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Iterations over channels in remaining places that won't generalize...

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... simply to the more-than-stereo case.

All these places have the comment:

// TODO: more-than-two-channels
This commit is contained in:
Paul Licameli 2018-09-30 11:20:18 -04:00
commit dbf44efc9f
13 changed files with 268 additions and 251 deletions
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39
src/AudioIO.cpp
View File

@ -1891,20 +1891,17 @@ int AudioIO::StartStream(const TransportTracks &tracks,
// group determination should mimic what is done in audacityAudioCallback()
// when calling RealtimeProcess().
int group = 0;
for (size_t i = 0, cnt = mPlaybackTracks.size(); i < cnt; i++)
for (size_t i = 0, cnt = mPlaybackTracks.size(); i < cnt;)
{
const WaveTrack *vt = mPlaybackTracks[i].get();
unsigned chanCnt = 1;
if (vt->GetLinked())
{
i++;
chanCnt++;
}
// TODO: more-than-two-channels
unsigned chanCnt = TrackList::Channels(vt).size();
i += chanCnt;
// Setup for realtime playback at the rate of the realtime
// stream, not the rate of the track.
em.RealtimeAddProcessor(group++, chanCnt, mRate);
em.RealtimeAddProcessor(group++, std::min(2u, chanCnt), mRate);
}
}
@ -4992,26 +4989,38 @@ int AudioIO::AudioCallback(const void *inputBuffer, void *outputBuffer,
bool drop = false;
bool dropQuickly = false;
bool linkFlag = false;
for (unsigned t = 0; t < numPlaybackTracks; t++)
{
WaveTrack *vt = mPlaybackTracks[t].get();
chans[chanCnt] = vt;
if ( linkFlag ) {
linkFlag = false;
// TODO: more-than-two-channels
auto nextTrack =
t + 1 < numPlaybackTracks
? mPlaybackTracks[t + 1].get()
: nullptr;
bool firstChannel = vt->IsLeader();
bool lastChannel = !nextTrack || nextTrack->IsLeader();
if ( ! firstChannel )
dropQuickly = dropQuickly && doneMicrofading( *vt );
}
else {
drop = dropTrack( *vt );
linkFlag = vt->GetLinked();
selected = vt->GetSelected();
if ( lastChannel ) {
// TODO: more-than-two-channels
#if 1
// If we have a mono track, clear the right channel
if (!linkFlag)
memset(tempBufs[1], 0, framesPerBuffer * sizeof(float));
#else
// clear any other channels
for ( size_t c = chanCnt + 1; c < numPlaybackChannels; ++c )
memset(tempBufs[c], 0, framesPerBuffer * sizeof(float));
#endif
}
dropQuickly = drop && doneMicrofading( *vt );
}
@ -5055,7 +5064,7 @@ int AudioIO::AudioCallback(const void *inputBuffer, void *outputBuffer,
maxLen = std::max(maxLen, len);
if (linkFlag)
if ( ! lastChannel )
{
continue;
}

35
src/Menus.cpp
View File

@ -2318,14 +2318,13 @@ CommandFlag MenuCommandHandler::GetUpdateFlags
flags |= PlayableTracksExistFlag;
if (t->GetSelected()) {
flags |= TracksSelectedFlag;
if (t->GetLinked()) {
// TODO: more-than-two-channels
if (TrackList::Channels(t).size() > 1) {
flags |= StereoRequiredFlag;
}
else {
flags |= WaveTracksSelectedFlag;
flags |= AudioTracksSelectedFlag;
}
}
if( t->GetEndTime() > t->GetStartTime() )
flags |= HasWaveDataFlag;
}
@ -5710,6 +5709,7 @@ void MenuCommandHandler::OnPaste(const CommandContext &context)
bool bPastedSomething = false;
auto pC = clipTrackRange.begin();
size_t nnChannels, ncChannels;
while (*pN && *pC) {
auto n = *pN;
auto c = *pC;
@ -5764,15 +5764,34 @@ void MenuCommandHandler::OnPaste(const CommandContext &context)
_("Pasting one type of track into another is not allowed.")
};
// We should need this check only each time we visit the leading
// channel
if ( n->IsLeader() ) {
wxASSERT( c->IsLeader() ); // the iteration logic should ensure this
auto cChannels = TrackList::Channels(c);
ncChannels = cChannels.size();
auto nChannels = TrackList::Channels(n);
nnChannels = nChannels.size();
// When trying to copy from stereo to mono track, show error and exit
// TODO: Automatically offer user to mix down to mono (unfortunately
// this is not easy to implement
if (c->GetLinked() && !n->GetLinked())
if (ncChannels > nnChannels)
{
if (ncChannels > 2) {
// TODO: more-than-two-channels-message
// Re-word the error message
}
// else
// Throw, so that any previous changes to the project in this loop
// are discarded.
throw SimpleMessageBoxException{
_("Copying stereo audio into a mono track is not allowed.")
};
}
}
if (!ff)
ff = n;
@ -5807,11 +5826,17 @@ void MenuCommandHandler::OnPaste(const CommandContext &context)
}
);
--nnChannels;
--ncChannels;
// When copying from mono to stereo track, paste the wave form
// to both channels
if (n->GetLinked() && !c->GetLinked())
// TODO: more-than-two-channels
// This will replicate the last pasted channel as many times as needed
while (nnChannels > 0 && ncChannels == 0)
{
n = * ++ pN;
--nnChannels;
n->TypeSwitch(
[&](WaveTrack *wn){

41
src/Mix.cpp
View File

@ -49,29 +49,24 @@ void MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
uLeft.reset(), uRight.reset();
// This function was formerly known as "Quick Mix".
const Track *t;
bool mono = false; /* flag if output can be mono without loosing anything*/
bool oneinput = false; /* flag set to true if there is only one input track
(mono or stereo) */
TrackListIterator iter(tracks);
SelectedTrackListOfKindIterator usefulIter(Track::Wave, tracks);
const auto trackRange = tracks->Selected< const WaveTrack >();
auto first = *trackRange.begin();
// this only iterates tracks which are relevant to this function, i.e.
// selected WaveTracks. The tracklist is (confusingly) the list of all
// tracks in the project
int numWaves = 0; /* number of wave tracks in the selection */
int numMono = 0; /* number of mono, centre-panned wave tracks in selection*/
t = iter.First();
while (t) {
if (t->GetSelected() && t->GetKind() == Track::Wave) {
for(auto wt : trackRange) {
numWaves++;
float pan = ((WaveTrack*)t)->GetPan();
if (t->GetChannel() == Track::MonoChannel && pan == 0)
float pan = wt->GetPan();
if (wt->GetChannel() == Track::MonoChannel && pan == 0)
numMono++;
}
t = iter.Next();
}
if (numMono == numWaves)
mono = true;
@ -88,13 +83,11 @@ void MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
double tstart, tend; // start and end times for one track.
WaveTrackConstArray waveArray;
t = iter.First();
while (t) {
if (t->GetSelected() && t->GetKind() == Track::Wave) {
waveArray.push_back(Track::Pointer<const WaveTrack>(t));
tstart = t->GetStartTime();
tend = t->GetEndTime();
for(auto wt : trackRange) {
waveArray.push_back( Track::Pointer< const WaveTrack >( wt ) );
tstart = wt->GetStartTime();
tend = wt->GetEndTime();
if (tend > mixEndTime)
mixEndTime = tend;
// try and get the start time. If the track is empty we will get 0,
@ -111,22 +104,21 @@ void MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
} else if (tstart < mixStartTime)
mixStartTime = tstart; // have a start, only make it smaller
} // end if start and end are different
} // end if track is a selected WaveTrack.
/** @TODO: could we not use a SelectedTrackListOfKindIterator here? */
t = iter.Next();
}
/* create the destination track (NEW track) */
if ((numWaves == 1) || ((numWaves == 2) && (usefulIter.First()->GetLink() != NULL)))
if (numWaves == TrackList::Channels(first).size())
oneinput = true;
// only one input track (either 1 mono or one linked stereo pair)
auto mixLeft = trackFactory->NewWaveTrack(format, rate);
if (oneinput)
mixLeft->SetName(usefulIter.First()->GetName()); /* set name of output track to be the same as the sole input track */
mixLeft->SetName(first->GetName()); /* set name of output track to be the same as the sole input track */
else
mixLeft->SetName(_("Mix"));
mixLeft->SetOffset(mixStartTime);
// TODO: more-than-two-channels
decltype(mixLeft) mixRight{};
if (mono) {
mixLeft->SetChannel(Track::MonoChannel);
@ -134,10 +126,11 @@ void MixAndRender(TrackList *tracks, TrackFactory *trackFactory,
else {
mixRight = trackFactory->NewWaveTrack(format, rate);
if (oneinput) {
if (usefulIter.First()->GetLink() != NULL) // we have linked track
mixRight->SetName(usefulIter.First()->GetLink()->GetName()); /* set name to match input track's right channel!*/
auto channels = TrackList::Channels(first);
if (channels.size() > 1)
mixRight->SetName((*channels.begin().advance(1))->GetName()); /* set name to match input track's right channel!*/
else
mixRight->SetName(usefulIter.First()->GetName()); /* set name to that of sole input channel */
mixRight->SetName(first->GetName()); /* set name to that of sole input channel */
}
else
mixRight->SetName(_("Mix"));

5
src/MixerBoard.cpp
View File

@ -334,9 +334,10 @@ WaveTrack *MixerTrackCluster::GetWave() const
WaveTrack *MixerTrackCluster::GetRight() const
{
// TODO: more-than-two-channels
auto left = GetWave();
if (left)
return static_cast<WaveTrack*>(left->GetLink());
return * ++ TrackList::Channels(left).begin();
else
return nullptr;
}
@ -981,9 +982,9 @@ void MixerBoard::UpdateTrackClusters()
size_t nClusterCount = mMixerTrackClusters.size();
unsigned int nClusterIndex = 0;
MixerTrackCluster* pMixerTrackCluster = NULL;
Track* pTrack;
for (auto pPlayableTrack: mTracks->Leaders<PlayableTrack>()) {
// TODO: more-than-two-channels
auto spTrack = Track::Pointer<PlayableTrack>( pPlayableTrack );
if (nClusterIndex < nClusterCount)
{

24
src/Screenshot.cpp
View File

@ -703,16 +703,20 @@ void ScreenFrame::OnOneHour(wxCommandEvent & WXUNUSED(event))
void ScreenFrame::SizeTracks(int h)
{
TrackListIterator iter(mContext.GetProject()->GetTracks());
for (Track * t = iter.First(); t; t = iter.Next()) {
if (t->GetKind() == Track::Wave) {
if (t->GetLink()) {
t->SetHeight(h);
}
else {
t->SetHeight(h*2);
}
}
// h is the height for a channel
// Set the height of a mono track twice as high
// TODO: more-than-two-channels
// If there should be more-than-stereo tracks, this makes
// each channel as high as for a stereo channel
auto tracks = mContext.GetProject()->GetTracks();
for (auto t : tracks->Leaders<WaveTrack>()) {
auto channels = TrackList::Channels(t);
auto nChannels = channels.size();
auto height = nChannels == 1 ? 2 * h : h;
for (auto channel : channels)
channel->SetHeight(height);
}
mContext.GetProject()->RedrawProject();
}

67
src/TrackPanelResizeHandle.cpp
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@ -26,6 +26,8 @@ Paul Licameli split from TrackPanel.cpp
HitTestPreview TrackPanelResizeHandle::HitPreview(bool bLinked)
{
// TODO: more-than-two-channels-message
static wxCursor resizeCursor{ wxCURSOR_SIZENS };
/// When in the resize area we can adjust size or relative size.
@ -59,41 +61,35 @@ UIHandle::Result TrackPanelResizeHandle::Click
}
TrackPanelResizeHandle::TrackPanelResizeHandle
( const std::shared_ptr<Track> &track, int y, const AudacityProject *pProject )
( const std::shared_ptr<Track> &track, int y )
: mpTrack{ track }
, mMouseClickY( y )
{
auto tracks = pProject->GetTracks();
auto prev = * -- tracks->Find(track.get());
auto next = * ++ tracks->Find(track.get());
// TODO: more-than-two-channels
//STM: Determine whether we should rescale one or two tracks
if (prev && prev->GetLink() == track.get()) {
// mpTrack is the lower track
mInitialTrackHeight = track->GetHeight();
mInitialActualHeight = track->GetActualHeight();
mInitialMinimized = track->GetMinimized();
mInitialUpperTrackHeight = prev->GetHeight();
mInitialUpperActualHeight = prev->GetActualHeight();
auto channels = TrackList::Channels(track.get());
auto last = *channels.rbegin();
mInitialTrackHeight = last->GetHeight();
mInitialActualHeight = last->GetActualHeight();
mInitialMinimized = last->GetMinimized();
if (channels.size() > 1) {
auto first = *channels.begin();
mInitialUpperTrackHeight = first->GetHeight();
mInitialUpperActualHeight = first->GetActualHeight();
if (track.get() == *channels.rbegin())
// capturedTrack is the lowest track
mMode = IsResizingBelowLinkedTracks;
}
else if (next && track->GetLink() == next) {
// mpTrack is the upper track
mInitialTrackHeight = next->GetHeight();
mInitialActualHeight = next->GetActualHeight();
mInitialMinimized = next->GetMinimized();
mInitialUpperTrackHeight = track->GetHeight();
mInitialUpperActualHeight = track->GetActualHeight();
else
// capturedTrack is not the lowest track
mMode = IsResizingBetweenLinkedTracks;
}
else {
// DM: Save the initial mouse location and the initial height
mInitialTrackHeight = track->GetHeight();
mInitialActualHeight = track->GetActualHeight();
mInitialMinimized = track->GetMinimized();
else
mMode = IsResizing;
}
}
UIHandle::Result TrackPanelResizeHandle::Drag
(const TrackPanelMouseEvent &evt, AudacityProject *pProject)
@ -113,23 +109,24 @@ UIHandle::Result TrackPanelResizeHandle::Drag
// This used to be in HandleResizeClick(), but simply clicking
// on a resize border would switch the minimized state.
if (pTrack->GetMinimized()) {
Track *link = pTrack->GetLink();
auto channels = TrackList::Channels( pTrack.get() );
for (auto channel : channels) {
channel->SetHeight(channel->GetHeight());
channel->SetMinimized(false);
}
pTrack->SetHeight(pTrack->GetHeight());
pTrack->SetMinimized(false);
if (link) {
link->SetHeight(link->GetHeight());
link->SetMinimized(false);
if (channels.size() > 1) {
// Initial values must be reset since they weren't based on the
// minimized heights.
mInitialUpperTrackHeight = link->GetHeight();
mInitialTrackHeight = pTrack->GetHeight();
mInitialUpperTrackHeight = (*channels.begin())->GetHeight();
mInitialTrackHeight = (*channels.rbegin())->GetHeight();
}
}
// Common pieces of code for MONO_WAVE_PAN and otherwise.
auto doResizeBelow = [&] (Track *prev, bool WXUNUSED(vStereo)) {
// TODO: more-than-two-channels
double proportion = static_cast < double >(mInitialTrackHeight)
/ (mInitialTrackHeight + mInitialUpperTrackHeight);
@ -150,6 +147,8 @@ UIHandle::Result TrackPanelResizeHandle::Drag
};
auto doResizeBetween = [&] (Track *next, bool WXUNUSED(vStereo)) {
// TODO: more-than-two-channels
int newUpperTrackHeight = mInitialUpperTrackHeight + delta;
int newTrackHeight = mInitialTrackHeight - delta;

4
src/TrackPanelResizeHandle.h
View File

@ -22,9 +22,7 @@ class TrackPanelResizeHandle final : public UIHandle
TrackPanelResizeHandle(const TrackPanelResizeHandle&) = delete;
public:
explicit TrackPanelResizeHandle
( const std::shared_ptr<Track> &pTrack, int y,
const AudacityProject *pProject );
explicit TrackPanelResizeHandle( const std::shared_ptr<Track> &pTrack, int y );
TrackPanelResizeHandle &operator=(const TrackPanelResizeHandle&) = default;

2
src/TrackPanelResizerCell.cpp
View File

@ -28,7 +28,7 @@ std::vector<UIHandlePtr> TrackPanelResizerCell::HitTest
auto pTrack = mpTrack.lock();
if (pTrack) {
auto result = std::make_shared<TrackPanelResizeHandle>(
pTrack, st.state.m_y, pProject );
pTrack, st.state.m_y );
result = AssignUIHandlePtr(mResizeHandle, result);
results.push_back(result);
}

64
src/effects/Effect.cpp
View File

@ -1359,10 +1359,9 @@ bool Effect::ProcessPass()
if (!left->GetSelected())
return fallthrough();
WaveTrack *right;
sampleCount len;
sampleCount leftStart;
sampleCount rightStart;
sampleCount rightStart = 0;
if (!isGenerator)
{
@ -1376,48 +1375,37 @@ bool Effect::ProcessPass()
mSampleCnt = left->TimeToLongSamples(mDuration);
}
mNumChannels = 1;
mNumChannels = 0;
WaveTrack *right{};
if (left->GetChannel() == Track::LeftChannel)
{
map[0] = ChannelNameFrontLeft;
}
else if (left->GetChannel() == Track::RightChannel)
{
map[0] = ChannelNameFrontRight;
}
// Iterate either over one track which could be any channel,
// or if multichannel, then over all channels of left,
// which is a leader.
for (auto channel :
TrackList::Channels(left).StartingWith(left)) {
if (channel->GetChannel() == Track::LeftChannel)
map[mNumChannels] = ChannelNameFrontLeft;
else if (channel->GetChannel() == Track::RightChannel)
map[mNumChannels] = ChannelNameFrontRight;
else
{
map[0] = ChannelNameMono;
}
map[1] = ChannelNameEOL;
map[mNumChannels] = ChannelNameMono;
right = NULL;
rightStart = 0;
if (left->GetLinked() && multichannel)
{
// Assume linked track is wave
right = static_cast<WaveTrack *>(left->GetLink());
if (!isGenerator)
{
GetSamples(right, &rightStart, &len);
}
++ mNumChannels;
map[mNumChannels] = ChannelNameEOL;
if (! multichannel)
break;
if (mNumChannels == 2) {
// TODO: more-than-two-channels
right = channel;
clear = false;
mNumChannels = 2;
if (!isGenerator)
GetSamples(right, &rightStart, &len);
if (right->GetChannel() == Track::LeftChannel)
{
map[1] = ChannelNameFrontLeft;
// Ignore other channels
break;
}
else if (right->GetChannel() == Track::RightChannel)
{
map[1] = ChannelNameFrontRight;
}
else
{
map[1] = ChannelNameMono;
}
map[2] = ChannelNameEOL;
}
// Let the client know the sample rate

40
src/effects/StereoToMono.cpp
View File

@ -75,24 +75,20 @@ bool EffectStereoToMono::Process()
this->CopyInputTracks(); // Set up mOutputTracks.
bool bGoodResult = true;
auto trackRange = mOutputTracks->Selected< WaveTrack >();
mLeftTrack = *trackRange.first;
auto trackRange = mOutputTracks->SelectedLeaders< WaveTrack >();
bool refreshIter = false;
if(mLeftTrack)
{
// create a NEW WaveTrack to hold all of the output
AudacityProject *p = GetActiveProject();
mOutTrack = p->GetTrackFactory()->NewWaveTrack(floatSample, mLeftTrack->GetRate());
}
int count = 0;
while ( trackRange.first != trackRange.second ) {
mLeftTrack = *trackRange.first;
if (mLeftTrack->GetLinked()) {
auto channels = TrackList::Channels( mLeftTrack );
if (channels.size() != 2) {
// TODO: more-than-two-channels
++ trackRange.first;
continue;
}
// Assume linked track is wave
mRightTrack = * ++ trackRange.first;
mRightTrack = * channels.rbegin();
if ((mLeftTrack->GetRate() == mRightTrack->GetRate())) {
auto leftTrackStart = mLeftTrack->TimeToLongSamples(mLeftTrack->GetStartTime());
@ -107,15 +103,12 @@ bool EffectStereoToMono::Process()
if (!bGoodResult)
break;
mOutTrack->Clear(mOutTrack->GetStartTime(), mOutTrack->GetEndTime());
// The right channel has been deleted, so we must restart from the beginning
refreshIter = true;
}
}
if (refreshIter) {
trackRange = mOutputTracks->Selected< WaveTrack >();
trackRange = mOutputTracks->SelectedLeaders< WaveTrack >();
refreshIter = false;
}
else
@ -128,11 +121,6 @@ bool EffectStereoToMono::Process()
return bGoodResult;
}
void EffectStereoToMono::End()
{
mOutTrack.reset();
}
bool EffectStereoToMono::ProcessOne(int count)
{
float curLeftFrame;
@ -145,6 +133,10 @@ bool EffectStereoToMono::ProcessOne(int count)
Floats rightBuffer{ idealBlockLen };
bool bResult = true;
AudacityProject *p = GetActiveProject();
auto outTrack =
p->GetTrackFactory()->NewWaveTrack(floatSample, mLeftTrack->GetRate());
while (index < mEnd) {
bResult &= mLeftTrack->Get((samplePtr)leftBuffer.get(), floatSample, index, idealBlockLen);
bResult &= mRightTrack->Get((samplePtr)rightBuffer.get(), floatSample, index, idealBlockLen);
@ -156,15 +148,15 @@ bool EffectStereoToMono::ProcessOne(int count)
curMonoFrame = (curLeftFrame + curRightFrame) / 2.0;
leftBuffer[i] = curMonoFrame;
}
mOutTrack->Append((samplePtr)leftBuffer.get(), floatSample, limit);
outTrack->Append((samplePtr)leftBuffer.get(), floatSample, limit);
if (TrackProgress(count, 2.*(index.as_double() / (mEnd - mStart).as_double())))
return false;
}
double minStart = wxMin(mLeftTrack->GetStartTime(), mRightTrack->GetStartTime());
mLeftTrack->Clear(mLeftTrack->GetStartTime(), mLeftTrack->GetEndTime());
mOutTrack->Flush();
mLeftTrack->Paste(minStart, mOutTrack.get());
outTrack->Flush();
mLeftTrack->Paste(minStart, outTrack.get());
mLeftTrack->SetLinked(false);
mRightTrack->SetLinked(false);
mLeftTrack->SetChannel(Track::MonoChannel);

2
src/effects/StereoToMono.h
View File

@ -41,7 +41,6 @@ public:
// Effect implementation
bool Process() override;
void End() override;
bool IsHidden() override;
private:
@ -54,7 +53,6 @@ private:
sampleCount mEnd;
WaveTrack *mLeftTrack;
WaveTrack *mRightTrack;
std::unique_ptr<WaveTrack> mOutTrack;
};
#endif

10
src/effects/nyquist/Nyquist.cpp
View File

@ -769,7 +769,7 @@ bool NyquistEffect::Process()
Effect::MessageBox(message, wxOK | wxCENTRE | wxICON_EXCLAMATION, _("Nyquist Error"));
}
auto trackRange = mOutputTracks->Selected< WaveTrack >();
auto trackRange = mOutputTracks->Selected< WaveTrack >() + &Track::IsLeader;
// Keep track of whether the current track is first selected in its sync-lock group
// (we have no idea what the length of the returned audio will be, so we have
@ -785,10 +785,14 @@ bool NyquistEffect::Process()
if (bOnePassTool) {
}
else {
if (mCurTrack[0]->GetLinked()) {
auto channels = TrackList::Channels(mCurTrack[0]);
if (channels.size() > 1) {
// TODO: more-than-two-channels
// Pay attention to consistency of mNumSelectedChannels
// with the running tally made by this loop!
mCurNumChannels = 2;
mCurTrack[1] = * ++ iter;
mCurTrack[1] = * ++ channels.first;
if (mCurTrack[1]->GetRate() != mCurTrack[0]->GetRate()) {
Effect::MessageBox(_("Sorry, cannot apply effect on stereo tracks where the tracks don't match."),
wxOK | wxCENTRE);

94
src/tracks/playabletrack/wavetrack/ui/WaveTrackControls.cpp
View File

@ -562,6 +562,8 @@ protected:
void OnChannelChange(wxCommandEvent & event);
void OnMergeStereo(wxCommandEvent & event);
// TODO: more-than-two-channels
// How should we define generalized channel manipulation operations?
void SplitStereo(bool stereo);
void OnSwapChannels(wxCommandEvent & event);
@ -603,23 +605,28 @@ void WaveTrackMenuTable::InitMenu(Menu *pMenu, void *pUserData)
(display == WaveTrack::Spectrum) && !bAudioBusy);
AudacityProject *const project = ::GetActiveProject();
TrackList *const tracks = project->GetTracks();
bool unsafe = EffectManager::Get().RealtimeIsActive() &&
project->IsAudioActive();
const bool isMono = !pTrack->GetLink();
auto nChannels = TrackList::Channels(pTrack).size();
const bool isMono = ( nChannels == 1 );
const bool isStereo = ( nChannels == 2 );
// Maybe more than stereo tracks some time?
if ( isMono )
{
mpData = static_cast<TrackControls::InitMenuData*>(pUserData);
WaveTrack *const pTrack = static_cast<WaveTrack*>(mpData->pTrack);
TrackList *const tracks = project->GetTracks();
auto next = * ++ tracks->Find(pTrack);
if (isMono) {
const bool canMakeStereo =
(next && !next->GetLinked()
&& pTrack->GetKind() == Track::Wave
&& next->GetKind() == Track::Wave);
(next &&
TrackList::Channels(next).size() == 1 &&
track_cast<WaveTrack*>(next));
pMenu->Enable(OnMergeStereoID, canMakeStereo && !unsafe);
int itemId;
@ -647,8 +654,8 @@ void WaveTrackMenuTable::InitMenu(Menu *pMenu, void *pUserData)
return end != std::find(checkedIds.begin(), end, id);
});
pMenu->Enable(OnSwapChannelsID, !isMono && !unsafe);
// Enable this only for properly stereo tracks:
pMenu->Enable(OnSwapChannelsID, isStereo && !unsafe);
pMenu->Enable(OnSplitStereoID, !isMono && !unsafe);
#ifndef EXPERIMENTAL_DA
@ -836,11 +843,16 @@ void WaveTrackMenuTable::OnChannelChange(wxCommandEvent & event)
/// Merge two tracks into one stereo track ??
void WaveTrackMenuTable::OnMergeStereo(wxCommandEvent &)
{
AudacityProject *const project = ::GetActiveProject();
const auto tracks = project->GetTracks();
WaveTrack *const pTrack = static_cast<WaveTrack*>(mpData->pTrack);
wxASSERT(pTrack);
auto partner = static_cast< WaveTrack * >
( *tracks->Find( pTrack ).advance( 1 ) );
pTrack->SetLinked(true);
// Assume partner is wave or null
const auto partner = static_cast<WaveTrack*>(pTrack->GetLink());
if (partner) {
// Set partner's parameters to match target.
@ -884,51 +896,40 @@ void WaveTrackMenuTable::OnMergeStereo(wxCommandEvent &)
mpData->result = RefreshCode::RefreshAll;
}
/// Split a stereo track into two tracks...
/// Split a stereo track (or more-than-stereo?) into two (or more) tracks...
void WaveTrackMenuTable::SplitStereo(bool stereo)
{
WaveTrack *const pTrack = static_cast<WaveTrack*>(mpData->pTrack);
wxASSERT(pTrack);
AudacityProject *const project = ::GetActiveProject();
auto channels = TrackList::Channels( pTrack );
if (stereo)
pTrack->SetPanFromChannelType();
pTrack->SetChannel(Track::MonoChannel);
// Assume partner is present, and is wave
const auto partner = static_cast<WaveTrack*>(pTrack->GetLink());
wxASSERT(partner);
if (!partner)
return;
if (partner)
{
int totalHeight = 0;
int nChannels = 0;
for (auto channel : channels) {
// Keep original stereo track name.
partner->SetName(pTrack->GetName());
channel->SetName(pTrack->GetName());
if (stereo)
partner->SetPanFromChannelType();
partner->SetChannel(Track::MonoChannel);
channel->SetPanFromChannelType();
channel->SetChannel(Track::MonoChannel);
//On Demand - have each channel add its own.
if (ODManager::IsInstanceCreated() && partner->GetKind() == Track::Wave)
ODManager::Instance()->MakeWaveTrackIndependent(partner);
if (ODManager::IsInstanceCreated())
ODManager::Instance()->MakeWaveTrackIndependent(channel);
//make sure no channel is smaller than its minimum height
if (channel->GetHeight() < channel->GetMinimizedHeight())
channel->SetHeight(channel->GetMinimizedHeight());
totalHeight += channel->GetHeight();
++nChannels;
}
pTrack->SetLinked(false);
//make sure neither track is smaller than its minimum height
if (pTrack->GetHeight() < pTrack->GetMinimizedHeight())
pTrack->SetHeight(pTrack->GetMinimizedHeight());
if (partner)
{
if (partner->GetHeight() < partner->GetMinimizedHeight())
partner->SetHeight(partner->GetMinimizedHeight());
int averageHeight = totalHeight / nChannels;
for (auto channel : channels)
// Make tracks the same height
if (pTrack->GetHeight() != partner->GetHeight())
{
pTrack->SetHeight((pTrack->GetHeight() + partner->GetHeight()) / 2.0);
partner->SetHeight(pTrack->GetHeight());
}
}
channel->SetHeight( averageHeight );
mpData->result = RefreshCode::RefreshAll;
}
@ -939,14 +940,19 @@ void WaveTrackMenuTable::OnSwapChannels(wxCommandEvent &)
AudacityProject *const project = ::GetActiveProject();
WaveTrack *const pTrack = static_cast<WaveTrack*>(mpData->pTrack);
// Assume partner is wave or null
const auto partner = static_cast<WaveTrack*>(pTrack->GetLink());
auto channels = TrackList::Channels( pTrack );
if (channels.size() != 2)
return;
Track *const focused = project->GetTrackPanel()->GetFocusedTrack();
const bool hasFocus =
(focused == pTrack || focused == partner);
const bool hasFocus = channels.contains( focused );
auto first = *channels.begin();
auto partner = *channels.rbegin();
SplitStereo(false);
pTrack->SetChannel(Track::RightChannel);
first->SetChannel(Track::RightChannel);
partner->SetChannel(Track::LeftChannel);
TrackList *const tracks = project->GetTracks();