Quelle  DAV1DDecoder.h   Sprache: C

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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(DAV1DDecoder_h_)
#  define DAV1DDecoder_h_

#  include "PerformanceRecorder.h"
#  include "PlatformDecoderModule.h"
#  include "dav1d/dav1d.h"
#  include "mozilla/Result.h"
#  include "nsRefPtrHashtable.h"

namespace mozilla {

DDLoggedTypeDeclNameAndBase(DAV1DDecoder, MediaDataDecoder);

typedef nsRefPtrHashtable<nsPtrHashKey<const uint8_t>, MediaRawData>
    MediaRawDataHashtable;

class DAV1DDecoder final : public MediaDataDecoder,
                           public DecoderDoctorLifeLogger<DAV1DDecoder> {
 public:
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DAV1DDecoder, final);

  explicit DAV1DDecoder(const CreateDecoderParams& aParams);

  RefPtr<InitPromise> Init() override;
  RefPtr<DecodePromise> Decode(MediaRawData* aSample) override;
  RefPtr<DecodePromise> Drain() override;
  RefPtr<FlushPromise> Flush() override;
  RefPtr<ShutdownPromise> Shutdown() override;
  nsCString GetDescriptionName() const override {
    return "av1 libdav1d video decoder"_ns;
  }
  nsCString GetCodecName() const override { return "av1"_ns; }

  void ReleaseDataBuffer(const uint8_t* buf);

  static Maybe<gfx::YUVColorSpace> GetColorSpace(const Dav1dPicture& aPicture,
                                                 LazyLogModule& aLogger);

  static Maybe<gfx::ColorSpace2> GetColorPrimaries(const Dav1dPicture& aPicture,
                                                   LazyLogModule& aLogger);

 private:
  virtual ~DAV1DDecoder();
  RefPtr<DecodePromise> InvokeDecode(MediaRawData* aSample);
  Result<already_AddRefed<VideoData>, MediaResult> GetPicture();
  Result<already_AddRefed<VideoData>, MediaResult> ConstructImage(
      const Dav1dPicture& aPicture);

  Dav1dContext* mContext = nullptr;

  const VideoInfo mInfo;
  const RefPtr<TaskQueue> mTaskQueue;
  const RefPtr<layers::ImageContainer> mImageContainer;
  const RefPtr<layers::KnowsCompositor> mImageAllocator;
  const Maybe<TrackingId> mTrackingId;
  const bool mLowLatency;
  PerformanceRecorderMulti<DecodeStage> mPerformanceRecorder;

  // Keep the buffers alive until dav1d
  // does not need them any more.
  MediaRawDataHashtable mDecodingBuffers;
};

}  // namespace mozilla

#endif  // DAV1DDecoder_h_