C++ (Cpp) TPCircularBufferPrepareEmptyAudioBufferList示例

示例#1

文件： TPCircularBuffer+AudioBufferList.c 项目： pettyfun/TPCircularBuffer

bool TPCircularBufferCopyAudioBufferList(TPCircularBuffer *buffer, const AudioBufferList *inBufferList, const AudioTimeStamp *inTimestamp, UInt32 frames, AudioStreamBasicDescription *audioDescription) {

    int byteCount = inBufferList->mBuffers[0].mDataByteSize;
    if ( frames != kTPCircularBufferCopyAll ) {
        byteCount = frames * audioDescription->mBytesPerFrame;
        assert(byteCount <= inBufferList->mBuffers[0].mDataByteSize);
    }
    
    AudioBufferList *bufferList = TPCircularBufferPrepareEmptyAudioBufferList(buffer, inBufferList->mNumberBuffers, byteCount, inTimestamp);
    if ( !bufferList ) return false;
    
    for ( int i=0; i<bufferList->mNumberBuffers; i++ ) {
        memcpy(bufferList->mBuffers[i].mData, inBufferList->mBuffers[i].mData, byteCount);
    }
    
    TPCircularBufferProduceAudioBufferList(buffer, NULL);
    
    return true;
}

示例#2

文件： TPCircularBuffer+AudioBufferList.c 项目： thinkey/TheAmazingAudioEngine

AudioBufferList *TPCircularBufferPrepareEmptyAudioBufferListWithAudioFormat(TPCircularBuffer *buffer, AudioStreamBasicDescription *audioFormat, UInt32 frameCount, const AudioTimeStamp *timestamp) {
    return TPCircularBufferPrepareEmptyAudioBufferList(buffer,
                                                       (audioFormat->mFormatFlags & kAudioFormatFlagIsNonInterleaved) ? audioFormat->mChannelsPerFrame : 1,
                                                       audioFormat->mBytesPerFrame * frameCount,
                                                       timestamp);
}