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C++ VideoSegment::ReplaceWithDisabled方法代码示例

本文整理汇总了C++中VideoSegment::ReplaceWithDisabled方法的典型用法代码示例。如果您正苦于以下问题:C++ VideoSegment::ReplaceWithDisabled方法的具体用法?C++ VideoSegment::ReplaceWithDisabled怎么用?C++ VideoSegment::ReplaceWithDisabled使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在VideoSegment的用法示例。


在下文中一共展示了VideoSegment::ReplaceWithDisabled方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: AssertOwnerThread

void
DecodedStream::SendVideo(bool aIsSameOrigin, const PrincipalHandle& aPrincipalHandle)
{
  AssertOwnerThread();

  if (!mInfo.HasVideo()) {
    return;
  }

  VideoSegment output;
  TrackID videoTrackId = mInfo.mVideo.mTrackId;
  AutoTArray<RefPtr<MediaData>, 10> video;
  SourceMediaStream* sourceStream = mData->mStream;

  // It's OK to hold references to the VideoData because VideoData
  // is ref-counted.
  mVideoQueue.GetElementsAfter(mData->mNextVideoTime, &video);

  // tracksStartTimeStamp might be null when the SourceMediaStream not yet
  // be added to MediaStreamGraph.
  TimeStamp tracksStartTimeStamp = sourceStream->GetStreamTracksStrartTimeStamp();
  if (tracksStartTimeStamp.IsNull()) {
    tracksStartTimeStamp = TimeStamp::Now();
  }

  for (uint32_t i = 0; i < video.Length(); ++i) {
    VideoData* v = video[i]->As<VideoData>();

    if (mData->mNextVideoTime < v->mTime) {
      // Write last video frame to catch up. mLastVideoImage can be null here
      // which is fine, it just means there's no video.

      // TODO: |mLastVideoImage| should come from the last image rendered
      // by the state machine. This will avoid the black frame when capture
      // happens in the middle of playback (especially in th middle of a
      // video frame). E.g. if we have a video frame that is 30 sec long
      // and capture happens at 15 sec, we'll have to append a black frame
      // that is 15 sec long.
      WriteVideoToMediaStream(sourceStream, mData->mLastVideoImage, v->mTime,
          mData->mNextVideoTime, mData->mLastVideoImageDisplaySize,
          tracksStartTimeStamp + TimeDuration::FromMicroseconds(v->mTime),
          &output, aPrincipalHandle);
      mData->mNextVideoTime = v->mTime;
    }

    if (mData->mNextVideoTime < v->GetEndTime()) {
      WriteVideoToMediaStream(sourceStream, v->mImage, v->GetEndTime(),
          mData->mNextVideoTime, v->mDisplay,
          tracksStartTimeStamp + TimeDuration::FromMicroseconds(v->GetEndTime()),
          &output, aPrincipalHandle);
      mData->mNextVideoTime = v->GetEndTime();
      mData->mLastVideoImage = v->mImage;
      mData->mLastVideoImageDisplaySize = v->mDisplay;
    }
  }

  // Check the output is not empty.
  if (output.GetLastFrame()) {
    mData->mEOSVideoCompensation = ZeroDurationAtLastChunk(output);
  }

  if (!aIsSameOrigin) {
    output.ReplaceWithDisabled();
  }

  if (output.GetDuration() > 0) {
    sourceStream->AppendToTrack(videoTrackId, &output);
  }

  if (mVideoQueue.IsFinished() && !mData->mHaveSentFinishVideo) {
    if (mData->mEOSVideoCompensation) {
      VideoSegment endSegment;
      // Calculate the deviation clock time from DecodedStream.
      int64_t deviation_usec = sourceStream->StreamTimeToMicroseconds(1);
      WriteVideoToMediaStream(sourceStream, mData->mLastVideoImage,
          mData->mNextVideoTime + deviation_usec, mData->mNextVideoTime,
          mData->mLastVideoImageDisplaySize,
          tracksStartTimeStamp + TimeDuration::FromMicroseconds(mData->mNextVideoTime + deviation_usec),
          &endSegment, aPrincipalHandle);
      mData->mNextVideoTime += deviation_usec;
      MOZ_ASSERT(endSegment.GetDuration() > 0);
      if (!aIsSameOrigin) {
        endSegment.ReplaceWithDisabled();
      }
      sourceStream->AppendToTrack(videoTrackId, &endSegment);
    }
    sourceStream->EndTrack(videoTrackId);
    mData->mHaveSentFinishVideo = true;
  }
}
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