int audio_reset_parameters(struct audio_info_struct *ai)
{
audio_set_format(ai);
audio_set_channels(ai);
audio_set_rate(ai);
return 0;
}
/* !!! pamiêtaæ o zainicjowaniu parametrów !!! */
int outputInit()
{
int ret;
filedevice = open( SOUNDDEVICE, O_WRONLY );
if ( filedevice == -1 )
return -1;
ret = ioctl( filedevice, SNDCTL_DSP_RESET, NULL );
if(ret < 0)
{
fprintf(stderr,"Can't reset audio!\n");
return -1;
}
if ( audio_set_format() < 0 )
return -1;
if ( audio_set_rate() < 0 )
return -1;
if ( audio_set_channels() < 0 )
return -1;
return 0;
}
int audio_init(int samplerate, double framerate)
{
/* Shutdown first */
audio_shutdown();
/* Clear the sound data context */
memset(&snd, 0, sizeof (snd));
/* Initialize Blip Buffers */
snd.blips[0] = blip_new(samplerate / 10);
if (!snd.blips[0])
{
return -1;
}
/* Mega CD sound hardware */
if (system_hw == SYSTEM_MCD)
{
/* allocate blip buffers */
snd.blips[1] = blip_new(samplerate / 10);
snd.blips[2] = blip_new(samplerate / 10);
if (!snd.blips[1] || !snd.blips[2])
{
audio_shutdown();
return -1;
}
}
/* Initialize resampler internal rates */
audio_set_rate(samplerate, framerate);
/* Set audio enable flag */
snd.enabled = 1;
/* Reset audio */
audio_reset();
return (0);
}
void init_sound (void)
{
int channels;
int dspbits;
unsigned int rate;
if (currprefs.sound_maxbsiz < 128 || currprefs.sound_maxbsiz > 16384) {
fprintf (stderr, "Sound buffer size %d out of range.\n", currprefs.sound_maxbsiz);
currprefs.sound_maxbsiz = 8192;
}
sndbufsize = 8192;
dspbits = currprefs.sound_bits;
rate = currprefs.sound_freq;
channels = currprefs.stereo ? 2 : 1;
if (dspbits != 16) {
fprintf(stderr, "Only 16 bit sounds supported.\n");
exit(1);
}
if (rate < 1 || rate > SOUNDTICKS_NTSC) {
fprintf(stderr, "Too small or high a rate: %u\n", rate);
exit(1);
}
if (channels != 2) {
fprintf(stderr, "Only stereo supported.\n");
exit(1);
}
sound_bytes_per_second = (dspbits / 8) * channels * rate;
audio_set_rate(rate);
sound_available = 1;
sndbufpt = sndbuffer;
}
int audio_open(struct audio_info_struct *ai)
{
int dev = AL_DEFAULT_OUTPUT;
ALconfig config = alNewConfig();
ALport port = NULL;
/* Test for correct completion */
if (config == 0) {
fprintf(stderr,"audio_open : %s\n",alGetErrorString(oserror()));
return -1;
}
/* Set port parameters */
if(ai->channels == 2)
alSetChannels(config, AL_STEREO);
else
alSetChannels(config, AL_MONO);
alSetWidth(config, AL_SAMPLE_16);
alSetSampFmt(config,AL_SAMPFMT_TWOSCOMP);
alSetQueueSize(config, 131069);
/* Setup output device to specified module. If there is no module
specified in ai structure, use the default four output */
if ((ai->device) != NULL) {
char *dev_name;
dev_name=malloc((strlen(ai->device) + strlen(analog_output_res_name) + 1) *
sizeof(char));
strcpy(dev_name,ai->device);
strcat(dev_name,analog_output_res_name);
/* Find the asked device resource */
dev=alGetResourceByName(AL_SYSTEM,dev_name,AL_DEVICE_TYPE);
/* Free allocated space */
free(dev_name);
if (!dev) {
fprintf(stderr,"Invalid audio resource: %s (%s)\n",dev_name,
alGetErrorString(oserror()));
return -1;
}
}
/* Set the device */
if (alSetDevice(config,dev) < 0)
{
fprintf(stderr,"audio_open : %s\n",alGetErrorString(oserror()));
return -1;
}
/* Open the audio port */
port = alOpenPort("mpg123-VSC", "w", config);
if(port == NULL) {
fprintf(stderr, "Unable to open audio channel: %s\n",
alGetErrorString(oserror()));
return -1;
}
ai->handle = (void*)port;
audio_set_format(ai, config);
audio_set_channels(ai, config);
audio_set_rate(ai, config);
alFreeConfig(config);
return 1;
}
static javacall_result video_set_rate(javacall_handle handle, long rate){
return audio_set_rate(handle, rate);
}