bool Scene::setProfile( Profile &p )
{
bool ok = true;
double duration = profile.getVideoFrameDuration();
profile = p;
double margin = profile.getVideoFrameDuration() / 4.0;
if ( duration != profile.getVideoFrameDuration() ) {
duration = profile.getVideoFrameDuration();
for ( int i = 0; i < tracks.count(); ++i ) {
Track *t = tracks[i];
for ( int j = 0; j < t->clipCount(); ++j ) {
Clip *c = t->clipAt( j );
c->setFrameDuration( duration );
double newPos = nearestPTS( c->position(), duration );
if ( !c->getTransition() && j > 0 ) {
Clip *prev = t->clipAt( j - 1 );
if ( newPos < prev->position() + prev->length() - margin )
newPos = prev->position() + prev->length();
c->setPosition( newPos );
}
else if ( canMove( c, c->length(), newPos, i ) )
move( c, i, newPos, i );
else
ok = false;
}
}
}
return ok;
}
double Scene::nextEdge(double pts)
{
double margin = profile.getVideoFrameDuration() / 4.0;
double npts = 0, max = 0;
for ( int i = 0; i < tracks.count(); ++i ) {
if ( !tracks[ i ]->clipCount() )
continue;
Clip *c = tracks[ i ]->clipAt( tracks[ i ]->clipCount() - 1 );
double d = c->position() + c->length();
if ( d > max )
max = d;
}
npts = max;
for ( int i = 0; i < tracks.count(); ++i ) {
Track *t = tracks[ i ];
for ( int j = 0; j < t->clipCount(); ++j ) {
Clip *c = t->clipAt( j );
double pos = c->position() - margin;
if ( pos > pts && pos < npts ) {
npts = pos + margin;
}
else {
pos += c->length();
if ( pos > pts && pos < npts ) {
npts = pos + margin;
}
}
}
}
return (qAbs(npts - max) < 1) ? max - profile.getVideoFrameDuration() : npts;
}
bool Scene::canMoveMulti( Clip *clip, double clipLength, double &newPos, int track )
{
newPos = nearestPTS( newPos, profile.getVideoFrameDuration() );
double margin = profile.getVideoFrameDuration() / 4.0;
Track *t = tracks[track];
int count = t->clipCount();
if ( newPos >= clip->position() )
return true;
if ( t->clipAt( 0 ) == clip )
return true;
Clip *c;
int k = 0;
while ( k < count ) {
c = t->clipAt( k );
// find clip
if ( c == clip ) {
break;
}
++k;
}
if ( k == count )
return false;
int clipIndex = k;
c = t->clipAt( --k );
if ( newPos - margin < c->position() )
return false;
// we are clipB, we can't end before clipA
if ( newPos + clipLength < c->position() + c->length() - margin )
return false;
// we can't overlap with clip before clipA
if ( --k >= 0 ) {
Clip *prevA = t->clipAt( k );
if ( newPos < prevA->position() + prevA->length() - margin )
return false;
}
// and clipC can't overlap with clipA
if ( clipIndex < count - 1 ) {
Clip *clipC = t->clipAt( clipIndex + 1 );
// clipC has moved with us, calculate its new position
double cpos = clipC->position() + ( newPos - clip->position() );
if ( cpos < c->position() + c->length() - margin ) {
newPos = c->position() + c->length() + clip->position() - clipC->position();
return true;
}
}
return true;
}
void Scene::removeTransitions( Clip *clip, int oldTrack, int newTrack, int newIndex, double clipPos, double clipLength, double margin, bool multi )
{
Track *ot = tracks[oldTrack];
int index = ot->indexOf( clip );
if ( newTrack != oldTrack || index != newIndex ) {
clip->removeTransition();
if ( index < ot->clipCount() - 1 ) {
Clip *c = ot->clipAt( index + 1 );
c->removeTransition();
}
}
else {
if ( !multi && index < ot->clipCount() - 1 ) {
Clip *c = ot->clipAt( index + 1 );
if ( clipPos + clipLength - margin < c->position() )
c->removeTransition();
}
if ( index > 0 ) {
Clip *c = ot->clipAt( index - 1 );
if ( c->position() + c->length() - margin < clipPos )
clip->removeTransition();
}
}
}
void Scene::updateTransitions( Clip *clip, int track, double margin )
{
Track *t = tracks[track];
int index = t->indexOf( clip );
if ( index > 0 ) {
Clip *c = t->clipAt( index - 1 );
if ( clip->position() < c->position() + c->length() - margin )
clip->setTransition( c->position() + c->length() - clip->position() );
}
if ( index < t->clipCount() - 1 ) {
Clip *c = t->clipAt( index + 1 );
if ( c->position() < clip->position() + clip->length() - margin )
c->setTransition( clip->position() + clip->length() - c->position() );
}
}
double Scene::previousEdge(double pts)
{
double margin = profile.getVideoFrameDuration() / 4.0;
double npts = 0;
for ( int i = 0; i < tracks.count(); ++i ) {
Track *t = tracks[ i ];
for ( int j = t->clipCount() -1; j > -1; --j ) {
Clip *c = t->clipAt( j );
double pos = c->position() + c->length() + margin;
if ( pos < pts && pos > npts ) {
npts = pos;
}
else {
pos -= c->length();
if ( pos < pts && pos > npts ) {
npts = pos;
}
}
}
}
return npts;
}
bool Scene::checkPlacement( Clip *clip, int track, double clipPos, double clipLength )
{
double margin = profile.getVideoFrameDuration() / 4.0;
Track *t = tracks[track];
int count = t->clipCount();
// no clip in track yet
if ( !count )
return true;
if ( count == 1 && t->clipAt( 0 ) == clip )
return true;
Clip *c;
int k = 0;
while ( k < count ) {
c = t->clipAt( k );
// obviously, don't check clip against itself
if ( clip && c == clip ) {
++k;
continue;
}
// Track is ordered by Clip::position()
// so 2 clips can't start at same pts on the same track.
if ( qAbs( c->position() - clipPos ) < margin )
return false;
if ( !clipLessThan( margin, c->position(), c->length(), clipPos ) )
break;
++k;
}
// we are the last clip in track and don't overlap with anything
if ( k == count )
return true;
// we are clipA
if ( clipPos < c->position() ) {
// we can't end after clipB
if ( c->position() + c->length() < clipPos + clipLength - margin )
return false;
// and we can't overlap with clipC
int j = k + 1;
while ( j < count ) {
Clip *next = t->clipAt( j++ );
if ( clip && next == clip )
continue;
if ( next->position() < clipPos + clipLength - margin )
return false;
break;
}
}
else {
// we are clipB, we can't end before clipA
if ( clipPos + clipLength < c->position() + c->length() - margin )
return false;
int j = k + 1;
while ( j < count ) {
Clip *next = t->clipAt( j++ );
if ( clip && next == clip )
continue;
// clipC can't overlap with clipA
if ( next->position() < c->position() + c->length() - margin )
return false;
// we can't end after clipC
if ( next->position() + next->length() < clipPos + clipLength - margin )
return false;
// and we can't overlap with clipD
if ( j < count ) {
Clip *d = t->clipAt( j );
if ( d->position() < clipPos + clipLength - margin )
return false;
}
break;
}
}
return true;
}
Clip* Scene::sceneSplitClip( Clip *clip, int track, double pts )
{
pts = nearestPTS( pts, profile.getVideoFrameDuration() );
double start = clip->position();
if (clip->getTransition()) {
start += clip->getTransition()->length();
}
double end = clip->position() + clip->length();
Track *t = tracks[track];
int cc = t->clipCount();
int index = t->indexOf(clip);
Transition *tail = NULL;
Clip *next = NULL;
if (index > -1 && index < cc - 1) {
next = t->clipAt(index + 1);
if (next->getTransition()) {
end -= next->getTransition()->length() + profile.getVideoFrameDuration();
tail = new Transition(next->getTransition());
}
}
double oldLength = clip->length();
double newLength = pts - clip->position();
resize( clip, newLength, track );
Clip *nc = createClip( clip->getSource(), pts, clip->start() + newLength, oldLength - newLength );
double newPos = nc->position();
nc->setPosition( newPos );
FilterCollection *fc = FilterCollection::getGlobalInstance();
for ( int i = 0; i < clip->videoFilters.count(); ++i ) {
QSharedPointer<GLFilter> f = clip->videoFilters.at( i );
for ( int j = 0; j < fc->videoFilters.count(); ++j ) {
if ( fc->videoFilters[ j ].identifier == f->getIdentifier() ) {
QSharedPointer<Filter> nf = fc->videoFilters[ j ].create();
GLFilter *gf = (GLFilter*)nf.data();
if ( nf->getIdentifier() == "GLCustom" ) {
GLCustom *gc = (GLCustom*)gf;
gc->setCustomParams( f->getParameters().last()->value.toString() );
}
else if ( nf->getIdentifier() == "GLStabilize" ) {
GLStabilize *gs = (GLStabilize*)gf;
gs->setSource( nc->getSource() );
}
f->splitParameters( gf, newLength );
nf->setPosition( nc->position() );
nf->setLength( nc->length() );
nc->videoFilters.append( nf.staticCast<GLFilter>() );
break;
}
}
}
for ( int i = 0; i < clip->audioFilters.count(); ++i ) {
QSharedPointer<AudioFilter> f = clip->audioFilters.at( i );
for ( int j = 0; j < fc->audioFilters.count(); ++j ) {
if ( fc->audioFilters[ j ].identifier == f->getIdentifier() ) {
QSharedPointer<Filter> nf = fc->audioFilters[ j ].create();
AudioFilter *af = (AudioFilter*)nf.data();
f->splitParameters( af, newLength );
nf->setPosition( nc->position() );
nf->setLength( nc->length() );
nc->audioFilters.append( nf.staticCast<AudioFilter>() );
break;
}
}
}
addClip( nc, track );
if (tail) {
next->setTransition(tail);
}
return nc;
}