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Cleanup: miscellaneous

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This commit is contained in:
Kagamiin~
2024-03-23 12:22:11 -03:00
parent 639f05d07c
commit 6c519904fd
5 changed files with 47 additions and 48 deletions
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52
src/sound/snd_sb.c
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@@ -89,6 +89,11 @@ static const double sb_att_2dbstep_4bits[] = {
164.0, 1304.0, 1641.0, 2067.0, 2602.0, 3276.0, 4125.0, 5192.0,
6537.0, 8230.0, 10362.0, 13044.0, 16422.0, 20674.0, 26027.0, 32767.0
};
/* Attenuation table for ESS 3-bit PC speaker volume. */
static const double sb_att_3dbstep_3bits[] = {
0.0, 4125.0, 5826.0, 8230.0, 11626.0, 16422.0, 23197.0, 32767.0
};
// clang-format on
static const uint16_t sb_mcv_addr[8] = { 0x200, 0x210, 0x220, 0x230, 0x240, 0x250, 0x260, 0x270 };
@@ -730,12 +735,10 @@ sb_get_music_buffer_ess(int32_t *buffer, int len, void *priv)
out_l = 0.0;
out_r = 0.0;
{
out_l = (((double) opl_buf[c]) * mixer->fm_l) * 0.7171630859375;
out_r = (((double) opl_buf[c + 1]) * mixer->fm_r) * 0.7171630859375;
if (ess->opl_mix && ess->opl_mixer)
ess->opl_mix(ess->opl_mixer, &out_l, &out_r);
}
out_l = (((double) opl_buf[c]) * mixer->fm_l) * 0.7171630859375;
out_r = (((double) opl_buf[c + 1]) * mixer->fm_r) * 0.7171630859375;
if (ess->opl_mix && ess->opl_mixer)
ess->opl_mix(ess->opl_mixer, &out_l, &out_r);
/* TODO: recording from the mixer. */
out_l *= mixer->master_l;
@@ -1421,11 +1424,12 @@ ess_mixer_write(uint16_t addr, uint8_t val, void *priv)
mixer->regs[0x26] = mixer->regs[0x28] = 0xee;
mixer->regs[0x2e] = 0x00;
/* Initialize ESS regs. */
mixer->regs[0x14] = mixer->regs[0x32] = 0x88;
mixer->regs[0x36] = 0x88;
mixer->regs[0x38] = 0x88;
/* Initialize ESS regs
* Defaulting to 0dB instead of the standard -11dB. */
mixer->regs[0x14] = mixer->regs[0x32] = 0xff;
mixer->regs[0x36] = mixer->regs[0x38] = 0xff;
mixer->regs[0x3a] = 0x00;
mixer->regs[0x3c] = 0x05;
mixer->regs[0x3e] = 0x00;
sb_dsp_set_stereo(&ess->dsp, mixer->regs[0x0e] & 2);
@@ -1460,6 +1464,14 @@ ess_mixer_write(uint16_t addr, uint8_t val, void *priv)
mixer->input_selector = INPUT_MIC;
break;
}
mixer->input_filter = !(mixer->regs[0xC] & 0x20);
mixer->in_filter_freq = ((mixer->regs[0xC] & 0x8) == 0) ? 3200 : 8800;
break;
case 0x0E:
mixer->output_filter = !(mixer->regs[0xE] & 0x20);
mixer->stereo = mixer->regs[0xE] & 2;
sb_dsp_set_stereo(&ess->dsp, val & 2);
break;
case 0x14:
@@ -1495,8 +1507,6 @@ ess_mixer_write(uint16_t addr, uint8_t val, void *priv)
SoundBlaster Pro selects register 020h for 030h, 022h for 032h,
026h for 036h, and 028h for 038h. */
case 0x30:
mixer->regs[mixer->index - 0x10] = (val & 0xee);
break;
case 0x32:
case 0x36:
case 0x38:
@@ -1505,15 +1515,13 @@ ess_mixer_write(uint16_t addr, uint8_t val, void *priv)
break;
case 0x3a:
case 0x3c:
break;
case 0x00:
case 0x04:
break;
case 0x0e:
break;
case 0x64:
mixer->regs[mixer->index] &= ~0x8;
break;
@@ -1587,19 +1595,13 @@ ess_mixer_write(uint16_t addr, uint8_t val, void *priv)
mixer->fm_r = sb_att_2dbstep_4bits[mixer->regs[0x36] & 0x0F] / 32767.0;
mixer->cd_l = sb_att_2dbstep_4bits[(mixer->regs[0x38] >> 4) & 0x0F] / 32767.0;
mixer->cd_r = sb_att_2dbstep_4bits[mixer->regs[0x38] & 0x0F] / 32767.0;
mixer->line_l = sb_att_2dbstep_4bits[(mixer->regs[0x3e] >> 4) & 0x0F] / 32767.0;
mixer->line_r = sb_att_2dbstep_4bits[mixer->regs[0x3e] & 0x0F] / 32767.0;
mixer->auxb_l = sb_att_2dbstep_4bits[(mixer->regs[0x3a] >> 4) & 0x0F] / 32767.0;
mixer->auxb_r = sb_att_2dbstep_4bits[mixer->regs[0x3a] & 0x0F] / 32767.0;
mixer->line_l = sb_att_2dbstep_4bits[(mixer->regs[0x3e] >> 4) & 0x0F] / 32767.0;
mixer->line_r = sb_att_2dbstep_4bits[mixer->regs[0x3e] & 0x0F] / 32767.0;
mixer->speaker = sb_att_3dbstep_3bits[mixer->regs[0x3c] & 0x07] / 32767.0;
mixer->output_filter = !(mixer->regs[0xe] & 0x20);
mixer->input_filter = !(mixer->regs[0xc] & 0x20);
mixer->in_filter_freq = ((mixer->regs[0xc] & 0x8) == 0) ? 3200 : 8800;
mixer->stereo = mixer->regs[0xe] & 2;
if (mixer->index == 0xe)
sb_dsp_set_stereo(&ess->dsp, val & 2);
/* TODO: pcspeaker volume? Or is it not worth? */
/* TODO: PC Speaker volume */
}
}