mirror of
https://github.com/thestk/stk
synced 2026-01-12 04:21:52 +00:00
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
/******************************************/
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/*
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Example program to write N sine tones to
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an N channel soundfile.
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By default, the program will write an
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N channel WAV file. However, it is
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simple to change the file type argument
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in the WvOut constructor.
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By Gary P. Scavone, 2000 - 2002.
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*/
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/******************************************/
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#include "WaveLoop.h"
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#include "WvOut.h"
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#include <stdlib.h>
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#include <iostream.h>
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void usage(void) {
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// Error function in case of incorrect command-line
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// argument specifications.
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printf("\nuseage: sine N file time fs\n");
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printf(" where N = number of channels (sines),\n");
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printf(" file = the .wav file to create,\n");
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printf(" time = the amount of time to record (in seconds),\n");
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printf(" and fs = the sample rate (in Hz).\n\n");
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exit(0);
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}
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int
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main(int argc, char *argv[])
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{
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float base_freq = 220.0;
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int samples;
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int i;
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// Minimal command-line checking.
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if (argc != 5) usage();
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int channels = (int) atoi(argv[1]);
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double time = atof(argv[3]);
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double srate = atof(argv[4]);
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// Initialize our object and data pointers.
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WvOut *output = 0;
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MY_FLOAT *vector = 0;
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WaveLoop **oscs = (WaveLoop **) malloc( channels * sizeof(WaveLoop *) );
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for (i=0; i<channels; i++) oscs[i] = 0;
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// If you want to change the default sample rate (set in Stk.h), do
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// it before instantiating any objects!!
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Stk::setSampleRate( srate );
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// Define and load the rawwave file(s) ... the path is critical.
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try {
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for (i=0; i<channels; i++)
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oscs[i] = new WaveLoop( "../../rawwaves/sinewave.raw", TRUE );
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}
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catch (StkError &) {
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goto cleanup;
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}
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// Set oscillator frequency(ies) here ... somewhat random.
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for (i=0; i<channels; i++)
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oscs[i]->setFrequency( base_freq + i*(45.0) );
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// Define and open the soundfile for output. Other file
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// format options include: WVOUT_SND, WVOUT_AIF, WVOUT_MAT,
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// and WVOUT_RAW. Other data type options include:
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// STK_SINT8, STK_SINT32, STK_FLOAT32, and STK_FLOAT64.
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try {
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output = new WvOut( argv[2], channels, WvOut::WVOUT_WAV, Stk::STK_SINT16 );
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}
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catch (StkError &) {
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goto cleanup;
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}
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// Here's the runtime loop
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samples = (int) ( time * Stk::sampleRate() );
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vector = (MY_FLOAT *) new MY_FLOAT[channels];
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for ( i=0; i<samples; i++ ) {
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for (int j=0; j<channels; j++) {
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vector[j] = oscs[j]->tick();
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}
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output->tickFrame(vector);
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}
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cleanup:
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for (i=0; i<channels; i++)
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delete oscs[i];
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free(oscs);
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delete [] vector;
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delete output;
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return 0;
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}
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