gecko-dev/dom/media/SeekTask.h

105 строки
2.3 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 SEEK_TASK_H
#define SEEK_TASK_H
#include "mozilla/MozPromise.h"
#include "MediaResult.h"
#include "SeekTarget.h"
namespace mozilla {
class AbstractThread;
class MediaData;
class MediaDecoderReaderWrapper;
namespace media {
class TimeUnit;
}
struct SeekTaskResolveValue
{
RefPtr<MediaData> mSeekedAudioData;
RefPtr<MediaData> mSeekedVideoData;
bool mIsAudioQueueFinished;
bool mIsVideoQueueFinished;
};
struct SeekTaskRejectValue
{
SeekTaskRejectValue()
: mIsAudioQueueFinished(false)
, mIsVideoQueueFinished(false)
, mError(NS_ERROR_DOM_MEDIA_FATAL_ERR)
{
}
bool mIsAudioQueueFinished;
bool mIsVideoQueueFinished;
MediaResult mError;
};
class SeekTask {
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SeekTask)
public:
static const bool IsExclusive = true;
using SeekTaskPromise =
MozPromise<SeekTaskResolveValue, SeekTaskRejectValue, IsExclusive>;
virtual void Discard() = 0;
virtual RefPtr<SeekTaskPromise> Seek(const media::TimeUnit& aDuration) = 0;
virtual bool NeedToResetMDSM() const = 0;
const SeekTarget& GetSeekTarget();
protected:
SeekTask(const void* aDecoderID,
AbstractThread* aThread,
MediaDecoderReaderWrapper* aReader,
const SeekTarget& aTarget);
virtual ~SeekTask();
void Resolve(const char* aCallSite);
void RejectIfExist(const MediaResult& aError, const char* aCallSite);
void AssertOwnerThread() const;
AbstractThread* OwnerThread() const;
/*
* Data shared with MDSM.
*/
const void* mDecoderID; // For logging.
const RefPtr<AbstractThread> mOwnerThread;
const RefPtr<MediaDecoderReaderWrapper> mReader;
/*
* Internal state.
*/
SeekTarget mTarget;
MozPromiseHolder<SeekTaskPromise> mSeekTaskPromise;
bool mIsDiscarded;
/*
* Information which are going to be returned to MDSM.
*/
RefPtr<MediaData> mSeekedAudioData;
RefPtr<MediaData> mSeekedVideoData;
bool mIsAudioQueueFinished;
bool mIsVideoQueueFinished;
};
} // namespace mozilla
#endif /* SEEK_TASK_H */