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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef AUDIO_PLAYER_BASE_H_
#define AUDIO_PLAYER_BASE_H_
#include <media/MediaPlayerInterface.h>
#include <media/stagefright/MediaBuffer.h>
#include <media/stagefright/TimeSource.h>
#include <utils/threads.h>
namespace android {
class MediaSource;
class AudioTrack;
class PreviewPlayerBase;
class AudioPlayerBase : public TimeSource {
public:
enum {
REACHED_EOS,
SEEK_COMPLETE
};
AudioPlayerBase(const sp<MediaPlayerBase::AudioSink> &audioSink,
PreviewPlayerBase *audioObserver = NULL);
virtual ~AudioPlayerBase();
// Caller retains ownership of "source".
void setSource(const sp<MediaSource> &source);
// Return time in us.
virtual int64_t getRealTimeUs();
status_t start(bool sourceAlreadyStarted = false);
void pause(bool playPendingSamples = false);
void resume();
// Returns the timestamp of the last buffer played (in us).
int64_t getMediaTimeUs();
// Returns true iff a mapping is established, i.e. the AudioPlayerBase
// has played at least one frame of audio.
bool getMediaTimeMapping(int64_t *realtime_us, int64_t *mediatime_us);
status_t seekTo(int64_t time_us);
bool isSeeking();
bool reachedEOS(status_t *finalStatus);
private:
friend class VideoEditorAudioPlayer;
sp<MediaSource> mSource;
AudioTrack *mAudioTrack;
MediaBuffer *mInputBuffer;
int mSampleRate;
int64_t mLatencyUs;
size_t mFrameSize;
Mutex mLock;
int64_t mNumFramesPlayed;
int64_t mPositionTimeMediaUs;
int64_t mPositionTimeRealUs;
bool mSeeking;
bool mReachedEOS;
status_t mFinalStatus;
int64_t mSeekTimeUs;
bool mStarted;
bool mIsFirstBuffer;
status_t mFirstBufferResult;
MediaBuffer *mFirstBuffer;
sp<MediaPlayerBase::AudioSink> mAudioSink;
PreviewPlayerBase *mObserver;
static void AudioCallback(int event, void *user, void *info);
void AudioCallback(int event, void *info);
static size_t AudioSinkCallback(
MediaPlayerBase::AudioSink *audioSink,
void *data, size_t size, void *me);
size_t fillBuffer(void *data, size_t size);
int64_t getRealTimeUsLocked() const;
void reset();
uint32_t getNumFramesPendingPlayout() const;
AudioPlayerBase(const AudioPlayerBase &);
AudioPlayerBase &operator=(const AudioPlayerBase &);
};
} // namespace android
#endif // AUDIO_PLAYER_BASE_H_
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