C++ (Cpp) DecodeToTarget示例

示例#1

文件： WMFReader.cpp 项目： excitedhoney/firefox

nsresult
WMFReader::Seek(int64_t aTargetUs,
                int64_t aStartTime,
                int64_t aEndTime,
                int64_t aCurrentTime)
{
    LOG("WMFReader::Seek() %lld", aTargetUs);

    NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");
#ifdef DEBUG
    bool canSeek = false;
    GetSourceReaderCanSeek(mSourceReader, canSeek);
    NS_ASSERTION(canSeek, "WMFReader::Seek() should only be called if we can seek!");
#endif

    nsresult rv = ResetDecode();
    NS_ENSURE_SUCCESS(rv, rv);

    // Mark that we must recapture the audio frame count from the next sample.
    // WMF doesn't set a discontinuity marker when we seek to time 0, so we
    // must remember to recapture the audio frame offset and reset the frame
    // sum on the next audio packet we decode.
    mMustRecaptureAudioPosition = true;

    AutoPropVar var;
    HRESULT hr = InitPropVariantFromInt64(UsecsToHNs(aTargetUs), &var);
    NS_ENSURE_TRUE(SUCCEEDED(hr), NS_ERROR_FAILURE);

    hr = mSourceReader->SetCurrentPosition(GUID_NULL, var);
    NS_ENSURE_TRUE(SUCCEEDED(hr), NS_ERROR_FAILURE);

    return DecodeToTarget(aTargetUs);
}

示例#2

文件： DirectShowReader.cpp 项目： bakulf/mozilla-central

nsresult
DirectShowReader::Seek(int64_t aTargetUs,
                       int64_t aStartTime,
                       int64_t aEndTime,
                       int64_t aCurrentTime)
{
  HRESULT hr;
  MOZ_ASSERT(mDecoder->OnDecodeThread(), "Should be on decode thread.");\

  LOG("DirectShowReader::Seek() target=%lld", aTargetUs);

  hr = mControl->Pause();
  NS_ENSURE_TRUE(SUCCEEDED(hr), NS_ERROR_FAILURE);

  nsresult rv = ResetDecode();
  NS_ENSURE_SUCCESS(rv, rv);

  LONGLONG seekPosition = UsecsToRefTime(aTargetUs);
  hr = mMediaSeeking->SetPositions(&seekPosition,
                                   AM_SEEKING_AbsolutePositioning,
                                   nullptr,
                                   AM_SEEKING_NoPositioning);
  NS_ENSURE_TRUE(SUCCEEDED(hr), NS_ERROR_FAILURE);

  hr = mControl->Run();
  NS_ENSURE_TRUE(SUCCEEDED(hr), NS_ERROR_FAILURE);

  return DecodeToTarget(aTargetUs);
}

示例#3

文件： WMFReader.cpp 项目： vlajos/mozilla-central

nsresult
WMFReader::Seek(int64_t aTargetUs,
                int64_t aStartTime,
                int64_t aEndTime,
                int64_t aCurrentTime)
{
  LOG("WMFReader::Seek() %lld", aTargetUs);

  NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");
  if (!mCanSeek) {
    return NS_ERROR_FAILURE;
  }

  nsresult rv = ResetDecode();
  NS_ENSURE_SUCCESS(rv, rv);

  AutoPropVar var;
  HRESULT hr = InitPropVariantFromInt64(UsecsToHNs(aTargetUs), &var);
  NS_ENSURE_TRUE(SUCCEEDED(hr), NS_ERROR_FAILURE);

  hr = mSourceReader->SetCurrentPosition(GUID_NULL, var);
  NS_ENSURE_TRUE(SUCCEEDED(hr), NS_ERROR_FAILURE);

  return DecodeToTarget(aTargetUs);
}

示例#4

文件： MediaPluginReader.cpp 项目： ehsan/gecko-dev

nsresult MediaPluginReader::Seek(int64_t aTarget, int64_t aStartTime, int64_t aEndTime, int64_t aCurrentTime)
{
  NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");

  mVideoQueue.Erase();
  mAudioQueue.Erase();

  mAudioSeekTimeUs = mVideoSeekTimeUs = aTarget;

  return DecodeToTarget(aTarget);
}

示例#5

文件： MediaOmxReader.cpp 项目： ConradIrwin/gecko-dev

nsresult MediaOmxReader::Seek(int64_t aTarget, int64_t aStartTime, int64_t aEndTime, int64_t aCurrentTime)
{
  NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");

  ResetDecode();
  VideoFrameContainer* container = mDecoder->GetVideoFrameContainer();
  if (container && container->GetImageContainer()) {
    container->GetImageContainer()->ClearAllImagesExceptFront();
  }

  mAudioSeekTimeUs = mVideoSeekTimeUs = aTarget;

  return DecodeToTarget(aTarget);
}

示例#6

文件： GStreamerReader.cpp 项目： KyleBarnhart/mozilla-central

nsresult GStreamerReader::Seek(int64_t aTarget,
                                 int64_t aStartTime,
                                 int64_t aEndTime,
                                 int64_t aCurrentTime)
{
  NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");

  gint64 seekPos = aTarget * GST_USECOND;
  LOG(PR_LOG_DEBUG, ("%p About to seek to %" GST_TIME_FORMAT,
        mDecoder, GST_TIME_ARGS(seekPos)));

  if (!gst_element_seek_simple(mPlayBin, GST_FORMAT_TIME,
    static_cast<GstSeekFlags>(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE), seekPos)) {
    LOG(PR_LOG_ERROR, ("seek failed"));
    return NS_ERROR_FAILURE;
  }
  LOG(PR_LOG_DEBUG, ("seek succeeded"));

  return DecodeToTarget(aTarget);
}

示例#7

文件： GStreamerReader.cpp 项目： jryans/gecko-dev

nsresult GStreamerReader::Seek(int64_t aTarget,
                               int64_t aStartTime,
                               int64_t aEndTime,
                               int64_t aCurrentTime)
{
    NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");

    gint64 seekPos = aTarget * GST_USECOND;
    LOG(PR_LOG_DEBUG, "%p About to seek to %" GST_TIME_FORMAT,
        mDecoder, GST_TIME_ARGS(seekPos));

    if (!gst_element_seek_simple(mPlayBin, GST_FORMAT_TIME,
                                 static_cast<GstSeekFlags>(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE), seekPos)) {
        LOG(PR_LOG_ERROR, "seek failed");
        return NS_ERROR_FAILURE;
    }
    LOG(PR_LOG_DEBUG, "seek succeeded");
    GstMessage* message = gst_bus_timed_pop_filtered(mBus, GST_CLOCK_TIME_NONE,
                          (GstMessageType)(GST_MESSAGE_ASYNC_DONE | GST_MESSAGE_ERROR));
    gst_message_unref(message);
    LOG(PR_LOG_DEBUG, "seek completed");

    return DecodeToTarget(aTarget);
}