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Diffstat (limited to 'attic/muse2-oom/muse2/synti/s1/s1.cpp')
| -rw-r--r-- | attic/muse2-oom/muse2/synti/s1/s1.cpp | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/attic/muse2-oom/muse2/synti/s1/s1.cpp b/attic/muse2-oom/muse2/synti/s1/s1.cpp deleted file mode 100644 index 0dca2656..00000000 --- a/attic/muse2-oom/muse2/synti/s1/s1.cpp +++ /dev/null @@ -1,232 +0,0 @@ -//========================================================= -// MusE -// Linux Music Editor -// $Id: s1.cpp,v 1.9.2.5 2009/11/19 04:20:33 terminator356 Exp $ -// -// S1 - simple mono demo synthesizer -// - plays only one note at a time -// - has no gui nor any controller -// -// Version 0.2: stop note on wave zero crossing to avoid -// clicks -// -// (C) Copyright 2001-2004 Werner Schweer (ws@seh.de) -//========================================================= - -#include <cmath> -#include <list> - -#include <QMessageBox> - -#include "libsynti/mono.h" - -#define RESOLUTION 16384 - -//--------------------------------------------------------- -// S1 - simple mono demo synthesizer -//--------------------------------------------------------- - - -class S1 : public MessMono { - static int useCount; - static float *wave_table; - - int gate; - float freq; - unsigned accu; - float sample; - bool _showGui; - - int param; - - virtual void note(int channel, int pitch, int velo); - //virtual void processMessages(); - virtual void process(float** buffer, int offset, int n); - virtual bool hasGui() const { return true; } - virtual bool guiVisible() const { return _showGui; } - virtual void showGui(bool); - virtual bool setController(int channel, int ctrl, int val); - virtual int getControllerInfo(int id, const char** name, int* ctrl, int* min, int* max, int* initval) const; - - public: - S1(); - ~S1(); - }; - -float* S1::wave_table; -int S1::useCount = 0; - -//--------------------------------------------------------- -// S1 -//--------------------------------------------------------- - -S1::S1() : MessMono() - { - - if (useCount++ == 0) { - // - // create sinus wave table - // - wave_table = new float[RESOLUTION]; - for (int i = 0; i < RESOLUTION; i++) - wave_table[i] = sin ((i * 2.0 * M_PI) / RESOLUTION) / 6.0; - } - gate = 0; - - param = 0; - - _showGui=false; - showGui(true); - } - -//--------------------------------------------------------- -// ~S1 -//--------------------------------------------------------- - -S1::~S1() - { - if (--useCount == 0) - delete[] wave_table; - } - -//--------------------------------------------------------- -// noteon -// process note on -//--------------------------------------------------------- - -void S1::note(int /*channel*/, int pitch, int velo) - { - if (velo == 0) { - // - // note off - // - if (sample == 0.0) - gate = 0; - else if (sample > 0.0) - gate = 2; - else if (sample < 0.0) - gate = 3; - } - else { - // - // note on - // - accu = 0; - gate = 1; - freq = 8.176 * exp(float(pitch)*log(2.0)/12.0); - } - } - -//--------------------------------------------------------- -// write -// synthesize n samples into buffer+offset -//--------------------------------------------------------- - -void S1::process(float** buffer, int offset, int n) - { - if (gate == 0) - return; - float* p = buffer[0] + offset; - float sample1, sample2; - unsigned freq_256 = (int) (freq * ((double) RESOLUTION) / sampleRate() * 256.0); - for (int i = 0; i < n; i++) { - accu += freq_256; - while (accu >= RESOLUTION * 256) - accu -= RESOLUTION * 256; - - sample1 = wave_table[accu >> 8]; // sinus component - - if (sample1< 0.0f) // square wave component - sample2 = -0.4; - else - sample2 = 0.4; - - sample = ((1.0-float(param)/127.0)*sample1 + (float(param)/127.0)*sample2) / 2.0; - - // - // stop on zero crossing - // if in decay state - // - if (gate == 2 && sample <= 0.0) { - gate = 0; - break; - } - else if (gate == 3 && sample >= 0.0) { - gate = 0; - break; - } - p[i] += sample; - } - } - - -//--------------------------------------------------------- -// inst -//--------------------------------------------------------- - - -void S1::showGui(bool show) - { - if (show) - QMessageBox::information( NULL, "S1", - "S1 is a demo synth mainly for\n" - "developers wishing to learn\n" - "how to make a M.E.S.S synth.\n" - "\n" - "One modulation parameter is available,\n" - "it sweeps the signal between square and\n" - "sinus wave.\n", 1 ); - } - -bool S1::setController(int, int ctrl, int val) - { - if (ctrl == 1) { - param = val; - } - return true; - } - -int S1::getControllerInfo(int id, const char** name, int* ctrl, int* min, int* max, int* initval) const - { - if (id == 0) { - *name = "Modulation"; - *ctrl = 1; - *min = 0; - *max = 127; - *initval = 0; - return 1; - } - else - return 0; - } - -//--------------------------------------------------------- -// inst -//--------------------------------------------------------- -class QWidget; - - -static Mess* instantiate(int sr, QWidget*, QString* projectPathPtr, const char*) - { - S1* s1 = new S1(); - s1->setSampleRate(sr); - return s1; - } - -extern "C" { - static MESS descriptor = { - "S1", - "S1 MusE Demo Software Synthesizer", - "0.2", // version string - MESS_MAJOR_VERSION, MESS_MINOR_VERSION, - instantiate - }; - // We must compile with -fvisibility=hidden to avoid namespace - // conflicts with global variables. - // Only visible symbol is "mess_descriptor". - // (TODO: all plugins should be compiled this way) - - __attribute__ ((visibility("default"))) - const MESS* mess_descriptor() { return &descriptor; } - } - |