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100 lines
3.4 KiB
C++
100 lines
3.4 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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#if !defined(GonkMediaDataDecoder_h_)
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#define GonkMediaDataDecoder_h_
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#include "mp4_demuxer/mp4_demuxer.h"
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#include "mozilla/RefPtr.h"
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#include "MP4Reader.h"
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namespace android {
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class MediaCodecProxy;
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} // namespace android
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namespace mozilla {
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// Manage the data flow from inputting encoded data and outputting decode data.
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class GonkDecoderManager {
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public:
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virtual ~GonkDecoderManager() {}
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// Creates and initializs the GonkDecoder.
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// Returns nullptr on failure.
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virtual android::sp<android::MediaCodecProxy> Init(MediaDataDecoderCallback* aCallback) = 0;
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// Produces decoded output, it blocks until output can be produced or a timeout
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// is expired or until EOS. Returns NS_OK on success, or NS_ERROR_NOT_AVAILABLE
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// if there's not enough data to produce more output. If this returns a failure
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// code other than NS_ERROR_NOT_AVAILABLE, an error will be reported to the
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// MP4Reader.
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virtual nsresult Input(mp4_demuxer::MP4Sample* aSample) = 0;
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virtual nsresult Output(int64_t aStreamOffset,
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nsAutoPtr<MediaData>& aOutput) = 0;
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};
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// Samples are decoded using the GonkDecoder (MediaCodec)
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// created by the GonkDecoderManager. This class implements
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// the higher-level logic that drives mapping the Gonk to the async
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// MediaDataDecoder interface. The specifics of decoding the exact stream
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// type are handled by GonkDecoderManager and the GonkDecoder it creates.
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class GonkMediaDataDecoder : public MediaDataDecoder {
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public:
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GonkMediaDataDecoder(GonkDecoderManager* aDecoderManager,
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MediaTaskQueue* aTaskQueue,
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MediaDataDecoderCallback* aCallback);
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~GonkMediaDataDecoder();
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virtual nsresult Init() MOZ_OVERRIDE;
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virtual nsresult Input(mp4_demuxer::MP4Sample* aSample);
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virtual nsresult Flush() MOZ_OVERRIDE;
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virtual nsresult Drain() MOZ_OVERRIDE;
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virtual nsresult Shutdown() MOZ_OVERRIDE;
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virtual bool IsWaitingMediaResources() MOZ_OVERRIDE;
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virtual bool IsDormantNeeded() MOZ_OVERRIDE;
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virtual void ReleaseMediaResources() MOZ_OVERRIDE;
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private:
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// Called on the task queue. Inserts the sample into the decoder, and
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// extracts output if available, if aSample is null, it means there is
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// no data from source, it will notify the decoder EOS and flush all the
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// decoded frames.
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void ProcessDecode(mp4_demuxer::MP4Sample* aSample);
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// Called on the task queue. Extracts output if available, and delivers
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// it to the reader. Called after ProcessDecode() and ProcessDrain().
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void ProcessOutput();
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// Called on the task queue. Orders the Gonk to drain, and then extracts
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// all available output.
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void ProcessDrain();
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RefPtr<MediaTaskQueue> mTaskQueue;
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MediaDataDecoderCallback* mCallback;
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android::sp<android::MediaCodecProxy> mDecoder;
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nsAutoPtr<GonkDecoderManager> mManager;
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// The last offset into the media resource that was passed into Input().
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// This is used to approximate the decoder's position in the media resource.
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int64_t mLastStreamOffset;
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// Set it ture when there is no input data
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bool mSignaledEOS;
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};
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} // namespace mozilla
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#endif // GonkMediaDataDecoder_h_
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