nsresult
DASHReader::ReadMetadata(VideoInfo* aInfo,
MetadataTags** aTags)
{
NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");
// Wait for MPD to be parsed and child readers created.
LOG1("Waiting for metadata download.");
nsresult rv = WaitForMetadata();
// If we get an abort, return silently; the decoder is shutting down.
if (NS_ERROR_ABORT == rv) {
return NS_OK;
}
// Verify no other errors before continuing.
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(aTags, "Called with null MetadataTags**.");
*aTags = nullptr;
// Get metadata from child readers.
VideoInfo audioInfo, videoInfo;
// Read metadata for all video streams.
for (uint i = 0; i < mVideoReaders.Length(); i++) {
// Use an nsAutoPtr here to ensure |tags| memory does not leak.
nsAutoPtr<nsHTMLMediaElement::MetadataTags> tags;
rv = mVideoReaders[i]->ReadMetadata(&videoInfo, getter_Transfers(tags));
NS_ENSURE_SUCCESS(rv, rv);
// Use metadata from current video sub reader to populate aInfo.
if (mVideoReaders[i] == mVideoReader) {
mInfo.mHasVideo = videoInfo.mHasVideo;
mInfo.mDisplay = videoInfo.mDisplay;
}
}
// Read metadata for audio stream.
// Note: Getting metadata tags from audio reader only for now.
// XXX Audio stream switching not yet supported.
if (mAudioReader) {
rv = mAudioReader->ReadMetadata(&audioInfo, aTags);
NS_ENSURE_SUCCESS(rv, rv);
mInfo.mHasAudio = audioInfo.mHasAudio;
mInfo.mAudioRate = audioInfo.mAudioRate;
mInfo.mAudioChannels = audioInfo.mAudioChannels;
mInfo.mStereoMode = audioInfo.mStereoMode;
}
*aInfo = mInfo;
return NS_OK;
}
nsresult
nsDASHReader::ReadMetadata(nsVideoInfo* aInfo,
MetadataTags** aTags)
{
NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");
// Wait for MPD to be parsed and child readers created.
LOG1("Waiting for metadata download.");
nsresult rv = WaitForMetadata();
// If we get an abort, return silently; the decoder is shutting down.
if (NS_ERROR_ABORT == rv) {
return NS_OK;
}
// Verify no other errors before continuing.
NS_ENSURE_SUCCESS(rv, rv);
// Get metadata from child readers.
nsVideoInfo audioInfo, videoInfo;
if (mVideoReader) {
rv = mVideoReader->ReadMetadata(&videoInfo, aTags);
NS_ENSURE_SUCCESS(rv, rv);
mInfo.mHasVideo = videoInfo.mHasVideo;
mInfo.mDisplay = videoInfo.mDisplay;
}
if (mAudioReader) {
rv = mAudioReader->ReadMetadata(&audioInfo, aTags);
NS_ENSURE_SUCCESS(rv, rv);
mInfo.mHasAudio = audioInfo.mHasAudio;
mInfo.mAudioRate = audioInfo.mAudioRate;
mInfo.mAudioChannels = audioInfo.mAudioChannels;
mInfo.mStereoMode = audioInfo.mStereoMode;
}
*aInfo = mInfo;
return NS_OK;
}