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 (at) 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 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 struct soundfont_voice_info 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 }; 46 47 struct snd_sf_sample { 48 struct soundfont_sample_info v; 49 int counter; 50 struct snd_util_memblk *block; /* allocated data block */ 51 struct snd_sf_sample *next; 52 }; 53 54 /* 55 * This represents all the information relating to a soundfont. 56 */ 57 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 struct snd_sf_zone *zones; /* Font information */ 64 struct snd_sf_sample *samples; /* The sample headers */ 65 }; 66 67 /* 68 * Type of the sample access callback 69 */ 70 struct snd_sf_callback { 71 void *private_data; 72 int (*sample_new)(void *private_data, struct snd_sf_sample *sp, 73 struct snd_util_memhdr *hdr, 74 const void __user *buf, long count); 75 int (*sample_free)(void *private_data, struct snd_sf_sample *sp, 76 struct snd_util_memhdr *hdr); 77 void (*sample_reset)(void *private); 78 }; 79 80 /* 81 * List of soundfonts. 82 */ 83 struct snd_sf_list { 84 struct snd_soundfont *currsf; /* The currently open soundfont */ 85 int open_client; /* client pointer for lock */ 86 int mem_used; /* used memory size */ 87 struct snd_sf_zone *presets[SF_MAX_PRESETS]; 88 struct snd_soundfont *fonts; /* The list of soundfonts */ 89 int fonts_size; /* number of fonts allocated */ 90 int zone_counter; /* last allocated time for zone */ 91 int sample_counter; /* last allocated time for sample */ 92 int zone_locked; /* locked time for zone */ 93 int sample_locked; /* locked time for sample */ 94 struct snd_sf_callback callback; /* callback functions */ 95 int presets_locked; 96 struct mutex presets_mutex; 97 spinlock_t lock; 98 struct snd_util_memhdr *memhdr; 99 }; 100 101 /* Prototypes for soundfont.c */ 102 int snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data, 103 long count, int client); 104 int snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data, 105 long count, int client); 106 int snd_soundfont_close_check(struct snd_sf_list *sflist, int client); 107 108 struct snd_sf_list *snd_sf_new(struct snd_sf_callback *callback, 109 struct snd_util_memhdr *hdr); 110 void snd_sf_free(struct snd_sf_list *sflist); 111 112 int snd_soundfont_remove_samples(struct snd_sf_list *sflist); 113 int snd_soundfont_remove_unlocked(struct snd_sf_list *sflist); 114 115 int snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel, 116 int preset, int bank, 117 int def_preset, int def_bank, 118 struct snd_sf_zone **table, int max_layers); 119 120 /* Parameter conversions */ 121 int snd_sf_calc_parm_hold(int msec); 122 int snd_sf_calc_parm_attack(int msec); 123 int snd_sf_calc_parm_decay(int msec); 124 #define snd_sf_calc_parm_delay(msec) (0x8000 - (msec) * 1000 / 725); 125 extern int snd_sf_vol_table[128]; 126 int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio); 127 128 129 #endif /* __SOUND_SOUNDFONT_H */ 130
