diff options
Diffstat (limited to 'muse2/muse/functions.cpp')
-rw-r--r-- | muse2/muse/functions.cpp | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/muse2/muse/functions.cpp b/muse2/muse/functions.cpp new file mode 100644 index 00000000..980a5103 --- /dev/null +++ b/muse2/muse/functions.cpp @@ -0,0 +1,237 @@ +//========================================================= +// MusE +// Linux Music Editor +// $Id: functions.cpp,v 1.20.2.19 2011/05/05 20:10 flo93 Exp $ +// (C) Copyright 2011 Florian Jung (flo93@sourceforge.net) +//========================================================= + +#include "functions.h" +#include "song.h" + +#include "event.h" +#include "audio.h" +#include "gconfig.h" + +#include <iostream> + +using namespace std; + +GateTime* gatetime_dialog=NULL; +Velocity* velocity_dialog=NULL; +Quantize* quantize_dialog=NULL; + +void init_function_dialogs(QWidget* parent) +{ + gatetime_dialog = new GateTime(parent); + velocity_dialog = new Velocity(parent); + quantize_dialog = new Quantize(parent); +} + +set<Part*> partlist_to_set(PartList* pl) +{ + set<Part*> result; + + for (PartList::iterator it=pl->begin(); it!=pl->end(); it++) + result.insert(it->second); + + return result; +} + +bool is_relevant(const Event& event, const Part* part, int range) +{ + unsigned tick; + + if (event.type()!=Note) return false; + + switch (range) + { + case 0: return true; + case 1: return event.selected(); + case 2: tick=event.tick()+part->tick(); return (tick >= song->lpos()) && (tick < song->rpos()); + case 3: return is_relevant(event,part,1) && is_relevant(event,part,2); + default: cout << "ERROR: ILLEGAL FUNCTION CALL in is_relevant: range is illegal: "<<range<<endl; + return false; + } +} + +bool modify_notelen(const set<Part*>& parts) +{ + if (!gatetime_dialog->exec()) + return false; + + modify_notelen(parts,gatetime_dialog->range,gatetime_dialog->rateVal,gatetime_dialog->offsetVal); + + return true; +} + +bool modify_velocity(const set<Part*>& parts) +{ + if (!velocity_dialog->exec()) + return false; + + modify_velocity(parts,velocity_dialog->range,velocity_dialog->rateVal,velocity_dialog->offsetVal); + + return true; +} + +bool quantize_notes(const set<Part*>& parts) +{ + if (!quantize_dialog->exec()) + return false; + + quantize_notes(parts, quantize_dialog->range, (config.division*4)/(1<<quantize_dialog->raster_power2), + quantize_dialog->strength, quantize_dialog->swing, quantize_dialog->threshold); + + return true; +} + + + +void modify_velocity(const set<Part*>& parts, int range, int rate, int offset) +{ + map<Event*, Part*> events; + + for (set<Part*>::iterator part=parts.begin(); part!=parts.end(); part++) + for (iEvent event=(*part)->events()->begin(); event!=(*part)->events()->end(); event++) + if (is_relevant(event->second, *part, range)) + events.insert(pair<Event*, Part*>(&event->second, *part)); + + + song->startUndo(); + + for (map<Event*, Part*>::iterator it=events.begin(); it!=events.end(); it++) + { + Event& event=*(it->first); + Part* part=it->second; + + int velo = event.velo(); + + velo = (velo * rate) / 100; + velo += offset; + + if (velo <= 0) + velo = 1; + else if (velo > 127) + velo = 127; + + if (event.velo() != velo) + { + Event newEvent = event.clone(); + newEvent.setVelo(velo); + // Indicate no undo, and do not do port controller values and clone parts. + audio->msgChangeEvent(event, newEvent, part, false, false, false); + } + } + + song->endUndo(SC_EVENT_MODIFIED); +} + +void modify_notelen(const set<Part*>& parts, int range, int rate, int offset) +{ + map<Event*, Part*> events; + + for (set<Part*>::iterator part=parts.begin(); part!=parts.end(); part++) + for (iEvent event=(*part)->events()->begin(); event!=(*part)->events()->end(); event++) + if (is_relevant(event->second, *part, range)) + events.insert(pair<Event*, Part*>(&event->second, *part)); + + + song->startUndo(); + + for (map<Event*, Part*>::iterator it=events.begin(); it!=events.end(); it++) + { + Event& event=*(it->first); + Part* part=it->second; + + unsigned int len = event.lenTick(); //prevent compiler warning: comparison singed/unsigned + + len = (len * rate) / 100; + len += offset; + + if (len <= 0) + len = 1; + + if (event.lenTick() != len) + { + Event newEvent = event.clone(); + newEvent.setLenTick(len); + // Indicate no undo, and do not do port controller values and clone parts. + audio->msgChangeEvent(event, newEvent, part, false, false, false); + } + } + + song->endUndo(SC_EVENT_MODIFIED); +} + +unsigned quantize_tick(unsigned tick, unsigned raster, int swing) +{ + //find out the nearest tick and the distance to it: + //this is so complicated because this function supports + //swing: if swing is 50, the resulting rhythm is not + //"daa daa daa daa" but "daaaa da daaaa da"... + int tick_dest1 = AL::sigmap.raster1(tick, raster*2); //round down + int tick_dest2 = tick_dest1 + raster + raster*swing/100; + int tick_dest3 = tick_dest1 + raster*2; + + int tick_diff1 = tick_dest1 - tick; + int tick_diff2 = tick_dest2 - tick; + int tick_diff3 = tick_dest3 - tick; + + if ((abs(tick_diff1) <= abs(tick_diff2)) && (abs(tick_diff1) <= abs(tick_diff3))) //tick_dest1 is the nearest tick + return tick_dest1; + else if ((abs(tick_diff2) <= abs(tick_diff1)) && (abs(tick_diff2) <= abs(tick_diff3))) //tick_dest2 is the nearest tick + return tick_dest2; + else + return tick_dest3; +} + +void quantize_notes(const set<Part*>& parts, int range, int raster, int strength, int swing, int threshold) +{ + map<Event*, Part*> events; + + for (set<Part*>::iterator part=parts.begin(); part!=parts.end(); part++) + for (iEvent event=(*part)->events()->begin(); event!=(*part)->events()->end(); event++) + if (is_relevant(event->second, *part, range)) + events.insert(pair<Event*, Part*>(&event->second, *part)); + + + song->startUndo(); + + for (map<Event*, Part*>::iterator it=events.begin(); it!=events.end(); it++) + { + Event& event=*(it->first); + Part* part=it->second; + + unsigned begin_tick = event.tick() + part->tick(); + int begin_diff = quantize_tick(begin_tick, raster, swing) - begin_tick; + + if (abs(begin_diff) > threshold) + begin_tick = begin_tick + begin_diff*strength/100; + + + unsigned len=event.lenTick(); + + unsigned end_tick = begin_tick + len; + int len_diff = quantize_tick(end_tick, raster, swing) - end_tick; + + if (abs(len_diff) > threshold) + len = len + len_diff*strength/100; + + if (len <= 0) + len = 1; + + + if ( (event.lenTick() != len) || (event.tick() + part->tick() != begin_tick) ) + { + Event newEvent = event.clone(); + newEvent.setTick(begin_tick - part->tick()); + newEvent.setLenTick(len); + // Indicate no undo, and do not do port controller values and clone parts. + audio->msgChangeEvent(event, newEvent, part, false, false, false); + } + } + + song->endUndo(SC_EVENT_MODIFIED); +} + + |