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
  30 struct snd_sb_csp;
  31
  32 /* indices for the known CSP programs */
  33 enum {
  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  */
  46 struct 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, snd_pcm_format_t 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  */
  58 struct 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
  89 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
  90 #endif /* __SOUND_SB16_CSP */