diff options
Diffstat (limited to 'muse_qt4_evolution/al/tempo.cpp')
| -rw-r--r-- | muse_qt4_evolution/al/tempo.cpp | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/muse_qt4_evolution/al/tempo.cpp b/muse_qt4_evolution/al/tempo.cpp new file mode 100644 index 00000000..7d65c732 --- /dev/null +++ b/muse_qt4_evolution/al/tempo.cpp @@ -0,0 +1,393 @@ +//============================================================================= +// 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 "tempo.h" +#include "xml.h" + +namespace AL { + +TempoList tempomap; + +//--------------------------------------------------------- +// TempoList +//--------------------------------------------------------- + +TempoList::TempoList() + { + _tempo = 500000; + insert(std::pair<const unsigned, TEvent*> (MAX_TICK+1, new TEvent(_tempo, 0))); + _tempoSN = 1; + _globalTempo = 100; + useList = true; + } + +//--------------------------------------------------------- +// add +//--------------------------------------------------------- + +void TempoList::add(unsigned tick, int tempo) + { + if (tick > MAX_TICK) + tick = MAX_TICK; + + iTEvent e = upper_bound(tick); + + if (tick == e->second->tick) + e->second->tempo = tempo; + else { + TEvent* ne = e->second; + TEvent* ev = new TEvent(ne->tempo, ne->tick); + ne->tempo = tempo; + ne->tick = tick; + insert(std::pair<const unsigned, TEvent*> (tick, ev)); + } + normalize(); + } + +//--------------------------------------------------------- +// TempoList::normalize +//--------------------------------------------------------- + +void TempoList::normalize() + { + int frame = 0; + for (iTEvent e = begin(); e != end(); ++e) { + e->second->frame = frame; + unsigned dtick = e->first - e->second->tick; + double dtime = double(dtick) / (division * _globalTempo * 10000.0/e->second->tempo); + frame += lrint(dtime * sampleRate); + } + } + +//--------------------------------------------------------- +// TempoList::dump +//--------------------------------------------------------- + +void TempoList::dump() const + { + printf("\nTempoList:\n"); + for (ciTEvent i = begin(); i != end(); ++i) { + printf("%6d %06d Tempo %6d Frame %d\n", + i->first, i->second->tick, i->second->tempo, + i->second->frame); + } + } + +//--------------------------------------------------------- +// clear +//--------------------------------------------------------- + +void TempoList::clear() + { + for (iTEvent i = begin(); i != end(); ++i) + delete i->second; + TEMPOLIST::clear(); + insert(std::pair<const unsigned, TEvent*> (MAX_TICK+1, new TEvent(500000, 0))); + ++_tempoSN; + } + +//--------------------------------------------------------- +// tempo +//--------------------------------------------------------- + +int TempoList::tempo(unsigned tick) const + { + if (useList) { + ciTEvent i = upper_bound(tick); + if (i == end()) { + printf("no TEMPO at tick %d,0x%x\n", tick, tick); + return 1000; + } + return i->second->tempo; + } + else + return _tempo; + } + +//--------------------------------------------------------- +// del +//--------------------------------------------------------- + +void TempoList::del(unsigned tick) + { +// printf("TempoList::del(%d)\n", tick); + iTEvent e = find(tick); + if (e == end()) { + printf("TempoList::del(%d): not found\n", tick); + return; + } + del(e); + ++_tempoSN; + } + +void TempoList::del(iTEvent e) + { + iTEvent ne = e; + ++ne; + if (ne == end()) { + printf("TempoList::del(): not found\n"); + return; + } + ne->second->tempo = e->second->tempo; + ne->second->tick = e->second->tick; + erase(e); + normalize(); + ++_tempoSN; + } + +//--------------------------------------------------------- +// change +//--------------------------------------------------------- + +void TempoList::change(unsigned tick, int newTempo) + { + iTEvent e = find(tick); + e->second->tempo = newTempo; + normalize(); + ++_tempoSN; + } + +//--------------------------------------------------------- +// setTempo +// called from transport window +// & slave mode tempo changes +//--------------------------------------------------------- + +void TempoList::setTempo(unsigned tick, int newTempo) + { + if (useList) + add(tick, newTempo); + else + _tempo = newTempo; + ++_tempoSN; + } + +//--------------------------------------------------------- +// setGlobalTempo +//--------------------------------------------------------- + +void TempoList::setGlobalTempo(int val) + { + _globalTempo = val; + ++_tempoSN; + normalize(); + } + +//--------------------------------------------------------- +// addTempo +//--------------------------------------------------------- + +void TempoList::addTempo(unsigned t, int tempo) + { + add(t, tempo); + ++_tempoSN; + } + +//--------------------------------------------------------- +// delTempo +//--------------------------------------------------------- + +void TempoList::delTempo(unsigned tick) + { + del(tick); + ++_tempoSN; + } + +//--------------------------------------------------------- +// changeTempo +//--------------------------------------------------------- + +void TempoList::changeTempo(unsigned tick, int newTempo) + { + change(tick, newTempo); + ++_tempoSN; + } + +//--------------------------------------------------------- +// setMasterFlag +//--------------------------------------------------------- + +bool TempoList::setMasterFlag(unsigned /*tick*/, bool val) + { + if (useList != val) { + useList = val; + ++_tempoSN; + return true; + } + return false; + } + +//--------------------------------------------------------- +// tick2frame +//--------------------------------------------------------- + +unsigned TempoList::tick2frame(unsigned tick, unsigned frame, int* sn) const + { + return (*sn == _tempoSN) ? frame : tick2frame(tick, sn); + } + +//--------------------------------------------------------- +// tick2frame +//--------------------------------------------------------- + +unsigned TempoList::tick2frame(unsigned tick, int* sn) const + { + int f; + if (useList) { + ciTEvent i = upper_bound(tick); + if (i == end()) { + printf("tick2frame(%d,0x%x): not found\n", tick, tick); + abort(); // debug + return 0; + } + unsigned dtick = tick - i->second->tick; + double dtime = double(dtick) / (division * _globalTempo * 10000.0/ i->second->tempo); + unsigned dframe = lrint(dtime * sampleRate); + f = i->second->frame + dframe; + } + else { + double t = (double(tick) * double(_tempo)) / (double(division) * _globalTempo * 10000.0); + f = lrint(t * sampleRate); + } + if (sn) + *sn = _tempoSN; + return f; + } + +//--------------------------------------------------------- +// frame2tick +// return cached value t if list did not change +//--------------------------------------------------------- + +unsigned TempoList::frame2tick(unsigned frame, unsigned t, int* sn) const + { + return (*sn == _tempoSN) ? t : frame2tick(frame, sn); + } + +//--------------------------------------------------------- +// frame2tick +//--------------------------------------------------------- + +unsigned TempoList::frame2tick(unsigned frame, int* sn) const + { + unsigned tick; + if (useList) { + ciTEvent e; + for (e = begin(); e != end();) { + ciTEvent ee = e; + ++ee; + if (ee == end()) + break; + if (frame < ee->second->frame) + break; + e = ee; + } + unsigned te = e->second->tempo; + int dframe = frame - e->second->frame; + double dtime = double(dframe) / double(sampleRate); + tick = e->second->tick + lrint(dtime * _globalTempo * division * 10000.0 / te); + } + else + tick = lrint((double(frame)/double(sampleRate)) * _globalTempo * division * 10000.0 / double(_tempo)); + if (sn) + *sn = _tempoSN; + return tick; + } + +//--------------------------------------------------------- +// TempoList::write +//--------------------------------------------------------- + +void TempoList::write(Xml& xml) const + { + xml.stag(QString("tempolist fix=\"%1\"").arg(_tempo)); + if (_globalTempo != 100) + xml.tag("globalTempo", _globalTempo); + for (ciTEvent i = begin(); i != end(); ++i) + i->second->write(xml, i->first); + xml.etag("tempolist"); + } + +//--------------------------------------------------------- +// TempoList::read +//--------------------------------------------------------- + +void TempoList::read(QDomNode node) + { + QDomElement e = node.toElement(); + _tempo = e.attribute("fix","500000").toInt(); + + node = node.firstChild(); + while (!node.isNull()) { + e = node.toElement(); + if (e.tagName() == "tempo") { + TEvent* t = new TEvent(); + unsigned tick = t->read(node); + iTEvent pos = find(tick); + if (pos != end()) + erase(pos); + insert(std::pair<const int, TEvent*> (tick, t)); + } + else if (e.tagName() == "globalTempo") + _globalTempo = e.text().toInt(); + else + printf("MusE:Tempolist: unknown tag %s\n", e.tagName().toLatin1().data()); + node = node.nextSibling(); + } + normalize(); + ++_tempoSN; + } + +//--------------------------------------------------------- +// TEvent::write +//--------------------------------------------------------- + +void TEvent::write(Xml& xml, int at) const + { + xml.stag(QString("tempo at=\"%1\"").arg(at)); + xml.tag("tick", tick); + xml.tag("val", tempo); + xml.etag("tempo"); + } + +//--------------------------------------------------------- +// TEvent::read +//--------------------------------------------------------- + +int TEvent::read(QDomNode node) + { + QDomElement e = node.toElement(); + int at = e.attribute("at","0").toInt(); + + node = node.firstChild(); + while (!node.isNull()) { + e = node.toElement(); + if (e.tagName() == "tick") + tick = e.text().toInt(); + else if (e.tagName() == "val") + tempo = e.text().toInt(); + else + printf("MusE:TEvent: unknown tag %s\n", e.tagName().toLatin1().data()); + node = node.nextSibling(); + } + return at; + } +} |