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//=========================================================
// 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);
}
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