int RtInOut( void* outputBuffer, void* inputBuffer, unsigned int framesPerBuffer,
double streamTime, RtAudioStreamStatus status, void *userdata )
{
if(!UNTZ::System::get()->getData()->isActive())
{
memset(outputBuffer, 0, sizeof(float) * framesPerBuffer * UNTZ::System::get()->getData()->getNumOutputChannels());
return 0;
}
if(status)
std::cout << "Stream underflow detected!" << std::endl;
AudioMixer *mixer = (AudioMixer*)userdata;
mixer->process(0, NULL, UNTZ::System::get()->getData()->getNumOutputChannels(), (float*)outputBuffer, framesPerBuffer);
// volume & clipping
// HBS
UInt32 samples = UNTZ::System::get()->getData()->getNumOutputChannels() * framesPerBuffer;
float volume = mixer->getVolume();
// TODO: doing an extra read/write here is painful...
float *outB = (float*)outputBuffer;
for (UInt32 k = 0; k < samples; ++k)
{
float val = *outB * volume;
val = val > 1.0 ? 1.0 : val;
val = val < -1.0 ? -1.0 : val;
*(outB)++ = val;
}
return 0;
}
int RtInOut( void* outputBuffer, void* inputBuffer, unsigned int framesPerBuffer,
double streamTime, RtAudioStreamStatus status, void *userdata )
{
LinuxSystemData *sysData = (LinuxSystemData *)userdata;
UInt32 numOutputChannels = UNTZ::System::get()->getData()->getNumOutputChannels();
UInt32 samples = numOutputChannels * framesPerBuffer;
if(!UNTZ::System::get()->getData()->isActive())
{
memset(outputBuffer, 0, sizeof(float) * samples);
return 0;
}
if(sysData->mOutputBuffer.size() < samples)
{
sysData->mOutputBuffer.resize(samples);
}
float *mixerOutputBuffer = (float*)&sysData->mOutputBuffer[0];
if(status)
std::cout << "Stream underflow detected!" << std::endl;
AudioMixer *mixer = &sysData->mMixer;
mixer->process(0, NULL, numOutputChannels, mixerOutputBuffer, framesPerBuffer);
// volume & clipping & interleaving
float volume = mixer->getVolume();
float *outB = (float*)outputBuffer;
for(UInt32 i=0; i<framesPerBuffer; i++)
{
for(UInt32 j=0; j<numOutputChannels; j++)
{
float val = volume * mixerOutputBuffer[j*framesPerBuffer+i];
val = val > 1.0 ? 1.0 : val;
val = val < -1.0 ? -1.0 : val;
*(outB)++ = val;
}
}
return 0;
}
void CSgSelectionPreparationBar::OnUpdateAudioSlider(CCmdUI *pCmdUI)
{
if (m_pAvGrabber &&
m_pAvGrabber->getAudioMixer() &&
m_pAvGrabber->getAudioMixer()->getSourceCount() > 0)
pCmdUI->Enable(true);
else
pCmdUI->Enable(false);
if (m_pAvGrabber && GetKeyState(VK_LBUTTON) >= 0) // left mouse not key pressed)
{
AudioMixer *pAudioMixer = m_pAvGrabber->getAudioMixer();
if (pAudioMixer) {
UINT nMixerVolume = pAudioMixer->getVolume();
if (nMixerVolume < 0)
nMixerVolume = 0;
if (nMixerVolume > 100)
nMixerVolume = 100;
m_sldAudioInputLevel.SetPos(100 - nMixerVolume);
}
}
}
