void JackOutput::updateTransportInfo()
{
if ( locate_countdown == 1 )
locate( locate_frame );
if ( locate_countdown > 0 )
locate_countdown--;
if ( Preferences::get_instance()->m_bJackTransportMode != Preferences::USE_JACK_TRANSPORT ) return;
m_JackTransportState = jack_transport_query( client, &m_JackTransportPos );
// update m_transport with jack-transport data
switch ( m_JackTransportState ) {
case JackTransportStopped:
m_transport.m_status = TransportInfo::STOPPED;
//infoLog( "[updateTransportInfo] STOPPED - frames: " + to_string(m_transportPos.frame) );
break;
case JackTransportRolling:
if ( m_transport.m_status != TransportInfo::ROLLING && ( m_JackTransportPos.valid & JackPositionBBT ) ) {
must_relocate = 2;
//WARNINGLOG( "Jack transport starting: Resyncing in 2 x Buffersize!!" );
}
m_transport.m_status = TransportInfo::ROLLING;
//infoLog( "[updateTransportInfo] ROLLING - frames: " + to_string(m_transportPos.frame) );
break;
case JackTransportStarting:
m_transport.m_status = TransportInfo::STOPPED;
//infoLog( "[updateTransportInfo] STARTING (stopped) - frames: " + to_string(m_transportPos.frame) );
break;
default:
ERRORLOG( "Unknown jack transport state" );
}
// FIXME
// TickSize and BPM
Hydrogen * H = Hydrogen::get_instance();
H->setTimelineBpm(); // dlr: fix #168, jack may have re-located us anywhere, check for bpm change every cycle
if ( m_JackTransportPos.valid & JackPositionBBT ) {
float bpm = ( float )m_JackTransportPos.beats_per_minute;
if ( m_transport.m_nBPM != bpm ) {
if ( Preferences::get_instance()->m_bJackMasterMode == Preferences::NO_JACK_TIME_MASTER ){
// WARNINGLOG( QString( "Tempo change from jack-transport: %1" ).arg( bpm ) );
m_transport.m_nBPM = bpm;
must_relocate = 1; // The tempo change has happened somewhere during the previous cycle; relocate right away.
// This commenting out is rude perhaps, but I cant't figure out what this bit is doing.
// In any case, setting must_relocate = 1 here causes too many relocates. Jakob Lund
/* } else {
if ( m_transport.m_status == TransportInfo::STOPPED ) {
oldpo = H->getPatternPos();
must_relocate = 1;
//changer =1;
}*/
}
// Hydrogen::get_instance()->setBPM( m_JackTransportPos.beats_per_minute ); // unnecessary, as Song->m_BPM gets updated in audioEngine_process_transport (after calling this function)
}
}
if ( m_transport.m_nFrames + bbt_frame_offset != m_JackTransportPos.frame ) {
if ( ( m_JackTransportPos.valid & JackPositionBBT ) && must_relocate == 0 ) {
WARNINGLOG( "Frame offset mismatch; triggering resync in 2 cycles" );
must_relocate = 2;
} else {
if ( Preferences::get_instance()->m_bJackMasterMode == Preferences::NO_JACK_TIME_MASTER ) {
// If There's no timebase_master, and audioEngine_process_checkBPMChanged handled a tempo change during last cycle, the offset doesn't match, but hopefully it was calculated correctly:
//this perform Jakobs mod in pattern mode, but both m_transport.m_nFrames works with the same result in pattern Mode
// in songmode the first case dont work.
//so we can remove this "if query" and only use this old mod: m_transport.m_nFrames = H->getHumantimeFrames();
//because to get the songmode we have to add this "H2Core::Hydrogen *m_pEngine" to the header file
//if we remove this we also can remove *m_pEngine from header
#if 0 // dlr: fix #169, why do we have a different behaviour for SONG_MODE?
if ( m_pEngine->getSong()->get_mode() == Song::PATTERN_MODE ){
m_transport.m_nFrames = m_JackTransportPos.frame/* - bbt_frame_offset*/; ///see comment in svn changeset 753
}
else
{
m_transport.m_nFrames = H->getHumantimeFrames();
}
#else
m_transport.m_nFrames = m_JackTransportPos.frame;
bbt_frame_offset = 0; // dlr: stop re-syncing in every cycle when STOPPED
#endif
// In jack 'slave' mode, if there's no master, the following line is needed to be able to relocate by clicking the song ruler (wierd corner case, but still...)
if ( m_transport.m_status == TransportInfo::ROLLING )
H->triggerRelocateDuringPlay();
} else {
///this is experimantal... but it works for the moment... fix me fix :-) wolke
// ... will this actually happen? keeping it for now ( jakob lund )
m_transport.m_nFrames = H->getHumantimeFrames();
}
}
}
// humantime fix
if ( H->getHumantimeFrames() != m_JackTransportPos.frame ) {
H->setHumantimeFrames(m_JackTransportPos.frame);
//WARNINGLOG("fix Humantime " + to_string (m_JackTransportPos.frame));
}
if ( must_relocate == 1 ) {
//WARNINGLOG( "Resyncing!" );
relocateBBT();
if ( m_transport.m_status == TransportInfo::ROLLING ) {
H->triggerRelocateDuringPlay();
}
}
if ( must_relocate > 0 ) must_relocate--;
}
/**
* The handleAction method is the heard of the MidiActionManager class.
* It executes the operations that are needed to carry the desired action.
*/
bool MidiActionManager::handleAction( MidiAction * pAction ){
Hydrogen *pEngine = Hydrogen::get_instance();
/*
return false if action is null
(for example if no Action exists for an event)
*/
if( pAction == NULL ) return false;
QString sActionString = pAction->getType();
if( sActionString == "PLAY" )
{
int nState = pEngine->getState();
if ( nState == STATE_READY ){
pEngine->sequencer_play();
}
return true;
}
if( sActionString == "PLAY/STOP_TOGGLE" || sActionString == "PLAY/PAUSE_TOGGLE" )
{
int nState = pEngine->getState();
switch ( nState )
{
case STATE_READY:
pEngine->sequencer_play();
break;
case STATE_PLAYING:
if( sActionString == "PLAY/STOP_TOGGLE" ) pEngine->setPatternPos( 0 );
pEngine->sequencer_stop();
pEngine->setTimelineBpm();
break;
default:
ERRORLOG( "[Hydrogen::ActionManager(PLAY): Unhandled case" );
}
return true;
}
if( sActionString == "PAUSE" )
{
pEngine->sequencer_stop();
return true;
}
if( sActionString == "STOP" )
{
pEngine->sequencer_stop();
pEngine->setPatternPos( 0 );
pEngine->setTimelineBpm();
return true;
}
if( sActionString == "MUTE" ){
//mutes the master, not a single strip
pEngine->getSong()->__is_muted = true;
return true;
}
if( sActionString == "UNMUTE" ){
pEngine->getSong()->__is_muted = false;
return true;
}
if( sActionString == "MUTE_TOGGLE" ){
pEngine->getSong()->__is_muted = !Hydrogen::get_instance()->getSong()->__is_muted;
return true;
}
if( sActionString == "BEATCOUNTER" ){
pEngine->handleBeatCounter();
return true;
}
if( sActionString == "TAP_TEMPO" ){
pEngine->onTapTempoAccelEvent();
return true;
}
if( sActionString == "SELECT_NEXT_PATTERN" ){
bool ok;
int row = pAction->getParameter1().toInt(&ok,10);
if( row> pEngine->getSong()->get_pattern_list()->size() -1 )
return false;
if(Preferences::get_instance()->patternModePlaysSelected())
pEngine->setSelectedPatternNumber( row );
else
pEngine->sequencer_setNextPattern( row, false, true );
return true;
}
if( sActionString == "SELECT_NEXT_PATTERN_RELATIVE" ){
bool ok;
if(!Preferences::get_instance()->patternModePlaysSelected())
{
return true;
}
int row = pEngine->getSelectedPatternNumber() + pAction->getParameter1().toInt(&ok,10);
if( row> pEngine->getSong()->get_pattern_list()->size() -1 )
{
return false;
}
pEngine->setSelectedPatternNumber( row );
return true;
}
if( sActionString == "SELECT_PREV_PATTERN_RELATIVE" ){
bool ok;
if(!Preferences::get_instance()->patternModePlaysSelected())
return true;
int row = pEngine->getSelectedPatternNumber() - pAction->getParameter1().toInt(&ok,10);
if( row < 0 )
return false;
pEngine->setSelectedPatternNumber( row );
return true;
}
if( sActionString == "SELECT_NEXT_PATTERN_CC_ABSOLUT" ){
bool ok;
int row = pAction->getParameter2().toInt(&ok,10);
if( row> pEngine->getSong()->get_pattern_list()->size() -1 )
return false;
if(Preferences::get_instance()->patternModePlaysSelected())
pEngine->setSelectedPatternNumber( row );
else
return true;// only usefully in normal pattern mode
return true;
}
if( sActionString == "SELECT_NEXT_PATTERN_PROMPTLY" ){// obsolete, use SELECT_NEXT_PATTERN_CC_ABSOLUT instead
bool ok;
int row = pAction->getParameter2().toInt(&ok,10);
pEngine->setSelectedPatternNumberWithoutGuiEvent( row );
return true;
}
if( sActionString == "SELECT_AND_PLAY_PATTERN"){
bool ok;
int row = pAction->getParameter1().toInt(&ok,10);
pEngine->setSelectedPatternNumber( row );
pEngine->sequencer_setNextPattern( row, false, true );
int nState = pEngine->getState();
if ( nState == STATE_READY ){
pEngine->sequencer_play();
}
return true;
}
if( sActionString == "SELECT_INSTRUMENT" ){
bool ok;
int instrument_number = pAction->getParameter2().toInt(&ok,10) ;
if ( pEngine->getSong()->get_instrument_list()->size() < instrument_number )
instrument_number = pEngine->getSong()->get_instrument_list()->size() -1;
pEngine->setSelectedInstrumentNumber( instrument_number );
return true;
}
if( sActionString == "EFFECT1_LEVEL_ABSOLUTE" ){
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int fx_param = pAction->getParameter2().toInt(&ok,10);
setAbsoluteFXLevel( nLine, 0 , fx_param );
}
if( sActionString == "EFFECT2_LEVEL_ABSOLUTE" ){
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int fx_param = pAction->getParameter2().toInt(&ok,10);
setAbsoluteFXLevel( nLine, 1 , fx_param );
}
if( sActionString == "EFFECT3_LEVEL_ABSOLUTE" ){
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int fx_param = pAction->getParameter2().toInt(&ok,10);
setAbsoluteFXLevel( nLine, 2 , fx_param );
}
if( sActionString == "EFFECT4_LEVEL_ABSOLUTE" ){
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int fx_param = pAction->getParameter2().toInt(&ok,10);
setAbsoluteFXLevel( nLine, 3 , fx_param );
}
if( sActionString == "MASTER_VOLUME_RELATIVE" ){
//increments/decrements the volume of the whole song
bool ok;
int vol_param = pAction->getParameter2().toInt(&ok,10);
Hydrogen *engine = Hydrogen::get_instance();
Song *song = engine->getSong();
if( vol_param != 0 ){
if ( vol_param == 1 && song->get_volume() < 1.5 ){
song->set_volume( song->get_volume() + 0.05 );
} else {
if( song->get_volume() >= 0.0 ){
song->set_volume( song->get_volume() - 0.05 );
}
}
} else {
song->set_volume( 0 );
}
}
if( sActionString == "MASTER_VOLUME_ABSOLUTE" ){
//sets the volume of a master output to a given level (percentage)
bool ok;
int vol_param = pAction->getParameter2().toInt(&ok,10);
Hydrogen *engine = Hydrogen::get_instance();
Song *song = engine->getSong();
if( vol_param != 0 ){
song->set_volume( 1.5* ( (float) (vol_param / 127.0 ) ));
} else {
song->set_volume( 0 );
}
}
if( sActionString == "STRIP_VOLUME_RELATIVE" ){
//increments/decrements the volume of one mixer strip
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int vol_param = pAction->getParameter2().toInt(&ok,10);
Hydrogen::get_instance()->setSelectedInstrumentNumber( nLine );
Hydrogen *engine = Hydrogen::get_instance();
Song *song = engine->getSong();
InstrumentList *instrList = song->get_instrument_list();
Instrument *instr = instrList->get( nLine );
if ( instr == NULL) return 0;
if( vol_param != 0 ){
if ( vol_param == 1 && instr->get_volume() < 1.5 ){
instr->set_volume( instr->get_volume() + 0.1 );
} else {
if( instr->get_volume() >= 0.0 ){
instr->set_volume( instr->get_volume() - 0.1 );
}
}
} else {
instr->set_volume( 0 );
}
Hydrogen::get_instance()->setSelectedInstrumentNumber(nLine);
}
if( sActionString == "STRIP_VOLUME_ABSOLUTE" ){
//sets the volume of a mixer strip to a given level (percentage)
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int vol_param = pAction->getParameter2().toInt(&ok,10);
Hydrogen::get_instance()->setSelectedInstrumentNumber( nLine );
Hydrogen *engine = Hydrogen::get_instance();
Song *song = engine->getSong();
InstrumentList *instrList = song->get_instrument_list();
Instrument *instr = instrList->get( nLine );
if ( instr == NULL) return 0;
if( vol_param != 0 ){
instr->set_volume( 1.5* ( (float) (vol_param / 127.0 ) ));
} else {
instr->set_volume( 0 );
}
Hydrogen::get_instance()->setSelectedInstrumentNumber(nLine);
}
if( sActionString == "PAN_ABSOLUTE" ){
// sets the absolute panning of a given mixer channel
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int pan_param = pAction->getParameter2().toInt(&ok,10);
float pan_L;
float pan_R;
Hydrogen *engine = Hydrogen::get_instance();
engine->setSelectedInstrumentNumber( nLine );
Song *song = engine->getSong();
InstrumentList *instrList = song->get_instrument_list();
Instrument *instr = instrList->get( nLine );
if( instr == NULL )
return false;
pan_L = instr->get_pan_l();
pan_R = instr->get_pan_r();
// pan
float fPanValue = 0.0;
if (pan_R == 1.0) {
fPanValue = 1.0 - (pan_L / 2.0);
}
else {
fPanValue = pan_R / 2.0;
}
fPanValue = 1 * ( ((float) pan_param) / 127.0 );
if (fPanValue >= 0.5) {
pan_L = (1.0 - fPanValue) * 2;
pan_R = 1.0;
}
else {
pan_L = 1.0;
pan_R = fPanValue * 2;
}
instr->set_pan_l( pan_L );
instr->set_pan_r( pan_R );
Hydrogen::get_instance()->setSelectedInstrumentNumber(nLine);
return true;
}
if( sActionString == "PAN_RELATIVE" ){
// changes the panning of a given mixer channel
// this is useful if the panning is set by a rotary control knob
bool ok;
int nLine = pAction->getParameter1().toInt(&ok,10);
int pan_param = pAction->getParameter2().toInt(&ok,10);
float pan_L;
float pan_R;
Hydrogen *engine = Hydrogen::get_instance();
engine->setSelectedInstrumentNumber( nLine );
Song *song = engine->getSong();
InstrumentList *instrList = song->get_instrument_list();
Instrument *instr = instrList->get( nLine );
if( instr == NULL )
return false;
pan_L = instr->get_pan_l();
pan_R = instr->get_pan_r();
// pan
float fPanValue = 0.0;
if (pan_R == 1.0) {
fPanValue = 1.0 - (pan_L / 2.0);
}
else {
fPanValue = pan_R / 2.0;
}
if( pan_param == 1 && fPanValue < 1 ){
fPanValue += 0.05;
}
if( pan_param != 1 && fPanValue > 0 ){
fPanValue -= 0.05;
}
if (fPanValue >= 0.5) {
pan_L = (1.0 - fPanValue) * 2;
pan_R = 1.0;
}
else {
pan_L = 1.0;
pan_R = fPanValue * 2;
}
instr->set_pan_l( pan_L );
instr->set_pan_r( pan_R );
Hydrogen::get_instance()->setSelectedInstrumentNumber(nLine);
return true;
}
if( sActionString == "BPM_CC_RELATIVE" ){
/*
* increments/decrements the BPM
* this is useful if the bpm is set by a rotary control knob
*/
AudioEngine::get_instance()->lock( RIGHT_HERE );
int mult = 1;
//second parameter of cc command
//this value should be 1 to decrement and something other then 1 to increment the bpm
int cc_param = 1;
//this Action should be triggered only by CC commands
bool ok;
mult = pAction->getParameter1().toInt(&ok,10);
cc_param = pAction->getParameter2().toInt(&ok,10);
if( lastBpmChangeCCParameter == -1)
{
lastBpmChangeCCParameter = cc_param;
}
Song* pSong = pEngine->getSong();
if ( lastBpmChangeCCParameter >= cc_param && pSong->__bpm < 300) {
pEngine->setBPM( pSong->__bpm - 1*mult );
}
if ( lastBpmChangeCCParameter < cc_param && pSong->__bpm > 40 ) {
pEngine->setBPM( pSong->__bpm + 1*mult );
}
lastBpmChangeCCParameter = cc_param;
AudioEngine::get_instance()->unlock();
return true;
}
if( sActionString == "BPM_FINE_CC_RELATIVE" ){
/*
* increments/decrements the BPM
* this is useful if the bpm is set by a rotary control knob
*/
AudioEngine::get_instance()->lock( RIGHT_HERE );
int mult = 1;
//second parameter of cc command
//this value should be 1 to decrement and something other then 1 to increment the bpm
int cc_param = 1;
//this Action should be triggered only by CC commands
bool ok;
mult = pAction->getParameter1().toInt(&ok,10);
cc_param = pAction->getParameter2().toInt(&ok,10);
if( lastBpmChangeCCParameter == -1)
{
lastBpmChangeCCParameter = cc_param;
}
Song* pSong = pEngine->getSong();
if ( lastBpmChangeCCParameter >= cc_param && pSong->__bpm < 300) {
pEngine->setBPM( pSong->__bpm - 0.01*mult );
}
if ( lastBpmChangeCCParameter < cc_param && pSong->__bpm > 40 ) {
pEngine->setBPM( pSong->__bpm + 0.01*mult );
}
lastBpmChangeCCParameter = cc_param;
AudioEngine::get_instance()->unlock();
return true;
}
if( sActionString == "BPM_INCR" ){
AudioEngine::get_instance()->lock( RIGHT_HERE );
int mult = 1;
bool ok;
mult = pAction->getParameter1().toInt(&ok,10);
Song* pSong = pEngine->getSong();
if (pSong->__bpm < 300) {
pEngine->setBPM( pSong->__bpm + 1*mult );
}
AudioEngine::get_instance()->unlock();
return true;
}
if( sActionString == "BPM_DECR" ){
AudioEngine::get_instance()->lock( RIGHT_HERE );
int mult = 1;
bool ok;
mult = pAction->getParameter1().toInt(&ok,10);
Song* pSong = pEngine->getSong();
if (pSong->__bpm > 40 ) {
pEngine->setBPM( pSong->__bpm - 1*mult );
}
AudioEngine::get_instance()->unlock();
return true;
}
if( sActionString == ">>_NEXT_BAR"){
pEngine->setPatternPos(pEngine->getPatternPos() +1 );
pEngine->setTimelineBpm();
return true;
}
if( sActionString == "<<_PREVIOUS_BAR"){
pEngine->setPatternPos(pEngine->getPatternPos() -1 );
pEngine->setTimelineBpm();
return true;
}
if( sActionString == "PLAYLIST_SONG"){
bool ok;
int songnumber = pAction->getParameter2().toInt(&ok,10);
return setSong( songnumber );
}
if( sActionString == "PLAYLIST_NEXT_SONG"){
int songnumber = Playlist::get_instance()->getActiveSongNumber();
return setSong( ++songnumber );
}
if( sActionString == "PLAYLIST_PREV_SONG"){
int songnumber = Playlist::get_instance()->getActiveSongNumber();
return setSong( --songnumber );
}
if( sActionString == "RECORD_READY"){
if ( pEngine->getState() != STATE_PLAYING ) {
if (!Preferences::get_instance()->getRecordEvents()) {
Preferences::get_instance()->setRecordEvents(true);
}
else {
Preferences::get_instance()->setRecordEvents(false);
}
}
return true;
}
if( sActionString == "RECORD/STROBE_TOGGLE"){
if (!Preferences::get_instance()->getRecordEvents()) {
Preferences::get_instance()->setRecordEvents(true);
}
else {
Preferences::get_instance()->setRecordEvents(false);
}
return true;
}
if( sActionString == "RECORD_STROBE"){
if (!Preferences::get_instance()->getRecordEvents()) {
Preferences::get_instance()->setRecordEvents(true);
}
return true;
}
if( sActionString == "RECORD_EXIT"){
if (Preferences::get_instance()->getRecordEvents()) {
Preferences::get_instance()->setRecordEvents(false);
}
return true;
}
if( sActionString == "TOGGLE_METRONOME"){
Preferences::get_instance()->m_bUseMetronome = !Preferences::get_instance()->m_bUseMetronome;
return true;
}
if( sActionString == "UNDO_ACTION"){
EventQueue::get_instance()->push_event( EVENT_UNDO_REDO, 0);// 0 = undo
return true;
}
if( sActionString == "REDO_ACTION"){
EventQueue::get_instance()->push_event( EVENT_UNDO_REDO, 1);// 1 = redo
return true;
}
return false;
}
void JackAudioDriver::updateTransportInfo()
{
// The following four lines do only cover the special case of
// audioEngine_updateNoteQueue() returning -1 in
// audioEngine_process() and triggering an addition relocation
// of the transport position to the beginning of the song
// using locateInNCycles() to possibly keep synchronization
// with Ardour.
if ( locate_countdown == 1 )
locate( locate_frame );
if ( locate_countdown > 0 )
locate_countdown--;
if ( Preferences::get_instance()->m_bJackTransportMode !=
Preferences::USE_JACK_TRANSPORT ){
return;
}
// jack_transport_query() (jack/transport.h) queries the
// current transport state and position. If called from the
// process thread, the second argument, which is a pointer to
// a structure for returning current transport, corresponds to
// the first frame of the current cycle and the state returned
// is valid for the entire cycle. #m_JackTransportPos->valid
// will show which fields contain valid data. If
// #m_JackTransportPos is NULL, do not return position
// information.
m_JackTransportState = jack_transport_query( m_pClient, &m_JackTransportPos );
// WARNINGLOG( QString( "[Jack-Query] state: %1, frame: %2, position bit: %3, bpm: %4" )
// .arg( m_JackTransportState )
// .arg( m_JackTransportPos.frame )
// .arg( m_JackTransportPos.valid )
// .arg( m_JackTransportPos.beats_per_minute ) );
// Update the TransportInfo in m_transport based on the state
// returned by jack_transport_query.
switch ( m_JackTransportState ) {
case JackTransportStopped: // Transport is halted
m_transport.m_status = TransportInfo::STOPPED;
//INFOLOG( "[updateTransportInfo] STOPPED - frames: " + to_string(m_transportPos.frame) );
break;
case JackTransportRolling: // Transport is playing
// If the valid member matches the JackPositionBBT
// bits, there is a JACK timebase master present
// supplying bar, beat, and tick information along
// with the plain transport position in frames. We
// will use it for re-positioning. But only at the end
// of the next cycle, because this timebase master has
// to properly initialize its state during this cycle
// too.
if ( m_transport.m_status != TransportInfo::ROLLING &&
( m_JackTransportPos.valid & JackPositionBBT ) ) {
must_relocate = 2;
//WARNINGLOG( "Jack transport starting: Resyncing in 2 x Buffersize!!" );
}
m_transport.m_status = TransportInfo::ROLLING;
//INFOLOG( "[updateTransportInfo] ROLLING - frames: " + to_string(m_transportPos.frame) );
break;
case JackTransportStarting: // Waiting for sync ready. If
// there are slow-sync clients,
// this can take more than one
// cycle.
m_transport.m_status = TransportInfo::STOPPED;
//INFOLOG( "[updateTransportInfo] STARTING (stopped) - frames: " + to_string(m_transportPos.frame) );
break;
default:
ERRORLOG( "Unknown jack transport state" );
}
// Updating TickSize and BPM
Hydrogen * H = Hydrogen::get_instance();
// JACK may have re-located us anywhere. Therefore, we have to
// check for a bpm change every cycle. We will do so by
// updating both the global speed of the song, as well as the
// fallback speed (H->getNewBpmJTM) with the local tempo at
// the current position on the timeline.
H->setTimelineBpm();
// Check whether another JACK master is present (the second if
// clause won't evaluate to true if Hydrogen itself is the
// timebase master) and whether it changed the transport
// state. Note that only the JACK timebase master and not
// arbitrary clients can do this. If so, the speed is updated
// an a relocation according to the bar, beat, and tick
// information will be triggered right away.
if ( m_JackTransportPos.valid & JackPositionBBT ) {
float bpm = ( float )m_JackTransportPos.beats_per_minute;
if ( m_transport.m_nBPM != bpm ) {
if ( Preferences::get_instance()->m_bJackMasterMode ==
Preferences::NO_JACK_TIME_MASTER ){
// WARNINGLOG( QString( "Tempo change from jack-transport: %1" ).arg( bpm ) );
m_transport.m_nBPM = bpm;
must_relocate = 1;
}
}
}
// This clause detects a re-location, which was either
// triggered by an user-interaction (e.g. clicking the forward
// button or clicking somewhere on the timeline) or by a
// different JACK client.
if ( m_transport.m_nFrames + bbt_frame_offset != m_JackTransportPos.frame ) {
// Whether there is a JACK timebase master registered
// but the audio engine was neither (re)started nor a
// change in the speed was found beforehand.
if ( ( m_JackTransportPos.valid & JackPositionBBT ) && must_relocate == 0 ) {
// WARNINGLOG( "Frame offset mismatch; triggering resync in 2 cycles" );
must_relocate = 2; // re-locate at the end of
// the next cycle.
} else {
if ( Preferences::get_instance()->m_bJackMasterMode ==
Preferences::NO_JACK_TIME_MASTER ) {
// Just consider the transport
// position as dirty, reassign the
// one obtained in the query, and
// reset the offset.
m_transport.m_nFrames = m_JackTransportPos.frame;
bbt_frame_offset = 0;
// If not registered as JACK time
// master, the following line is
// needed to be able to relocate by
// clicking the song ruler (wired
// corner case, but still...)
if ( m_transport.m_status == TransportInfo::ROLLING )
// Setting
// H->m_nPatternStartTick = -1
// if in pattern mode.
H->triggerRelocateDuringPlay();
} else {
// Fallback to the transport position
// of the last cycle.
m_transport.m_nFrames = H->getHumantimeFrames();
}
}
}
// Only used if Hydrogen is in JACK timebase master
// mode. Updated every cycle.
if ( H->getHumantimeFrames() != m_JackTransportPos.frame ) {
H->setHumantimeFrames(m_JackTransportPos.frame);
// WARNINGLOG( QString( "fix Humantime: %1" ).arg( m_JackTransportPos.frame ) );
}
// Trigger the re-location based on the information provided
// by another JACK timebase master.
if ( must_relocate == 1 ) {
WARNINGLOG( QString( "Resyncing! bbt_frame_offset: %1" ).arg( bbt_frame_offset ) );
relocateBBT();
if ( m_transport.m_status == TransportInfo::ROLLING ) {
// Setting H->m_nPatternStartTick = -1 if in
// pattern mode
H->triggerRelocateDuringPlay();
}
}
if ( must_relocate > 0 ) must_relocate--;
}
