ia64/linux-2.6.18-xen.hg

view sound/synth/emux/emux_effect.c @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
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 */
25 #include "emux_voice.h"
26 #include <linux/slab.h>
28 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
29 /*
30 * effects table
31 */
33 #define xoffsetof(type,tag) ((long)(&((type)NULL)->tag) - (long)(NULL))
35 #define parm_offset(tag) xoffsetof(struct soundfont_voice_parm *, tag)
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)
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)
51 static 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 */
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 */
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 */
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 */
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 */
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 };
98 /* set byte effect value */
99 static void
100 effect_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;
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 }
119 /* set word effect value */
120 static void
121 effect_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;
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 }
136 /* address offset */
137 static int
138 effect_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;
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 }
153 #ifdef CONFIG_SND_SEQUENCER_OSS
154 /* change effects - for OSS sequencer compatibility */
155 void
156 snd_emux_send_effect_oss(struct snd_emux_port *port,
157 struct snd_midi_channel *chan, int type, int val)
158 {
159 int mode;
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;
169 snd_emux_send_effect(port, chan, type, val, mode);
170 }
171 #endif
173 /* Modify the effect value.
174 * if update is necessary, call emu8000_control
175 */
176 void
177 snd_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;
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;
194 fx->val[type] = val;
195 fx->flag[type] = mode;
197 /* do we need to modify the register in realtime ? */
198 if (! parm_defs[type].update || (offset = parm_defs[type].offset) < 0)
199 return;
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);
226 /* activate them */
227 snd_emux_update_channel(port, chan, parm_defs[type].update);
228 }
231 /* copy wavetable registers to voice table */
232 void
233 snd_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;
240 if (! (fx = chan->private))
241 return;
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 }
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);
267 vp->reg.loopstart += effect_get_offset(chan, EMUX_FX_LOOP_START,
268 EMUX_FX_COARSE_LOOP_START,
269 vp->reg.sample_mode);
271 vp->reg.loopend += effect_get_offset(chan, EMUX_FX_LOOP_END,
272 EMUX_FX_COARSE_LOOP_END,
273 vp->reg.sample_mode);
274 }
276 /*
277 * effect table
278 */
279 void
280 snd_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 }
294 void
295 snd_emux_delete_effect(struct snd_emux_port *p)
296 {
297 kfree(p->effect);
298 p->effect = NULL;
299 }
301 void
302 snd_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 }
310 #endif /* SNDRV_EMUX_USE_RAW_EFFECT */