384 lines
9.1 KiB
C
384 lines
9.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* NRPN / SYSEX callbacks for Emu8k/Emu10k1
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*
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* Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
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*/
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#include "emux_voice.h"
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#include <sound/asoundef.h>
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/*
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* conversion from NRPN/control parameters to Emu8000 raw parameters
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*/
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/* NRPN / CC -> Emu8000 parameter converter */
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struct nrpn_conv_table {
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int control;
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int effect;
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int (*convert)(int val);
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};
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/* effect sensitivity */
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#define FX_CUTOFF 0
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#define FX_RESONANCE 1
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#define FX_ATTACK 2
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#define FX_RELEASE 3
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#define FX_VIBRATE 4
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#define FX_VIBDEPTH 5
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#define FX_VIBDELAY 6
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#define FX_NUMS 7
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/*
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* convert NRPN/control values
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*/
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static int send_converted_effect(const struct nrpn_conv_table *table,
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int num_tables,
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struct snd_emux_port *port,
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struct snd_midi_channel *chan,
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int type, int val, int mode)
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{
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int i, cval;
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for (i = 0; i < num_tables; i++) {
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if (table[i].control == type) {
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cval = table[i].convert(val);
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snd_emux_send_effect(port, chan, table[i].effect,
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cval, mode);
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return 1;
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}
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}
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return 0;
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}
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#define DEF_FX_CUTOFF 170
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#define DEF_FX_RESONANCE 6
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#define DEF_FX_ATTACK 50
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#define DEF_FX_RELEASE 50
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#define DEF_FX_VIBRATE 30
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#define DEF_FX_VIBDEPTH 4
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#define DEF_FX_VIBDELAY 1500
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/* effect sensitivities for GS NRPN:
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* adjusted for chaos 8MB soundfonts
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*/
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static const int gs_sense[] =
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{
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DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
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DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
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};
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/* effect sensitivities for XG controls:
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* adjusted for chaos 8MB soundfonts
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*/
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static const int xg_sense[] =
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{
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DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
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DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
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};
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/*
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* AWE32 NRPN effects
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*/
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static int fx_delay(int val);
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static int fx_attack(int val);
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static int fx_hold(int val);
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static int fx_decay(int val);
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static int fx_the_value(int val);
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static int fx_twice_value(int val);
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static int fx_conv_pitch(int val);
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static int fx_conv_Q(int val);
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/* function for each NRPN */ /* [range] units */
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#define fx_env1_delay fx_delay /* [0,5900] 4msec */
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#define fx_env1_attack fx_attack /* [0,5940] 1msec */
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#define fx_env1_hold fx_hold /* [0,8191] 1msec */
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#define fx_env1_decay fx_decay /* [0,5940] 4msec */
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#define fx_env1_release fx_decay /* [0,5940] 4msec */
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#define fx_env1_sustain fx_the_value /* [0,127] 0.75dB */
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#define fx_env1_pitch fx_the_value /* [-127,127] 9.375cents */
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#define fx_env1_cutoff fx_the_value /* [-127,127] 56.25cents */
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#define fx_env2_delay fx_delay /* [0,5900] 4msec */
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#define fx_env2_attack fx_attack /* [0,5940] 1msec */
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#define fx_env2_hold fx_hold /* [0,8191] 1msec */
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#define fx_env2_decay fx_decay /* [0,5940] 4msec */
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#define fx_env2_release fx_decay /* [0,5940] 4msec */
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#define fx_env2_sustain fx_the_value /* [0,127] 0.75dB */
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#define fx_lfo1_delay fx_delay /* [0,5900] 4msec */
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#define fx_lfo1_freq fx_twice_value /* [0,127] 84mHz */
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#define fx_lfo1_volume fx_twice_value /* [0,127] 0.1875dB */
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#define fx_lfo1_pitch fx_the_value /* [-127,127] 9.375cents */
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#define fx_lfo1_cutoff fx_twice_value /* [-64,63] 56.25cents */
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#define fx_lfo2_delay fx_delay /* [0,5900] 4msec */
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#define fx_lfo2_freq fx_twice_value /* [0,127] 84mHz */
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#define fx_lfo2_pitch fx_the_value /* [-127,127] 9.375cents */
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#define fx_init_pitch fx_conv_pitch /* [-8192,8192] cents */
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#define fx_chorus fx_the_value /* [0,255] -- */
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#define fx_reverb fx_the_value /* [0,255] -- */
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#define fx_cutoff fx_twice_value /* [0,127] 62Hz */
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#define fx_filterQ fx_conv_Q /* [0,127] -- */
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static int fx_delay(int val)
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{
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return (unsigned short)snd_sf_calc_parm_delay(val);
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}
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static int fx_attack(int val)
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{
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return (unsigned short)snd_sf_calc_parm_attack(val);
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}
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static int fx_hold(int val)
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{
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return (unsigned short)snd_sf_calc_parm_hold(val);
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}
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static int fx_decay(int val)
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{
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return (unsigned short)snd_sf_calc_parm_decay(val);
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}
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static int fx_the_value(int val)
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{
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return (unsigned short)(val & 0xff);
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}
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static int fx_twice_value(int val)
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{
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return (unsigned short)((val * 2) & 0xff);
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}
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static int fx_conv_pitch(int val)
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{
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return (short)(val * 4096 / 1200);
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}
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static int fx_conv_Q(int val)
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{
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return (unsigned short)((val / 8) & 0xff);
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}
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static const struct nrpn_conv_table awe_effects[] =
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{
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{ 0, EMUX_FX_LFO1_DELAY, fx_lfo1_delay},
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{ 1, EMUX_FX_LFO1_FREQ, fx_lfo1_freq},
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{ 2, EMUX_FX_LFO2_DELAY, fx_lfo2_delay},
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{ 3, EMUX_FX_LFO2_FREQ, fx_lfo2_freq},
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{ 4, EMUX_FX_ENV1_DELAY, fx_env1_delay},
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{ 5, EMUX_FX_ENV1_ATTACK,fx_env1_attack},
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{ 6, EMUX_FX_ENV1_HOLD, fx_env1_hold},
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{ 7, EMUX_FX_ENV1_DECAY, fx_env1_decay},
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{ 8, EMUX_FX_ENV1_SUSTAIN, fx_env1_sustain},
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{ 9, EMUX_FX_ENV1_RELEASE, fx_env1_release},
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{10, EMUX_FX_ENV2_DELAY, fx_env2_delay},
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{11, EMUX_FX_ENV2_ATTACK, fx_env2_attack},
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{12, EMUX_FX_ENV2_HOLD, fx_env2_hold},
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{13, EMUX_FX_ENV2_DECAY, fx_env2_decay},
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{14, EMUX_FX_ENV2_SUSTAIN, fx_env2_sustain},
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{15, EMUX_FX_ENV2_RELEASE, fx_env2_release},
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{16, EMUX_FX_INIT_PITCH, fx_init_pitch},
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{17, EMUX_FX_LFO1_PITCH, fx_lfo1_pitch},
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{18, EMUX_FX_LFO2_PITCH, fx_lfo2_pitch},
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{19, EMUX_FX_ENV1_PITCH, fx_env1_pitch},
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{20, EMUX_FX_LFO1_VOLUME, fx_lfo1_volume},
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{21, EMUX_FX_CUTOFF, fx_cutoff},
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{22, EMUX_FX_FILTERQ, fx_filterQ},
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{23, EMUX_FX_LFO1_CUTOFF, fx_lfo1_cutoff},
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{24, EMUX_FX_ENV1_CUTOFF, fx_env1_cutoff},
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{25, EMUX_FX_CHORUS, fx_chorus},
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{26, EMUX_FX_REVERB, fx_reverb},
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};
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/*
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* GS(SC88) NRPN effects; still experimental
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*/
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/* cutoff: quarter semitone step, max=255 */
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static int gs_cutoff(int val)
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{
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return (val - 64) * gs_sense[FX_CUTOFF] / 50;
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}
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/* resonance: 0 to 15(max) */
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static int gs_filterQ(int val)
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{
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return (val - 64) * gs_sense[FX_RESONANCE] / 50;
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}
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/* attack: */
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static int gs_attack(int val)
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{
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return -(val - 64) * gs_sense[FX_ATTACK] / 50;
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}
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/* decay: */
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static int gs_decay(int val)
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{
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return -(val - 64) * gs_sense[FX_RELEASE] / 50;
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}
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/* release: */
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static int gs_release(int val)
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{
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return -(val - 64) * gs_sense[FX_RELEASE] / 50;
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}
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/* vibrato freq: 0.042Hz step, max=255 */
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static int gs_vib_rate(int val)
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{
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return (val - 64) * gs_sense[FX_VIBRATE] / 50;
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}
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/* vibrato depth: max=127, 1 octave */
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static int gs_vib_depth(int val)
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{
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return (val - 64) * gs_sense[FX_VIBDEPTH] / 50;
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}
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/* vibrato delay: -0.725msec step */
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static int gs_vib_delay(int val)
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{
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return -(val - 64) * gs_sense[FX_VIBDELAY] / 50;
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}
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static const struct nrpn_conv_table gs_effects[] =
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{
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{32, EMUX_FX_CUTOFF, gs_cutoff},
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{33, EMUX_FX_FILTERQ, gs_filterQ},
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{99, EMUX_FX_ENV2_ATTACK, gs_attack},
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{100, EMUX_FX_ENV2_DECAY, gs_decay},
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{102, EMUX_FX_ENV2_RELEASE, gs_release},
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{8, EMUX_FX_LFO1_FREQ, gs_vib_rate},
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{9, EMUX_FX_LFO1_VOLUME, gs_vib_depth},
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{10, EMUX_FX_LFO1_DELAY, gs_vib_delay},
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};
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/*
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* NRPN events
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*/
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void
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snd_emux_nrpn(void *p, struct snd_midi_channel *chan,
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struct snd_midi_channel_set *chset)
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{
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struct snd_emux_port *port;
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port = p;
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if (snd_BUG_ON(!port || !chan))
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return;
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if (chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB] == 127 &&
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chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB] <= 26) {
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int val;
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/* Win/DOS AWE32 specific NRPNs */
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/* both MSB/LSB necessary */
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val = (chan->control[MIDI_CTL_MSB_DATA_ENTRY] << 7) |
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chan->control[MIDI_CTL_LSB_DATA_ENTRY];
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val -= 8192;
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send_converted_effect
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(awe_effects, ARRAY_SIZE(awe_effects),
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port, chan, chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB],
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val, EMUX_FX_FLAG_SET);
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return;
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}
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if (port->chset.midi_mode == SNDRV_MIDI_MODE_GS &&
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chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB] == 1) {
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int val;
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/* GS specific NRPNs */
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/* only MSB is valid */
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val = chan->control[MIDI_CTL_MSB_DATA_ENTRY];
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send_converted_effect
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(gs_effects, ARRAY_SIZE(gs_effects),
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port, chan, chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB],
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val, EMUX_FX_FLAG_ADD);
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return;
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}
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}
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/*
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* XG control effects; still experimental
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*/
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/* cutoff: quarter semitone step, max=255 */
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static int xg_cutoff(int val)
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{
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return (val - 64) * xg_sense[FX_CUTOFF] / 64;
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}
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/* resonance: 0(open) to 15(most nasal) */
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static int xg_filterQ(int val)
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{
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return (val - 64) * xg_sense[FX_RESONANCE] / 64;
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}
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/* attack: */
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static int xg_attack(int val)
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{
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return -(val - 64) * xg_sense[FX_ATTACK] / 64;
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}
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/* release: */
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static int xg_release(int val)
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{
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return -(val - 64) * xg_sense[FX_RELEASE] / 64;
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}
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static const struct nrpn_conv_table xg_effects[] =
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{
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{71, EMUX_FX_CUTOFF, xg_cutoff},
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{74, EMUX_FX_FILTERQ, xg_filterQ},
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{72, EMUX_FX_ENV2_RELEASE, xg_release},
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{73, EMUX_FX_ENV2_ATTACK, xg_attack},
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};
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int
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snd_emux_xg_control(struct snd_emux_port *port, struct snd_midi_channel *chan,
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int param)
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{
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return send_converted_effect(xg_effects, ARRAY_SIZE(xg_effects),
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port, chan, param,
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chan->control[param],
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EMUX_FX_FLAG_ADD);
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}
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/*
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* receive sysex
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*/
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void
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snd_emux_sysex(void *p, unsigned char *buf, int len, int parsed,
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struct snd_midi_channel_set *chset)
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{
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struct snd_emux_port *port;
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struct snd_emux *emu;
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port = p;
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if (snd_BUG_ON(!port || !chset))
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return;
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emu = port->emu;
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switch (parsed) {
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case SNDRV_MIDI_SYSEX_GS_MASTER_VOLUME:
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snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME);
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break;
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default:
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if (emu->ops.sysex)
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emu->ops.sysex(emu, buf, len, parsed, chset);
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break;
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}
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}
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