代码的对比

标签：lin   ali   order   fallback   调用   tput   audio   cms   color   

错误的代码：

//1.创建引擎
SLEngineItf eng = CreateSL();


//2.创建输出设备
SLObjectItf mix = NULL;
(*eng)->CreateOutputMix(eng , &mix ,0 ,0 ,0);
//实例化mix
(*mix)->Realize(mix , SL_BOOLEAN_FALSE);
//配置输出设备
SLDataLocator_OutputMix outMix = {SL_DATALOCATOR_OUTPUTMIX , mix};
SLDataSink audioSink = {&outMix , 0};
//配置PCM格式信息
//缓冲格式
SLDataLocator_AndroidSimpleBufferQueue queue = {SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE
        , 10};
//音频格式
SLDataFormat_PCM pcm = {
        SL_DATAFORMAT_PCM,
        2,
        SL_SAMPLINGRATE_44_1,
        SL_PCMSAMPLEFORMAT_FIXED_16,
        SL_PCMSAMPLEFORMAT_FIXED_16,
        SL_SPEAKER_BACK_LEFT | SL_SPEAKER_BACK_RIGHT,  //SL_SPEAKER_BACK_RIGHT,
        SL_BYTEORDER_LITTLEENDIAN    //字节序,小断------还有大段

};

SLDataSource ds = {&queue , &pcm};



//创建播放器
SLObjectItf player = NULL;
SLPlayItf iplayer = NULL ;
const SLInterfaceID  ids[] = {SL_IID_BUFFERQUEUE};
const SLboolean  req[] = {SL_BOOLEAN_TRUE};
(*eng)->CreateAudioPlayer(eng,&player,&ds,&audioSink,sizeof(ids)/sizeof(SLInterfaceID),ids,req); //如果只用player接口就不用传其他
//实例化播放器                                                       //参数，因为调用到内部类的接口，
(*player)->Realize(player ,SL_BOOLEAN_FALSE);                      //所以必须传入其他参数
//获取接口
(*player)->GetInterface(player, SL_IID_PLAY, &iplayer);


//获取队列的接口
SLAndroidSimpleBufferQueueItf pcmQue = NULL;
(*player)->GetInterface(player, SL_IID_BUFFERQUEUE, &pcmQue);

//设置回调函数
(*pcmQue)->RegisterCallback(pcmQue, PcmCall, 0);

//设置播放状态
(*iplayer)->SetPlayState(iplayer , SL_PLAYSTATE_PLAYING);

//启动队列回调
(*pcmQue)->Enqueue(pcmQue , " ",1);

代码的对比

标签：lin   ali   order   fallback   调用   tput   audio   cms   color   

原文地址：https://www.cnblogs.com/liunx1109/p/9283337.html