld2.32   {q14-q15}, [r6], r7
+#ifdef HAVE_NEON_FMA
+	vmul.f32         q1,   q8, q0
+	vmul.f32         q3,   q9, q0
+	vfma.f32         q1,  q10, q2
+	vfma.f32         q3,  q11, q2
+	vfma.f32         q1,  q12, q4
+	vfma.f32         q3,  q13, q4
+	vfma.f32         q1,  q14, q6
+	vfma.f32         q3,  q15, q6
+#else
+	vmul.f32         q1,   q8, q0
+	vmul.f32         q3,   q9, q0
+	vmul.f32         q5,  q10, q2
+	vmul.f32         q7,  q11, q2
+	vmul.f32         q8,  q12, q4
+	vmul.f32         q9,  q13, q4
+	vmul.f32        q10,  q14, q6
+	vmul.f32        q11,  q15, q6
+
+	vadd.f32         q1,   q1, q5
+	vadd.f32         q3,   q3, q7
+	vadd.f32         q5,   q8, q10
+	vadd.f32         q7,   q9, q11
+	vadd.f32         q1,   q1, q5
+	vadd.f32         q3,   q3, q7
+#endif
+	vpadd.f32        d2,   d2, d3
+	vpadd.f32        d3,   d6, d7
+	vpadd.f32        d6,   d2, d3
+	vst1.64        {d6}, [r2]!
+	subs             r3,   r3, #1
+	bne          .neon_conv_loop16
+	vpop       {q4-q7}
+	pop          {r4-r7, pc}
+	.size neon_conv_real16, .-neon_conv_real16
+	.align 2
+	.global neon_conv_real20
+	.type neon_conv_real20, %function
+neon_conv_real20:
+	push         {r4-r8, lr}
+	vpush        {q4-q7}
+	vld2.32     {q0-q1}, [r1]!
+	vld2.32     {q2-q3}, [r1]!
+	vld2.32     {q4-q5}, [r1]!
+	vld2.32     {q6-q7}, [r1]!
+	vld2.32     {q8-q9}, [r1]
+	add              r4, r0, #32
+	add              r5, r0, #64
+	add              r6, r0, #96
+	add              r7, r0, #128
+	ldr              r8, =8
+.neon_conv_loop20:
+	vld2.32   {q10-q11}, [r0], r8
+	vld2.32   {q12-q13}, [r4], r8
+	vld2.32   {q14-q15}, [r5], r8
+#ifdef HAVE_NEON_FMA
+	vmul.f32         q1,  q10, q0
+	vfma.f32         q1,  q12, q2
+	vfma.f32         q1,  q14, q4
+	vmul.f32         q3,  q11, q0
+	vfma.f32         q3,  q13, q2
+	vfma.f32         q3,  q15, q4
+
+	vld2.32   {q12-q13}, [r6], r8
+	vld2.32   {q14-q15}, [r7], r8
+
+	vfma.f32         q1,  q12, q6
+	vfma.f32         q3,  q13, q6
+	vfma.f32         q1,  q14, q8
+	vfma.f32         q3,  q15, q8
+#else
+	vmul.f32         q1,  q10, q0
+	vmul.f32         q3,  q12, q2
+	vmul.f32         q5,  q14, q4
+	vmul.f32         q7,  q11, q0
+	vmul.f32         q9,  q13, q2
+	vmul.f32        q10,  q15, q4
+	vadd.f32         q1,   q1, q3
+	vadd.f32         q3,   q7, q9
+	vadd.f32         q9,   q1, q5
+	vadd.f32        q10,   q3, q10
+
+	vld2.32   {q12-q13}, [r6], r8
+	vld2.32   {q14-q15}, [r7], r8
+
+	vmul.f32         q1,  q12, q6
+	vmul.f32         q3,  q13, q6
+	vmul.f32         q5,  q14, q8
+	vmul.f32         q7,  q15, q8
+	vadd.f32        q12,   q1, q9
+	vadd.f32        q14,   q3, q10
+	vadd.f32         q1,  q12, q5
+	vadd.f32         q3,  q14, q7
+#endif
+	vpadd.f32        d2,   d2, d3
+	vpadd.f32        d3,   d6, d7
+	vpadd.f32        d6,   d2, d3
+	vst1.64        {d6}, [r2]!
+	subs             r3,   r3, #1
+	bne          .neon_conv_loop20
+	vpop       {q4-q7}
+	pop          {r4-r8, pc}
+	.size neon_conv_real20, .-neon_conv_real20
+	.align 2
+	.global mac_cx_neon4
+	.type mac_cx_neon4, %function
+mac_cx_neon4:
+	push           {r4, lr}
+	ldr             r4, =32
+	veor           q14, q14
+	veor           q15, q15
+.neon_conv_loop_mac4:
+	vld2.32     {q0-q1}, [r0], r4
+	vld2.32     {q2-q3}, [r1]!
+
+	vmul.f32       q10,  q0, q2
+	vmul.f32       q11,  q1, q3
+	vmul.f32       q12,  q0, q3
+	vmul.f32       q13,  q2, q1
+	vsub.f32        q8, q10, q11
+	vadd.f32        q9, q12, q13
+
+	vadd.f32        q14, q8
+	vadd.f32        q15, q9
+	subs             r3, #1
+	bne       .neon_conv_loop_mac4
+
+	vld1.64          d0, [r2]
+	vpadd.f32       d28, d28, d29
+	vpadd.f32       d30, d30, d31
+	vpadd.f32        d1, d28, d30
+	vadd.f32         d1, d0
+	vst1.64          d1, [r2]
+        pop             {r4, pc}
+	.size mac_cx_neon4, .-mac_cx_neon4
+	.section .note.GNU-stack,"",%progbits

Transceiver52M/arm/mult.c

@@ -0,0 +1,56 @@
+/*
+ * NEON scaling
+ * Copyright (C) 2012,2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include <mult.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+void neon_cmplx_mul_4n(float *, float *, float *, int);
+
+static void cmplx_mul_ps(float *out, float *a, float *b, int len)
+{
+	float ai, aq, bi, bq;
+
+	for (int i = 0; i < len; i++) {
+		ai = a[2 * i + 0];
+		aq = a[2 * i + 1];
+
+		bi = b[2 * i + 0];
+		bq = b[2 * i + 1];
+
+		out[2 * i + 0] = ai * bi - aq * bq;
+		out[2 * i + 1] = ai * bq + aq * bi;
+	}
+}
+
+void mul_complex(float *out, float *a, float *b, int len)
+{
+#ifdef HAVE_NEON
+	if (len % 4)
+		cmplx_mul_ps(out, a, b, len);
+	else
+		neon_cmplx_mul_4n(out, a, b, len >> 2);
+#else
+	cmplx_mul_ps(out, a, b, len);
+#endif
+}

Transceiver52M/arm/mult_neon.S

@@ -0,0 +1,42 @@
+/*
+ * NEON complex multiplication 
+ * Copyright (C) 2012,2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+	.syntax unified
+	.text
+	.align 2
+	.global neon_cmplx_mul_4n
+	.type neon_cmplx_mul_4n, %function
+neon_cmplx_mul_4n:
+	vpush       {q4-q7}
+.loop_mul:
+	vld2.32     {q0-q1}, [r1]!
+	vld2.32     {q2-q3}, [r2]!
+	vmul.f32         q4, q0, q2
+	vmul.f32         q5, q1, q3
+	vmul.f32         q6, q0, q3
+	vmul.f32         q7, q2, q1
+	vsub.f32         q8, q4, q5
+	vadd.f32         q9, q6, q7
+	vst2.32     {q8-q9}, [r0]!
+	subs             r3, #1
+	bne       .loop_mul
+	vpop       {q4-q7}
+	bx               lr
+	.size neon_cmplx_mul_4n, .-neon_cmplx_mul_4n
+	.section .note.GNU-stack,"",%progbits

Transceiver52M/arm/scale.c

@@ -0,0 +1,56 @@
+/*
+ * NEON scaling
+ * Copyright (C) 2012,2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include <scale.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+void neon_scale_4n(float *, float *, float *, int);
+
+static void scale_ps(float *out, float *in, float *scale, int len)
+{
+	float ai, aq, bi, bq;
+
+	bi = scale[0];
+	bq = scale[1];
+
+	for (int i = 0; i < len; i++) {
+		ai = in[2 * i + 0];
+		aq = in[2 * i + 1];
+
+		out[2 * i + 0] = ai * bi - aq * bq;
+		out[2 * i + 1] = ai * bq + aq * bi;
+	}
+}
+
+void scale_complex(float *out, float *in, float* scale, int len)
+{
+#ifdef HAVE_NEON
+	if (len % 4)
+		scale_ps(out, in, scale, len);
+	else
+		neon_scale_4n(in, scale, out, len >> 2);
+#else
+	scale_ps(out, in, scale, len);
+#endif
+}

Transceiver52M/arm/scale_neon.S

@@ -0,0 +1,50 @@
+/*
+ * ARM NEON Scaling
+ * Copyright (C) 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+	.syntax unified
+	.text
+	.align 2
+	.global neon_scale_4n
+	.type neon_scale_4n, %function
+neon_scale_4n:
+	push            {r4, lr}
+	ldr              r4, =32
+
+	vld1.64          d0, [r1]
+	vmov.32          s4, s1
+	vmov.32          s1, s0
+	vmov.64          d1, d0
+	vmov.32          s5, s4
+	vmov.64          d3, d2
+.loop_mul_const:
+	vld2.32     {q2-q3}, [r0], r4
+
+	vmul.f32         q8, q0,  q2
+	vmul.f32         q9, q1,  q3
+	vmul.f32        q10, q0,  q3
+	vmul.f32        q11, q1,  q2
+	vsub.f32         q8, q8,  q9
+	vadd.f32         q9, q10, q11
+
+	vst2.32     {q8-q9}, [r2]!
+	subs             r3, #1
+	bne              .loop_mul_const
+	pop             {r4, pc}
+	.size neon_scale_4n, .-neon_scale_4n
+	.section .note.GNU-stack,"",%progbits

Transceiver52M/common/convert.h

@@ -0,0 +1,7 @@
+#ifndef _CONVERT_H_
+#define _CONVERT_H_
+
+void convert_float_short(short *out, const float *in, float scale, int len);
+void convert_short_float(float *out, const short *in, int len);
+
+#endif /* _CONVERT_H_ */

Transceiver52M/common/convolve.h

@@ -0,0 +1,30 @@
+#ifndef _CONVOLVE_H_
+#define _CONVOLVE_H_
+
+void *convolve_h_alloc(int num);
+
+int convolve_real(const float *x, int x_len,
+		  const float *h, int h_len,
+		  float *y, int y_len,
+		  int start, int len,
+		  int step, int offset);
+
+int convolve_complex(const float *x, int x_len,
+		     const float *h, int h_len,
+		     float *y, int y_len,
+		     int start, int len,
+		     int step, int offset);
+
+int base_convolve_real(const float *x, int x_len,
+		       const float *h, int h_len,
+		       float *y, int y_len,
+		       int start, int len,
+		       int step, int offset);
+
+int base_convolve_complex(const float *x, int x_len,
+			  const float *h, int h_len,
+			  float *y, int y_len,
+			  int start, int len,
+			  int step, int offset);
+
+#endif /* _CONVOLVE_H_ */

Transceiver52M/common/convolve_base.c

@@ -0,0 +1,156 @@
+/*
+ * Convolution
+ * Copyright (C) 2012, 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include <stdio.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Base multiply and accumulate complex-real */
+static void mac_real(const float *x, const float *h, float *y)
+{
+	y[0] += x[0] * h[0];
+	y[1] += x[1] * h[0];
+}
+
+/* Base multiply and accumulate complex-complex */
+static void mac_cmplx(const float *x, const float *h, float *y)
+{
+	y[0] += x[0] * h[0] - x[1] * h[1];
+	y[1] += x[0] * h[1] + x[1] * h[0];
+}
+
+/* Base vector complex-complex multiply and accumulate */
+static void mac_real_vec_n(const float *x, const float *h, float *y,
+			   int len, int step, int offset)
+{
+	for (int i = offset; i < len; i += step)
+		mac_real(&x[2 * i], &h[2 * i], y);
+}
+
+/* Base vector complex-complex multiply and accumulate */
+static void mac_cmplx_vec_n(const float *x, const float *h, float *y,
+			    int len, int step, int offset)
+{
+	for (int i = offset; i < len; i += step)
+		mac_cmplx(&x[2 * i], &h[2 * i], y);
+}
+
+/* Base complex-real convolution */
+int _base_convolve_real(const float *x, int x_len,
+			const float *h, int h_len,
+			float *y, int y_len,
+			int start, int len,
+			int step, int offset)
+{
+	for (int i = 0; i < len; i++) {
+		mac_real_vec_n(&x[2 * (i - (h_len - 1) + start)],
+			       h,
+			       &y[2 * i], h_len,
+			       step, offset);
+	}
+
+	return len;
+}
+
+/* Base complex-complex convolution */
+int _base_convolve_complex(const float *x, int x_len,
+			   const float *h, int h_len,
+			   float *y, int y_len,
+			   int start, int len,
+			   int step, int offset)
+{
+	for (int i = 0; i < len; i++) {
+		mac_cmplx_vec_n(&x[2 * (i - (h_len - 1) + start)],
+				h,
+				&y[2 * i],
+				h_len, step, offset);
+	}
+
+	return len;
+}
+
+/* Buffer validity checks */
+int bounds_check(int x_len, int h_len, int y_len,
+		 int start, int len, int step)
+{
+	if ((x_len < 1) || (h_len < 1) ||
+	    (y_len < 1) || (len < 1) || (step < 1)) {
+		fprintf(stderr, "Convolve: Invalid input\n");
+		return -1;
+	}
+
+	if ((start + len > x_len) || (len > y_len) || (x_len < h_len)) {
+		fprintf(stderr, "Convolve: Boundary exception\n");
+		fprintf(stderr, "start: %i, len: %i, x: %i, h: %i, y: %i\n",
+				start, len, x_len, h_len, y_len);
+		return -1;
+	}
+
+	return 0;
+}
+
+/* API: Non-aligned (no SSE) complex-real */
+int base_convolve_real(const float *x, int x_len,
+		       const float *h, int h_len,
+		       float *y, int y_len,
+		       int start, int len,
+		       int step, int offset)
+{
+	if (bounds_check(x_len, h_len, y_len, start, len, step) < 0)
+		return -1;
+
+	memset(y, 0, len * 2 * sizeof(float));
+
+	return _base_convolve_real(x, x_len,
+				   h, h_len,
+				   y, y_len,
+				   start, len, step, offset);
+}
+
+/* API: Non-aligned (no SSE) complex-complex */
+int base_convolve_complex(const float *x, int x_len,
+			  const float *h, int h_len,
+			  float *y, int y_len,
+			  int start, int len,
+			  int step, int offset)
+{
+	if (bounds_check(x_len, h_len, y_len, start, len, step) < 0)
+		return -1;
+
+	memset(y, 0, len * 2 * sizeof(float));
+
+	return _base_convolve_complex(x, x_len,
+				      h, h_len,
+				      y, y_len,
+				      start, len, step, offset);
+}
+
+/* Aligned filter tap allocation */
+void *convolve_h_alloc(int len)
+{
+#ifdef HAVE_SSE3
+	return memalign(16, len * 2 * sizeof(float));
+#else
+	return malloc(len * 2 * sizeof(float));
+#endif
+}

Transceiver52M/common/mult.h

@@ -0,0 +1,6 @@
+#ifndef _MULT_H_
+#define _MULT_H_
+
+void mul_complex(float *out, float *a, float *b, int len);
+
+#endif /* _MULT_H_ */

Transceiver52M/common/scale.h

@@ -0,0 +1,6 @@
+#ifndef _SCALE_H_
+#define _SCALE_H_
+
+void scale_complex(float *out, float *in, float *scale, int len);
+
+#endif /* _SCALE_H_ */

Transceiver52M/laurent.m

@@ -0,0 +1,83 @@
+%
+% Laurent decomposition of GMSK signals
+% Generates C0, C1, and C2 pulse shapes
+%
+% Pierre Laurent, "Exact and Approximate Construction of Digital Phase
+%   Modulations by Superposition of Amplitude Modulated Pulses", IEEE
+%   Transactions of Communications, Vol. 34, No. 2, Feb 1986.
+%
+% Author: Thomas Tsou <tom@tsou.cc>
+%
+
+% Modulation parameters
+oversamp = 16;
+L = 3;
+f = 270.83333e3;
+T = 1/f;
+h = 0.5;
+BT = 0.30;
+B = BT / T;
+
+% Generate sampling points for L symbol periods
+t = -(L*T/2):T/oversamp:(L*T/2);
+t = t(1:end-1) + (T/oversamp/2);
+
+% Generate Gaussian pulse
+g = qfunc(2*pi*B*(t - T/2)/(log(2)^.5)) - qfunc(2*pi*B*(t + T/2)/(log(2)^.5));
+g = g / sum(g) * pi/2;
+g = [0 g];
+
+% Integrate phase 
+q = 0;
+for i = 1:size(g,2);
+    q(i) = sum(g(1:i));
+end
+
+% Compute two sided "generalized phase pulse" function
+s = 0;
+for i = 1:size(g,2);
+    s(i) = sin(q(i)) / sin(pi*h);
+end
+for i = (size(g,2) + 1):(2 * size(g,2) - 1);
+    s(i) = sin(pi*h - q(i - (size(g,2) - 1))) / sin(pi*h);
+end
+
+% Compute C0 pulse: valid for all L values
+c0 = s(1:end-(oversamp*(L-1)));
+for i = 1:L-1;
+    c0 = c0 .* s((1 + i*oversamp):end-(oversamp*(L - 1 - i)));
+end
+
+% Compute C1 pulse: valid for L = 3 only!
+%   C1 = S0 * S4 * S2
+c1 = s(1:end-(oversamp*(4)));
+c1 = c1 .* s((1 + 4*oversamp):end-(oversamp*(4 - 1 - 3)));
+c1 = c1 .* s((1 + 2*oversamp):end-(oversamp*(4 - 1 - 1)));
+
+% Compute C2 pulse: valid for L = 3 only!
+%   C2 = S0 * S1 * S5
+c2 = s(1:end-(oversamp*(5)));
+c2 = c2 .* s((1 + 1*oversamp):end-(oversamp*(5 - 1 - 0)));
+c2 = c2 .* s((1 + 5*oversamp):end-(oversamp*(5 - 1 - 4)));
+
+% Plot C0, C1, C2 Laurent pulse series
+figure(1);
+hold off;
+plot((0:size(c0,2)-1)/oversamp - 2,c0, 'b');
+hold on;
+plot((0:size(c1,2)-1)/oversamp - 2,c1, 'r');
+plot((0:size(c2,2)-1)/oversamp - 2,c2, 'g');
+
+% Generate OpenBTS pulse
+numSamples = size(c0,2); 
+centerPoint = (numSamples - 1)/2;
+i = ((0:numSamples) - centerPoint) / oversamp;
+xP = .96*exp(-1.1380*i.^2 - 0.527*i.^4);
+xP = xP / max(xP) * max(c0);
+
+% Plot C0 pulse compared to OpenBTS pulse
+figure(2);
+hold off;
+plot((0:size(c0,2)-1)/oversamp, c0, 'b');
+hold on;
+plot((0:size(xP,2)-1)/oversamp, xP, 'r');

Transceiver52M/multiTRX.cpp

@@ -1,120 +0,0 @@
-/*
- * Copyright 2012  Thomas Tsou <ttsou@vt.edu>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- * See the COPYING file in the main directory for details.
- */
-
-#include <time.h>
-#include <signal.h>
-
-#include <GSMCommon.h>
-#include <Logger.h>
-#include <Configuration.h>
-
-#include "Transceiver.h"
-#include "radioDevice.h"
-
-ConfigurationTable gConfig("/etc/OpenBTS/OpenBTS.db");
-
-volatile bool gbShutdown = false;
-
-int Transceiver::mTSC = -1;
-
-static void sigHandler(int signum)
-{
-	LOG(NOTICE) << "Received shutdown signal";
-	gbShutdown = true;
-}
-
-static int setupSignals()
-{
-	struct sigaction action;
-
-	action.sa_handler = sigHandler;
-	sigemptyset(&action.sa_mask);
-	action.sa_flags = 0;
-
-	if (sigaction(SIGINT, &action, NULL) < 0)
-		return -1;
-	if (sigaction(SIGTERM, &action, NULL) < 0)
-		return -1;
-
-	return 0;
-}
-
-int main(int argc, char *argv[])
-{
-	int numARFCN = 1;
-
-	if (argc > 1) {
-		numARFCN = atoi(argv[1]);
-		if (numARFCN > CHAN_MAX) {
-			LOG(ALERT) << numARFCN  << " channels not supported "
-						<< " with with current build";
-			exit(-1);
-		}
-	}
-
-	gLogInit("transceiver", gConfig.getStr("Log.Level").c_str(), LOG_LOCAL7);
-	srandom(time(NULL));
-
-	if (setupSignals() < 0) {
-		LOG(ERR) << "Failed to setup signal handlers, exiting...";
-		exit(-1);
-	}
-
-	RadioDevice *device = RadioDevice::make(SAMPSPERSYM);
-	int radioType = device->open("");
-	if (radioType < 0) {
-		LOG(ALERT) << "Failed to open device, exiting...";
-		return EXIT_FAILURE;
-	}
-
-	RadioInterface *radio;
-	switch (radioType) {
-	case RadioDevice::NORMAL:
-		radio = new RadioInterface(device, numARFCN);
-		break;
-	case RadioDevice::RESAMP:
-	default:
-		LOG(ALERT) << "Unsupported configuration";
-		return EXIT_FAILURE;
-	}
-
-	DriveLoop *drive = new DriveLoop(5700, "127.0.0.1", radio, numARFCN, 0);
-
-	Transceiver *trx[CHAN_MAX];
-	bool primary = true;
-	for (int i = 0; i < numARFCN; i++) {
-		trx[i] = new Transceiver(5700 + 2 * i, "127.0.0.1",
-					 drive, radio, SAMPSPERSYM,
-					 i, primary);
-		trx[i]->start();
-		primary = false;
-	}
-
-	while (!gbShutdown)
-		sleep(1);
-
-	LOG(NOTICE) << "Shutting down transceivers...";
-	for (int i = 0; i < numARFCN; i++)
-		trx[i]->shutdown();
-
-	for (int i = 0; i < numARFCN; i++)
-		delete trx[i];
-	delete drive;
-	delete radio;
-	delete device;
-}

Transceiver52M/osmo-trx.cpp

@@ -0,0 +1,495 @@
+/*
+ * Copyright (C) 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "Transceiver.h"
+#include "radioDevice.h"
+
+#include <time.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <GSMCommon.h>
+#include <Logger.h>
+#include <Configuration.h>
+
+/* Samples-per-symbol for downlink path
+ *     4 - Uses precision modulator (more computation, less distortion)
+ *     1 - Uses minimized modulator (less computation, more distortion)
+ *
+ *     Other values are invalid. Receive path (uplink) is always
+ *     downsampled to 1 sps. Default to 4 sps for all cases except for
+ *     ARM and non-SIMD enabled architectures.
+ */
+#if defined(HAVE_NEON) || !defined(HAVE_SSE3)
+#define DEFAULT_TX_SPS		1
+#else
+#define DEFAULT_TX_SPS		4
+#endif
+
+/*
+ * Samples-per-symbol for uplink (receiver) path
+ *     Do not modify this value. EDGE configures 4 sps automatically on
+ *     B200/B210 devices only. Use of 4 sps on the receive path for other
+ *     configurations is not supported.
+ */
+#define DEFAULT_RX_SPS		1
+
+/* Default configuration parameters
+ *     Note that these values are only used if the particular key does not
+ *     exist in the configuration database. IP port and address values will
+ *     typically be overwritten by the OpenBTS.db values. Other values will
+ *     not be in the database by default.
+ */
+#define DEFAULT_TRX_PORT	5700
+#define DEFAULT_TRX_IP		"127.0.0.1"
+#define DEFAULT_EXTREF		false
+#define DEFAULT_DIVERSITY	false
+#define DEFAULT_CHANS		1
+
+struct trx_config {
+	std::string log_level;
+	std::string addr;
+	std::string dev_args;
+	unsigned port;
+	unsigned tx_sps;
+	unsigned rx_sps;
+	unsigned chans;
+	unsigned rtsc;
+	unsigned rach_delay;
+	bool extref;
+	Transceiver::FillerType filler;
+	bool diversity;
+	double offset;
+	double rssi_offset;
+	bool swap_channels;
+	bool edge;
+};
+
+ConfigurationTable gConfig;
+
+volatile bool gshutdown = false;
+
+/* Run sanity check on configuration table
+ *     The global table constructor cannot provide notification in the
+ *     event of failure. Make sure that we can access the database,
+ *     write to it, and that it contains the bare minimum required keys.
+ */
+bool testConfig()
+{
+	int val = 9999;
+	std::string test = "asldfkjsaldkf";
+	const char *key = "Log.Level";
+
+	/* Attempt to query */
+	try {
+		gConfig.getStr(key);
+	} catch (...) {
+		std::cerr << std::endl;
+		std::cerr << "Config: Failed query required key " << key
+			  << std::endl;
+		return false;
+	}
+
+	/* Attempt to set a test value in the global config */
+	if (!gConfig.set(test, val)) {
+		std::cerr << std::endl;
+		std::cerr << "Config: Failed to set test key" << std::endl;
+		return false;
+	} else {
+		gConfig.remove(test);
+	}
+
+	return true;
+}
+
+
+/* Setup configuration values
+ *     Don't query the existence of the Log.Level because it's a
+ *     mandatory value. That is, if it doesn't exist, the configuration
+ *     table will crash or will have already crashed. Everything else we
+ *     can survive without and use default values if the database entries
+ *     are empty.
+ */
+bool trx_setup_config(struct trx_config *config)
+{
+	std::string refstr, fillstr, divstr, edgestr;
+
+	if (!testConfig())
+		return false;
+
+	if (config->log_level == "")
+		config->log_level = gConfig.getStr("Log.Level");
+
+	if (!config->port) {
+		if (gConfig.defines("TRX.Port"))
+			config->port = gConfig.getNum("TRX.Port");
+		else
+			config->port = DEFAULT_TRX_PORT;
+	}
+
+	if (config->addr == "") {
+		if (gConfig.defines("TRX.IP"))
+			config->addr = gConfig.getStr("TRX.IP");
+		else
+			config->addr = DEFAULT_TRX_IP;
+	}
+
+	if (!config->extref) {
+		if (gConfig.defines("TRX.Reference"))
+			config->extref = gConfig.getNum("TRX.Reference");
+		else
+			config->extref = DEFAULT_EXTREF;
+	}
+
+	if (!config->diversity) {
+		if (gConfig.defines("TRX.Diversity"))
+			config->diversity = gConfig.getNum("TRX.Diversity");
+		else
+			config->diversity = DEFAULT_DIVERSITY;
+	}
+
+	/* Diversity only supported on 2 channels */
+	if (config->diversity)
+		config->chans = 2;
+
+	edgestr = config->edge ? "Enabled" : "Disabled";
+	refstr = config->extref ? "Enabled" : "Disabled";
+	divstr = config->diversity ? "Enabled" : "Disabled";
+	switch (config->filler) {
+	case Transceiver::FILLER_DUMMY:
+		fillstr = "Dummy bursts";
+		break;
+	case Transceiver::FILLER_ZERO:
+		fillstr = "Disabled";
+		break;
+	case Transceiver::FILLER_NORM_RAND:
+		fillstr = "Normal busrts with random payload";
+		break;
+	case Transceiver::FILLER_EDGE_RAND:
+		fillstr = "EDGE busrts with random payload";
+		break;
+	case Transceiver::FILLER_ACCESS_RAND:
+		fillstr = "Access busrts with random payload";
+		break;
+	}
+
+	std::ostringstream ost("");
+	ost << "Config Settings" << std::endl;
+	ost << "   Log Level............... " << config->log_level << std::endl;
+	ost << "   Device args............. " << config->dev_args << std::endl;
+	ost << "   TRX Base Port........... " << config->port << std::endl;
+	ost << "   TRX Address............. " << config->addr << std::endl;
+	ost << "   Channels................ " << config->chans << std::endl;
+	ost << "   Tx Samples-per-Symbol... " << config->tx_sps << std::endl;
+	ost << "   Rx Samples-per-Symbol... " << config->rx_sps << std::endl;
+	ost << "   EDGE support............ " << edgestr << std::endl;
+	ost << "   External Reference...... " << refstr << std::endl;
+	ost << "   C0 Filler Table......... " << fillstr << std::endl;
+	ost << "   Diversity............... " << divstr << std::endl;
+	ost << "   Tuning offset........... " << config->offset << std::endl;
+	ost << "   RSSI to dBm offset...... " << config->rssi_offset << std::endl;
+	ost << "   Swap channels........... " << config->swap_channels << std::endl;
+	std::cout << ost << std::endl;
+
+	return true;
+}
+
+/* Create radio interface
+ *     The interface consists of sample rate changes, frequency shifts,
+ *     channel multiplexing, and other conversions. The transceiver core
+ *     accepts input vectors sampled at multiples of the GSM symbol rate.
+ *     The radio interface connects the main transceiver with the device
+ *     object, which may be operating some other rate.
+ */
+RadioInterface *makeRadioInterface(struct trx_config *config,
+                                   RadioDevice *usrp, int type)
+{
+	RadioInterface *radio = NULL;
+
+	if ((config->rx_sps != 1) && (type != RadioDevice::NORMAL)) {
+		LOG(ALERT) << "Unsupported radio interface configuration";
+	}
+
+	switch (type) {
+	case RadioDevice::NORMAL:
+		radio = new RadioInterface(usrp, config->tx_sps,
+					   config->rx_sps, config->chans);
+		break;
+	case RadioDevice::RESAMP_64M:
+	case RadioDevice::RESAMP_100M:
+		radio = new RadioInterfaceResamp(usrp, config->tx_sps,
+						 config->chans);
+		break;
+	case RadioDevice::DIVERSITY:
+		radio = new RadioInterfaceDiversity(usrp, config->tx_sps,
+						    config->chans);
+		break;
+	default:
+		LOG(ALERT) << "Unsupported radio interface configuration";
+		return NULL;
+	}
+
+	if (!radio->init(type)) {
+		LOG(ALERT) << "Failed to initialize radio interface";
+		return NULL;
+	}
+
+	return radio;
+}
+
+/* Create transceiver core
+ *     The multi-threaded modem core operates at multiples of the GSM rate of
+ *     270.8333 ksps and consists of GSM specific modulation, demodulation,
+ *     and decoding schemes. Also included are the socket interfaces for
+ *     connecting to the upper layer stack.
+ */
+Transceiver *makeTransceiver(struct trx_config *config, RadioInterface *radio)
+{
+	Transceiver *trx;
+	VectorFIFO *fifo;
+
+	trx = new Transceiver(config->port, config->addr.c_str(),
+			      config->tx_sps, config->rx_sps, config->chans,
+			      GSM::Time(3,0), radio, config->rssi_offset);
+	if (!trx->init(config->filler, config->rtsc, config->rach_delay)) {
+		LOG(ALERT) << "Failed to initialize transceiver";
+		delete trx;
+		return NULL;
+	}
+
+	for (size_t i = 0; i < config->chans; i++) {
+		fifo = radio->receiveFIFO(i);
+		if (fifo && trx->receiveFIFO(fifo, i))
+			continue;
+
+		LOG(ALERT) << "Could not attach FIFO to channel " << i;
+		delete trx;
+		return NULL;
+	}
+
+	return trx;
+}
+
+static void sig_handler(int signo)
+{
+	fprintf(stdout, "Received shutdown signal");
+	gshutdown = true;
+}
+
+static void setup_signal_handlers()
+{
+	if (signal(SIGINT, sig_handler) == SIG_ERR) {
+		fprintf(stderr, "Failed to install SIGINT signal handler\n");
+		exit(EXIT_FAILURE);
+	}
+	if (signal(SIGTERM, sig_handler) == SIG_ERR) {
+		fprintf(stderr, "Couldn't install SIGTERM signal handler\n");
+		exit( EXIT_FAILURE);
+	}
+}
+
+static void print_help()
+{
+	fprintf(stdout, "Options:\n"
+		"  -h    This text\n"
+		"  -a    UHD device args\n"
+		"  -l    Logging level (%s)\n"
+		"  -i    IP address of GSM core\n"
+		"  -p    Base port number\n"
+		"  -e    Enable EDGE receiver\n"
+		"  -d    Enable dual channel diversity receiver\n"
+		"  -x    Enable external 10 MHz reference\n"
+		"  -s    Samples-per-symbol (1 or 4)\n"
+		"  -c    Number of ARFCN channels (default=1)\n"
+		"  -f    Enable C0 filler table\n"
+		"  -o    Set baseband frequency offset (default=auto)\n"
+		"  -r    Random Normal Burst test mode with TSC\n"
+		"  -A    Random Access Burst test mode with delay\n"
+		"  -R    RSSI to dBm offset in dB (default=0)\n"
+		"  -S    Swap channels (UmTRX only)\n",
+		"EMERG, ALERT, CRT, ERR, WARNING, NOTICE, INFO, DEBUG");
+}
+
+static void handle_options(int argc, char **argv, struct trx_config *config)
+{
+	int option;
+
+	config->port = 0;
+	config->tx_sps = DEFAULT_TX_SPS;
+	config->rx_sps = DEFAULT_RX_SPS;
+	config->chans = DEFAULT_CHANS;
+	config->rtsc = 0;
+	config->rach_delay = 0;
+	config->extref = false;
+	config->filler = Transceiver::FILLER_ZERO;
+	config->diversity = false;
+	config->offset = 0.0;
+	config->rssi_offset = 0.0;
+	config->swap_channels = false;
+	config->edge = false;
+
+	while ((option = getopt(argc, argv, "ha:l:i:p:c:dxfo:s:r:A:R:Se")) != -1) {
+		switch (option) {
+		case 'h':
+			print_help();
+			exit(0);
+			break;
+		case 'a':
+			config->dev_args = optarg;
+			break;
+		case 'l':
+			config->log_level = optarg;
+			break;
+		case 'i':
+			config->addr = optarg;
+			break;
+		case 'p':
+			config->port = atoi(optarg);
+			break;
+		case 'c':
+			config->chans = atoi(optarg);
+			break;
+		case 'd':
+			config->diversity = true;
+			break;
+		case 'x':
+			config->extref = true;
+			break;
+		case 'f':
+			config->filler = Transceiver::FILLER_DUMMY;
+			break;
+		case 'o':
+			config->offset = atof(optarg);
+			break;
+		case 's':
+			config->tx_sps = atoi(optarg);
+			break;
+		case 'r':
+			config->rtsc = atoi(optarg);
+			config->filler = Transceiver::FILLER_NORM_RAND;
+			break;
+		case 'A':
+			config->rach_delay = atoi(optarg);
+			config->filler = Transceiver::FILLER_ACCESS_RAND;
+			break;
+		case 'R':
+			config->rssi_offset = atof(optarg);
+			break;
+		case 'S':
+			config->swap_channels = true;
+			break;
+		case 'e':
+			config->edge = true;
+			config->rx_sps = 4;
+			break;
+		default:
+			print_help();
+			exit(0);
+		}
+	}
+
+	if (config->edge && (config->filler == Transceiver::FILLER_NORM_RAND))
+		config->filler = Transceiver::FILLER_EDGE_RAND;
+
+	if ((config->tx_sps != 1) && (config->tx_sps != 4)) {
+		printf("Unsupported samples-per-symbol %i\n\n", config->tx_sps);
+		print_help();
+		exit(0);
+	}
+
+	if (config->edge && (config->tx_sps != 4)) {
+		printf("EDGE only supported at 4 samples per symbol\n\n");
+		print_help();
+		exit(0);
+	}
+
+	if (config->rtsc > 7) {
+		printf("Invalid training sequence %i\n\n", config->rtsc);
+		print_help();
+		exit(0);
+	}
+
+	if (config->rach_delay > 68) {
+		printf("RACH delay is too big %i\n\n", config->rach_delay);
+		print_help();
+		exit(0);
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	int type, chans;
+	RadioDevice *usrp;
+	RadioInterface *radio = NULL;
+	Transceiver *trx = NULL;
+	struct trx_config config;
+
+	handle_options(argc, argv, &config);
+
+	setup_signal_handlers();
+
+	/* Check database sanity */
+	if (!trx_setup_config(&config)) {
+		std::cerr << "Config: Database failure - exiting" << std::endl;
+		return EXIT_FAILURE;
+	}
+
+	gLogInit("transceiver", config.log_level.c_str(), LOG_LOCAL7);
+
+	srandom(time(NULL));
+
+	/* Create the low level device object */
+	usrp = RadioDevice::make(config.tx_sps, config.rx_sps, config.chans,
+				 config.diversity, config.offset);
+	type = usrp->open(config.dev_args, config.extref, config.swap_channels);
+	if (type < 0) {
+		LOG(ALERT) << "Failed to create radio device" << std::endl;
+		goto shutdown;
+	}
+
+	/* Setup the appropriate device interface */
+	radio = makeRadioInterface(&config, usrp, type);
+	if (!radio)
+		goto shutdown;
+
+	/* Create the transceiver core */
+	trx = makeTransceiver(&config, radio);
+	if (!trx)
+		goto shutdown;
+
+	chans = trx->numChans();
+	std::cout << "-- Transceiver active with "
+		  << chans << " channel(s)" << std::endl;
+
+	while (!gshutdown)
+		sleep(1);
+
+shutdown:
+	std::cout << "Shutting down transceiver..." << std::endl;
+
+	delete trx;
+	delete radio;
+	delete usrp;
+
+	return 0;
+}

Transceiver52M/radioClock.cpp

@@ -23,32 +23,27 @@
 
 void RadioClock::set(const GSM::Time& wTime)
 {
-	mLock.lock();
+	ScopedLock lock(mLock);
 	mClock = wTime;
 	updateSignal.signal();
-	mLock.unlock();
 }
 
 void RadioClock::incTN()
 {
-	mLock.lock();
+	ScopedLock lock(mLock);
 	mClock.incTN();
 	updateSignal.signal();
-	mLock.unlock();
 }
 
 GSM::Time RadioClock::get()
 {
-	mLock.lock();
+	ScopedLock lock(mLock);
 	GSM::Time retVal = mClock;
-	mLock.unlock();
-
 	return retVal;
 }
 
 void RadioClock::wait()
 {
-	mLock.lock();
+	ScopedLock lock(mLock);
 	updateSignal.wait(mLock,1);
-	mLock.unlock();
 }

Transceiver52M/radioDevice.h

@@ -16,6 +16,7 @@
 #define __RADIO_DEVICE_H__
 
 #include <string>
+#include <vector>
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -34,14 +35,15 @@ class RadioDevice {
   enum TxWindowType { TX_WINDOW_USRP1, TX_WINDOW_FIXED };
 
   /* Radio interface types */
-  enum RadioInterfaceType { NORMAL, RESAMP };
+  enum RadioInterfaceType { NORMAL, RESAMP_64M, RESAMP_100M, DIVERSITY };
 
-  static RadioDevice *make(int sps, bool skipRx = false);
-
-  virtual ~RadioDevice() {};
+  static RadioDevice *make(size_t tx_sps, size_t rx_sps = 1, size_t chans = 1,
+                           bool diversity = false, double offset = 0.0);
 
   /** Initialize the USRP */
-  virtual int open(const std::string &args)=0;
+  virtual int open(const std::string &args = "", bool extref = false, bool swap_channels = false)=0;
+
+  virtual ~RadioDevice() { }
 
   /** Start the USRP */
   virtual bool start()=0;
@@ -53,7 +55,7 @@ class RadioDevice {
   virtual enum TxWindowType getWindowType()=0;
 
   /** Enable thread priority */
-  virtual void setPriority()=0;
+  virtual void setPriority(float prio = 0.5) = 0;
 
   /**
 	Read samples from the radio.
@@ -65,9 +67,9 @@ class RadioDevice {
 	@param RSSI The received signal strength of the read result
 	@return The number of samples actually read
   */
-  virtual int readSamples(short **buf, int chans, int len, TIMESTAMP timestamp,
-                          bool *overrun = NULL, bool *underrun = NULL,
-                          unsigned *RSSI = NULL)=0;
+  virtual int readSamples(std::vector<short *> &bufs, int len, bool *overrun,
+                          TIMESTAMP timestamp = 0xffffffff, bool *underrun = 0,
+                          unsigned *RSSI = 0) = 0;
   /**
         Write samples to the radio.
         @param buf Contains the data to be written.
@@ -77,17 +79,17 @@ class RadioDevice {
         @param isControl Set if data is a control packet, e.g. a ping command
         @return The number of samples actually written
   */
-  virtual int writeSamples(short **buf, int chans, int len, TIMESTAMP timestamp,
-                           bool *underrun = NULL, bool isControl = false)=0;
- 
+  virtual int writeSamples(std::vector<short *> &bufs, int len, bool *underrun,
+                           TIMESTAMP timestamp, bool isControl = false) = 0;
+
   /** Update the alignment between the read and write timestamps */
   virtual bool updateAlignment(TIMESTAMP timestamp)=0;
-  
+
   /** Set the transmitter frequency */
-  virtual bool setTxFreq(double wFreq, int chan = 0)=0;
+  virtual bool setTxFreq(double wFreq, size_t chan = 0) = 0;
 
   /** Set the receiver frequency */
-  virtual bool setRxFreq(double wFreq, int chan = 0)=0;
+  virtual bool setRxFreq(double wFreq, size_t chan = 0) = 0;
 
   /** Returns the starting write Timestamp*/
   virtual TIMESTAMP initialWriteTimestamp(void)=0;
@@ -102,10 +104,10 @@ class RadioDevice {
   virtual double fullScaleOutputValue()=0;
 
   /** sets the receive chan gain, returns the gain setting **/
-  virtual double setRxGain(double dB, int chan = 0)=0;
+  virtual double setRxGain(double dB, size_t chan = 0) = 0;
 
   /** gets the current receive gain **/
-  virtual double getRxGain(int chan = 0)=0;
+  virtual double getRxGain(size_t chan = 0) = 0;
 
   /** return maximum Rx Gain **/
   virtual double maxRxGain(void) = 0;
@@ -114,7 +116,7 @@ class RadioDevice {
   virtual double minRxGain(void) = 0;
 
   /** sets the transmit chan gain, returns the gain setting **/
-  virtual double setTxGain(double dB, int chan = 0)=0;
+  virtual double setTxGain(double dB, size_t chan = 0) = 0;
 
   /** return maximum Tx Gain **/
   virtual double maxTxGain(void) = 0;
@@ -122,18 +124,13 @@ class RadioDevice {
   /** return minimum Tx Gain **/
   virtual double minTxGain(void) = 0;
 
-  /** set and return antennas selection **/
-  virtual void setTxAntenna(std::string &name) = 0;
-  virtual void setRxAntenna(std::string &name) = 0;
-  virtual std::string getRxAntenna() = 0;
-  virtual std::string getTxAntenna() = 0;
-
   /** Return internal status values */
-  virtual double getTxFreq(int chan = 0)=0;
-  virtual double getRxFreq(int chan = 0)=0;
+  virtual double getTxFreq(size_t chan = 0) = 0;
+  virtual double getRxFreq(size_t chan = 0) = 0;
   virtual double getSampleRate()=0;
   virtual double numberRead()=0;
   virtual double numberWritten()=0;
+
 };
 
 #endif

Transceiver52M/radioInterface.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright 2008, 2009, 2012 Free Software Foundation, Inc.
+* Copyright 2008, 2009 Free Software Foundation, Inc.
 *
 * This software is distributed under the terms of the GNU Affero Public License.
 * See the COPYING file in the main directory for details.
@@ -23,57 +23,79 @@
 */
 
 #include "radioInterface.h"
+#include "Resampler.h"
 #include <Logger.h>
 
-bool started = false;
-
-/* Device side buffers */
-static short *rx_buf[CHAN_MAX];
-static short *tx_buf[CHAN_MAX];
-
-/* Complex float to short conversion */
-static void floatToShort(short *out, float *in, int num)
-{
-  for (int i = 0; i < num; i++) {
-    out[2 * i + 0] = (short) in[2 * i + 0];
-    out[2 * i + 1] = (short) in[2 * i + 1];
-  }
+extern "C" {
+#include "convert.h"
 }
 
-/* Complex short to float conversion */
-static void shortToFloat(float *out, short *in, int num)
-{
-  for (int i = 0; i < num; i++) {
-    out[2 * i + 0] = (float) in[2 * i + 0];
-    out[2 * i + 1] = (float) in[2 * i + 1];
-  }
-}
+#define CHUNK		625
+#define NUMCHUNKS	4
 
-RadioInterface::RadioInterface(RadioDevice *wRadio,
-			       int wChanM,
-			       int wSPS,
-                               int wReceiveOffset,
-			       GSM::Time wStartTime)
-  : mChanM(wChanM), underrun(false), sendCursor(0), rcvCursor(0), mOn(false),
-    mRadio(wRadio), receiveOffset(wReceiveOffset), samplesPerSymbol(wSPS),
-    powerScaling(1.0), loadTest(false)
+RadioInterface::RadioInterface(RadioDevice *wRadio, size_t tx_sps,
+                               size_t rx_sps, size_t chans, size_t diversity,
+                               int wReceiveOffset, GSM::Time wStartTime)
+  : mRadio(wRadio), mSPSTx(tx_sps), mSPSRx(rx_sps), mChans(chans),
+    mMIMO(diversity), sendCursor(0), recvCursor(0), underrun(false),
+    overrun(false), receiveOffset(wReceiveOffset), mOn(false)
 {
   mClock.set(wStartTime);
 }
 
 RadioInterface::~RadioInterface(void)
 {
-  if (mOn) {
-    mRadio->stop();
-    close();
+  close();
+}
 
-    for (int i = 0; i < mChanM; i++) {
-      if (rcvBuffer[i] != NULL)
-        delete rcvBuffer[i];
-      if (sendBuffer[i] != NULL)
-        delete sendBuffer[i];
-    }
+bool RadioInterface::init(int type)
+{
+  if ((type != RadioDevice::NORMAL) || (mMIMO > 1) || !mChans) {
+    LOG(ALERT) << "Invalid configuration";
+    return false;
   }
+
+  close();
+
+  sendBuffer.resize(mChans);
+  recvBuffer.resize(mChans);
+  convertSendBuffer.resize(mChans);
+  convertRecvBuffer.resize(mChans);
+  mReceiveFIFO.resize(mChans);
+  powerScaling.resize(mChans);
+
+  for (size_t i = 0; i < mChans; i++) {
+    sendBuffer[i] = new signalVector(CHUNK * mSPSTx);
+    recvBuffer[i] = new signalVector(NUMCHUNKS * CHUNK * mSPSRx);
+
+    convertSendBuffer[i] = new short[sendBuffer[i]->size() * 2];
+    convertRecvBuffer[i] = new short[recvBuffer[i]->size() * 2];
+  }
+
+  sendCursor = 0;
+  recvCursor = 0;
+
+  return true;
+}
+
+void RadioInterface::close()
+{
+  for (size_t i = 0; i < sendBuffer.size(); i++)
+    delete sendBuffer[i];
+
+  for (size_t i = 0; i < recvBuffer.size(); i++)
+    delete recvBuffer[i];
+
+  for (size_t i = 0; i < convertSendBuffer.size(); i++)
+    delete convertSendBuffer[i];
+
+  for (size_t i = 0; i < convertRecvBuffer.size(); i++)
+    delete convertRecvBuffer[i];
+
+  sendBuffer.resize(0);
+  recvBuffer.resize(0);
+  convertSendBuffer.resize(0);
+  convertRecvBuffer.resize(0);
 }
 
 double RadioInterface::fullScaleInputValue(void) {
@@ -84,111 +106,119 @@ double RadioInterface::fullScaleOutputValue(void) {
   return mRadio->fullScaleOutputValue();
 }
 
-
-void RadioInterface::setPowerAttenuation(double atten, int chan)
+int RadioInterface::setPowerAttenuation(int atten, size_t chan)
 {
   double rfGain, digAtten;
 
-  rfGain = mRadio->setTxGain(mRadio->maxTxGain() - atten, chan);
-  digAtten = atten - mRadio->maxTxGain() + rfGain;
+  if (chan >= mChans) {
+    LOG(ALERT) << "Invalid channel requested";
+    return -1;
+  }
+
+  if (atten < 0.0)
+    atten = 0.0;
+
+  rfGain = mRadio->setTxGain(mRadio->maxTxGain() - (double) atten, chan);
+  digAtten = (double) atten - mRadio->maxTxGain() + rfGain;
 
   if (digAtten < 1.0)
-    powerScaling = 1.0;
+    powerScaling[chan] = 1.0;
   else
-    powerScaling = 1.0/sqrt(pow(10, (digAtten/10.0)));
+    powerScaling[chan] = 1.0 / sqrt(pow(10, digAtten / 10.0));
+
+  return atten;
 }
 
 int RadioInterface::radioifyVector(signalVector &wVector,
 				   float *retVector,
-				   float scale,
 				   bool zero)
 {
-  int i;
-  signalVector::iterator itr = wVector.begin();
-
   if (zero) {
     memset(retVector, 0, wVector.size() * 2 * sizeof(float));
     return wVector.size();
   }
 
-  for (i = 0; i < wVector.size(); i++) {
-    retVector[2 * i + 0] = itr->real() * scale;
-    retVector[2 * i + 1] = itr->imag() * scale;
-    itr++;
-  }
+  memcpy(retVector, wVector.begin(), wVector.size() * 2 * sizeof(float));
 
   return wVector.size();
 }
 
-int RadioInterface::unRadioifyVector(float *floatVector, int offset,
-				     signalVector &newVector)
+int RadioInterface::unRadioifyVector(float *floatVector,
+				     signalVector& newVector)
 {
-  int i;
   signalVector::iterator itr = newVector.begin();
 
-  for (i = 0; i < newVector.size(); i++) {
-    *itr++ = Complex<float>(floatVector[offset + 2 * i + 0],
-			    floatVector[offset + 2 * i + 1]);
+  if (newVector.size() > recvCursor) {
+    LOG(ALERT) << "Insufficient number of samples in receive buffer";
+    return -1;
+  }
+
+  for (size_t i = 0; i < newVector.size(); i++) {
+    *itr++ = Complex<float>(floatVector[2 * i + 0],
+			    floatVector[2 * i + 1]);
   }
 
   return newVector.size();
 }
 
-bool RadioInterface::tuneTx(double freq, int chan)
+bool RadioInterface::tuneTx(double freq, size_t chan)
 {
   return mRadio->setTxFreq(freq, chan);
 }
 
-bool RadioInterface::tuneRx(double freq, int chan)
+bool RadioInterface::tuneRx(double freq, size_t chan)
 {
   return mRadio->setRxFreq(freq, chan);
 }
 
-
 bool RadioInterface::start()
 {
-  int i;
-
   if (mOn)
+    return true;
+
+  LOG(INFO) << "Starting radio device";
+#ifdef USRP1
+  mAlignRadioServiceLoopThread.start((void * (*)(void*))AlignRadioServiceLoopAdapter,
+                                     (void*)this);
+#endif
+
+  if (!mRadio->start())
     return false;
 
-  mOn = true;
-#ifdef USRP1
-  mAlignRadioServiceLoopThread = new Thread(32768);
-  mAlignRadioServiceLoopThread->start((void * (*)(void*))AlignRadioServiceLoopAdapter,
-                                      (void*)this);
-#endif
+  recvCursor = 0;
+  sendCursor = 0;
+
   writeTimestamp = mRadio->initialWriteTimestamp();
   readTimestamp = mRadio->initialReadTimestamp();
-  for (i = 0; i < mChanM; i++) {
-    sendBuffer[i] = new float[8*2*INCHUNK];
-    rcvBuffer[i] = new float[8*2*OUTCHUNK];
-  }
 
-  /* Init I/O specific variables if applicable */ 
-  init();
-
-  mRadio->start(); 
-  LOG(DEBUG) << "Radio started";
-  mRadio->updateAlignment(writeTimestamp-10000); 
+  mRadio->updateAlignment(writeTimestamp-10000);
   mRadio->updateAlignment(writeTimestamp-10000);
 
+  mOn = true;
+  LOG(INFO) << "Radio started";
   return true;
 }
 
+/*
+ * Stop the radio device
+ *
+ * This is a pass-through call to the device interface. Because the underlying
+ * stop command issuance generally doesn't return confirmation on device status,
+ * this call will only return false if the device is already stopped.
+ */
 bool RadioInterface::stop()
 {
-  if (!mOn)
+  if (!mOn || !mRadio->stop())
     return false;
 
   mOn = false;
-  mRadio->stop();
+  return true;
 }
 
 #ifdef USRP1
 void *AlignRadioServiceLoopAdapter(RadioInterface *radioInterface)
 {
-  while (radioInterface->on()) {
+  while (1) {
     radioInterface->alignRadio();
     pthread_testcancel();
   }
@@ -201,89 +231,111 @@ void RadioInterface::alignRadio() {
 }
 #endif
 
-void RadioInterface::driveTransmitRadio(signalVector **radioBurst, bool *zeroBurst)
+void RadioInterface::driveTransmitRadio(std::vector<signalVector *> &bursts,
+                                        std::vector<bool> &zeros)
 {
-  int i;
-
   if (!mOn)
     return;
 
-  for (i = 0; i < mChanM; i++) {
-    radioifyVector(*radioBurst[i], sendBuffer[i] + 2 * sendCursor,
-                   powerScaling, zeroBurst[i]);
+  for (size_t i = 0; i < mChans; i++) {
+    radioifyVector(*bursts[i],
+                   (float *) (sendBuffer[i]->begin() + sendCursor), zeros[i]);
   }
 
-  /* 
-   * All bursts should be the same size since all transceivers are
-   * tied with a single clock in the radio interface.
-   */
-  sendCursor += radioBurst[0]->size();
+  sendCursor += bursts[0]->size();
 
   pushBuffer();
 }
 
-static inline void shiftRxBuffers(float **buf, int offset, int len, int chanM)
+bool RadioInterface::driveReceiveRadio()
 {
-  for (int i = 0; i < chanM; i++)
-      memmove(buf[i], buf[i] + offset, sizeof(float) * len);
-}
+  radioVector *burst = NULL;
 
-void RadioInterface::loadVectors(unsigned tN, int samplesPerBurst,
-                                 int idx, GSM::Time rxClock)
-{
-  int i;
-
-  for (i = 0; i < mChanM; i++) {
-    signalVector rxVector(samplesPerBurst);
-    unRadioifyVector(rcvBuffer[i], idx * 2, rxVector);
-    radioVector *rxBurst = new radioVector(rxVector, rxClock);
-    mReceiveFIFO[i].write(rxBurst);
-  }
-}
-
-void RadioInterface::driveReceiveRadio()
-{
   if (!mOn)
-    return;
-
-  if (mReceiveFIFO[0].size() > 8)
-    return;
+    return false;
 
   pullBuffer();
 
   GSM::Time rcvClock = mClock.get();
   rcvClock.decTN(receiveOffset);
   unsigned tN = rcvClock.TN();
-  int rcvSz = rcvCursor;
+  int recvSz = recvCursor;
   int readSz = 0;
   const int symbolsPerSlot = gSlotLen + 8;
-  int samplesPerBurst = (symbolsPerSlot + (tN % 4 == 0)) * samplesPerSymbol;
+  int burstSize;
 
-  // while there's enough data in receive buffer, form received 
-  //    GSM bursts and pass up to Transceiver
-  // Using the 157-156-156-156 symbols per timeslot format.
-  while (rcvSz >= samplesPerBurst) { 
-    if (rcvClock.FN() >= 0) {
-      loadVectors(tN, samplesPerBurst, readSz, rcvClock);
+  if (mSPSRx == 4)
+    burstSize = 625;
+  else
+    burstSize = symbolsPerSlot + (tN % 4 == 0);
+
+  /* 
+   * Pre-allocate head room for the largest correlation size
+   * so we can later avoid a re-allocation and copy
+   * */
+  size_t head = GSM::gRACHSynchSequence.size();
+
+  /*
+   * Form receive bursts and pass up to transceiver. Use repeating
+   * pattern of 157-156-156-156 symbols per timeslot
+   */
+  while (recvSz > burstSize) {
+    for (size_t i = 0; i < mChans; i++) {
+      burst = new radioVector(rcvClock, burstSize, head, mMIMO);
+
+      for (size_t n = 0; n < mMIMO; n++) {
+        unRadioifyVector((float *)
+                         (recvBuffer[mMIMO * i + n]->begin() + readSz),
+                         *burst->getVector(n));
+      }
+
+      if (mReceiveFIFO[i].size() < 32)
+        mReceiveFIFO[i].write(burst);
+      else
+        delete burst;
     }
 
     mClock.incTN();
     rcvClock.incTN();
-
-    readSz += samplesPerBurst;
-    rcvSz -= samplesPerBurst;
+    readSz += burstSize;
+    recvSz -= burstSize;
 
     tN = rcvClock.TN();
-    samplesPerBurst = (symbolsPerSlot + (tN % 4 == 0)) * samplesPerSymbol;
+
+    if (mSPSRx != 4)
+      burstSize = (symbolsPerSlot + (tN % 4 == 0)) * mSPSRx;
   }
 
   if (readSz > 0) {
-    rcvCursor -= readSz;
-    shiftRxBuffers(rcvBuffer, 2 * readSz, 2 * rcvCursor, mChanM);
+    for (size_t i = 0; i < recvBuffer.size(); i++) {
+      memmove(recvBuffer[i]->begin(),
+              recvBuffer[i]->begin() + readSz,
+              (recvCursor - readSz) * 2 * sizeof(float));
+    }
+
+    recvCursor -= readSz;
   }
+
+  return true;
 }
 
-double RadioInterface::setRxGain(double dB, int chan)
+bool RadioInterface::isUnderrun()
+{
+  bool retVal = underrun;
+  underrun = false;
+
+  return retVal;
+}
+
+VectorFIFO* RadioInterface::receiveFIFO(size_t chan)
+{
+  if (chan >= mReceiveFIFO.size())
+    return NULL;
+
+  return &mReceiveFIFO[chan];
+}
+
+double RadioInterface::setRxGain(double dB, size_t chan)
 {
   if (mRadio)
     return mRadio->setRxGain(dB, chan);
@@ -291,7 +343,7 @@ double RadioInterface::setRxGain(double dB, int chan)
     return -1;
 }
 
-double RadioInterface::getRxGain(int chan)
+double RadioInterface::getRxGain(size_t chan)
 {
   if (mRadio)
     return mRadio->getRxGain(chan);
@@ -299,56 +351,60 @@ double RadioInterface::getRxGain(int chan)
     return -1;
 }
 
-bool RadioInterface::init()
-{
-	for (int i = 0; i < CHAN_MAX; i++) {
-		rx_buf[i] = new short[2 * OUTCHUNK];
-		tx_buf[i] = new short[4 * 2 * INCHUNK];
-	}
-}
-
-void RadioInterface::close()
-{
-	for (int i = 0; i < CHAN_MAX; i++) {
-		delete rx_buf[i];
-		delete tx_buf[i];
-	}
-}
-
-/* Receive a timestamped chunk from the device */ 
+/* Receive a timestamped chunk from the device */
 void RadioInterface::pullBuffer()
 {
   bool local_underrun;
+  int num_recv;
+  float *output;
 
-  /* Read samples. Fail if we don't get what we want. */
-  int num_rd = mRadio->readSamples(rx_buf, mChanM, OUTCHUNK, readTimestamp);
-
-  LOG(DEBUG) << "Rx read " << num_rd << " samples from device";
-  assert(num_rd == OUTCHUNK);
-
-  underrun |= local_underrun;
-  readTimestamp += (TIMESTAMP) num_rd;
-
-  for (int i = 0; i < mChanM; i++)
-    shortToFloat(rcvBuffer[i] + 2 * rcvCursor, rx_buf[i], num_rd);
-
-  rcvCursor += num_rd;
-}
-
-/* Send timestamped chunk to the device with arbitrary size */ 
-void RadioInterface::pushBuffer()
-{
-  if (sendCursor < INCHUNK)
+  if (recvCursor > recvBuffer[0]->size() - CHUNK)
     return;
 
-  for (int i = 0; i < mChanM; i++)
-    floatToShort(tx_buf[i], sendBuffer[i], sendCursor);
+  /* Outer buffer access size is fixed */
+  num_recv = mRadio->readSamples(convertRecvBuffer,
+                                 CHUNK,
+                                 &overrun,
+                                 readTimestamp,
+                                 &local_underrun);
+  if (num_recv != CHUNK) {
+          LOG(ALERT) << "Receive error " << num_recv;
+          return;
+  }
 
-  /* Write samples. Fail if we don't get what we want. */
-  int num_smpls = mRadio->writeSamples(tx_buf, mChanM, sendCursor,
-                                       writeTimestamp, &underrun);
-  assert(num_smpls == sendCursor);
+  for (size_t i = 0; i < mChans; i++) {
+    output = (float *) (recvBuffer[i]->begin() + recvCursor);
+    convert_short_float(output, convertRecvBuffer[i], 2 * num_recv);
+  }
 
-  writeTimestamp += (TIMESTAMP) num_smpls;
+  underrun |= local_underrun;
+
+  readTimestamp += num_recv;
+  recvCursor += num_recv;
+}
+
+/* Send timestamped chunk to the device with arbitrary size */
+void RadioInterface::pushBuffer()
+{
+  int num_sent;
+
+  if (sendCursor < CHUNK)
+    return;
+
+  if (sendCursor > sendBuffer[0]->size())
+    LOG(ALERT) << "Send buffer overflow";
+
+  for (size_t i = 0; i < mChans; i++) {
+    convert_float_short(convertSendBuffer[i],
+                        (float *) sendBuffer[i]->begin(),
+                        powerScaling[i], 2 * sendCursor);
+  }
+
+  /* Send the all samples in the send buffer */ 
+  num_sent = mRadio->writeSamples(convertSendBuffer,
+                                  sendCursor,
+                                  &underrun,
+                                  writeTimestamp);
+  writeTimestamp += num_sent;
   sendCursor = 0;
 }

Transceiver52M/radioInterface.h

@@ -1,5 +1,5 @@
 /*
-* Copyright 2008, 2012 Free Software Foundation, Inc.
+* Copyright 2008 Free Software Foundation, Inc.
 *
 * This software is distributed under multiple licenses; see the COPYING file in the main directory for licensing information for this specific distribuion.
 *
@@ -12,8 +12,7 @@
 
 */
 
-#ifndef _RADIOINTEFACE_H_
-#define _RADIOINTEFACE_H_
+
 
 #include "sigProcLib.h"  
 #include "GSMCommon.h"
@@ -21,13 +20,7 @@
 #include "radioDevice.h"
 #include "radioVector.h"
 #include "radioClock.h"
-
-/** samples per GSM symbol */
-#define SAMPSPERSYM 1
-#define INCHUNK    (625)
-#define OUTCHUNK   (625)
-#define CHAN_MAX    2
-
+#include "Resampler.h"
 
 static const unsigned gSlotLen = 148;      ///< number of symbols per slot, not counting guard periods
 
@@ -36,18 +29,25 @@ class RadioInterface {
 
 protected:
 
-  int mChanM;                                 ///< channelizer width
+  Thread mAlignRadioServiceLoopThread;	      ///< thread that synchronizes transmit and receive sections
 
-  VectorFIFO mReceiveFIFO[CHAN_MAX];	      ///< FIFO that holds receive  bursts
+  std::vector<VectorFIFO>  mReceiveFIFO;      ///< FIFO that holds receive  bursts
 
   RadioDevice *mRadio;			      ///< the USRP object
- 
-  float *sendBuffer[CHAN_MAX];
+
+  size_t mSPSTx;
+  size_t mSPSRx;
+  size_t mChans;
+  size_t mMIMO;
+
+  std::vector<signalVector *> sendBuffer;
+  std::vector<signalVector *> recvBuffer;
   unsigned sendCursor;
+  unsigned recvCursor;
 
-  float *rcvBuffer[CHAN_MAX];
-  unsigned rcvCursor;
-
+  std::vector<short *> convertRecvBuffer;
+  std::vector<short *> convertSendBuffer;
+  std::vector<float> powerScaling;
   bool underrun;			      ///< indicates writes to USRP are too slow
   bool overrun;				      ///< indicates reads from USRP are too slow
   TIMESTAMP writeTimestamp;		      ///< sample timestamp of next packet written to USRP
@@ -55,29 +55,19 @@ protected:
 
   RadioClock mClock;                          ///< the basestation clock!
 
-  int samplesPerSymbol;			      ///< samples per GSM symbol
   int receiveOffset;                          ///< offset b/w transmit and receive GSM timestamps, in timeslots
 
   bool mOn;				      ///< indicates radio is on
 
-  double powerScaling;
-
-  bool loadTest;
-  int mNumARFCNs;
-  signalVector *finalVec, *finalVec9;
-
 private:
-  /** initialize I/O internals */
-  bool init();
 
   /** format samples to USRP */ 
   int radioifyVector(signalVector &wVector,
                      float *floatVector,
-                     float scale,
                      bool zero);
 
   /** format samples from USRP */
-  int unRadioifyVector(float *floatVector, int offset, signalVector &wVector);
+  int unRadioifyVector(float *floatVector, signalVector &wVector);
 
   /** push GSM bursts into the transmit buffer */
   virtual void pushBuffer(void);
@@ -85,59 +75,54 @@ private:
   /** pull GSM bursts from the receive buffer */
   virtual void pullBuffer(void);
 
-  /** load receive vectors into FIFO's */
-  void loadVectors(unsigned tN, int samplesPerBurst, int index, GSM::Time rxClock);
-
 public:
 
   /** start the interface */
   bool start();
   bool stop();
 
-  bool started() { return mOn; };
-
-  /** shutdown interface */
-  void close();
+  /** intialization */
+  virtual bool init(int type);
+  virtual void close();
 
   /** constructor */
-  RadioInterface(RadioDevice* wRadio,
-		 int wChanM = 1,
-		 int wSPS = SAMPSPERSYM,
-                 int receiveOffset = 3,
-		 GSM::Time wStartTime = GSM::Time(0, 0));
-    
+  RadioInterface(RadioDevice* wRadio = NULL,
+                 size_t tx_sps = 4, size_t rx_sps = 1,
+		 size_t chans = 1, size_t diversity = 1,
+                 int receiveOffset = 3, GSM::Time wStartTime = GSM::Time(0));
+
   /** destructor */
-  ~RadioInterface();
+  virtual ~RadioInterface();
 
-  void setSamplesPerSymbol(int wSamplesPerSymbol) {if (!mOn) samplesPerSymbol = wSamplesPerSymbol;}
+  /** check for underrun, resets underrun value */
+  bool isUnderrun();
 
-  int getSamplesPerSymbol() { return samplesPerSymbol;}
- 
   /** return the receive FIFO */
-  VectorFIFO* receiveFIFO(int num) { return &mReceiveFIFO[num];}
+  VectorFIFO* receiveFIFO(size_t chan = 0);
 
   /** return the basestation clock */
   RadioClock* getClock(void) { return &mClock;};
 
   /** set transmit frequency */
-  bool tuneTx(double freq, int chan = 0);
+  bool tuneTx(double freq, size_t chan = 0);
 
   /** set receive frequency */
-  bool tuneRx(double freq, int chan = 0);
+  virtual bool tuneRx(double freq, size_t chan = 0);
 
   /** set receive gain */
-  double setRxGain(double dB, int chan = 0);
+  double setRxGain(double dB, size_t chan = 0);
 
   /** get receive gain */
-  double getRxGain(int chan = 0);
+  double getRxGain(size_t chan = 0);
 
   /** drive transmission of GSM bursts */
-  void driveTransmitRadio(signalVector **radioBurst, bool *zeroBurst);
+  void driveTransmitRadio(std::vector<signalVector *> &bursts,
+                          std::vector<bool> &zeros);
 
   /** drive reception of GSM bursts */
-  void driveReceiveRadio();
+  bool driveReceiveRadio();
 
-  void setPowerAttenuation(double atten, int chan = 0);
+  int setPowerAttenuation(int atten, size_t chan = 0);
 
   /** returns the full-scale transmit amplitude **/
   double fullScaleInputValue();
@@ -146,10 +131,66 @@ public:
   double fullScaleOutputValue();
 
   /** set thread priority on current thread */
-  void setPriority() { mRadio->setPriority(); }
+  void setPriority(float prio = 0.5) { mRadio->setPriority(prio); }
 
   /** get transport window type of attached device */ 
   enum RadioDevice::TxWindowType getWindowType() { return mRadio->getWindowType(); }
+
+#if USRP1
+protected:
+
+  /** drive synchronization of Tx/Rx of USRP */
+  void alignRadio();
+
+  friend void *AlignRadioServiceLoopAdapter(RadioInterface*);
+#endif
 };
 
-#endif /* _RADIOINTEFACE_H_ */
+#if USRP1
+/** synchronization thread loop */
+void *AlignRadioServiceLoopAdapter(RadioInterface*);
+#endif
+
+class RadioInterfaceResamp : public RadioInterface {
+
+private:
+  signalVector *innerSendBuffer;
+  signalVector *outerSendBuffer;
+  signalVector *innerRecvBuffer;
+  signalVector *outerRecvBuffer;
+
+  void pushBuffer();
+  void pullBuffer();
+
+public:
+
+  RadioInterfaceResamp(RadioDevice* wRadio, size_t wSPS = 4, size_t chans = 1);
+
+  ~RadioInterfaceResamp();
+
+  bool init(int type);
+  void close();
+};
+
+class RadioInterfaceDiversity : public RadioInterface {
+public:
+  RadioInterfaceDiversity(RadioDevice* wRadio,
+                          size_t sps = 4, size_t chans = 2);
+
+  ~RadioInterfaceDiversity();
+
+  bool init(int type);
+  void close();
+  bool tuneRx(double freq, size_t chan);
+
+private:
+  std::vector<Resampler *> dnsamplers;
+  std::vector<float> phases;
+  signalVector *outerRecvBuffer;
+
+  bool mDiversity;
+  double mFreqSpacing;
+
+  bool setupDiversityChannels();
+  void pullBuffer();
+};

Transceiver52M/radioInterfaceDiversity.cpp

@@ -0,0 +1,248 @@
+/*
+ * SSE Convolution
+ * Copyright (C) 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <radioInterface.h>
+#include <Logger.h>
+
+#include "Resampler.h"
+
+extern "C" {
+#include "convert.h"
+}
+
+/* Resampling parameters for 64 MHz clocking */
+#define RESAMP_64M_INRATE			20
+#define RESAMP_64M_OUTRATE			80
+
+/* Downlink block size */
+#define CHUNK					625
+
+/* Universal resampling parameters */
+#define NUMCHUNKS				48
+
+/*
+ * Resampling filter bandwidth scaling factor
+ *   This narrows the filter cutoff relative to the output bandwidth
+ *   of the polyphase resampler. At 4 samples-per-symbol using the
+ *   2 pulse Laurent GMSK approximation gives us below 0.5 degrees
+ *   RMS phase error at the resampler output.
+ */
+#define RESAMP_TX4_FILTER		0.45
+
+static size_t resamp_inrate = 0;
+static size_t resamp_inchunk = 0;
+static size_t resamp_outrate = 0;
+static size_t resamp_outchunk = 0;
+
+RadioInterfaceDiversity::RadioInterfaceDiversity(RadioDevice *wRadio,
+						 size_t sps, size_t chans)
+	: RadioInterface(wRadio, sps, chans, 2), outerRecvBuffer(NULL),
+	  mDiversity(false), mFreqSpacing(0.0)
+{
+}
+
+RadioInterfaceDiversity::~RadioInterfaceDiversity()
+{
+	close();
+}
+
+void RadioInterfaceDiversity::close()
+{
+	delete outerRecvBuffer;
+
+	outerRecvBuffer = NULL;
+
+	for (size_t i = 0; i < dnsamplers.size(); i++) {
+		delete dnsamplers[i];
+		dnsamplers[i] = NULL;
+	}
+
+	if (recvBuffer.size())
+		recvBuffer[0] = NULL;
+
+	RadioInterface::close();
+}
+
+bool RadioInterfaceDiversity::setupDiversityChannels()
+{
+	size_t inner_rx_len;
+
+	/* Inner and outer rates */
+	resamp_inrate = RESAMP_64M_INRATE;
+	resamp_outrate = RESAMP_64M_OUTRATE;
+	resamp_inchunk = resamp_inrate * 4;
+	resamp_outchunk = resamp_outrate * 4;
+
+	/* Buffer lengths */
+	inner_rx_len = NUMCHUNKS * resamp_inchunk;
+
+	/* Inside buffer must hold at least 2 bursts */
+	if (inner_rx_len < 157 * mSPSRx * 2) {
+		LOG(ALERT) << "Invalid inner buffer size " << inner_rx_len;
+		return false;
+	}
+
+	/* One Receive buffer and downsampler per diversity channel */
+	for (size_t i = 0; i < mMIMO * mChans; i++) {
+		dnsamplers[i] = new Resampler(resamp_inrate, resamp_outrate);
+		if (!dnsamplers[i]->init()) {
+			LOG(ALERT) << "Rx resampler failed to initialize";
+			return false;
+		}
+
+		recvBuffer[i] = new signalVector(inner_rx_len);
+	}
+
+	return true;
+}
+
+/* Initialize I/O specific objects */
+bool RadioInterfaceDiversity::init(int type)
+{
+	int tx_len, outer_rx_len;
+
+	if ((mMIMO != 2) || (mChans != 2)) {
+		LOG(ALERT) << "Unsupported channel configuration " << mChans;
+		return false;
+	}
+
+	/* Resize for channel combination */
+	sendBuffer.resize(mChans);
+	recvBuffer.resize(mChans * mMIMO);
+	convertSendBuffer.resize(mChans);
+	convertRecvBuffer.resize(mChans);
+	mReceiveFIFO.resize(mChans);
+	dnsamplers.resize(mChans * mMIMO);
+	phases.resize(mChans);
+
+	if (!setupDiversityChannels())
+		return false;
+
+	tx_len = CHUNK * mSPSTx;
+	outer_rx_len = resamp_outchunk;
+
+	for (size_t i = 0; i < mChans; i++) {
+		/* Full rate float and integer outer receive buffers */
+		convertRecvBuffer[i] = new short[outer_rx_len * 2];
+
+		/* Send buffers (not-resampled) */
+		sendBuffer[i] = new signalVector(tx_len);
+		convertSendBuffer[i] = new short[tx_len * 2];
+	}
+
+	outerRecvBuffer = new signalVector(outer_rx_len, dnsamplers[0]->len());
+
+	return true;
+}
+
+bool RadioInterfaceDiversity::tuneRx(double freq, size_t chan)
+{
+	double f0, f1;
+
+	if (chan > 1)
+		return false;
+
+	if (!mRadio->setRxFreq(freq, chan))
+		return false;
+
+	f0 = mRadio->getRxFreq(0);
+	f1 = mRadio->getRxFreq(1);
+
+	mFreqSpacing = f1 - f0;
+
+	if (abs(mFreqSpacing) <= 600e3)
+		mDiversity = true;
+	else
+		mDiversity = false;
+
+	return true;
+}
+
+/* Receive a timestamped chunk from the device */
+void RadioInterfaceDiversity::pullBuffer()
+{
+	bool local_underrun;
+	int rc, num, path0, path1;
+	signalVector *shift, *base;
+	float *in, *out, rate = -mFreqSpacing * 2.0 * M_PI / 1.08333333e6;
+
+	if (recvCursor > recvBuffer[0]->size() - resamp_inchunk)
+		return;
+
+	/* Outer buffer access size is fixed */
+	num = mRadio->readSamples(convertRecvBuffer,
+				  resamp_outchunk,
+				  &overrun,
+				  readTimestamp,
+				  &local_underrun);
+	if ((size_t) num != resamp_outchunk) {
+		LOG(ALERT) << "Receive error " << num;
+		return;
+	}
+
+	for (size_t i = 0; i < mChans; i++) {
+		convert_short_float((float *) outerRecvBuffer->begin(),
+			    convertRecvBuffer[i], 2 * resamp_outchunk);
+
+		if (!i) {
+			path0 = 0;
+			path1 = 2;
+		} else {
+			path0 = 3;
+			path1 = 1;
+		}
+
+		/* Diversity path 1 */
+		base = outerRecvBuffer;
+		in = (float *) base->begin();
+		out = (float *) (recvBuffer[path0]->begin() + recvCursor);
+
+		rc = dnsamplers[2 * i + 0]->rotate(in, resamp_outchunk,
+						   out, resamp_inchunk);
+		if (rc < 0) {
+			LOG(ALERT) << "Sample rate downsampling error";
+		}
+
+		/* Enable path 2 if Nyquist bandwidth is sufficient */
+		if (!mDiversity)
+			continue;
+
+		/* Diversity path 2 */
+		shift = new signalVector(base->size(), base->getStart());
+		in = (float *) shift->begin();
+		out = (float *) (recvBuffer[path1]->begin() + recvCursor);
+
+		rate = i ? -rate : rate;
+		if (!frequencyShift(shift, base, rate, phases[i], &phases[i])) {
+			LOG(ALERT) << "Frequency shift failed";
+		}
+
+		rc = dnsamplers[2 * i + 1]->rotate(in, resamp_outchunk,
+						   out, resamp_inchunk);
+		if (rc < 0) {
+			LOG(ALERT) << "Sample rate downsampling error";
+		}
+
+		delete shift;
+	}
+
+	underrun |= local_underrun;
+	readTimestamp += (TIMESTAMP) resamp_outchunk;
+	recvCursor += resamp_inchunk;
+}

Transceiver52M/radioInterfaceResamp.cpp

@@ -0,0 +1,260 @@
+/*
+ * Radio device interface with sample rate conversion
+ * Written by Thomas Tsou <tom@tsou.cc>
+ *
+ * Copyright 2011, 2012, 2013 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * See the COPYING file in the main directory for details.
+ */
+
+#include <radioInterface.h>
+#include <Logger.h>
+
+#include "Resampler.h"
+
+extern "C" {
+#include "convert.h"
+}
+
+/* Resampling parameters for 64 MHz clocking */
+#define RESAMP_64M_INRATE			65
+#define RESAMP_64M_OUTRATE			96
+
+/* Resampling parameters for 100 MHz clocking */
+#define RESAMP_100M_INRATE			52
+#define RESAMP_100M_OUTRATE			75
+
+/* Universal resampling parameters */
+#define NUMCHUNKS				24
+
+/*
+ * Resampling filter bandwidth scaling factor
+ *   This narrows the filter cutoff relative to the output bandwidth
+ *   of the polyphase resampler. At 4 samples-per-symbol using the
+ *   2 pulse Laurent GMSK approximation gives us below 0.5 degrees
+ *   RMS phase error at the resampler output.
+ */
+#define RESAMP_TX4_FILTER		0.45
+
+static Resampler *upsampler = NULL;
+static Resampler *dnsampler = NULL;
+static size_t resamp_inrate = 0;
+static size_t resamp_inchunk = 0;
+static size_t resamp_outrate = 0;
+static size_t resamp_outchunk = 0;
+
+RadioInterfaceResamp::RadioInterfaceResamp(RadioDevice *wRadio,
+					   size_t sps, size_t chans)
+	: RadioInterface(wRadio, sps, chans),
+	  innerSendBuffer(NULL), outerSendBuffer(NULL),
+	  innerRecvBuffer(NULL), outerRecvBuffer(NULL)
+{
+}
+
+RadioInterfaceResamp::~RadioInterfaceResamp()
+{
+	close();
+}
+
+void RadioInterfaceResamp::close()
+{
+	delete innerSendBuffer;
+	delete outerSendBuffer;
+	delete innerRecvBuffer;
+	delete outerRecvBuffer;
+
+	delete upsampler;
+	delete dnsampler;
+
+	innerSendBuffer = NULL;
+	outerSendBuffer = NULL;
+	innerRecvBuffer = NULL;
+	outerRecvBuffer = NULL;
+
+	upsampler = NULL;
+	dnsampler = NULL;
+
+	if (sendBuffer.size())
+		sendBuffer[0] = NULL;
+	if (recvBuffer.size())
+		recvBuffer[0] = NULL;
+
+	RadioInterface::close();
+}
+
+/* Initialize I/O specific objects */
+bool RadioInterfaceResamp::init(int type)
+{
+	float cutoff = 1.0f;
+
+	if (mChans != 1) {
+		LOG(ALERT) << "Unsupported channel configuration " << mChans;
+		return false;
+	}
+
+	close();
+
+	sendBuffer.resize(1);
+	recvBuffer.resize(1);
+	convertSendBuffer.resize(1);
+	convertRecvBuffer.resize(1);
+	mReceiveFIFO.resize(1);
+	powerScaling.resize(1);
+
+	switch (type) {
+	case RadioDevice::RESAMP_64M:
+		resamp_inrate = RESAMP_64M_INRATE;
+		resamp_outrate = RESAMP_64M_OUTRATE;
+		break;
+	case RadioDevice::RESAMP_100M:
+		resamp_inrate = RESAMP_100M_INRATE;
+		resamp_outrate = RESAMP_100M_OUTRATE;
+		break;
+	case RadioDevice::NORMAL:
+	default:
+		LOG(ALERT) << "Invalid device configuration";
+		return false;
+	}
+
+	resamp_inchunk = resamp_inrate * 4;
+	resamp_outchunk = resamp_outrate * 4;
+
+	if (resamp_inchunk  * NUMCHUNKS < 157 * mSPSTx * 2) {
+		LOG(ALERT) << "Invalid inner chunk size " << resamp_inchunk;
+		return false;
+	}
+
+	if (mSPSTx == 4)
+		cutoff = RESAMP_TX4_FILTER;
+
+	dnsampler = new Resampler(resamp_inrate, resamp_outrate);
+	if (!dnsampler->init()) {
+		LOG(ALERT) << "Rx resampler failed to initialize";
+		return false;
+	}
+
+	upsampler = new Resampler(resamp_outrate, resamp_inrate);
+	if (!upsampler->init(cutoff)) {
+		LOG(ALERT) << "Tx resampler failed to initialize";
+		return false;
+	}
+
+	/*
+	 * Allocate high and low rate buffers. The high rate receive
+	 * buffer and low rate transmit vectors feed into the resampler
+	 * and requires headroom equivalent to the filter length. Low
+	 * rate buffers are allocated in the main radio interface code.
+	 */
+	innerSendBuffer =
+		new signalVector(NUMCHUNKS * resamp_inchunk, upsampler->len());
+	outerSendBuffer =
+		new signalVector(NUMCHUNKS * resamp_outchunk);
+	outerRecvBuffer =
+		new signalVector(resamp_outchunk, dnsampler->len());
+	innerRecvBuffer =
+		new signalVector(NUMCHUNKS * resamp_inchunk / mSPSTx);
+
+	convertSendBuffer[0] = new short[outerSendBuffer->size() * 2];
+	convertRecvBuffer[0] = new short[outerRecvBuffer->size() * 2];
+
+	sendBuffer[0] = innerSendBuffer;
+	recvBuffer[0] = innerRecvBuffer;
+
+	return true;
+}
+
+/* Receive a timestamped chunk from the device */
+void RadioInterfaceResamp::pullBuffer()
+{
+	bool local_underrun;
+	int rc, num_recv;
+
+	if (recvCursor > innerRecvBuffer->size() - resamp_inchunk)
+		return;
+
+	/* Outer buffer access size is fixed */
+	num_recv = mRadio->readSamples(convertRecvBuffer,
+				       resamp_outchunk,
+				       &overrun,
+				       readTimestamp,
+				       &local_underrun);
+	if (num_recv != (int) resamp_outchunk) {
+		LOG(ALERT) << "Receive error " << num_recv;
+		return;
+	}
+
+	convert_short_float((float *) outerRecvBuffer->begin(),
+			    convertRecvBuffer[0], 2 * resamp_outchunk);
+
+	underrun |= local_underrun;
+	readTimestamp += (TIMESTAMP) resamp_outchunk;
+
+	/* Write to the end of the inner receive buffer */
+	rc = dnsampler->rotate((float *) outerRecvBuffer->begin(),
+			       resamp_outchunk,
+			       (float *) (innerRecvBuffer->begin() + recvCursor),
+			       resamp_inchunk);
+	if (rc < 0) {
+		LOG(ALERT) << "Sample rate upsampling error";
+	}
+
+	recvCursor += resamp_inchunk;
+}
+
+/* Send a timestamped chunk to the device */
+void RadioInterfaceResamp::pushBuffer()
+{
+	int rc, chunks, num_sent;
+	int inner_len, outer_len;
+
+	if (sendCursor < resamp_inchunk)
+		return;
+
+	if (sendCursor > innerSendBuffer->size())
+		LOG(ALERT) << "Send buffer overflow";
+
+	chunks = sendCursor / resamp_inchunk;
+
+	inner_len = chunks * resamp_inchunk;
+	outer_len = chunks * resamp_outchunk;
+
+	/* Always send from the beginning of the buffer */
+	rc = upsampler->rotate((float *) innerSendBuffer->begin(), inner_len,
+			       (float *) outerSendBuffer->begin(), outer_len);
+	if (rc < 0) {
+		LOG(ALERT) << "Sample rate downsampling error";
+	}
+
+	convert_float_short(convertSendBuffer[0],
+			    (float *) outerSendBuffer->begin(),
+			    powerScaling[0], 2 * outer_len);
+
+	num_sent = mRadio->writeSamples(convertSendBuffer,
+					outer_len,
+					&underrun,
+					writeTimestamp);
+	if (num_sent != outer_len) {
+		LOG(ALERT) << "Transmit error " << num_sent;
+	}
+
+	/* Shift remaining samples to beginning of buffer */
+	memmove(innerSendBuffer->begin(),
+		innerSendBuffer->begin() + inner_len,
+		(sendCursor - inner_len) * 2 * sizeof(float));
+
+	writeTimestamp += outer_len;
+	sendCursor -= inner_len;
+	assert(sendCursor >= 0);
+}

Transceiver52M/radioVector.cpp

@@ -2,7 +2,7 @@
  * Written by Thomas Tsou <ttsou@vt.edu>
  * Based on code by Harvind S Samra <hssamra@kestrelsp.com>
  *
- * Copyright 2011, 2012 Free Software Foundation, Inc.
+ * Copyright 2011 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as published by
@@ -21,9 +21,24 @@
 
 #include "radioVector.h"
 
-radioVector::radioVector(const signalVector& wVector, GSM::Time& wTime)
-	: signalVector(wVector), mTime(wTime)
+radioVector::radioVector(GSM::Time &time, size_t size,
+			 size_t start, size_t chans)
+	: vectors(chans), mTime(time)
 {
+	for (size_t i = 0; i < vectors.size(); i++)
+		vectors[i] = new signalVector(size, start);
+}
+
+radioVector::radioVector(GSM::Time& wTime, signalVector *vector)
+	: vectors(1), mTime(wTime)
+{
+	vectors[0] = vector;
+}
+
+radioVector::~radioVector()
+{
+	for (size_t i = 0; i < vectors.size(); i++)
+		delete vectors[i];
 }
 
 GSM::Time radioVector::getTime() const
@@ -41,6 +56,52 @@ bool radioVector::operator>(const radioVector& other) const
 	return mTime > other.mTime;
 }
 
+signalVector *radioVector::getVector(size_t chan) const
+{
+	if (chan >= vectors.size())
+		return NULL;
+
+	return vectors[chan];
+}
+
+bool radioVector::setVector(signalVector *vector, size_t chan)
+{
+	if (chan >= vectors.size())
+		return false;
+
+	vectors[chan] = vector;
+
+	return true;
+}
+
+noiseVector::noiseVector(size_t size)
+	: std::vector<float>(size), itr(0)
+{
+}
+
+float noiseVector::avg() const
+{
+	float val = 0.0;
+
+	for (size_t i = 0; i < size(); i++)
+		val += (*this)[i];
+
+	return val / (float) size();
+}
+
+bool noiseVector::insert(float val)
+{
+	if (!size())
+		return false;
+
+	if (itr >= this->size())
+		itr = 0;
+
+	(*this)[itr++] = val;
+
+	return true;
+}
+
 GSM::Time VectorQueue::nextTime() const
 {
 	GSM::Time retVal;

Transceiver52M/radioVector.h

@@ -2,7 +2,7 @@
  * Written by Thomas Tsou <ttsou@vt.edu>
  * Based on code by Harvind S Samra <hssamra@kestrelsp.com>
  *
- * Copyright 2011, 2012 Free Software Foundation, Inc.
+ * Copyright 2011 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as published by
@@ -26,20 +26,38 @@
 #include "GSMCommon.h"
 #include "Interthread.h"
 
-class radioVector : public signalVector {
+class radioVector {
 public:
-	radioVector(const signalVector& wVector, GSM::Time& wTime);
+	radioVector(GSM::Time& wTime, size_t size = 0,
+		    size_t start = 0, size_t chans = 1);
+
+	radioVector(GSM::Time& wTime, signalVector *vector);
+	~radioVector();
+
 	GSM::Time getTime() const;
 	void setTime(const GSM::Time& wTime);
 	bool operator>(const radioVector& other) const;
 
+	signalVector *getVector(size_t chan = 0) const;
+	bool setVector(signalVector *vector, size_t chan = 0);
+	size_t chans() const { return vectors.size(); }
 private:
+	std::vector<signalVector *> vectors;
 	GSM::Time mTime;
 };
 
-class VectorFIFO : public InterthreadQueue<radioVector> {
+class noiseVector : std::vector<float> {
+public:
+	noiseVector(size_t size = 0);
+	bool insert(float val);
+	float avg() const;
+
+private:
+	size_t itr;
 };
 
+class VectorFIFO : public InterthreadQueue<radioVector> { };
+
 class VectorQueue : public InterthreadPriorityQueue<radioVector> {
 public:
 	GSM::Time nextTime() const;

Transceiver52M/runTransceiver.cpp

@@ -1,164 +0,0 @@
-/*
-* Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
-* Copyright 2010 Kestrel Signal Processing, Inc.
-*
-* This software is distributed under the terms of the GNU Affero Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-	This program is free software: you can redistribute it and/or modify
-	it under the terms of the GNU Affero General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
-	(at your option) any later version.
-
-	This program is distributed in the hope that it will be useful,
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-	GNU Affero General Public License for more details.
-
-	You should have received a copy of the GNU Affero General Public License
-	along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-
-
-#include "Transceiver.h"
-#include "radioDevice.h"
-#include "DummyLoad.h"
-
-#include <time.h>
-#include <signal.h>
-
-#include <GSMCommon.h>
-#include <Logger.h>
-#include <Configuration.h>
-
-using namespace std;
-
-ConfigurationTable gConfig("/etc/OpenBTS/OpenBTS.db");
-
-
-volatile bool gbShutdown = false;
-static void ctrlCHandler(int signo)
-{
-   cout << "Received shutdown signal" << endl;;
-   gbShutdown = true;
-}
-
-
-int main(int argc, char *argv[])
-{
-  std::string deviceArgs;
-  std::string txAntenna, rxAntenna;
-
-  if (argc == 3)
-  {
-    deviceArgs = std::string(argv[2]);
-  }
-  else
-  {
-    deviceArgs = "";
-  }
-
-  if ( signal( SIGINT, ctrlCHandler ) == SIG_ERR )
-  {
-    cerr << "Couldn't install signal handler for SIGINT" << endl;
-    exit(1);
-  }
-
-  if ( signal( SIGTERM, ctrlCHandler ) == SIG_ERR )
-  {
-    cerr << "Couldn't install signal handler for SIGTERM" << endl;
-    exit(1);
-  }
-  // Configure logger.
-  gLogInit("transceiver",gConfig.getStr("Log.Level").c_str(),LOG_LOCAL7);
-
-  int numARFCN=1;
-
-  LOG(NOTICE) << "starting transceiver with " << numARFCN << " ARFCNs (argc=" << argc << ")";
-
-  srandom(time(NULL));
-
-  RadioDevice *usrp = RadioDevice::make(SAMPSPERSYM);
-  int radioType = usrp->open(deviceArgs);
-  if (radioType < 0) {
-    LOG(ALERT) << "Transceiver exiting..." << std::endl;
-    return EXIT_FAILURE;
-  }
-
-  if (gConfig.defines("GSM.Radio.TxAntenna"))
-    txAntenna = gConfig.getStr("GSM.Radio.TxAntenna").c_str();
-  if (gConfig.defines("GSM.Radio.RxAntenna"))
-    rxAntenna = gConfig.getStr("GSM.Radio.RxAntenna").c_str();
-
-  if (txAntenna != "")  
-    usrp->setTxAntenna(txAntenna);
-  if (rxAntenna != "")  
-    usrp->setRxAntenna(rxAntenna);
-
-  LOG(INFO) << "transceiver using transmit antenna " << usrp->getRxAntenna();
-  LOG(INFO) << "transceiver using receive antenna " << usrp->getTxAntenna();
-
-  RadioInterface* radio;
-  switch (radioType) {
-  case RadioDevice::NORMAL:
-    radio = new RadioInterface(usrp, 3, SAMPSPERSYM, false);
-    break;
-  case RadioDevice::RESAMP:
-  default:
-    LOG(ALERT) << "Unsupported configuration";
-    return EXIT_FAILURE;
-  }
-
-  int port = gConfig.getNum("TRX.Port");
-  const char *addr = gConfig.getStr("TRX.IP").c_str();
-  DriveLoop *drive = new DriveLoop(SAMPSPERSYM,GSM::Time(3,0),radio);
-  Transceiver *trx = new Transceiver(port, addr, SAMPSPERSYM, radio, drive, 0);
-  radio->activateChan(0);
-
-/*
-  signalVector *gsmPulse = generateGSMPulse(2,1);
-  BitVector normalBurstSeg = "0000101010100111110010101010010110101110011000111001101010000";
-  BitVector normalBurst(BitVector(normalBurstSeg,gTrainingSequence[0]),normalBurstSeg);
-  signalVector *modBurst = modulateBurst(normalBurst,*gsmPulse,8,1);
-  signalVector *modBurst9 = modulateBurst(normalBurst,*gsmPulse,9,1);
-  signalVector *interpolationFilter = createLPF(0.6/mOversamplingRate,6*mOversamplingRate,1);
-  signalVector totalBurst1(*modBurst,*modBurst9);
-  signalVector totalBurst2(*modBurst,*modBurst);
-  signalVector totalBurst(totalBurst1,totalBurst2);
-  scaleVector(totalBurst,usrp->fullScaleInputValue());
-  double beaconFreq = -1.0*(numARFCN-1)*200e3;
-  signalVector finalVec(625*mOversamplingRate);
-  for (int j = 0; j < numARFCN; j++) {
-	signalVector *frequencyShifter = new signalVector(625*mOversamplingRate);
-	frequencyShifter->fill(1.0);
-	frequencyShift(frequencyShifter,frequencyShifter,2.0*M_PI*(beaconFreq+j*400e3)/(1625.0e3/6.0*mOversamplingRate));
-  	signalVector *interpVec = polyphaseResampleVector(totalBurst,mOversamplingRate,1,interpolationFilter);
-	multVector(*interpVec,*frequencyShifter);
-	addVector(finalVec,*interpVec); 	
-  }
-  signalVector::iterator itr = finalVec.begin();
-  short finalVecShort[2*finalVec.size()];
-  short *shortItr = finalVecShort;
-  while (itr < finalVec.end()) {
-	*shortItr++ = (short) (itr->real());
-	*shortItr++ = (short) (itr->imag());
-	itr++;
-  }
-  usrp->loadBurst(finalVecShort,finalVec.size());
-*/
-  trx->start();
-
-  while(!gbShutdown) { sleep(1); }//i++; if (i==60) break;}
-
-  cout << "Shutting down transceiver..." << endl;
-  trx->shutdown();
-
-  delete trx;
-  delete drive;
-  delete radio;
-}

Transceiver52M/sigProcLib.h

@@ -18,73 +18,27 @@
 #include "Vector.h"
 #include "Complex.h"
 #include "BitVector.h"
+#include "signalVector.h"
 
-/** Indicated signalVector symmetry */
-enum Symmetry {
-  NONE = 0,
-  ABSSYM = 1
-};
+/* Burst lengths */
+#define NORMAL_BURST_NBITS		148
+#define EDGE_BURST_NBITS		444
+#define EDGE_BURST_NSYMS		(EDGE_BURST_NBITS / 3)
 
 /** Convolution type indicator */
 enum ConvType {
-  FULL_SPAN = 0,
-  OVERLAP_ONLY = 1,
-  START_ONLY = 2,
-  WITH_TAIL = 3,
-  NO_DELAY = 4,
-  CUSTOM = 5,
-  UNDEFINED = 255
+  START_ONLY,
+  NO_DELAY,
+  CUSTOM,
+  UNDEFINED,
 };
 
-/** the core data structure of the Transceiver */
-class signalVector: public Vector<complex> 
-{
-
- private:
-  
-  Symmetry symmetry;   ///< the symmetry of the vector
-  bool realOnly;       ///< true if vector is real-valued, not complex-valued
-  
- public:
-  
-  /** Constructors */
-  signalVector(int dSize=0, Symmetry wSymmetry = NONE):
-    Vector<complex>(dSize),
-    realOnly(false)
-    { 
-      symmetry = wSymmetry; 
-    };
-    
-  signalVector(complex* wData, size_t start, 
-	       size_t span, Symmetry wSymmetry = NONE):
-    Vector<complex>(NULL,wData+start,wData+start+span),
-    realOnly(false)
-    { 
-      symmetry = wSymmetry; 
-    };
-      
-  signalVector(const signalVector &vec1, const signalVector &vec2):
-    Vector<complex>(vec1,vec2),
-    realOnly(false)
-    { 
-      symmetry = vec1.symmetry; 
-    };
-	
-  signalVector(const signalVector &wVector):
-    Vector<complex>(wVector.size()),
-    realOnly(false)
-    {
-      wVector.copyTo(*this); 
-      symmetry = wVector.getSymmetry();
-    };
-
-  /** symmetry operators */
-  Symmetry getSymmetry() const { return symmetry;};
-  void setSymmetry(Symmetry wSymmetry) { symmetry = wSymmetry;}; 
-
-  /** real-valued operators */
-  bool isRealOnly() const { return realOnly;};
-  void isRealOnly(bool wOnly) { realOnly = wOnly;};
+enum signalError {
+  SIGERR_NONE,
+  SIGERR_BOUNDS,
+  SIGERR_CLIP,
+  SIGERR_UNSUPPORTED,
+  SIGERR_INTERNAL,
 };
 
 /** Convert a linear number to a dB value */
@@ -100,7 +54,7 @@ float vectorNorm2(const signalVector &x);
 float vectorPower(const signalVector &x);
 
 /** Setup the signal processing library */
-void sigProcLibSetup(int samplesPerSymbol);
+bool sigProcLibSetup();
 
 /** Destroy the signal processing library */
 void sigProcLibDestroy(void);
@@ -110,23 +64,12 @@ void sigProcLibDestroy(void);
 	@param a,b The vectors to be convolved.
 	@param c, A preallocated vector to hold the convolution result.
 	@param spanType The type/span of the convolution.
-	@return The convolution result.
+	@return The convolution result or NULL on error.
 */
-signalVector* convolve(const signalVector *a,
-		       const signalVector *b,
-		       signalVector *c,
-		       ConvType spanType,
-		       unsigned startIx = 0,
-		       unsigned len = 0);
-
-/** 
-	Generate the GSM pulse. 
-	@param samplesPerSymbol The number of samples per GSM symbol.
-	@param symbolLength The size of the pulse.
-	@return The GSM pulse.
-*/
-signalVector* generateGSMPulse(int samplesPerSymbol,
-			       int symbolLength);
+signalVector *convolve(const signalVector *a, const signalVector *b,
+                       signalVector *c, ConvType spanType,
+                       size_t start = 0, size_t len = 0,
+                       size_t step = 1, int offset = 0);
 
 /** 
         Frequency shift a vector.
@@ -163,16 +106,33 @@ bool vectorSlicer(signalVector *x);
 
 /** GMSK modulate a GSM burst of bits */
 signalVector *modulateBurst(const BitVector &wBurst,
-			    const signalVector &gsmPulse,
 			    int guardPeriodLength,
-			    int samplesPerSymbol);
+			    int sps, bool emptyPulse = false);
+
+/** 8-PSK modulate a burst of bits */
+signalVector *modulateEdgeBurst(const BitVector &bits,
+                                int sps, bool emptyPulse = false);
+
+/** Generate a EDGE burst with random payload - 4 SPS (625 samples) only */
+signalVector *generateEdgeBurst(int tsc);
+
+/** Generate an empty burst - 4 or 1 SPS */
+signalVector *generateEmptyBurst(int sps, int tn);
+
+/** Generate a normal GSM burst with random payload - 4 or 1 SPS */
+signalVector *genRandNormalBurst(int tsc, int sps, int tn);
+
+/** Generate an access GSM burst with random payload - 4 or 1 SPS */
+signalVector *genRandAccessBurst(int delay, int sps, int tn);
+
+/** Generate a dummy GSM burst - 4 or 1 SPS */
+signalVector *generateDummyBurst(int sps, int tn);
 
 /** Sinc function */
 float sinc(float x);
 
 /** Delay a vector */
-void delayVector(signalVector &wBurst,
-		 float delay);
+signalVector *delayVector(signalVector *in, signalVector *out, float delay);
 
 /** Add two vectors in-place */
 bool addVector(signalVector &x,
@@ -215,33 +175,6 @@ complex peakDetect(const signalVector &rxBurst,
 void scaleVector(signalVector &x,
 		 complex scale);
 
-/**      
-        Add a constant offset to a vecotr.
-        @param x The vector of interest.
-        @param offset The offset.
-*/
-void offsetVector(signalVector &x,
-		  complex offset);
-
-/**
-        Generate a modulated GSM midamble, stored within the library.
-        @param gsmPulse The GSM pulse used for modulation.
-        @param samplesPerSymbol The number of samples per GSM symbol.
-        @param TSC The training sequence [0..7]
-        @return Success.
-*/
-bool generateMidamble(signalVector &gsmPulse,
-		      int samplesPerSymbol,
-		      int TSC);
-/**
-        Generate a modulated RACH sequence, stored within the library.
-        @param gsmPulse The GSM pulse used for modulation.
-        @param samplesPerSymbol The number of samples per GSM symbol.
-        @return Success.
-*/
-bool generateRACHSequence(signalVector &gsmPulse,
-			  int samplesPerSymbol);
-
 /**
         Energy detector, checks to see if received burst energy is above a threshold.
         @param rxBurst The received GSM burst of interest.
@@ -259,128 +192,97 @@ bool energyDetect(signalVector &rxBurst,
         RACH correlator/detector.
         @param rxBurst The received GSM burst of interest.
         @param detectThreshold The threshold that the received burst's post-correlator SNR is compared against to determine validity.
-        @param samplesPerSymbol The number of samples per GSM symbol.
+        @param sps The number of samples per GSM symbol.
         @param amplitude The estimated amplitude of received RACH burst.
         @param TOA The estimate time-of-arrival of received RACH burst.
-        @return True if burst SNR is larger that the detectThreshold value.
+        @param maxTOA The maximum expected time-of-arrival
+        @return positive if threshold value is reached, negative on error, zero otherwise
 */
-bool detectRACHBurst(signalVector &rxBurst,
-		     float detectThreshold,
-		     int samplesPerSymbol,
-		     complex *amplitude,
-		     float* TOA);
+int detectRACHBurst(signalVector &rxBurst,
+                    float detectThreshold,
+                    int sps,
+                    complex &amplitude,
+                    float &TOA,
+                    unsigned maxTOA);
 
 /**
         Normal burst correlator, detector, channel estimator.
         @param rxBurst The received GSM burst of interest.
  
         @param detectThreshold The threshold that the received burst's post-correlator SNR is compared against to determine validity.
-        @param samplesPerSymbol The number of samples per GSM symbol.
+        @param sps The number of samples per GSM symbol.
         @param amplitude The estimated amplitude of received TSC burst.
         @param TOA The estimate time-of-arrival of received TSC burst.
         @param maxTOA The maximum expected time-of-arrival
         @param requestChannel Set to true if channel estimation is desired.
         @param channelResponse The estimated channel.
         @param channelResponseOffset The time offset b/w the first sample of the channel response and the reported TOA.
-        @return True if burst SNR is larger that the detectThreshold value.
+        @return positive if threshold value is reached, negative on error, zero otherwise
 */
-bool analyzeTrafficBurst(signalVector &rxBurst,
-			 unsigned TSC,
-			 float detectThreshold,
-			 int samplesPerSymbol,
-			 complex *amplitude,
-			 float *TOA,
-                         unsigned maxTOA,
-                         bool requestChannel = false,
-			 signalVector** channelResponse = NULL,
-			 float *channelResponseOffset = NULL);
+int analyzeTrafficBurst(signalVector &rxBurst,
+                        unsigned TSC,
+                        float detectThreshold,
+                        int sps,
+                        complex &amplitude,
+                        float &TOA,
+                        unsigned maxTOA);
+
+/**
+        EDGE burst detector
+        @param burst The received GSM burst of interest
+ 
+        @param detectThreshold The threshold that the received burst's post-correlator SNR is compared against to determine validity.
+        @param sps The number of samples per GSM symbol.
+        @param amplitude The estimated amplitude of received TSC burst.
+        @param TOA The estimate time-of-arrival of received TSC burst.
+        @param maxTOA The maximum expected time-of-arrival
+        @return positive if threshold value is reached, negative on error, zero otherwise
+*/
+int detectEdgeBurst(signalVector &burst,
+                    unsigned TSC,
+                    float detectThreshold,
+                    int sps,
+                    complex &amplitude,
+                    float &TOA,
+                    unsigned maxTOA);
+
+/**
+	Downsample 4 SPS to 1 SPS using a polyphase filterbank
+        @param burst Input burst of at least 624 symbols
+        @return Decimated signal vector of 156 symbols
+*/
+
+signalVector *downsampleBurst(signalVector &burst);
 
 /**
 	Decimate a vector.
         @param wVector The vector of interest.
-        @param decimationFactor The amount of decimation, i.e. the decimation factor.
+        @param factor Decimation factor.
         @return The decimated signal vector.
 */
-signalVector *decimateVector(signalVector &wVector,
-			     int decimationFactor);
+signalVector *decimateVector(signalVector &wVector, size_t factor);
 
 /**
         Demodulates a received burst using a soft-slicer.
 	@param rxBurst The burst to be demodulated.
         @param gsmPulse The GSM pulse.
-        @param samplesPerSymbol The number of samples per GSM symbol.
+        @param sps The number of samples per GSM symbol.
         @param channel The amplitude estimate of the received burst.
         @param TOA The time-of-arrival of the received burst.
         @return The demodulated bit sequence.
 */
-SoftVector *demodulateBurst(signalVector &rxBurst,
-			 const signalVector &gsmPulse,
-			 int samplesPerSymbol,
-			 complex channel,
-			 float TOA);
+SoftVector *demodulateBurst(signalVector &rxBurst, int sps,
+                            complex channel, float TOA);
 
 /**
-        Creates a simple Kaiser-windowed low-pass FIR filter.
-        @param cutoffFreq The digital 3dB bandwidth of the filter.
-        @param filterLen The number of taps in the filter.
-        @param gainDC The DC gain of the filter.
-        @return The desired LPF
+        Demodulate 8-PSK EDGE burst with soft symbol ooutput
+	@param rxBurst The burst to be demodulated.
+        @param sps The number of samples per GSM symbol.
+        @param channel The amplitude estimate of the received burst.
+        @param TOA The time-of-arrival of the received burst.
+        @return The demodulated bit sequence.
 */
-signalVector *createLPF(float cutoffFreq,
-			int filterLen,
-                        float gainDC = 1.0);
-
-/**
-	Change sampling rate of a vector via polyphase resampling.
-        @param wVector The vector to be resampled.
-        @param P The numerator, i.e. the amount of upsampling.
-        @param Q The denominator, i.e. the amount of downsampling.
-	@param LPF An optional low-pass filter used in the resampling process.
-	@return A vector resampled at P/Q of the original sampling rate.
-*/    
-signalVector *polyphaseResampleVector(signalVector &wVector,
-				      int P, int Q,
-				      signalVector *LPF);
-
-/**
-	Change the sampling rate of a vector via linear interpolation.
-	@param wVector The vector to be resampled.
-	@param expFactor Ratio of new sampling rate/original sampling rate.
-	@param endPoint ???
-	@return A vector resampled a expFactor*original sampling rate.
-*/
-signalVector *resampleVector(signalVector &wVector,
-			     float expFactor,
-			     complex endPoint);
-
-/**
-	Design the necessary filters for a decision-feedback equalizer.
-	@param channelResponse The multipath channel that we're mitigating.
-	@param SNRestimate The signal-to-noise estimate of the channel, a linear value
-	@param Nf The number of taps in the feedforward filter.
-	@param feedForwardFilter The designed feed forward filter.
-	@param feedbackFilter The designed feedback filter.
-	@return True if DFE can be designed.
-*/
-bool designDFE(signalVector &channelResponse,
-	       float SNRestimate,
-	       int Nf,
-	       signalVector **feedForwardFilter,
-	       signalVector **feedbackFilter);
-
-/**
-	Equalize/demodulate a received burst via a decision-feedback equalizer.
-	@param rxBurst The received burst to be demodulated.
-	@param TOA The time-of-arrival of the received burst.
-	@param samplesPerSymbol The number of samples per GSM symbol.
-	@param w The feed forward filter of the DFE.
-	@param b The feedback filter of the DFE.
-	@return The demodulated bit sequence.
-*/
-SoftVector *equalizeBurst(signalVector &rxBurst,
-		       float TOA,
-		       int samplesPerSymbol,
-		       signalVector &w, 
-		       signalVector &b);
+SoftVector *demodEdgeBurst(signalVector &rxBurst, int sps,
+                           complex channel, float TOA);
 
 #endif /* SIGPROCLIB_H */

Transceiver52M/sigProcLibTest.cpp

@@ -1,170 +0,0 @@
-/*
-* Copyright 2011 Free Software Foundation, Inc.
-* Copyright 2008, 2010 Kestrel Signal Processing, Inc.
-*
-* This software is distributed under the terms of the GNU Affero Public License.
-* See the COPYING file in the main directory for details.
-*
-* This use of this software may be subject to additional restrictions.
-* See the LEGAL file in the main directory for details.
-
-	This program is free software: you can redistribute it and/or modify
-	it under the terms of the GNU Affero General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
-	(at your option) any later version.
-
-	This program is distributed in the hope that it will be useful,
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-	GNU Affero General Public License for more details.
-
-	You should have received a copy of the GNU Affero General Public License
-	along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-*/
-
-/*
-Contributors:
-Harvind S. Samra, hssamra@kestrelsp.com
-*/
-
-
-#include "sigProcLib.h"
-//#include "radioInterface.h"
-#include <Logger.h>
-#include <Configuration.h>
-#include <GSMCommon.h>
-
-using namespace std;
-using namespace GSM;
-
-ConfigurationTable gConfig;
-
-int main(int argc, char **argv) {
-
-  gLogInit("sigProcLibTest","DEBUG");
-
-  int samplesPerSymbol = 1;
-
-  int TSC = 2;
-
-  sigProcLibSetup(samplesPerSymbol);
-  
-  signalVector *gsmPulse = generateGSMPulse(2,samplesPerSymbol);
-  cout << *gsmPulse << endl;
-
-  BitVector RACHBurstStart = "01010101";
-  BitVector RACHBurstRest = "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
-
-  BitVector RACHBurst(BitVector(RACHBurstStart,gRACHSynchSequence),RACHBurstRest);
- 
-
-  signalVector *RACHSeq = modulateBurst(RACHBurst,
-                                        *gsmPulse,
-                                        9,
-                                        samplesPerSymbol);
-
-  generateRACHSequence(*gsmPulse,samplesPerSymbol);
-
-  complex a; float t;
-  detectRACHBurst(*RACHSeq, 5, samplesPerSymbol,&a,&t); 
-
-  //cout << *RACHSeq << endl;
-  //signalVector *autocorr = correlate(RACHSeq,RACHSeq,NULL,NO_DELAY);
-
-  //cout << *autocorr;
-
-  //exit(1);
- 
-
-  /*signalVector x(6500);
-  x.fill(1.0);
-
-  frequencyShift(&x,&x,0.48*M_PI);
-
-  signalVector *y = polyphaseResampleVector(x,96,65,NULL);
-
-  cout << *y << endl;
- 
-  exit(1);*/
-
-  //CommSig normalBurstSeg = "0000000000000000000000000000000000000000000000000000000000000";
-
-  BitVector normalBurstSeg = "0000101010100111110010101010010110101110011000111001101010000";
-
-  BitVector normalBurst(BitVector(normalBurstSeg,gTrainingSequence[TSC]),normalBurstSeg);
-
-
-  generateMidamble(*gsmPulse,samplesPerSymbol,TSC);
-
-
-  signalVector *modBurst = modulateBurst(normalBurst,*gsmPulse,
-                                         0,samplesPerSymbol);
-
-  
-  //delayVector(*rsVector2,6.932);
-
-  complex ampl = 1;
-  float TOA = 0;
-
-  //modBurst = rsVector2;
-  //delayVector(*modBurst,0.8);
-
-  /*
-  signalVector channelResponse(4);
-  signalVector::iterator c=channelResponse.begin();
-  *c = (complex) 9000.0; c++;
-  *c = (complex) 0.4*9000.0; c++; c++;
-  *c = (complex) -1.2*0;
-
-  signalVector *guhBurst = convolve(modBurst,&channelResponse,NULL,NO_DELAY);
-  delete modBurst; modBurst = guhBurst;
-  */
-
-  signalVector *chanResp;
-  /*
-  double noisePwr = 0.001/sqrtf(2);
-  signalVector *noise = gaussianNoise(modBurst->size(),noisePwr);
-  */
-  float chanRespOffset;
-  analyzeTrafficBurst(*modBurst,TSC,8.0,samplesPerSymbol,&ampl,&TOA,1,true,&chanResp,&chanRespOffset);
-  //addVector(*modBurst,*noise);
-
-  cout << "ampl:" << ampl << endl;
-  cout << "TOA: " << TOA << endl;
-  //cout << "chanResp: " << *chanResp << endl;
-  SoftVector *demodBurst = demodulateBurst(*modBurst,*gsmPulse,samplesPerSymbol,(complex) ampl, TOA);
-  
-  cout << *demodBurst << endl;
-
-  /*
-  COUT("chanResp: " << *chanResp);
-
-  signalVector *w,*b;
-  designDFE(*chanResp,1.0/noisePwr,7,&w,&b); 
-  COUT("w: " << *w);
-  COUT("b: " << *b);
-
- 
-  SoftSig *DFEBurst = equalizeBurst(*modBurst,TOA-chanRespOffset,samplesPerSymbol,*w,*b);
-  COUT("DFEBurst: " << *DFEBurst);
-
-  delete gsmPulse;
-  delete RACHSeq;
-  delete modBurst;
-  delete sendLPF;
-  delete rcvLPF;
-  delete rsVector;
-  //delete rsVector2;
-  delete autocorr;
-  delete chanResp;
-  delete noise;
-  delete demodBurst;
-  delete w;
-  delete b;
-  delete DFEBurst;  
-  */
-
-  sigProcLibDestroy();
-
-}

Transceiver52M/signalVector.cpp

@@ -0,0 +1,81 @@
+#include "signalVector.h"
+
+signalVector::signalVector(size_t size)
+	: Vector<complex>(size),
+	  real(false), aligned(false), symmetry(NONE)
+{
+}
+
+signalVector::signalVector(size_t size, size_t start)
+	: Vector<complex>(size + start),
+	  real(false), aligned(false), symmetry(NONE)
+{
+	mStart = mData + start;
+}
+
+signalVector::signalVector(complex *data, size_t start, size_t span)
+	: Vector<complex>(NULL, data + start, data + start + span),
+	  real(false), aligned(false), symmetry(NONE)
+{
+}
+
+signalVector::signalVector(const signalVector &vector)
+	: Vector<complex>(vector.size() + vector.getStart()), aligned(false)
+{
+	mStart = mData + vector.getStart();
+	vector.copyTo(*this);
+	symmetry = vector.getSymmetry();
+	real = vector.isReal();
+};
+
+signalVector::signalVector(const signalVector &vector,
+			   size_t start, size_t tail)
+	: Vector<complex>(start + vector.size() + tail), aligned(false)
+{
+	mStart = mData + start;
+	vector.copyTo(*this);
+	symmetry = vector.getSymmetry();
+	real = vector.isReal();
+};
+
+void signalVector::operator=(const signalVector& vector)
+{
+	resize(vector.size() + vector.getStart());
+	memcpy(mData, vector.mData, bytes());
+	mStart = mData + vector.getStart();
+}
+
+size_t signalVector::getStart() const
+{
+	return mStart - mData;
+}
+
+Symmetry signalVector::getSymmetry() const
+{
+	return symmetry;
+}
+
+void signalVector::setSymmetry(Symmetry symmetry)
+{
+	this->symmetry = symmetry;
+}
+
+bool signalVector::isReal() const
+{
+	return real;
+}
+
+void signalVector::isReal(bool wOnly)
+{
+	real = wOnly;
+}
+
+bool signalVector::isAligned() const
+{
+	return aligned;
+}
+
+void signalVector::setAligned(bool aligned)
+{
+	this->aligned = aligned;
+}

Transceiver52M/signalVector.h

@@ -0,0 +1,51 @@
+#ifndef _SIGNALVECTOR_H_
+#define _SIGNALVECTOR_H_
+
+#include <Vector.h>
+#include <Complex.h>
+
+/** Vector symmetry */
+enum Symmetry {
+  NONE = 0,
+  ABSSYM = 1
+};
+
+class signalVector: public Vector<complex> {
+public:
+	/** Default constructor */
+	signalVector(size_t size = 0);
+
+	/** Construct with head room */
+	signalVector(size_t size, size_t start);
+
+	/** Construct from existing buffer data (buffer not managed) */
+	signalVector(complex *data, size_t start, size_t span);
+
+	/** Construct by from existing vector */
+	signalVector(const signalVector &vector);
+
+	/** Construct by from existing vector and append head-tail room */
+	signalVector(const signalVector &vector, size_t start, size_t tail = 0);
+
+	/** Override base assignment operator to include start offsets */
+	void operator=(const signalVector& vector);
+
+	/** Return head room */
+	size_t getStart() const;
+
+	Symmetry getSymmetry() const;
+	void setSymmetry(Symmetry symmetry);
+
+	bool isReal() const;
+	void isReal(bool real);
+
+	bool isAligned() const;
+	void setAligned(bool aligned);
+
+private:
+	bool real;
+	bool aligned;
+	Symmetry symmetry;
+};
+
+#endif /* _SIGNALVECTOR_H_ */

Transceiver52M/x86/Makefile.am

@@ -0,0 +1,10 @@
+if !ARCH_ARM
+AM_CFLAGS = -Wall -std=gnu99 -march=native -I${srcdir}/../common
+
+noinst_LTLIBRARIES = libarch.la
+
+libarch_la_SOURCES = \
+	../common/convolve_base.c \
+	convert.c \
+	convolve.c
+endif

Transceiver52M/x86/convert.c

@@ -0,0 +1,201 @@
+/*
+ * SSE type conversions
+ * Copyright (C) 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include "convert.h"
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_SSE3
+#include <xmmintrin.h>
+#include <emmintrin.h>
+
+#ifdef HAVE_SSE4_1
+#include <smmintrin.h>
+
+/* 16*N 16-bit signed integer converted to single precision floats */
+static void _sse_convert_si16_ps_16n(float *restrict out,
+				     const short *restrict in,
+				     int len)
+{
+	__m128i m0, m1, m2, m3, m4, m5;
+	__m128 m6, m7, m8, m9;
+
+	for (int i = 0; i < len / 16; i++) {
+		/* Load (unaligned) packed floats */
+		m0 = _mm_loadu_si128((__m128i *) &in[16 * i + 0]);
+		m1 = _mm_loadu_si128((__m128i *) &in[16 * i + 8]);
+
+		/* Unpack */
+		m2 = _mm_cvtepi16_epi32(m0);
+		m4 = _mm_cvtepi16_epi32(m1);
+		m0 = _mm_shuffle_epi32(m0, _MM_SHUFFLE(1, 0, 3, 2));
+		m1 = _mm_shuffle_epi32(m1, _MM_SHUFFLE(1, 0, 3, 2));
+		m3 = _mm_cvtepi16_epi32(m0);
+		m5 = _mm_cvtepi16_epi32(m1);
+
+		/* Convert */
+		m6 = _mm_cvtepi32_ps(m2);
+		m7 = _mm_cvtepi32_ps(m3);
+		m8 = _mm_cvtepi32_ps(m4);
+		m9 = _mm_cvtepi32_ps(m5);
+
+		/* Store */
+		_mm_storeu_ps(&out[16 * i + 0], m6);
+		_mm_storeu_ps(&out[16 * i + 4], m7);
+		_mm_storeu_ps(&out[16 * i + 8], m8);
+		_mm_storeu_ps(&out[16 * i + 12], m9);
+	}
+}
+
+/* 16*N 16-bit signed integer conversion with remainder */
+static void _sse_convert_si16_ps(float *restrict out,
+				 const short *restrict in,
+				 int len)
+{
+	int start = len / 16 * 16;
+
+	_sse_convert_si16_ps_16n(out, in, len);
+
+	for (int i = 0; i < len % 16; i++)
+		out[start + i] = in[start + i];
+}
+#endif /* HAVE_SSE4_1 */
+
+/* 8*N single precision floats scaled and converted to 16-bit signed integer */
+static void _sse_convert_scale_ps_si16_8n(short *restrict out,
+					  const float *restrict in,
+					  float scale, int len)
+{
+	__m128 m0, m1, m2;
+	__m128i m4, m5;
+
+	for (int i = 0; i < len / 8; i++) {
+		/* Load (unaligned) packed floats */
+		m0 = _mm_loadu_ps(&in[8 * i + 0]);
+		m1 = _mm_loadu_ps(&in[8 * i + 4]);
+		m2 = _mm_load1_ps(&scale);
+
+		/* Scale */
+		m0 = _mm_mul_ps(m0, m2);
+		m1 = _mm_mul_ps(m1, m2);
+
+		/* Convert */
+		m4 = _mm_cvtps_epi32(m0);
+		m5 = _mm_cvtps_epi32(m1);
+
+		/* Pack and store */
+		m5 = _mm_packs_epi32(m4, m5);
+		_mm_storeu_si128((__m128i *) &out[8 * i], m5);
+	}
+}
+
+/* 8*N single precision floats scaled and converted with remainder */
+static void _sse_convert_scale_ps_si16(short *restrict out,
+				       const float *restrict in,
+				       float scale, int len)
+{
+	int start = len / 8 * 8;
+
+	_sse_convert_scale_ps_si16_8n(out, in, scale, len);
+
+	for (int i = 0; i < len % 8; i++)
+		out[start + i] = in[start + i] * scale;
+}
+
+/* 16*N single precision floats scaled and converted to 16-bit signed integer */
+static void _sse_convert_scale_ps_si16_16n(short *restrict out,
+					   const float *restrict in,
+					   float scale, int len)
+{
+	__m128 m0, m1, m2, m3, m4;
+	__m128i m5, m6, m7, m8;
+
+	for (int i = 0; i < len / 16; i++) {
+		/* Load (unaligned) packed floats */
+		m0 = _mm_loadu_ps(&in[16 * i + 0]);
+		m1 = _mm_loadu_ps(&in[16 * i + 4]);
+		m2 = _mm_loadu_ps(&in[16 * i + 8]);
+		m3 = _mm_loadu_ps(&in[16 * i + 12]);
+		m4 = _mm_load1_ps(&scale);
+
+		/* Scale */
+		m0 = _mm_mul_ps(m0, m4);
+		m1 = _mm_mul_ps(m1, m4);
+		m2 = _mm_mul_ps(m2, m4);
+		m3 = _mm_mul_ps(m3, m4);
+
+		/* Convert */
+		m5 = _mm_cvtps_epi32(m0);
+		m6 = _mm_cvtps_epi32(m1);
+		m7 = _mm_cvtps_epi32(m2);
+		m8 = _mm_cvtps_epi32(m3);
+
+		/* Pack and store */
+		m5 = _mm_packs_epi32(m5, m6);
+		m7 = _mm_packs_epi32(m7, m8);
+		_mm_storeu_si128((__m128i *) &out[16 * i + 0], m5);
+		_mm_storeu_si128((__m128i *) &out[16 * i + 8], m7);
+	}
+}
+#else /* HAVE_SSE3 */
+static void convert_scale_ps_si16(short *out, const float *in,
+				  float scale, int len)
+{
+	for (int i = 0; i < len; i++)
+		out[i] = in[i] * scale;
+}
+#endif
+
+#ifndef HAVE_SSE4_1
+static void convert_si16_ps(float *out, const short *in, int len)
+{
+	for (int i = 0; i < len; i++)
+		out[i] = in[i];
+}
+#endif
+
+void convert_float_short(short *out, const float *in, float scale, int len)
+{
+#ifdef HAVE_SSE3
+	if (!(len % 16))
+		_sse_convert_scale_ps_si16_16n(out, in, scale, len);
+	else if (!(len % 8))
+		_sse_convert_scale_ps_si16_8n(out, in, scale, len);
+	else
+		_sse_convert_scale_ps_si16(out, in, scale, len);
+#else
+	convert_scale_ps_si16(out, in, scale, len);
+#endif
+}
+
+void convert_short_float(float *out, const short *in, int len)
+{
+#ifdef HAVE_SSE4_1
+	if (!(len % 16))
+		_sse_convert_si16_ps_16n(out, in, len);
+	else
+		_sse_convert_si16_ps(out, in, len);
+#else
+	convert_si16_ps(out, in, len);
+#endif
+}

Transceiver52M/x86/convolve.c

@@ -0,0 +1,613 @@
+/*
+ * SSE Convolution
+ * Copyright (C) 2012, 2013 Thomas Tsou <tom@tsou.cc>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include <stdio.h>
+#include "convolve.h"
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Forward declarations from base implementation */
+int _base_convolve_real(const float *x, int x_len,
+			const float *h, int h_len,
+			float *y, int y_len,
+			int start, int len,
+			int step, int offset);
+
+int _base_convolve_complex(const float *x, int x_len,
+			   const float *h, int h_len,
+			   float *y, int y_len,
+			   int start, int len,
+			   int step, int offset);
+
+int bounds_check(int x_len, int h_len, int y_len,
+		 int start, int len, int step);
+
+#ifdef HAVE_SSE3
+#include <xmmintrin.h>
+#include <pmmintrin.h>
+
+/* 4-tap SSE complex-real convolution */
+static void sse_conv_real4(const float *restrict x,
+			   const float *restrict h,
+			   float *restrict y,
+			   int len)
+{
+	__m128 m0, m1, m2, m3, m4, m5, m6, m7;
+
+	/* Load (aligned) filter taps */
+	m0 = _mm_load_ps(&h[0]);
+	m1 = _mm_load_ps(&h[4]);
+	m7 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+
+	for (int i = 0; i < len; i++) {
+		/* Load (unaligned) input data */
+		m0 = _mm_loadu_ps(&x[2 * i + 0]);
+		m1 = _mm_loadu_ps(&x[2 * i + 4]);
+		m2 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m3 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+
+		/* Quad multiply */
+		m4 = _mm_mul_ps(m2, m7);
+		m5 = _mm_mul_ps(m3, m7);
+
+		/* Sum and store */
+		m6 = _mm_hadd_ps(m4, m5);
+		m0 = _mm_hadd_ps(m6, m6);
+
+		_mm_store_ss(&y[2 * i + 0], m0);
+		m0 = _mm_shuffle_ps(m0, m0, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m0);
+	}
+}
+
+/* 8-tap SSE complex-real convolution */
+static void sse_conv_real8(const float *restrict x,
+			   const float *restrict h,
+			   float *restrict y,
+			   int len)
+{
+	__m128 m0, m1, m2, m3, m4, m5, m6, m7, m8, m9;
+
+	/* Load (aligned) filter taps */
+	m0 = _mm_load_ps(&h[0]);
+	m1 = _mm_load_ps(&h[4]);
+	m2 = _mm_load_ps(&h[8]);
+	m3 = _mm_load_ps(&h[12]);
+
+	m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+	m5 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+
+	for (int i = 0; i < len; i++) {
+		/* Load (unaligned) input data */
+		m0 = _mm_loadu_ps(&x[2 * i + 0]);
+		m1 = _mm_loadu_ps(&x[2 * i + 4]);
+		m2 = _mm_loadu_ps(&x[2 * i + 8]);
+		m3 = _mm_loadu_ps(&x[2 * i + 12]);
+
+		m6 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m7 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+		m8 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+		m9 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+
+		/* Quad multiply */
+		m6 = _mm_mul_ps(m6, m4);
+		m7 = _mm_mul_ps(m7, m4);
+		m8 = _mm_mul_ps(m8, m5);
+		m9 = _mm_mul_ps(m9, m5);
+
+		/* Sum and store */
+		m6 = _mm_add_ps(m6, m8);
+		m7 = _mm_add_ps(m7, m9);
+		m6 = _mm_hadd_ps(m6, m7);
+		m6 = _mm_hadd_ps(m6, m6);
+
+		_mm_store_ss(&y[2 * i + 0], m6);
+		m6 = _mm_shuffle_ps(m6, m6, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m6);
+	}
+}
+
+/* 12-tap SSE complex-real convolution */
+static void sse_conv_real12(const float *restrict x,
+			    const float *restrict h,
+			    float *restrict y,
+			    int len)
+{
+	__m128 m0, m1, m2, m3, m4, m5, m6, m7;
+	__m128 m8, m9, m10, m11, m12, m13, m14;
+
+	/* Load (aligned) filter taps */
+	m0 = _mm_load_ps(&h[0]);
+	m1 = _mm_load_ps(&h[4]);
+	m2 = _mm_load_ps(&h[8]);
+	m3 = _mm_load_ps(&h[12]);
+	m4 = _mm_load_ps(&h[16]);
+	m5 = _mm_load_ps(&h[20]);
+
+	m12 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+	m13 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+	m14 = _mm_shuffle_ps(m4, m5, _MM_SHUFFLE(0, 2, 0, 2));
+
+	for (int i = 0; i < len; i++) {
+		/* Load (unaligned) input data */
+		m0 = _mm_loadu_ps(&x[2 * i + 0]);
+		m1 = _mm_loadu_ps(&x[2 * i + 4]);
+		m2 = _mm_loadu_ps(&x[2 * i + 8]);
+		m3 = _mm_loadu_ps(&x[2 * i + 12]);
+
+		m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m5 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+		m6 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+		m7 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+
+		m0 = _mm_loadu_ps(&x[2 * i + 16]);
+		m1 = _mm_loadu_ps(&x[2 * i + 20]);
+
+		m8 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m9 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+
+		/* Quad multiply */
+		m0 = _mm_mul_ps(m4, m12);
+		m1 = _mm_mul_ps(m5, m12);
+		m2 = _mm_mul_ps(m6, m13);
+		m3 = _mm_mul_ps(m7, m13);
+		m4 = _mm_mul_ps(m8, m14);
+		m5 = _mm_mul_ps(m9, m14);
+
+		/* Sum and store */
+		m8  = _mm_add_ps(m0, m2);
+		m9  = _mm_add_ps(m1, m3);
+		m10 = _mm_add_ps(m8, m4);
+		m11 = _mm_add_ps(m9, m5);
+
+		m2 = _mm_hadd_ps(m10, m11);
+		m3 = _mm_hadd_ps(m2, m2);
+
+		_mm_store_ss(&y[2 * i + 0], m3);
+		m3 = _mm_shuffle_ps(m3, m3, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m3);
+	}
+}
+
+/* 16-tap SSE complex-real convolution */
+static void sse_conv_real16(const float *restrict x,
+			    const float *restrict h,
+			    float *restrict y,
+			    int len)
+{
+	__m128 m0, m1, m2, m3, m4, m5, m6, m7;
+	__m128 m8, m9, m10, m11, m12, m13, m14, m15;
+
+	/* Load (aligned) filter taps */
+	m0 = _mm_load_ps(&h[0]);
+	m1 = _mm_load_ps(&h[4]);
+	m2 = _mm_load_ps(&h[8]);
+	m3 = _mm_load_ps(&h[12]);
+
+	m4 = _mm_load_ps(&h[16]);
+	m5 = _mm_load_ps(&h[20]);
+	m6 = _mm_load_ps(&h[24]);
+	m7 = _mm_load_ps(&h[28]);
+
+	m12 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+	m13 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+	m14 = _mm_shuffle_ps(m4, m5, _MM_SHUFFLE(0, 2, 0, 2));
+	m15 = _mm_shuffle_ps(m6, m7, _MM_SHUFFLE(0, 2, 0, 2));
+
+	for (int i = 0; i < len; i++) {
+		/* Load (unaligned) input data */
+		m0 = _mm_loadu_ps(&x[2 * i + 0]);
+		m1 = _mm_loadu_ps(&x[2 * i + 4]);
+		m2 = _mm_loadu_ps(&x[2 * i + 8]);
+		m3 = _mm_loadu_ps(&x[2 * i + 12]);
+
+		m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m5 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+		m6 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+		m7 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+
+		m0 = _mm_loadu_ps(&x[2 * i + 16]);
+		m1 = _mm_loadu_ps(&x[2 * i + 20]);
+		m2 = _mm_loadu_ps(&x[2 * i + 24]);
+		m3 = _mm_loadu_ps(&x[2 * i + 28]);
+
+		m8  = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m9  = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+		m10 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+		m11 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+
+		/* Quad multiply */
+		m0 = _mm_mul_ps(m4, m12);
+		m1 = _mm_mul_ps(m5, m12);
+		m2 = _mm_mul_ps(m6, m13);
+		m3 = _mm_mul_ps(m7, m13);
+
+		m4 = _mm_mul_ps(m8, m14);
+		m5 = _mm_mul_ps(m9, m14);
+		m6 = _mm_mul_ps(m10, m15);
+		m7 = _mm_mul_ps(m11, m15);
+
+		/* Sum and store */
+		m8  = _mm_add_ps(m0, m2);
+		m9  = _mm_add_ps(m1, m3);
+		m10 = _mm_add_ps(m4, m6);
+		m11 = _mm_add_ps(m5, m7);
+
+		m0 = _mm_add_ps(m8, m10);
+		m1 = _mm_add_ps(m9, m11);
+		m2 = _mm_hadd_ps(m0, m1);
+		m3 = _mm_hadd_ps(m2, m2);
+
+		_mm_store_ss(&y[2 * i + 0], m3);
+		m3 = _mm_shuffle_ps(m3, m3, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m3);
+	}
+}
+
+/* 20-tap SSE complex-real convolution */
+static void sse_conv_real20(const float *restrict x,
+			    const float *restrict h,
+			    float *restrict y,
+			    int len)
+{
+	__m128 m0, m1, m2, m3, m4, m5, m6, m7;
+	__m128 m8, m9, m11, m12, m13, m14, m15;
+
+	/* Load (aligned) filter taps */
+	m0 = _mm_load_ps(&h[0]);
+	m1 = _mm_load_ps(&h[4]);
+	m2 = _mm_load_ps(&h[8]);
+	m3 = _mm_load_ps(&h[12]);
+	m4 = _mm_load_ps(&h[16]);
+	m5 = _mm_load_ps(&h[20]);
+	m6 = _mm_load_ps(&h[24]);
+	m7 = _mm_load_ps(&h[28]);
+	m8 = _mm_load_ps(&h[32]);
+	m9 = _mm_load_ps(&h[36]);
+
+	m11 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+	m12 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+	m13 = _mm_shuffle_ps(m4, m5, _MM_SHUFFLE(0, 2, 0, 2));
+	m14 = _mm_shuffle_ps(m6, m7, _MM_SHUFFLE(0, 2, 0, 2));
+	m15 = _mm_shuffle_ps(m8, m9, _MM_SHUFFLE(0, 2, 0, 2));
+
+	for (int i = 0; i < len; i++) {
+		/* Multiply-accumulate first 12 taps */
+		m0 = _mm_loadu_ps(&x[2 * i + 0]);
+		m1 = _mm_loadu_ps(&x[2 * i + 4]);
+		m2 = _mm_loadu_ps(&x[2 * i + 8]);
+		m3 = _mm_loadu_ps(&x[2 * i + 12]);
+		m4 = _mm_loadu_ps(&x[2 * i + 16]);
+		m5 = _mm_loadu_ps(&x[2 * i + 20]);
+
+		m6  = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m7  = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+		m8  = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+		m9  = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+		m0  = _mm_shuffle_ps(m4, m5, _MM_SHUFFLE(0, 2, 0, 2));
+		m1  = _mm_shuffle_ps(m4, m5, _MM_SHUFFLE(1, 3, 1, 3));
+
+		m2 = _mm_mul_ps(m6, m11);
+		m3 = _mm_mul_ps(m7, m11);
+		m4 = _mm_mul_ps(m8, m12);
+		m5 = _mm_mul_ps(m9, m12);
+		m6 = _mm_mul_ps(m0, m13);
+		m7 = _mm_mul_ps(m1, m13);
+
+		m0  = _mm_add_ps(m2, m4);
+		m1  = _mm_add_ps(m3, m5);
+		m8  = _mm_add_ps(m0, m6);
+		m9  = _mm_add_ps(m1, m7);
+
+		/* Multiply-accumulate last 8 taps */
+		m0 = _mm_loadu_ps(&x[2 * i + 24]);
+		m1 = _mm_loadu_ps(&x[2 * i + 28]);
+		m2 = _mm_loadu_ps(&x[2 * i + 32]);
+		m3 = _mm_loadu_ps(&x[2 * i + 36]);
+
+		m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+		m5 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+		m6 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+		m7 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+
+		m0 = _mm_mul_ps(m4, m14);
+		m1 = _mm_mul_ps(m5, m14);
+		m2 = _mm_mul_ps(m6, m15);
+		m3 = _mm_mul_ps(m7, m15);
+
+		m4  = _mm_add_ps(m0, m2);
+		m5  = _mm_add_ps(m1, m3);
+
+		/* Final sum and store */
+		m0 = _mm_add_ps(m8, m4);
+		m1 = _mm_add_ps(m9, m5);
+		m2 = _mm_hadd_ps(m0, m1);
+		m3 = _mm_hadd_ps(m2, m2);
+
+		_mm_store_ss(&y[2 * i + 0], m3);
+		m3 = _mm_shuffle_ps(m3, m3, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m3);
+	}
+}
+
+/* 4*N-tap SSE complex-real convolution */
+static void sse_conv_real4n(const float *x,
+			    const float *h,
+			    float *y,
+			    int h_len, int len)
+{
+	__m128 m0, m1, m2, m4, m5, m6, m7;
+
+	for (int i = 0; i < len; i++) {
+		/* Zero */
+		m6 = _mm_setzero_ps();
+		m7 = _mm_setzero_ps();
+
+		for (int n = 0; n < h_len / 4; n++) {
+			/* Load (aligned) filter taps */
+			m0 = _mm_load_ps(&h[8 * n + 0]);
+			m1 = _mm_load_ps(&h[8 * n + 4]);
+			m2 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+
+			/* Load (unaligned) input data */
+			m0 = _mm_loadu_ps(&x[2 * i + 8 * n + 0]);
+			m1 = _mm_loadu_ps(&x[2 * i + 8 * n + 4]);
+			m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+			m5 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+
+			/* Quad multiply */
+			m0 = _mm_mul_ps(m2, m4);
+			m1 = _mm_mul_ps(m2, m5);
+
+			/* Accumulate */
+			m6 = _mm_add_ps(m6, m0);
+			m7 = _mm_add_ps(m7, m1);
+		}
+
+		m0 = _mm_hadd_ps(m6, m7);
+		m0 = _mm_hadd_ps(m0, m0);
+
+		_mm_store_ss(&y[2 * i + 0], m0);
+		m0 = _mm_shuffle_ps(m0, m0, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m0);
+	}
+}
+
+/* 4*N-tap SSE complex-complex convolution */
+static void sse_conv_cmplx_4n(const float *x,
+			      const float *h,
+			      float *y,
+			      int h_len, int len)
+{
+	__m128 m0, m1, m2, m3, m4, m5, m6, m7;
+
+	for (int i = 0; i < len; i++) {
+		/* Zero */
+		m6 = _mm_setzero_ps();
+		m7 = _mm_setzero_ps();
+
+		for (int n = 0; n < h_len / 4; n++) {
+			/* Load (aligned) filter taps */
+			m0 = _mm_load_ps(&h[8 * n + 0]);
+			m1 = _mm_load_ps(&h[8 * n + 4]);
+			m2 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+			m3 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+
+			/* Load (unaligned) input data */
+			m0 = _mm_loadu_ps(&x[2 * i + 8 * n + 0]);
+			m1 = _mm_loadu_ps(&x[2 * i + 8 * n + 4]);
+			m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+			m5 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+
+			/* Quad multiply */
+			m0 = _mm_mul_ps(m2, m4);
+			m1 = _mm_mul_ps(m3, m5);
+
+			m2 = _mm_mul_ps(m2, m5);
+			m3 = _mm_mul_ps(m3, m4);
+
+			/* Sum */
+			m0 = _mm_sub_ps(m0, m1);
+			m2 = _mm_add_ps(m2, m3);
+
+			/* Accumulate */
+			m6 = _mm_add_ps(m6, m0);
+			m7 = _mm_add_ps(m7, m2);
+		}
+
+		m0 = _mm_hadd_ps(m6, m7);
+		m0 = _mm_hadd_ps(m0, m0);
+
+		_mm_store_ss(&y[2 * i + 0], m0);
+		m0 = _mm_shuffle_ps(m0, m0, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m0);
+	}
+}
+
+/* 8*N-tap SSE complex-complex convolution */
+static void sse_conv_cmplx_8n(const float *x,
+			      const float *h,
+			      float *y,
+			      int h_len, int len)
+{
+	__m128 m0, m1, m2, m3, m4, m5, m6, m7;
+	__m128 m8, m9, m10, m11, m12, m13, m14, m15;
+
+	for (int i = 0; i < len; i++) {
+		/* Zero */
+		m12 = _mm_setzero_ps();
+		m13 = _mm_setzero_ps();
+		m14 = _mm_setzero_ps();
+		m15 = _mm_setzero_ps();
+
+		for (int n = 0; n < h_len / 8; n++) {
+			/* Load (aligned) filter taps */
+			m0 = _mm_load_ps(&h[16 * n + 0]);
+			m1 = _mm_load_ps(&h[16 * n + 4]);
+			m2 = _mm_load_ps(&h[16 * n + 8]);
+			m3 = _mm_load_ps(&h[16 * n + 12]);
+
+			m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+			m5 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+			m6 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+			m7 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+
+			/* Load (unaligned) input data */
+			m0 = _mm_loadu_ps(&x[2 * i + 16 * n + 0]);
+			m1 = _mm_loadu_ps(&x[2 * i + 16 * n + 4]);
+			m2 = _mm_loadu_ps(&x[2 * i + 16 * n + 8]);
+			m3 = _mm_loadu_ps(&x[2 * i + 16 * n + 12]);
+
+			m8  = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
+			m9  = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
+			m10 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
+			m11 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
+
+			/* Quad multiply */
+			m0 = _mm_mul_ps(m4, m8);
+			m1 = _mm_mul_ps(m5, m9);
+			m2 = _mm_mul_ps(m6, m10);
+			m3 = _mm_mul_ps(m7, m11);
+
+			m4 = _mm_mul_ps(m4, m9);
+			m5 = _mm_mul_ps(m5, m8);
+			m6 = _mm_mul_ps(m6, m11);
+			m7 = _mm_mul_ps(m7, m10);
+
+			/* Sum */
+			m0 = _mm_sub_ps(m0, m1);
+			m2 = _mm_sub_ps(m2, m3);
+			m4 = _mm_add_ps(m4, m5);
+			m6 = _mm_add_ps(m6, m7);
+
+			/* Accumulate */
+			m12 = _mm_add_ps(m12, m0);
+			m13 = _mm_add_ps(m13, m2);
+			m14 = _mm_add_ps(m14, m4);
+			m15 = _mm_add_ps(m15, m6);
+		}
+
+		m0 = _mm_add_ps(m12, m13);
+		m1 = _mm_add_ps(m14, m15);
+		m2 = _mm_hadd_ps(m0, m1);
+		m2 = _mm_hadd_ps(m2, m2);
+
+		_mm_store_ss(&y[2 * i + 0], m2);
+		m2 = _mm_shuffle_ps(m2, m2, _MM_SHUFFLE(0, 3, 2, 1));
+		_mm_store_ss(&y[2 * i + 1], m2);
+	}
+}
+#endif
+
+/* API: Aligned complex-real */
+int convolve_real(const float *x, int x_len,
+		  const float *h, int h_len,
+		  float *y, int y_len,
+		  int start, int len,
+		  int step, int offset)
+{
+	void (*conv_func)(const float *, const float *,
+			  float *, int) = NULL;
+	void (*conv_func_n)(const float *, const float *,
+			    float *, int, int) = NULL;
+
+	if (bounds_check(x_len, h_len, y_len, start, len, step) < 0)
+		return -1;
+
+	memset(y, 0, len * 2 * sizeof(float));
+
+#ifdef HAVE_SSE3
+	if (step <= 4) {
+		switch (h_len) {
+		case 4:
+			conv_func = sse_conv_real4;
+			break;
+		case 8:
+			conv_func = sse_conv_real8;
+			break;
+		case 12:
+			conv_func = sse_conv_real12;
+			break;
+		case 16:
+			conv_func = sse_conv_real16;
+			break;
+		case 20:
+			conv_func = sse_conv_real20;
+			break;
+		default:
+			if (!(h_len % 4))
+				conv_func_n = sse_conv_real4n;
+		}
+	}
+#endif
+	if (conv_func) {
+		conv_func(&x[2 * (-(h_len - 1) + start)],
+			  h, y, len);
+	} else if (conv_func_n) {
+		conv_func_n(&x[2 * (-(h_len - 1) + start)],
+			    h, y, h_len, len);
+	} else {
+		_base_convolve_real(x, x_len,
+				    h, h_len,
+				    y, y_len,
+				    start, len, step, offset);
+	}
+
+	return len;
+}
+
+/* API: Aligned complex-complex */
+int convolve_complex(const float *x, int x_len,
+		     const float *h, int h_len,
+		     float *y, int y_len,
+		     int start, int len,
+		     int step, int offset)
+{
+	void (*conv_func)(const float *, const float *,
+			  float *, int, int) = NULL;
+
+	if (bounds_check(x_len, h_len, y_len, start, len, step) < 0)
+		return -1;
+
+	memset(y, 0, len * 2 * sizeof(float));
+
+#ifdef HAVE_SSE3
+	if (step <= 4) {
+		if (!(h_len % 8))
+			conv_func = sse_conv_cmplx_8n;
+		else if (!(h_len % 4))
+			conv_func = sse_conv_cmplx_4n;
+	}
+#endif
+	if (conv_func) {
+		conv_func(&x[2 * (-(h_len - 1) + start)],
+			  h, y, h_len, len);
+	} else {
+		_base_convolve_complex(x, x_len,
+				       h, h_len,
+				       y, y_len,
+				       start, len, step, offset);
+	}
+
+	return len;
+}

config/ax_check_compile_flag.m4

@@ -0,0 +1,72 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
+#
+# DESCRIPTION
+#
+#   Check whether the given FLAG works with the current language's compiler
+#   or gives an error.  (Warnings, however, are ignored)
+#
+#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
+#   success/failure.
+#
+#   If EXTRA-FLAGS is defined, it is added to the current language's default
+#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
+#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
+#   force the compiler to issue an error when a bad flag is given.
+#
+#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
+#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 2
+
+AC_DEFUN([AX_CHECK_COMPILE_FLAG],
+[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
+  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+    [AS_VAR_SET(CACHEVAR,[yes])],
+    [AS_VAR_SET(CACHEVAR,[no])])
+  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
+AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+  [m4_default([$2], :)],
+  [m4_default([$3], :)])
+AS_VAR_POPDEF([CACHEVAR])dnl
+])dnl AX_CHECK_COMPILE_FLAGS

config/ax_ext.m4

@@ -0,0 +1,221 @@
+# ===========================================================================
+#          http://www.gnu.org/software/autoconf-archive/ax_ext.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_EXT
+#
+# DESCRIPTION
+#
+#   Find supported SIMD extensions by requesting cpuid. When an SIMD
+#   extension is found, the -m"simdextensionname" is added to SIMD_FLAGS if
+#   compiler supports it. For example, if "sse2" is available, then "-msse2"
+#   is added to SIMD_FLAGS.
+#
+#   This macro calls:
+#
+#     AC_SUBST(SIMD_FLAGS)
+#
+#   And defines:
+#
+#     HAVE_MMX / HAVE_SSE / HAVE_SSE2 / HAVE_SSE3 / HAVE_SSSE3 / HAVE_SSE4.1 / HAVE_SSE4.2 / HAVE_AVX
+#
+# LICENSE
+#
+#   Copyright (c) 2007 Christophe Tournayre <turn3r@users.sourceforge.net>
+#   Copyright (c) 2013 Michael Petch <mpetch@capp-sysware.com>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 12
+
+AC_DEFUN([AX_EXT],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  case $host_cpu in
+    i[[3456]]86*|x86_64*|amd64*)
+
+      AC_REQUIRE([AX_GCC_X86_CPUID])
+      AC_REQUIRE([AX_GCC_X86_AVX_XGETBV])
+
+      AX_GCC_X86_CPUID(0x00000001)
+      ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3`
+      edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4`
+
+      AC_CACHE_CHECK([whether mmx is supported], [ax_cv_have_mmx_ext],
+      [
+        ax_cv_have_mmx_ext=no
+        if test "$((0x$edx>>23&0x01))" = 1; then
+          ax_cv_have_mmx_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse is supported], [ax_cv_have_sse_ext],
+      [
+        ax_cv_have_sse_ext=no
+        if test "$((0x$edx>>25&0x01))" = 1; then
+          ax_cv_have_sse_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse2 is supported], [ax_cv_have_sse2_ext],
+      [
+        ax_cv_have_sse2_ext=no
+        if test "$((0x$edx>>26&0x01))" = 1; then
+          ax_cv_have_sse2_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse3 is supported], [ax_cv_have_sse3_ext],
+      [
+        ax_cv_have_sse3_ext=no
+        if test "$((0x$ecx&0x01))" = 1; then
+          ax_cv_have_sse3_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether ssse3 is supported], [ax_cv_have_ssse3_ext],
+      [
+        ax_cv_have_ssse3_ext=no
+        if test "$((0x$ecx>>9&0x01))" = 1; then
+          ax_cv_have_ssse3_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse4.1 is supported], [ax_cv_have_sse41_ext],
+      [
+        ax_cv_have_sse41_ext=no
+        if test "$((0x$ecx>>19&0x01))" = 1; then
+          ax_cv_have_sse41_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse4.2 is supported], [ax_cv_have_sse42_ext],
+      [
+        ax_cv_have_sse42_ext=no
+        if test "$((0x$ecx>>20&0x01))" = 1; then
+          ax_cv_have_sse42_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether avx is supported by processor], [ax_cv_have_avx_cpu_ext],
+      [
+        ax_cv_have_avx_cpu_ext=no
+        if test "$((0x$ecx>>28&0x01))" = 1; then
+          ax_cv_have_avx_cpu_ext=yes
+        fi
+      ])
+
+      if test x"$ax_cv_have_avx_cpu_ext" = x"yes"; then
+        AX_GCC_X86_AVX_XGETBV(0x00000000)
+
+        xgetbv_eax="0"
+        if test x"$ax_cv_gcc_x86_avx_xgetbv_0x00000000" != x"unknown"; then
+          xgetbv_eax=`echo $ax_cv_gcc_x86_avx_xgetbv_0x00000000 | cut -d ":" -f 1`
+        fi
+
+        AC_CACHE_CHECK([whether avx is supported by operating system], [ax_cv_have_avx_ext],
+        [
+          ax_cv_have_avx_ext=no
+
+          if test "$((0x$ecx>>27&0x01))" = 1; then
+            if test "$((0x$xgetbv_eax&0x6))" = 6; then
+              ax_cv_have_avx_ext=yes
+            fi
+          fi
+        ])
+        if test x"$ax_cv_have_avx_ext" = x"no"; then
+          AC_MSG_WARN([Your processor supports AVX, but your operating system doesn't])
+        fi
+      fi
+
+      if test "$ax_cv_have_mmx_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-mmmx, ax_cv_support_mmx_ext=yes, [])
+        if test x"$ax_cv_support_mmx_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mmmx"
+          AC_DEFINE(HAVE_MMX,,[Support mmx instructions])
+        else
+          AC_MSG_WARN([Your processor supports mmx instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse, ax_cv_support_sse_ext=yes, [])
+        if test x"$ax_cv_support_sse_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse"
+          AC_DEFINE(HAVE_SSE,,[Support SSE (Streaming SIMD Extensions) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse2_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse2, ax_cv_support_sse2_ext=yes, [])
+        if test x"$ax_cv_support_sse2_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse2"
+          AC_DEFINE(HAVE_SSE2,,[Support SSE2 (Streaming SIMD Extensions 2) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse2 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse3_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse3, ax_cv_support_sse3_ext=yes, [])
+        if test x"$ax_cv_support_sse3_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse3"
+          AC_DEFINE(HAVE_SSE3,,[Support SSE3 (Streaming SIMD Extensions 3) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse3 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_ssse3_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-mssse3, ax_cv_support_ssse3_ext=yes, [])
+        if test x"$ax_cv_support_ssse3_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mssse3"
+          AC_DEFINE(HAVE_SSSE3,,[Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions])
+        else
+          AC_MSG_WARN([Your processor supports ssse3 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse41_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse4.1, ax_cv_support_sse41_ext=yes, [])
+        if test x"$ax_cv_support_sse41_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse4.1"
+          AC_DEFINE(HAVE_SSE4_1,,[Support SSSE4.1 (Streaming SIMD Extensions 4.1) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse4.1 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse42_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse4.2, ax_cv_support_sse42_ext=yes, [])
+        if test x"$ax_cv_support_sse42_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse4.2"
+          AC_DEFINE(HAVE_SSE4_2,,[Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse4.2 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_avx_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-mavx, ax_cv_support_avx_ext=yes, [])
+        if test x"$ax_cv_support_avx_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mavx"
+          AC_DEFINE(HAVE_AVX,,[Support AVX (Advanced Vector Extensions) instructions])
+        else
+          AC_MSG_WARN([Your processor supports avx instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+  ;;
+  esac
+
+  AC_SUBST(SIMD_FLAGS)
+])

config/ax_gcc_x86_avx_xgetbv.m4

@@ -0,0 +1,79 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_gcc_x86_avx_xgetbv.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_GCC_X86_AVX_XGETBV
+#
+# DESCRIPTION
+#
+#   On later x86 processors with AVX SIMD support, with gcc or a compiler
+#   that has a compatible syntax for inline assembly instructions, run a
+#   small program that executes the xgetbv instruction with input OP. This
+#   can be used to detect if the OS supports AVX instruction usage.
+#
+#   On output, the values of the eax and edx registers are stored as
+#   hexadecimal strings as "eax:edx" in the cache variable
+#   ax_cv_gcc_x86_avx_xgetbv.
+#
+#   If the xgetbv instruction fails (because you are running a
+#   cross-compiler, or because you are not using gcc, or because you are on
+#   a processor that doesn't have this instruction),
+#   ax_cv_gcc_x86_avx_xgetbv_OP is set to the string "unknown".
+#
+#   This macro mainly exists to be used in AX_EXT.
+#
+# LICENSE
+#
+#   Copyright (c) 2013 Michael Petch <mpetch@capp-sysware.com>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 1
+
+AC_DEFUN([AX_GCC_X86_AVX_XGETBV],
+[AC_REQUIRE([AC_PROG_CC])
+AC_LANG_PUSH([C])
+AC_CACHE_CHECK(for x86-AVX xgetbv $1 output, ax_cv_gcc_x86_avx_xgetbv_$1,
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [
+     int op = $1, eax, edx;
+     FILE *f;
+      /* Opcodes for xgetbv */
+      __asm__(".byte 0x0f, 0x01, 0xd0"
+        : "=a" (eax), "=d" (edx)
+        : "c" (op));
+     f = fopen("conftest_xgetbv", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x\n", eax, edx);
+     fclose(f);
+     return 0;
+])],
+     [ax_cv_gcc_x86_avx_xgetbv_$1=`cat conftest_xgetbv`; rm -f conftest_xgetbv],
+     [ax_cv_gcc_x86_avx_xgetbv_$1=unknown; rm -f conftest_xgetbv],
+     [ax_cv_gcc_x86_avx_xgetbv_$1=unknown])])
+AC_LANG_POP([C])
+])

config/ax_gcc_x86_cpuid.m4

@@ -0,0 +1,79 @@
+# ===========================================================================
+#     http://www.gnu.org/software/autoconf-archive/ax_gcc_x86_cpuid.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_GCC_X86_CPUID(OP)
+#
+# DESCRIPTION
+#
+#   On Pentium and later x86 processors, with gcc or a compiler that has a
+#   compatible syntax for inline assembly instructions, run a small program
+#   that executes the cpuid instruction with input OP. This can be used to
+#   detect the CPU type.
+#
+#   On output, the values of the eax, ebx, ecx, and edx registers are stored
+#   as hexadecimal strings as "eax:ebx:ecx:edx" in the cache variable
+#   ax_cv_gcc_x86_cpuid_OP.
+#
+#   If the cpuid instruction fails (because you are running a
+#   cross-compiler, or because you are not using gcc, or because you are on
+#   a processor that doesn't have this instruction), ax_cv_gcc_x86_cpuid_OP
+#   is set to the string "unknown".
+#
+#   This macro mainly exists to be used in AX_GCC_ARCHFLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
+#   Copyright (c) 2008 Matteo Frigo
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 7
+
+AC_DEFUN([AX_GCC_X86_CPUID],
+[AC_REQUIRE([AC_PROG_CC])
+AC_LANG_PUSH([C])
+AC_CACHE_CHECK(for x86 cpuid $1 output, ax_cv_gcc_x86_cpuid_$1,
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [
+     int op = $1, eax, ebx, ecx, edx;
+     FILE *f;
+      __asm__("cpuid"
+        : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
+        : "a" (op));
+     f = fopen("conftest_cpuid", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x:%x:%x\n", eax, ebx, ecx, edx);
+     fclose(f);
+     return 0;
+])],
+     [ax_cv_gcc_x86_cpuid_$1=`cat conftest_cpuid`; rm -f conftest_cpuid],
+     [ax_cv_gcc_x86_cpuid_$1=unknown; rm -f conftest_cpuid],
+     [ax_cv_gcc_x86_cpuid_$1=unknown])])
+AC_LANG_POP([C])
+])

configure.ac

@@ -22,13 +22,14 @@ AC_INIT(openbts,P2.8TRUNK)
 AC_PREREQ(2.57)
 AC_CONFIG_SRCDIR([Transceiver52M/Makefile.am])
 AC_CONFIG_AUX_DIR([.])	
+AC_CONFIG_MACRO_DIR([config])
 AM_CONFIG_HEADER(config.h)
 
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
 AC_CANONICAL_TARGET
 
-AM_INIT_AUTOMAKE
+AM_INIT_AUTOMAKE([subdir-objects])
 
 dnl Linux kernel KBuild style compile messages
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
@@ -62,53 +63,60 @@ AC_ARG_WITH(usrp1, [
         [enable USRP1 gnuradio based transceiver])
 ])
 
-AC_ARG_WITH(uhd, [
-    AS_HELP_STRING([--with-uhd],
-        [enable UHD based transceiver])
-])
-
 AC_ARG_WITH(singledb, [
     AS_HELP_STRING([--with-singledb],
         [enable single daughterboard use on USRP1])
 ])
 
-AC_ARG_WITH(extref, [
-    AS_HELP_STRING([--with-extref],
-        [enable external reference on UHD devices])
+AC_ARG_WITH(neon, [
+    AS_HELP_STRING([--with-neon],
+        [enable ARM NEON support])
+])
+
+AC_ARG_WITH(neon-vfpv4, [
+    AS_HELP_STRING([--with-neon-vfpv4],
+        [enable ARM NEON FMA support])
+])
+
+AC_ARG_WITH(sse, [
+    AS_HELP_STRING([--with-sse],
+        [enable x86 SSE support (default)])
+])
+
+AS_IF([test "x$with_neon" = "xyes"], [
+    AC_DEFINE(HAVE_NEON, 1, Support ARM NEON)
+])
+
+AS_IF([test "x$with_neon_vfpv4" = "xyes"], [
+    AC_DEFINE(HAVE_NEON, 1, Support ARM NEON)
+    AC_DEFINE(HAVE_NEON_FMA, 1, Support ARM NEON with FMA)
 ])
 
 AS_IF([test "x$with_usrp1" = "xyes"], [
-    # Defines USRP_CFLAGS, USRP_INCLUDEDIR, and USRP_LIBS
-    PKG_CHECK_MODULES(USRP, usrp > 3.1)
-    # Check whether we have libusrp >= 3.2
-    PKG_CHECK_EXISTS(usrp >= 3.2, libusrp_3_2=yes, libusrp_3_2=no)
-    if test "x$libusrp_3_2" = "xyes";then
-        AC_DEFINE(HAVE_LIBUSRP_3_2, 1, Define to 1 if you have libusrp >= 3.2)
-    fi
-    # Check whether we have libusrp >= 3.3
-    PKG_CHECK_EXISTS(usrp >= 3.3, libusrp_3_3=yes, libusrp_3_3=no)
-    if test "x$libusrp_3_3" = "xyes";then
-        AC_DEFINE(HAVE_LIBUSRP_3_3, 1, Define to 1 if you have libusrp >= 3.3)
-    fi
+    PKG_CHECK_MODULES(USRP, usrp >= 3.3)
 ])
 
-AS_IF([test "x$with_uhd" = "xyes"],[
-    PKG_CHECK_MODULES(UHD, uhd >= 003.004.000)
-    AC_DEFINE(USE_UHD, 1, Define to 1 if using UHD)
-])
-
-AS_IF([test "x$with_extref" = "xyes"], [
-    AC_DEFINE(EXTREF, 1, Define to 1 for external reference)
+AS_IF([test "x$with_usrp1" != "xyes"],[
+    PKG_CHECK_MODULES(UHD, uhd >= 003.009,
+        [AC_DEFINE(USE_UHD_3_9, 1, UHD version 3.9.0 or higher)],
+        [PKG_CHECK_MODULES(UHD, uhd >= 003.005.004)]
+    )
+    AC_DEFINE(USE_UHD, 1, All UHD versions)
 ])
 
 AS_IF([test "x$with_singledb" = "xyes"], [
     AC_DEFINE(SINGLEDB, 1, Define to 1 for single daughterboard)
 ])
 
-AM_CONDITIONAL(UHD, [test "x$with_uhd" = "xyes"])
-AM_CONDITIONAL(USRP1, [test "x$with_usrp1" = "xyes"])
+# Find and define supported SIMD extensions
+AS_IF([test "x$with_sse" != "xno"], [
+    AX_EXT
+])
+
+AM_CONDITIONAL(USRP1, [test "x$with_usrp1" = "xyes"])
+AM_CONDITIONAL(ARCH_ARM, [test "x$with_neon" = "xyes" || test "x$with_neon_vfpv4" = "xyes"])
+AM_CONDITIONAL(ARCH_ARM_A15, [test "x$with_neon_vfpv4" = "xyes"])
 
-# Defines LIBUSB_TRANSFER_CANCELLED, LIBUSB_TRANSFER_COMPLETED, LIBUSB_SUCCESS, LIBUSB_ERROR_*
 PKG_CHECK_MODULES(LIBUSB, libusb-1.0)
 
 dnl Output files
@@ -117,7 +125,9 @@ AC_CONFIG_FILES([\
     CommonLibs/Makefile \
     GSM/Makefile \
     Transceiver52M/Makefile \
+    Transceiver52M/arm/Makefile \
+    Transceiver52M/x86/Makefile \
     sqlite3/Makefile \
-]) 
+])
 
 AC_OUTPUT

debian/changelog

@@ -0,0 +1,26 @@
+osmo-trx (0.1.10~2) trusty; urgency=medium
+
+  * c88385c makefile: Fix build from an external path.
+  * 0479562 EDGE: Fix demodulation slicer input
+  * d2b0703 uhd: Correct timing alignment in 8-PSK and GMSK downlink bursts
+
+ -- Alexander Chemeris <Alexander.Chemeris@gmail.com>  Sat, 30 Apr 2016 01:57:45 +0300
+
+osmo-trx (0.1.10~1) trusty; urgency=medium
+
+  * some EDGE support in master
+  * fairwaves/rach-filler branch
+
+ -- Kirill Zakharenko <earwin@gmail.com>  Sun, 27 Mar 2016 19:37:39 +0100
+
+osmo-trx (0.1.9) trusty; urgency=medium
+
+  * Ask Ivan, really
+
+ -- Kirill Zakharenko <earwin@gmail.com>  Thu, 16 Jul 2015 12:13:46 +0000
+
+osmo-trx (0.1.8) precise; urgency=low
+
+     * Initial release (Closes: #nnnn) <nnnn is the bug number of your ITP
+
+ -- Ivan Klyuchnikov <Ivan.Kluchnikov@fairwaves.ru>  Sun, 9 Mar 2014 14:10:10 +0400

debian/compat

@@ -0,0 +1 @@
+9

debian/control

@@ -0,0 +1,24 @@
+Source: osmo-trx
+Maintainer: Ivan Klyuchnikov <ivan.kluchnikov@fairwaves.ru>
+Section: net
+Priority: optional
+Standards-Version: 3.9.3
+Build-Depends: debhelper (>= 9), autotools-dev, libdbd-sqlite3, pkg-config, dh-autoreconf, libuhd-dev, libusb-1.0-0-dev, libboost-all-dev, hardening-wrapper
+Homepage: http://openbsc.osmocom.org/trac/wiki/OsmoTRX
+Vcs-Git: git://git.osmocom.org/osmo-trx
+Vcs-Browser: http://cgit.osmocom.org/osmo-trx
+
+Package: osmo-trx
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}, libdbd-sqlite3
+Description: OsmoTRX is a software-defined radio transceiver that implements the Layer 1 physical layer of a BTS
+
+Package: osmo-trx-dbg
+Architecture: any
+Section: debug
+Priority: extra
+Depends: osmo-trx (= ${binary:Version}), ${misc:Depends}
+Description: Debug symbols for the osmo-trx
+ Make debugging possible
+
+

debian/copyright

@@ -0,0 +1,25 @@
+The Debian packaging is:
+
+    Copyright (C) 2014 Max <max.suraev@fairwaves.ru>
+
+It was downloaded from:
+
+    git://git.osmocom.org/osmo-trx
+
+Upstream Authors:
+
+    Thomas Tsou <tom@tsou.cc>
+    David A. Burgess <dburgess@kestrelsp.com>
+    Harvind S. Samra <hssamra@kestrelsp.com>
+    Raffi Sevlian <raffisev@gmail.com>
+
+Copyright:
+
+     Copyright (C) 2012-2013 Thomas Tsou <tom@tsou.cc>
+     Copyright (C) 2011 Range Networks, Inc.
+     Copyright (C) 2008-2011 Free Software Foundation, Inc.
+
+License:
+
+    GNU Affero General Public License, Version 3
+

debian/osmo-trx.install

@@ -0,0 +1 @@
+/usr/bin/osmo-trx

debian/rules

@@ -0,0 +1,15 @@
+#!/usr/bin/make -f
+
+DEB_BUILD_HARDENING=1
+
+%:
+	dh $@ --with autoreconf
+
+override_dh_auto_configure:
+	dh_auto_configure -- --without-sse CFLAGS="-DHAVE_SSE3 -march=atom -mtune=atom -O2" CXXFLAGS="-DHAVE_SSE3 -march=atom -mtune=atom -O2"
+
+override_dh_shlibdeps:
+	dh_shlibdeps --dpkg-shlibdeps-params=--ignore-missing-info
+
+override_dh_strip:
+	dh_strip --dbg-package=osmo-trx-dbg

debian/source/format

@@ -0,0 +1 @@
+3.0 (native)

utils/clockdump.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+sudo tcpdump -i lo0 -A udp port 5700
+