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This class easily allows an AVCC-only decoder (H264EME and Apple VDA/VideoToolbox) to support AnnexB and AVC3 content. This is done by lazily creating the decoder only once we have detected SPS/PPS in the data stream, and converting all input to AVCC format.
55 lines
2.1 KiB
C++
55 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_AVCCDecoderModule_h
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#define mozilla_AVCCDecoderModule_h
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#include "PlatformDecoderModule.h"
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namespace mozilla {
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class AVCCMediaDataDecoder;
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// AVCCDecoderModule is a PlatformDecoderModule wrapper used to ensure that
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// only AVCC format is fed to the underlying PlatformDecoderModule.
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// The AVCCDecoderModule allows playback of content where the SPS NAL may not be
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// provided in the init segment (e.g. AVC3 or Annex B)
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// AVCCDecoderModule will monitor the input data, and will delay creation of the
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// MediaDataDecoder until a SPS and PPS NALs have been extracted.
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//
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// AVCC-only decoder modules are AppleVideoDecoder and EMEH264Decoder.
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class AVCCDecoderModule : public PlatformDecoderModule {
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public:
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explicit AVCCDecoderModule(PlatformDecoderModule* aPDM);
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virtual ~AVCCDecoderModule();
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virtual nsresult Startup() MOZ_OVERRIDE;
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virtual nsresult Shutdown() MOZ_OVERRIDE;
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virtual already_AddRefed<MediaDataDecoder>
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CreateVideoDecoder(const mp4_demuxer::VideoDecoderConfig& aConfig,
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layers::LayersBackend aLayersBackend,
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layers::ImageContainer* aImageContainer,
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MediaTaskQueue* aVideoTaskQueue,
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MediaDataDecoderCallback* aCallback) MOZ_OVERRIDE;
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virtual already_AddRefed<MediaDataDecoder>
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CreateAudioDecoder(const mp4_demuxer::AudioDecoderConfig& aConfig,
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MediaTaskQueue* aAudioTaskQueue,
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MediaDataDecoderCallback* aCallback) MOZ_OVERRIDE;
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virtual bool SupportsAudioMimeType(const char* aMimeType) MOZ_OVERRIDE;
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virtual bool SupportsVideoMimeType(const char* aMimeType) MOZ_OVERRIDE;
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private:
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nsRefPtr<PlatformDecoderModule> mPDM;
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};
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} // namespace mozilla
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#endif // mozilla_AVCCDecoderModule_h
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