1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
224 lines
6.9 KiB
C
224 lines
6.9 KiB
C
/*
|
|
* Copyright (c) by Uros Bizjak <uros@kss-loka.si>
|
|
*
|
|
* OPL2/OPL3/OPL4 FM routines for internal percussion channels
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include "opl3_voice.h"
|
|
|
|
extern char snd_opl3_regmap[MAX_OPL2_VOICES][4];
|
|
|
|
static char snd_opl3_drum_table[47] =
|
|
{
|
|
OPL3_BASSDRUM_ON, OPL3_BASSDRUM_ON, OPL3_HIHAT_ON, /* 35 - 37 */
|
|
OPL3_SNAREDRUM_ON, OPL3_HIHAT_ON, OPL3_SNAREDRUM_ON, /* 38 - 40 */
|
|
OPL3_BASSDRUM_ON, OPL3_HIHAT_ON, OPL3_BASSDRUM_ON, /* 41 - 43 */
|
|
OPL3_HIHAT_ON, OPL3_TOMTOM_ON, OPL3_HIHAT_ON, /* 44 - 46 */
|
|
OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_CYMBAL_ON, /* 47 - 49 */
|
|
|
|
OPL3_TOMTOM_ON, OPL3_CYMBAL_ON, OPL3_CYMBAL_ON, /* 50 - 52 */
|
|
OPL3_CYMBAL_ON, OPL3_CYMBAL_ON, OPL3_CYMBAL_ON, /* 53 - 55 */
|
|
OPL3_HIHAT_ON, OPL3_CYMBAL_ON, OPL3_TOMTOM_ON, /* 56 - 58 */
|
|
OPL3_CYMBAL_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 59 - 61 */
|
|
OPL3_HIHAT_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 62 - 64 */
|
|
|
|
OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 65 - 67 */
|
|
OPL3_TOMTOM_ON, OPL3_HIHAT_ON, OPL3_HIHAT_ON, /* 68 - 70 */
|
|
OPL3_HIHAT_ON, OPL3_HIHAT_ON, OPL3_TOMTOM_ON, /* 71 - 73 */
|
|
OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 74 - 76 */
|
|
OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, OPL3_TOMTOM_ON, /* 77 - 79 */
|
|
OPL3_CYMBAL_ON, OPL3_CYMBAL_ON /* 80 - 81 */
|
|
};
|
|
|
|
typedef struct snd_opl3_drum_voice {
|
|
int voice;
|
|
int op;
|
|
unsigned char am_vib;
|
|
unsigned char ksl_level;
|
|
unsigned char attack_decay;
|
|
unsigned char sustain_release;
|
|
unsigned char feedback_connection;
|
|
unsigned char wave_select;
|
|
} snd_opl3_drum_voice_t;
|
|
|
|
typedef struct snd_opl3_drum_note {
|
|
int voice;
|
|
unsigned char fnum;
|
|
unsigned char octave_f;
|
|
unsigned char feedback_connection;
|
|
} snd_opl3_drum_note_t;
|
|
|
|
static snd_opl3_drum_voice_t bass_op0 = {6, 0, 0x00, 0x32, 0xf8, 0x66, 0x30, 0x00};
|
|
static snd_opl3_drum_voice_t bass_op1 = {6, 1, 0x00, 0x03, 0xf6, 0x57, 0x30, 0x00};
|
|
static snd_opl3_drum_note_t bass_note = {6, 0x90, 0x09};
|
|
|
|
static snd_opl3_drum_voice_t hihat = {7, 0, 0x00, 0x03, 0xf0, 0x06, 0x20, 0x00};
|
|
|
|
static snd_opl3_drum_voice_t snare = {7, 1, 0x00, 0x03, 0xf0, 0x07, 0x20, 0x02};
|
|
static snd_opl3_drum_note_t snare_note = {7, 0xf4, 0x0d};
|
|
|
|
static snd_opl3_drum_voice_t tomtom = {8, 0, 0x02, 0x03, 0xf0, 0x06, 0x10, 0x00};
|
|
static snd_opl3_drum_note_t tomtom_note = {8, 0xf4, 0x09};
|
|
|
|
static snd_opl3_drum_voice_t cymbal = {8, 1, 0x04, 0x03, 0xf0, 0x06, 0x10, 0x00};
|
|
|
|
/*
|
|
* set drum voice characteristics
|
|
*/
|
|
static void snd_opl3_drum_voice_set(opl3_t *opl3, snd_opl3_drum_voice_t *data)
|
|
{
|
|
unsigned char op_offset = snd_opl3_regmap[data->voice][data->op];
|
|
unsigned char voice_offset = data->voice;
|
|
unsigned short opl3_reg;
|
|
|
|
/* Set OPL3 AM_VIB register */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_AM_VIB + op_offset);
|
|
opl3->command(opl3, opl3_reg, data->am_vib);
|
|
|
|
/* Set OPL3 KSL_LEVEL register */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_KSL_LEVEL + op_offset);
|
|
opl3->command(opl3, opl3_reg, data->ksl_level);
|
|
|
|
/* Set OPL3 ATTACK_DECAY register */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_ATTACK_DECAY + op_offset);
|
|
opl3->command(opl3, opl3_reg, data->attack_decay);
|
|
|
|
/* Set OPL3 SUSTAIN_RELEASE register */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_SUSTAIN_RELEASE + op_offset);
|
|
opl3->command(opl3, opl3_reg, data->sustain_release);
|
|
|
|
/* Set OPL3 FEEDBACK_CONNECTION register */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_FEEDBACK_CONNECTION + voice_offset);
|
|
opl3->command(opl3, opl3_reg, data->feedback_connection);
|
|
|
|
/* Select waveform */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_WAVE_SELECT + op_offset);
|
|
opl3->command(opl3, opl3_reg, data->wave_select);
|
|
}
|
|
|
|
/*
|
|
* Set drum voice pitch
|
|
*/
|
|
static void snd_opl3_drum_note_set(opl3_t *opl3, snd_opl3_drum_note_t *data)
|
|
{
|
|
unsigned char voice_offset = data->voice;
|
|
unsigned short opl3_reg;
|
|
|
|
/* Set OPL3 FNUM_LOW register */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_FNUM_LOW + voice_offset);
|
|
opl3->command(opl3, opl3_reg, data->fnum);
|
|
|
|
/* Set OPL3 KEYON_BLOCK register */
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_KEYON_BLOCK + voice_offset);
|
|
opl3->command(opl3, opl3_reg, data->octave_f);
|
|
}
|
|
|
|
/*
|
|
* Set drum voice volume and position
|
|
*/
|
|
static void snd_opl3_drum_vol_set(opl3_t *opl3, snd_opl3_drum_voice_t *data,
|
|
int vel, snd_midi_channel_t *chan)
|
|
{
|
|
unsigned char op_offset = snd_opl3_regmap[data->voice][data->op];
|
|
unsigned char voice_offset = data->voice;
|
|
unsigned char reg_val;
|
|
unsigned short opl3_reg;
|
|
|
|
/* Set OPL3 KSL_LEVEL register */
|
|
reg_val = data->ksl_level;
|
|
snd_opl3_calc_volume(®_val, vel, chan);
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_KSL_LEVEL + op_offset);
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
|
|
/* Set OPL3 FEEDBACK_CONNECTION register */
|
|
/* Set output voice connection */
|
|
reg_val = data->feedback_connection | OPL3_STEREO_BITS;
|
|
if (chan->gm_pan < 43)
|
|
reg_val &= ~OPL3_VOICE_TO_RIGHT;
|
|
if (chan->gm_pan > 85)
|
|
reg_val &= ~OPL3_VOICE_TO_LEFT;
|
|
opl3_reg = OPL3_LEFT | (OPL3_REG_FEEDBACK_CONNECTION + voice_offset);
|
|
opl3->command(opl3, opl3_reg, reg_val);
|
|
}
|
|
|
|
/*
|
|
* Loads drum voices at init time
|
|
*/
|
|
void snd_opl3_load_drums(opl3_t *opl3)
|
|
{
|
|
snd_opl3_drum_voice_set(opl3, &bass_op0);
|
|
snd_opl3_drum_voice_set(opl3, &bass_op1);
|
|
snd_opl3_drum_note_set(opl3, &bass_note);
|
|
|
|
snd_opl3_drum_voice_set(opl3, &hihat);
|
|
|
|
snd_opl3_drum_voice_set(opl3, &snare);
|
|
snd_opl3_drum_note_set(opl3, &snare_note);
|
|
|
|
snd_opl3_drum_voice_set(opl3, &tomtom);
|
|
snd_opl3_drum_note_set(opl3, &tomtom_note);
|
|
|
|
snd_opl3_drum_voice_set(opl3, &cymbal);
|
|
}
|
|
|
|
/*
|
|
* Switch drum voice on or off
|
|
*/
|
|
void snd_opl3_drum_switch(opl3_t *opl3, int note, int vel, int on_off,
|
|
snd_midi_channel_t *chan)
|
|
{
|
|
unsigned char drum_mask;
|
|
snd_opl3_drum_voice_t *drum_voice;
|
|
|
|
if (!(opl3->drum_reg & OPL3_PERCUSSION_ENABLE))
|
|
return;
|
|
|
|
if ((note < 35) || (note > 81))
|
|
return;
|
|
drum_mask = snd_opl3_drum_table[note - 35];
|
|
|
|
if (on_off) {
|
|
switch (drum_mask) {
|
|
case OPL3_BASSDRUM_ON:
|
|
drum_voice = &bass_op1;
|
|
break;
|
|
case OPL3_HIHAT_ON:
|
|
drum_voice = &hihat;
|
|
break;
|
|
case OPL3_SNAREDRUM_ON:
|
|
drum_voice = &snare;
|
|
break;
|
|
case OPL3_TOMTOM_ON:
|
|
drum_voice = &tomtom;
|
|
break;
|
|
case OPL3_CYMBAL_ON:
|
|
drum_voice = &cymbal;
|
|
break;
|
|
default:
|
|
drum_voice = &tomtom;
|
|
}
|
|
|
|
snd_opl3_drum_vol_set(opl3, drum_voice, vel, chan);
|
|
opl3->drum_reg |= drum_mask;
|
|
} else {
|
|
opl3->drum_reg &= ~drum_mask;
|
|
}
|
|
opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION,
|
|
opl3->drum_reg);
|
|
}
|