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Diffstat (limited to 'include/sound/soundfont.h')
| -rw-r--r-- | include/sound/soundfont.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/include/sound/soundfont.h b/include/sound/soundfont.h new file mode 100644 index 0000000..c992958 --- /dev/null +++ b/include/sound/soundfont.h @@ -0,0 +1,130 @@ +#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) + +typedef 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 */ + + soundfont_voice_info_t 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 */ +} snd_sf_zone_t; + +typedef struct snd_sf_sample { + soundfont_sample_info_t v; + int counter; + snd_util_memblk_t *block; /* allocated data block */ + struct snd_sf_sample *next; +} snd_sf_sample_t; + +/* + * This represents all the information relating to a soundfont. + */ +typedef 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 */ + snd_sf_zone_t *zones; /* Font information */ + snd_sf_sample_t *samples; /* The sample headers */ +} snd_soundfont_t; + +/* + * Type of the sample access callback + */ +typedef int (*snd_sf_sample_new_t)(void *private_data, snd_sf_sample_t *sp, + snd_util_memhdr_t *hdr, const void __user *buf, long count); +typedef int (*snd_sf_sample_free_t)(void *private_data, snd_sf_sample_t *sp, + snd_util_memhdr_t *hdr); +typedef void (*snd_sf_sample_reset_t)(void *private); + +typedef struct snd_sf_callback { + void *private_data; + snd_sf_sample_new_t sample_new; + snd_sf_sample_free_t sample_free; + snd_sf_sample_reset_t sample_reset; +} snd_sf_callback_t; + +/* + * List of soundfonts. + */ +typedef struct snd_sf_list { + snd_soundfont_t *currsf; /* The currently open soundfont */ + int open_client; /* client pointer for lock */ + int mem_used; /* used memory size */ + snd_sf_zone_t *presets[SF_MAX_PRESETS]; + snd_soundfont_t *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 */ + snd_sf_callback_t callback; /* callback functions */ + int presets_locked; + struct semaphore presets_mutex; + spinlock_t lock; + snd_util_memhdr_t *memhdr; +} snd_sf_list_t; + +/* Prototypes for soundfont.c */ +int snd_soundfont_load(snd_sf_list_t *sflist, const void __user *data, long count, int client); +int snd_soundfont_load_guspatch(snd_sf_list_t *sflist, const char __user *data, + long count, int client); +int snd_soundfont_close_check(snd_sf_list_t *sflist, int client); + +snd_sf_list_t *snd_sf_new(snd_sf_callback_t *callback, snd_util_memhdr_t *hdr); +void snd_sf_free(snd_sf_list_t *sflist); + +int snd_soundfont_remove_samples(snd_sf_list_t *sflist); +int snd_soundfont_remove_unlocked(snd_sf_list_t *sflist); + +int snd_soundfont_search_zone(snd_sf_list_t *sflist, int *notep, int vel, + int preset, int bank, + int def_preset, int def_bank, + snd_sf_zone_t **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 */ |
