bool EffectPaulstretch::Process()
{
CopyInputTracks();
SelectedTrackListOfKindIterator iter(Track::Wave, mOutputTracks.get());
WaveTrack *track = (WaveTrack *) iter.First();
m_t1=mT1;
int count=0;
while (track) {
double trackStart = track->GetStartTime();
double trackEnd = track->GetEndTime();
double t0 = mT0 < trackStart? trackStart: mT0;
double t1 = mT1 > trackEnd? trackEnd: mT1;
if (t1 > t0) {
if (!ProcessOne(track, t0,t1,count))
return false;
}
track = (WaveTrack *) iter.Next();
count++;
}
mT1=m_t1;
ReplaceProcessedTracks(true);
return true;
}
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::ProcessAll()
{
// Copy tracks
CopyInputTracks(Track::All);
// Master list of silent regions.
// This list should always be kept in order.
RegionList silences;
SelectedTrackListOfKindIterator iter(Track::Wave, mTracks);
if (FindSilences(silences, iter.First(), iter.Last())) {
TrackListIterator iterOut(mOutputTracks);
double totalCutLen = 0.0;
Track *const first = iterOut.First();
if (DoRemoval(silences, 0, 1, first, iterOut.Last(), totalCutLen)) {
mT1 -= totalCutLen;
return true;
}
}
return false;
}
bool EffectTruncSilence::ProcessIndependently()
{
unsigned nGroups = 0;
const bool syncLock = ::GetActiveProject()->IsSyncLocked();
// Check if it's permissible
{
SelectedTrackListOfKindIterator iter(Track::Wave, mTracks);
for (Track *track = iter.First(); track;
track = iter.Next(true) // skip linked tracks
) {
if (syncLock) {
Track *const link = track->GetLink();
SyncLockedTracksIterator syncIter(mTracks);
for (Track *track2 = syncIter.StartWith(track); track2; track2 = syncIter.Next()) {
if (track2->GetKind() == Track::Wave &&
!(track2 == track || track2 == link) &&
track2->GetSelected()) {
::wxMessageBox(_("When truncating independently, there may only be one selected audio track in each sync-lock group."));
return false;
}
}
}
++nGroups;
}
}
if (nGroups == 0)
// nothing to do
return true;
// Now do the work
// Copy tracks
CopyInputTracks(Track::All);
double newT1 = 0.0;
{
unsigned iGroup = 0;
SelectedTrackListOfKindIterator iter(Track::Wave, mOutputTracks);
for (Track *track = iter.First(); track;
++iGroup, track = iter.Next(true) // skip linked tracks
) {
Track *const link = track->GetLink();
Track *const last = link ? link : track;
RegionList silences;
if (!FindSilences(silences, track, last))
return false;
// Treat tracks in the sync lock group only
Track *groupFirst, *groupLast;
if (syncLock) {
SyncLockedTracksIterator syncIter(mOutputTracks);
groupFirst = syncIter.StartWith(track);
groupLast = syncIter.Last();
}
else {
groupFirst = track;
groupLast = last;
}
double totalCutLen = 0.0;
if (!DoRemoval(silences, iGroup, nGroups, groupFirst, groupLast, totalCutLen))
return false;
newT1 = std::max(newT1, mT1 - totalCutLen);
}
}
mT1 = newT1;
return true;
}
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 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 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
CopyInputTracks(Track::All); // Set up mOutputTracks.
bool bGoodResult = true;
TrackListIterator iter(mOutputTracks.get());
Track* t;
mCurTrackNum = 0;
mMaxNewLength = 0.0;
mFactor = 100.0 / (100.0 + m_PercentChange);
t = iter.First();
while (t != NULL)
{
if (t->GetKind() == Track::Label) {
if (t->GetSelected() || t->IsSyncLockSelected())
{
if (!ProcessLabelTrack(static_cast<LabelTrack*>(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
auto start = pOutWaveTrack->TimeToLongSamples(mCurT0);
auto 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);
// Update selection.
mT1 = mT0 + (((mT1 - mT0) * 100.0) / (100.0 + m_PercentChange));
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 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;
}
