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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#if !defined(VPXDecoder_h_)
#define VPXDecoder_h_
#include "PlatformDecoderModule.h"
#include "mozilla/Span.h"
#include <stdint.h>
#define VPX_DONT_DEFINE_STDINT_TYPES
#include "vpx/vp8dx.h"
#include "vpx/vpx_codec.h"
#include "vpx/vpx_decoder.h"
namespace mozilla {
using namespace layers;
class VPXDecoder : public MediaDataDecoder
{
public:
explicit VPXDecoder(const CreateDecoderParams& aParams);
~VPXDecoder();
RefPtr<InitPromise> Init() override;
void Input(MediaRawData* aSample) override;
void Flush() override;
void Drain() override;
void Shutdown() override;
const char* GetDescriptionName() const override
{
return "libvpx video decoder";
}
enum Codec: uint8_t {
VP8 = 1 << 0,
VP9 = 1 << 1,
Unknown = 1 << 7,
};
// Return true if aMimeType is a one of the strings used by our demuxers to
// identify VPX of the specified type. Does not parse general content type
// strings, i.e. white space matters.
static bool IsVPX(const nsACString& aMimeType, uint8_t aCodecMask=VP8|VP9);
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);
void ProcessDrain();
MediaResult DecodeAlpha(vpx_image_t** aImgAlpha,
MediaRawData* aSample);
const RefPtr<ImageContainer> mImageContainer;
const RefPtr<TaskQueue> mTaskQueue;
MediaDataDecoderCallback* mCallback;
Atomic<bool> mIsFlushing;
// VPx decoder state
vpx_codec_ctx_t mVPX;
// VPx alpha decoder state
vpx_codec_ctx_t mVPXAlpha;
const VideoInfo& mInfo;
const Codec mCodec;
};
} // namespace mozilla
#endif
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