示例#1
0
static int Audio_Available(void)
{
	int available;
	int status;
	snd_pcm_t *handle;

	available = 0;
	if (LoadALSALibrary() < 0) {
		return available;
	}
	status = SDL_NAME(snd_pcm_open)(&handle, get_audio_device(2), SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
	if ( status >= 0 ) {
		available = 1;
        	SDL_NAME(snd_pcm_close)(handle);
	}
	UnloadALSALibrary();
	return(available);
}
示例#2
0
static int
LoadALSALibrary(void)
{
    int retval = 0;
    if (alsa_handle == NULL) {
        alsa_handle = SDL_LoadObject(alsa_library);
        if (alsa_handle == NULL) {
            retval = -1;
            /* Don't call SDL_SetError(): SDL_LoadObject already did. */
        } else {
            retval = load_alsa_syms();
            if (retval < 0) {
                UnloadALSALibrary();
            }
        }
    }
    return retval;
}
示例#3
0
static int LoadALSALibrary(void) {
	int i, retval = -1;

	alsa_handle = SDL_LoadObject(alsa_library);
	if (alsa_handle) {
		alsa_loaded = 1;
		retval = 0;
		for (i = 0; i < SDL_arraysize(alsa_functions); i++) {
			*alsa_functions[i].func = SDL_LoadFunction(alsa_handle,alsa_functions[i].name);
			if (!*alsa_functions[i].func) {
				retval = -1;
				UnloadALSALibrary();
				break;
			}
		}
	}
	return retval;
}
示例#4
0
static int
LoadALSALibrary(void)
{
    int retval = 0;
    if (alsa_handle == NULL) {
        alsa_handle = dlopen(alsa_library, RTLD_NOW);
        if (alsa_handle == NULL) {
            retval = -1;
            SDL_SetError("ALSA: dlopen('%s') failed: %s\n",
                         alsa_library, strerror(errno));
        } else {
            retval = load_alsa_syms();
            if (retval < 0) {
                UnloadALSALibrary();
            }
        }
    }
    return retval;
}
示例#5
0
static int LoadALSALibrary(void) {
	int i, retval = -1;

/*	alsa_handle = SDL_LoadObject(alsa_library);*/
	alsa_handle = dlopen(alsa_library,RTLD_NOW);
	if (alsa_handle) {
		alsa_loaded = 1;
		retval = 0;
		for (i = 0; i < SDL_arraysize(alsa_functions); i++) {
/*			*alsa_functions[i].func = SDL_LoadFunction(alsa_handle,alsa_functions[i].name);*/
#if HAVE_DLVSYM
			*alsa_functions[i].func = dlvsym(alsa_handle,alsa_functions[i].name,"ALSA_0.9");
			if (!*alsa_functions[i].func)
#endif
				*alsa_functions[i].func = dlsym(alsa_handle,alsa_functions[i].name);
			if (!*alsa_functions[i].func) {
				retval = -1;
				UnloadALSALibrary();
				break;
			}
		}
	}
	return retval;
}
示例#6
0
static void Audio_DeleteDevice(SDL_AudioDevice *device)
{
	SDL_free(device->hidden);
	SDL_free(device);
	UnloadALSALibrary();
}
示例#7
0
static void
ALSA_Deinitialize(void)
{
    UnloadALSALibrary();
}