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/
usr/
src/
linux-headers-3.0.0-14/
include/
sound/
- drwxr-xr-x
|
Viewing file:  soundfont.h (4.47 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
#ifndef __SOUND_SOUNDFONT_H
#define __SOUND_SOUNDFONT_H
/*
* Soundfont defines and definitions.
*
* Copyright (C) 1999 Steve Ratcliffe
* Copyright (c) 1999-2000 Takashi iwai <tiwai@suse.de>
*
* 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* 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 "sfnt_info.h"
#include "util_mem.h"
#define SF_MAX_INSTRUMENTS 128 /* 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 */
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