2 * Midi synth routines for the Emu8k/Emu10k1
4 * Copyright (C) 1999 Steve Ratcliffe
5 * Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
7 * Contains code based on awe_wave.c by Takashi Iwai
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.
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.
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
25 #include "emux_voice.h"
26 #include <linux/slab.h>
28 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
33 #define xoffsetof(type,tag) ((long)(&((type)NULL)->tag) - (long)(NULL))
35 #define parm_offset(tag) xoffsetof(soundfont_voice_parm_t*, 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 */
98 /* set byte effect value */
100 effect_set_byte(unsigned char *valp
, snd_midi_channel_t
*chan
, int type
)
103 snd_emux_effect_table_t
*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
;
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
;
119 /* set word effect value */
121 effect_set_word(unsigned short *valp
, snd_midi_channel_t
*chan
, int type
)
124 snd_emux_effect_table_t
*fx
= chan
->private;
126 effect
= *(unsigned short*)&fx
->val
[type
];
127 if (fx
->flag
[type
] == EMUX_FX_FLAG_ADD
)
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
;
138 effect_get_offset(snd_midi_channel_t
*chan
, int lo
, int hi
, int mode
)
141 snd_emux_effect_table_t
*fx
= chan
->private;
144 addr
= (short)fx
->val
[hi
];
147 addr
+= (short)fx
->val
[lo
];
148 if (!(mode
& SNDRV_SFNT_SAMPLE_8BITS
))
153 #ifdef CONFIG_SND_SEQUENCER_OSS
154 /* change effects - for OSS sequencer compatibility */
156 snd_emux_send_effect_oss(snd_emux_port_t
*port
, snd_midi_channel_t
*chan
, int type
, int val
)
161 mode
= EMUX_FX_FLAG_OFF
;
162 else if (type
& 0x80)
163 mode
= EMUX_FX_FLAG_ADD
;
165 mode
= EMUX_FX_FLAG_SET
;
168 snd_emux_send_effect(port
, chan
, type
, val
, mode
);
172 /* Modify the effect value.
173 * if update is necessary, call emu8000_control
176 snd_emux_send_effect(snd_emux_port_t
*port
, snd_midi_channel_t
*chan
, int type
, int val
, int mode
)
180 unsigned char *srcp
, *origp
;
182 snd_emux_effect_table_t
*fx
;
187 if (emu
== NULL
|| fx
== NULL
)
189 if (type
< 0 || type
>= EMUX_NUM_EFFECTS
)
193 fx
->flag
[type
] = mode
;
195 /* do we need to modify the register in realtime ? */
196 if (! parm_defs
[type
].update
|| (offset
= parm_defs
[type
].offset
) < 0)
199 #ifdef SNDRV_LITTLE_ENDIAN
200 if (parm_defs
[type
].type
& PARM_IS_ALIGN_HI
)
203 if (parm_defs
[type
].type
& PARM_IS_ALIGN_LO
)
206 /* modify the register values */
207 spin_lock_irqsave(&emu
->voice_lock
, flags
);
208 for (i
= 0; i
< emu
->max_voices
; i
++) {
209 snd_emux_voice_t
*vp
= &emu
->voices
[i
];
210 if (!STATE_IS_PLAYING(vp
->state
) || vp
->chan
!= chan
)
212 srcp
= (unsigned char*)&vp
->reg
.parm
+ offset
;
213 origp
= (unsigned char*)&vp
->zone
->v
.parm
+ offset
;
214 if (parm_defs
[i
].type
& PARM_IS_BYTE
) {
216 effect_set_byte(srcp
, chan
, type
);
218 *(unsigned short*)srcp
= *(unsigned short*)origp
;
219 effect_set_word((unsigned short*)srcp
, chan
, type
);
222 spin_unlock_irqrestore(&emu
->voice_lock
, flags
);
225 snd_emux_update_channel(port
, chan
, parm_defs
[type
].update
);
229 /* copy wavetable registers to voice table */
231 snd_emux_setup_effect(snd_emux_voice_t
*vp
)
233 snd_midi_channel_t
*chan
= vp
->chan
;
234 snd_emux_effect_table_t
*fx
;
238 if (! (fx
= chan
->private))
241 /* modify the register values via effect table */
242 for (i
= 0; i
< EMUX_FX_END
; i
++) {
244 if (! fx
->flag
[i
] || (offset
= parm_defs
[i
].offset
) < 0)
246 #ifdef SNDRV_LITTLE_ENDIAN
247 if (parm_defs
[i
].type
& PARM_IS_ALIGN_HI
)
250 if (parm_defs
[i
].type
& PARM_IS_ALIGN_LO
)
253 srcp
= (unsigned char*)&vp
->reg
.parm
+ offset
;
254 if (parm_defs
[i
].type
& PARM_IS_BYTE
)
255 effect_set_byte(srcp
, chan
, i
);
257 effect_set_word((unsigned short*)srcp
, chan
, i
);
260 /* correct sample and loop points */
261 vp
->reg
.start
+= effect_get_offset(chan
, EMUX_FX_SAMPLE_START
,
262 EMUX_FX_COARSE_SAMPLE_START
,
263 vp
->reg
.sample_mode
);
265 vp
->reg
.loopstart
+= effect_get_offset(chan
, EMUX_FX_LOOP_START
,
266 EMUX_FX_COARSE_LOOP_START
,
267 vp
->reg
.sample_mode
);
269 vp
->reg
.loopend
+= effect_get_offset(chan
, EMUX_FX_LOOP_END
,
270 EMUX_FX_COARSE_LOOP_END
,
271 vp
->reg
.sample_mode
);
278 snd_emux_create_effect(snd_emux_port_t
*p
)
281 p
->effect
= kcalloc(p
->chset
.max_channels
, sizeof(snd_emux_effect_table_t
), GFP_KERNEL
);
283 for (i
= 0; i
< p
->chset
.max_channels
; i
++)
284 p
->chset
.channels
[i
].private = p
->effect
+ i
;
286 for (i
= 0; i
< p
->chset
.max_channels
; i
++)
287 p
->chset
.channels
[i
].private = NULL
;
292 snd_emux_delete_effect(snd_emux_port_t
*p
)
299 snd_emux_clear_effect(snd_emux_port_t
*p
)
302 memset(p
->effect
, 0, sizeof(snd_emux_effect_table_t
) * p
->chset
.max_channels
);
306 #endif /* SNDRV_EMUX_USE_RAW_EFFECT */