Root/include/sound/sb16_csp.h

1/*
2 * Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
3 * Takashi Iwai <tiwai@suse.de>
4 *
5 * SB16ASP/AWE32 CSP control
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22#ifndef __SOUND_SB16_CSP_H
23#define __SOUND_SB16_CSP_H
24
25#include <sound/sb.h>
26#include <sound/hwdep.h>
27#include <linux/firmware.h>
28#include <uapi/sound/sb16_csp.h>
29
30struct snd_sb_csp;
31
32/* indices for the known CSP programs */
33enum {
34    CSP_PROGRAM_MULAW,
35    CSP_PROGRAM_ALAW,
36    CSP_PROGRAM_ADPCM_INIT,
37    CSP_PROGRAM_ADPCM_PLAYBACK,
38    CSP_PROGRAM_ADPCM_CAPTURE,
39
40    CSP_PROGRAM_COUNT
41};
42
43/*
44 * CSP operators
45 */
46struct snd_sb_csp_ops {
47    int (*csp_use) (struct snd_sb_csp * p);
48    int (*csp_unuse) (struct snd_sb_csp * p);
49    int (*csp_autoload) (struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
50    int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels);
51    int (*csp_stop) (struct snd_sb_csp * p);
52    int (*csp_qsound_transfer) (struct snd_sb_csp * p);
53};
54
55/*
56 * CSP private data
57 */
58struct snd_sb_csp {
59    struct snd_sb *chip; /* SB16 DSP */
60    int used; /* usage flag - exclusive */
61    char codec_name[16]; /* name of codec */
62    unsigned short func_nr; /* function number */
63    unsigned int acc_format; /* accepted PCM formats */
64    int acc_channels; /* accepted channels */
65    int acc_width; /* accepted sample width */
66    int acc_rates; /* accepted sample rates */
67    int mode; /* MODE */
68    int run_channels; /* current CSP channels */
69    int run_width; /* current sample width */
70    int version; /* CSP version (0x10 - 0x1f) */
71    int running; /* running state */
72
73    struct snd_sb_csp_ops ops; /* operators */
74
75    spinlock_t q_lock; /* locking */
76    int q_enabled; /* enabled flag */
77    int qpos_left; /* left position */
78    int qpos_right; /* right position */
79    int qpos_changed; /* position changed flag */
80
81    struct snd_kcontrol *qsound_switch;
82    struct snd_kcontrol *qsound_space;
83
84    struct mutex access_mutex; /* locking */
85
86    const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
87};
88
89int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
90#endif /* __SOUND_SB16_CSP */
91

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