1 /*-
2 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
3 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: releng/8.1/sys/dev/sound/pcm/feeder.h 193640 2009-06-07 19:12:08Z ariff $
28 */
29
30 struct pcm_feederdesc {
31 u_int32_t type;
32 u_int32_t in, out;
33 u_int32_t flags;
34 int idx;
35 };
36
37 struct feeder_class {
38 KOBJ_CLASS_FIELDS;
39 struct pcm_feederdesc *desc;
40 void *data;
41 };
42
43 struct pcm_feeder {
44 KOBJ_FIELDS;
45 int align;
46 struct pcm_feederdesc *desc, desc_static;
47 void *data;
48 struct feeder_class *class;
49 struct pcm_feeder *source, *parent;
50
51 };
52
53 void feeder_register(void *p);
54 struct feeder_class *feeder_getclass(struct pcm_feederdesc *desc);
55
56 u_int32_t snd_fmtscore(u_int32_t fmt);
57 u_int32_t snd_fmtbestbit(u_int32_t fmt, u_int32_t *fmts);
58 u_int32_t snd_fmtbestchannel(u_int32_t fmt, u_int32_t *fmts);
59 u_int32_t snd_fmtbest(u_int32_t fmt, u_int32_t *fmts);
60
61 int chn_addfeeder(struct pcm_channel *c, struct feeder_class *fc,
62 struct pcm_feederdesc *desc);
63 int chn_removefeeder(struct pcm_channel *c);
64 struct pcm_feeder *chn_findfeeder(struct pcm_channel *c, u_int32_t type);
65 void feeder_printchain(struct pcm_feeder *head);
66 int feeder_chain(struct pcm_channel *);
67
68 #define FEEDER_DECLARE(feeder, pdata) \
69 static struct feeder_class feeder ## _class = { \
70 .name = #feeder, \
71 .methods = feeder ## _methods, \
72 .size = sizeof(struct pcm_feeder), \
73 .desc = feeder ## _desc, \
74 .data = pdata, \
75 }; \
76 SYSINIT(feeder, SI_SUB_DRIVERS, SI_ORDER_ANY, feeder_register, \
77 &feeder ## _class)
78
79 enum {
80 FEEDER_ROOT,
81 FEEDER_FORMAT,
82 FEEDER_MIXER,
83 FEEDER_RATE,
84 FEEDER_EQ,
85 FEEDER_VOLUME,
86 FEEDER_MATRIX,
87 FEEDER_LAST,
88 };
89
90 /* feeder_format */
91 enum {
92 FEEDFORMAT_CHANNELS
93 };
94
95 /* feeder_mixer */
96 enum {
97 FEEDMIXER_CHANNELS
98 };
99
100 /* feeder_rate */
101 enum {
102 FEEDRATE_SRC,
103 FEEDRATE_DST,
104 FEEDRATE_QUALITY,
105 FEEDRATE_CHANNELS
106 };
107
108 #define FEEDRATE_RATEMIN 1
109 #define FEEDRATE_RATEMAX 2016000 /* 48000 * 42 */
110 #define FEEDRATE_MIN 1
111 #define FEEDRATE_MAX 0x7fffff /* sign 24bit ~ 8ghz ! */
112 #define FEEDRATE_ROUNDHZ 25
113 #define FEEDRATE_ROUNDHZ_MIN 0
114 #define FEEDRATE_ROUNDHZ_MAX 500
115
116 extern int feeder_rate_min;
117 extern int feeder_rate_max;
118 extern int feeder_rate_round;
119 extern int feeder_rate_quality;
120
121 /* feeder_eq */
122 enum {
123 FEEDEQ_CHANNELS,
124 FEEDEQ_RATE,
125 FEEDEQ_TREBLE,
126 FEEDEQ_BASS,
127 FEEDEQ_PREAMP,
128 FEEDEQ_STATE,
129 FEEDEQ_DISABLE,
130 FEEDEQ_ENABLE,
131 FEEDEQ_BYPASS,
132 FEEDEQ_UNKNOWN
133 };
134
135 int feeder_eq_validrate(uint32_t);
136 void feeder_eq_initsys(device_t);
137
138 /* feeder_volume */
139 enum {
140 FEEDVOLUME_CLASS,
141 FEEDVOLUME_CHANNELS,
142 FEEDVOLUME_STATE,
143 FEEDVOLUME_ENABLE,
144 FEEDVOLUME_BYPASS
145 };
146
147 int feeder_volume_apply_matrix(struct pcm_feeder *, struct pcmchan_matrix *);
148
149 /* feeder_matrix */
150 int feeder_matrix_default_id(uint32_t);
151 struct pcmchan_matrix *feeder_matrix_default_channel_map(uint32_t);
152
153 uint32_t feeder_matrix_default_format(uint32_t);
154
155 int feeder_matrix_format_id(uint32_t);
156 struct pcmchan_matrix *feeder_matrix_format_map(uint32_t);
157
158 struct pcmchan_matrix *feeder_matrix_id_map(int);
159
160 int feeder_matrix_setup(struct pcm_feeder *, struct pcmchan_matrix *,
161 struct pcmchan_matrix *);
162 int feeder_matrix_compare(struct pcmchan_matrix *, struct pcmchan_matrix *);
163
164 /* 4Front OSS stuffs */
165 int feeder_matrix_oss_get_channel_order(struct pcmchan_matrix *,
166 unsigned long long *);
167 int feeder_matrix_oss_set_channel_order(struct pcmchan_matrix *,
168 unsigned long long *);
169
170 #if 0
171 /* feeder_matrix */
172 enum {
173 FEEDMATRIX_TYPE,
174 FEEDMATRIX_RESET,
175 FEEDMATRIX_CHANNELS_IN,
176 FEEDMATRIX_CHANNELS_OUT,
177 FEEDMATRIX_SET_MAP
178 };
179
180 enum {
181 FEEDMATRIX_TYPE_NONE,
182 FEEDMATRIX_TYPE_AUTO,
183 FEEDMATRIX_TYPE_2X1,
184 FEEDMATRIX_TYPE_1X2,
185 FEEDMATRIX_TYPE_2X2
186 };
187
188 #define FEEDMATRIX_TYPE_STEREO_TO_MONO FEEDMATRIX_TYPE_2X1
189 #define FEEDMATRIX_TYPE_MONO_TO_STEREO FEEDMATRIX_TYPE_1X2
190 #define FEEDMATRIX_TYPE_SWAP_STEREO FEEDMATRIX_TYPE_2X2
191 #define FEEDMATRIX_MAP(x, y) ((((x) & 0x3f) << 6) | ((y) & 0x3f))
192 #define FEEDMATRIX_MAP_SRC(x) ((x) & 0x3f)
193 #define FEEDMATRIX_MAP_DST(x) (((x) >> 6) & 0x3f)
194 #endif
195
196 /*
197 * By default, various feeders only deal with sign 16/32 bit native-endian
198 * since it should provide the fastest processing path. Processing 8bit samples
199 * is too noisy due to limited dynamic range, while 24bit is quite slow due to
200 * unnatural per-byte read/write. However, for debugging purposes, ensuring
201 * implementation correctness and torture test, the following can be defined:
202 *
203 * SND_FEEDER_MULTIFORMAT - Compile all type of converters, but force
204 * 8bit samples to be converted to 16bit
205 * native-endian for better dynamic range.
206 * Process 24bit samples natively.
207 * SND_FEEDER_FULL_MULTIFORMAT - Ditto, but process 8bit samples natively.
208 */
209 #ifdef SND_FEEDER_FULL_MULTIFORMAT
210 #undef SND_FEEDER_MULTIFORMAT
211 #define SND_FEEDER_MULTIFORMAT 1
212 #endif
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