/*** thinlib (c) 2000 Matthew Conte (matt@conte.com)****** This program is free software; you can redistribute it and/or** modify it under the terms of version 2 of the GNU Library General ** Public License as published by the Free Software Foundation.**** 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 ** Library General Public License for more details.  To obtain a ** copy of the GNU Library General Public License, write to the Free ** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.**** Any permitted reproduction of these routines, in whole or in part,** must bear this legend.****** tl_sound.c**** sound driver** $Id: tl_sound.c,v 1.3 2001/03/12 06:06:55 matt Exp $*/#include "tl_types.h"#include "tl_sound.h"#include "tl_sb.h"#include "tl_log.h"/* TODO: make GuS driver... */typedef struct snddriver_s{   const char *name;   int  (*init)(int *sample_rate, int *frag_size, int *format);   void (*shutdown)(void);   int  (*start)(audio_callback_t callback);   void (*stop)(void);   void (*setrate)(int sample_rate);   audio_callback_t callback;} snddriver_t;static snddriver_t sb ={   "Sound Blaster",   thin_sb_init,   thin_sb_shutdown,   thin_sb_start,   thin_sb_stop,   thin_sb_setrate,   NULL};static snddriver_t *driver_list[] ={   &sb,   /* TODO: add more drivers here */   NULL};static snddriver_t snddriver = {   NULL,   NULL,   NULL,   NULL,   NULL,   NULL,   NULL,};int thin_sound_init(thinsound_t *sound_params){   snddriver_t **iter;   int sample_rate, frag_size, format;   THIN_ASSERT(sound_params);      sample_rate = sound_params->sample_rate;   frag_size = sound_params->frag_size;   format = sound_params->format;   for (iter = driver_list; *iter != NULL; iter++)   {      if (0 == (*iter)->init(&sample_rate, &frag_size, &format))      {         snddriver = **iter;         /* copy the parameters back */         sound_params->sample_rate = sample_rate;         sound_params->frag_size = frag_size;         sound_params->format = format;         /* and set the callback */         snddriver.callback = sound_params->callback;         return 0;      }   }   snddriver.name = NULL;   thin_printf("thin: could not find any sound drivers.\n");   return -1;}void thin_sound_shutdown(void){   if (NULL == snddriver.name)      return;   snddriver.shutdown();   memset(&snddriver, 0, sizeof(snddriver_t));}void thin_sound_start(void){   if (NULL == snddriver.name)      return;   THIN_ASSERT(snddriver.callback);   snddriver.start(snddriver.callback);}void thin_sound_stop(void){   if (NULL == snddriver.name)      return;   snddriver.stop();}void thin_sound_setrate(int sample_rate){   if (snddriver.setrate)      snddriver.setrate(sample_rate);}/*** $Log: tl_sound.c,v $** Revision 1.3  2001/03/12 06:06:55  matt** better keyboard driver, support for bit depths other than 8bpp**** Revision 1.2  2001/02/19 02:55:36  matt** extern this, eh!**** Revision 1.1  2000/12/16 17:29:20  matt** initial revision***/