Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 | /*
* Patch transfer callback for Emu10k1
*
* Copyright (C) 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
*/
/*
* All the code for loading in a patch. There is very little that is
* chip specific here. Just the actual writing to the board.
*/
#include "emu10k1_synth_local.h"
/*
*/
#define BLANK_LOOP_START 4
#define BLANK_LOOP_END 8
#define BLANK_LOOP_SIZE 12
#define BLANK_HEAD_SIZE 32
/*
* allocate a sample block and copy data from userspace
*/
int
snd_emu10k1_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp,
struct snd_util_memhdr *hdr,
const void __user *data, long count)
{
int offset;
int truesize, size, loopsize, blocksize;
int loopend, sampleend;
unsigned int start_addr;
struct snd_emu10k1 *emu;
emu = rec->hw;
if (snd_BUG_ON(!sp || !hdr))
return -EINVAL;
if (sp->v.size == 0) {
dev_dbg(emu->card->dev,
"emu: rom font for sample %d\n", sp->v.sample);
return 0;
}
/* recalculate address offset */
sp->v.end -= sp->v.start;
sp->v.loopstart -= sp->v.start;
sp->v.loopend -= sp->v.start;
sp->v.start = 0;
/* some samples have invalid data. the addresses are corrected in voice info */
sampleend = sp->v.end;
if (sampleend > sp->v.size)
sampleend = sp->v.size;
loopend = sp->v.loopend;
if (loopend > sampleend)
loopend = sampleend;
/* be sure loop points start < end */
if (sp->v.loopstart >= sp->v.loopend) {
int tmp = sp->v.loopstart;
sp->v.loopstart = sp->v.loopend;
sp->v.loopend = tmp;
}
/* compute true data size to be loaded */
truesize = sp->v.size + BLANK_HEAD_SIZE;
loopsize = 0;
#if 0 /* not supported */
if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP))
loopsize = sp->v.loopend - sp->v.loopstart;
truesize += loopsize;
#endif
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK)
truesize += BLANK_LOOP_SIZE;
/* try to allocate a memory block */
blocksize = truesize;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
blocksize *= 2;
sp->block = snd_emu10k1_synth_alloc(emu, blocksize);
if (sp->block == NULL) {
dev_dbg(emu->card->dev,
"synth malloc failed (size=%d)\n", blocksize);
/* not ENOMEM (for compatibility with OSS) */
return -ENOSPC;
}
/* set the total size */
sp->v.truesize = blocksize;
/* write blank samples at head */
offset = 0;
size = BLANK_HEAD_SIZE;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
size *= 2;
if (offset + size > blocksize)
return -EINVAL;
snd_emu10k1_synth_bzero(emu, sp->block, offset, size);
offset += size;
/* copy start->loopend */
size = loopend;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
size *= 2;
if (offset + size > blocksize)
return -EINVAL;
if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) {
snd_emu10k1_synth_free(emu, sp->block);
sp->block = NULL;
return -EFAULT;
}
offset += size;
data += size;
#if 0 /* not supported yet */
/* handle reverse (or bidirectional) loop */
if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP)) {
/* copy loop in reverse */
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) {
int woffset;
unsigned short *wblock = (unsigned short*)block;
woffset = offset / 2;
if (offset + loopsize * 2 > blocksize)
return -EINVAL;
for (i = 0; i < loopsize; i++)
wblock[woffset + i] = wblock[woffset - i -1];
offset += loopsize * 2;
} else {
if (offset + loopsize > blocksize)
return -EINVAL;
for (i = 0; i < loopsize; i++)
block[offset + i] = block[offset - i -1];
offset += loopsize;
}
/* modify loop pointers */
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_BIDIR_LOOP) {
sp->v.loopend += loopsize;
} else {
sp->v.loopstart += loopsize;
sp->v.loopend += loopsize;
}
/* add sample pointer */
sp->v.end += loopsize;
}
#endif
/* loopend -> sample end */
size = sp->v.size - loopend;
if (size < 0)
return -EINVAL;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
size *= 2;
if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) {
snd_emu10k1_synth_free(emu, sp->block);
sp->block = NULL;
return -EFAULT;
}
offset += size;
/* clear rest of samples (if any) */
if (offset < blocksize)
snd_emu10k1_synth_bzero(emu, sp->block, offset, blocksize - offset);
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK) {
/* if no blank loop is attached in the sample, add it */
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT) {
sp->v.loopstart = sp->v.end + BLANK_LOOP_START;
sp->v.loopend = sp->v.end + BLANK_LOOP_END;
}
}
#if 0 /* not supported yet */
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_UNSIGNED) {
/* unsigned -> signed */
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) {
unsigned short *wblock = (unsigned short*)block;
for (i = 0; i < truesize; i++)
wblock[i] ^= 0x8000;
} else {
for (i = 0; i < truesize; i++)
block[i] ^= 0x80;
}
}
#endif
/* recalculate offset */
start_addr = BLANK_HEAD_SIZE * 2;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
start_addr >>= 1;
sp->v.start += start_addr;
sp->v.end += start_addr;
sp->v.loopstart += start_addr;
sp->v.loopend += start_addr;
return 0;
}
/*
* free a sample block
*/
int
snd_emu10k1_sample_free(struct snd_emux *rec, struct snd_sf_sample *sp,
struct snd_util_memhdr *hdr)
{
struct snd_emu10k1 *emu;
emu = rec->hw;
if (snd_BUG_ON(!sp || !hdr))
return -EINVAL;
if (sp->block) {
snd_emu10k1_synth_free(emu, sp->block);
sp->block = NULL;
}
return 0;
}
|