bool WaveTrack::InsertSilence(double t, double len)
{
if (len <= 0)
return false;
if (mClips.IsEmpty())
{
// Special case if there is no clip yet
WaveClip* clip = CreateClip();
return clip->InsertSilence(0, len);
}
for (WaveClipList::Node* it=GetClipIterator(); it; it=it->GetNext())
{
WaveClip *clip = it->GetData();
if (clip->GetStartTime() > t)
clip->Offset(len);
else if (clip->GetEndTime() > t)
{
return clip->InsertSilence(t, len);
}
}
return true;
}
bool WaveTrack::Join(double t0, double t1)
{
// Merge all WaveClips overlapping selection into one
WaveClipList::Node* it;
WaveClipList clipsToDelete;
WaveClip *newClip;
for (it=GetClipIterator(); it; it=it->GetNext())
{
WaveClip *clip = it->GetData();
if (clip->GetStartTime() < t1-(1.0/mRate) &&
clip->GetEndTime()-(1.0/mRate) > t0) {
// Put in sorted order
int i;
for(i=0; i<clipsToDelete.GetCount(); i++)
if (clipsToDelete[i]->GetStartTime() > clip->GetStartTime())
break;
//printf("Insert clip %.6f at position %d\n", clip->GetStartTime(), i);
clipsToDelete.Insert(i, clip);
}
}
newClip = CreateClip();
double t = clipsToDelete[0]->GetOffset();
newClip->SetOffset(t);
for(it=clipsToDelete.GetFirst(); it; it=it->GetNext())
{
WaveClip *clip = it->GetData();
//printf("t=%.6f adding clip (offset %.6f, %.6f ... %.6f)\n",
// t, clip->GetOffset(), clip->GetStartTime(), clip->GetEndTime());
if (clip->GetOffset() - t > (1.0 / mRate)) {
double addedSilence = (clip->GetOffset() - t);
//printf("Adding %.6f seconds of silence\n");
newClip->InsertSilence(t, addedSilence);
t += addedSilence;
}
//printf("Pasting at %.6f\n", t);
newClip->Paste(t, clip);
t = newClip->GetEndTime();
mClips.DeleteObject(clip);
delete clip;
}
return true;
}
