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-rw-r--r--attic/muse_qt4_evolution/al/sig.cpp407
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diff --git a/attic/muse_qt4_evolution/al/sig.cpp b/attic/muse_qt4_evolution/al/sig.cpp
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--- a/attic/muse_qt4_evolution/al/sig.cpp
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-//=============================================================================
-// AL
-// Audio Utility Library
-// $Id:$
-//
-// Copyright (C) 2002-2006 by Werner Schweer and others
-//
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License version 2.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//=============================================================================
-
-#include "al.h"
-#include "sig.h"
-#include "xml.h"
-
-namespace AL {
-
-SigList sigmap;
-
-//---------------------------------------------------------
-// SigList
-//---------------------------------------------------------
-
-SigList::SigList()
- {
- insert(std::pair<const unsigned, SigEvent*> (MAX_TICK, new SigEvent(TimeSignature(4, 4), 0)));
- }
-
-//---------------------------------------------------------
-// add
-// signatures are only allowed at the beginning of
-// a bar
-//---------------------------------------------------------
-
-void SigList::add(unsigned tick, const TimeSignature& s)
- {
- if (s.z == 0 || s.n == 0) {
- printf("illegal signature %d/%d\n", s.z, s.n);
- }
- tick = raster1(tick, 0);
- iSigEvent e = upper_bound(tick);
-
- if (tick == e->second->tick) {
- e->second->sig = s;
- }
- else {
- SigEvent* ne = e->second;
- SigEvent* ev = new SigEvent(ne->sig, ne->tick);
- ne->sig = s;
- ne->tick = tick;
- insert(std::pair<const unsigned, SigEvent*> (tick, ev));
- }
- normalize();
- }
-
-//---------------------------------------------------------
-// del
-//---------------------------------------------------------
-
-void SigList::del(unsigned tick)
- {
-// printf("SigList::del(%d)\n", tick);
- iSigEvent e = find(tick);
- if (e == end()) {
- printf("SigList::del(%d): not found\n", tick);
- return;
- }
- iSigEvent ne = e;
- ++ne;
- if (ne == end()) {
- printf("SigList::del() HALLO\n");
- return;
- }
- ne->second->sig = e->second->sig;
- ne->second->tick = e->second->tick;
- erase(e);
- normalize();
- }
-
-//---------------------------------------------------------
-// SigList::normalize
-//---------------------------------------------------------
-
-void SigList::normalize()
- {
- TimeSignature sig(0, 0);
- unsigned tick = 0;
- iSigEvent ee;
-
- for (iSigEvent e = begin(); e != end();) {
- if (sig.z == e->second->sig.z && sig.n == e->second->sig.n) {
- e->second->tick = tick;
- erase(ee);
- }
- sig = e->second->sig;
- ee = e;
- tick = e->second->tick;
- ++e;
- }
-
- int bar = 0;
- for (iSigEvent e = begin(); e != end();) {
- e->second->bar = bar;
- int delta = e->first - e->second->tick;
- int ticksB = ticks_beat(e->second->sig.n);
- int ticksM = ticksB * e->second->sig.z;
- bar += delta / ticksM;
- if (delta % ticksM) // Teil eines Taktes
- ++bar;
- ++e;
- }
- }
-
-//---------------------------------------------------------
-// SigList::dump
-//---------------------------------------------------------
-
-void SigList::dump() const
- {
- printf("\nSigList:\n");
- for (ciSigEvent i = begin(); i != end(); ++i) {
- printf("%6d %06d Bar %3d %02d/%d\n",
- i->first, i->second->tick,
- i->second->bar, i->second->sig.z, i->second->sig.n);
- }
- }
-
-void SigList::clear()
- {
- for (iSigEvent i = begin(); i != end(); ++i)
- delete i->second;
- SIGLIST::clear();
- insert(std::pair<const unsigned, SigEvent*> (MAX_TICK, new SigEvent(TimeSignature(4, 4), 0)));
- }
-
-//---------------------------------------------------------
-// ticksMeasure
-//---------------------------------------------------------
-
-int SigList::ticksMeasure(const TimeSignature& sig) const
- {
- return ticks_beat(sig.n) * sig.z;
- }
-
-int SigList::ticksMeasure(unsigned tick) const
- {
- ciSigEvent i = upper_bound(tick);
- if (i == end()) {
- printf("ticksMeasure: not found %d\n", tick);
- // abort();
- return 0;
- }
- return ticksMeasure(i->second->sig);
- }
-
-//---------------------------------------------------------
-// ticksBeat
-//---------------------------------------------------------
-
-int SigList::ticksBeat(unsigned tick) const
- {
- ciSigEvent i = upper_bound(tick);
- return ticks_beat(i->second->sig.n);
- }
-
-int SigList::ticks_beat(int n) const
- {
- int m = AL::division;
- switch (n) {
- case 1: m <<= 2; break; // 1536
- case 2: m <<= 1; break; // 768
- case 3: m += m >> 1; break; // 384+192
- case 4: break; // 384
- case 8: m >>= 1; break; // 192
- case 16: m >>= 2; break; // 96
- case 32: m >>= 3; break; // 48
- case 64: m >>= 4; break; // 24
- case 128: m >>= 5; break; // 12
- default: break;
- }
- return m;
- }
-
-//---------------------------------------------------------
-// timesig
-//---------------------------------------------------------
-
-TimeSignature SigList::timesig(unsigned tick) const
- {
- ciSigEvent i = upper_bound(tick);
- if (i == end()) {
- printf("timesig(%d): not found\n", tick);
- // abort();
- return TimeSignature(4,4);
- }
- return i->second->sig;
- }
-
-//---------------------------------------------------------
-// tickValues
-//---------------------------------------------------------
-
-void SigList::tickValues(unsigned t, int* bar, int* beat, unsigned* tick) const
- {
- ciSigEvent e = upper_bound(t);
- if (e == end()) {
- fprintf(stderr, "tickValues(0x%x) not found(%zd)\n", t, size());
-//DEBUG
-// abort();
- *bar = 0;
- *beat = 0;
- *tick = 0;
- return;
- }
-
- int delta = t - e->second->tick;
- int ticksB = ticks_beat(e->second->sig.n);
- int ticksM = ticksB * e->second->sig.z;
- *bar = e->second->bar + delta / ticksM;
- int rest = delta % ticksM;
- *beat = rest / ticksB;
- *tick = rest % ticksB;
- }
-
-//---------------------------------------------------------
-// bar2tick
-//---------------------------------------------------------
-
-unsigned SigList::bar2tick(int bar, int beat, unsigned tick) const
- {
- ciSigEvent e;
-
- if (bar < 0)
- bar = 0;
- for (e = begin(); e != end();) {
- ciSigEvent ee = e;
- ++ee;
- if (ee == end())
- break;
- if (bar < ee->second->bar)
- break;
- e = ee;
- }
- int ticksB = ticks_beat(e->second->sig.n);
- int ticksM = ticksB * e->second->sig.z;
- return e->second->tick + (bar-e->second->bar)*ticksM + ticksB*beat + tick;
- }
-
-//---------------------------------------------------------
-// raster
-//---------------------------------------------------------
-
-unsigned SigList::raster(unsigned t, int raster) const
- {
- if (raster == 1)
- return t;
- ciSigEvent e = upper_bound(t);
- if (e == end()) {
- printf("SigList::raster(%x,)\n", t);
- // abort();
- return t;
- }
- int delta = t - e->second->tick;
- int ticksM = ticks_beat(e->second->sig.n) * e->second->sig.z;
- if (raster == 0)
- raster = ticksM;
- int rest = delta % ticksM;
- int bb = (delta/ticksM)*ticksM;
- return e->second->tick + bb + ((rest + raster/2)/raster)*raster;
- }
-
-//---------------------------------------------------------
-// raster1
-// round down
-//---------------------------------------------------------
-
-unsigned SigList::raster1(unsigned t, int raster) const
- {
- if (raster == 1)
- return t;
- ciSigEvent e = upper_bound(t);
-
- int delta = t - e->second->tick;
- int ticksM = ticks_beat(e->second->sig.n) * e->second->sig.z;
- if (raster == 0)
- raster = ticksM;
- int rest = delta % ticksM;
- int bb = (delta/ticksM)*ticksM;
- return e->second->tick + bb + (rest/raster)*raster;
- }
-
-//---------------------------------------------------------
-// raster2
-// round up
-//---------------------------------------------------------
-
-unsigned SigList::raster2(unsigned t, int raster) const
- {
- if (raster == 1)
- return t;
- ciSigEvent e = upper_bound(t);
-
- int delta = t - e->second->tick;
- int ticksM = ticks_beat(e->second->sig.n) * e->second->sig.z;
- if (raster == 0)
- raster = ticksM;
- int rest = delta % ticksM;
- int bb = (delta/ticksM)*ticksM;
- return e->second->tick + bb + ((rest+raster-1)/raster)*raster;
- }
-
-//---------------------------------------------------------
-// rasterStep
-//---------------------------------------------------------
-
-int SigList::rasterStep(unsigned t, int raster) const
- {
- if (raster == 0) {
- ciSigEvent e = upper_bound(t);
- return ticks_beat(e->second->sig.n) * e->second->sig.z;
- }
- return raster;
- }
-
-//---------------------------------------------------------
-// SigList::write
-//---------------------------------------------------------
-
-void SigList::write(Xml& xml) const
- {
- xml.stag("siglist");
- for (ciSigEvent i = begin(); i != end(); ++i)
- i->second->write(xml, i->first);
- xml.etag("siglist");
- }
-
-//---------------------------------------------------------
-// SigList::read
-//---------------------------------------------------------
-
-void SigList::read(QDomNode node)
- {
- while (!node.isNull()) {
- QDomElement e = node.toElement();
- if (e.tagName() == "sig") {
- SigEvent* t = new SigEvent();
- unsigned tick = t->read(node);
- iSigEvent pos = find(tick);
- if (pos != end())
- erase(pos);
- insert(std::pair<const unsigned, SigEvent*> (tick, t));
- }
- else
- printf("MusE:SigList: unknown tag %s\n", e.tagName().toLatin1().data());
- node = node.nextSibling();
- }
- normalize();
- }
-
-//---------------------------------------------------------
-// SigEvent::write
-//---------------------------------------------------------
-
-void SigEvent::write(Xml& xml, int at) const
- {
- xml.stag(QString("sig at=\"%1\"").arg(at));
- xml.tag("tick", tick);
- xml.tag("nom", sig.z);
- xml.tag("denom", sig.n);
- xml.etag("sig");
- }
-
-//---------------------------------------------------------
-// SigEvent::read
-//---------------------------------------------------------
-
-int SigEvent::read(QDomNode node)
- {
- QDomElement e = node.toElement();
- int at = e.attribute("at", "0").toInt();
- node = node.firstChild();
-
- while (!node.isNull()) {
- QDomElement e = node.toElement();
- if (e.tagName() == "tick")
- tick = e.text().toInt();
- else if (e.tagName() == "nom")
- sig.z = e.text().toInt();
- else if (e.tagName() == "denom")
- sig.n = e.text().toInt();
- else
- printf("MusE:SigEvent: unknown tag %s\n", e.tagName().toLatin1().data());
- node = node.nextSibling();
- }
- return at;
- }
-
-}
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