summaryrefslogtreecommitdiff
path: root/sound/pci/emu10k1/emu10k1_patch.c
blob: 0e069aeab86d1075112daf01fe6384332017eb63 (plain)
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;
}