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Recognize AV1 in WebMDemuxer

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Call AOMDecoder to handle AV1 video tracks from the WebM container. The new decoder is very similar to VPXDecoder so we can use parallel calls. This codec is still build-time conditional.
This commit is contained in:
trav90 2018-10-15 22:11:24 -05:00 • committed by Roy Tam
commit 76faa8e90f
1 changed files with 25 additions and 4 deletions
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29
dom/media/webm/WebMDemuxer.cpp
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@ -8,6 +8,9 @@
#include "MediaDecoderStateMachine.h"
#include "AbstractMediaDecoder.h"
#include "MediaResource.h"
#ifdef MOZ_AV1
#include "AOMDecoder.h"
#endif
#include "OpusDecoder.h"
#include "VPXDecoder.h"
#include "WebMDemuxer.h"
@ -320,6 +323,9 @@ WebMDemuxer::ReadMetadata()
case NESTEGG_CODEC_VP9:
mInfo.mVideo.mMimeType = "video/webm; codecs=vp9";
break;
case NESTEGG_CODEC_AV1:
mInfo.mVideo.mMimeType = "video/webm; codecs=av1";
break;
default:
NS_WARNING("Unknown WebM video codec");
return NS_ERROR_FAILURE;
@ -651,6 +657,11 @@ WebMDemuxer::GetNextPacket(TrackInfo::TrackType aType, MediaRawDataQueue *aSampl
case NESTEGG_CODEC_VP9:
isKeyframe = VPXDecoder::IsKeyframe(sample, VPXDecoder::Codec::VP9);
break;
#ifdef MOZ_AV1
case NESTEGG_CODEC_AV1:
isKeyframe = AOMDecoder::IsKeyframe(sample);
break;
#endif
default:
NS_WARNING("Cannot detect keyframes in unknown WebM video codec");
return NS_ERROR_FAILURE;
@ -658,10 +669,20 @@ WebMDemuxer::GetNextPacket(TrackInfo::TrackType aType, MediaRawDataQueue *aSampl
if (isKeyframe) {
// For both VP8 and VP9, we only look for resolution changes
// on keyframes. Other resolution changes are invalid.
auto codec = mVideoCodec == NESTEGG_CODEC_VP8
? VPXDecoder::Codec::VP8
: VPXDecoder::Codec::VP9;
auto dimensions = VPXDecoder::GetFrameSize(sample, codec);
auto dimensions = nsIntSize(0, 0);
switch (mVideoCodec) {
case NESTEGG_CODEC_VP8:
dimensions = VPXDecoder::GetFrameSize(sample, VPXDecoder::Codec::VP8);
break;
case NESTEGG_CODEC_VP9:
dimensions = VPXDecoder::GetFrameSize(sample, VPXDecoder::Codec::VP9);
break;
#ifdef MOZ_AV1
case NESTEGG_CODEC_AV1:
dimensions = AOMDecoder::GetFrameSize(sample);
break;
#endif
}
if (mLastSeenFrameSize.isSome()
&& (dimensions != mLastSeenFrameSize.value())) {
mInfo.mVideo.mDisplay = dimensions;