dom/media/platforms/agnostic/AOMDecoder.h
author Ralph Giles <giles@mozilla.com>
Tue, 30 May 2017 16:37:20 -0700
changeset 409940 167cd75cfda764e5ddce73d6b026363dbb1c2adc
parent 409851 1de33be170d6683472473765ab2f382c315c6979
child 426869 19c91c598eed05c98d0b11c484dbd4fbbe8bddad
permissions -rw-r--r--
Bug 1368839 - Add av1 to MediaSource.isTypeSupported. r=gerald When av1 video playback is enabled, declare it as supported in the webm container in MediaSource.IsTypeSupported. Also support special mime types of the form video/webm; codecs=vp9.experimental.<git-commit-id> so test sites can verify playback support of particular encodings while the av1 bitstream is under development. MozReview-Commit-ID: GS4n7cPxfQ7

/* -*- 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 {

class AOMDecoder : public MediaDataDecoder
{
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;
  const char* GetDescriptionName() const override
  {
    return "libaom (AV1) 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 aCodecType is a supported codec description.
  static bool IsSupportedCodec(const nsAString& aCodecType);

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

  // Return the frame dimensions for a sample.
  static nsIntSize 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_