bool EngineDeck::isActive() {
if (m_bPassthroughWasActive && !m_bPassthroughIsActive) {
return true;
}
return (m_pBuffer->isTrackLoaded() || isPassthroughActive());
}
bool EngineDeck::isActive() {
bool active = false;
if (m_bPassthroughWasActive && !m_bPassthroughIsActive) {
active = true;
} else {
active = m_pBuffer->isTrackLoaded() || isPassthroughActive();
}
if (!active && m_wasActive) {
m_pVUMeter->reset();
}
m_wasActive = active;
return active;
}
void EngineDeck::process(const CSAMPLE*, CSAMPLE* pOut, const int iBufferSize) {
CSAMPLE* pOutput = const_cast<CSAMPLE*>(pOut);
// Feed the incoming audio through if passthrough is active
if (isPassthroughActive()) {
int samplesRead = m_sampleBuffer.read(pOut, iBufferSize);
if (samplesRead < iBufferSize) {
// Buffer underflow. There aren't getting samples fast enough. This
// shouldn't happen since PortAudio should feed us samples just as fast
// as we consume them, right?
qWarning() << "ERROR: Buffer overflow in EngineDeck. Playing silence.";
SampleUtil::applyGain(pOut + samplesRead, 0.0, iBufferSize - samplesRead);
}
m_bPassthroughWasActive = true;
} else {
// If passthrough is no longer enabled, zero out the buffer
if (m_bPassthroughWasActive) {
SampleUtil::applyGain(pOut, 0.0, iBufferSize);
m_sampleBuffer.skip(iBufferSize);
m_bPassthroughWasActive = false;
return;
}
// Process the raw audio
m_pBuffer->process(0, pOut, iBufferSize);
// Emulate vinyl sounds
m_pVinylSoundEmu->process(pOut, pOut, iBufferSize);
m_bPassthroughWasActive = false;
}
// Apply pregain
m_pPregain->process(pOut, pOut, iBufferSize);
// Filter the channel with EQs
m_pFilter->process(pOut, pOut, iBufferSize);
m_pFlanger->process(pOut, pOut, iBufferSize);
m_pFilterEffect->process(pOut, pOut, iBufferSize);
// Process effects enabled for this channel
m_pEffectsManager->process(getGroup(), pOut, pOutput, iBufferSize);
// Apply clipping
m_pClipping->process(pOut, pOut, iBufferSize);
// Update VU meter
m_pVUMeter->process(pOut, pOut, iBufferSize);
}
void EngineDeck::process(CSAMPLE* pOut, const int iBufferSize) {
GroupFeatureState features;
// Feed the incoming audio through if passthrough is active
const CSAMPLE* sampleBuffer = m_sampleBuffer; // save pointer on stack
if (isPassthroughActive() && sampleBuffer) {
SampleUtil::copy(pOut, sampleBuffer, iBufferSize);
m_bPassthroughWasActive = true;
m_sampleBuffer = NULL;
m_pPregain->setSpeed(1);
m_pPregain->setScratching(false);
} else {
// If passthrough is no longer enabled, zero out the buffer
if (m_bPassthroughWasActive) {
SampleUtil::clear(pOut, iBufferSize);
m_bPassthroughWasActive = false;
return;
}
// Process the raw audio
m_pBuffer->process(pOut, iBufferSize);
m_pBuffer->collectFeatures(&features);
m_pPregain->setSpeed(m_pBuffer->getSpeed());
m_pPregain->setScratching(m_pBuffer->getScratching());
m_bPassthroughWasActive = false;
}
// Apply pregain
m_pPregain->process(pOut, iBufferSize);
// Process effects enabled for this channel
if (m_pEngineEffectsManager != NULL) {
// This is out of date by a callback but some effects will want the RMS
// volume.
m_pVUMeter->collectFeatures(&features);
m_pEngineEffectsManager->process(
getHandle(), pOut, iBufferSize,
static_cast<unsigned int>(m_pSampleRate->get()), features);
}
// Update VU meter
m_pVUMeter->process(pOut, iBufferSize);
}
void EngineDeck::process(CSAMPLE* pOut, const int iBufferSize) {
GroupFeatureState features;
// Feed the incoming audio through if passthrough is active
const CSAMPLE* sampleBuffer = m_sampleBuffer; // save pointer on stack
if (isPassthroughActive() && sampleBuffer) {
memcpy(pOut, sampleBuffer, iBufferSize * sizeof(pOut[0]));
m_bPassthroughWasActive = true;
m_sampleBuffer = NULL;
} else {
// If passthrough is no longer enabled, zero out the buffer
if (m_bPassthroughWasActive) {
SampleUtil::clear(pOut, iBufferSize);
m_bPassthroughWasActive = false;
return;
}
// Process the raw audio
m_pBuffer->process(pOut, iBufferSize);
m_pBuffer->collectFeatures(&features);
// Emulate vinyl sounds
m_pVinylSoundEmu->setSpeed(m_pBuffer->getSpeed());
m_pVinylSoundEmu->process(pOut, iBufferSize);
m_bPassthroughWasActive = false;
}
// Apply pregain
m_pPregain->process(pOut, iBufferSize);
// Filter the channel with EQs
m_pFilter->process(pOut, iBufferSize);
// Process effects enabled for this channel
if (m_pEngineEffectsManager != NULL) {
// This is out of date by a callback but some effects will want the RMS
// volume.
m_pVUMeter->collectFeatures(&features);
m_pEngineEffectsManager->process(getGroup(), pOut, iBufferSize,
features);
}
// Update VU meter
m_pVUMeter->process(pOut, iBufferSize);
}
