超强动力安卓PlayBack &同步录制

Question

我正在开发混音器使用超强的安卓C++库，我得到的问题与播放器的同时录制，播放器不是播放，只有录音机是录音。下面是代码，有人能告诉我我把什么东西放在哪里了吗？

bool processRecording(short int *input, unsigned int numberOfSamples) {
pthread_mutex_lock(&mutex);
if (askRecording) {
    unsigned int data = 0;

       SuperpoweredShortIntToFloat(input, stereoBufferRecording, numberOfSamples);
       data = recorder->process(stereoBufferRecording, NULL, numberOfSamples);

       playerA->process( musicBuffer, false, numberOfSamples, 0.5f );
       SuperpoweredShortIntToFloat(input, stereoBufferRecording, numberOfSamples);

       SuperpoweredFloatToShortInt(musicBuffer, input, numberOfSamples);

       pthread_mutex_unlock(&mutex);
       return true;
       }
pthread_mutex_unlock(&mutex);
return false;
}

有没有人有办法把它放到合适的地方？

在@Gabor建议的更改之后，下面是代码片段

bool processRecording(short int *input, unsigned int numberOfSamples) {

pthread_mutex_lock(&mutex);
if (askRecording) {
    unsigned int data = 0;
    SuperpoweredShortIntToFloat(input, stereoBufferRecording, numberOfSamples);

    playerA->process( musicBuffer, false, numberOfSamples, 1.0f );

//=====================================================================================
 // ================== Mixing Two Buffer ==================

    mixerInputs[0] = musicBuffer;
    mixerInputs[1] = stereoBufferRecording;
    mixerInputs[2] = NULL;
    mixerInputs[3] = NULL;

    mixerOutputs[0] = outputBuffer;
    mixerOutputs[1] = NULL;

    float inputLevels[] = { 0.5f, 0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f };
    float outputLevels[] = { 1.0f, 1.0f };
    __android_log_print(ANDROID_LOG_INFO, "NativeSuperpoweredRecorder  ", " processRecording 2>>");
    mixerBackend->process(mixerInputs, mixerOutputs, inputLevels, outputLevels, NULL, NULL, numberOfSamples);

//=====================================================================================

    data = recorder->process(mixerOutputs[0], NULL, numberOfSamples);
    SuperpoweredFloatToShortInt(musicBuffer, input, numberOfSamples);
    pthread_mutex_unlock(&mutex);
    return true;
}
pthread_mutex_unlock(&mutex);

return false; }

Answer 1

这是您在代码中所做的：

输入->stereoBufferRecording>recorder

input->StereBufferRecording...

播放器->musicBuffer->输入

当askRecording为false时，播放器根本不播放。

我猜"input“和"output”也是同一个缓冲区吧？