/* this will open a connection to the AF sound server. If you are porting
to a different sound format, this should do all the setup, so when we
go to play the sample we can just do something like AFPlaySamples() or
write(dev_audio_file_descriptor, data);
*/
Bool SetupSound() {
AFSetACAttributes attributes;
int device;
char *server;
device = SPEAKER;
attributes.preempt = Mix;
attributes.start_timeout = 0;
attributes.end_silence = 0;
attributes.play_gain = 0;
attributes.rec_gain = 0;
server=(char *)getenv("AUDIOFILE");
if (server==NULL) server=":0";
aud =AFOpenAudioConn(server);
if (aud==NULL) return FALSE;
ac =AFCreateAC(aud, device, ACPlayGain, &attributes);
atime=AFGetTime(ac);
return TRUE;
}
int init_sound (void)
{
AFSetACAttributes attributes;
AFDeviceDescriptor *aDev;
int device;
aud = AFOpenAudioConn(NULL);
have_sound = !(aud == NULL);
if (!have_sound) {
return 0;
}
for(device = 0; device < ANumberOfAudioDevices(aud); device++) {
aDev = AAudioDeviceDescriptor(aud, device);
rate = aDev->playSampleFreq;
sndbufsize = (rate / 8) * 4;
if(aDev->inputsFromPhone == 0
&& aDev->outputsToPhone == 0
&& aDev->playNchannels == 1)
break;
}
if (device == ANumberOfAudioDevices(aud)) {
return 0;
}
attributes.type = LIN16;
ac = AFCreateAC(aud, device, ACEncodingType, &attributes);
aftime = AFGetTime(ac);
init_sound_table16 ();
sample_handler = sample16_handler;
sample_evtime = (long)MAXHPOS_PAL * MAXVPOS_PAL * VBLANK_HZ_PAL / rate;
sndbufpt = sndbuffer;
sound_available = 1;
printf ("Sound driver found and configured for %d bits at %d Hz, buffer is %d bytes\n", 16, rate, sndbufsize);
return 1;
}
/* To change for nonAF-sound, change SetupSound() and the last part
of this function. Change LoadFile only if you need more data stored
when loading. (maybe sample rate, stereo on/off, etc)
*/
void PlaySoundFile(char *filename, int forked) {
static int sound_is_setup=FALSE;
struct Sound *sound;
DEBUG(D_CALLS) printf("PlaySoundFile: %s\n",filename);
if (!sound_is_setup || forked) {
DEBUG(D_CHECKP) printf("PSF: Connecting to AF server\n");
Zero(&InMemList, sizeof(InMemList));
if (!SetupSound()) {
printf("Could not connect to sound server.\n");
return;
}
sound_is_setup=TRUE;
}
sound=(struct Sound *) LoadFile(filename);
DEBUG(D_CHECKP) printf("PSF: Loaded %s into %d\n",filename, sound);
if (sound==NULL) return;
/* this part is sound-device dependant */
DEBUG(D_CHECKP) printf("PSF: Actually playing now!\n");
atime=AFGetTime(ac);
AFPlaySamples(ac, atime+PLAY_DELAY, sound->size, (unsigned char *)sound->data);
}
