INT32 DAUDIO_GetDirectAudioDeviceCount() {
return (INT32) getAudioDeviceCount();
}
int startNativeAudio(int inDeviceId, unsigned int channels) {
if(getAudioDeviceCount() < 1) {
return -1;
}
// stop before
stopNativeAudio();
// create new
audio = new RtAudio();
std::cout << "RtAudio Version " << RtAudio::getVersion() << std::endl;
if(inDeviceId<0) {
inDeviceId = audio->getDefaultInputDevice();
}
RtAudio::DeviceInfo deviceInfo = audio->getDeviceInfo(inDeviceId);
unsigned int bufferFrames = _BUFFER_FRAMES;
unsigned int sampleRate = _SAMPLE_RATE;
if(channels > deviceInfo.inputChannels) {
channels = deviceInfo.inputChannels;
}
// make input parameters
RtAudio::StreamParameters iParams;
iParams.deviceId = inDeviceId;
iParams.nChannels = channels;
iParams.firstChannel = 0;
// stream options
RtAudio::StreamOptions options;
// options.flags |= RTAUDIO_NONINTERLEAVED;
bufferBytes = bufferFrames * channels * sizeof(MY_TYPE);
// TODO
bufferLength = channels * _SAMPLE_RATE;
currentBufferIndex = 0;
audioBuffer = (MY_TYPE*)malloc(bufferLength * sizeof(MY_TYPE));
if(audioBuffer == NULL) {
stopNativeAudio();
return -1;
}
try {
audio->openStream(NULL, &iParams, RT_FORMAT, sampleRate, &bufferFrames, &input, (void*)&data, &options);
}
catch (RtError& e) {
std::cout << e.getMessage() << std::endl;
stopNativeAudio();
return -1;
}
data.bufferBytes = bufferBytes;
data.channels = channels;
try {
audio->startStream();
}
catch (RtError& e) {
std::cout << e.getMessage() << std::endl;
stopNativeAudio();
return -1;
}
return 0; // success
}
