diff options
Diffstat (limited to 'attic/muse2-oom/muse2/muse/ticksynth.cpp')
| -rw-r--r-- | attic/muse2-oom/muse2/muse/ticksynth.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/attic/muse2-oom/muse2/muse/ticksynth.cpp b/attic/muse2-oom/muse2/muse/ticksynth.cpp new file mode 100644 index 00000000..69f3bf2d --- /dev/null +++ b/attic/muse2-oom/muse2/muse/ticksynth.cpp @@ -0,0 +1,215 @@ +//========================================================= +// MusE +// Linux Music Editor +// $Id: ticksynth.cpp,v 1.8.2.7 2009/12/20 05:00:35 terminator356 Exp $ +// (C) Copyright 2004 Werner Schweer (ws@seh.de) +//========================================================= + +#include "audio.h" +#include "ticksynth.h" +#include "default_click.h" + +#include <QMenu> + +// Added by Tim. p3.3.18 +//#define METRONOME_DEBUG + +MetronomeSynthI* metronome = 0; + +class MetronomeSynth; +static MetronomeSynth* metronomeSynth = 0; + +//--------------------------------------------------------- +// MetronomeSynth +//--------------------------------------------------------- + +class MetronomeSynth : public Synth { + public: + //MetronomeSynth(const QFileInfo& fi) : Synth(fi) {} + //MetronomeSynth(const QFileInfo& fi) : Synth(fi, QString("Metronome")) {} + MetronomeSynth(const QFileInfo& fi) : Synth(fi, QString("Metronome"), QString("Metronome"), QString(), QString()) {} + virtual ~MetronomeSynth() {} + virtual void incInstances(int) {} + virtual void* instantiate(); + + //virtual SynthIF* createSIF() const; + virtual SynthIF* createSIF(SynthI*); + }; + +//--------------------------------------------------------- +// instantiate +//--------------------------------------------------------- + +void* MetronomeSynth::instantiate() + { + return 0; + } + +//--------------------------------------------------------- +// MetronomeSynthIF +//--------------------------------------------------------- + +class MetronomeSynthIF : public SynthIF + { + const float* data; + int pos; + int len; + void process(float** buffer, int offset, int n); + + public: + //MetronomeSynthIF() { + // data = 0; + // } + MetronomeSynthIF(SynthI* s) : SynthIF(s) { + data = 0; + } + virtual bool initGui() { return true; }; + virtual void guiHeartBeat() { } + virtual bool guiVisible() const { return false; } + virtual void showGui(bool) {} + virtual bool hasGui() const { return false; } + virtual void getGeometry(int*, int*, int*, int*) const {} + virtual void setGeometry(int, int, int, int) {} + virtual void preProcessAlways() { }; + virtual iMPEvent getData(MidiPort*, MPEventList*, iMPEvent, unsigned pos, int ports, unsigned n, float** buffer); + virtual bool putEvent(const MidiPlayEvent& ev); + virtual MidiPlayEvent receiveEvent() { return MidiPlayEvent(); } + virtual int eventsPending() const { return 0; } + + //virtual bool init(Synth*) { return true; } + + virtual int channels() const { return 1; } + virtual int totalOutChannels() const { return 1; } + virtual int totalInChannels() const { return 0; } + virtual void deactivate3() {} + virtual const char* getPatchName(int, int, int, bool) const { return ""; } + virtual const char* getPatchName(int, int, MType, bool) { return ""; } + virtual void populatePatchPopup(QMenu*, int, MType, bool) {}; + virtual void write(int, Xml&) const {} + virtual float getParameter(unsigned long) const { return 0.0; } + virtual void setParameter(unsigned long, float) {} + virtual int getControllerInfo(int, const char**, int*, int*, int*, int*) { return 0; } + }; + +//--------------------------------------------------------- +// getData +//--------------------------------------------------------- + +iMPEvent MetronomeSynthIF::getData(MidiPort*, MPEventList* el, iMPEvent i, unsigned pos, int/*ports*/, unsigned n, float** buffer) + { + // Added by Tim. p3.3.18 + #ifdef METRONOME_DEBUG + printf("MusE: MetronomeSynthIF::getData\n"); + #endif + + //set type to unsigned , due to compiler warning: comparison signed/unsigned + unsigned int curPos = pos; //prevent compiler warning: comparison signed/unsigned + unsigned int endPos = pos + n; //prevent compiler warning: comparison signed/unsigned + unsigned int off = pos; //prevent compiler warning: comparison signed/unsigned + int frameOffset = audio->getFrameOffset(); + + for (; i != el->end(); ++i) { + unsigned int frame = i->time() - frameOffset; //prevent compiler warning: comparison signed /unsigned + if (frame >= endPos) + break; + if (frame > curPos) { + if (frame < pos) + printf("should not happen: missed event %d\n", pos -frame); + else + process(buffer, curPos-pos, frame - curPos); + curPos = frame; + } + putEvent(*i); + } + if (endPos - curPos) + process(buffer, curPos - off, endPos - curPos); + return el->end(); + } + +//--------------------------------------------------------- +// putEvent +//--------------------------------------------------------- + +bool MetronomeSynthIF::putEvent(const MidiPlayEvent& ev) + { + if (ev.dataA() == 0) { + data = defaultClickEmphasis; + len = defaultClickEmphasisLength; + } + else { + data = defaultClick; + len = defaultClickLength; + } + pos = 0; + return false; + } + +//--------------------------------------------------------- +// createSIF +//--------------------------------------------------------- + +//SynthIF* MetronomeSynth::createSIF() const +// { +// return new MetronomeSynthIF(); +// } +SynthIF* MetronomeSynth::createSIF(SynthI* s) + { + return new MetronomeSynthIF(s); + } + +//--------------------------------------------------------- +// process +// synthesize n samples into buffer+offset +//--------------------------------------------------------- + +void MetronomeSynthIF::process(float** buffer, int offset, int n) + { + // Added by Tim. p3.3.18 + #ifdef METRONOME_DEBUG + printf("MusE: MetronomeSynthIF::process data:%p offset:%d n:%d\n", data, offset, n); + #endif + + if (data == 0) + return; + + const float* s = data + pos; + float* d = *buffer + offset; + int l = std::min(n, len); + + for (int i = 0; i < l; ++i) + *d++ += *s++ * audioClickVolume; + pos += l; + len -= l; + if (len <= 0) + data = 0; + } + +//--------------------------------------------------------- +// initMetronome +//--------------------------------------------------------- + +void initMetronome() + { + QFileInfo fi; + metronomeSynth = new MetronomeSynth(fi); + metronome = new MetronomeSynthI(); + + QString name("metronome"); + metronome->initInstance(metronomeSynth, name); + } + +//--------------------------------------------------------- +// exitMetronome +//--------------------------------------------------------- + +void exitMetronome() +{ + if(metronome) + delete metronome; + metronome = 0; + + if(metronomeSynth) + delete metronomeSynth; + metronomeSynth = 0; +} + |