void ScrubbingToolBar::EnableDisableButtons()
{
const auto scrubButton = mButtons[STBScrubID];
scrubButton->SetEnabled(true);
const auto seekButton = mButtons[STBSeekID];
seekButton->SetEnabled(true);
AudacityProject *p = GetActiveProject();
if (!p) return;
auto &scrubber = p->GetScrubber();
const auto canScrub = scrubber.CanScrub();
if (scrubber.Scrubs()) {
scrubButton->PushDown();
scrubButton->Enable();
}
else {
scrubButton->PopUp();
if (canScrub)
scrubButton->Enable();
else
scrubButton->Disable();
}
if (scrubber.Seeks()) {
seekButton->PushDown();
seekButton->Enable();
}
else {
seekButton->PopUp();
if (canScrub)
seekButton->Enable();
else
seekButton->Disable();
}
const auto barButton = mButtons[STBRulerID];
barButton->Enable();
if (p->GetRulerPanel()->ShowingScrubRuler())
barButton->PushDown();
else
barButton->PopUp();
RegenerateTooltips();
scrubber.CheckMenuItems();
}
int ControlToolBar::PlayPlayRegion(const SelectedRegion &selectedRegion,
const AudioIOStartStreamOptions &options,
PlayMode mode,
PlayAppearance appearance, /* = PlayOption::Straight */
bool backwards, /* = false */
bool playWhiteSpace /* = false */)
{
if (!CanStopAudioStream())
return -1;
// Uncomment this for laughs!
// backwards = true;
double t0 = selectedRegion.t0();
double t1 = selectedRegion.t1();
// SelectedRegion guarantees t0 <= t1, so we need another boolean argument
// to indicate backwards play.
const bool looped = options.playLooped;
if (backwards)
std::swap(t0, t1);
SetPlay(true, appearance);
if (gAudioIO->IsBusy()) {
SetPlay(false);
return -1;
}
const bool cutpreview = appearance == PlayAppearance::CutPreview;
if (cutpreview && t0==t1) {
SetPlay(false);
return -1; /* msmeyer: makes no sense */
}
AudacityProject *p = GetActiveProject();
if (!p) {
SetPlay(false);
return -1; // Should never happen, but...
}
TrackList *t = p->GetTracks();
if (!t) {
mPlay->PopUp();
return -1; // Should never happen, but...
}
p->mLastPlayMode = mode;
bool hasaudio = false;
TrackListIterator iter(t);
for (Track *trk = iter.First(); trk; trk = iter.Next()) {
if (trk->GetKind() == Track::Wave
#ifdef EXPERIMENTAL_MIDI_OUT
|| trk->GetKind() == Track::Note
#endif
) {
hasaudio = true;
break;
}
}
double latestEnd = (playWhiteSpace)? t1 : t->GetEndTime();
if (!hasaudio) {
SetPlay(false);
return -1; // No need to continue without audio tracks
}
#if defined(EXPERIMENTAL_SEEK_BEHIND_CURSOR)
double init_seek = 0.0;
#endif
if (t1 == t0) {
if (looped) {
// play selection if there is one, otherwise
// set start of play region to project start,
// and loop the project from current play position.
if ((t0 > p->GetSel0()) && (t0 < p->GetSel1())) {
t0 = p->GetSel0();
t1 = p->GetSel1();
}
else {
// loop the entire project
t0 = t->GetStartTime();
t1 = t->GetEndTime();
}
} else {
// move t0 to valid range
if (t0 < 0) {
t0 = t->GetStartTime();
}
else if (t0 > t->GetEndTime()) {
t0 = t->GetEndTime();
}
#if defined(EXPERIMENTAL_SEEK_BEHIND_CURSOR)
else {
init_seek = t0; //AC: init_seek is where playback will 'start'
t0 = t->GetStartTime();
}
#endif
}
t1 = t->GetEndTime();
}
else {
// maybe t1 < t0, with backwards scrubbing for instance
if (backwards)
std::swap(t0, t1);
t0 = std::max(0.0, std::min(t0, latestEnd));
t1 = std::max(0.0, std::min(t1, latestEnd));
if (backwards)
std::swap(t0, t1);
}
int token = -1;
bool success = false;
if (t1 != t0) {
if (cutpreview) {
const double tless = std::min(t0, t1);
const double tgreater = std::max(t0, t1);
double beforeLen, afterLen;
gPrefs->Read(wxT("/AudioIO/CutPreviewBeforeLen"), &beforeLen, 2.0);
gPrefs->Read(wxT("/AudioIO/CutPreviewAfterLen"), &afterLen, 1.0);
double tcp0 = tless-beforeLen;
double diff = tgreater - tless;
double tcp1 = (tgreater+afterLen) - diff;
SetupCutPreviewTracks(tcp0, tless, tgreater, tcp1);
if (backwards)
std::swap(tcp0, tcp1);
if (mCutPreviewTracks)
{
AudioIOStartStreamOptions myOptions = options;
myOptions.cutPreviewGapStart = t0;
myOptions.cutPreviewGapLen = t1 - t0;
token = gAudioIO->StartStream(
mCutPreviewTracks->GetWaveTrackArray(false),
WaveTrackArray(),
#ifdef EXPERIMENTAL_MIDI_OUT
NoteTrackArray(),
#endif
tcp0, tcp1, myOptions);
} else
{
// Cannot create cut preview tracks, clean up and exit
SetPlay(false);
SetStop(false);
SetRecord(false);
return -1;
}
} else {
// Lifted the following into AudacityProject::GetDefaultPlayOptions()
/*
if (!timetrack) {
timetrack = t->GetTimeTrack();
}
*/
token = gAudioIO->StartStream(t->GetWaveTrackArray(false),
WaveTrackArray(),
#ifdef EXPERIMENTAL_MIDI_OUT
t->GetNoteTrackArray(false),
#endif
t0, t1, options);
}
if (token != 0) {
success = true;
p->SetAudioIOToken(token);
mBusyProject = p;
#if defined(EXPERIMENTAL_SEEK_BEHIND_CURSOR)
//AC: If init_seek was set, now's the time to make it happen.
gAudioIO->SeekStream(init_seek);
#endif
}
else {
// msmeyer: Show error message if stream could not be opened
wxMessageBox(
_("Error while opening sound device. "
"Please check the playback device settings and the project sample rate."),
_("Error"), wxOK | wxICON_EXCLAMATION, this);
}
}
if (!success) {
SetPlay(false);
SetStop(false);
SetRecord(false);
return -1;
}
// Let other UI update appearance
if (p)
p->GetRulerPanel()->HideQuickPlayIndicator();
return token;
}