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/usr/include/sound

Name	Size	Mode	Actions
intel/	-	0755	rm
sof/	-	0755	rm
asequencer.h	23808	0644	edit dl rm
asoc.h	20170	0644	edit dl rm
asound.h	55311	0644	edit dl rm
asound_fm.h	3637	0644	edit dl rm
compress_offload.h	7974	0644	edit dl rm
compress_params.h	17093	0644	edit dl rm
emu10k1.h	18889	0644	edit dl rm
fcp.h	3736	0644	edit dl rm
firewire.h	11016	0644	edit dl rm
hdsp.h	2076	0644	edit dl rm
hdspm.h	4486	0644	edit dl rm
sb16_csp.h	3563	0644	edit dl rm
scarlett2.h	1615	0644	edit dl rm
sfnt_info.h	6754	0644	edit dl rm
skl-tplg-interface.h	3811	0644	edit dl rm
snd_ar_tokens.h	7655	0644	edit dl rm
snd_sst_tokens.h	11754	0644	edit dl rm
tlv.h	4147	0644	edit dl rm
usb_stream.h	1238	0644	edit dl rm

Edit: /usr/include/sound/sfnt_info.h (6754B)

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
#ifndef __SOUND_SFNT_INFO_H
#define __SOUND_SFNT_INFO_H

/*
 *  Patch record compatible with AWE driver on OSS
 *
 *  Copyright (C) 1999-2000 Takashi Iwai
 */

#include <sound/asound.h>

/*
 * patch information record
 */

#ifdef SNDRV_BIG_ENDIAN
#define SNDRV_OSS_PATCHKEY(id) (0xfd00|id)
#else
#define SNDRV_OSS_PATCHKEY(id) ((id<<8)|0xfd)
#endif

/* patch interface header: 16 bytes */
struct soundfont_patch_info {
	unsigned short key;		/* use the key below */
#define SNDRV_OSS_SOUNDFONT_PATCH		SNDRV_OSS_PATCHKEY(0x07)

short device_no;		/* synthesizer number */
	unsigned short sf_id;		/* file id (should be zero) */
	short optarg;			/* optional argument */
	int len;			/* data length (without this header) */

short type;			/* patch operation type */
#define SNDRV_SFNT_LOAD_INFO		0	/* awe_voice_rec */
#define SNDRV_SFNT_LOAD_DATA		1	/* awe_sample_info */
#define SNDRV_SFNT_OPEN_PATCH	2	/* awe_open_parm */
#define SNDRV_SFNT_CLOSE_PATCH	3	/* none */
	/* 4 is obsolete */
#define SNDRV_SFNT_REPLACE_DATA	5	/* awe_sample_info (optarg=#channels)*/
#define SNDRV_SFNT_MAP_PRESET	6	/* awe_voice_map */
	/* 7 is not used */
#define SNDRV_SFNT_PROBE_DATA		8	/* optarg=sample */
#define SNDRV_SFNT_REMOVE_INFO		9	/* optarg=(bank<<8)|instr */

short reserved;			/* word alignment data */

/* the actual patch data begins after this */
};

/*
 * open patch
 */

#define SNDRV_SFNT_PATCH_NAME_LEN	32

struct soundfont_open_parm {
	unsigned short type;		/* sample type */
#define SNDRV_SFNT_PAT_TYPE_MISC	0
#define SNDRV_SFNT_PAT_TYPE_GUS	6
#define SNDRV_SFNT_PAT_TYPE_MAP	7
#define SNDRV_SFNT_PAT_LOCKED	0x100	/* lock the samples */
#define SNDRV_SFNT_PAT_SHARED	0x200	/* sample is shared */

short reserved;
	char name[SNDRV_SFNT_PATCH_NAME_LEN];
};

/*
 * raw voice information record
 */

/* wave table envelope & effect parameters to control EMU8000 */
struct soundfont_voice_parm {
	unsigned short moddelay;	/* modulation delay (0x8000) */
	unsigned short modatkhld;	/* modulation attack & hold time (0x7f7f) */
	unsigned short moddcysus;	/* modulation decay & sustain (0x7f7f) */
	unsigned short modrelease;	/* modulation release time (0x807f) */
	short modkeyhold, modkeydecay;	/* envelope change per key (not used) */
	unsigned short voldelay;	/* volume delay (0x8000) */
	unsigned short volatkhld;	/* volume attack & hold time (0x7f7f) */
	unsigned short voldcysus;	/* volume decay & sustain (0x7f7f) */
	unsigned short volrelease;	/* volume release time (0x807f) */
	short volkeyhold, volkeydecay;	/* envelope change per key (not used) */
	unsigned short lfo1delay;	/* LFO1 delay (0x8000) */
	unsigned short lfo2delay;	/* LFO2 delay (0x8000) */
	unsigned short pefe;		/* modulation pitch & cutoff (0x0000) */
	unsigned short fmmod;		/* LFO1 pitch & cutoff (0x0000) */
	unsigned short tremfrq;		/* LFO1 volume & freq (0x0000) */
	unsigned short fm2frq2;		/* LFO2 pitch & freq (0x0000) */
	unsigned char cutoff;		/* initial cutoff (0xff) */
	unsigned char filterQ;		/* initial filter Q [0-15] (0x0) */
	unsigned char chorus;		/* chorus send (0x00) */
	unsigned char reverb;		/* reverb send (0x00) */
	unsigned short reserved[4];	/* not used */
};

/* wave table parameters: 92 bytes */
struct soundfont_voice_info {
	unsigned short sf_id;		/* file id (should be zero) */
	unsigned short sample;		/* sample id */
	int start, end;			/* sample offset correction */
	int loopstart, loopend;		/* loop offset correction */
	short rate_offset;		/* sample rate pitch offset */
	unsigned short mode;		/* sample mode */
#define SNDRV_SFNT_MODE_ROMSOUND		0x8000
#define SNDRV_SFNT_MODE_STEREO		1
#define SNDRV_SFNT_MODE_LOOPING		2
#define SNDRV_SFNT_MODE_NORELEASE		4	/* obsolete */
#define SNDRV_SFNT_MODE_INIT_PARM		8

short root;			/* midi root key */
	short tune;			/* pitch tuning (in cents) */
	unsigned char low, high;	/* key note range */
	unsigned char vellow, velhigh;	/* velocity range */
	signed char fixkey, fixvel;	/* fixed key, velocity */
	signed char pan, fixpan;	/* panning, fixed panning */
	short exclusiveClass;		/* exclusive class (0 = none) */
	unsigned char amplitude;	/* sample volume (127 max) */
	unsigned char attenuation;	/* attenuation (0.375dB) */
	short scaleTuning;		/* pitch scale tuning(%), normally 100 */
	struct soundfont_voice_parm parm;	/* voice envelope parameters */
	unsigned short sample_mode;	/* sample mode_flag (set by driver) */
};

/* instrument info header: 4 bytes */
struct soundfont_voice_rec_hdr {
	unsigned char bank;		/* midi bank number */
	unsigned char instr;		/* midi preset number */
	char nvoices;			/* number of voices */
	char write_mode;		/* write mode; normally 0 */
#define SNDRV_SFNT_WR_APPEND		0	/* append anyway */
#define SNDRV_SFNT_WR_EXCLUSIVE		1	/* skip if already exists */
#define SNDRV_SFNT_WR_REPLACE		2	/* replace if already exists */
};

/*
 * sample wave information
 */

/* wave table sample header: 32 bytes */
struct soundfont_sample_info {
	unsigned short sf_id;		/* file id (should be zero) */
	unsigned short sample;		/* sample id */
	int start, end;			/* start & end offset */
	int loopstart, loopend;		/* loop start & end offset */
	int size;			/* size (0 = ROM) */
	short dummy;			/* not used */
	unsigned short mode_flags;	/* mode flags */
#define SNDRV_SFNT_SAMPLE_8BITS		1	/* wave data is 8bits */
#define SNDRV_SFNT_SAMPLE_UNSIGNED	2	/* wave data is unsigned */
#define SNDRV_SFNT_SAMPLE_NO_BLANK	4	/* no blank loop is attached */
#define SNDRV_SFNT_SAMPLE_SINGLESHOT	8	/* single-shot w/o loop */
#define SNDRV_SFNT_SAMPLE_BIDIR_LOOP	16	/* bidirectional looping */
#define SNDRV_SFNT_SAMPLE_STEREO_LEFT	32	/* stereo left sound */
#define SNDRV_SFNT_SAMPLE_STEREO_RIGHT	64	/* stereo right sound */
#define SNDRV_SFNT_SAMPLE_REVERSE_LOOP	128	/* reverse looping */
	unsigned int truesize;		/* used memory size (set by driver) */
};

/*
 * voice preset mapping (aliasing)
 */

struct soundfont_voice_map {
	int map_bank, map_instr, map_key;	/* key = -1 means all keys */
	int src_bank, src_instr, src_key;
};

/*
 * ioctls for hwdep
 */

#define SNDRV_EMUX_HWDEP_NAME	"Emux WaveTable"

#define SNDRV_EMUX_VERSION	((1 << 16) | (0 << 8) | 0)	/* 1.0.0 */

struct snd_emux_misc_mode {
	int port;	/* -1 = all */
	int mode;
	int value;
	int value2;	/* reserved */
};

#define SNDRV_EMUX_IOCTL_VERSION	_IOR('H', 0x80, unsigned int)
#define SNDRV_EMUX_IOCTL_LOAD_PATCH	_IOWR('H', 0x81, struct soundfont_patch_info)
#define SNDRV_EMUX_IOCTL_RESET_SAMPLES	_IO('H', 0x82)
#define SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES _IO('H', 0x83)
#define SNDRV_EMUX_IOCTL_MEM_AVAIL	_IOW('H', 0x84, int)
#define SNDRV_EMUX_IOCTL_MISC_MODE	_IOWR('H', 0x84, struct snd_emux_misc_mode)

#endif /* __SOUND_SFNT_INFO_H */

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