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DEFINITIONS
This source file includes following definitions.
- ioctl_return
- dmasound_set_volume
- dmasound_set_bass
- dmasound_set_treble
- dmasound_set_gain
#ifndef _dmasound_h_
/*
* linux/sound/oss/dmasound/dmasound.h
*
*
* Minor numbers for the sound driver.
*
* Unfortunately Creative called the codec chip of SB as a DSP. For this
* reason the /dev/dsp is reserved for digitized audio use. There is a
* device for true DSP processors but it will be called something else.
* In v3.0 it's /dev/sndproc but this could be a temporary solution.
*/
#define _dmasound_h_
#include <linux/types.h>
#define SND_NDEVS 256 /* Number of supported devices */
#define SND_DEV_CTL 0 /* Control port /dev/mixer */
#define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM
synthesizer and MIDI output) */
#define SND_DEV_MIDIN 2 /* Raw midi access */
#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
#define SND_DEV_STATUS 6 /* /dev/sndstat */
/* #7 not in use now. Was in 2.4. Free for use after v3.0. */
#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
#define SND_DEV_PSS SND_DEV_SNDPROC
/* switch on various prinks */
#define DEBUG_DMASOUND 1
#define MAX_AUDIO_DEV 5
#define MAX_MIXER_DEV 4
#define MAX_SYNTH_DEV 3
#define MAX_MIDI_DEV 6
#define MAX_TIMER_DEV 3
#define MAX_CATCH_RADIUS 10
#define le2be16(x) (((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))
#define le2be16dbl(x) (((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))
#define IOCTL_IN(arg, ret) \
do { int error = get_user(ret, (int __user *)(arg)); \
if (error) return error; \
} while (0)
#define IOCTL_OUT(arg, ret) ioctl_return((int __user *)(arg), ret)
static inline int ioctl_return(int __user *addr, int value)
{
return value < 0 ? value : put_user(value, addr);
}
/*
* Configuration
*/
#undef HAS_8BIT_TABLES
#if defined(CONFIG_DMASOUND_ATARI) || defined(CONFIG_DMASOUND_ATARI_MODULE) ||\
defined(CONFIG_DMASOUND_PAULA) || defined(CONFIG_DMASOUND_PAULA_MODULE) ||\
defined(CONFIG_DMASOUND_Q40) || defined(CONFIG_DMASOUND_Q40_MODULE)
#define HAS_8BIT_TABLES
#define MIN_BUFFERS 4
#define MIN_BUFSIZE (1<<12) /* in bytes (- where does this come from ?) */
#define MIN_FRAG_SIZE 8 /* not 100% sure about this */
#define MAX_BUFSIZE (1<<17) /* Limit for Amiga is 128 kb */
#define MAX_FRAG_SIZE 15 /* allow *4 for mono-8 => stereo-16 (for multi) */
#else /* is pmac and multi is off */
#define MIN_BUFFERS 2
#define MIN_BUFSIZE (1<<8) /* in bytes */
#define MIN_FRAG_SIZE 8
#define MAX_BUFSIZE (1<<18) /* this is somewhat arbitrary for pmac */
#define MAX_FRAG_SIZE 16 /* need to allow *4 for mono-8 => stereo-16 */
#endif
#define DEFAULT_N_BUFFERS 4
#define DEFAULT_BUFF_SIZE (1<<15)
/*
* Initialization
*/
extern int dmasound_init(void);
#ifdef MODULE
extern void dmasound_deinit(void);
#else
#define dmasound_deinit() do { } while (0)
#endif
/* description of the set-up applies to either hard or soft settings */
typedef struct {
int format; /* AFMT_* */
int stereo; /* 0 = mono, 1 = stereo */
int size; /* 8/16 bit*/
int speed; /* speed */
} SETTINGS;
/*
* Machine definitions
*/
typedef struct {
const char *name;
const char *name2;
struct module *owner;
void *(*dma_alloc)(unsigned int, gfp_t);
void (*dma_free)(void *, unsigned int);
int (*irqinit)(void);
#ifdef MODULE
void (*irqcleanup)(void);
#endif
void (*init)(void);
void (*silence)(void);
int (*setFormat)(int);
int (*setVolume)(int);
int (*setBass)(int);
int (*setTreble)(int);
int (*setGain)(int);
void (*play)(void);
void (*record)(void); /* optional */
void (*mixer_init)(void); /* optional */
int (*mixer_ioctl)(u_int, u_long); /* optional */
int (*write_sq_setup)(void); /* optional */
int (*read_sq_setup)(void); /* optional */
int (*sq_open)(mode_t); /* optional */
int (*state_info)(char *, size_t); /* optional */
void (*abort_read)(void); /* optional */
int min_dsp_speed;
int max_dsp_speed;
int version ;
int hardware_afmts ; /* OSS says we only return h'ware info */
/* when queried via SNDCTL_DSP_GETFMTS */
int capabilities ; /* low-level reply to SNDCTL_DSP_GETCAPS */
SETTINGS default_hard ; /* open() or init() should set something valid */
SETTINGS default_soft ; /* you can make it look like old OSS, if you want to */
} MACHINE;
/*
* Low level stuff
*/
typedef struct {
ssize_t (*ct_ulaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
ssize_t (*ct_alaw)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
ssize_t (*ct_s8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
ssize_t (*ct_u8)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
ssize_t (*ct_s16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
ssize_t (*ct_u16be)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
ssize_t (*ct_s16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
ssize_t (*ct_u16le)(const u_char __user *, size_t, u_char *, ssize_t *, ssize_t);
} TRANS;
struct sound_settings {
MACHINE mach; /* machine dependent things */
SETTINGS hard; /* hardware settings */
SETTINGS soft; /* software settings */
SETTINGS dsp; /* /dev/dsp default settings */
TRANS *trans_write; /* supported translations */
int volume_left; /* volume (range is machine dependent) */
int volume_right;
int bass; /* tone (range is machine dependent) */
int treble;
int gain;
int minDev; /* minor device number currently open */
spinlock_t lock;
};
extern struct sound_settings dmasound;
#ifdef HAS_8BIT_TABLES
extern char dmasound_ulaw2dma8[];
extern char dmasound_alaw2dma8[];
#endif
/*
* Mid level stuff
*/
static inline int dmasound_set_volume(int volume)
{
return dmasound.mach.setVolume(volume);
}
static inline int dmasound_set_bass(int bass)
{
return dmasound.mach.setBass ? dmasound.mach.setBass(bass) : 50;
}
static inline int dmasound_set_treble(int treble)
{
return dmasound.mach.setTreble ? dmasound.mach.setTreble(treble) : 50;
}
static inline int dmasound_set_gain(int gain)
{
return dmasound.mach.setGain ? dmasound.mach.setGain(gain) : 100;
}
/*
* Sound queue stuff, the heart of the driver
*/
struct sound_queue {
/* buffers allocated for this queue */
int numBufs; /* real limits on what the user can have */
int bufSize; /* in bytes */
char **buffers;
/* current parameters */
int locked ; /* params cannot be modified when != 0 */
int user_frags ; /* user requests this many */
int user_frag_size ; /* of this size */
int max_count; /* actual # fragments <= numBufs */
int block_size; /* internal block size in bytes */
int max_active; /* in-use fragments <= max_count */
/* it shouldn't be necessary to declare any of these volatile */
int front, rear, count;
int rear_size;
/*
* The use of the playing field depends on the hardware
*
* Atari, PMac: The number of frames that are loaded/playing
*
* Amiga: Bit 0 is set: a frame is loaded
* Bit 1 is set: a frame is playing
*/
int active;
wait_queue_head_t action_queue, open_queue, sync_queue;
int open_mode;
int busy, syncing, xruns, died;
};
#define SLEEP(queue) interruptible_sleep_on_timeout(&queue, HZ)
#define WAKE_UP(queue) (wake_up_interruptible(&queue))
extern struct sound_queue dmasound_write_sq;
#define write_sq dmasound_write_sq
extern int dmasound_catchRadius;
#define catchRadius dmasound_catchRadius
/* define the value to be put in the byte-swap reg in mac-io
when we want it to swap for us.
*/
#define BS_VAL 1
#define SW_INPUT_VOLUME_SCALE 4
#define SW_INPUT_VOLUME_DEFAULT (128 / SW_INPUT_VOLUME_SCALE)
extern int expand_read_bal; /* Balance factor for reading */
extern uint software_input_volume; /* software implemented recording volume! */
#endif /* _dmasound_h_ */