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我正在開發一個原生的android項目，並嘗試使用OpenSL來播放一些音頻效果。使用VisualGDB提供的本地音頻樣例項目，我編寫了下面的代碼。OpenSL：通過AAsset_read加載wav文件時導致靜態的是什麼？
接近尾聲時，您可以看到我註釋了一行，它將緩存中名爲hello的變量的內容存儲到目標中。你好來自示例項目，幷包含大約700行字符像這樣：
「\ x02 \ x00 \ x01 \ x00 \ xff \ xff \ x09 \ x00 \ x0c \ x00 \ x10 \ x00 \ x07 \ x00 \ x07 \ x00「
其中有人說」你好「的音頻文件。當將該字節數據讀入流中時，我的代碼工作正常，並且在運行應用程序時聽到「hello」。然而，當我從wav文件讀取播放我想要的資產時，我只聽到靜止的聲音。數據緩衝區的大小與文件的大小相同，因此它看起來正在被正確讀取。靜態播放的wav文件（或非常接近它）的持續時間。
我對數據格式或音頻編程一無所知。我試着用不同的枚舉值調整一些format_pcm變量，但沒有成功。使用我在Internet上找到的名爲GSpot的工具，我知道以下關於我試圖播放的音頻文件：
文件大小：557 KB（570,503字節）（與數據緩衝區的大小相同 AAsset_read返回
編解碼器：PCM音頻
採樣率：48000Hz
比特率：1152 kb/s的
通道：1
任何幫助或方向將不勝感激。
SLDataLocator_AndroidSimpleBufferQueue loc_bufq = { SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 1 };
SLDataFormat_PCM format_pcm;
format_pcm.formatType = SL_DATAFORMAT_PCM;
format_pcm.numChannels = 1;
format_pcm.samplesPerSec = SL_SAMPLINGRATE_48;// SL_SAMPLINGRATE_8;
format_pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_8; // SL_PCMSAMPLEFORMAT_FIXED_16;
format_pcm.containerSize = 16;
format_pcm.channelMask = SL_SPEAKER_FRONT_CENTER;
format_pcm.endianness = SL_BYTEORDER_LITTLEENDIAN;
SLDataSource audioSrc = { &loc_bufq, &format_pcm };
// configure audio sink
SLDataLocator_OutputMix loc_outmix = { SL_DATALOCATOR_OUTPUTMIX, manager->GetOutputMixObject() };
SLDataSink audioSnk = { &loc_outmix, NULL };
//create audio player
const SLInterfaceID ids[3] = { SL_IID_BUFFERQUEUE, SL_IID_EFFECTSEND, SL_IID_VOLUME };
const SLboolean req[3] = { SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE };
SLEngineItf engineEngine = manager->GetEngine();
result = (*engineEngine)->CreateAudioPlayer(engineEngine, &bqPlayerObject, &audioSrc, &audioSnk,
3, ids, req);
// realize the player
result = (*bqPlayerObject)->Realize(bqPlayerObject, SL_BOOLEAN_FALSE);
// get the play interface
result = (*bqPlayerObject)->GetInterface(bqPlayerObject, SL_IID_PLAY, &bqPlayerPlay);
// get the buffer queue interface
result = (*bqPlayerObject)->GetInterface(bqPlayerObject, SL_IID_BUFFERQUEUE,
&bqPlayerBufferQueue);
// register callback on the buffer queue
result = (*bqPlayerBufferQueue)->RegisterCallback(bqPlayerBufferQueue, bqPlayerCallback, NULL);
// get the effect send interface
result = (*bqPlayerObject)->GetInterface(bqPlayerObject, SL_IID_EFFECTSEND,
&bqPlayerEffectSend);
// get the volume interface
result = (*bqPlayerObject)->GetInterface(bqPlayerObject, SL_IID_VOLUME, &bqPlayerVolume);
// set the player's state to playing
result = (*bqPlayerPlay)->SetPlayState(bqPlayerPlay, SL_PLAYSTATE_PLAYING);
uint8* pOutBytes = nullptr;
uint32 outSize = 0;
result = MyFileManager::GetInstance()->OpenFile(m_strAbsolutePath, (void**)&pOutBytes, &outSize, true);
const char* filename = m_strAbsolutePath->GetUTF8String();
result = (*bqPlayerBufferQueue)->Enqueue(bqPlayerBufferQueue, pOutBytes, outSize);
// result = (*bqPlayerBufferQueue)->Enqueue(bqPlayerBufferQueue, hello, sizeof(hello));
if (SL_RESULT_SUCCESS != result) {
return JNI_FALSE;
}