void Song::setTempo()
{
Engine::mixer()->requestChangeInModel();
const bpm_t tempo = ( bpm_t ) m_tempoModel.value();
PlayHandleList & playHandles = Engine::mixer()->playHandles();
for( PlayHandleList::Iterator it = playHandles.begin();
it != playHandles.end(); ++it )
{
NotePlayHandle * nph = dynamic_cast<NotePlayHandle *>( *it );
if( nph && !nph->isReleased() )
{
nph->lock();
nph->resize( tempo );
nph->unlock();
}
}
Engine::mixer()->doneChangeInModel();
Engine::updateFramesPerTick();
m_vstSyncController.setTempo( tempo );
emit tempoChanged( tempo );
}
bool NotePlayHandle::operator==( const NotePlayHandle & _nph ) const
{
return length() == _nph.length() &&
pos() == _nph.pos() &&
key() == _nph.key() &&
getVolume() == _nph.getVolume() &&
getPanning() == _nph.getPanning() &&
m_instrumentTrack == _nph.m_instrumentTrack &&
m_frames == _nph.m_frames &&
offset() == _nph.offset() &&
m_totalFramesPlayed == _nph.m_totalFramesPlayed &&
m_released == _nph.m_released &&
m_hasParent == _nph.m_hasParent &&
m_origBaseNote == _nph.m_origBaseNote &&
m_muted == _nph.m_muted &&
m_midiChannel == _nph.m_midiChannel &&
m_origin == _nph.m_origin;
}
void sf2Instrument::play( sampleFrame * _working_buffer )
{
const fpp_t frames = Engine::mixer()->framesPerPeriod();
// set midi pitch for this period
const int currentMidiPitch = instrumentTrack()->midiPitch();
if( m_lastMidiPitch != currentMidiPitch )
{
m_lastMidiPitch = currentMidiPitch;
m_synthMutex.lock();
fluid_synth_pitch_bend( m_synth, m_channel, m_lastMidiPitch );
m_synthMutex.unlock();
}
const int currentMidiPitchRange = instrumentTrack()->midiPitchRange();
if( m_lastMidiPitchRange != currentMidiPitchRange )
{
m_lastMidiPitchRange = currentMidiPitchRange;
m_synthMutex.lock();
fluid_synth_pitch_wheel_sens( m_synth, m_channel, m_lastMidiPitchRange );
m_synthMutex.unlock();
}
// if we have no new noteons/noteoffs, just render a period and call it a day
if( m_playingNotes.isEmpty() )
{
renderFrames( frames, _working_buffer );
instrumentTrack()->processAudioBuffer( _working_buffer, frames, NULL );
return;
}
// processing loop
// go through noteplayhandles in processing order
f_cnt_t currentFrame = 0;
while( ! m_playingNotes.isEmpty() )
{
// find the note with lowest offset
NotePlayHandle * currentNote = m_playingNotes[0];
for( int i = 1; i < m_playingNotes.size(); ++i )
{
SF2PluginData * currentData = static_cast<SF2PluginData *>( currentNote->m_pluginData );
SF2PluginData * iData = static_cast<SF2PluginData *>( m_playingNotes[i]->m_pluginData );
if( currentData->offset > iData->offset )
{
currentNote = m_playingNotes[i];
}
}
// process the current note:
// first see if we're synced in frame count
SF2PluginData * currentData = static_cast<SF2PluginData *>( currentNote->m_pluginData );
if( currentData->offset > currentFrame )
{
renderFrames( currentData->offset - currentFrame, _working_buffer + currentFrame );
currentFrame = currentData->offset;
}
if( currentData->isNew )
{
noteOn( currentData );
if( currentNote->isReleased() ) // if the note is released during the same period, we have to process it again for noteoff
{
currentData->isNew = false;
currentData->offset = currentNote->framesBeforeRelease();
}
else // otherwise remove the handle
{
m_playingNotesMutex.lock();
m_playingNotes.remove( m_playingNotes.indexOf( currentNote ) );
m_playingNotesMutex.unlock();
}
}
else
{
noteOff( currentData );
m_playingNotesMutex.lock();
m_playingNotes.remove( m_playingNotes.indexOf( currentNote ) );
m_playingNotesMutex.unlock();
}
}
if( currentFrame < frames )
{
renderFrames( frames - currentFrame, _working_buffer + currentFrame );
}
instrumentTrack()->processAudioBuffer( _working_buffer, frames, NULL );
}
bool InstrumentTrack::play( const MidiTime & _start, const fpp_t _frames,
const f_cnt_t _offset, int _tco_num )
{
if( ! m_instrument || ! tryLock() )
{
return false;
}
const float frames_per_tick = Engine::framesPerTick();
tcoVector tcos;
::BBTrack * bb_track = NULL;
if( _tco_num >= 0 )
{
TrackContentObject * tco = getTCO( _tco_num );
tcos.push_back( tco );
bb_track = BBTrack::findBBTrack( _tco_num );
}
else
{
getTCOsInRange( tcos, _start, _start + static_cast<int>(
_frames / frames_per_tick ) );
}
// Handle automation: detuning
for( NotePlayHandleList::Iterator it = m_processHandles.begin();
it != m_processHandles.end(); ++it )
{
( *it )->processMidiTime( _start );
}
if ( tcos.size() == 0 )
{
unlock();
return false;
}
bool played_a_note = false; // will be return variable
for( tcoVector::Iterator it = tcos.begin(); it != tcos.end(); ++it )
{
Pattern* p = dynamic_cast<Pattern*>( *it );
// everything which is not a pattern or muted won't be played
if( p == NULL || ( *it )->isMuted() )
{
continue;
}
MidiTime cur_start = _start;
if( _tco_num < 0 )
{
cur_start -= p->startPosition();
}
// get all notes from the given pattern...
const NoteVector & notes = p->notes();
// ...and set our index to zero
NoteVector::ConstIterator nit = notes.begin();
// very effective algorithm for playing notes that are
// posated within the current sample-frame
if( cur_start > 0 )
{
// skip notes which are posated before start-tact
while( nit != notes.end() && ( *nit )->pos() < cur_start )
{
++nit;
}
}
Note * cur_note;
while( nit != notes.end() &&
( cur_note = *nit )->pos() == cur_start )
{
if( cur_note->length() != 0 )
{
const f_cnt_t note_frames =
cur_note->length().frames(
frames_per_tick );
NotePlayHandle* notePlayHandle = NotePlayHandleManager::acquire( this, _offset, note_frames, *cur_note );
notePlayHandle->setBBTrack( bb_track );
// are we playing global song?
if( _tco_num < 0 )
{
// then set song-global offset of pattern in order to
// properly perform the note detuning
notePlayHandle->setSongGlobalParentOffset( p->startPosition() );
}
Engine::mixer()->addPlayHandle( notePlayHandle );
played_a_note = true;
}
++nit;
}
}
unlock();
return played_a_note;
}
