C++ JsepTrack::GetStreamId方法代码示例

nsresult
MediaPipelineFactory::ConfigureVideoCodecMode(const JsepTrack& aTrack,
                                              VideoSessionConduit& aConduit)
{
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  RefPtr<LocalSourceStreamInfo> stream =
    mPCMedia->GetLocalStreamById(aTrack.GetStreamId());

  //get video track
  RefPtr<mozilla::dom::VideoStreamTrack> videotrack =
    stream->GetVideoTrackByTrackId(aTrack.GetTrackId());

  if (!videotrack) {
    MOZ_MTLOG(ML_ERROR, "video track not available");
    return NS_ERROR_FAILURE;
  }

  //get video source type
  RefPtr<DOMMediaStream> mediastream =
    mPCMedia->GetLocalStreamById(aTrack.GetStreamId())->GetMediaStream();

  DOMLocalMediaStream* domLocalStream = mediastream->AsDOMLocalMediaStream();
  if (!domLocalStream) {
    return NS_OK;
  }

  MediaEngineSource *engine =
    domLocalStream->GetMediaEngine(videotrack->GetTrackID());

  dom::MediaSourceEnum source = engine->GetMediaSource();
  webrtc::VideoCodecMode mode = webrtc::kRealtimeVideo;
  switch (source) {
    case dom::MediaSourceEnum::Browser:
    case dom::MediaSourceEnum::Screen:
    case dom::MediaSourceEnum::Application:
    case dom::MediaSourceEnum::Window:
      mode = webrtc::kScreensharing;
      break;

    case dom::MediaSourceEnum::Camera:
    default:
      mode = webrtc::kRealtimeVideo;
      break;
  }

  auto error = aConduit.ConfigureCodecMode(mode);
  if (error) {
    MOZ_MTLOG(ML_ERROR, "ConfigureCodecMode failed: " << error);
    return NS_ERROR_FAILURE;
  }

#endif
  return NS_OK;
}

nsresult
MediaPipelineFactory::CreateMediaPipelineSending(
    const JsepTrackPair& aTrackPair,
    const JsepTrack& aTrack,
    size_t aLevel,
    RefPtr<TransportFlow> aRtpFlow,
    RefPtr<TransportFlow> aRtcpFlow,
    nsAutoPtr<MediaPipelineFilter> aFilter,
    const RefPtr<MediaSessionConduit>& aConduit)
{
  nsresult rv;

  // This is checked earlier
  RefPtr<LocalSourceStreamInfo> stream =
      mPCMedia->GetLocalStreamById(aTrack.GetStreamId());

  // Now we have all the pieces, create the pipeline
  RefPtr<MediaPipelineTransmit> pipeline = new MediaPipelineTransmit(
      mPC->GetHandle(),
      mPC->GetMainThread().get(),
      mPC->GetSTSThread(),
      stream->GetMediaStream(),
      aTrack.GetTrackId(),
      aLevel,
      aTrack.GetMediaType() == SdpMediaSection::kVideo,
      aConduit,
      aRtpFlow,
      aRtcpFlow,
      aFilter);

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  // implement checking for peerIdentity (where failure == black/silence)
  nsIDocument* doc = mPC->GetWindow()->GetExtantDoc();
  if (doc) {
    pipeline->UpdateSinkIdentity_m(doc->NodePrincipal(),
                                   mPC->GetPeerIdentity());
  } else {
    MOZ_MTLOG(ML_ERROR, "Cannot initialize pipeline without attached doc");
    return NS_ERROR_FAILURE; // Don't remove this till we know it's safe.
  }
#endif

  rv = pipeline->Init();
  if (NS_FAILED(rv)) {
    MOZ_MTLOG(ML_ERROR, "Couldn't initialize sending pipeline");
    return rv;
  }

  rv = stream->StorePipeline(aTrack.GetTrackId(),
                             RefPtr<MediaPipeline>(pipeline));
  if (NS_FAILED(rv)) {
    MOZ_MTLOG(ML_ERROR, "Couldn't store receiving pipeline " <<
                        static_cast<unsigned>(rv));
    return rv;
  }

  return NS_OK;
}

    void SanityCheckTracks(const JsepTrack& a, const JsepTrack& b) const
    {
      if (!a.GetNegotiatedDetails()) {
        ASSERT_FALSE(!!b.GetNegotiatedDetails());
        return;
      }

      ASSERT_TRUE(!!a.GetNegotiatedDetails());
      ASSERT_TRUE(!!b.GetNegotiatedDetails());
      ASSERT_EQ(a.GetMediaType(), b.GetMediaType());
      ASSERT_EQ(a.GetStreamId(), b.GetStreamId());
      ASSERT_EQ(a.GetTrackId(), b.GetTrackId());
      ASSERT_EQ(a.GetCNAME(), b.GetCNAME());
      ASSERT_NE(a.GetDirection(), b.GetDirection());
      ASSERT_EQ(a.GetSsrcs().size(), b.GetSsrcs().size());
      for (size_t i = 0; i < a.GetSsrcs().size(); ++i) {
        ASSERT_EQ(a.GetSsrcs()[i], b.GetSsrcs()[i]);
      }

      SanityCheckNegotiatedDetails(*a.GetNegotiatedDetails(),
                                   *b.GetNegotiatedDetails());
    }

nsresult
MediaPipelineFactory::CreateMediaPipelineReceiving(
    const JsepTrackPair& aTrackPair,
    const JsepTrack& aTrack,
    size_t aLevel,
    RefPtr<TransportFlow> aRtpFlow,
    RefPtr<TransportFlow> aRtcpFlow,
    nsAutoPtr<MediaPipelineFilter> aFilter,
    const RefPtr<MediaSessionConduit>& aConduit)
{
  // We will error out earlier if this isn't here.
  RefPtr<RemoteSourceStreamInfo> stream =
      mPCMedia->GetRemoteStreamById(aTrack.GetStreamId());

  RefPtr<MediaPipelineReceive> pipeline;

  TrackID numericTrackId = stream->GetNumericTrackId(aTrack.GetTrackId());
  MOZ_ASSERT(numericTrackId != TRACK_INVALID);

  bool queue_track = stream->ShouldQueueTracks();

  MOZ_MTLOG(ML_DEBUG, __FUNCTION__ << ": Creating pipeline for "
            << numericTrackId << " -> " << aTrack.GetTrackId());

  if (aTrack.GetMediaType() == SdpMediaSection::kAudio) {
    pipeline = new MediaPipelineReceiveAudio(
        mPC->GetHandle(),
        mPC->GetMainThread().get(),
        mPC->GetSTSThread(),
        stream->GetMediaStream()->GetInputStream(),
        aTrack.GetTrackId(),
        numericTrackId,
        aLevel,
        static_cast<AudioSessionConduit*>(aConduit.get()), // Ugly downcast.
        aRtpFlow,
        aRtcpFlow,
        aFilter,
        queue_track);
  } else if (aTrack.GetMediaType() == SdpMediaSection::kVideo) {
    pipeline = new MediaPipelineReceiveVideo(
        mPC->GetHandle(),
        mPC->GetMainThread().get(),
        mPC->GetSTSThread(),
        stream->GetMediaStream()->GetInputStream(),
        aTrack.GetTrackId(),
        numericTrackId,
        aLevel,
        static_cast<VideoSessionConduit*>(aConduit.get()), // Ugly downcast.
        aRtpFlow,
        aRtcpFlow,
        aFilter,
        queue_track);
  } else {
    MOZ_ASSERT(false);
    MOZ_MTLOG(ML_ERROR, "Invalid media type in CreateMediaPipelineReceiving");
    return NS_ERROR_FAILURE;
  }

  nsresult rv = pipeline->Init();
  if (NS_FAILED(rv)) {
    MOZ_MTLOG(ML_ERROR, "Couldn't initialize receiving pipeline");
    return rv;
  }

  rv = stream->StorePipeline(aTrack.GetTrackId(),
                             RefPtr<MediaPipeline>(pipeline));
  if (NS_FAILED(rv)) {
    MOZ_MTLOG(ML_ERROR, "Couldn't store receiving pipeline " <<
                        static_cast<unsigned>(rv));
    return rv;
  }

  stream->SyncPipeline(pipeline);

  return NS_OK;
}

nsresult
MediaPipelineFactory::CreateOrUpdateMediaPipeline(
    const JsepTrackPair& aTrackPair,
    const JsepTrack& aTrack)
{
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  // The GMP code is all the way on the other side of webrtc.org, and it is not
  // feasible to plumb this information all the way through. So, we set it (for
  // the duration of this call) in a global variable. This allows the GMP code
  // to report errors to the PC.
  WebrtcGmpPCHandleSetter setter(mPC->GetHandle());
#endif

  MOZ_ASSERT(aTrackPair.mRtpTransport);

  bool receiving = aTrack.GetDirection() == sdp::kRecv;

  size_t level;
  RefPtr<TransportFlow> rtpFlow;
  RefPtr<TransportFlow> rtcpFlow;
  nsAutoPtr<MediaPipelineFilter> filter;

  nsresult rv = GetTransportParameters(aTrackPair,
                                       aTrack,
                                       &level,
                                       &rtpFlow,
                                       &rtcpFlow,
                                       &filter);
  if (NS_FAILED(rv)) {
    MOZ_MTLOG(ML_ERROR, "Failed to get transport parameters for pipeline, rv="
              << static_cast<unsigned>(rv));
    return rv;
  }

  if (aTrack.GetMediaType() == SdpMediaSection::kApplication) {
    // GetTransportParameters has already done everything we need for
    // datachannel.
    return NS_OK;
  }

  // Find the stream we need
  SourceStreamInfo* stream;
  if (receiving) {
    stream = mPCMedia->GetRemoteStreamById(aTrack.GetStreamId());
  } else {
    stream = mPCMedia->GetLocalStreamById(aTrack.GetStreamId());
  }

  if (!stream) {
    MOZ_MTLOG(ML_ERROR, "Negotiated " << (receiving ? "recv" : "send")
              << " stream id " << aTrack.GetStreamId() << " was never added");
    MOZ_ASSERT(false);
    return NS_ERROR_FAILURE;
  }

  if (!stream->HasTrack(aTrack.GetTrackId())) {
    MOZ_MTLOG(ML_ERROR, "Negotiated " << (receiving ? "recv" : "send")
              << " track id " << aTrack.GetTrackId() << " was never added");
    MOZ_ASSERT(false);
    return NS_ERROR_FAILURE;
  }

  RefPtr<MediaSessionConduit> conduit;
  if (aTrack.GetMediaType() == SdpMediaSection::kAudio) {
    rv = GetOrCreateAudioConduit(aTrackPair, aTrack, &conduit);
    if (NS_FAILED(rv))
      return rv;
  } else if (aTrack.GetMediaType() == SdpMediaSection::kVideo) {
    rv = GetOrCreateVideoConduit(aTrackPair, aTrack, &conduit);
    if (NS_FAILED(rv))
      return rv;
  } else {
    // We've created the TransportFlow, nothing else to do here.
    return NS_OK;
  }

  RefPtr<MediaPipeline> pipeline =
    stream->GetPipelineByTrackId_m(aTrack.GetTrackId());

  if (pipeline && pipeline->level() != static_cast<int>(level)) {
    MOZ_MTLOG(ML_WARNING, "Track " << aTrack.GetTrackId() <<
                          " has moved from level " << pipeline->level() <<
                          " to level " << level <<
                          ". This requires re-creating the MediaPipeline.");
    // Since we do not support changing the conduit on a pre-existing
    // MediaPipeline
    pipeline = nullptr;
    stream->RemoveTrack(aTrack.GetTrackId());
    stream->AddTrack(aTrack.GetTrackId());
  }

  if (pipeline) {
    pipeline->UpdateTransport_m(level, rtpFlow, rtcpFlow, filter);
    return NS_OK;
  }

  MOZ_MTLOG(ML_DEBUG,
            "Creating media pipeline"
                << " m-line index=" << aTrackPair.mLevel
                << " type=" << aTrack.GetMediaType()
//.........这里部分代码省略.........

nsresult
MediaPipelineFactory::CreateOrUpdateMediaPipeline(
    const JsepTrackPair& aTrackPair,
    const JsepTrack& aTrack)
{
  MOZ_ASSERT(aTrackPair.mRtpTransport);

  bool receiving =
      aTrack.GetDirection() == JsepTrack::Direction::kJsepTrackReceiving;

  size_t level;
  RefPtr<TransportFlow> rtpFlow;
  RefPtr<TransportFlow> rtcpFlow;
  nsAutoPtr<MediaPipelineFilter> filter;

  nsresult rv = GetTransportParameters(aTrackPair,
                                       aTrack,
                                       &level,
                                       &rtpFlow,
                                       &rtcpFlow,
                                       &filter);
  if (NS_FAILED(rv)) {
    MOZ_MTLOG(ML_ERROR, "Failed to get transport parameters for pipeline, rv="
              << static_cast<unsigned>(rv));
    return rv;
  }

  if (aTrack.GetMediaType() == SdpMediaSection::kApplication) {
    // GetTransportParameters has already done everything we need for
    // datachannel.
    return NS_OK;
  }

  // Find the stream we need
  SourceStreamInfo* stream;
  if (receiving) {
    stream = mPCMedia->GetRemoteStreamById(aTrack.GetStreamId());
  } else {
    stream = mPCMedia->GetLocalStreamById(aTrack.GetStreamId());
  }

  if (!stream) {
    MOZ_MTLOG(ML_ERROR, "Negotiated " << (receiving ? "recv" : "send")
              << " stream id " << aTrack.GetStreamId() << " was never added");
    MOZ_ASSERT(false);
    return NS_ERROR_FAILURE;
  }

  if (!stream->HasTrack(aTrack.GetTrackId())) {
    MOZ_MTLOG(ML_ERROR, "Negotiated " << (receiving ? "recv" : "send")
              << " track id " << aTrack.GetTrackId() << " was never added");
    MOZ_ASSERT(false);
    return NS_ERROR_FAILURE;
  }

  RefPtr<MediaSessionConduit> conduit;
  if (aTrack.GetMediaType() == SdpMediaSection::kAudio) {
    rv = GetOrCreateAudioConduit(aTrackPair, aTrack, &conduit);
    if (NS_FAILED(rv))
      return rv;
  } else if (aTrack.GetMediaType() == SdpMediaSection::kVideo) {
    rv = GetOrCreateVideoConduit(aTrackPair, aTrack, &conduit);
    if (NS_FAILED(rv))
      return rv;
  } else {
    // We've created the TransportFlow, nothing else to do here.
    return NS_OK;
  }

  RefPtr<MediaPipeline> pipeline =
    stream->GetPipelineByTrackId_m(aTrack.GetTrackId());

  if (pipeline && pipeline->level() != static_cast<int>(level)) {
    MOZ_MTLOG(ML_WARNING, "Track " << aTrack.GetTrackId() <<
                          " has moved from level " << pipeline->level() <<
                          " to level " << level <<
                          ". This requires re-creating the MediaPipeline.");
    // Since we do not support changing the conduit on a pre-existing
    // MediaPipeline
    pipeline = nullptr;
    stream->RemoveTrack(aTrack.GetTrackId());
    stream->AddTrack(aTrack.GetTrackId());
  }

  if (pipeline) {
    pipeline->UpdateTransport_m(level, rtpFlow, rtcpFlow, filter);
    return NS_OK;
  }

  MOZ_MTLOG(ML_DEBUG,
            "Creating media pipeline"
                << " m-line index=" << aTrackPair.mLevel
                << " type=" << aTrack.GetMediaType()
                << " direction=" << aTrack.GetDirection());

  if (receiving) {
    rv = CreateMediaPipelineReceiving(aTrackPair, aTrack,
                                      level, rtpFlow, rtcpFlow, filter,
                                      conduit);
    if (NS_FAILED(rv))
//.........这里部分代码省略.........