bool OpenAL::initInput(const QString& deviceName)
{
if (!Settings::getInstance().getAudioInDevEnabled())
return false;
qDebug() << "Opening audio input" << deviceName;
assert(!alInDev);
// TODO: Try to actually detect if our audio source is stereo
int stereoFlag = AUDIO_CHANNELS == 1 ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16;
const uint32_t sampleRate = AUDIO_SAMPLE_RATE;
const uint16_t frameDuration = AUDIO_FRAME_DURATION;
const uint32_t chnls = AUDIO_CHANNELS;
const ALCsizei bufSize = (frameDuration * sampleRate * 4) / 1000 * chnls;
const QByteArray qDevName = deviceName.toUtf8();
const ALchar* tmpDevName = qDevName.isEmpty() ? nullptr : qDevName.constData();
alInDev = alcCaptureOpenDevice(tmpDevName, sampleRate, stereoFlag, bufSize);
// Restart the capture if necessary
if (!alInDev) {
qWarning() << "Failed to initialize audio input device:" << deviceName;
return false;
}
setInputGain(Settings::getInstance().getAudioInGainDecibel());
qDebug() << "Opened audio input" << deviceName;
alcCaptureStart(alInDev);
return true;
}
void fsetInputGain (void *d, float f) {
setInputGain (d, (unsigned char)(f*127.0));
}
