soundcard.h

LINUX 1.0 内核c源代码

#ifndef SOUNDCARD_H
#define SOUNDCARD_H
/*
 * Copyright by Hannu Savolainen 1993
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * 
 */

 /* 
  * If you make modifications to this file, please contact me before
  * distributing the modified version. There is already enough 
  * divercity in the world.
  *
  * Regards,
  * Hannu Savolainen
  * [e-mail]
  */

#define SOUND_VERSION	203
#define VOXWARE

#include <sys/ioctl.h>

/*
 *	Supported card ID numbers (Should be somewhere else?)
 */

#define SNDCARD_ADLIB	1
#define SNDCARD_SB	2
#define SNDCARD_PAS	3
#define SNDCARD_GUS	4
#define SNDCARD_MPU401	5
#define SNDCARD_SB16	6
#define SNDCARD_SB16MIDI 7

/***********************************
 * IOCTL Commands for /dev/sequencer
 */

#ifndef _IOWR
/*	@(#)ioctlp.h */

/* Ioctl's have the command encoded in the lower word,
 * and the size of any in or out parameters in the upper
 * word.  The high 2 bits of the upper word are used
 * to encode the in/out status of the parameter; for now
 * we restrict parameters to at most 128 bytes.
 */
/* #define	IOCTYPE		(0xff<<8) */
#define	IOCPARM_MASK	0x7f		/* parameters must be < 128 bytes */
#define	IOC_VOID	0x00000000	/* no parameters */
#define	IOC_OUT		0x20000000	/* copy out parameters */
#define	IOC_IN		0x40000000	/* copy in parameters */
#define	IOC_INOUT	(IOC_IN|IOC_OUT)
/* the 0x20000000 is so we can distinguish new ioctl's from old */
#define	_IO(x,y)	((int)(IOC_VOID|(x<<8)|y))
#define	_IOR(x,y,t)	((int)(IOC_OUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
#define	_IOW(x,y,t)	((int)(IOC_IN|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
/* this should be _IORW, but stdio got there first */
#define	_IOWR(x,y,t)	((int)(IOC_INOUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
#endif  /* !_IOWR */

#define SNDCTL_SEQ_RESET		_IO  ('Q', 0)
#define SNDCTL_SEQ_SYNC			_IO  ('Q', 1)
#define SNDCTL_SYNTH_INFO		_IOWR('Q', 2, struct synth_info)
#define SNDCTL_SEQ_CTRLRATE		_IOWR('Q', 3, int)	/* Set/get timer resolution (HZ) */
#define SNDCTL_SEQ_GETOUTCOUNT		_IOR ('Q', 4, int)
#define SNDCTL_SEQ_GETINCOUNT		_IOR ('Q', 5, int)
#define SNDCTL_SEQ_PERCMODE		_IOW ('Q', 6, int)
#define SNDCTL_FM_LOAD_INSTR		_IOW ('Q', 7, struct sbi_instrument)	/* Valid for FM only */
#define SNDCTL_SEQ_TESTMIDI		_IOW ('Q', 8, int)
#define SNDCTL_SEQ_RESETSAMPLES		_IOW ('Q', 9, int)
#define SNDCTL_SEQ_NRSYNTHS		_IOR ('Q',10, int)
#define SNDCTL_SEQ_NRMIDIS		_IOR ('Q',11, int)
#define SNDCTL_MIDI_INFO		_IOWR('Q',12, struct midi_info)
#define SNDCTL_SEQ_TRESHOLD		_IOW ('Q',13, int)
#define SNDCTL_SYNTH_MEMAVL		_IOWR('Q',14, int)	/* in=dev#, out=memsize */
#define SNDCTL_FM_4OP_ENABLE		_IOW ('Q',15, int)	/* in=dev# */
#define SNDCTL_PMGR_ACCESS		_IOWR('Q',16, struct patmgr_info)

/*
 *	Sample loading mechanism for internal synthesizers (/dev/sequencer)
 *	The following patch_info structure has been designed to support
 *	Gravis UltraSound. It tries to be universal format for uploading
 *	sample based patches but is propably too limited.
 */

struct patch_info {
		short key;		/* Use GUS_PATCH here */
#define GUS_PATCH	0x04fd
#define OBSOLETE_GUS_PATCH	0x02fd
		short device_no;	/* Synthesizer number */
		short instr_no;		/* Midi pgm# */

		unsigned long mode;
/*
 * The least significant byte has the same format than the GUS .PAT
 * files
 */
#define WAVE_16_BITS	0x01	/* bit 0 = 8 or 16 bit wave data. */
#define WAVE_UNSIGNED	0x02	/* bit 1 = Signed - Unsigned data. */
#define WAVE_LOOPING	0x04	/* bit 2 = looping enabled-1. */
#define WAVE_BIDIR_LOOP	0x08	/* bit 3 = Set is bidirectional looping. */
#define WAVE_LOOP_BACK	0x10	/* bit 4 = Set is looping backward. */
#define WAVE_SUSTAIN_ON	0x20	/* bit 5 = Turn sustaining on. (Env. pts. 3)*/
#define WAVE_ENVELOPES	0x40	/* bit 6 = Enable envelopes - 1 */
				/* 	(use the env_rate/env_offs fields). */
/* Linux specific bits */
#define WAVE_VIBRATO	0x00010000	/* The vibrato info is valid */
#define WAVE_TREMOLO	0x00020000	/* The tremolo info is valid */
#define WAVE_SCALE	0x00040000	/* The scaling info is valid */
/* Other bits must be zeroed */

		long len;	/* Size of the wave data in bytes */
		long loop_start, loop_end; /* Byte offsets from the beginning */

/* 
 * The base_freq and base_note fields are used when computing the
 * playback speed for a note. The base_note defines the tone frequency
 * which is heard if the sample is played using the base_freq as the
 * playback speed.
 *
 * The low_note and high_note fields define the minimum and maximum note
 * frequencies for which this sample is valid. It is possible to define
 * more than one samples for a instrument number at the same time. The
 * low_note and high_note fields are used to select the most suitable one.
 *
 * The fields base_note, high_note and low_note should contain
 * the note frequency multiplied by 1000. For example value for the
 * middle A is 440*1000.
 */

		unsigned int base_freq;
		unsigned long base_note;
		unsigned long high_note;
		unsigned long low_note;
		int panning;	/* -128=left, 127=right */
		int detuning;

/*	New fields introduced in version 1.99.5	*/

       /* Envelope. Enabled by mode bit WAVE_ENVELOPES	*/
		unsigned char	env_rate[ 6 ];	 /* GUS HW ramping rate */
		unsigned char	env_offset[ 6 ]; /* 255 == 100% */

	/* 
	 * The tremolo, vibrato and scale info are not supported yet.
	 * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
	 * WAVE_SCALE
	 */

		unsigned char	tremolo_sweep;
		unsigned char	tremolo_rate;
		unsigned char	tremolo_depth;
	
		unsigned char	vibrato_sweep;
		unsigned char	vibrato_rate;
		unsigned char	vibrato_depth;

		int		scale_frequency;
		unsigned int	scale_factor;		/* from 0 to 2048 or 0 to 2 */
	
	        int		volume;
	        int		spare[4];
		char data[1];	/* The waveform data starts here */
	};


/*
 * Patch management interface (/dev/sequencer, /dev/patmgr#)
 * Don't use these calls if you want to maintain compatibility with
 * the future versions of the driver.
 */

#define 	PS_NO_PATCHES		0	/* No patch support on device */
#define		PS_MGR_NOT_OK		1	/* Plain patch support (no mgr) */
#define		PS_MGR_OK		2	/* Patch manager supported */
#define		PS_MANAGED		3	/* Patch manager running */

#define SNDCTL_PMGR_IFACE		_IOWR('P', 1, struct patmgr_info)

/*
 * The patmgr_info is a fixed size structure which is used for two
 * different purposes. The intended use is for communication between
 * the application using /dev/sequencer and the patch manager daemon
 * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
 *
 * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
 * a patch manager daemon to read and write device parameters. This
 * ioctl available through /dev/sequencer also. Avoid using it since it's
 * extremely hardware dependent. In addition access trough /dev/sequencer 
 * may confuse the patch manager daemon.
 */

struct patmgr_info {	/* Note! size must be < 4k since kmalloc() is used */
	  unsigned long key;	/* Don't worry. Reserved for communication
	  			   between the patch manager and the driver. */
#define PM_K_EVENT		1 /* Event from the /dev/sequencer driver */
#define PM_K_COMMAND		2 /* Request from a application */
#define PM_K_RESPONSE		3 /* From patmgr to application */
#define PM_ERROR		4 /* Error returned by the patmgr */
	  int device;
	  int command;

/* 
 * Commands 0x000 to 0xfff reserved for patch manager programs 
 */
#define PM_GET_DEVTYPE	1	/* Returns type of the patch mgr interface of dev */
#define		PMTYPE_FM2	1	/* 2 OP fm */
#define		PMTYPE_FM4	2	/* Mixed 4 or 2 op FM (OPL-3) */
#define		PMTYPE_WAVE	3	/* Wave table synthesizer (GUS) */
#define PM_GET_NRPGM	2	/* Returns max # of midi programs in parm1 */
#define PM_GET_PGMMAP	3	/* Returns map of loaded midi programs in data8 */
#define PM_GET_PGM_PATCHES 4	/* Return list of patches of a program (parm1) */
#define PM_GET_PATCH	5	/* Return patch header of patch parm1 */
#define PM_SET_PATCH	6	/* Set patch header of patch parm1 */
#define PM_READ_PATCH	7	/* Read patch (wave) data */
#define PM_WRITE_PATCH	8	/* Write patch (wave) data */

/*
 * Commands 0x1000 to 0xffff are for communication between the patch manager
 * and the client
 */
#define _PM_LOAD_PATCH	0x100

/* 
 * Commands above 0xffff reserved for device specific use
 */

	  long parm1;
	  long parm2;
	  long parm3;

	  union {
		unsigned char data8[4000];
		unsigned short data16[2000];
		unsigned long data32[1000];
		struct patch_info patch;
	  } data;
	};

/*
 * When a patch manager daemon is present, it will be informed by the
 * driver when something important happens. For example when the
 * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
 * returned. The command field contains the event type:
 */
#define PM_E_OPENED		1	/* /dev/sequencer opened */
#define PM_E_CLOSED		2	/* /dev/sequencer closed */
#define PM_E_PATCH_RESET	3	/* SNDCTL_RESETSAMPLES called */
#define PM_E_PATCH_LOADED	4	/* A patch has been loaded by appl */

/*
 * /dev/sequencer input events.
 *
 * The data written to the /dev/sequencer is a stream of events. Events
 * are records of 4 or 8 bytes. The first byte defines the size. 
 * Any number of events can be written with a write call. There
 * is a set of macros for sending these events. Use these macros if you
 * want to maximize portability of your program.
 *
 * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
 * (All input events are currently 4 bytes long. Be prepared to support
 * 8 byte events also. If you receive any event having first byte >= 0xf0,
 * it's a 8 byte event.
 *
 * The events are documented at the end of this file.
 *
 * Normal events (4 bytes)
 * There is also a 8 byte version of most of the 4 byte events. The
 * 8 byte one is recommended.
 */
#define SEQ_NOTEOFF		0
#define SEQ_FMNOTEOFF		SEQ_NOTEOFF	/* Just old name */
#define SEQ_NOTEON		1
#define	SEQ_FMNOTEON		SEQ_NOTEON
#define SEQ_WAIT		2
#define SEQ_PGMCHANGE		3
#define SEQ_FMPGMCHANGE		SEQ_PGMCHANGE
#define SEQ_SYNCTIMER		4
#define SEQ_MIDIPUTC		5
#define SEQ_DRUMON		6	/*** OBSOLETE ***/
#define SEQ_DRUMOFF		7	/*** OBSOLETE ***/
#define SEQ_ECHO		8	/* For synching programs with output */
#define SEQ_AFTERTOUCH		9
#define SEQ_CONTROLLER		10
#define    CTRL_PITCH_BENDER		255
#define    CTRL_PITCH_BENDER_RANGE	254
#define    CTRL_EXPRESSION		253
#define    CTRL_MAIN_VOLUME		252
#define SEQ_BALANCE		11

/*
 * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
 *	 input events.
 */

/*
 * Event codes 0xf0 to 0xfc are reserved for future extensions.
 */

#define SEQ_FULLSIZE		0xfd	/* Long events */
/*
 *	SEQ_FULLSIZE events are used for loading patches/samples to the
 *	synthesizer devices. These events are passed directly to the driver
 *	of the associated synthesizer device. There is no limit to the size
 *	of the extended events. These events are not queued but executed
 *	immediately when the write() is called (execution can take several
 *	seconds of time). 
 *
 *	When a SEQ_FULLSIZE message is written to the device, it must
 *	be written using exactly one write() call. Other events cannot
 *	be mixed to the same write.
 *	
 *	For FM synths (YM3812/OPL3) use struct sbi_instrument and write it to the 
 *	/dev/sequencer. Don't write other data together with the instrument structure
 *	Set the key field of the structure to FM_PATCH. The device field is used to
 *	route the patch to the corresponding device.
 *
 *	For Gravis UltraSound use struct patch_info. Initialize the key field
 *      to GUS_PATCH.
 */
#define SEQ_PRIVATE		0xfe	/* Low level HW dependent events (8 bytes) */
#define SEQ_EXTENDED		0xff	/* Extended events (8 bytes) */

/*
 *	Extended events for synthesizers (8 bytes)
 *
 *	Format:
 *
 *		b0	= SEQ_EXTENDED
 *		b1	= command
 *		b2	= device
 *		b3-b7	= parameters
 *
 *	Command				b3	b4	b5	b6	b7
 *	----------------------------------------------------------------------------
 *	SEQ_NOTEON			voice	note	volume	0	0
 *	SEQ_NOTEOFF			voice	note	volume	0	0
 *	SEQ_PGMCHANGE			voice	pgm	0	0	0
 *	SEQ_DRUMON			(voice)	drum#	volume	0	0
 *	SEQ_DRUMOFF			(voice)	drum#	volume	0	0
 */

/*
 * Record for FM patches
 */

typedef unsigned char sbi_instr_data[32];

struct sbi_instrument {