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playwave.c
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playwave.c
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/*
PLAYWAVE: A test application for the SDL mixer library.
Copyright (C) 1997-1999 Sam Lantinga
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
5635-34 Springhouse Dr.
Pleasanton, CA 94588 (USA)
slouken@devolution.com
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#ifndef WIN32
#include <unistd.h>
#endif
#include <SDL/SDL.h>
#include "mixer.h"
static int audio_open = 0;
static Mix_Chunk *wave = NULL;
void CleanUp(void)
{
if ( audio_open ) {
Mix_CloseAudio();
audio_open = 0;
}
if ( wave ) {
Mix_FreeChunk(wave);
wave = NULL;
}
SDL_Quit();
}
void Usage(char *argv0)
{
fprintf(stderr, "Usage: %s [-8] [-r rate] [-m] <wavefile>\n", argv0);
}
main(int argc, char *argv[])
{
Uint32 audio_rate;
Uint16 audio_format;
int audio_channels;
int i;
/* Initialize variables */
audio_rate = 22050;
audio_format = AUDIO_S16;
audio_channels = 2;
/* Check command line usage */
for ( i=1; argv[i] && (*argv[i] == '-'); ++i ) {
if ( (strcmp(argv[i], "-r") == 0) && argv[i+1] ) {
++i;
audio_rate = atoi(argv[i]);
} else
if ( strcmp(argv[i], "-m") == 0 ) {
audio_channels = 1;
} else
if ( strcmp(argv[i], "-8") == 0 ) {
audio_format = AUDIO_U8;
} else {
Usage(argv[0]);
exit(1);
}
}
if ( ! argv[i] ) {
Usage(argv[0]);
exit(1);
}
/* Initialize the SDL library */
if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) {
fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
exit(255);
}
atexit(CleanUp);
signal(SIGINT, exit);
signal(SIGTERM, exit);
/* Open the audio device */
if (Mix_OpenAudio(audio_rate, audio_format, audio_channels, 4096) < 0) {
fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
exit(2);
} else {
Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
printf("Opened audio at %d Hz %d bit %s\n", audio_rate,
(audio_format&0xFF),
(audio_channels > 1) ? "stereo" : "mono");
}
audio_open = 1;
/* Load the requested wave file */
wave = Mix_LoadWAV(argv[i]);
if ( wave == NULL ) {
fprintf(stderr, "Couldn't load %s: %s\n",
argv[i], SDL_GetError());
exit(2);
}
/* Play and then exit */
Mix_PlayChannel(0, wave, 0);
while ( Mix_Playing(0) ) {
SDL_Delay(100);
}
exit(0);
}