bool LV2Effect::Process()
{
CopyInputTracks();
bool bGoodResult = true;
TrackListIterator iter(mOutputTracks);
int count = 0;
Track *left = iter.First();
Track *right = NULL;
while (left)
{
sampleCount lstart = 0, rstart = 0;
sampleCount len;
GetSamples((WaveTrack *)left, &lstart, &len);
right = NULL;
if (left->GetLinked() && mAudioInputs.GetCount() > 1)
{
right = iter.Next();
GetSamples((WaveTrack *)right, &rstart, &len);
}
if (mAudioInputs.GetCount() < 2 && right)
{
// If the effect is mono, apply to each channel separately
bGoodResult = ProcessStereo(count, (WaveTrack *)left, NULL,
lstart, 0, len) &&
ProcessStereo(count, (WaveTrack *)right, NULL,
rstart, 0, len);
}
else
{
bGoodResult = ProcessStereo(count,
(WaveTrack *)left, (WaveTrack *)right,
lstart, rstart, len);
}
if (!bGoodResult)
{
break;
}
left = iter.Next();
count++;
}
ReplaceProcessedTracks(bGoodResult);
return bGoodResult;
}
bool EffectTruncSilence::DoRemoval
(const RegionList &silences, unsigned iGroup, unsigned nGroups, Track *firstTrack, Track *lastTrack,
double &totalCutLen)
{
//
// Now remove the silent regions from all selected / sync-lock selected tracks.
//
// Loop over detected regions in reverse (so cuts don't change time values
// down the line)
int whichReg = 0;
RegionList::const_reverse_iterator rit;
for (rit = silences.rbegin(); rit != silences.rend(); ++rit)
{
const Region ®ion = *rit;
const Region *const r = ®ion;
// Progress dialog and cancellation. Do additional cleanup before return.
const double frac = detectFrac +
(1 - detectFrac) * (iGroup + whichReg / double(silences.size())) / nGroups;
if (TotalProgress(frac))
{
ReplaceProcessedTracks(false);
return false;
}
// Intersection may create regions smaller than allowed; ignore them.
// Allow one nanosecond extra for consistent results with exact milliseconds of allowed silence.
if ((r->end - r->start) < (mInitialAllowedSilence - 0.000000001))
continue;
// Find NEW silence length as requested
double inLength = r->end - r->start;
double outLength;
switch (mActionIndex)
{
case kTruncate:
outLength = std::min(mTruncLongestAllowedSilence, inLength);
break;
case kCompress:
outLength = mInitialAllowedSilence +
(inLength - mInitialAllowedSilence) * mSilenceCompressPercent / 100.0;
break;
default: // Not currently used.
outLength = std::min(mInitialAllowedSilence +
(inLength - mInitialAllowedSilence) * mSilenceCompressPercent / 100.0,
mTruncLongestAllowedSilence);
}
double cutLen = inLength - outLength;
totalCutLen += cutLen;
TrackListIterator iterOut(mOutputTracks);
bool lastSeen = false;
for (Track *t = iterOut.StartWith(firstTrack); t && !lastSeen; t = iterOut.Next())
{
lastSeen = (t == lastTrack);
if (!(t->GetSelected() || t->IsSyncLockSelected()))
continue;
// Don't waste time past the end of a track
if (t->GetEndTime() < r->start)
continue;
double cutStart = (r->start + r->end - cutLen) / 2;
double cutEnd = cutStart + cutLen;
if (t->GetKind() == Track::Wave)
{
// In WaveTracks, clear with a cross-fade
WaveTrack *const wt = static_cast<WaveTrack*>(t);
sampleCount blendFrames = mBlendFrameCount;
// Round start/end times to frame boundaries
cutStart = wt->LongSamplesToTime(wt->TimeToLongSamples(cutStart));
cutEnd = wt->LongSamplesToTime(wt->TimeToLongSamples(cutEnd));
// Make sure the cross-fade does not affect non-silent frames
if (wt->LongSamplesToTime(blendFrames) > inLength)
{
blendFrames = wt->TimeToLongSamples(inLength);
}
// Perform cross-fade in memory
float *buf1 = new float[blendFrames];
float *buf2 = new float[blendFrames];
sampleCount t1 = wt->TimeToLongSamples(cutStart) - blendFrames / 2;
sampleCount t2 = wt->TimeToLongSamples(cutEnd) - blendFrames / 2;
wt->Get((samplePtr)buf1, floatSample, t1, blendFrames);
wt->Get((samplePtr)buf2, floatSample, t2, blendFrames);
for (sampleCount i = 0; i < blendFrames; ++i)
{
buf1[i] = ((blendFrames-i) * buf1[i] + i * buf2[i]) /
(double)blendFrames;
}
// Perform the cut
wt->Clear(cutStart, cutEnd);
// Write cross-faded data
wt->Set((samplePtr)buf1, floatSample, t1, blendFrames);
delete [] buf1;
delete [] buf2;
}
else
// Non-wave tracks: just do a sync-lock adjust
t->SyncLockAdjust(cutEnd, cutStart);
}
++whichReg;
}
return true;
}
bool EffectChangeSpeed::Process()
{
// Similar to EffectSoundTouch::Process()
// Iterate over each track.
// Track::All is needed because this effect needs to introduce
// silence in the sync-lock group tracks to keep sync
this->CopyInputTracks(Track::All); // Set up mOutputTracks.
bool bGoodResult = true;
TrackListIterator iter(mOutputTracks);
Track* t;
mCurTrackNum = 0;
mMaxNewLength = 0.0;
mFactor = 100.0 / (100.0 + mPercentChange);
t = iter.First();
while (t != NULL)
{
if (t->GetKind() == Track::Label) {
if (t->GetSelected() || t->IsSyncLockSelected())
{
if (!ProcessLabelTrack(t)) {
bGoodResult = false;
break;
}
}
}
else if (t->GetKind() == Track::Wave && t->GetSelected())
{
WaveTrack *pOutWaveTrack = (WaveTrack*)t;
//Get start and end times from track
mCurT0 = pOutWaveTrack->GetStartTime();
mCurT1 = pOutWaveTrack->GetEndTime();
//Set the current bounds to whichever left marker is
//greater and whichever right marker is less:
mCurT0 = wxMax(mT0, mCurT0);
mCurT1 = wxMin(mT1, mCurT1);
// Process only if the right marker is to the right of the left marker
if (mCurT1 > mCurT0) {
//Transform the marker timepoints to samples
sampleCount start = pOutWaveTrack->TimeToLongSamples(mCurT0);
sampleCount end = pOutWaveTrack->TimeToLongSamples(mCurT1);
//ProcessOne() (implemented below) processes a single track
if (!ProcessOne(pOutWaveTrack, start, end))
{
bGoodResult = false;
break;
}
}
mCurTrackNum++;
}
else if (t->IsSyncLockSelected())
{
t->SyncLockAdjust(mT1, mT0 + (mT1 - mT0) * mFactor);
}
//Iterate to the next track
t=iter.Next();
}
if (bGoodResult)
ReplaceProcessedTracks(bGoodResult);
mT1 = mT0 + mMaxNewLength; // Update selection.
return bGoodResult;
}
bool EffectAutoDuck::Process()
{
sampleCount i;
if (GetNumWaveTracks() == 0 || !mControlTrack)
return false;
bool cancel = false;
sampleCount start =
mControlTrack->TimeToLongSamples(mT0 + mOuterFadeDownLen);
sampleCount end =
mControlTrack->TimeToLongSamples(mT1 - mOuterFadeUpLen);
if (end <= start)
return false;
// the minimum number of samples we have to wait until the maximum
// pause has been exceeded
double maxPause = mMaximumPause;
// We don't fade in until we have time enough to actually fade out again
if (maxPause < mOuterFadeDownLen + mOuterFadeUpLen)
maxPause = mOuterFadeDownLen + mOuterFadeUpLen;
sampleCount minSamplesPause =
mControlTrack->TimeToLongSamples(maxPause);
double threshold = DB_TO_LINEAR(mThresholdDb);
// adjust the threshold so we can compare it to the rmsSum value
threshold = threshold * threshold * kRMSWindowSize;
int rmsPos = 0;
float rmsSum = 0;
float *rmsWindow = new float[kRMSWindowSize];
for (i = 0; i < kRMSWindowSize; i++)
rmsWindow[i] = 0;
float *buf = new float[kBufSize];
bool inDuckRegion = false;
// initialize the following two variables to prevent compiler warning
double duckRegionStart = 0;
sampleCount curSamplesPause = 0;
// to make the progress bar appear more natural, we first look for all
// duck regions and apply them all at once afterwards
AutoDuckRegionArray regions;
sampleCount pos = start;
while (pos < end)
{
sampleCount len = end - pos;
if (len > kBufSize)
len = kBufSize;
mControlTrack->Get((samplePtr)buf, floatSample, pos, (sampleCount)len);
for (i = pos; i < pos + len; i++)
{
rmsSum -= rmsWindow[rmsPos];
rmsWindow[rmsPos] = buf[i - pos] * buf[i - pos];
rmsSum += rmsWindow[rmsPos];
rmsPos = (rmsPos + 1) % kRMSWindowSize;
bool thresholdExceeded = rmsSum > threshold;
if (thresholdExceeded)
{
// everytime the threshold is exceeded, reset our count for
// the number of pause samples
curSamplesPause = 0;
if (!inDuckRegion)
{
// the threshold has been exceeded for the first time, so
// let the duck region begin here
inDuckRegion = true;
duckRegionStart = mControlTrack->LongSamplesToTime(i);
}
}
if (!thresholdExceeded && inDuckRegion)
{
// the threshold has not been exceeded and we are in a duck
// region, but only fade in if the maximum pause has been
// exceeded
curSamplesPause += 1;
if (curSamplesPause >= minSamplesPause)
{
// do the actual duck fade and reset all values
double duckRegionEnd =
mControlTrack->LongSamplesToTime(i - curSamplesPause);
regions.Add(AutoDuckRegion(
duckRegionStart - mOuterFadeDownLen,
duckRegionEnd + mOuterFadeUpLen));
inDuckRegion = false;
}
}
}
pos += len;
if (TotalProgress( ((double)(pos-start)) / (end-start) /
(GetNumWaveTracks() + 1) ))
{
cancel = true;
break;
}
}
// apply last duck fade, if any
if (inDuckRegion)
{
double duckRegionEnd =
mControlTrack->LongSamplesToTime(end - curSamplesPause);
regions.Add(AutoDuckRegion(
duckRegionStart - mOuterFadeDownLen,
duckRegionEnd + mOuterFadeUpLen));
}
delete[] buf;
delete[] rmsWindow;
if (!cancel)
{
CopyInputTracks(); // Set up mOutputTracks.
SelectedTrackListOfKindIterator iter(Track::Wave, mOutputTracks);
Track *iterTrack = iter.First();
int trackNumber = 0;
while (iterTrack)
{
wxASSERT(iterTrack->GetKind() == Track::Wave);
WaveTrack* t = (WaveTrack*)iterTrack;
for (i = 0; i < (int)regions.GetCount(); i++)
{
const AutoDuckRegion& region = regions[i];
if (ApplyDuckFade(trackNumber, t, region.t0, region.t1))
{
cancel = true;
break;
}
}
if (cancel)
break;
iterTrack = iter.Next();
trackNumber++;
}
}
ReplaceProcessedTracks(!cancel);
return !cancel;
}
bool EffectSBSMS::Process()
{
bool bGoodResult = true;
//Iterate over each track
//Track::All is needed because this effect needs to introduce silence in the group tracks to keep sync
this->CopyInputTracks(Track::All); // Set up mOutputTracks.
TrackListIterator iter(mOutputTracks);
Track* t;
mCurTrackNum = 0;
double maxDuration = 0.0;
// Must sync if selection length will change
bool mustSync = (rateStart != rateEnd);
Slide rateSlide(rateSlideType,rateStart,rateEnd);
Slide pitchSlide(pitchSlideType,pitchStart,pitchEnd);
mTotalStretch = rateSlide.getTotalStretch();
t = iter.First();
while (t != NULL) {
if (t->GetKind() == Track::Label &&
(t->GetSelected() || (mustSync && t->IsSyncLockSelected())) )
{
if (!ProcessLabelTrack(t)) {
bGoodResult = false;
break;
}
}
else if (t->GetKind() == Track::Wave && t->GetSelected() )
{
WaveTrack* leftTrack = (WaveTrack*)t;
//Get start and end times from track
mCurT0 = leftTrack->GetStartTime();
mCurT1 = leftTrack->GetEndTime();
//Set the current bounds to whichever left marker is
//greater and whichever right marker is less
mCurT0 = wxMax(mT0, mCurT0);
mCurT1 = wxMin(mT1, mCurT1);
// Process only if the right marker is to the right of the left marker
if (mCurT1 > mCurT0) {
sampleCount start;
sampleCount end;
start = leftTrack->TimeToLongSamples(mCurT0);
end = leftTrack->TimeToLongSamples(mCurT1);
WaveTrack* rightTrack = NULL;
if (leftTrack->GetLinked()) {
double t;
rightTrack = (WaveTrack*)(iter.Next());
//Adjust bounds by the right tracks markers
t = rightTrack->GetStartTime();
t = wxMax(mT0, t);
mCurT0 = wxMin(mCurT0, t);
t = rightTrack->GetEndTime();
t = wxMin(mT1, t);
mCurT1 = wxMax(mCurT1, t);
//Transform the marker timepoints to samples
start = leftTrack->TimeToLongSamples(mCurT0);
end = leftTrack->TimeToLongSamples(mCurT1);
mCurTrackNum++; // Increment for rightTrack, too.
}
sampleCount trackStart = leftTrack->TimeToLongSamples(leftTrack->GetStartTime());
sampleCount trackEnd = leftTrack->TimeToLongSamples(leftTrack->GetEndTime());
// SBSMS has a fixed sample rate - we just convert to its sample rate and then convert back
float srTrack = leftTrack->GetRate();
float srProcess = bLinkRatePitch?srTrack:44100.0;
// the resampler needs a callback to supply its samples
ResampleBuf rb;
sampleCount maxBlockSize = leftTrack->GetMaxBlockSize();
rb.blockSize = maxBlockSize;
rb.buf = (audio*)calloc(rb.blockSize,sizeof(audio));
rb.leftTrack = leftTrack;
rb.rightTrack = rightTrack?rightTrack:leftTrack;
rb.leftBuffer = (float*)calloc(maxBlockSize,sizeof(float));
rb.rightBuffer = (float*)calloc(maxBlockSize,sizeof(float));
// Samples in selection
sampleCount samplesIn = end-start;
// Samples for SBSMS to process after resampling
sampleCount samplesToProcess = (sampleCount) ((float)samplesIn*(srProcess/srTrack));
SlideType outSlideType;
SBSMSResampleCB outResampleCB;
sampleCount processPresamples = 0;
sampleCount trackPresamples = 0;
if(bLinkRatePitch) {
rb.bPitch = true;
outSlideType = rateSlideType;
outResampleCB = resampleCB;
rb.offset = start;
rb.end = end;
rb.iface = new SBSMSInterfaceSliding(&rateSlide,&pitchSlide,
bPitchReferenceInput,
samplesToProcess,0,
NULL);
} else {
rb.bPitch = false;
outSlideType = (srProcess==srTrack?SlideIdentity:SlideConstant);
outResampleCB = postResampleCB;
rb.ratio = srProcess/srTrack;
rb.quality = new SBSMSQuality(&SBSMSQualityStandard);
rb.resampler = new Resampler(resampleCB, &rb, srProcess==srTrack?SlideIdentity:SlideConstant);
rb.sbsms = new SBSMS(rightTrack?2:1,rb.quality,true);
rb.SBSMSBlockSize = rb.sbsms->getInputFrameSize();
rb.SBSMSBuf = (audio*)calloc(rb.SBSMSBlockSize,sizeof(audio));
processPresamples = wxMin(rb.quality->getMaxPresamples(),
(long)((float)(start-trackStart)*(srProcess/srTrack)));
trackPresamples = wxMin(start-trackStart,
(long)((float)(processPresamples)*(srTrack/srProcess)));
rb.offset = start - trackPresamples;
rb.end = trackEnd;
rb.iface = new SBSMSEffectInterface(rb.resampler,
&rateSlide,&pitchSlide,
bPitchReferenceInput,
samplesToProcess,processPresamples,
rb.quality);
}
Resampler resampler(outResampleCB,&rb,outSlideType);
audio outBuf[SBSMSOutBlockSize];
float outBufLeft[2*SBSMSOutBlockSize];
float outBufRight[2*SBSMSOutBlockSize];
// Samples in output after SBSMS
sampleCount samplesToOutput = rb.iface->getSamplesToOutput();
// Samples in output after resampling back
sampleCount samplesOut = (sampleCount) ((float)samplesToOutput * (srTrack/srProcess));
// Duration in track time
double duration = (mCurT1-mCurT0) * mTotalStretch;
if(duration > maxDuration)
maxDuration = duration;
TimeWarper *warper = createTimeWarper(mCurT0,mCurT1,maxDuration,rateStart,rateEnd,rateSlideType);
SetTimeWarper(warper);
rb.outputLeftTrack = mFactory->NewWaveTrack(leftTrack->GetSampleFormat(),
leftTrack->GetRate());
if(rightTrack)
rb.outputRightTrack = mFactory->NewWaveTrack(rightTrack->GetSampleFormat(),
rightTrack->GetRate());
long pos = 0;
long outputCount = -1;
// process
while(pos<samplesOut && outputCount) {
long frames;
if(pos+SBSMSOutBlockSize>samplesOut) {
frames = samplesOut - pos;
} else {
frames = SBSMSOutBlockSize;
}
outputCount = resampler.read(outBuf,frames);
for(int i = 0; i < outputCount; i++) {
outBufLeft[i] = outBuf[i][0];
if(rightTrack)
outBufRight[i] = outBuf[i][1];
}
pos += outputCount;
rb.outputLeftTrack->Append((samplePtr)outBufLeft, floatSample, outputCount);
if(rightTrack)
rb.outputRightTrack->Append((samplePtr)outBufRight, floatSample, outputCount);
double frac = (double)pos/(double)samplesOut;
int nWhichTrack = mCurTrackNum;
if(rightTrack) {
nWhichTrack = 2*(mCurTrackNum/2);
if (frac < 0.5)
frac *= 2.0; // Show twice as far for each track, because we're doing 2 at once.
else {
nWhichTrack++;
frac -= 0.5;
frac *= 2.0; // Show twice as far for each track, because we're doing 2 at once.
}
}
if (TrackProgress(nWhichTrack, frac))
return false;
}
rb.outputLeftTrack->Flush();
if(rightTrack)
rb.outputRightTrack->Flush();
bool bResult =
leftTrack->ClearAndPaste(mCurT0, mCurT1, rb.outputLeftTrack,
true, false, GetTimeWarper());
wxASSERT(bResult); // TO DO: Actually handle this.
wxUnusedVar(bResult);
if(rightTrack)
{
bResult =
rightTrack->ClearAndPaste(mCurT0, mCurT1, rb.outputRightTrack,
true, false, GetTimeWarper());
wxASSERT(bResult); // TO DO: Actually handle this.
}
}
mCurTrackNum++;
}
else if (mustSync && t->IsSyncLockSelected())
{
t->SyncLockAdjust(mCurT1, mCurT0 + (mCurT1 - mCurT0) * mTotalStretch);
}
//Iterate to the next track
t = iter.Next();
}
if (bGoodResult)
ReplaceProcessedTracks(bGoodResult);
// Update selection
mT0 = mCurT0;
mT1 = mCurT0 + maxDuration;
return bGoodResult;
}
bool VSTEffect::Process()
{
CopyInputTracks();
bool bGoodResult = true;
mInBuffer = NULL;
mOutBuffer = NULL;
TrackListIterator iter(mOutputTracks);
int count = 0;
bool clear = false;
WaveTrack *left = (WaveTrack *) iter.First();
while (left) {
WaveTrack *right;
sampleCount len;
sampleCount lstart;
sampleCount rstart;
GetSamples(left, &lstart, &len);
mChannels = 1;
right = NULL;
rstart = 0;
if (left->GetLinked() && mInputs > 1) {
right = (WaveTrack *) iter.Next();
GetSamples(right, &rstart, &len);
clear = false;
mChannels = 2;
}
if (mBlockSize == 0) {
mBlockSize = left->GetMaxBlockSize() * 2;
// Some VST effects (Antress Modern is an example), do not like
// overly large block sizes. Unfortunately, I have not found a
// way to determine if the effect has a maximum it will support,
// so just limit to small value for now. This will increase
// processing time and, it's a shame, because most plugins seem
// to be able to handle much larger sizes.
if (mBlockSize > 8192) { // The Antress limit
mBlockSize = 8192;
}
mInBuffer = new float *[mInputs];
for (int i = 0; i < mInputs; i++) {
mInBuffer[i] = new float[mBlockSize];
}
mOutBuffer = new float *[mOutputs];
for (int i = 0; i < mOutputs; i++) {
mOutBuffer[i] = new float[mBlockSize];
}
// Turn the power off
callDispatcher(effMainsChanged, 0, 0, NULL, 0.0);
// Set processing parameters
callDispatcher(effSetSampleRate, 0, 0, NULL, left->GetRate());
callDispatcher(effSetBlockSize, 0, mBlockSize, NULL, 0.0);
}
// Clear unused input buffers
if (!right && !clear) {
for (int i = 1; i < mInputs; i++) {
for (int j = 0; j < mBlockSize; j++) {
mInBuffer[i][j] = 0.0;
}
}
clear = true;
}
bGoodResult = ProcessStereo(count, left, right, lstart, rstart, len);
if (!bGoodResult) {
break;
}
left = (WaveTrack *) iter.Next();
count++;
}
if (mOutBuffer) {
for (int i = 0; i < mOutputs; i++) {
delete mOutBuffer[i];
}
delete [] mOutBuffer;
mOutBuffer = NULL;
}
if (mInBuffer) {
for (int i = 0; i < mInputs; i++) {
delete mInBuffer[i];
}
delete [] mInBuffer;
mInBuffer = NULL;
}
ReplaceProcessedTracks(bGoodResult);
return bGoodResult;
}
bool EffectSoundTouch::Process()
{
// Assumes that mSoundTouch has already been initialized
// by the subclass for subclass-specific parameters. The
// time warper should also be set.
// Check if this effect will alter the selection length; if so, we need
// to operate on sync-lock selected tracks.
bool mustSync = true;
if (mT1 == GetTimeWarper()->Warp(mT1)) {
mustSync = false;
}
//Iterate over each track
// Needs Track::All for sync-lock grouping.
this->CopyInputTracks(Track::All);
bool bGoodResult = true;
TrackListIterator iter(mOutputTracks);
Track* t;
mCurTrackNum = 0;
m_maxNewLength = 0.0;
t = iter.First();
while (t != NULL) {
if (t->GetKind() == Track::Label &&
(t->GetSelected() || (mustSync && t->IsSyncLockSelected())) )
{
if (!ProcessLabelTrack(t))
{
bGoodResult = false;
break;
}
}
#ifdef USE_MIDI
else if (t->GetKind() == Track::Note &&
(t->GetSelected() || (mustSync && t->IsSyncLockSelected())))
{
if (!ProcessNoteTrack(t))
{
bGoodResult = false;
break;
}
}
#endif
else if (t->GetKind() == Track::Wave && t->GetSelected())
{
WaveTrack* leftTrack = (WaveTrack*)t;
//Get start and end times from track
mCurT0 = leftTrack->GetStartTime();
mCurT1 = leftTrack->GetEndTime();
//Set the current bounds to whichever left marker is
//greater and whichever right marker is less
mCurT0 = wxMax(mT0, mCurT0);
mCurT1 = wxMin(mT1, mCurT1);
// Process only if the right marker is to the right of the left marker
if (mCurT1 > mCurT0) {
sampleCount start, end;
if (leftTrack->GetLinked()) {
double t;
WaveTrack* rightTrack = (WaveTrack*)(iter.Next());
//Adjust bounds by the right tracks markers
t = rightTrack->GetStartTime();
t = wxMax(mT0, t);
mCurT0 = wxMin(mCurT0, t);
t = rightTrack->GetEndTime();
t = wxMin(mT1, t);
mCurT1 = wxMax(mCurT1, t);
//Transform the marker timepoints to samples
start = leftTrack->TimeToLongSamples(mCurT0);
end = leftTrack->TimeToLongSamples(mCurT1);
//Inform soundtouch there's 2 channels
mSoundTouch->setChannels(2);
//ProcessStereo() (implemented below) processes a stereo track
if (!ProcessStereo(leftTrack, rightTrack, start, end))
{
bGoodResult = false;
break;
}
mCurTrackNum++; // Increment for rightTrack, too.
} else {
//Transform the marker timepoints to samples
start = leftTrack->TimeToLongSamples(mCurT0);
end = leftTrack->TimeToLongSamples(mCurT1);
//Inform soundtouch there's a single channel
mSoundTouch->setChannels(1);
//ProcessOne() (implemented below) processes a single track
if (!ProcessOne(leftTrack, start, end))
{
bGoodResult = false;
break;
}
}
}
mCurTrackNum++;
}
else if (mustSync && t->IsSyncLockSelected()) {
t->SyncLockAdjust(mT1, GetTimeWarper()->Warp(mT1));
}
//Iterate to the next track
t = iter.Next();
}
if (bGoodResult)
ReplaceProcessedTracks(bGoodResult);
delete mSoundTouch;
mSoundTouch = NULL;
// mT0 = mCurT0;
// mT1 = mCurT0 + m_maxNewLength; // Update selection.
return bGoodResult;
}
bool EffectRepeat::Process()
{
// Set up mOutputTracks.
// This effect needs Track::All for sync-lock grouping.
CopyInputTracks(Track::All);
int nTrack = 0;
bool bGoodResult = true;
double maxDestLen = 0.0; // used to change selection to generated bit
TrackListIterator iter(mOutputTracks);
for (Track *t = iter.First(); t && bGoodResult; t = iter.Next())
{
if (t->GetKind() == Track::Label)
{
if (t->GetSelected() || t->IsSyncLockSelected())
{
LabelTrack* track = (LabelTrack*)t;
if (!track->Repeat(mT0, mT1, repeatCount))
{
bGoodResult = false;
break;
}
}
}
else if (t->GetKind() == Track::Wave && t->GetSelected())
{
WaveTrack* track = (WaveTrack*)t;
sampleCount start = track->TimeToLongSamples(mT0);
sampleCount end = track->TimeToLongSamples(mT1);
sampleCount len = (sampleCount)(end - start);
double tLen = track->LongSamplesToTime(len);
double tc = mT0 + tLen;
if (len <= 0)
{
continue;
}
auto dest = track->Copy(mT0, mT1);
for(int j=0; j<repeatCount; j++)
{
if (!track->Paste(tc, dest.get()) ||
TrackProgress(nTrack, j / repeatCount)) // TrackProgress returns true on Cancel.
{
bGoodResult = false;
break;
}
tc += tLen;
}
if (tc > maxDestLen)
maxDestLen = tc;
nTrack++;
}
else if (t->IsSyncLockSelected())
{
t->SyncLockAdjust(mT1, mT1 + (mT1 - mT0) * repeatCount);
}
}
if (bGoodResult)
{
// Select the NEW bits + original bit
mT1 = maxDestLen;
}
ReplaceProcessedTracks(bGoodResult);
return bGoodResult;
}
bool EffectTruncSilence::Process()
{
// Typical fraction of total time taken by detection (better to guess low)
const double detectFrac = .4;
// Copy tracks
this->CopyInputTracks(Track::All);
// Lower bound on the amount of silence to find at a time -- this avoids
// detecting silence repeatedly in low-frequency sounds.
const double minTruncMs = 0.001;
double truncDbSilenceThreshold = Enums::Db2Signal[mTruncDbChoiceIndex];
// Master list of silent regions; it is responsible for deleting them.
// This list should always be kept in order.
RegionList silences;
silences.DeleteContents(true);
// Start with the whole selection silent
Region *sel = new Region;
sel->start = mT0;
sel->end = mT1;
silences.push_back(sel);
// Remove non-silent regions in each track
SelectedTrackListOfKindIterator iter(Track::Wave, mTracks);
int whichTrack = 0;
for (Track *t = iter.First(); t; t = iter.Next())
{
WaveTrack *wt = (WaveTrack *)t;
// Smallest silent region to detect in frames
sampleCount minSilenceFrames =
sampleCount(wxMax( mInitialAllowedSilence, minTruncMs) *
wt->GetRate());
//
// Scan the track for silences
//
RegionList trackSilences;
trackSilences.DeleteContents(true);
sampleCount blockLen = wt->GetMaxBlockSize();
sampleCount start = wt->TimeToLongSamples(mT0);
sampleCount end = wt->TimeToLongSamples(mT1);
// Allocate buffer
float *buffer = new float[blockLen];
sampleCount index = start;
sampleCount silentFrames = 0;
bool cancelled = false;
// Keep position in overall silences list for optimization
RegionList::iterator rit(silences.begin());
while (index < end) {
// Show progress dialog, test for cancellation
cancelled = TotalProgress(
detectFrac * (whichTrack + index / (double)end) /
(double)GetNumWaveTracks());
if (cancelled)
break;
//
// Optimization: if not in a silent region skip ahead to the next one
//
double curTime = wt->LongSamplesToTime(index);
for ( ; rit != silences.end(); ++rit)
{
// Find the first silent region ending after current time
if ((*rit)->end >= curTime)
break;
}
if (rit == silences.end()) {
// No more regions -- no need to process the rest of the track
break;
}
else if ((*rit)->start > curTime) {
// End current silent region, skip ahead
if (silentFrames >= minSilenceFrames) {
Region *r = new Region;
r->start = wt->LongSamplesToTime(index - silentFrames);
r->end = wt->LongSamplesToTime(index);
trackSilences.push_back(r);
}
silentFrames = 0;
index = wt->TimeToLongSamples((*rit)->start);
}
//
// End of optimization
//
// Limit size of current block if we've reached the end
sampleCount count = blockLen;
if ((index + count) > end) {
count = end - index;
}
// Fill buffer
wt->Get((samplePtr)(buffer), floatSample, index, count);
// Look for silences in current block
for (sampleCount i = 0; i < count; ++i) {
if (fabs(buffer[i]) < truncDbSilenceThreshold) {
++silentFrames;
}
else {
if (silentFrames >= minSilenceFrames)
{
// Record the silent region
Region *r = new Region;
r->start = wt->LongSamplesToTime(index + i - silentFrames);
r->end = wt->LongSamplesToTime(index + i);
trackSilences.push_back(r);
}
silentFrames = 0;
}
}
// Next block
index += count;
}
delete [] buffer;
// Buffer has been freed, so we're OK to return if cancelled
if (cancelled)
{
ReplaceProcessedTracks(false);
return false;
}
if (silentFrames >= minSilenceFrames)
{
// Track ended in silence -- record region
Region *r = new Region;
r->start = wt->LongSamplesToTime(index - silentFrames);
r->end = wt->LongSamplesToTime(index);
trackSilences.push_back(r);
}
// Intersect with the overall silent region list
Intersect(silences, trackSilences);
whichTrack++;
}
//
// Now remove the silent regions from all selected / sync-lock selected tracks.
//
// Loop over detected regions in reverse (so cuts don't change time values
// down the line)
int whichReg = 0;
RegionList::reverse_iterator rit;
double totalCutLen = 0.0; // For cutting selection at the end
for (rit = silences.rbegin(); rit != silences.rend(); ++rit) {
Region *r = *rit;
// Progress dialog and cancellation. Do additional cleanup before return.
if (TotalProgress(detectFrac + (1 - detectFrac) * whichReg / (double)silences.size()))
{
ReplaceProcessedTracks(false);
return false;
}
// Intersection may create regions smaller than allowed; ignore them.
// Allow one nanosecond extra for consistent results with exact milliseconds of allowed silence.
if ((r->end - r->start) < (mInitialAllowedSilence - 0.000000001))
continue;
// Find new silence length as requested
double inLength = r->end - r->start;
double outLength;
switch (mProcessIndex) {
case 0:
outLength = wxMin(mTruncLongestAllowedSilence, inLength);
break;
case 1:
outLength = mInitialAllowedSilence +
(inLength - mInitialAllowedSilence) * mSilenceCompressPercent / 100.0;
break;
default: // Not currently used.
outLength = wxMin(mInitialAllowedSilence +
(inLength - mInitialAllowedSilence) * mSilenceCompressPercent / 100.0,
mTruncLongestAllowedSilence);
}
double cutLen = inLength - outLength;
totalCutLen += cutLen;
TrackListIterator iterOut(mOutputTracks);
for (Track *t = iterOut.First(); t; t = iterOut.Next())
{
// Don't waste time past the end of a track
if (t->GetEndTime() < r->start)
continue;
if (t->GetKind() == Track::Wave && (
t->GetSelected() || t->IsSyncLockSelected()))
{
// In WaveTracks, clear with a cross-fade
WaveTrack *wt = (WaveTrack *)t;
sampleCount blendFrames = mBlendFrameCount;
double cutStart = (r->start + r->end - cutLen) / 2;
double cutEnd = cutStart + cutLen;
// Round start/end times to frame boundaries
cutStart = wt->LongSamplesToTime(wt->TimeToLongSamples(cutStart));
cutEnd = wt->LongSamplesToTime(wt->TimeToLongSamples(cutEnd));
// Make sure the cross-fade does not affect non-silent frames
if (wt->LongSamplesToTime(blendFrames) > inLength) {
blendFrames = wt->TimeToLongSamples(inLength);
}
// Perform cross-fade in memory
float *buf1 = new float[blendFrames];
float *buf2 = new float[blendFrames];
sampleCount t1 = wt->TimeToLongSamples(cutStart) - blendFrames / 2;
sampleCount t2 = wt->TimeToLongSamples(cutEnd) - blendFrames / 2;
wt->Get((samplePtr)buf1, floatSample, t1, blendFrames);
wt->Get((samplePtr)buf2, floatSample, t2, blendFrames);
for (sampleCount i = 0; i < blendFrames; ++i) {
buf1[i] = ((blendFrames-i) * buf1[i] + i * buf2[i]) /
(double)blendFrames;
}
// Perform the cut
wt->Clear(cutStart, cutEnd);
// Write cross-faded data
wt->Set((samplePtr)buf1, floatSample, t1, blendFrames);
delete [] buf1;
delete [] buf2;
}
else if (t->GetSelected() || t->IsSyncLockSelected())
{
// Non-wave tracks: just do a sync-lock adjust
double cutStart = (r->start + r->end - cutLen) / 2;
double cutEnd = cutStart + cutLen;
t->SyncLockAdjust(cutEnd, cutStart);
}
}
++whichReg;
}
mT1 -= totalCutLen;
ReplaceProcessedTracks(true);
return true;
}
bool EffectSBSMS::Process()
{
if(!bInit) {
sbsms_init(4096);
bInit = TRUE;
}
bool bGoodResult = true;
//Iterate over each track
//Track::All is needed because this effect needs to introduce silence in the group tracks to keep sync
this->CopyInputTracks(Track::All); // Set up mOutputTracks.
TrackListIterator iter(mOutputTracks);
Track* t;
mCurTrackNum = 0;
double maxDuration = 0.0;
if(rateStart == rateEnd)
mTotalStretch = 1.0/rateStart;
else
mTotalStretch = 1.0/(rateEnd-rateStart)*log(rateEnd/rateStart);
// Must sync if selection length will change
bool mustSync = (mTotalStretch != 1.0);
t = iter.First();
while (t != NULL) {
if (t->GetKind() == Track::Label &&
(t->GetSelected() || (mustSync && t->IsSynchroSelected())) )
{
if (!ProcessLabelTrack(t)) {
bGoodResult = false;
break;
}
}
else if (t->GetKind() == Track::Wave && t->GetSelected() )
{
WaveTrack* leftTrack = (WaveTrack*)t;
//Get start and end times from track
mCurT0 = leftTrack->GetStartTime();
mCurT1 = leftTrack->GetEndTime();
//Set the current bounds to whichever left marker is
//greater and whichever right marker is less
mCurT0 = wxMax(mT0, mCurT0);
mCurT1 = wxMin(mT1, mCurT1);
// Process only if the right marker is to the right of the left marker
if (mCurT1 > mCurT0) {
sampleCount start;
sampleCount end;
start = leftTrack->TimeToLongSamples(mCurT0);
end = leftTrack->TimeToLongSamples(mCurT1);
WaveTrack* rightTrack = NULL;
if (leftTrack->GetLinked()) {
double t;
rightTrack = (WaveTrack*)(iter.Next());
//Adjust bounds by the right tracks markers
t = rightTrack->GetStartTime();
t = wxMax(mT0, t);
mCurT0 = wxMin(mCurT0, t);
t = rightTrack->GetEndTime();
t = wxMin(mT1, t);
mCurT1 = wxMax(mCurT1, t);
//Transform the marker timepoints to samples
start = leftTrack->TimeToLongSamples(mCurT0);
end = leftTrack->TimeToLongSamples(mCurT1);
mCurTrackNum++; // Increment for rightTrack, too.
}
sampleCount trackEnd = leftTrack->TimeToLongSamples(leftTrack->GetEndTime());
// SBSMS has a fixed sample rate - we just convert to its sample rate and then convert back
float srIn = leftTrack->GetRate();
float srSBSMS = 44100.0;
// the resampler needs a callback to supply its samples
resampleBuf rb;
sampleCount maxBlockSize = leftTrack->GetMaxBlockSize();
rb.block = maxBlockSize;
rb.buf = (audio*)calloc(rb.block,sizeof(audio));
rb.leftTrack = leftTrack;
rb.rightTrack = rightTrack?rightTrack:leftTrack;
rb.leftBuffer = (float*)calloc(maxBlockSize,sizeof(float));
rb.rightBuffer = (float*)calloc(maxBlockSize,sizeof(float));
rb.offset = start;
rb.end = trackEnd;
rb.ratio = srSBSMS/srIn;
rb.resampler = new Resampler(resampleCB, &rb);
// Samples in selection
sampleCount samplesIn = end-start;
// Samples for SBSMS to process after resampling
sampleCount samplesToProcess = (sampleCount) ((real)samplesIn*(srSBSMS/srIn));
// Samples in output after resampling back
sampleCount samplesToGenerate = (sampleCount) ((real)samplesToProcess * mTotalStretch);
sampleCount samplesOut = (sampleCount) ((real)samplesIn * mTotalStretch);
double duration = (mCurT1-mCurT0) * mTotalStretch;
if(duration > maxDuration)
maxDuration = duration;
TimeWarper *warper = NULL;
if (rateStart == rateEnd)
{
warper = new LinearTimeWarper(mCurT0, mCurT0,
mCurT1, mCurT0+maxDuration);
} else
{
warper = new LogarithmicTimeWarper(mCurT0, mCurT1,
rateStart, rateEnd);
}
SetTimeWarper(warper);
sbsmsInfo si;
si.rs = rb.resampler;
si.samplesToProcess = samplesToProcess;
si.samplesToGenerate = samplesToGenerate;
si.stretch0 = rateStart;
si.stretch1 = rateEnd;
si.ratio0 = pitchStart;
si.ratio1 = pitchEnd;
rb.sbsmser = sbsms_create(&samplesCB,&stretchCB,&ratioCB,rightTrack?2:1,quality,bPreAnalyze,true);
rb.pitch = pitch_create(rb.sbsmser,&si,srIn/srSBSMS);
rb.outputLeftTrack = mFactory->NewWaveTrack(leftTrack->GetSampleFormat(),
leftTrack->GetRate());
if(rightTrack)
rb.outputRightTrack = mFactory->NewWaveTrack(rightTrack->GetSampleFormat(),
rightTrack->GetRate());
sampleCount blockSize = SBSMS_FRAME_SIZE[quality];
rb.outBuf = (audio*)calloc(blockSize,sizeof(audio));
rb.outputLeftBuffer = (float*)calloc(blockSize*2,sizeof(float));
if(rightTrack)
rb.outputRightBuffer = (float*)calloc(blockSize*2,sizeof(float));
long pos = 0;
long outputCount = -1;
// pre analysis
real fracPre = 0.0f;
if(bPreAnalyze) {
fracPre = 0.05f;
resampleBuf rbPre;
rbPre.block = maxBlockSize;
rbPre.buf = (audio*)calloc(rb.block,sizeof(audio));
rbPre.leftTrack = leftTrack;
rbPre.rightTrack = rightTrack?rightTrack:leftTrack;
rbPre.leftBuffer = (float*)calloc(maxBlockSize,sizeof(float));
rbPre.rightBuffer = (float*)calloc(maxBlockSize,sizeof(float));
rbPre.offset = start;
rbPre.end = end;
rbPre.ratio = srSBSMS/srIn;
rbPre.resampler = new Resampler(resampleCB, &rbPre);
si.rs = rbPre.resampler;
long pos = 0;
long lastPos = 0;
long ret = 0;
while(lastPos<samplesToProcess) {
ret = sbsms_pre_analyze(&samplesCB,&si,rb.sbsmser);
lastPos = pos;
pos += ret;
real completion = (real)lastPos/(real)samplesToProcess;
if (TrackProgress(0,fracPre*completion))
return false;
}
sbsms_pre_analyze_complete(rb.sbsmser);
sbsms_reset(rb.sbsmser);
si.rs = rb.resampler;
}
// process
while(pos<samplesOut && outputCount) {
long frames;
if(pos+blockSize>samplesOut) {
frames = samplesOut - pos;
} else {
frames = blockSize;
}
outputCount = pitch_process(rb.outBuf, frames, rb.pitch);
for(int i = 0; i < outputCount; i++) {
rb.outputLeftBuffer[i] = rb.outBuf[i][0];
if(rightTrack)
rb.outputRightBuffer[i] = rb.outBuf[i][1];
}
pos += outputCount;
rb.outputLeftTrack->Append((samplePtr)rb.outputLeftBuffer, floatSample, outputCount);
if(rightTrack)
rb.outputRightTrack->Append((samplePtr)rb.outputRightBuffer, floatSample, outputCount);
double frac = (double)pos/(double)samplesOut;
int nWhichTrack = mCurTrackNum;
if(rightTrack) {
nWhichTrack = 2*(mCurTrackNum/2);
if (frac < 0.5)
frac *= 2.0; // Show twice as far for each track, because we're doing 2 at once.
else {
nWhichTrack++;
frac -= 0.5;
frac *= 2.0; // Show twice as far for each track, because we're doing 2 at once.
}
}
if (TrackProgress(nWhichTrack, fracPre + (1.0-fracPre)*frac))
return false;
}
rb.outputLeftTrack->Flush();
if(rightTrack)
rb.outputRightTrack->Flush();
leftTrack->ClearAndPaste(mCurT0, mCurT1, rb.outputLeftTrack,
true, false, GetTimeWarper());
if(rightTrack) {
rightTrack->ClearAndPaste(mCurT0, mCurT1, rb.outputRightTrack,
true, false, GetTimeWarper());
}
}
mCurTrackNum++;
}
else if (mustSync && t->IsSynchroSelected())
{
t->SyncAdjust(mCurT1, mCurT0 + (mCurT1 - mCurT0) * mTotalStretch);
}
//Iterate to the next track
t = iter.Next();
}
if (bGoodResult)
ReplaceProcessedTracks(bGoodResult);
// Update selection
mT0 = mCurT0;
mT1 = mCurT0 + maxDuration;
return bGoodResult;
}
bool EffectAutoDuck::Process()
{
if (GetNumWaveTracks() == 0 || !mControlTrack)
return false;
bool cancel = false;
auto start =
mControlTrack->TimeToLongSamples(mT0 + mOuterFadeDownLen);
auto end =
mControlTrack->TimeToLongSamples(mT1 - mOuterFadeUpLen);
if (end <= start)
return false;
// the minimum number of samples we have to wait until the maximum
// pause has been exceeded
double maxPause = mMaximumPause;
// We don't fade in until we have time enough to actually fade out again
if (maxPause < mOuterFadeDownLen + mOuterFadeUpLen)
maxPause = mOuterFadeDownLen + mOuterFadeUpLen;
auto minSamplesPause =
mControlTrack->TimeToLongSamples(maxPause);
double threshold = DB_TO_LINEAR(mThresholdDb);
// adjust the threshold so we can compare it to the rmsSum value
threshold = threshold * threshold * kRMSWindowSize;
int rmsPos = 0;
float rmsSum = 0;
// to make the progress bar appear more natural, we first look for all
// duck regions and apply them all at once afterwards
std::vector<AutoDuckRegion> regions;
bool inDuckRegion = false;
{
Floats rmsWindow{ kRMSWindowSize, true };
Floats buf{ kBufSize };
// initialize the following two variables to prevent compiler warning
double duckRegionStart = 0;
sampleCount curSamplesPause = 0;
auto pos = start;
while (pos < end)
{
const auto len = limitSampleBufferSize( kBufSize, end - pos );
mControlTrack->Get((samplePtr)buf.get(), floatSample, pos, len);
for (auto i = pos; i < pos + len; i++)
{
rmsSum -= rmsWindow[rmsPos];
// i - pos is bounded by len:
auto index = ( i - pos ).as_size_t();
rmsWindow[rmsPos] = buf[ index ] * buf[ index ];
rmsSum += rmsWindow[rmsPos];
rmsPos = (rmsPos + 1) % kRMSWindowSize;
bool thresholdExceeded = rmsSum > threshold;
if (thresholdExceeded)
{
// everytime the threshold is exceeded, reset our count for
// the number of pause samples
curSamplesPause = 0;
if (!inDuckRegion)
{
// the threshold has been exceeded for the first time, so
// let the duck region begin here
inDuckRegion = true;
duckRegionStart = mControlTrack->LongSamplesToTime(i);
}
}
if (!thresholdExceeded && inDuckRegion)
{
// the threshold has not been exceeded and we are in a duck
// region, but only fade in if the maximum pause has been
// exceeded
curSamplesPause += 1;
if (curSamplesPause >= minSamplesPause)
{
// do the actual duck fade and reset all values
double duckRegionEnd =
mControlTrack->LongSamplesToTime(i - curSamplesPause);
regions.push_back(AutoDuckRegion(
duckRegionStart - mOuterFadeDownLen,
duckRegionEnd + mOuterFadeUpLen));
inDuckRegion = false;
}
}
}
pos += len;
if (TotalProgress(
(pos - start).as_double() /
(end - start).as_double() /
(GetNumWaveTracks() + 1)
))
{
cancel = true;
break;
}
}
// apply last duck fade, if any
if (inDuckRegion)
{
double duckRegionEnd =
mControlTrack->LongSamplesToTime(end - curSamplesPause);
regions.push_back(AutoDuckRegion(
duckRegionStart - mOuterFadeDownLen,
duckRegionEnd + mOuterFadeUpLen));
}
}
if (!cancel)
{
CopyInputTracks(); // Set up mOutputTracks.
SelectedTrackListOfKindIterator iter(Track::Wave, mOutputTracks.get());
Track *iterTrack = iter.First();
int trackNum = 0;
while (iterTrack)
{
WaveTrack* t = (WaveTrack*)iterTrack;
for (size_t i = 0; i < regions.size(); i++)
{
const AutoDuckRegion& region = regions[i];
if (ApplyDuckFade(trackNum, t, region.t0, region.t1))
{
cancel = true;
break;
}
}
if (cancel)
break;
iterTrack = iter.Next();
trackNum++;
}
}
ReplaceProcessedTracks(!cancel);
return !cancel;
}
