131 lines
5.8 KiB
C++
131 lines
5.8 KiB
C++
/*
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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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#ifndef PC_TRACK_MEDIA_INFO_MAP_H_
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#define PC_TRACK_MEDIA_INFO_MAP_H_
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include "api/media_stream_interface.h"
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#include "media/base/media_channel.h"
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#include "pc/rtp_receiver.h"
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#include "pc/rtp_sender.h"
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#include "rtc_base/ref_count.h"
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namespace webrtc {
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// Audio/video tracks and sender/receiver statistical information are associated
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// with each other based on attachments to RTP senders/receivers. This class
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// maps that relationship, in both directions, so that stats about a track can
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// be retrieved on a per-attachment basis.
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//
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// An RTP sender/receiver sends or receives media for a set of SSRCs. The media
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// comes from an audio/video track that is attached to it.
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// |[Voice/Video][Sender/Receiver]Info| has statistical information for a set of
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// SSRCs. Looking at the RTP senders and receivers uncovers the track <-> info
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// relationships, which this class does.
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class TrackMediaInfoMap {
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public:
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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>>&
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rtp_receivers);
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const cricket::VoiceMediaInfo* voice_media_info() const {
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return voice_media_info_.get();
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}
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const cricket::VideoMediaInfo* video_media_info() const {
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return video_media_info_.get();
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}
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const std::vector<cricket::VoiceSenderInfo*>* GetVoiceSenderInfos(
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const AudioTrackInterface& local_audio_track) const;
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const cricket::VoiceReceiverInfo* GetVoiceReceiverInfo(
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const AudioTrackInterface& remote_audio_track) const;
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const std::vector<cricket::VideoSenderInfo*>* GetVideoSenderInfos(
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const VideoTrackInterface& local_video_track) const;
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const cricket::VideoReceiverInfo* GetVideoReceiverInfo(
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const VideoTrackInterface& remote_video_track) const;
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const cricket::VoiceSenderInfo* GetVoiceSenderInfoBySsrc(uint32_t ssrc) const;
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const cricket::VoiceReceiverInfo* GetVoiceReceiverInfoBySsrc(
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uint32_t ssrc) const;
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const cricket::VideoSenderInfo* GetVideoSenderInfoBySsrc(uint32_t ssrc) const;
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const cricket::VideoReceiverInfo* GetVideoReceiverInfoBySsrc(
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uint32_t ssrc) const;
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rtc::scoped_refptr<AudioTrackInterface> GetAudioTrack(
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const cricket::VoiceSenderInfo& voice_sender_info) const;
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rtc::scoped_refptr<AudioTrackInterface> GetAudioTrack(
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const cricket::VoiceReceiverInfo& voice_receiver_info) const;
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rtc::scoped_refptr<VideoTrackInterface> GetVideoTrack(
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const cricket::VideoSenderInfo& video_sender_info) const;
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rtc::scoped_refptr<VideoTrackInterface> GetVideoTrack(
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const cricket::VideoReceiverInfo& video_receiver_info) const;
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// TODO(hta): Remove this function, and redesign the callers not to need it.
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// It is not going to work if a track is attached multiple times, and
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// it is not going to work if a received track is attached as a sending
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// track (loopback).
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absl::optional<int> GetAttachmentIdByTrack(
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const MediaStreamTrackInterface* track) const;
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private:
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absl::optional<std::string> voice_mid_;
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absl::optional<std::string> video_mid_;
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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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// These maps map tracks (identified by a pointer) to their corresponding info
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// object of the correct kind. One track can map to multiple info objects.
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std::map<const AudioTrackInterface*, std::vector<cricket::VoiceSenderInfo*>>
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voice_infos_by_local_track_;
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std::map<const AudioTrackInterface*, cricket::VoiceReceiverInfo*>
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voice_info_by_remote_track_;
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std::map<const VideoTrackInterface*, std::vector<cricket::VideoSenderInfo*>>
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video_infos_by_local_track_;
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std::map<const VideoTrackInterface*, cricket::VideoReceiverInfo*>
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video_info_by_remote_track_;
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// These maps map info objects to their corresponding tracks. They are always
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// the inverse of the maps above. One info object always maps to only one
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// track.
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std::map<const cricket::VoiceSenderInfo*,
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rtc::scoped_refptr<AudioTrackInterface>>
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audio_track_by_sender_info_;
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std::map<const cricket::VoiceReceiverInfo*,
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rtc::scoped_refptr<AudioTrackInterface>>
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audio_track_by_receiver_info_;
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std::map<const cricket::VideoSenderInfo*,
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rtc::scoped_refptr<VideoTrackInterface>>
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video_track_by_sender_info_;
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std::map<const cricket::VideoReceiverInfo*,
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rtc::scoped_refptr<VideoTrackInterface>>
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video_track_by_receiver_info_;
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// Map of tracks to attachment IDs.
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// Necessary because senders and receivers live on the signaling thread,
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// but the attachment IDs are needed while building stats on the networking
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// thread, so we can't look them up in the senders/receivers without
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// thread jumping.
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std::map<const MediaStreamTrackInterface*, int> attachment_id_by_track_;
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// These maps map SSRCs to the corresponding voice or video info objects.
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std::map<uint32_t, cricket::VoiceSenderInfo*> voice_info_by_sender_ssrc_;
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std::map<uint32_t, cricket::VoiceReceiverInfo*> voice_info_by_receiver_ssrc_;
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std::map<uint32_t, cricket::VideoSenderInfo*> video_info_by_sender_ssrc_;
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std::map<uint32_t, cricket::VideoReceiverInfo*> video_info_by_receiver_ssrc_;
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};
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} // namespace webrtc
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#endif // PC_TRACK_MEDIA_INFO_MAP_H_
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