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sb16_csp.h
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#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 */