diff options
Diffstat (limited to 'attic/muse_qt4_evolution/midiplugins/metronom/metronom.cpp')
-rw-r--r-- | attic/muse_qt4_evolution/midiplugins/metronom/metronom.cpp | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/attic/muse_qt4_evolution/midiplugins/metronom/metronom.cpp b/attic/muse_qt4_evolution/midiplugins/metronom/metronom.cpp new file mode 100644 index 00000000..ece1e466 --- /dev/null +++ b/attic/muse_qt4_evolution/midiplugins/metronom/metronom.cpp @@ -0,0 +1,167 @@ +//========================================================= +// MusE +// Linux Music Editor +// $Id: metronom.cpp,v 1.3 2005/11/16 17:55:59 wschweer Exp $ +// +// metronom - midi metronom +// +// (C) Copyright 2005 Werner Schweer (ws@seh.de) +//========================================================= + +#include "metronomgui.h" +#include "metronom.h" +#include "midi.h" +#include "midievent.h" + +//--------------------------------------------------------- +// Metronom +//--------------------------------------------------------- + +Metronom::Metronom(const char* name, const MempiHost* h) + : Mempi(name, h) + { + gui = 0; + } + +//--------------------------------------------------------- +// Metronom +//--------------------------------------------------------- + +Metronom::~Metronom() + { + if (gui) + delete gui; + } + +//--------------------------------------------------------- +// init +//--------------------------------------------------------- + +bool Metronom::init() + { + nextTick = 0; + lastTo = 0; + data.measureNote = 63; + data.measureVelo = 127; + data.beatNote = 63; + data.beatVelo = 70; + + gui = new MetronomGui(this, 0); + gui->hide(); + gui->setWindowTitle(QString(name())); + + return false; + } + +//--------------------------------------------------------- +// getGeometry +//--------------------------------------------------------- + +void Metronom::getGeometry(int* x, int* y, int* w, int* h) const + { + QPoint pos(gui->pos()); + QSize size(gui->size()); + *x = pos.x(); + *y = pos.y(); + *w = size.width(); + *h = size.height(); + } + +//--------------------------------------------------------- +// setGeometry +//--------------------------------------------------------- + +void Metronom::setGeometry(int x, int y, int w, int h) + { + gui->resize(QSize(w, h)); + gui->move(QPoint(x, y)); + } + +//--------------------------------------------------------- +// process +//--------------------------------------------------------- + +void Metronom::process(unsigned from, unsigned to, MidiEventList* /*il*/, MidiEventList* ol) + { + if (from == to) { + nextTick = 0; + return; + } + if (lastTo != from) { // seek? +// printf(" seek? %d-%d\n", lastTo, from); + nextTick = 0; + } + lastTo = to; + if (nextTick > to) + return; + while (nextTick < to) { + int bar, beat; + unsigned tick; + if (nextTick < from) { + host->bar(from, &bar, &beat, &tick); + if (tick) + nextTick = host->bar2tick(bar, beat+1, 0); + else + nextTick = from; + } + host->bar(nextTick, &bar, &beat, &tick); + bool isMeasure = beat == 0; + + MidiEvent ev(nextTick, 0, ME_NOTEON, data.beatNote, data.beatVelo); + if (isMeasure) { + ev.setA(data.measureNote); + ev.setB(data.measureVelo); + } + ol->insert(ev); // insert note on + ev.setB(0); + ev.setTime(nextTick + 10); + ev.setB(0); + ol->insert(ev); // insert note off + + nextTick = host->bar2tick(bar, beat+1, 0); + } + } + +//--------------------------------------------------------- +// getInitData +//--------------------------------------------------------- + +void Metronom::getInitData(int* n, const unsigned char** p) const + { + *n = sizeof(data); + *p = (unsigned char*)&data; + } + +//--------------------------------------------------------- +// setInitData +//--------------------------------------------------------- + +void Metronom::setInitData(int n, const unsigned char* p) + { + memcpy((void*)&data, p, n); + if (gui) + gui->init(); + } + +//--------------------------------------------------------- +// inst +//--------------------------------------------------------- + +static Mempi* instantiate(const char* name, const MempiHost* h) + { + return new Metronom(name, h); + } + +extern "C" { + static MEMPI descriptor = { + "Metronom", + "MusE Simple Midi Metronom", + "0.1", // version string + MEMPI_GENERATOR, + MEMPI_MAJOR_VERSION, MEMPI_MINOR_VERSION, + instantiate + }; + + const MEMPI* mempi_descriptor() { return &descriptor; } + } + |