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()
                << " direction=" << aTrack.GetDirection());

  if (receiving) {
    rv = CreateMediaPipelineReceiving(aTrackPair, aTrack,
                                      level, rtpFlow, rtcpFlow, filter,
                                      conduit);
    if (NS_FAILED(rv))
      return rv;
  } else {
    rv = CreateMediaPipelineSending(aTrackPair, aTrack,
                                    level, rtpFlow, rtcpFlow, filter,
                                    conduit);
    if (NS_FAILED(rv))
      return rv;
  }

  return NS_OK;
}
예제 #2
0
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))
      return rv;
  } else {
    rv = CreateMediaPipelineSending(aTrackPair, aTrack,
                                    level, rtpFlow, rtcpFlow, filter,
                                    conduit);
    if (NS_FAILED(rv))
      return rv;
  }

  return NS_OK;
}