cregit-Linux how code gets into the kernel

Release 4.12 include/sound/soundfont.h

Directory: include/sound


 *  Soundfont defines and definitions.
 *  Copyright (C) 1999 Steve Ratcliffe
 *  Copyright (c) 1999-2000 Takashi iwai <>
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   GNU General Public License for more details.
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

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

/* maximum instrument number */

#define SF_MAX_PRESETS  256	
/* drums are mapped from 128 to 256 */

#define SF_IS_DRUM_BANK(z) ((z) == 128)

struct snd_sf_zone {
struct snd_sf_zone *next;	/* Link to next */
unsigned char bank;		/* Midi bank for this zone */
unsigned char instr;		/* Midi program for this zone */
unsigned char mapped;		/* True if mapped to something else */

struct soundfont_voice_info v;	/* All the soundfont parameters */
int counter;
struct snd_sf_sample *sample;	/* Link to sample */

	/* The following deals with preset numbers (programs) */
struct snd_sf_zone *next_instr;	/* Next zone of this instrument */
struct snd_sf_zone *next_zone;	/* Next zone in play list */

struct snd_sf_sample {
struct soundfont_sample_info v;
int counter;
struct snd_util_memblk *block;	/* allocated data block */
struct snd_sf_sample *next;

 * This represents all the information relating to a soundfont.

struct snd_soundfont {
struct snd_soundfont *next;	/* Link to next */
	/*struct snd_soundfont *prev;*/	/* Link to previous */
short  id;		/* file id */
short  type;		/* font type */
unsigned char name[SNDRV_SFNT_PATCH_NAME_LEN];	/* identifier */
struct snd_sf_zone *zones; /* Font information */
struct snd_sf_sample *samples; /* The sample headers */

 * Type of the sample access callback

struct snd_sf_callback {
void *private_data;
int (*sample_new)(void *private_data, struct snd_sf_sample *sp,
			  struct snd_util_memhdr *hdr,
			  const void __user *buf, long count);
int (*sample_free)(void *private_data, struct snd_sf_sample *sp,
			   struct snd_util_memhdr *hdr);
void (*sample_reset)(void *private);

 * List of soundfonts.

struct snd_sf_list {
struct snd_soundfont *currsf; /* The currently open soundfont */
int open_client;	/* client pointer for lock */
int mem_used;		/* used memory size */
struct snd_sf_zone *presets[SF_MAX_PRESETS];
struct snd_soundfont *fonts; /* The list of soundfonts */
int fonts_size;	/* number of fonts allocated */
int zone_counter;	/* last allocated time for zone */
int sample_counter;	/* last allocated time for sample */
int zone_locked;	/* locked time for zone */
int sample_locked;	/* locked time for sample */
struct snd_sf_callback callback;	/* callback functions */
int presets_locked;
struct mutex presets_mutex;
spinlock_t lock;
struct snd_util_memhdr *memhdr;

/* 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 client);
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) (0x8000 - (msec) * 1000 / 725)
extern int snd_sf_vol_table[128];
int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio);

#endif /* __SOUND_SOUNDFONT_H */

Overall Contributors

Jaroslav Kysela41385.68%450.00%
Takashi Iwai6513.49%112.50%
David Howells20.41%112.50%
Phil Carmody10.21%112.50%
Ingo Molnar10.21%112.50%
Directory: include/sound
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.