[sdl_omap.git] / test / loopwave.c


/* Program to load a wave file and loop playing it using SDL sound */

/* loopwaves.c is much more robust in handling WAVE files -- 
	This is only for simple WAVEs
*/
#include "SDL_config.h"

#include <stdio.h>
#include <stdlib.h>

#if HAVE_SIGNAL_H
#include <signal.h>
#endif

#include "SDL.h"
#include "SDL_audio.h"

struct {
	SDL_AudioSpec spec;
	Uint8   *sound;			/* Pointer to wave data */
	Uint32   soundlen;		/* Length of wave data */
	int      soundpos;		/* Current play position */
} wave;


/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void quit(int rc)
{
	SDL_Quit();
	exit(rc);
}


void SDLCALL fillerup(void *unused, Uint8 *stream, int len)
{
	Uint8 *waveptr;
	int    waveleft;

	/* Set up the pointers */
	waveptr = wave.sound + wave.soundpos;
	waveleft = wave.soundlen - wave.soundpos;

	/* Go! */
	while ( waveleft <= len ) {
		SDL_memcpy(stream, waveptr, waveleft);
		stream += waveleft;
		len -= waveleft;
		waveptr = wave.sound;
		waveleft = wave.soundlen;
		wave.soundpos = 0;
	}
	SDL_memcpy(stream, waveptr, len);
	wave.soundpos += len;
}

static int done = 0;
void poked(int sig)
{
	done = 1;
}

int main(int argc, char *argv[])
{
	char name[32];

	/* Load the SDL library */
	if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) {
		fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
		return(1);
	}
	if ( argv[1] == NULL ) {
		argv[1] = "sample.wav";
	}
	/* Load the wave file into memory */
	if ( SDL_LoadWAV(argv[1],
			&wave.spec, &wave.sound, &wave.soundlen) == NULL ) {
		fprintf(stderr, "Couldn't load %s: %s\n",
						argv[1], SDL_GetError());
		quit(1);
	}

	wave.spec.callback = fillerup;
#if HAVE_SIGNAL_H
	/* Set the signals */
#ifdef SIGHUP
	signal(SIGHUP, poked);
#endif
	signal(SIGINT, poked);
#ifdef SIGQUIT
	signal(SIGQUIT, poked);
#endif
	signal(SIGTERM, poked);
#endif /* HAVE_SIGNAL_H */

	/* Initialize fillerup() variables */
	if ( SDL_OpenAudio(&wave.spec, NULL) < 0 ) {
		fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
		SDL_FreeWAV(wave.sound);
		quit(2);
	}
	SDL_PauseAudio(0);

	/* Let the audio run */
	printf("Using audio driver: %s\n", SDL_AudioDriverName(name, 32));
	while ( ! done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING) )
		SDL_Delay(1000);

	/* Clean up on signal */
	SDL_CloseAudio();
	SDL_FreeWAV(wave.sound);
	SDL_Quit();
	return(0);
}
Commit	Line	Data
	1
	2	/* Program to load a wave file and loop playing it using SDL sound */
	3
	4	/* loopwaves.c is much more robust in handling WAVE files --
	5	This is only for simple WAVEs
	6	*/
	7	#include "SDL_config.h"
	8
	9	#include <stdio.h>
	10	#include <stdlib.h>
	11
	12	#if HAVE_SIGNAL_H
	13	#include <signal.h>
	14	#endif
	15
	16	#include "SDL.h"
	17	#include "SDL_audio.h"
	18
	19	struct {
	20	SDL_AudioSpec spec;
	21	Uint8 sound; / Pointer to wave data */
	22	Uint32 soundlen; /* Length of wave data */
	23	int soundpos; /* Current play position */
	24	} wave;
	25
	26
	27	/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
	28	static void quit(int rc)
	29	{
	30	SDL_Quit();
	31	exit(rc);
	32	}
	33
	34
	35	void SDLCALL fillerup(void unused, Uint8 stream, int len)
	36	{
	37	Uint8 *waveptr;
	38	int waveleft;
	39
	40	/* Set up the pointers */
	41	waveptr = wave.sound + wave.soundpos;
	42	waveleft = wave.soundlen - wave.soundpos;
	43
	44	/* Go! */
	45	while ( waveleft <= len ) {
	46	SDL_memcpy(stream, waveptr, waveleft);
	47	stream += waveleft;
	48	len -= waveleft;
	49	waveptr = wave.sound;
	50	waveleft = wave.soundlen;
	51	wave.soundpos = 0;
	52	}
	53	SDL_memcpy(stream, waveptr, len);
	54	wave.soundpos += len;
	55	}
	56
	57	static int done = 0;
	58	void poked(int sig)
	59	{
	60	done = 1;
	61	}
	62
	63	int main(int argc, char *argv[])
	64	{
	65	char name[32];
	66
	67	/* Load the SDL library */
	68	if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) {
	69	fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
	70	return(1);
	71	}
	72	if ( argv[1] == NULL ) {
	73	argv[1] = "sample.wav";
	74	}
	75	/* Load the wave file into memory */
	76	if ( SDL_LoadWAV(argv[1],
	77	&wave.spec, &wave.sound, &wave.soundlen) == NULL ) {
	78	fprintf(stderr, "Couldn't load %s: %s\n",
	79	argv[1], SDL_GetError());
	80	quit(1);
	81	}
	82
	83	wave.spec.callback = fillerup;
	84	#if HAVE_SIGNAL_H
	85	/* Set the signals */
	86	#ifdef SIGHUP
	87	signal(SIGHUP, poked);
	88	#endif
	89	signal(SIGINT, poked);
	90	#ifdef SIGQUIT
	91	signal(SIGQUIT, poked);
	92	#endif
	93	signal(SIGTERM, poked);
	94	#endif /* HAVE_SIGNAL_H */
	95
	96	/* Initialize fillerup() variables */
	97	if ( SDL_OpenAudio(&wave.spec, NULL) < 0 ) {
	98	fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
	99	SDL_FreeWAV(wave.sound);
	100	quit(2);
	101	}
	102	SDL_PauseAudio(0);
	103
	104	/* Let the audio run */
	105	printf("Using audio driver: %s\n", SDL_AudioDriverName(name, 32));
	106	while ( ! done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING) )
	107	SDL_Delay(1000);
	108
	109	/* Clean up on signal */
	110	SDL_CloseAudio();
	111	SDL_FreeWAV(wave.sound);
	112	SDL_Quit();
	113	return(0);
	114	}