DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (56e7b9127e89)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
/* -*- 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(AOMDecoder_h_)
#define AOMDecoder_h_

#include "PlatformDecoderModule.h"
#include "mozilla/Span.h"

#include <stdint.h>
#include "aom/aom_decoder.h"

namespace mozilla {

DDLoggedTypeDeclNameAndBase(AOMDecoder, MediaDataDecoder);

class AOMDecoder
  : public MediaDataDecoder
  , public DecoderDoctorLifeLogger<AOMDecoder>
{
public:
  explicit AOMDecoder(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 NS_LITERAL_CSTRING("av1 libaom video decoder");
  }

  // Return true if aMimeType is a one of the strings used
  // by our demuxers to identify AV1 streams.
  static bool IsAV1(const nsACString& aMimeType);

  // Return true if a sample is a keyframe.
  static bool IsKeyframe(Span<const uint8_t> aBuffer);

  // Return the frame dimensions for a sample.
  static gfx::IntSize GetFrameSize(Span<const uint8_t> aBuffer);

private:
  ~AOMDecoder();
  RefPtr<DecodePromise> ProcessDecode(MediaRawData* aSample);

  const RefPtr<layers::ImageContainer> mImageContainer;
  const RefPtr<TaskQueue> mTaskQueue;

  // AOM decoder state
  aom_codec_ctx_t mCodec;

  const VideoInfo& mInfo;
};

} // namespace mozilla

#endif // AOMDecoder_h_