bool EffectSoundTouch::ProcessStereo(WaveTrack* leftTrack, WaveTrack* rightTrack,
sampleCount start, sampleCount end)
{
mSoundTouch->setSampleRate((unsigned int)(leftTrack->GetRate()+0.5));
WaveTrack* outputLeftTrack = mFactory->NewWaveTrack(leftTrack->GetSampleFormat(),
leftTrack->GetRate());
WaveTrack* outputRightTrack = mFactory->NewWaveTrack(rightTrack->GetSampleFormat(),
rightTrack->GetRate());
//Get the length of the buffer (as double). len is
//used simple to calculate a progress meter, so it is easier
//to make it a double now than it is to do it later
double len = (double)(end - start);
//Initiate a processing buffer. This buffer will (most likely)
//be shorter than the length of the track being processed.
// Make soundTouchBuffer twice as big as MaxBlockSize for each channel,
// because Soundtouch wants them interleaved, i.e., each
// Soundtouch sample is left-right pair.
sampleCount maxBlockSize = leftTrack->GetMaxBlockSize();
float* leftBuffer = new float[maxBlockSize];
float* rightBuffer = new float[maxBlockSize];
float* soundTouchBuffer = new float[maxBlockSize * 2];
// Go through the track one stereo buffer at a time.
// sourceSampleCount counts the sample at which the current buffer starts,
// per channel.
sampleCount sourceSampleCount = start;
while (sourceSampleCount < end) {
//Get a block of samples (smaller than the size of the buffer)
sampleCount blockSize = leftTrack->GetBestBlockSize(sourceSampleCount);
//Adjust the block size if it is the final block in the track
if (sourceSampleCount + blockSize > end)
blockSize = end - sourceSampleCount;
// Get the samples from the tracks and put them in the buffers.
leftTrack->Get((samplePtr)(leftBuffer), floatSample, sourceSampleCount, blockSize);
rightTrack->Get((samplePtr)(rightBuffer), floatSample, sourceSampleCount, blockSize);
// Interleave into soundTouchBuffer.
for (int index = 0; index < blockSize; index++) {
soundTouchBuffer[index*2] = leftBuffer[index];
soundTouchBuffer[(index*2)+1] = rightBuffer[index];
}
//Add samples to SoundTouch
mSoundTouch->putSamples(soundTouchBuffer, blockSize);
//Get back samples from SoundTouch
unsigned int outputCount = mSoundTouch->numSamples();
if (outputCount > 0)
this->ProcessStereoResults(outputCount, outputLeftTrack, outputRightTrack);
//Increment sourceSampleCount one blockfull of samples
sourceSampleCount += blockSize;
//Update the Progress meter
// mCurTrackNum is left track. Include right track.
int nWhichTrack = mCurTrackNum;
double frac = (sourceSampleCount - start) / len;
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;
}
// Tell SoundTouch to finish processing any remaining samples
mSoundTouch->flush();
unsigned int outputCount = mSoundTouch->numSamples();
if (outputCount > 0)
this->ProcessStereoResults(outputCount, outputLeftTrack, outputRightTrack);
// Flush the output WaveTracks (since they're buffered, too)
outputLeftTrack->Flush();
outputRightTrack->Flush();
// Clean up the buffers.
delete [] leftBuffer;
delete [] rightBuffer;
delete [] soundTouchBuffer;
// Take the output tracks and insert in place of the original
// sample data.
leftTrack->ClearAndPaste(mCurT0, mCurT1, outputLeftTrack, true, false, GetTimeWarper());
rightTrack->ClearAndPaste(mCurT0, mCurT1, outputRightTrack, true, false, GetTimeWarper());
// Track the longest result length
double newLength = outputLeftTrack->GetEndTime();
m_maxNewLength = wxMax(m_maxNewLength, newLength);
newLength = outputRightTrack->GetEndTime();
m_maxNewLength = wxMax(m_maxNewLength, newLength);
// Delete the outputTracks now that their data are inserted in place.
delete outputLeftTrack;
delete outputRightTrack;
//Return true because the effect processing succeeded.
return true;
}
//ProcessOne() takes a track, transforms it to bunch of buffer-blocks,
//and executes ProcessSoundTouch on these blocks
bool EffectSoundTouch::ProcessOne(WaveTrack *track,
sampleCount start, sampleCount end)
{
WaveTrack *outputTrack;
sampleCount s;
mSoundTouch->setSampleRate((unsigned int)(track->GetRate()+0.5));
outputTrack = mFactory->NewWaveTrack(track->GetSampleFormat(), track->GetRate());
//Get the length of the buffer (as double). len is
//used simple to calculate a progress meter, so it is easier
//to make it a double now than it is to do it later
double len = (double)(end - start);
//Initiate a processing buffer. This buffer will (most likely)
//be shorter than the length of the track being processed.
float *buffer = new float[track->GetMaxBlockSize()];
//Go through the track one buffer at a time. s counts which
//sample the current buffer starts at.
s = start;
while (s < end) {
//Get a block of samples (smaller than the size of the buffer)
sampleCount block = track->GetBestBlockSize(s);
//Adjust the block size if it is the final block in the track
if (s + block > end)
block = end - s;
//Get the samples from the track and put them in the buffer
track->Get((samplePtr) buffer, floatSample, s, block);
//Add samples to SoundTouch
mSoundTouch->putSamples(buffer, block);
//Get back samples from SoundTouch
unsigned int outputCount = mSoundTouch->numSamples();
if (outputCount > 0) {
float *buffer2 = new float[outputCount];
mSoundTouch->receiveSamples(buffer2, outputCount);
outputTrack->Append((samplePtr)buffer2, floatSample, outputCount);
delete[] buffer2;
}
//Increment s one blockfull of samples
s += block;
//Update the Progress meter
if (TrackProgress(mCurTrackNum, (s - start) / len))
return false;
}
// Tell SoundTouch to finish processing any remaining samples
mSoundTouch->flush(); // this should only be used for changeTempo - it dumps data otherwise with pRateTransposer->clear();
unsigned int outputCount = mSoundTouch->numSamples();
if (outputCount > 0) {
float *buffer2 = new float[outputCount];
mSoundTouch->receiveSamples(buffer2, outputCount);
outputTrack->Append((samplePtr)buffer2, floatSample, outputCount);
delete[] buffer2;
}
// Flush the output WaveTrack (since it's buffered, too)
outputTrack->Flush();
// Clean up the buffer
delete[]buffer;
// Take the output track and insert it in place of the original
// sample data
track->ClearAndPaste(mCurT0, mCurT1, outputTrack, true, false, GetTimeWarper());
double newLength = outputTrack->GetEndTime();
m_maxNewLength = wxMax(m_maxNewLength, newLength);
// Delete the outputTrack now that its data is inserted in place
delete outputTrack;
//Return true because the effect processing succeeded.
return true;
}
// ProcessOne() takes a track, transforms it to bunch of buffer-blocks,
// and calls libsamplerate code on these blocks.
bool EffectChangeSpeed::ProcessOne(WaveTrack * track,
longSampleCount start, longSampleCount end)
{
if (track == NULL)
return false;
// initialization, per examples of Mixer::Mixer and
// EffectSoundTouch::ProcessOne
WaveTrack * outputTrack = mFactory->NewWaveTrack(track->GetSampleFormat(),
track->GetRate());
//Get the length of the selection (as double). len is
//used simple to calculate a progress meter, so it is easier
//to make it a double now than it is to do it later
double len = (double)(end - start);
// Initiate processing buffers, most likely shorter than
// the length of the selection being processed.
sampleCount inBufferSize = track->GetMaxBlockSize();
float * inBuffer = new float[inBufferSize];
double factor = 100.0 / (100.0 + m_PercentChange);
sampleCount outBufferSize =
(sampleCount)((factor * inBufferSize) + 10);
float * outBuffer = new float[outBufferSize];
// Set up the resampling stuff for this track.
Resample resample(true, factor, factor);
//Go through the track one buffer at a time. samplePos counts which
//sample the current buffer starts at.
bool bLoopSuccess = true;
sampleCount blockSize;
longSampleCount samplePos = start;
while (samplePos < end) {
//Get a blockSize of samples (smaller than the size of the buffer)
blockSize = track->GetBestBlockSize(samplePos);
//Adjust the block size if it is the final block in the track
if (samplePos + blockSize > end)
blockSize = end - samplePos;
//Get the samples from the track and put them in the buffer
track->Get((samplePtr) inBuffer, floatSample, samplePos, blockSize);
int inUsed;
int outgen = resample.Process(factor,
inBuffer,
blockSize,
((samplePos + blockSize) >= end),
&inUsed,
outBuffer,
outBufferSize);
if (outgen < 0) {
bLoopSuccess = false;
break;
}
if (outgen > 0)
outputTrack->Append((samplePtr)outBuffer, floatSample,
outgen);
// Increment samplePos
samplePos += inUsed;
// Update the Progress meter
if (TrackProgress(mCurTrackNum, (samplePos - start) / len)) {
bLoopSuccess = false;
break;
}
}
// Flush the output WaveTrack (since it's buffered, too)
outputTrack->Flush();
// Clean up the buffers
delete [] inBuffer;
delete [] outBuffer;
// Take the output track and insert it in place of the original
// sample data
if (bLoopSuccess) {
track->Clear(mCurT0, mCurT1);
track->Paste(mCurT0, outputTrack);
}
double newLength = outputTrack->GetEndTime();
if (newLength > m_maxNewLength)
m_maxNewLength = newLength;
// Delete the outputTrack now that its data is inserted in place
delete outputTrack;
return bLoopSuccess;
}
bool EffectNormalize::Process()
{
bool wasLinked = false; // set when a track has a linked (stereo) track
if (mGain == false &&
mDC == false)
return true;
//Iterate over each track
this->CopyInputTracks(); // Set up mOutputTracks.
bool bGoodResult = true;
SelectedTrackListOfKindIterator iter(Track::Wave, mOutputTracks);
WaveTrack *track = (WaveTrack *) iter.First();
mCurTrackNum = 0;
while (track) {
//Get start and end times from track
double trackStart = track->GetStartTime();
double trackEnd = track->GetEndTime();
//Set the current bounds to whichever left marker is
//greater and whichever right marker is less:
mCurT0 = mT0 < trackStart? trackStart: mT0;
mCurT1 = mT1 > trackEnd? trackEnd: mT1;
// 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 = track->TimeToLongSamples(mCurT0);
sampleCount end = track->TimeToLongSamples(mCurT1);
//Get the track rate and samples
mCurRate = track->GetRate();
mCurChannel = track->GetChannel();
if(mStereoInd) // do stereo tracks independently (the easy way)
track->GetMinMax(&mMin, &mMax, mCurT0, mCurT1);
else
{
if(!wasLinked) // new mono track or first of a stereo pair
{
track->GetMinMax(&mMin, &mMax, mCurT0, mCurT1);
if(track->GetLinked())
{
wasLinked = true; // so we use these values for the next (linked) track
track = (WaveTrack *) iter.Next(); // get the next one for the max/min
float min, max;
track->GetMinMax(&min, &max, mCurT0, mCurT1);
mMin = min < mMin ? min : mMin;
mMax = max > mMax ? max : mMax;
track = (WaveTrack *) iter.Prev(); // back to the one we are on
}
}
else
wasLinked = false; // second of the stereo pair, next one is mono or first
}
//ProcessOne() (implemented below) processes a single track
if (!ProcessOne(track, start, end))
{
bGoodResult = false;
break;
}
}
//Iterate to the next track
track = (WaveTrack *) iter.Next();
mCurTrackNum++;
}
this->ReplaceProcessedTracks(bGoodResult);
return bGoodResult;
}
void ControlToolBar::OnRecord(wxCommandEvent &evt)
{
if (gAudioIO->IsBusy()) {
mRecord->PopUp();
return;
}
AudacityProject *p = GetActiveProject();
if (p && p->GetCleanSpeechMode()) {
size_t numProjects = gAudacityProjects.Count();
bool tracks = (p && !p->GetTracks()->IsEmpty());
if (tracks || (numProjects > 1)) {
wxMessageBox(_("Recording in CleanSpeech mode is not possible when a track, or more than one project, is already open."),
_("Recording not permitted"),
wxOK | wxICON_INFORMATION,
this);
mRecord->PopUp();
mRecord->Disable();
return;
}
}
if( evt.GetInt() == 1 ) // used when called by keyboard shortcut. Default (0) ignored.
mRecord->SetShift(true);
if( evt.GetInt() == 2 )
mRecord->SetShift(false);
SetRecord(true);
if (p) {
TrackList *t = p->GetTracks();
TrackListIterator it(t);
if(it.First() == NULL)
mRecord->SetShift(false);
double t0 = p->GetSel0();
double t1 = p->GetSel1();
if (t1 == t0)
t1 = 1000000000.0; // record for a long, long time (tens of years)
/* TODO: set up stereo tracks if that is how the user has set up
* their preferences, and choose sample format based on prefs */
WaveTrackArray newRecordingTracks, playbackTracks;
/* REQUIRES PORTMIDI */
// NoteTrackArray midiTracks;
bool duplex;
gPrefs->Read(wxT("/AudioIO/Duplex"), &duplex, true);
if(duplex){
playbackTracks = t->GetWaveTrackArray(false);
/* REQUIRES PORTMIDI */
// midiTracks = t->GetNoteTrackArray(false);
}
else {
playbackTracks = WaveTrackArray();
/* REQUIRES PORTMIDI */
// midiTracks = NoteTrackArray();
}
// If SHIFT key was down, the user wants append to tracks
int recordingChannels = 0;
bool shifted = mRecord->WasShiftDown();
if (shifted) {
TrackListIterator it(t);
WaveTrack *wt;
bool sel = false;
double allt0 = t0;
// Find the maximum end time of selected and all wave tracks
for (Track *tt = it.First(); tt; tt = it.Next()) {
if (tt->GetKind() == Track::Wave) {
wt = (WaveTrack *)tt;
if (wt->GetEndTime() > allt0) {
allt0 = wt->GetEndTime();
}
if (tt->GetSelected()) {
sel = true;
if (duplex)
playbackTracks.Remove(wt);
if (wt->GetEndTime() > t0) {
t0 = wt->GetEndTime();
}
}
}
}
// Use end time of all wave tracks if none selected
if (!sel) {
t0 = allt0;
}
// Pad selected/all wave tracks to make them all the same length
for (Track *tt = it.First(); tt; tt = it.Next()) {
if (tt->GetKind() == Track::Wave && (tt->GetSelected() || !sel)) {
wt = (WaveTrack *)tt;
t1 = wt->GetEndTime();
if (t1 < t0) {
WaveTrack *newTrack = p->GetTrackFactory()->NewWaveTrack();
newTrack->InsertSilence(0.0, t0 - t1);
newTrack->Flush();
wt->Clear(t1, t0);
wt->Paste(t1, newTrack);
delete newTrack;
}
newRecordingTracks.Add(wt);
}
}
t1 = 1000000000.0; // record for a long, long time (tens of years)
}
else {
recordingChannels = gPrefs->Read(wxT("/AudioIO/RecordChannels"), 2);
for (int c = 0; c < recordingChannels; c++) {
WaveTrack *newTrack = p->GetTrackFactory()->NewWaveTrack();
int initialheight = newTrack->GetHeight();
newTrack->SetOffset(t0);
if (recordingChannels <= 2) {
newTrack->SetHeight(initialheight/recordingChannels);
}
else {
newTrack->SetMinimized(true);
}
if (recordingChannels == 2) {
if (c == 0) {
newTrack->SetChannel(Track::LeftChannel);
newTrack->SetLinked(true);
}
else {
newTrack->SetChannel(Track::RightChannel);
newTrack->SetTeamed(true);
}
}
else {
newTrack->SetChannel( Track::MonoChannel );
}
newRecordingTracks.Add(newTrack);
}
// msmeyer: StartStream calls a callback which triggers auto-save, so
// we add the tracks where recording is done into now. We remove them
// later if starting the stream fails
for (unsigned int i = 0; i < newRecordingTracks.GetCount(); i++)
t->Add(newRecordingTracks[i]);
}
int token = gAudioIO->StartStream(playbackTracks,
newRecordingTracks,
/* REQUIRES PORTMIDI */
// midiTracks,
t->GetTimeTrack(),
p->GetRate(), t0, t1, p);
bool success = (token != 0);
if (success) {
p->SetAudioIOToken(token);
mBusyProject = p;
SetVUMeters(p);
}
else {
// msmeyer: Delete recently added tracks if opening stream fails
if (!shifted) {
for (unsigned int i = 0; i < newRecordingTracks.GetCount(); i++) {
t->Remove(newRecordingTracks[i]);
delete newRecordingTracks[i];
}
}
// msmeyer: Show error message if stream could not be opened
wxMessageBox(_("Error while opening sound device. "
wxT("Please check the input device settings and the project sample rate.")),
_("Error"), wxOK | wxICON_EXCLAMATION, this);
SetPlay(false);
SetStop(false);
SetRecord(false);
}
}
}