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1da177e4 LT |
1 | /* |
2 | * Patch transfer callback for Emu10k1 | |
3 | * | |
4 | * Copyright (C) 2000 Takashi iwai <tiwai@suse.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | /* | |
21 | * All the code for loading in a patch. There is very little that is | |
22 | * chip specific here. Just the actual writing to the board. | |
23 | */ | |
24 | ||
25 | #include "emu10k1_synth_local.h" | |
26 | ||
27 | /* | |
28 | */ | |
29 | #define BLANK_LOOP_START 4 | |
30 | #define BLANK_LOOP_END 8 | |
31 | #define BLANK_LOOP_SIZE 12 | |
32 | #define BLANK_HEAD_SIZE 32 | |
33 | ||
34 | /* | |
35 | * allocate a sample block and copy data from userspace | |
36 | */ | |
37 | int | |
eb4698f3 TI |
38 | snd_emu10k1_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp, |
39 | struct snd_util_memhdr *hdr, | |
40 | const void __user *data, long count) | |
1da177e4 LT |
41 | { |
42 | int offset; | |
43 | int truesize, size, loopsize, blocksize; | |
44 | int loopend, sampleend; | |
45 | unsigned int start_addr; | |
eb4698f3 | 46 | struct snd_emu10k1 *emu; |
1da177e4 LT |
47 | |
48 | emu = rec->hw; | |
49 | snd_assert(sp != NULL, return -EINVAL); | |
50 | snd_assert(hdr != NULL, return -EINVAL); | |
51 | ||
52 | if (sp->v.size == 0) { | |
53 | snd_printd("emu: rom font for sample %d\n", sp->v.sample); | |
54 | return 0; | |
55 | } | |
56 | ||
57 | /* recalculate address offset */ | |
58 | sp->v.end -= sp->v.start; | |
59 | sp->v.loopstart -= sp->v.start; | |
60 | sp->v.loopend -= sp->v.start; | |
61 | sp->v.start = 0; | |
62 | ||
63 | /* some samples have invalid data. the addresses are corrected in voice info */ | |
64 | sampleend = sp->v.end; | |
65 | if (sampleend > sp->v.size) | |
66 | sampleend = sp->v.size; | |
67 | loopend = sp->v.loopend; | |
68 | if (loopend > sampleend) | |
69 | loopend = sampleend; | |
70 | ||
71 | /* be sure loop points start < end */ | |
72 | if (sp->v.loopstart >= sp->v.loopend) { | |
73 | int tmp = sp->v.loopstart; | |
74 | sp->v.loopstart = sp->v.loopend; | |
75 | sp->v.loopend = tmp; | |
76 | } | |
77 | ||
78 | /* compute true data size to be loaded */ | |
79 | truesize = sp->v.size + BLANK_HEAD_SIZE; | |
80 | loopsize = 0; | |
81 | #if 0 /* not supported */ | |
82 | if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP)) | |
83 | loopsize = sp->v.loopend - sp->v.loopstart; | |
84 | truesize += loopsize; | |
85 | #endif | |
86 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK) | |
87 | truesize += BLANK_LOOP_SIZE; | |
88 | ||
89 | /* try to allocate a memory block */ | |
90 | blocksize = truesize; | |
91 | if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) | |
92 | blocksize *= 2; | |
93 | sp->block = snd_emu10k1_synth_alloc(emu, blocksize); | |
94 | if (sp->block == NULL) { | |
95 | snd_printd("emu10k1: synth malloc failed (size=%d)\n", blocksize); | |
96 | /* not ENOMEM (for compatibility with OSS) */ | |
97 | return -ENOSPC; | |
98 | } | |
99 | /* set the total size */ | |
100 | sp->v.truesize = blocksize; | |
101 | ||
102 | /* write blank samples at head */ | |
103 | offset = 0; | |
104 | size = BLANK_HEAD_SIZE; | |
105 | if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) | |
106 | size *= 2; | |
107 | snd_assert(offset + size <= blocksize, return -EINVAL); | |
108 | snd_emu10k1_synth_bzero(emu, sp->block, offset, size); | |
109 | offset += size; | |
110 | ||
111 | /* copy start->loopend */ | |
112 | size = loopend; | |
113 | if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) | |
114 | size *= 2; | |
115 | snd_assert(offset + size <= blocksize, return -EINVAL); | |
116 | if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) { | |
117 | snd_emu10k1_synth_free(emu, sp->block); | |
118 | sp->block = NULL; | |
119 | return -EFAULT; | |
120 | } | |
121 | offset += size; | |
122 | data += size; | |
123 | ||
124 | #if 0 /* not suppported yet */ | |
125 | /* handle reverse (or bidirectional) loop */ | |
126 | if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP)) { | |
127 | /* copy loop in reverse */ | |
128 | if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) { | |
129 | int woffset; | |
130 | unsigned short *wblock = (unsigned short*)block; | |
131 | woffset = offset / 2; | |
132 | snd_assert(offset + loopsize*2 <= blocksize, return -EINVAL); | |
133 | for (i = 0; i < loopsize; i++) | |
134 | wblock[woffset + i] = wblock[woffset - i -1]; | |
135 | offset += loopsize * 2; | |
136 | } else { | |
137 | snd_assert(offset + loopsize <= blocksize, return -EINVAL); | |
138 | for (i = 0; i < loopsize; i++) | |
139 | block[offset + i] = block[offset - i -1]; | |
140 | offset += loopsize; | |
141 | } | |
142 | ||
143 | /* modify loop pointers */ | |
144 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_BIDIR_LOOP) { | |
145 | sp->v.loopend += loopsize; | |
146 | } else { | |
147 | sp->v.loopstart += loopsize; | |
148 | sp->v.loopend += loopsize; | |
149 | } | |
150 | /* add sample pointer */ | |
151 | sp->v.end += loopsize; | |
152 | } | |
153 | #endif | |
154 | ||
155 | /* loopend -> sample end */ | |
156 | size = sp->v.size - loopend; | |
157 | snd_assert(size >= 0, return -EINVAL); | |
158 | if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) | |
159 | size *= 2; | |
160 | if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) { | |
161 | snd_emu10k1_synth_free(emu, sp->block); | |
162 | sp->block = NULL; | |
163 | return -EFAULT; | |
164 | } | |
165 | offset += size; | |
166 | ||
167 | /* clear rest of samples (if any) */ | |
168 | if (offset < blocksize) | |
169 | snd_emu10k1_synth_bzero(emu, sp->block, offset, blocksize - offset); | |
170 | ||
171 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK) { | |
172 | /* if no blank loop is attached in the sample, add it */ | |
173 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT) { | |
174 | sp->v.loopstart = sp->v.end + BLANK_LOOP_START; | |
175 | sp->v.loopend = sp->v.end + BLANK_LOOP_END; | |
176 | } | |
177 | } | |
178 | ||
179 | #if 0 /* not supported yet */ | |
180 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_UNSIGNED) { | |
181 | /* unsigned -> signed */ | |
182 | if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) { | |
183 | unsigned short *wblock = (unsigned short*)block; | |
184 | for (i = 0; i < truesize; i++) | |
185 | wblock[i] ^= 0x8000; | |
186 | } else { | |
187 | for (i = 0; i < truesize; i++) | |
188 | block[i] ^= 0x80; | |
189 | } | |
190 | } | |
191 | #endif | |
192 | ||
193 | /* recalculate offset */ | |
194 | start_addr = BLANK_HEAD_SIZE * 2; | |
195 | if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) | |
196 | start_addr >>= 1; | |
197 | sp->v.start += start_addr; | |
198 | sp->v.end += start_addr; | |
199 | sp->v.loopstart += start_addr; | |
200 | sp->v.loopend += start_addr; | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
205 | /* | |
206 | * free a sample block | |
207 | */ | |
208 | int | |
eb4698f3 TI |
209 | snd_emu10k1_sample_free(struct snd_emux *rec, struct snd_sf_sample *sp, |
210 | struct snd_util_memhdr *hdr) | |
1da177e4 | 211 | { |
eb4698f3 | 212 | struct snd_emu10k1 *emu; |
1da177e4 LT |
213 | |
214 | emu = rec->hw; | |
215 | snd_assert(sp != NULL, return -EINVAL); | |
216 | snd_assert(hdr != NULL, return -EINVAL); | |
217 | ||
218 | if (sp->block) { | |
219 | snd_emu10k1_synth_free(emu, sp->block); | |
220 | sp->block = NULL; | |
221 | } | |
222 | return 0; | |
223 | } | |
224 |