src/audio/alsa/SDL_alsa_audio.c
branchSDL-1.2
changeset 4334 afadcd7d2319
parent 4333 55717a755897
child 4336 77b20871fd44
equal deleted inserted replaced
4333:55717a755897 4334:afadcd7d2319
    40 #endif
    40 #endif
    41 
    41 
    42 
    42 
    43 /* The tag name used by ALSA audio */
    43 /* The tag name used by ALSA audio */
    44 #define DRIVER_NAME         "alsa"
    44 #define DRIVER_NAME         "alsa"
    45 
       
    46 /* The default ALSA audio driver */
       
    47 #define DEFAULT_DEVICE	"default"
       
    48 
    45 
    49 /* Whether we should set the buffer size or the period size */
    46 /* Whether we should set the buffer size or the period size */
    50 /*#define SET_PERIOD_SIZE*/
    47 /*#define SET_PERIOD_SIZE*/
    51 /*#define DEBUG_PERIOD_SIZE*/
    48 /*#define DEBUG_PERIOD_SIZE*/
    52 
    49 
   170 {
   167 {
   171 	const char *device;
   168 	const char *device;
   172 	
   169 	
   173 	device = SDL_getenv("AUDIODEV");	/* Is there a standard variable name? */
   170 	device = SDL_getenv("AUDIODEV");	/* Is there a standard variable name? */
   174 	if ( device == NULL ) {
   171 	if ( device == NULL ) {
   175 		if (channels == 6) device = "surround51";
   172 		switch (channels) {
   176 		else if (channels == 4) device = "surround40";
   173 		case 6:
   177 		else device = DEFAULT_DEVICE;
   174 			device = "plug:surround51";
       
   175 			break;
       
   176 		case 4:
       
   177 			device = "plug:surround40";
       
   178 			break;
       
   179 		default:
       
   180 			device = "default";
       
   181 			break;
       
   182 		}
   178 	}
   183 	}
   179 	return device;
   184 	return device;
   180 }
   185 }
   181 
   186 
   182 /* Audio driver bootstrap functions */
   187 /* Audio driver bootstrap functions */