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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  * $FreeBSD$
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