288 lines
12 KiB
C++
288 lines
12 KiB
C++
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/*
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* Copyright 2016 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 "pc/track_media_info_map.h"
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#include <set>
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#include <string>
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#include <utility>
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#include "rtc_base/thread.h"
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namespace webrtc {
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namespace {
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template <typename K, typename V>
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V FindValueOrNull(const std::map<K, V>& map, const K& key) {
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auto it = map.find(key);
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return (it != map.end()) ? it->second : nullptr;
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}
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template <typename K, typename V>
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const V* FindAddressOrNull(const std::map<K, V>& map, const K& key) {
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auto it = map.find(key);
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return (it != map.end()) ? &it->second : nullptr;
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}
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void GetAudioAndVideoTrackBySsrc(
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const std::vector<rtc::scoped_refptr<RtpSenderInternal>>& rtp_senders,
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const std::vector<rtc::scoped_refptr<RtpReceiverInternal>>& rtp_receivers,
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std::map<uint32_t, AudioTrackInterface*>* local_audio_track_by_ssrc,
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std::map<uint32_t, VideoTrackInterface*>* local_video_track_by_ssrc,
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std::map<uint32_t, AudioTrackInterface*>* remote_audio_track_by_ssrc,
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std::map<uint32_t, VideoTrackInterface*>* remote_video_track_by_ssrc,
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AudioTrackInterface** unsignaled_audio_track,
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VideoTrackInterface** unsignaled_video_track) {
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RTC_DCHECK(local_audio_track_by_ssrc->empty());
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RTC_DCHECK(local_video_track_by_ssrc->empty());
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RTC_DCHECK(remote_audio_track_by_ssrc->empty());
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RTC_DCHECK(remote_video_track_by_ssrc->empty());
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for (const auto& rtp_sender : rtp_senders) {
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cricket::MediaType media_type = rtp_sender->media_type();
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MediaStreamTrackInterface* track = rtp_sender->track();
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if (!track) {
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continue;
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}
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// TODO(deadbeef): |ssrc| should be removed in favor of |GetParameters|.
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uint32_t ssrc = rtp_sender->ssrc();
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if (ssrc != 0) {
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if (media_type == cricket::MEDIA_TYPE_AUDIO) {
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RTC_DCHECK(local_audio_track_by_ssrc->find(ssrc) ==
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local_audio_track_by_ssrc->end());
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(*local_audio_track_by_ssrc)[ssrc] =
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static_cast<AudioTrackInterface*>(track);
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} else {
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RTC_DCHECK(local_video_track_by_ssrc->find(ssrc) ==
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local_video_track_by_ssrc->end());
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(*local_video_track_by_ssrc)[ssrc] =
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static_cast<VideoTrackInterface*>(track);
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}
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}
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}
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for (const auto& rtp_receiver : rtp_receivers) {
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cricket::MediaType media_type = rtp_receiver->media_type();
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MediaStreamTrackInterface* track = rtp_receiver->track();
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RTC_DCHECK(track);
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RtpParameters params = rtp_receiver->GetParameters();
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for (const RtpEncodingParameters& encoding : params.encodings) {
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if (!encoding.ssrc) {
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if (media_type == cricket::MEDIA_TYPE_AUDIO) {
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*unsignaled_audio_track = static_cast<AudioTrackInterface*>(track);
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} else {
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RTC_DCHECK(media_type == cricket::MEDIA_TYPE_VIDEO);
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*unsignaled_video_track = static_cast<VideoTrackInterface*>(track);
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}
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continue;
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}
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if (media_type == cricket::MEDIA_TYPE_AUDIO) {
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RTC_DCHECK(remote_audio_track_by_ssrc->find(*encoding.ssrc) ==
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remote_audio_track_by_ssrc->end());
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(*remote_audio_track_by_ssrc)[*encoding.ssrc] =
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static_cast<AudioTrackInterface*>(track);
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} else {
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RTC_DCHECK(remote_video_track_by_ssrc->find(*encoding.ssrc) ==
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remote_video_track_by_ssrc->end());
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(*remote_video_track_by_ssrc)[*encoding.ssrc] =
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static_cast<VideoTrackInterface*>(track);
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}
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}
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}
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}
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} // namespace
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TrackMediaInfoMap::TrackMediaInfoMap(
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std::unique_ptr<cricket::VoiceMediaInfo> voice_media_info,
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std::unique_ptr<cricket::VideoMediaInfo> video_media_info,
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const std::vector<rtc::scoped_refptr<RtpSenderInternal>>& rtp_senders,
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const std::vector<rtc::scoped_refptr<RtpReceiverInternal>>& rtp_receivers)
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: voice_media_info_(std::move(voice_media_info)),
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video_media_info_(std::move(video_media_info)) {
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rtc::Thread::ScopedDisallowBlockingCalls no_blocking_calls;
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std::map<uint32_t, AudioTrackInterface*> local_audio_track_by_ssrc;
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std::map<uint32_t, VideoTrackInterface*> local_video_track_by_ssrc;
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std::map<uint32_t, AudioTrackInterface*> remote_audio_track_by_ssrc;
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std::map<uint32_t, VideoTrackInterface*> remote_video_track_by_ssrc;
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AudioTrackInterface* unsignaled_audio_track = nullptr;
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VideoTrackInterface* unsignaled_video_track = nullptr;
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GetAudioAndVideoTrackBySsrc(
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rtp_senders, rtp_receivers, &local_audio_track_by_ssrc,
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&local_video_track_by_ssrc, &remote_audio_track_by_ssrc,
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&remote_video_track_by_ssrc, &unsignaled_audio_track,
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&unsignaled_video_track);
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for (const auto& sender : rtp_senders) {
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attachment_id_by_track_[sender->track()] = sender->AttachmentId();
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}
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for (const auto& receiver : rtp_receivers) {
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attachment_id_by_track_[receiver->track()] = receiver->AttachmentId();
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}
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if (voice_media_info_) {
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for (auto& sender_info : voice_media_info_->senders) {
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AudioTrackInterface* associated_track =
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FindValueOrNull(local_audio_track_by_ssrc, sender_info.ssrc());
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if (associated_track) {
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// One sender is associated with at most one track.
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// One track may be associated with multiple senders.
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audio_track_by_sender_info_[&sender_info] = associated_track;
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voice_infos_by_local_track_[associated_track].push_back(&sender_info);
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}
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if (sender_info.ssrc() == 0)
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continue; // Unconnected SSRC. bugs.webrtc.org/8673
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RTC_CHECK(voice_info_by_sender_ssrc_.count(sender_info.ssrc()) == 0)
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<< "Duplicate voice sender SSRC: " << sender_info.ssrc();
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voice_info_by_sender_ssrc_[sender_info.ssrc()] = &sender_info;
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}
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for (auto& receiver_info : voice_media_info_->receivers) {
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AudioTrackInterface* associated_track =
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FindValueOrNull(remote_audio_track_by_ssrc, receiver_info.ssrc());
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if (associated_track) {
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// One receiver is associated with at most one track, which is uniquely
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// associated with that receiver.
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audio_track_by_receiver_info_[&receiver_info] = associated_track;
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RTC_DCHECK(voice_info_by_remote_track_.find(associated_track) ==
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voice_info_by_remote_track_.end());
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voice_info_by_remote_track_[associated_track] = &receiver_info;
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} else if (unsignaled_audio_track) {
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audio_track_by_receiver_info_[&receiver_info] = unsignaled_audio_track;
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voice_info_by_remote_track_[unsignaled_audio_track] = &receiver_info;
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}
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RTC_CHECK(voice_info_by_receiver_ssrc_.count(receiver_info.ssrc()) == 0)
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<< "Duplicate voice receiver SSRC: " << receiver_info.ssrc();
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voice_info_by_receiver_ssrc_[receiver_info.ssrc()] = &receiver_info;
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}
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}
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if (video_media_info_) {
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for (auto& sender_info : video_media_info_->senders) {
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std::set<uint32_t> ssrcs;
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ssrcs.insert(sender_info.ssrc());
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for (auto& ssrc_group : sender_info.ssrc_groups) {
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for (auto ssrc : ssrc_group.ssrcs) {
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ssrcs.insert(ssrc);
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}
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}
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for (auto ssrc : ssrcs) {
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VideoTrackInterface* associated_track =
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FindValueOrNull(local_video_track_by_ssrc, ssrc);
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if (associated_track) {
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// One sender is associated with at most one track.
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// One track may be associated with multiple senders.
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video_track_by_sender_info_[&sender_info] = associated_track;
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video_infos_by_local_track_[associated_track].push_back(&sender_info);
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break;
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}
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}
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}
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for (auto& sender_info : video_media_info_->aggregated_senders) {
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if (sender_info.ssrc() == 0)
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continue; // Unconnected SSRC. bugs.webrtc.org/8673
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RTC_DCHECK(video_info_by_sender_ssrc_.count(sender_info.ssrc()) == 0)
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<< "Duplicate video sender SSRC: " << sender_info.ssrc();
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video_info_by_sender_ssrc_[sender_info.ssrc()] = &sender_info;
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VideoTrackInterface* associated_track =
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FindValueOrNull(local_video_track_by_ssrc, sender_info.ssrc());
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if (associated_track) {
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video_track_by_sender_info_[&sender_info] = associated_track;
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}
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}
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for (auto& receiver_info : video_media_info_->receivers) {
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VideoTrackInterface* associated_track =
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FindValueOrNull(remote_video_track_by_ssrc, receiver_info.ssrc());
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if (associated_track) {
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// One receiver is associated with at most one track, which is uniquely
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// associated with that receiver.
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video_track_by_receiver_info_[&receiver_info] = associated_track;
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RTC_DCHECK(video_info_by_remote_track_.find(associated_track) ==
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video_info_by_remote_track_.end());
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video_info_by_remote_track_[associated_track] = &receiver_info;
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} else if (unsignaled_video_track) {
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video_track_by_receiver_info_[&receiver_info] = unsignaled_video_track;
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video_info_by_remote_track_[unsignaled_video_track] = &receiver_info;
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}
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RTC_DCHECK(video_info_by_receiver_ssrc_.count(receiver_info.ssrc()) == 0)
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<< "Duplicate video receiver SSRC: " << receiver_info.ssrc();
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video_info_by_receiver_ssrc_[receiver_info.ssrc()] = &receiver_info;
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}
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}
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}
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const std::vector<cricket::VoiceSenderInfo*>*
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TrackMediaInfoMap::GetVoiceSenderInfos(
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const AudioTrackInterface& local_audio_track) const {
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return FindAddressOrNull(voice_infos_by_local_track_, &local_audio_track);
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}
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const cricket::VoiceReceiverInfo* TrackMediaInfoMap::GetVoiceReceiverInfo(
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const AudioTrackInterface& remote_audio_track) const {
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return FindValueOrNull(voice_info_by_remote_track_, &remote_audio_track);
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}
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const std::vector<cricket::VideoSenderInfo*>*
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TrackMediaInfoMap::GetVideoSenderInfos(
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const VideoTrackInterface& local_video_track) const {
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return FindAddressOrNull(video_infos_by_local_track_, &local_video_track);
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}
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const cricket::VideoReceiverInfo* TrackMediaInfoMap::GetVideoReceiverInfo(
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const VideoTrackInterface& remote_video_track) const {
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return FindValueOrNull(video_info_by_remote_track_, &remote_video_track);
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}
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const cricket::VoiceSenderInfo* TrackMediaInfoMap::GetVoiceSenderInfoBySsrc(
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uint32_t ssrc) const {
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return FindValueOrNull(voice_info_by_sender_ssrc_, ssrc);
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}
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const cricket::VoiceReceiverInfo* TrackMediaInfoMap::GetVoiceReceiverInfoBySsrc(
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uint32_t ssrc) const {
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return FindValueOrNull(voice_info_by_receiver_ssrc_, ssrc);
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}
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const cricket::VideoSenderInfo* TrackMediaInfoMap::GetVideoSenderInfoBySsrc(
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uint32_t ssrc) const {
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return FindValueOrNull(video_info_by_sender_ssrc_, ssrc);
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}
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const cricket::VideoReceiverInfo* TrackMediaInfoMap::GetVideoReceiverInfoBySsrc(
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uint32_t ssrc) const {
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return FindValueOrNull(video_info_by_receiver_ssrc_, ssrc);
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}
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rtc::scoped_refptr<AudioTrackInterface> TrackMediaInfoMap::GetAudioTrack(
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const cricket::VoiceSenderInfo& voice_sender_info) const {
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return FindValueOrNull(audio_track_by_sender_info_, &voice_sender_info);
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}
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rtc::scoped_refptr<AudioTrackInterface> TrackMediaInfoMap::GetAudioTrack(
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const cricket::VoiceReceiverInfo& voice_receiver_info) const {
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return FindValueOrNull(audio_track_by_receiver_info_, &voice_receiver_info);
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}
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rtc::scoped_refptr<VideoTrackInterface> TrackMediaInfoMap::GetVideoTrack(
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const cricket::VideoSenderInfo& video_sender_info) const {
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return FindValueOrNull(video_track_by_sender_info_, &video_sender_info);
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}
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rtc::scoped_refptr<VideoTrackInterface> TrackMediaInfoMap::GetVideoTrack(
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const cricket::VideoReceiverInfo& video_receiver_info) const {
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return FindValueOrNull(video_track_by_receiver_info_, &video_receiver_info);
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}
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absl::optional<int> TrackMediaInfoMap::GetAttachmentIdByTrack(
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const MediaStreamTrackInterface* track) const {
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auto it = attachment_id_by_track_.find(track);
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return it != attachment_id_by_track_.end() ? absl::optional<int>(it->second)
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: absl::nullopt;
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}
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} // namespace webrtc
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