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3ea3a69821
The previous logic to configure SSRC patching was over complex and confusing, with even some broken logic like "patch only once", which is not really needed. Hence, simplify the internal logic to either patch SSRC always or don't do it, based on VTY configuration. The "force SSRC" feature was added indb2d431697and further changed ine2292f3aa1, due to the need for nanoBTS to always keep the same SSRC on received packets. However, it makes no sense that is actually needed only once: if remote end changed several times, then we should keep patching in that case. This change allows getting rid of confusing applying of settings at a later time through mgcp_rtp_end_config(), which is no longer needed and can be dropped, simplifying steps during CRCX/MDCX/DLCX. Change-Id: Ib7216a775f4ad126e62b9e99aff381fd45015819
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
#pragma once
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#include <inttypes.h>
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#include <stdbool.h>
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#include <osmocom/core/socket.h>
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#include <osmocom/core/osmo_io.h>
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#include <osmocom/mgcp/mgcp.h>
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#include <osmocom/mgcp/mgcp_codec.h>
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/* 'mgcp_rtp_end': basically a wrapper around the RTP+RTCP ports */
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struct mgcp_rtp_end {
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struct mgcp_conn_rtp *conn_rtp; /* backpointer */
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/* remote IP address of the RTP socket */
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struct osmo_sockaddr addr;
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/* in network byte order */
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uint16_t rtcp_port;
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struct mgcp_rtp_codecset cset;
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/* per endpoint data */
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int frames_per_packet;
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uint32_t packet_duration_ms;
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int maximum_packet_time; /* -1: not set */
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/* are we transmitting packets (true) or dropping (false) outbound packets */
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bool output_enabled;
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/* FIXME: This parameter can be set + printed, but is nowhere used! */
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int force_output_ptime;
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/* RTP patching */
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bool force_constant_ssrc;
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/* should we perform align_rtp_timestamp_offset() (1) or not (0) */
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int force_aligned_timing;
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bool rfc5993_hr_convert;
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/* Each end has a separate socket for RTP and RTCP */
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struct osmo_io_fd *rtp;
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struct osmo_io_fd *rtcp;
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/* local UDP port number of the RTP socket; RTCP is +1 */
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int local_port;
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/* where the endpoint RTP connection binds to, set during CRCX and
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* possibly updated during MDCX */
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char local_addr[INET6_ADDRSTRLEN];
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};
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void mgcp_rtp_end_init(struct mgcp_rtp_end *end, struct mgcp_conn_rtp *conn_rtp);
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void mgcp_rtp_end_cleanup(struct mgcp_rtp_end *end);
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void mgcp_rtp_end_set_packet_duration_ms(struct mgcp_rtp_end *end, uint32_t packet_duration_ms);
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bool mgcp_rtp_end_remote_addr_available(const struct mgcp_rtp_end *rtp_end);
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void mgcp_rtp_end_free_port(struct mgcp_rtp_end *end);
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