patch-2.1.101 linux/drivers/sbus/audio/audio.h

• Lines: 385
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.100/linux/drivers/sbus/audio/audio.h
• Orig date: Mon Jan 12 15:15:45 1998

diff -u --recursive --new-file v2.1.100/linux/drivers/sbus/audio/audio.h linux/drivers/sbus/audio/audio.h
@@ -1,384 +0,0 @@
-/*
- * drivers/sbus/audio/audio.h
- *
- * Sparc Audio Midlayer
- * Copyright (C) 1996 Thomas K. Dyas (tdyas@noc.rutgers.edu)
- */
-
-#ifndef _AUDIO_H_
-#define _AUDIO_H_
-
-/*
- *	SunOS/Solaris /dev/audio interface
- */
-
-#include <linux/types.h>
-#include <linux/time.h>
-#include <linux/ioctl.h>
-
-/*
- * This structure contains state information for audio device IO streams.
- */
-typedef struct audio_prinfo {
-	/*
-	 * The following values describe the audio data encoding.
-	 */
-	unsigned int sample_rate;	/* samples per second */
-	unsigned int channels;	/* number of interleaved channels */
-	unsigned int precision;	/* bit-width of each sample */
-	unsigned int encoding;	/* data encoding method */
-
-	/*
-	 * The following values control audio device configuration
-	 */
-	unsigned int gain;		/* gain level: 0 - 255 */
-	unsigned int port;		/* selected I/O port (see below) */
-	unsigned int avail_ports;	/* available I/O ports (see below) */
-	unsigned int _xxx[2];		/* Reserved for future use */
-
-	unsigned int buffer_size;	/* I/O buffer size */
-
-	/*
-	 * The following values describe driver state
-	 */
-	unsigned int samples;		/* number of samples converted */
-	unsigned int eof;		/* End Of File counter (play only) */
-
-	unsigned char	pause;		/* non-zero for pause, zero to resume */
-	unsigned char	error;		/* non-zero if overflow/underflow */
-	unsigned char	waiting;	/* non-zero if a process wants access */
-	unsigned char balance;	/* stereo channel balance */
-
-	unsigned short minordev;
-
-	/*
-	 * The following values are read-only state flags
-	 */
-	unsigned char open;		/* non-zero if open access permitted */
-	unsigned char active;		/* non-zero if I/O is active */
-} audio_prinfo_t;
-
-
-/*
- * This structure describes the current state of the audio device.
- */
-typedef struct audio_info {
-	/*
-	 * Per-stream information
-	 */
-	audio_prinfo_t play;	/* output status information */
-	audio_prinfo_t record;	/* input status information */
-
-	/*
-	 * Per-unit/channel information
-	 */
-	unsigned int monitor_gain;	/* input to output mix: 0 - 255 */
-	unsigned char output_muted;	/* non-zero if output is muted */
-	unsigned char _xxx[3];	/* Reserved for future use */
-	unsigned int _yyy[3];		/* Reserved for future use */
-} audio_info_t;
-
-
-/*
- * Audio encoding types
- */
-#define	AUDIO_ENCODING_NONE	(0)	/* no encoding assigned	  */
-#define	AUDIO_ENCODING_ULAW	(1)	/* u-law encoding	  */
-#define	AUDIO_ENCODING_ALAW	(2)	/* A-law encoding	  */
-#define	AUDIO_ENCODING_LINEAR	(3)	/* Linear PCM encoding	  */
-#define	AUDIO_ENCODING_DVI	(104)	/* DVI ADPCM		  */
-#define	AUDIO_ENCODING_LINEAR8	(105)	/* 8 bit UNSIGNED	  */
-#define	AUDIO_ENCODING_LINEARLE	(106)	/* Linear PCM LE encoding */
-
-/*
- * These ranges apply to record, play, and monitor gain values
- */
-#define	AUDIO_MIN_GAIN	(0)	/* minimum gain value */
-#define	AUDIO_MAX_GAIN	(255)	/* maximum gain value */
-
-/*
- * These values apply to the balance field to adjust channel gain values
- */
-#define	AUDIO_LEFT_BALANCE	(0)	/* left channel only	*/
-#define	AUDIO_MID_BALANCE	(32)	/* equal left/right channel */
-#define	AUDIO_RIGHT_BALANCE	(64)	/* right channel only	*/
-#define	AUDIO_BALANCE_SHIFT	(3)
-
-/*
- * Generic minimum/maximum limits for number of channels, both modes
- */
-#define	AUDIO_MIN_PLAY_CHANNELS	(1)
-#define	AUDIO_MAX_PLAY_CHANNELS	(4)
-#define	AUDIO_MIN_REC_CHANNELS	(1)
-#define	AUDIO_MAX_REC_CHANNELS	(4)
-
-/*
- * Generic minimum/maximum limits for sample precision
- */
-#define	AUDIO_MIN_PLAY_PRECISION	(8)
-#define	AUDIO_MAX_PLAY_PRECISION	(32)
-#define	AUDIO_MIN_REC_PRECISION		(8)
-#define	AUDIO_MAX_REC_PRECISION		(32)
-
-/*
- * Define some convenient names for typical audio ports
- */
-/*
- * output ports (several may be enabled simultaneously)
- */
-#define	AUDIO_SPEAKER		0x01	/* output to built-in speaker */
-#define	AUDIO_HEADPHONE		0x02	/* output to headphone jack */
-#define	AUDIO_LINE_OUT		0x04	/* output to line out	 */
-
-/*
- * input ports (usually only one at a time)
- */
-#define	AUDIO_MICROPHONE	0x01	/* input from microphone */
-#define	AUDIO_LINE_IN		0x02	/* input from line in	 */
-#define	AUDIO_CD		0x04	/* input from on-board CD inputs */
-#define	AUDIO_INTERNAL_CD_IN	AUDIO_CD	/* input from internal CDROM */
-/* Supposedly an undocumented feature of the 4231 */
-#define AUDIO_ANALOG_LOOPBACK   0x40
-
-
-/*
- * This macro initializes an audio_info structure to 'harmless' values.
- * Note that (~0) might not be a harmless value for a flag that was
- * a signed int.
- */
-#define	AUDIO_INITINFO(i)	{					\
-	unsigned int	*__x__;						\
-	for (__x__ = (unsigned int *)(i);				\
-	    (char *) __x__ < (((char *)(i)) + sizeof (audio_info_t));	\
-	    *__x__++ = ~0);						\
-}
-
-
-/*
- * These allow testing for what the user wants to set 
- */
-#define AUD_INITVALUE   (~0)
-#define Modify(X)       ((unsigned int)(X) != AUD_INITVALUE)
-#define Modifys(X)      ((X) != (unsigned short)AUD_INITVALUE)
-#define Modifyc(X)      ((X) != (unsigned char)AUD_INITVALUE)
-
-/*
- * Parameter for the AUDIO_GETDEV ioctl to determine current
- * audio devices.
- */
-#define	MAX_AUDIO_DEV_LEN	(16)
-typedef struct audio_device {
-	char name[MAX_AUDIO_DEV_LEN];
-	char version[MAX_AUDIO_DEV_LEN];
-	char config[MAX_AUDIO_DEV_LEN];
-} audio_device_t;
-
-
-/*
- * Ioctl calls for the audio device.
- */
-
-/*
- * AUDIO_GETINFO retrieves the current state of the audio device.
- *
- * AUDIO_SETINFO copies all fields of the audio_info structure whose
- * values are not set to the initialized value (-1) to the device state.
- * It performs an implicit AUDIO_GETINFO to return the new state of the
- * device.  Note that the record.samples and play.samples fields are set
- * to the last value before the AUDIO_SETINFO took effect.  This allows
- * an application to reset the counters while atomically retrieving the
- * last value.
- *
- * AUDIO_DRAIN suspends the calling process until the write buffers are
- * empty.
- *
- * AUDIO_GETDEV returns a structure of type audio_device_t which contains
- * three strings.  The string "name" is a short identifying string (for
- * example, the SBus Fcode name string), the string "version" identifies
- * the current version of the device, and the "config" string identifies
- * the specific configuration of the audio stream.  All fields are
- * device-dependent -- see the device specific manual pages for details.
- */
-#define	AUDIO_GETINFO	_IOR('A', 1, audio_info_t)
-#define	AUDIO_SETINFO	_IOWR('A', 2, audio_info_t)
-#define	AUDIO_DRAIN	_IO('A', 3)
-#define	AUDIO_GETDEV	_IOR('A', 4, audio_device_t)
-#define	AUDIO_GETDEV_SUNOS	_IOR('A', 4, int)
-
-/* Define possible audio hardware configurations for 
- * old SunOS-style AUDIO_GETDEV ioctl */
-
-#define AUDIO_DEV_UNKNOWN       (0)     /* not defined */
-#define AUDIO_DEV_AMD           (1)     /* audioamd device */
-#define AUDIO_DEV_SPEAKERBOX    (2)     /* dbri device with speakerbox */
-#define AUDIO_DEV_CODEC         (3)     /* dbri device (internal speaker) */
-#define AUDIO_DEV_CS4231        (5)     /* cs4231 device */
-
-/*
- * The following ioctl sets the audio device into an internal loopback mode,
- * if the hardware supports this.  The argument is TRUE to set loopback,
- * FALSE to reset to normal operation.  If the hardware does not support
- * internal loopback, the ioctl should fail with EINVAL.
- */
-#define	AUDIO_DIAG_LOOPBACK	_IOW('A', 101, int)
-
-#ifdef notneeded
-/*
- * Structure sent up as a M_PROTO message on trace streams
- */
-typedef struct audtrace_hdr audtrace_hdr_t;
-struct audtrace_hdr {
-	unsigned int seq;		/* Sequence number (per-aud_stream) */
-	int type;		/* device-dependent */
-	struct timeval timestamp;
-	char _f[8];		/* filler */
-};
-#endif
-
-/*
- *	Linux kernel internal implementation.
- */
-
-#ifdef __KERNEL__
-
-#include <linux/types.h>
-#include <linux/fs.h>
-#include <linux/tqueue.h>
-#include <linux/wait.h>
-
-#define	SDF_OPEN_WRITE	0x00000001
-#define	SDF_OPEN_READ	0x00000002
-
-struct sparcaudio_driver
-{
-	const char * name;
-	struct sparcaudio_operations *ops;
-	void *private;
-	unsigned long flags;
-
-	/* Processes blocked on open() sit here. */
-	struct wait_queue *open_wait;
-
-	/* Task queue for this driver's bottom half. */
-	struct tq_struct tqueue;
-
-	/* Support for a circular queue of output buffers. */
-	__u8 **output_buffers;
-	size_t *output_sizes, output_size;
-	int num_output_buffers, output_front, output_rear;
-	int output_count, output_active;
-	struct wait_queue *output_write_wait, *output_drain_wait;
-
-	/* Support for a circular queue of input buffers. */
-	__u8 **input_buffers;
-	int input_offset;
-	int num_input_buffers, input_front, input_rear;
-	int input_count, input_active;
-	struct wait_queue *input_read_wait;
-};
-
-struct sparcaudio_operations
-{
-	int (*open)(struct inode *, struct file *, struct sparcaudio_driver *);
-	void (*release)(struct inode *, struct file *, struct sparcaudio_driver *);
-	int (*ioctl)(struct inode *, struct file *, unsigned int, unsigned long,
-		     struct sparcaudio_driver *);
-
-	/* Ask driver to begin playing a buffer. */
-	void (*start_output)(struct sparcaudio_driver *, __u8 *, unsigned long);
-
-	/* Ask driver to stop playing a buffer. */
-	void (*stop_output)(struct sparcaudio_driver *);
-
-	/* Ask driver to begin recording into a buffer. */
-	void (*start_input)(struct sparcaudio_driver *, __u8 *, unsigned long);
-
-	/* Ask driver to stop recording. */
-	void (*stop_input)(struct sparcaudio_driver *);
-
-	/* Return driver name/version to caller. (/dev/audio specific) */
-	void (*sunaudio_getdev)(struct sparcaudio_driver *, audio_device_t *);
-
-        /* Get and set the output volume. (0-255) */
-        int (*set_output_volume)(struct sparcaudio_driver *, int);
-        int (*get_output_volume)(struct sparcaudio_driver *);
-
-        /* Get and set the input volume. (0-255) */
-        int (*set_input_volume)(struct sparcaudio_driver *, int);
-        int (*get_input_volume)(struct sparcaudio_driver *);
-
-        /* Get and set the monitor volume. (0-255) */
-        int (*set_monitor_volume)(struct sparcaudio_driver *, int);
-        int (*get_monitor_volume)(struct sparcaudio_driver *);
-
-        /* Get and set the output balance. (0-64) */
-        int (*set_output_balance)(struct sparcaudio_driver *, int);
-        int (*get_output_balance)(struct sparcaudio_driver *);
-
-        /* Get and set the input balance. (0-64) */
-        int (*set_input_balance)(struct sparcaudio_driver *, int);
-        int (*get_input_balance)(struct sparcaudio_driver *);
-
-        /* Get and set the output channels. (1-4) */
-        int (*set_output_channels)(struct sparcaudio_driver *, int);
-        int (*get_output_channels)(struct sparcaudio_driver *);
-
-        /* Get and set the input channels. (1-4) */
-        int (*set_input_channels)(struct sparcaudio_driver *, int);
-        int (*get_input_channels)(struct sparcaudio_driver *);
-
-        /* Get and set the output precision. (8-32) */
-        int (*set_output_precision)(struct sparcaudio_driver *, int);
-        int (*get_output_precision)(struct sparcaudio_driver *);
-
-        /* Get and set the input precision. (8-32) */
-        int (*set_input_precision)(struct sparcaudio_driver *, int);
-        int (*get_input_precision)(struct sparcaudio_driver *);
-
-        /* Get and set the output port. () */
-        int (*set_output_port)(struct sparcaudio_driver *, int);
-        int (*get_output_port)(struct sparcaudio_driver *);
-
-        /* Get and set the input port. () */
-        int (*set_input_port)(struct sparcaudio_driver *, int);
-        int (*get_input_port)(struct sparcaudio_driver *);
-
-        /* Get and set the output encoding. () */
-        int (*set_output_encoding)(struct sparcaudio_driver *, int);
-        int (*get_output_encoding)(struct sparcaudio_driver *);
-
-        /* Get and set the input encoding. () */
-        int (*set_input_encoding)(struct sparcaudio_driver *, int);
-        int (*get_input_encoding)(struct sparcaudio_driver *);
-
-        /* Get and set the output rate. () */
-        int (*set_output_rate)(struct sparcaudio_driver *, int);
-        int (*get_output_rate)(struct sparcaudio_driver *);
-
-        /* Get and set the input rate. () */
-        int (*set_input_rate)(struct sparcaudio_driver *, int);
-        int (*get_input_rate)(struct sparcaudio_driver *);
-
-	/* Return driver number to caller. (SunOS /dev/audio specific) */
-	int (*sunaudio_getdev_sunos)(struct sparcaudio_driver *);
-
-	/* Get available ports */
-	int (*get_output_ports)(struct sparcaudio_driver *);
-	int (*get_input_ports)(struct sparcaudio_driver *);
-
-	/* Get and set output mute */
-	int (*set_output_muted)(struct sparcaudio_driver *, int);
-	int (*get_output_muted)(struct sparcaudio_driver *);
-};
-
-extern int register_sparcaudio_driver(struct sparcaudio_driver *);
-extern int unregister_sparcaudio_driver(struct sparcaudio_driver *);
-extern void sparcaudio_output_done(struct sparcaudio_driver *);
-extern void sparcaudio_input_done(struct sparcaudio_driver *);
-extern int sparcaudio_init(void);
-extern int amd7930_init(void);
-extern int cs4231_init(void);
-
-#endif  /* __KERNEL__ */
-
-#endif  /* _AUDIO_H */