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Diffstat (limited to '')
| -rw-r--r-- | include/sound/soundfont.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/include/sound/soundfont.h b/include/sound/soundfont.h new file mode 100644 index 0000000000..e445688a4f --- /dev/null +++ b/include/sound/soundfont.h @@ -0,0 +1,116 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#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> + */ + +#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 */ |