/// ------------------------------
/// PROCESS
/// ------------------------------
void TimedFader::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
float max1 = 0;
float max2 = 0;
VstTimeInfo* timeInfo = NULL;
bool audioIsPlaying = true;
--in1;
--in2;
--out1;
--out2;
VstInt32 maxCounter = sampleFrames;
while (--maxCounter >= 0)
{
if (fabs(inputs[0][maxCounter]) > max1)
{
max1 = fabs(inputs[0][maxCounter]);
}
if (fabs(inputs[1][maxCounter]) > max2)
{
max2 = fabs(inputs[1][maxCounter]);
}
}
if (max1 < 0.000001 && max2 < 0.000001)
{
audioIsPlaying = false;
}
// In any state, if no audio is playing, go to Idle
if (!audioIsPlaying)
{
state = STATE_IDLE;
}
switch (state)
{
case STATE_PLAYING:
// Do nothing else, just let audio play
while (fPlaySecondsRemaining > 0.0 && --sampleFrames >= 0)
{
fPlaySecondsRemaining -= fSecondsPerFrame;
// let audio pass through
*++out1 = *++in1 * 1.0;
*++out2 = *++in2 * 1.0;
}
if (fPlaySecondsRemaining <= 0.0)
{
state = STATE_FADING;
}
faderDisplay->setParameter(PARAM_PlaySecondsRemaining, fPlaySecondsRemaining);
break;
case STATE_FADING:
while (fFadeSecondsRemaining > 0.0 && --sampleFrames >= 0)
{
currentFaderFrameCount++;
fFadeSecondsRemaining -= fSecondsPerFrame;
// Fade based on current fade tap
currentFaderMultiplier = GetNextFaderStep();
*++out1 = *++in1 * currentFaderMultiplier;
*++out2 = *++in2 * currentFaderMultiplier;
}
if (fFadeSecondsRemaining <= 0.0)
{
// silence out the rest of the sample
while (--sampleFrames >= 0)
{
*++out1 = *++in1 * muteGain;
*++out2 = *++in2 * muteGain;
}
faderDisplay->setParameter(PARAM_FaderLight, 1);
state = STATE_DONE;
}
faderDisplay->setParameter(PARAM_FadeSecondsRemaining, fFadeSecondsRemaining);
break;
case STATE_DONE:
fPlaySecondsRemaining = fPlayDuration;
fFadeSecondsRemaining = fFadeDuration;
// make sure the audio stays muted
// and wait here until all audio stops playing, then move back to Idle
while (--sampleFrames >= 0)
{
*++out1 = *++in1 * muteGain;
*++out2 = *++in2 * muteGain;
}
break;
case STATE_IDLE:
// Set these here again in case someone changed the durations while we are in the IDLE state
currentFaderFrameCount = 1;
fPlaySecondsRemaining = fPlayDuration;
fFadeSecondsRemaining = fFadeDuration;
faderDisplay->setParameter(PARAM_PlaySecondsRemaining, fPlayDuration);
faderDisplay->setParameter(PARAM_FadeSecondsRemaining, fFadeDuration);
faderDisplay->setParameter(PARAM_FaderLight, 0);
/* Wish this worked...
//timeInfo = getTimeInfo(kVstTransportPlaying | kVstTransportChanged);
if (timeInfo != NULL && (timeInfo->flags & kVstTransportPlaying) )
{
// start playing
state = STATE_PLAYING;
} */
// Instead, messy hack:
if (fabs(inputs[0][0]) > 0.0000001 && fabs(inputs[1][0]) > 0.0000001)
{
// Audio is coming through, start the timer...
state = STATE_PLAYING;
}
break;
}
}
//---------------------------------------------------------------------------
HRESULT VDJ_API TimedFader::OnProcessSamples(float *buffer, int nb)
{
// ADD YOUR AUDIO TREATMENT CODE HERE USING THE AUDIO BUFFER *buffer OF 2*nb FLOAT SAMPLES (STEREO SIGNAL)
float out[2], in[2];
float max1 = 0;
float max2 = 0;
bool audioIsPlaying = true;
// Check the current buffer for any audio, if none, audio is not playing
for (int i = 0; i<nb; i++)
{
in[0] = buffer[2 * i];
in[1] = buffer[2 * i + 1];
if (fabs(in[0]) > max1)
{
max1 = fabs(in[0]);
}
if (fabs(in[1]) > max2)
{
max2 = fabs(in[1]);
}
}
if (max1 < 0.000001 && max2 < 0.000001)
{
audioIsPlaying = false;
}
// In any state, if no audio is playing, go to Idle
if (!audioIsPlaying)
{
state = STATE_IDLE;
}
int index = 0;
switch (state)
{
case STATE_PLAYING:
// Do nothing else, just let audio play
while (fPlaySecondsRemaining > 0.0 && index < nb)
{
/*in[0] = buffer[2 * index];
in[1] = buffer[2 * index + 1];
*/
fPlaySecondsRemaining -= fSecondsPerFrame;
// let audio pass through
/*
buffer[2 * index] = in[0] * 1.0;
buffer[2 * index + 1] = in[1] * 1.0;
*/
index++;
}
if (fPlaySecondsRemaining <= 0.0)
{
state = STATE_FADING;
}
//faderDisplay->setParameter(PARAM_PlaySecondsRemaining, fPlaySecondsRemaining);
break;
case STATE_FADING:
while (fFadeSecondsRemaining > 0.0 && index < nb)
{
currentFaderFrameCount++;
fFadeSecondsRemaining -= fSecondsPerFrame;
// Fade based on current fade tap
currentFaderMultiplier = GetNextFaderStep();
in[0] = buffer[2 * index];
in[1] = buffer[2 * index + 1];
out[0] = in[0] * currentFaderMultiplier;
out[1] = in[1] * currentFaderMultiplier;
buffer[2 * index] = out[0];
buffer[2 * index + 1] = out[1];
index++;
}
if (fFadeSecondsRemaining <= 0.0)
{
// silence out the rest of the sample
for (int i = 0; i < nb; i++)
{
buffer[2 * i] *= muteGain;
buffer[2 * i + 1] *= muteGain;
}
//faderDisplay->setParameter(PARAM_FaderLight, 1);
state = STATE_DONE;
}
//faderDisplay->setParameter(PARAM_FadeSecondsRemaining, fFadeSecondsRemaining);
break;
case STATE_DONE:
fPlaySecondsRemaining = fPlayDuration;
fFadeSecondsRemaining = fFadeDuration;
// make sure the audio stays muted
// and wait here until all audio stops playing, then move back to Idle
for (int i = 0; i < nb; i++)
{
buffer[2 * i] *= muteGain;
buffer[2 * i + 1] *= muteGain;
}
break;
case STATE_IDLE:
// Set these here again in case someone changed the durations while we are in the IDLE state
currentFaderFrameCount = 1;
fPlaySecondsRemaining = fPlayDuration;
fFadeSecondsRemaining = fFadeDuration;
//faderDisplay->setParameter(PARAM_PlaySecondsRemaining, fPlayDuration);
//faderDisplay->setParameter(PARAM_FadeSecondsRemaining, fFadeDuration);
//faderDisplay->setParameter(PARAM_FaderLight, 0);
// Instead, messy hack:
//if (fabs(buffer[0]) > 0.0000001 && fabs(buffer[1]) > 0.0000001)
if (audioIsPlaying)
{
// Audio is coming through, start the timer...
state = STATE_PLAYING;
}
break;
}
UpdateDisplay();
return S_OK;
}
