linux/include/sound/soundfont.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef __SOUND_SOUNDFONT_H
#define __SOUND_SOUNDFONT_H

/*
 *  Soundfont defines and definitions.
 *
 *  Copyright (C) 1999 Steve Ratcliffe
 *  Copyright (c) 1999-2000 Takashi iwai <[email protected]>
 */

#include <sound/sfnt_info.h>
#include <sound/util_mem.h>

#define SF_MAX_INSTRUMENTS …
#define SF_MAX_PRESETS …
#define SF_IS_DRUM_BANK(z) …

struct snd_sf_zone { … };

struct snd_sf_sample { … };

/*
 * This represents all the information relating to a soundfont.
 */
struct snd_soundfont { … };

/*
 * Type of the sample access callback
 */
struct snd_sf_callback { … };

/*
 * List of soundfonts.
 */
struct snd_sf_list { … };

/* Prototypes for soundfont.c */
int snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data,
		       long count, int client);
int snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data,
				long count);
int snd_soundfont_close_check(struct snd_sf_list *sflist, int client);

struct snd_sf_list *snd_sf_new(struct snd_sf_callback *callback,
			       struct snd_util_memhdr *hdr);
void snd_sf_free(struct snd_sf_list *sflist);

int snd_soundfont_remove_samples(struct snd_sf_list *sflist);
int snd_soundfont_remove_unlocked(struct snd_sf_list *sflist);

int snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel,
			      int preset, int bank,
			      int def_preset, int def_bank,
			      struct snd_sf_zone **table, int max_layers);

/* Parameter conversions */
int snd_sf_calc_parm_hold(int msec);
int snd_sf_calc_parm_attack(int msec);
int snd_sf_calc_parm_decay(int msec);
#define snd_sf_calc_parm_delay(msec) …
extern int snd_sf_vol_table[128];
int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio);


#endif /* __SOUND_SOUNDFONT_H */