Repo created

TMessagesProj/jni/voip/webrtc/pc/track_media_info_map.h

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+/*
+ *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef PC_TRACK_MEDIA_INFO_MAP_H_
+#define PC_TRACK_MEDIA_INFO_MAP_H_
+
+#include <stdint.h>
+
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/media_stream_interface.h"
+#include "api/scoped_refptr.h"
+#include "media/base/media_channel.h"
+#include "pc/rtp_receiver.h"
+#include "pc/rtp_sender.h"
+#include "rtc_base/ref_count.h"
+
+namespace webrtc {
+
+// Audio/video tracks and sender/receiver statistical information are associated
+// with each other based on attachments to RTP senders/receivers. This class
+// maps that relationship so that "infos" can be obtained from SSRCs and tracks
+// can be obtained from "infos".
+class TrackMediaInfoMap {
+ public:
+  TrackMediaInfoMap();
+
+  // Takes ownership of the "infos". Does not affect the lifetime of the senders
+  // or receivers, but TrackMediaInfoMap will keep their associated tracks alive
+  // through reference counting until the map is destroyed.
+  void Initialize(
+      absl::optional<cricket::VoiceMediaInfo> voice_media_info,
+      absl::optional<cricket::VideoMediaInfo> video_media_info,
+      rtc::ArrayView<rtc::scoped_refptr<RtpSenderInternal>> rtp_senders,
+      rtc::ArrayView<rtc::scoped_refptr<RtpReceiverInternal>> rtp_receivers);
+
+  const absl::optional<cricket::VoiceMediaInfo>& voice_media_info() const {
+    RTC_DCHECK(is_initialized_);
+    return voice_media_info_;
+  }
+  const absl::optional<cricket::VideoMediaInfo>& video_media_info() const {
+    RTC_DCHECK(is_initialized_);
+    return video_media_info_;
+  }
+
+  const cricket::VoiceSenderInfo* GetVoiceSenderInfoBySsrc(uint32_t ssrc) const;
+  const cricket::VoiceReceiverInfo* GetVoiceReceiverInfoBySsrc(
+      uint32_t ssrc) const;
+  const cricket::VideoSenderInfo* GetVideoSenderInfoBySsrc(uint32_t ssrc) const;
+  const cricket::VideoReceiverInfo* GetVideoReceiverInfoBySsrc(
+      uint32_t ssrc) const;
+
+  rtc::scoped_refptr<AudioTrackInterface> GetAudioTrack(
+      const cricket::VoiceSenderInfo& voice_sender_info) const;
+  rtc::scoped_refptr<AudioTrackInterface> GetAudioTrack(
+      const cricket::VoiceReceiverInfo& voice_receiver_info) const;
+  rtc::scoped_refptr<VideoTrackInterface> GetVideoTrack(
+      const cricket::VideoSenderInfo& video_sender_info) const;
+  rtc::scoped_refptr<VideoTrackInterface> GetVideoTrack(
+      const cricket::VideoReceiverInfo& video_receiver_info) const;
+
+  // TODO(hta): Remove this function, and redesign the callers not to need it.
+  // It is not going to work if a track is attached multiple times, and
+  // it is not going to work if a received track is attached as a sending
+  // track (loopback).
+  absl::optional<int> GetAttachmentIdByTrack(
+      const MediaStreamTrackInterface* track) const;
+
+ private:
+  bool is_initialized_ = false;
+  absl::optional<cricket::VoiceMediaInfo> voice_media_info_;
+  absl::optional<cricket::VideoMediaInfo> video_media_info_;
+  // These maps map info objects to their corresponding tracks. They are always
+  // the inverse of the maps above. One info object always maps to only one
+  // track. The use of scoped_refptr<> here ensures the tracks outlive
+  // TrackMediaInfoMap.
+  std::map<const cricket::VoiceSenderInfo*,
+           rtc::scoped_refptr<AudioTrackInterface>>
+      audio_track_by_sender_info_;
+  std::map<const cricket::VoiceReceiverInfo*,
+           rtc::scoped_refptr<AudioTrackInterface>>
+      audio_track_by_receiver_info_;
+  std::map<const cricket::VideoSenderInfo*,
+           rtc::scoped_refptr<VideoTrackInterface>>
+      video_track_by_sender_info_;
+  std::map<const cricket::VideoReceiverInfo*,
+           rtc::scoped_refptr<VideoTrackInterface>>
+      video_track_by_receiver_info_;
+  // Map of tracks to attachment IDs.
+  // Necessary because senders and receivers live on the signaling thread,
+  // but the attachment IDs are needed while building stats on the networking
+  // thread, so we can't look them up in the senders/receivers without
+  // thread jumping.
+  std::map<const MediaStreamTrackInterface*, int> attachment_id_by_track_;
+  // These maps map SSRCs to the corresponding voice or video info objects.
+  std::map<uint32_t, cricket::VoiceSenderInfo*> voice_info_by_sender_ssrc_;
+  std::map<uint32_t, cricket::VoiceReceiverInfo*> voice_info_by_receiver_ssrc_;
+  std::map<uint32_t, cricket::VideoSenderInfo*> video_info_by_sender_ssrc_;
+  std::map<uint32_t, cricket::VideoReceiverInfo*> video_info_by_receiver_ssrc_;
+};
+
+}  // namespace webrtc
+
+#endif  // PC_TRACK_MEDIA_INFO_MAP_H_