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/* -*- 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(GonkMediaDataDecoder_h_)
#define GonkMediaDataDecoder_h_
#include "PlatformDecoderModule.h"
#include <stagefright/foundation/AHandler.h>
namespace android {
struct ALooper;
class MediaBuffer;
class MediaCodecProxy;
} // namespace android
namespace mozilla {
class MediaRawData;
// Manage the data flow from inputting encoded data and outputting decode data.
class GonkDecoderManager : public android::AHandler {
public:
typedef TrackInfo::TrackType TrackType;
typedef MediaDataDecoder::InitPromise InitPromise;
virtual ~GonkDecoderManager() {}
virtual RefPtr<InitPromise> Init() = 0;
virtual const char* GetDescriptionName() const = 0;
// Asynchronously send sample into mDecoder. If out of input buffer, aSample
// will be queued for later re-send.
nsresult Input(MediaRawData* aSample);
// Flush the queued samples and signal decoder to throw all pending input/output away.
nsresult Flush();
// Shutdown decoder and rejects the init promise.
virtual nsresult Shutdown();
// How many samples are waiting for processing.
size_t NumQueuedSamples();
// Set callback for decoder events, such as requesting more input,
// returning output, or reporting error.
void SetDecodeCallback(MediaDataDecoderCallback* aCallback)
{
mDecodeCallback = aCallback;
}
protected:
GonkDecoderManager()
: mMutex("GonkDecoderManager")
, mLastTime(INT64_MIN)
, mFlushMonitor("GonkDecoderManager::Flush")
, mIsFlushing(false)
, mDecodeCallback(nullptr)
{}
bool InitLoopers(MediaData::Type aType);
void onMessageReceived(const android::sp<android::AMessage> &aMessage) override;
// Produces decoded output. It returns NS_OK on success, or NS_ERROR_NOT_AVAILABLE
// when output is not produced yet.
// If this returns a failure code other than NS_ERROR_NOT_AVAILABLE, an error
// will be reported through mDecodeCallback.
virtual nsresult Output(int64_t aStreamOffset,
RefPtr<MediaData>& aOutput) = 0;
// Send queued samples to OMX. It returns how many samples are still in
// queue after processing, or negative error code if failed.
int32_t ProcessQueuedSamples();
void ProcessInput(bool aEndOfStream);
virtual void ProcessFlush();
void ProcessToDo(bool aEndOfStream);
virtual void ResetEOS();
RefPtr<MediaByteBuffer> mCodecSpecificData;
nsAutoCString mMimeType;
// MediaCodedc's wrapper that performs the decoding.
android::sp<android::MediaCodecProxy> mDecoder;
// Looper for mDecoder to run on.
android::sp<android::ALooper> mDecodeLooper;
// Looper to run decode tasks such as processing input, output, flush, and
// recycling output buffers.
android::sp<android::ALooper> mTaskLooper;
// Message codes for tasks running on mTaskLooper.
enum {
// Decoder will send this to indicate internal state change such as input or
// output buffers availability. Used to run pending input & output tasks.
kNotifyDecoderActivity = 'nda ',
// Signal the decoder to flush.
kNotifyProcessFlush = 'npf ',
// Used to process queued samples when there is new input.
kNotifyProcessInput = 'npi ',
#ifdef DEBUG
kNotifyFindLooperId = 'nfli',
#endif
};
MozPromiseHolder<InitPromise> mInitPromise;
Mutex mMutex; // Protects mQueuedSamples.
// A queue that stores the samples waiting to be sent to mDecoder.
// Empty element means EOS and there shouldn't be any sample be queued after it.
// Samples are queued in caller's thread and dequeued in mTaskLooper.
nsTArray<RefPtr<MediaRawData>> mQueuedSamples;
// The last decoded frame presentation time. Only accessed on mTaskLooper.
int64_t mLastTime;
Monitor mFlushMonitor; // Waits for flushing to complete.
bool mIsFlushing; // Protected by mFlushMonitor.
// Remembers the notification that is currently waiting for the decoder event
// to avoid requesting more than one notification at the time, which is
// forbidden by mDecoder.
android::sp<android::AMessage> mToDo;
// Stores sample info for output buffer processing later.
struct WaitOutputInfo {
WaitOutputInfo(int64_t aOffset, int64_t aTimestamp, bool aEOS)
: mOffset(aOffset)
, mTimestamp(aTimestamp)
, mEOS(aEOS)
{}
const int64_t mOffset;
const int64_t mTimestamp;
const bool mEOS;
};
nsTArray<WaitOutputInfo> mWaitOutput;
MediaDataDecoderCallback* mDecodeCallback; // Reports decoder output or error.
private:
void UpdateWaitingList(int64_t aForgetUpTo);
#ifdef DEBUG
typedef void* LooperId;
bool OnTaskLooper();
LooperId mTaskLooperId;
#endif
};
class AutoReleaseMediaBuffer
{
public:
AutoReleaseMediaBuffer(android::MediaBuffer* aBuffer, android::MediaCodecProxy* aCodec)
: mBuffer(aBuffer)
, mCodec(aCodec)
{}
~AutoReleaseMediaBuffer()
{
MOZ_ASSERT(mCodec.get());
if (mBuffer) {
mCodec->ReleaseMediaBuffer(mBuffer);
}
}
android::MediaBuffer* forget()
{
android::MediaBuffer* tmp = mBuffer;
mBuffer = nullptr;
return tmp;
}
private:
android::MediaBuffer* mBuffer;
android::sp<android::MediaCodecProxy> mCodec;
};
// Samples are decoded using the GonkDecoder (MediaCodec)
// created by the GonkDecoderManager. This class implements
// the higher-level logic that drives mapping the Gonk to the async
// MediaDataDecoder interface. The specifics of decoding the exact stream
// type are handled by GonkDecoderManager and the GonkDecoder it creates.
class GonkMediaDataDecoder : public MediaDataDecoder {
public:
GonkMediaDataDecoder(GonkDecoderManager* aDecoderManager,
MediaDataDecoderCallback* aCallback);
~GonkMediaDataDecoder();
RefPtr<InitPromise> Init() override;
void Input(MediaRawData* aSample) override;
void Flush() override;
void Drain() override;
void Shutdown() override;
const char* GetDescriptionName() const override
{
return "gonk decoder";
}
private:
android::sp<GonkDecoderManager> mManager;
};
} // namespace mozilla
#endif // GonkMediaDataDecoder_h_
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