include/sound/soundfont.h

   1 #ifndef __SOUND_SOUNDFONT_H
   2 #define __SOUND_SOUNDFONT_H
   3
   4 /*
   5  *  Soundfont defines and definitions.
   6  *
   7  *  Copyright (C) 1999 Steve Ratcliffe
   8  *  Copyright (c) 1999-2000 Takashi iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  */
  24
  25 #include "sfnt_info.h"
  26 #include "util_mem.h"
  27
  28 #define SF_MAX_INSTRUMENTS      128     /* maximum instrument number */
  29 #define SF_MAX_PRESETS  256     /* drums are mapped from 128 to 256 */
  30 #define SF_IS_DRUM_BANK(z) ((z) == 128)
  31
  32 typedef struct snd_sf_zone {
  33         struct snd_sf_zone *next;       /* Link to next */
  34         unsigned char bank;             /* Midi bank for this zone */
  35         unsigned char instr;            /* Midi program for this zone */
  36         unsigned char mapped;           /* True if mapped to something else */
  37
  38         soundfont_voice_info_t v;       /* All the soundfont parameters */
  39         int counter;
  40         struct snd_sf_sample *sample;   /* Link to sample */
  41
  42         /* The following deals with preset numbers (programs) */
  43         struct snd_sf_zone *next_instr; /* Next zone of this instrument */
  44         struct snd_sf_zone *next_zone;  /* Next zone in play list */
  45 } snd_sf_zone_t;
  46
  47 typedef struct snd_sf_sample {
  48         soundfont_sample_info_t v;
  49         int counter;
  50         snd_util_memblk_t *block;       /* allocated data block */
  51         struct snd_sf_sample *next;
  52 } snd_sf_sample_t;
  53
  54 /*
  55  * This represents all the information relating to a soundfont.
  56  */
  57 typedef struct snd_soundfont {
  58         struct snd_soundfont *next;     /* Link to next */
  59         /*struct snd_soundfont *prev;*/ /* Link to previous */
  60         short  id;              /* file id */
  61         short  type;            /* font type */
  62         unsigned char name[SNDRV_SFNT_PATCH_NAME_LEN];  /* identifier */
  63         snd_sf_zone_t *zones; /* Font information */
  64         snd_sf_sample_t *samples; /* The sample headers */
  65 } snd_soundfont_t;
  66
  67 /*
  68  * Type of the sample access callback
  69  */
  70 typedef int (*snd_sf_sample_new_t)(void *private_data, snd_sf_sample_t *sp,
  71                                    snd_util_memhdr_t *hdr, const void __user *buf, long count);
  72 typedef int (*snd_sf_sample_free_t)(void *private_data, snd_sf_sample_t *sp,
  73                                     snd_util_memhdr_t *hdr);
  74 typedef void (*snd_sf_sample_reset_t)(void *private);
  75
  76 typedef struct snd_sf_callback {
  77         void *private_data;
  78         snd_sf_sample_new_t sample_new;
  79         snd_sf_sample_free_t sample_free;
  80         snd_sf_sample_reset_t sample_reset;
  81 } snd_sf_callback_t;
  82
  83 /*
  84  * List of soundfonts.
  85  */
  86 typedef struct snd_sf_list {
  87         snd_soundfont_t *currsf; /* The currently open soundfont */
  88         int open_client;        /* client pointer for lock */
  89         int mem_used;           /* used memory size */
  90         snd_sf_zone_t *presets[SF_MAX_PRESETS];
  91         snd_soundfont_t *fonts; /* The list of soundfonts */
  92         int fonts_size; /* number of fonts allocated */
  93         int zone_counter;       /* last allocated time for zone */
  94         int sample_counter;     /* last allocated time for sample */
  95         int zone_locked;        /* locked time for zone */
  96         int sample_locked;      /* locked time for sample */
  97         snd_sf_callback_t callback;     /* callback functions */
  98         int presets_locked;
  99         struct semaphore presets_mutex;
 100         spinlock_t lock;
 101         snd_util_memhdr_t *memhdr;
 102 } snd_sf_list_t;
 103
 104 /* Prototypes for soundfont.c */
 105 int snd_soundfont_load(snd_sf_list_t *sflist, const void __user *data, long count, int client);
 106 int snd_soundfont_load_guspatch(snd_sf_list_t *sflist, const char __user *data,
 107                                 long count, int client);
 108 int snd_soundfont_close_check(snd_sf_list_t *sflist, int client);
 109
 110 snd_sf_list_t *snd_sf_new(snd_sf_callback_t *callback, snd_util_memhdr_t *hdr);
 111 void snd_sf_free(snd_sf_list_t *sflist);
 112
 113 int snd_soundfont_remove_samples(snd_sf_list_t *sflist);
 114 int snd_soundfont_remove_unlocked(snd_sf_list_t *sflist);
 115
 116 int snd_soundfont_search_zone(snd_sf_list_t *sflist, int *notep, int vel,
 117                               int preset, int bank,
 118                               int def_preset, int def_bank,
 119                               snd_sf_zone_t **table, int max_layers);
 120
 121 /* Parameter conversions */
 122 int snd_sf_calc_parm_hold(int msec);
 123 int snd_sf_calc_parm_attack(int msec);
 124 int snd_sf_calc_parm_decay(int msec);
 125 #define snd_sf_calc_parm_delay(msec) (0x8000 - (msec) * 1000 / 725);
 126 extern int snd_sf_vol_table[128];
 127 int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio);
 128
 129
 130 #endif /* __SOUND_SOUNDFONT_H */