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Implement keyframe and framesize VPXDecoder helpers

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Encapsulate code from WebMDemuxer to query keyframe and frame resolution inside VPXDecoder, so we have a clean wrapper for all the libvpx functions we use.
This commit is contained in:
trav90 2018-10-08 21:14:24 -05:00 • committed by Roy Tam
commit 3b0820badb
2 changed files with 46 additions and 10 deletions
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7
dom/media/platforms/agnostic/VPXDecoder.h
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@ -7,6 +7,7 @@
#define VPXDecoder_h_
#include "PlatformDecoderModule.h"
#include "mozilla/Span.h"
#include <stdint.h>
#define VPX_DONT_DEFINE_STDINT_TYPES
@ -47,6 +48,12 @@ public:
static bool IsVP8(const nsACString& aMimeType);
static bool IsVP9(const nsACString& aMimeType);
// Return true if a sample is a keyframe for the specified codec.
static bool IsKeyframe(Span<const uint8_t> aBuffer, Codec aCodec);
// Return the frame dimensions for a sample for the specified codec.
static nsIntSize GetFrameSize(Span<const uint8_t> aBuffer, Codec aCodec);
private:
void ProcessDecode(MediaRawData* aSample);
MediaResult DoDecode(MediaRawData* aSample);