static int
ESD_Init(SDL_AudioDriverImpl * impl)
{
if (LoadESDLibrary() < 0) {
return 0;
} else {
int connection = 0;
/* Don't start ESD if it's not running */
SDL_setenv("ESD_NO_SPAWN", "1", 0);
connection = SDL_NAME(esd_open_sound) (NULL);
if (connection < 0) {
UnloadESDLibrary();
SDL_SetError("ESD: esd_open_sound failed (no audio server?)");
return 0;
}
SDL_NAME(esd_close) (connection);
}
/* Set the function pointers */
impl->OpenDevice = ESD_OpenDevice;
impl->PlayDevice = ESD_PlayDevice;
impl->WaitDevice = ESD_WaitDevice;
impl->GetDeviceBuf = ESD_GetDeviceBuf;
impl->CloseDevice = ESD_CloseDevice;
impl->Deinitialize = ESD_Deinitialize;
impl->OnlyHasDefaultOutputDevice = 1;
return 1; /* this audio target is available. */
}
static int Audio_Available(void)
{
int connection;
int available;
available = 0;
if ( LoadESDLibrary() < 0 ) {
return available;
}
connection = SDL_NAME(esd_open_sound)(NULL);
if ( connection >= 0 ) {
available = 1;
SDL_NAME(esd_close)(connection);
}
UnloadESDLibrary();
return(available);
}
static int LoadESDLibrary(void)
{
int i, retval = -1;
esd_handle = SDL_LoadObject(esd_library);
if ( esd_handle ) {
esd_loaded = 1;
retval = 0;
for ( i=0; i<SDL_TABLESIZE(esd_functions); ++i ) {
*esd_functions[i].func = SDL_LoadFunction(esd_handle, esd_functions[i].name);
if ( !*esd_functions[i].func ) {
retval = -1;
UnloadESDLibrary();
break;
}
}
}
return retval;
}
static void
ESD_Deinitialize(void)
{
UnloadESDLibrary();
}
static void Audio_DeleteDevice(SDL_AudioDevice *device)
{
free(device->hidden);
free(device);
UnloadESDLibrary();
}