int mixer_allocate_channels(int channels, const int *default_mixing_levels)
{
int i, j;
/* make sure we didn't overrun the number of available channels */
if (first_free_channel + channels > MIXER_MAX_CHANNELS)
{
logerror("Too many mixer channels (requested %d, available %d)\n", first_free_channel + channels, MIXER_MAX_CHANNELS);
exit(1);
}
/* loop over channels requested */
for (i = 0; i < channels; i++)
{
struct mixer_channel_data *channel = &mixer_channel[first_free_channel + i];
/* extract the basic data */
channel->default_mixing_level = MIXER_GET_LEVEL(default_mixing_levels[i]);
channel->pan = MIXER_GET_PAN(default_mixing_levels[i]);
channel->gain = MIXER_GET_GAIN(default_mixing_levels[i]);
channel->volume = 100;
/* backwards compatibility with old 0-255 volume range */
if (channel->default_mixing_level > 100)
channel->default_mixing_level = channel->default_mixing_level * 25 / 255;
/* attempt to load in the configuration data for this channel */
channel->mixing_level = channel->default_mixing_level;
if (!config_invalid)
{
/* if the defaults match, set the mixing level from the config */
if (channel->default_mixing_level == channel->config_default_mixing_level)
channel->mixing_level = channel->config_mixing_level;
/* otherwise, invalidate all channels that have been created so far */
else
{
config_invalid = 1;
for (j = 0; j < first_free_channel + i; j++)
mixer_set_mixing_level(j, mixer_channel[j].default_mixing_level);
}
}
/* set the default name */
mixer_set_name(first_free_channel + i, 0);
}
/* increment the counter and return the first one */
first_free_channel += channels;
return first_free_channel - channels;
}
void xmame_set_mixer_volume( int ch, int level )
{
if( use_fmgen ){
switch( ch ){
case XMAME_MIXER_FMPSG:
if( level < FMPSGVOL_MIN ) level = FMPSGVOL_MIN;
if( level > FMPSGVOL_MAX ) level = FMPSGVOL_MAX;
mixer_set_mixing_level( 0, level );
mixer_set_mixing_level( 1, level );
break;
case XMAME_MIXER_BEEP:
if( level < BEEPVOL_MIN ) level = BEEPVOL_MIN;
if( level > BEEPVOL_MAX ) level = BEEPVOL_MAX;
mixer_set_mixing_level( 2, level );
break;
default:
for( ch=0; ch<MIXER_MAX_CHANNELS ; ch++ ){
const char *name = mixer_get_name(ch);
if(name) printf( "%d[ch] %s\t:%d\n", ch,name,mixer_get_mixing_level(ch));
}
break;
}
return;
}
switch( ch ){
case XMAME_MIXER_PSG:
if( level < PSGVOL_MIN ) level = PSGVOL_MIN;
if( level > PSGVOL_MAX ) level = PSGVOL_MAX;
mixer_set_mixing_level( 0, level );
mixer_set_mixing_level( 1, level );
mixer_set_mixing_level( 2, level );
break;
case XMAME_MIXER_FM:
if( level < FMVOL_MIN ) level = FMVOL_MIN;
if( level > FMVOL_MAX ) level = FMVOL_MAX;
if( sound_board==SOUND_I ){
mixer_set_mixing_level( 3, level );
}else{
mixer_set_mixing_level( 3, level );
mixer_set_mixing_level( 4, level );
}
break;
case XMAME_MIXER_BEEP:
if( level < BEEPVOL_MIN ) level = BEEPVOL_MIN;
if( level > BEEPVOL_MAX ) level = BEEPVOL_MAX;
if( sound_board==SOUND_I ){
mixer_set_mixing_level( 4, level );
}else{
mixer_set_mixing_level( 5, level );
}
break;
case XMAME_MIXER_RHYTHM:
if( level < RHYTHMVOL_MIN ) level = RHYTHMVOL_MIN;
if( level > RHYTHMVOL_MAX ) level = RHYTHMVOL_MAX;
if( sound_board==SOUND_II ){
rhythmvol = level;
}
break;
case XMAME_MIXER_ADPCM:
if( level < ADPCMVOL_MIN ) level = ADPCMVOL_MIN;
if( level > ADPCMVOL_MAX ) level = ADPCMVOL_MAX;
if( sound_board==SOUND_II ){
adpcmvol = level;
}
break;
default:
for( ch=0; ch<MIXER_MAX_CHANNELS ; ch++ ){
const char *name = mixer_get_name(ch);
if(name) printf( "%d[ch] %s\t:%d\n", ch,name,mixer_get_mixing_level(ch));
}
break;
}
}