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