LXR linux/include/sound/sb16

   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