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Version 4.1

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This commit is contained in:
Gary Scavone
2009-03-24 23:02:12 -04:00
committed by Stephen Sinclair
parent 81475b04c5
commit 2f09fcd019
279 changed files with 36223 additions and 25364 deletions
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115
projects/demo/demo.cpp
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@@ -1,33 +1,38 @@
// demo.cpp
//
// An STK program for monophonic voice playback and control.
// An example STK program for voice playback and control.
#include "SKINI.msg"
#include "Messager.h"
#include "WvOut.h"
#include "Instrmnt.h"
#include "PRCRev.h"
#include "Voicer.h"
// Miscellaneous command-line parsing and instrument allocation
// functions are defined in utilites.cpp ... specific to this program.
#include "utilities.h"
#include <stdlib.h>
#include <signal.h>
#include <math.h>
#include <iostream.h>
bool done;
static void finish(int ignore){ done = true; }
int main(int argc, char *argv[])
{
bool done;
Instrmnt *instrument = 0;
Messager *messager = 0;
Instrmnt **instrument = 0;
WvOut **output = 0;
Messager *messager = 0;
Reverb *reverb = 0;
MY_FLOAT pitch = 220.0;
Voicer *voicer = 0;
int i, nVoices = 1;
MY_FLOAT t60 = 1.0; // in seconds
// If you want to change the default sample rate (set in Stk.h), do
// it before instantiating any objects!!
// it before instantiating any objects! If the sample rate is
// specified in the command line, it will override this setting.
Stk::setSampleRate( 22050.0 );
// Check the command-line arguments for errors and to determine
@@ -35,15 +40,28 @@ int main(int argc, char *argv[])
int nOutputs = checkArgs(argc, argv);
output = (WvOut **) calloc(nOutputs, sizeof(WvOut *));
// Instantiate the instrument from the command-line argument.
int voice = voiceByName(argv[1], &instrument);
if ( voice < 0 ) usage(argv[0]);
// Instantiate the instrument(s) type from the command-line argument
// (in utilities.cpp).
nVoices = countVoices(argc, argv);
instrument = (Instrmnt **) calloc(nVoices, sizeof(Instrmnt *));
int voice = voiceByName(argv[1], &instrument[0]);
if ( voice < 0 ) {
free( output );
free( instrument );
usage(argv[0]);
}
// If there was no error allocating the first voice, we should be fine for more.
for ( i=1; i<nVoices; i++ )
voiceByName(argv[1], &instrument[i]);
// Parse the command-line flags, instantiate WvOut objects, and instantiate
// the input message controller (in utilities.cpp).
voicer = (Voicer *) new Voicer(nVoices);
for ( i=0; i<nVoices; i++ )
voicer->addInstrument( instrument[i] );
// Parse the command-line flags, instantiate WvOut objects, and
// instantiate the input message controller (in utilities.cpp).
try {
int controlMask = parseArgs(argc, argv, output);
messager = new Messager( controlMask );
parseArgs(argc, argv, output, &messager);
}
catch (StkError &) {
goto cleanup;
@@ -52,10 +70,13 @@ int main(int argc, char *argv[])
reverb = new PRCRev( t60 );
reverb->setEffectMix(0.2);
// Install an interrupt handler function.
(void) signal(SIGINT, finish);
// The runtime loop begins here:
done = FALSE;
int nTicks, type, j, i;
MY_FLOAT temp, byte2, byte3, sample;
int nTicks, type, j;
MY_FLOAT byte2, byte3, sample;
while (!done) {
// Look for new messages and return a delta time (in samples).
@@ -64,9 +85,8 @@ int main(int argc, char *argv[])
done = TRUE;
nTicks = messager->getDelta();
for ( i=0; i<nTicks; i++ ) {
sample = reverb->tick( instrument->tick() );
sample = reverb->tick( voicer->tick() );
for ( j=0; j<nOutputs; j++ ) output[j]->tick(sample);
}
@@ -79,51 +99,50 @@ int main(int argc, char *argv[])
case __SK_NoteOn_:
if (byte3 == 0.0) // velocity is zero ... really a NoteOff
instrument->noteOff( 0.5 );
else { // a NoteOn
if ( byte2 < 0.0 || byte2 > 128.0 ) continue;
pitch = Midi2Pitch[(unsigned int) byte2];
instrument->noteOn(pitch, byte3 * ONE_OVER_128);
}
voicer->noteOff( byte2, 64.0 );
else // a NoteOn
voicer->noteOn( byte2, byte3 );
break;
case __SK_NoteOff_:
instrument->noteOff(byte3 * ONE_OVER_128);
voicer->noteOff( byte2, byte3 );
break;
case __SK_ControlChange_:
if (byte2 == 44.0)
reverb->setEffectMix(byte3 * ONE_OVER_128);
else
instrument->controlChange( (int)byte2, byte3 );
voicer->controlChange( (int) byte2, byte3 );
break;
case __SK_AfterTouch_:
instrument->controlChange( 128, byte2 );
voicer->controlChange( 128, byte2 );
break;
case __SK_PitchChange_:
voicer->setFrequency( byte2 );
break;
case __SK_PitchBend_:
if ( byte2 < 0.0 || byte2 > 128.0 ) continue;
temp = byte2 - (int)byte2; // floating-point remainder
pitch = Midi2Pitch[(unsigned int)byte2] * pow(2.0, temp/12.0);
instrument->setFrequency(pitch);
voicer->pitchBend( byte2 );
break;
case __SK_ProgramChange_:
if (voice != (int)byte2) {
instrument->noteOff(1.0);
// Let the instrument settle a bit.
for (i=0; i<4096; i++) {
sample = reverb->tick( instrument->tick() );
if ( voice != (int) byte2 ) {
voicer->silence();
// Let the instrument(s) settle a bit.
for ( i=0; i<4096; i++ ) {
sample = reverb->tick( voicer->tick() );
for ( j=0; j<nOutputs; j++ ) output[j]->tick(sample);
}
delete instrument;
voice = voiceByNumber( (int)byte2, &instrument );
if ( voice < 0 ) {
// Default instrument = 0
voice = voiceByNumber( 0, &instrument );
for ( i=0; i<nVoices; i++ ) {
voicer->removeInstrument( instrument[i] );
delete instrument[i];
voice = voiceByNumber( (int)byte2, &instrument[i] );
if ( voice < 0 )
voice = voiceByNumber( 0, &instrument[i] );
voicer->addInstrument( instrument[i] );
}
instrument->noteOn(pitch, 0.2);
}
}
}
@@ -132,7 +151,7 @@ int main(int argc, char *argv[])
// Let the reverb settle a bit.
nTicks = (long) (t60 * Stk::sampleRate());
for ( i=0; i<nTicks; i++) {
sample = reverb->tick( instrument->tick() );
sample = reverb->tick( voicer->tick() );
for ( j=0; j<nOutputs; j++ ) output[j]->tick(sample);
}
@@ -142,8 +161,14 @@ int main(int argc, char *argv[])
free(output);
delete messager;
delete instrument;
delete reverb;
delete voicer;
cout << "\ndemo finished ... goodbye.\n" << endl;
for ( i=0; i<nVoices; i++ ) delete instrument[i];
free(instrument);
cout << "\nStk demo finished ... goodbye.\n" << endl;
return 0;
}