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Refined and optimized CD audio filter on AdLib Gold sound card

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This commit is contained in:
Ompronce
2022-01-20 17:43:31 -04:00
committed by GitHub
parent 415a98fa15
commit 5218fa0b19
1 changed files with 12 additions and 2 deletions
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14
src/sound/snd_adlibgold.c
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@@ -819,7 +819,17 @@ static void adgold_get_buffer(int32_t *buffer, int len, void *p)
free(adgold_buffer);
}
/*CD audio filter goes here*/
static void
adgold_filter_cd_audio(int channel, double *buffer, void *p)
{
adgold_t *adgold = (adgold_t *)p;
double c;
int aux = channel ? adgold->aux_vol_r : adgold->aux_vol_l;
int vol = channel ? adgold->vol_r : adgold->vol_l;
c = ((((*buffer) * aux) / 4096.0) * vol) / 4096.0;
*buffer = c;
}
static void adgold_input_msg(void *p, uint8_t *msg, uint32_t len)
@@ -926,7 +936,7 @@ void *adgold_init(const device_t *info)
sound_add_handler(adgold_get_buffer, adgold);
/*sound_set_cd_audio_filter(adgold_filter_cd_audio, adgold);*/
sound_set_cd_audio_filter(adgold_filter_cd_audio, adgold);
if (device_get_config_int("receive_input"))
midi_in_handler(1, adgold_input_msg, adgold_input_sysex, adgold);