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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Midi synth routines for the Emu8k/Emu10k1
4 *
5 * Copyright (C) 1999 Steve Ratcliffe
6 * Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
7 *
8 * Contains code based on awe_wave.c by Takashi Iwai
9 */
10
11#include "emux_voice.h"
12#include <linux/slab.h>
13
14#ifdef SNDRV_EMUX_USE_RAW_EFFECT
15/*
16 * effects table
17 */
18
19#define xoffsetof(type,tag) ((long)(&((type)NULL)->tag) - (long)(NULL))
20
21#define parm_offset(tag) xoffsetof(struct soundfont_voice_parm *, tag)
22
23#define PARM_IS_BYTE (1 << 0)
24#define PARM_IS_WORD (1 << 1)
25#define PARM_IS_ALIGNED (3 << 2)
26#define PARM_IS_ALIGN_HI (1 << 2)
27#define PARM_IS_ALIGN_LO (2 << 2)
28#define PARM_IS_SIGNED (1 << 4)
29
30#define PARM_WORD (PARM_IS_WORD)
31#define PARM_BYTE_LO (PARM_IS_BYTE|PARM_IS_ALIGN_LO)
32#define PARM_BYTE_HI (PARM_IS_BYTE|PARM_IS_ALIGN_HI)
33#define PARM_BYTE (PARM_IS_BYTE)
34#define PARM_SIGN_LO (PARM_IS_BYTE|PARM_IS_ALIGN_LO|PARM_IS_SIGNED)
35#define PARM_SIGN_HI (PARM_IS_BYTE|PARM_IS_ALIGN_HI|PARM_IS_SIGNED)
36
37static struct emux_parm_defs {
38 int type; /* byte or word */
39 int low, high; /* value range */
40 long offset; /* offset in parameter record (-1 = not written) */
41 int update; /* flgas for real-time update */
42} parm_defs[EMUX_NUM_EFFECTS] = {
43 {PARM_WORD, 0, 0x8000, parm_offset(moddelay), 0}, /* env1 delay */
44 {PARM_BYTE_LO, 1, 0x80, parm_offset(modatkhld), 0}, /* env1 attack */
45 {PARM_BYTE_HI, 0, 0x7e, parm_offset(modatkhld), 0}, /* env1 hold */
46 {PARM_BYTE_LO, 1, 0x7f, parm_offset(moddcysus), 0}, /* env1 decay */
47 {PARM_BYTE_LO, 1, 0x7f, parm_offset(modrelease), 0}, /* env1 release */
48 {PARM_BYTE_HI, 0, 0x7f, parm_offset(moddcysus), 0}, /* env1 sustain */
49 {PARM_BYTE_HI, 0, 0xff, parm_offset(pefe), 0}, /* env1 pitch */
50 {PARM_BYTE_LO, 0, 0xff, parm_offset(pefe), 0}, /* env1 fc */
51
52 {PARM_WORD, 0, 0x8000, parm_offset(voldelay), 0}, /* env2 delay */
53 {PARM_BYTE_LO, 1, 0x80, parm_offset(volatkhld), 0}, /* env2 attack */
54 {PARM_BYTE_HI, 0, 0x7e, parm_offset(volatkhld), 0}, /* env2 hold */
55 {PARM_BYTE_LO, 1, 0x7f, parm_offset(voldcysus), 0}, /* env2 decay */
56 {PARM_BYTE_LO, 1, 0x7f, parm_offset(volrelease), 0}, /* env2 release */
57 {PARM_BYTE_HI, 0, 0x7f, parm_offset(voldcysus), 0}, /* env2 sustain */
58
59 {PARM_WORD, 0, 0x8000, parm_offset(lfo1delay), 0}, /* lfo1 delay */
60 {PARM_BYTE_LO, 0, 0xff, parm_offset(tremfrq), SNDRV_EMUX_UPDATE_TREMFREQ}, /* lfo1 freq */
61 {PARM_SIGN_HI, -128, 127, parm_offset(tremfrq), SNDRV_EMUX_UPDATE_TREMFREQ}, /* lfo1 vol */
62 {PARM_SIGN_HI, -128, 127, parm_offset(fmmod), SNDRV_EMUX_UPDATE_FMMOD}, /* lfo1 pitch */
63 {PARM_BYTE_LO, 0, 0xff, parm_offset(fmmod), SNDRV_EMUX_UPDATE_FMMOD}, /* lfo1 cutoff */
64
65 {PARM_WORD, 0, 0x8000, parm_offset(lfo2delay), 0}, /* lfo2 delay */
66 {PARM_BYTE_LO, 0, 0xff, parm_offset(fm2frq2), SNDRV_EMUX_UPDATE_FM2FRQ2}, /* lfo2 freq */
67 {PARM_SIGN_HI, -128, 127, parm_offset(fm2frq2), SNDRV_EMUX_UPDATE_FM2FRQ2}, /* lfo2 pitch */
68
69 {PARM_WORD, 0, 0xffff, -1, SNDRV_EMUX_UPDATE_PITCH}, /* initial pitch */
70 {PARM_BYTE, 0, 0xff, parm_offset(chorus), 0}, /* chorus */
71 {PARM_BYTE, 0, 0xff, parm_offset(reverb), 0}, /* reverb */
72 {PARM_BYTE, 0, 0xff, parm_offset(cutoff), SNDRV_EMUX_UPDATE_VOLUME}, /* cutoff */
73 {PARM_BYTE, 0, 15, parm_offset(filterQ), SNDRV_EMUX_UPDATE_Q}, /* resonance */
74
75 {PARM_WORD, 0, 0xffff, -1, 0}, /* sample start */
76 {PARM_WORD, 0, 0xffff, -1, 0}, /* loop start */
77 {PARM_WORD, 0, 0xffff, -1, 0}, /* loop end */
78 {PARM_WORD, 0, 0xffff, -1, 0}, /* coarse sample start */
79 {PARM_WORD, 0, 0xffff, -1, 0}, /* coarse loop start */
80 {PARM_WORD, 0, 0xffff, -1, 0}, /* coarse loop end */
81 {PARM_BYTE, 0, 0xff, -1, SNDRV_EMUX_UPDATE_VOLUME}, /* initial attenuation */
82};
83
84/* set byte effect value */
85static void
86effect_set_byte(unsigned char *valp, struct snd_midi_channel *chan, int type)
87{
88 short effect;
89 struct snd_emux_effect_table *fx = chan->private;
90
91 effect = fx->val[type];
92 if (fx->flag[type] == EMUX_FX_FLAG_ADD) {
93 if (parm_defs[type].type & PARM_IS_SIGNED)
94 effect += *(char*)valp;
95 else
96 effect += *valp;
97 }
98 if (effect < parm_defs[type].low)
99 effect = parm_defs[type].low;
100 else if (effect > parm_defs[type].high)
101 effect = parm_defs[type].high;
102 *valp = (unsigned char)effect;
103}
104
105/* set word effect value */
106static void
107effect_set_word(unsigned short *valp, struct snd_midi_channel *chan, int type)
108{
109 int effect;
110 struct snd_emux_effect_table *fx = chan->private;
111
112 effect = *(unsigned short*)&fx->val[type];
113 if (fx->flag[type] == EMUX_FX_FLAG_ADD)
114 effect += *valp;
115 if (effect < parm_defs[type].low)
116 effect = parm_defs[type].low;
117 else if (effect > parm_defs[type].high)
118 effect = parm_defs[type].high;
119 *valp = (unsigned short)effect;
120}
121
122/* address offset */
123static int
124effect_get_offset(struct snd_midi_channel *chan, int lo, int hi, int mode)
125{
126 int addr = 0;
127 struct snd_emux_effect_table *fx = chan->private;
128
129 if (fx->flag[hi])
130 addr = (short)fx->val[hi];
131 addr = addr << 15;
132 if (fx->flag[lo])
133 addr += (short)fx->val[lo];
134 if (!(mode & SNDRV_SFNT_SAMPLE_8BITS))
135 addr /= 2;
136 return addr;
137}
138
139#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
140/* change effects - for OSS sequencer compatibility */
141void
142snd_emux_send_effect_oss(struct snd_emux_port *port,
143 struct snd_midi_channel *chan, int type, int val)
144{
145 int mode;
146
147 if (type & 0x40)
148 mode = EMUX_FX_FLAG_OFF;
149 else if (type & 0x80)
150 mode = EMUX_FX_FLAG_ADD;
151 else
152 mode = EMUX_FX_FLAG_SET;
153 type &= 0x3f;
154
155 snd_emux_send_effect(port, chan, type, val, mode);
156}
157#endif
158
159/* Modify the effect value.
160 * if update is necessary, call emu8000_control
161 */
162void
163snd_emux_send_effect(struct snd_emux_port *port, struct snd_midi_channel *chan,
164 int type, int val, int mode)
165{
166 int i;
167 int offset;
168 unsigned char *srcp, *origp;
169 struct snd_emux *emu;
170 struct snd_emux_effect_table *fx;
171 unsigned long flags;
172
173 emu = port->emu;
174 fx = chan->private;
175 if (emu == NULL || fx == NULL)
176 return;
177 if (type < 0 || type >= EMUX_NUM_EFFECTS)
178 return;
179
180 fx->val[type] = val;
181 fx->flag[type] = mode;
182
183 /* do we need to modify the register in realtime ? */
184 if (!parm_defs[type].update)
185 return;
186 offset = parm_defs[type].offset;
187 if (offset < 0)
188 return;
189
190#ifdef SNDRV_LITTLE_ENDIAN
191 if (parm_defs[type].type & PARM_IS_ALIGN_HI)
192 offset++;
193#else
194 if (parm_defs[type].type & PARM_IS_ALIGN_LO)
195 offset++;
196#endif
197 /* modify the register values */
198 spin_lock_irqsave(&emu->voice_lock, flags);
199 for (i = 0; i < emu->max_voices; i++) {
200 struct snd_emux_voice *vp = &emu->voices[i];
201 if (!STATE_IS_PLAYING(vp->state) || vp->chan != chan)
202 continue;
203 srcp = (unsigned char*)&vp->reg.parm + offset;
204 origp = (unsigned char*)&vp->zone->v.parm + offset;
205 if (parm_defs[i].type & PARM_IS_BYTE) {
206 *srcp = *origp;
207 effect_set_byte(srcp, chan, type);
208 } else {
209 *(unsigned short*)srcp = *(unsigned short*)origp;
210 effect_set_word((unsigned short*)srcp, chan, type);
211 }
212 }
213 spin_unlock_irqrestore(&emu->voice_lock, flags);
214
215 /* activate them */
216 snd_emux_update_channel(port, chan, parm_defs[type].update);
217}
218
219
220/* copy wavetable registers to voice table */
221void
222snd_emux_setup_effect(struct snd_emux_voice *vp)
223{
224 struct snd_midi_channel *chan = vp->chan;
225 struct snd_emux_effect_table *fx;
226 unsigned char *srcp;
227 int i;
228
229 fx = chan->private;
230 if (!fx)
231 return;
232
233 /* modify the register values via effect table */
234 for (i = 0; i < EMUX_FX_END; i++) {
235 int offset;
236 if (!fx->flag[i])
237 continue;
238 offset = parm_defs[i].offset;
239 if (offset < 0)
240 continue;
241#ifdef SNDRV_LITTLE_ENDIAN
242 if (parm_defs[i].type & PARM_IS_ALIGN_HI)
243 offset++;
244#else
245 if (parm_defs[i].type & PARM_IS_ALIGN_LO)
246 offset++;
247#endif
248 srcp = (unsigned char*)&vp->reg.parm + offset;
249 if (parm_defs[i].type & PARM_IS_BYTE)
250 effect_set_byte(srcp, chan, i);
251 else
252 effect_set_word((unsigned short*)srcp, chan, i);
253 }
254
255 /* correct sample and loop points */
256 vp->reg.start += effect_get_offset(chan, EMUX_FX_SAMPLE_START,
257 EMUX_FX_COARSE_SAMPLE_START,
258 vp->reg.sample_mode);
259
260 vp->reg.loopstart += effect_get_offset(chan, EMUX_FX_LOOP_START,
261 EMUX_FX_COARSE_LOOP_START,
262 vp->reg.sample_mode);
263
264 vp->reg.loopend += effect_get_offset(chan, EMUX_FX_LOOP_END,
265 EMUX_FX_COARSE_LOOP_END,
266 vp->reg.sample_mode);
267}
268
269/*
270 * effect table
271 */
272void
273snd_emux_create_effect(struct snd_emux_port *p)
274{
275 int i;
276 p->effect = kcalloc(p->chset.max_channels,
277 sizeof(struct snd_emux_effect_table), GFP_KERNEL);
278 if (p->effect) {
279 for (i = 0; i < p->chset.max_channels; i++)
280 p->chset.channels[i].private = p->effect + i;
281 } else {
282 for (i = 0; i < p->chset.max_channels; i++)
283 p->chset.channels[i].private = NULL;
284 }
285}
286
287void
288snd_emux_delete_effect(struct snd_emux_port *p)
289{
290 kfree(p->effect);
291 p->effect = NULL;
292}
293
294void
295snd_emux_clear_effect(struct snd_emux_port *p)
296{
297 if (p->effect) {
298 memset(p->effect, 0, sizeof(struct snd_emux_effect_table) *
299 p->chset.max_channels);
300 }
301}
302
303#endif /* SNDRV_EMUX_USE_RAW_EFFECT */
1/*
2 * Midi synth routines for the Emu8k/Emu10k1
3 *
4 * Copyright (C) 1999 Steve Ratcliffe
5 * Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
6 *
7 * Contains code based on awe_wave.c by Takashi Iwai
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24
25#include "emux_voice.h"
26#include <linux/slab.h>
27
28#ifdef SNDRV_EMUX_USE_RAW_EFFECT
29/*
30 * effects table
31 */
32
33#define xoffsetof(type,tag) ((long)(&((type)NULL)->tag) - (long)(NULL))
34
35#define parm_offset(tag) xoffsetof(struct soundfont_voice_parm *, tag)
36
37#define PARM_IS_BYTE (1 << 0)
38#define PARM_IS_WORD (1 << 1)
39#define PARM_IS_ALIGNED (3 << 2)
40#define PARM_IS_ALIGN_HI (1 << 2)
41#define PARM_IS_ALIGN_LO (2 << 2)
42#define PARM_IS_SIGNED (1 << 4)
43
44#define PARM_WORD (PARM_IS_WORD)
45#define PARM_BYTE_LO (PARM_IS_BYTE|PARM_IS_ALIGN_LO)
46#define PARM_BYTE_HI (PARM_IS_BYTE|PARM_IS_ALIGN_HI)
47#define PARM_BYTE (PARM_IS_BYTE)
48#define PARM_SIGN_LO (PARM_IS_BYTE|PARM_IS_ALIGN_LO|PARM_IS_SIGNED)
49#define PARM_SIGN_HI (PARM_IS_BYTE|PARM_IS_ALIGN_HI|PARM_IS_SIGNED)
50
51static struct emux_parm_defs {
52 int type; /* byte or word */
53 int low, high; /* value range */
54 long offset; /* offset in parameter record (-1 = not written) */
55 int update; /* flgas for real-time update */
56} parm_defs[EMUX_NUM_EFFECTS] = {
57 {PARM_WORD, 0, 0x8000, parm_offset(moddelay), 0}, /* env1 delay */
58 {PARM_BYTE_LO, 1, 0x80, parm_offset(modatkhld), 0}, /* env1 attack */
59 {PARM_BYTE_HI, 0, 0x7e, parm_offset(modatkhld), 0}, /* env1 hold */
60 {PARM_BYTE_LO, 1, 0x7f, parm_offset(moddcysus), 0}, /* env1 decay */
61 {PARM_BYTE_LO, 1, 0x7f, parm_offset(modrelease), 0}, /* env1 release */
62 {PARM_BYTE_HI, 0, 0x7f, parm_offset(moddcysus), 0}, /* env1 sustain */
63 {PARM_BYTE_HI, 0, 0xff, parm_offset(pefe), 0}, /* env1 pitch */
64 {PARM_BYTE_LO, 0, 0xff, parm_offset(pefe), 0}, /* env1 fc */
65
66 {PARM_WORD, 0, 0x8000, parm_offset(voldelay), 0}, /* env2 delay */
67 {PARM_BYTE_LO, 1, 0x80, parm_offset(volatkhld), 0}, /* env2 attack */
68 {PARM_BYTE_HI, 0, 0x7e, parm_offset(volatkhld), 0}, /* env2 hold */
69 {PARM_BYTE_LO, 1, 0x7f, parm_offset(voldcysus), 0}, /* env2 decay */
70 {PARM_BYTE_LO, 1, 0x7f, parm_offset(volrelease), 0}, /* env2 release */
71 {PARM_BYTE_HI, 0, 0x7f, parm_offset(voldcysus), 0}, /* env2 sustain */
72
73 {PARM_WORD, 0, 0x8000, parm_offset(lfo1delay), 0}, /* lfo1 delay */
74 {PARM_BYTE_LO, 0, 0xff, parm_offset(tremfrq), SNDRV_EMUX_UPDATE_TREMFREQ}, /* lfo1 freq */
75 {PARM_SIGN_HI, -128, 127, parm_offset(tremfrq), SNDRV_EMUX_UPDATE_TREMFREQ}, /* lfo1 vol */
76 {PARM_SIGN_HI, -128, 127, parm_offset(fmmod), SNDRV_EMUX_UPDATE_FMMOD}, /* lfo1 pitch */
77 {PARM_BYTE_LO, 0, 0xff, parm_offset(fmmod), SNDRV_EMUX_UPDATE_FMMOD}, /* lfo1 cutoff */
78
79 {PARM_WORD, 0, 0x8000, parm_offset(lfo2delay), 0}, /* lfo2 delay */
80 {PARM_BYTE_LO, 0, 0xff, parm_offset(fm2frq2), SNDRV_EMUX_UPDATE_FM2FRQ2}, /* lfo2 freq */
81 {PARM_SIGN_HI, -128, 127, parm_offset(fm2frq2), SNDRV_EMUX_UPDATE_FM2FRQ2}, /* lfo2 pitch */
82
83 {PARM_WORD, 0, 0xffff, -1, SNDRV_EMUX_UPDATE_PITCH}, /* initial pitch */
84 {PARM_BYTE, 0, 0xff, parm_offset(chorus), 0}, /* chorus */
85 {PARM_BYTE, 0, 0xff, parm_offset(reverb), 0}, /* reverb */
86 {PARM_BYTE, 0, 0xff, parm_offset(cutoff), SNDRV_EMUX_UPDATE_VOLUME}, /* cutoff */
87 {PARM_BYTE, 0, 15, parm_offset(filterQ), SNDRV_EMUX_UPDATE_Q}, /* resonance */
88
89 {PARM_WORD, 0, 0xffff, -1, 0}, /* sample start */
90 {PARM_WORD, 0, 0xffff, -1, 0}, /* loop start */
91 {PARM_WORD, 0, 0xffff, -1, 0}, /* loop end */
92 {PARM_WORD, 0, 0xffff, -1, 0}, /* coarse sample start */
93 {PARM_WORD, 0, 0xffff, -1, 0}, /* coarse loop start */
94 {PARM_WORD, 0, 0xffff, -1, 0}, /* coarse loop end */
95 {PARM_BYTE, 0, 0xff, -1, SNDRV_EMUX_UPDATE_VOLUME}, /* initial attenuation */
96};
97
98/* set byte effect value */
99static void
100effect_set_byte(unsigned char *valp, struct snd_midi_channel *chan, int type)
101{
102 short effect;
103 struct snd_emux_effect_table *fx = chan->private;
104
105 effect = fx->val[type];
106 if (fx->flag[type] == EMUX_FX_FLAG_ADD) {
107 if (parm_defs[type].type & PARM_IS_SIGNED)
108 effect += *(char*)valp;
109 else
110 effect += *valp;
111 }
112 if (effect < parm_defs[type].low)
113 effect = parm_defs[type].low;
114 else if (effect > parm_defs[type].high)
115 effect = parm_defs[type].high;
116 *valp = (unsigned char)effect;
117}
118
119/* set word effect value */
120static void
121effect_set_word(unsigned short *valp, struct snd_midi_channel *chan, int type)
122{
123 int effect;
124 struct snd_emux_effect_table *fx = chan->private;
125
126 effect = *(unsigned short*)&fx->val[type];
127 if (fx->flag[type] == EMUX_FX_FLAG_ADD)
128 effect += *valp;
129 if (effect < parm_defs[type].low)
130 effect = parm_defs[type].low;
131 else if (effect > parm_defs[type].high)
132 effect = parm_defs[type].high;
133 *valp = (unsigned short)effect;
134}
135
136/* address offset */
137static int
138effect_get_offset(struct snd_midi_channel *chan, int lo, int hi, int mode)
139{
140 int addr = 0;
141 struct snd_emux_effect_table *fx = chan->private;
142
143 if (fx->flag[hi])
144 addr = (short)fx->val[hi];
145 addr = addr << 15;
146 if (fx->flag[lo])
147 addr += (short)fx->val[lo];
148 if (!(mode & SNDRV_SFNT_SAMPLE_8BITS))
149 addr /= 2;
150 return addr;
151}
152
153#ifdef CONFIG_SND_SEQUENCER_OSS
154/* change effects - for OSS sequencer compatibility */
155void
156snd_emux_send_effect_oss(struct snd_emux_port *port,
157 struct snd_midi_channel *chan, int type, int val)
158{
159 int mode;
160
161 if (type & 0x40)
162 mode = EMUX_FX_FLAG_OFF;
163 else if (type & 0x80)
164 mode = EMUX_FX_FLAG_ADD;
165 else
166 mode = EMUX_FX_FLAG_SET;
167 type &= 0x3f;
168
169 snd_emux_send_effect(port, chan, type, val, mode);
170}
171#endif
172
173/* Modify the effect value.
174 * if update is necessary, call emu8000_control
175 */
176void
177snd_emux_send_effect(struct snd_emux_port *port, struct snd_midi_channel *chan,
178 int type, int val, int mode)
179{
180 int i;
181 int offset;
182 unsigned char *srcp, *origp;
183 struct snd_emux *emu;
184 struct snd_emux_effect_table *fx;
185 unsigned long flags;
186
187 emu = port->emu;
188 fx = chan->private;
189 if (emu == NULL || fx == NULL)
190 return;
191 if (type < 0 || type >= EMUX_NUM_EFFECTS)
192 return;
193
194 fx->val[type] = val;
195 fx->flag[type] = mode;
196
197 /* do we need to modify the register in realtime ? */
198 if (! parm_defs[type].update || (offset = parm_defs[type].offset) < 0)
199 return;
200
201#ifdef SNDRV_LITTLE_ENDIAN
202 if (parm_defs[type].type & PARM_IS_ALIGN_HI)
203 offset++;
204#else
205 if (parm_defs[type].type & PARM_IS_ALIGN_LO)
206 offset++;
207#endif
208 /* modify the register values */
209 spin_lock_irqsave(&emu->voice_lock, flags);
210 for (i = 0; i < emu->max_voices; i++) {
211 struct snd_emux_voice *vp = &emu->voices[i];
212 if (!STATE_IS_PLAYING(vp->state) || vp->chan != chan)
213 continue;
214 srcp = (unsigned char*)&vp->reg.parm + offset;
215 origp = (unsigned char*)&vp->zone->v.parm + offset;
216 if (parm_defs[i].type & PARM_IS_BYTE) {
217 *srcp = *origp;
218 effect_set_byte(srcp, chan, type);
219 } else {
220 *(unsigned short*)srcp = *(unsigned short*)origp;
221 effect_set_word((unsigned short*)srcp, chan, type);
222 }
223 }
224 spin_unlock_irqrestore(&emu->voice_lock, flags);
225
226 /* activate them */
227 snd_emux_update_channel(port, chan, parm_defs[type].update);
228}
229
230
231/* copy wavetable registers to voice table */
232void
233snd_emux_setup_effect(struct snd_emux_voice *vp)
234{
235 struct snd_midi_channel *chan = vp->chan;
236 struct snd_emux_effect_table *fx;
237 unsigned char *srcp;
238 int i;
239
240 if (! (fx = chan->private))
241 return;
242
243 /* modify the register values via effect table */
244 for (i = 0; i < EMUX_FX_END; i++) {
245 int offset;
246 if (! fx->flag[i] || (offset = parm_defs[i].offset) < 0)
247 continue;
248#ifdef SNDRV_LITTLE_ENDIAN
249 if (parm_defs[i].type & PARM_IS_ALIGN_HI)
250 offset++;
251#else
252 if (parm_defs[i].type & PARM_IS_ALIGN_LO)
253 offset++;
254#endif
255 srcp = (unsigned char*)&vp->reg.parm + offset;
256 if (parm_defs[i].type & PARM_IS_BYTE)
257 effect_set_byte(srcp, chan, i);
258 else
259 effect_set_word((unsigned short*)srcp, chan, i);
260 }
261
262 /* correct sample and loop points */
263 vp->reg.start += effect_get_offset(chan, EMUX_FX_SAMPLE_START,
264 EMUX_FX_COARSE_SAMPLE_START,
265 vp->reg.sample_mode);
266
267 vp->reg.loopstart += effect_get_offset(chan, EMUX_FX_LOOP_START,
268 EMUX_FX_COARSE_LOOP_START,
269 vp->reg.sample_mode);
270
271 vp->reg.loopend += effect_get_offset(chan, EMUX_FX_LOOP_END,
272 EMUX_FX_COARSE_LOOP_END,
273 vp->reg.sample_mode);
274}
275
276/*
277 * effect table
278 */
279void
280snd_emux_create_effect(struct snd_emux_port *p)
281{
282 int i;
283 p->effect = kcalloc(p->chset.max_channels,
284 sizeof(struct snd_emux_effect_table), GFP_KERNEL);
285 if (p->effect) {
286 for (i = 0; i < p->chset.max_channels; i++)
287 p->chset.channels[i].private = p->effect + i;
288 } else {
289 for (i = 0; i < p->chset.max_channels; i++)
290 p->chset.channels[i].private = NULL;
291 }
292}
293
294void
295snd_emux_delete_effect(struct snd_emux_port *p)
296{
297 kfree(p->effect);
298 p->effect = NULL;
299}
300
301void
302snd_emux_clear_effect(struct snd_emux_port *p)
303{
304 if (p->effect) {
305 memset(p->effect, 0, sizeof(struct snd_emux_effect_table) *
306 p->chset.max_channels);
307 }
308}
309
310#endif /* SNDRV_EMUX_USE_RAW_EFFECT */