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3e113438b1
One reason for the circular deps is that common_types.h is a historical dumping ground for various structs and defines that are believed to be generally useful. I tried moving things out that did not appear to be used downstream (StreamCounters, RtpCounters etc) and moved the things that seemed used (RtpHeader + supporting structs) to a new file api/rtp_headers.h. This makes their place in the api more clear while moving out the things that don't belong in the API in the first place. I had to extract out typedefs.h from webrtc_common to resolve another circular dependency. I believe checks includes typedefs, but common depends on checks. Bug: webrtc:7745 Change-Id: I725d49616b1ec0cdc8b74be7c078f7a4d46f084b Reviewed-on: https://webrtc-review.googlesource.com/33001 Commit-Queue: Patrik Höglund <phoglund@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21295}
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "call/rtcp_demuxer.h"
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#include "api/rtp_headers.h"
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#include "call/rtcp_packet_sink_interface.h"
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#include "call/rtp_rtcp_demuxer_helper.h"
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#include "common_types.h" // NOLINT(build/include)
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#include "rtc_base/checks.h"
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namespace webrtc {
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RtcpDemuxer::RtcpDemuxer() = default;
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RtcpDemuxer::~RtcpDemuxer() {
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RTC_DCHECK(ssrc_sinks_.empty());
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RTC_DCHECK(rsid_sinks_.empty());
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RTC_DCHECK(broadcast_sinks_.empty());
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}
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void RtcpDemuxer::AddSink(uint32_t sender_ssrc, RtcpPacketSinkInterface* sink) {
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RTC_DCHECK(sink);
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RTC_DCHECK(!ContainerHasKey(broadcast_sinks_, sink));
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RTC_DCHECK(!MultimapAssociationExists(ssrc_sinks_, sender_ssrc, sink));
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ssrc_sinks_.emplace(sender_ssrc, sink);
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}
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void RtcpDemuxer::AddSink(const std::string& rsid,
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RtcpPacketSinkInterface* sink) {
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RTC_DCHECK(StreamId::IsLegalName(rsid));
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RTC_DCHECK(sink);
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RTC_DCHECK(!ContainerHasKey(broadcast_sinks_, sink));
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RTC_DCHECK(!MultimapAssociationExists(rsid_sinks_, rsid, sink));
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rsid_sinks_.emplace(rsid, sink);
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}
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void RtcpDemuxer::AddBroadcastSink(RtcpPacketSinkInterface* sink) {
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RTC_DCHECK(sink);
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RTC_DCHECK(!MultimapHasValue(ssrc_sinks_, sink));
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RTC_DCHECK(!MultimapHasValue(rsid_sinks_, sink));
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RTC_DCHECK(!ContainerHasKey(broadcast_sinks_, sink));
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broadcast_sinks_.push_back(sink);
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}
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void RtcpDemuxer::RemoveSink(const RtcpPacketSinkInterface* sink) {
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RTC_DCHECK(sink);
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size_t removal_count = RemoveFromMultimapByValue(&ssrc_sinks_, sink) +
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RemoveFromMultimapByValue(&rsid_sinks_, sink);
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RTC_DCHECK_GT(removal_count, 0);
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}
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void RtcpDemuxer::RemoveBroadcastSink(const RtcpPacketSinkInterface* sink) {
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RTC_DCHECK(sink);
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auto it = std::find(broadcast_sinks_.begin(), broadcast_sinks_.end(), sink);
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RTC_DCHECK(it != broadcast_sinks_.end());
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broadcast_sinks_.erase(it);
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}
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void RtcpDemuxer::OnRtcpPacket(rtc::ArrayView<const uint8_t> packet) {
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// Perform sender-SSRC-based demuxing for packets with a sender-SSRC.
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rtc::Optional<uint32_t> sender_ssrc = ParseRtcpPacketSenderSsrc(packet);
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if (sender_ssrc) {
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auto it_range = ssrc_sinks_.equal_range(*sender_ssrc);
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for (auto it = it_range.first; it != it_range.second; ++it) {
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it->second->OnRtcpPacket(packet);
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}
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}
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// All packets, even those without a sender-SSRC, are broadcast to sinks
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// which listen to broadcasts.
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for (RtcpPacketSinkInterface* sink : broadcast_sinks_) {
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sink->OnRtcpPacket(packet);
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}
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}
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void RtcpDemuxer::OnSsrcBoundToRsid(const std::string& rsid, uint32_t ssrc) {
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// Record the new SSRC association for all of the sinks that were associated
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// with the RSID.
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auto it_range = rsid_sinks_.equal_range(rsid);
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for (auto it = it_range.first; it != it_range.second; ++it) {
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RtcpPacketSinkInterface* sink = it->second;
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// Watch out for pre-existing SSRC-based associations.
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if (!MultimapAssociationExists(ssrc_sinks_, ssrc, sink)) {
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AddSink(ssrc, sink);
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}
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}
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// RSIDs are uniquely associated with SSRCs; no need to keep in memory
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// the RSID-to-sink association of resolved RSIDs.
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rsid_sinks_.erase(it_range.first, it_range.second);
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}
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} // namespace webrtc
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