Edit File: soundfont.h
#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 <sound/sfnt_info.h> #include <sound/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 */