116 lines
4.8 KiB
C++
116 lines
4.8 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 <stdint.h>
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#include <map>
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#include <memory>
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#include <optional>
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#include <string>
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#include <vector>
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#include "api/array_view.h"
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#include "api/media_stream_interface.h"
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#include "api/scoped_refptr.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 so that "infos" can be obtained from SSRCs and tracks
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// can be obtained from "infos".
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class TrackMediaInfoMap {
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public:
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TrackMediaInfoMap();
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// Takes ownership of the "infos". Does not affect the lifetime of the senders
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// or receivers, but TrackMediaInfoMap will keep their associated tracks alive
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// through reference counting until the map is destroyed.
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void Initialize(
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std::optional<cricket::VoiceMediaInfo> voice_media_info,
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std::optional<cricket::VideoMediaInfo> video_media_info,
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rtc::ArrayView<rtc::scoped_refptr<RtpSenderInternal>> rtp_senders,
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rtc::ArrayView<rtc::scoped_refptr<RtpReceiverInternal>> rtp_receivers);
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const std::optional<cricket::VoiceMediaInfo>& voice_media_info() const {
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RTC_DCHECK(is_initialized_);
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return voice_media_info_;
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}
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const std::optional<cricket::VideoMediaInfo>& video_media_info() const {
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RTC_DCHECK(is_initialized_);
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return video_media_info_;
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}
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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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std::optional<int> GetAttachmentIdByTrack(
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const MediaStreamTrackInterface* track) const;
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private:
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bool is_initialized_ = false;
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std::optional<cricket::VoiceMediaInfo> voice_media_info_;
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std::optional<cricket::VideoMediaInfo> video_media_info_;
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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. The use of scoped_refptr<> here ensures the tracks outlive
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// TrackMediaInfoMap.
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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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