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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#ifndef ACCURATE_SEEK_TASK_H
#define ACCURATE_SEEK_TASK_H
#include "SeekTask.h"
#include "MediaDecoderReader.h"
#include "SeekJob.h"
namespace mozilla {
class AccurateSeekTask final : public SeekTask {
public:
AccurateSeekTask(const void* aDecoderID,
AbstractThread* aThread,
MediaDecoderReaderWrapper* aReader,
const SeekTarget& aTarget,
const MediaInfo& aInfo,
const media::TimeUnit& aEnd,
int64_t aCurrentMediaTime);
void Discard() override;
RefPtr<SeekTaskPromise> Seek(const media::TimeUnit& aDuration) override;
bool NeedToResetMDSM() const override;
private:
~AccurateSeekTask();
void RequestVideoData();
void RequestAudioData();
nsresult DropAudioUpToSeekTarget(MediaData* aSample);
nsresult DropVideoUpToSeekTarget(MediaData* aSample);
void MaybeFinishSeek();
void OnSeekResolved(media::TimeUnit);
void OnSeekRejected(nsresult aResult);
void OnAudioDecoded(MediaData* aAudioSample);
void OnVideoDecoded(MediaData* aVideoSample);
void OnNotDecoded(MediaData::Type, const MediaResult&);
void SetCallbacks();
void CancelCallbacks();
void AdjustFastSeekIfNeeded(MediaData* aSample);
/*
* Internal state.
*/
const media::TimeUnit mCurrentTimeBeforeSeek;
const uint32_t mAudioRate; // Audio sample rate.
bool mDoneAudioSeeking;
bool mDoneVideoSeeking;
// This temporarily stores the first frame we decode after we seek.
// This is so that if we hit end of stream while we're decoding to reach
// the seek target, we will still have a frame that we can display as the
// last frame in the media.
RefPtr<MediaData> mFirstVideoFrameAfterSeek;
/*
* Track the current seek promise made by the reader.
*/
MozPromiseRequestHolder<MediaDecoderReader::SeekPromise> mSeekRequest;
MediaEventListener mAudioCallback;
MediaEventListener mVideoCallback;
MediaEventListener mAudioWaitCallback;
MediaEventListener mVideoWaitCallback;
};
} // namespace mozilla
#endif /* ACCURATE_SEEK_TASK_H */
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