Logo Search packages:      
Sourcecode: alsa-driver version File versions  Download package

sb16_csp.h

#ifndef __SOUND_SB16_CSP_H
#define __SOUND_SB16_CSP_H

/*
 *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
 *                        Takashi Iwai <tiwai@suse.de>
 *
 *  SB16ASP/AWE32 CSP control
 *
 *   This program is free software; you can redistribute it and/or modify 
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

/* CSP modes */
#define SNDRV_SB_CSP_MODE_NONE            0x00
#define SNDRV_SB_CSP_MODE_DSP_READ  0x01  /* Record from DSP */
#define SNDRV_SB_CSP_MODE_DSP_WRITE 0x02  /* Play to DSP */
#define SNDRV_SB_CSP_MODE_QSOUND          0x04  /* QSound */

/* CSP load flags */
#define SNDRV_SB_CSP_LOAD_FROMUSER  0x01
#define SNDRV_SB_CSP_LOAD_INITBLOCK 0x02

/* CSP sample width */
#define SNDRV_SB_CSP_SAMPLE_8BIT          0x01
#define SNDRV_SB_CSP_SAMPLE_16BIT         0x02

/* CSP channels */
#define SNDRV_SB_CSP_MONO                 0x01
#define SNDRV_SB_CSP_STEREO         0x02

/* CSP rates */
#define SNDRV_SB_CSP_RATE_8000            0x01
#define SNDRV_SB_CSP_RATE_11025           0x02
#define SNDRV_SB_CSP_RATE_22050           0x04
#define SNDRV_SB_CSP_RATE_44100           0x08
#define SNDRV_SB_CSP_RATE_ALL       0x0f

/* CSP running state */
#define SNDRV_SB_CSP_ST_IDLE        0x00
#define SNDRV_SB_CSP_ST_LOADED            0x01
#define SNDRV_SB_CSP_ST_RUNNING           0x02
#define SNDRV_SB_CSP_ST_PAUSED            0x04
#define SNDRV_SB_CSP_ST_AUTO        0x08
#define SNDRV_SB_CSP_ST_QSOUND            0x10

/* maximum QSound value (180 degrees right) */
#define SNDRV_SB_CSP_QSOUND_MAX_RIGHT     0x20

/* maximum microcode RIFF file size */
#define SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE    0x3000

/* microcode header */
typedef struct snd_sb_csp_mc_header {
      char codec_name[16];          /* id name of codec */
      unsigned short func_req;      /* requested function */
} snd_sb_csp_mc_header_t;

/* microcode to be loaded */
typedef struct snd_sb_csp_microcode {
      snd_sb_csp_mc_header_t info;
      unsigned char data[SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE];
} snd_sb_csp_microcode_t;

/* start CSP with sample_width in mono/stereo */
typedef struct snd_sb_csp_start {
      int sample_width; /* sample width, look above */
      int channels;           /* channels, look above */
} snd_sb_csp_start_t;

/* CSP information */
typedef struct snd_sb_csp_info {
      char codec_name[16];          /* id name of codec */
      unsigned short func_nr;       /* function number */
      unsigned int acc_format;      /* accepted PCM formats */
      unsigned short acc_channels;  /* accepted channels */
      unsigned short acc_width;     /* accepted sample width */
      unsigned short acc_rates;     /* accepted sample rates */
      unsigned short csp_mode;      /* CSP mode, see above */
      unsigned short run_channels;  /* current channels  */
      unsigned short run_width;     /* current sample width */
      unsigned short version;       /* version id: 0x10 - 0x1f */
      unsigned short state;         /* state bits */
} snd_sb_csp_info_t;

/* HWDEP controls */
/* get CSP information */
#define SNDRV_SB_CSP_IOCTL_INFO           _IOR('H', 0x10, snd_sb_csp_info_t)
/* load microcode to CSP */
#define SNDRV_SB_CSP_IOCTL_LOAD_CODE      _IOW('H', 0x11, snd_sb_csp_microcode_t)
/* unload microcode from CSP */
#define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE    _IO('H', 0x12)
/* start CSP */
#define SNDRV_SB_CSP_IOCTL_START          _IOW('H', 0x13, snd_sb_csp_start_t)
/* stop CSP */
#define SNDRV_SB_CSP_IOCTL_STOP           _IO('H', 0x14)
/* pause CSP and DMA transfer */
#define SNDRV_SB_CSP_IOCTL_PAUSE          _IO('H', 0x15)
/* restart CSP and DMA transfer */
#define SNDRV_SB_CSP_IOCTL_RESTART  _IO('H', 0x16)

#ifdef __KERNEL__
#include "sb.h"
#include "hwdep.h"

typedef struct snd_sb_csp snd_sb_csp_t;

/*
 * CSP operators
 */
typedef struct {
      int (*csp_use) (snd_sb_csp_t * p);
      int (*csp_unuse) (snd_sb_csp_t * p);
      int (*csp_autoload) (snd_sb_csp_t * p, int pcm_sfmt, int play_rec_mode);
      int (*csp_start) (snd_sb_csp_t * p, int sample_width, int channels);
      int (*csp_stop) (snd_sb_csp_t * p);
      int (*csp_qsound_transfer) (snd_sb_csp_t * p);
} snd_sb_csp_ops_t;

/*
 * CSP private data
 */
struct snd_sb_csp {
      sb_t *chip;       /* SB16 DSP */
      int used;         /* usage flag - exclusive */
      char codec_name[16];    /* name of codec */
      unsigned short func_nr; /* function number */
      unsigned int acc_format;      /* accepted PCM formats */
      int acc_channels; /* accepted channels */
      int acc_width;          /* accepted sample width */
      int acc_rates;          /* accepted sample rates */
      int mode;         /* MODE */
      int run_channels; /* current CSP channels */
      int run_width;          /* current sample width */
      int version;            /* CSP version (0x10 - 0x1f) */
      int running;            /* running state */

      snd_sb_csp_ops_t ops;   /* operators */

      spinlock_t q_lock;      /* locking */
      int q_enabled;          /* enabled flag */
      int qpos_left;          /* left position */
      int qpos_right;         /* right position */
      int qpos_changed; /* position changed flag */

      snd_kcontrol_t *qsound_switch;
      snd_kcontrol_t *qsound_space;

      struct semaphore access_mutex;      /* locking */
};

int snd_sb_csp_new(sb_t *chip, int device, snd_hwdep_t ** rhwdep);
#endif

#endif /* __SOUND_SB16_CSP */

Generated by  Doxygen 1.6.0   Back to index