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authorGary Scavone <gary@music.mcgill.ca>2007-08-07 14:52:05 +0000
committerStephen Sinclair <sinclair@music.mcgill.ca>2013-10-11 01:19:40 +0200
commitb0080e69d64ce69e21c8ce1b22b1bb7f888f1e58 (patch)
treeb51ebcd31a5280b4f4e9e45484f07d9b35723743 /tests/play_saw.cpp
parent0fbcd74a04713a4725d2f346a493121b623d60ab (diff)
Check in of new version 4.0.0 distribution (GS).
Diffstat (limited to 'tests/play_saw.cpp')
-rw-r--r--tests/play_saw.cpp129
1 files changed, 0 insertions, 129 deletions
diff --git a/tests/play_saw.cpp b/tests/play_saw.cpp
deleted file mode 100644
index b99248f..0000000
--- a/tests/play_saw.cpp
+++ /dev/null
@@ -1,129 +0,0 @@
-/******************************************/
-/*
- play_saw.c
- by Gary P. Scavone, 2001
-
- Play sawtooth waveforms of distinct frequency.
- Takes number of channels and sample rate as
- input arguments. Uses blocking functionality.
-*/
-/******************************************/
-
-#include "RtAudio.h"
-#include <iostream>
-
-/*
-typedef signed long MY_TYPE;
-#define FORMAT RTAUDIO_SINT24
-#define SCALE 2147483647.0
-
-typedef char MY_TYPE;
-#define FORMAT RTAUDIO_SINT8
-#define SCALE 127.0
-*/
-
-typedef signed short MY_TYPE;
-#define FORMAT RTAUDIO_SINT16
-#define SCALE 32767.0
-
-/*
-typedef signed long MY_TYPE;
-#define FORMAT RTAUDIO_SINT32
-#define SCALE 2147483647.0
-
-typedef float MY_TYPE;
-#define FORMAT RTAUDIO_FLOAT32
-#define SCALE 1.0
-
-typedef double MY_TYPE;
-#define FORMAT RTAUDIO_FLOAT64
-#define SCALE 1.0
-*/
-
-#define BASE_RATE 0.005
-#define TIME 4.0
-
-void usage(void) {
- // Error function in case of incorrect command-line
- // argument specifications.
- std::cout << "\nuseage: play_saw N fs <device>\n";
- std::cout << " where N = number of channels,\n";
- std::cout << " fs = the sample rate,\n";
- std::cout << " and device = the device to use (default = 0).\n\n";
- exit(0);
-}
-
-int main(int argc, char *argv[])
-{
- int chans, fs, buffer_size, device = 0;
- long frames, counter = 0, i, j;
- MY_TYPE *buffer;
- RtAudio *audio = 0;
- double *data = 0;
-
- // minimal command-line checking
- if (argc != 3 && argc != 4 ) usage();
-
- chans = (int) atoi(argv[1]);
- fs = (int) atoi(argv[2]);
- if ( argc == 4 )
- device = (int) atoi(argv[3]);
-
- // Open the realtime output device
- buffer_size = 512;
- try {
- audio = new RtAudio(device, chans, 0, 0,
- FORMAT, fs, &buffer_size, 4);
- }
- catch (RtError &error) {
- error.printMessage();
- exit(EXIT_FAILURE);
- }
-
- frames = (long) (fs * TIME);
- data = (double *) calloc(chans, sizeof(double));
-
- try {
- buffer = (MY_TYPE *) audio->getStreamBuffer();
- audio->startStream();
- }
- catch (RtError &error) {
- error.printMessage();
- goto cleanup;
- }
-
- std::cout << "\nPlaying for " << TIME << " seconds ... buffer size = " << buffer_size << "." << std::endl;
- while (counter < frames) {
- for (i=0; i<buffer_size; i++) {
- for (j=0; j<chans; j++) {
- buffer[i*chans+j] = (MY_TYPE) (data[j] * SCALE);
- data[j] += BASE_RATE * (j+1+(j*0.1));
- if (data[j] >= 1.0) data[j] -= 2.0;
- }
- }
-
- try {
- audio->tickStream();
- }
- catch (RtError &error) {
- error.printMessage();
- goto cleanup;
- }
-
- counter += buffer_size;
- }
-
- try {
- audio->stopStream();
- }
- catch (RtError &error) {
- error.printMessage();
- }
-
- cleanup:
- audio->closeStream();
- delete audio;
- if (data) free(data);
-
- return 0;
-}