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/*
* Copyright (C) 2010 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.
*/
/** \file CAudioPlayer.c AudioPlayer class */
#include "sles_allinclusive.h"
/** \brief Hook called by Object::Realize when an audio player is realized */
SLresult CAudioPlayer_Realize(void *self, SLboolean async)
{
CAudioPlayer *this = (CAudioPlayer *) self;
SLresult result = SL_RESULT_SUCCESS;
// initialize cached data, to be overwritten by platform-specific initialization
this->mNumChannels = 0;
#ifdef ANDROID
result = android_audioPlayer_realize(this, async);
#endif
#ifdef USE_SNDFILE
result = SndFile_Realize(this);
#endif
return result;
}
/** \brief Hook called by Object::Resume when an audio player is resumed */
SLresult CAudioPlayer_Resume(void *self, SLboolean async)
{
return SL_RESULT_SUCCESS;
}
/** \brief Hook called by Object::Destroy when an audio player is destroyed */
void CAudioPlayer_Destroy(void *self)
{
CAudioPlayer *this = (CAudioPlayer *) self;
freeDataLocatorFormat(&this->mDataSource);
freeDataLocatorFormat(&this->mDataSink);
IBufferQueue_Destroy(&this->mBufferQueue);
#ifdef USE_SNDFILE
SndFile_Destroy(this);
#endif
#ifdef ANDROID
android_audioPlayer_destroy(this);
#endif
}
/** \brief Hook called by Object::Destroy before an audio player is about to be destroyed */
bool CAudioPlayer_PreDestroy(void *self)
{
#ifdef USE_OUTPUTMIXEXT
CAudioPlayer *this = (CAudioPlayer *) self;
// Safe to proceed immediately if a track has not yet been assigned
Track *track = this->mTrack;
if (NULL == track)
return true;
// FIXME We're reading from track without taking even a share lock on it
CAudioPlayer *audioPlayer = track->mAudioPlayer;
if (NULL == audioPlayer)
return true;
assert(audioPlayer == this);
// Request the mixer thread to unlink this audio player's track
this->mDestroyRequested = true;
while (this->mDestroyRequested) {
object_cond_wait(self);
}
// Mixer thread has acknowledged the request
#endif
return true;
}
/** \brief Given an audio player, return its data sink, which is guaranteed to be a non-NULL output
* mix. This function is used by effect send.
*/
COutputMix *CAudioPlayer_GetOutputMix(CAudioPlayer *audioPlayer)
{
assert(NULL != audioPlayer);
assert(SL_DATALOCATOR_OUTPUTMIX == audioPlayer->mDataSink.mLocator.mLocatorType);
SLObjectItf outputMix = audioPlayer->mDataSink.mLocator.mOutputMix.outputMix;
assert(NULL != outputMix);
return (COutputMix *) outputMix;
}
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