| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */
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| 2 | #ifndef __SOUND_SOUNDFONT_H
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| 3 | #define __SOUND_SOUNDFONT_H
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| 4 |
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| 5 | /*
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| 6 | * Soundfont defines and definitions.
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| 7 | *
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| 8 | * Copyright (C) 1999 Steve Ratcliffe
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| 9 | * Copyright (c) 1999-2000 Takashi iwai <tiwai@suse.de>
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| 10 | */
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| 11 |
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| 12 | #include <sound/sfnt_info.h>
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| 13 | #include <sound/util_mem.h>
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| 14 |
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| 15 | #define SF_MAX_INSTRUMENTS 128 /* maximum instrument number */
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| 16 | #define SF_MAX_PRESETS 256 /* drums are mapped from 128 to 256 */
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| 17 | #define SF_IS_DRUM_BANK(z) ((z) == 128)
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| 18 |
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| 19 | struct snd_sf_zone {
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| 20 | struct snd_sf_zone *next; /* Link to next */
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| 21 | unsigned char bank; /* Midi bank for this zone */
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| 22 | unsigned char instr; /* Midi program for this zone */
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| 23 | unsigned char mapped; /* True if mapped to something else */
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| 24 |
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| 25 | struct soundfont_voice_info v; /* All the soundfont parameters */
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| 26 | int counter;
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| 27 | struct snd_sf_sample *sample; /* Link to sample */
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| 28 |
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| 29 | /* The following deals with preset numbers (programs) */
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| 30 | struct snd_sf_zone *next_instr; /* Next zone of this instrument */
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| 31 | struct snd_sf_zone *next_zone; /* Next zone in play list */
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| 32 | };
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| 33 |
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| 34 | struct snd_sf_sample {
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| 35 | struct soundfont_sample_info v;
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| 36 | int counter;
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| 37 | struct snd_util_memblk *block; /* allocated data block */
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| 38 | struct snd_sf_sample *next;
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| 39 | };
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| 40 |
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| 41 | /*
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| 42 | * This represents all the information relating to a soundfont.
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| 43 | */
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| 44 | struct snd_soundfont {
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| 45 | struct snd_soundfont *next; /* Link to next */
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| 46 | /*struct snd_soundfont *prev;*/ /* Link to previous */
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| 47 | short id; /* file id */
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| 48 | short type; /* font type */
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| 49 | unsigned char name[SNDRV_SFNT_PATCH_NAME_LEN]; /* identifier */
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| 50 | struct snd_sf_zone *zones; /* Font information */
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| 51 | struct snd_sf_sample *samples; /* The sample headers */
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| 52 | };
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| 53 |
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| 54 | /*
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| 55 | * Type of the sample access callback
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| 56 | */
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| 57 | struct snd_sf_callback {
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| 58 | void *private_data;
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| 59 | int (*sample_new)(void *private_data, struct snd_sf_sample *sp,
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| 60 | struct snd_util_memhdr *hdr,
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| 61 | const void __user *buf, long count);
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| 62 | int (*sample_free)(void *private_data, struct snd_sf_sample *sp,
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| 63 | struct snd_util_memhdr *hdr);
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| 64 | void (*sample_reset)(void *private);
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| 65 | };
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| 66 |
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| 67 | /*
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| 68 | * List of soundfonts.
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| 69 | */
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| 70 | struct snd_sf_list {
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| 71 | struct snd_soundfont *currsf; /* The currently open soundfont */
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| 72 | int open_client; /* client pointer for lock */
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| 73 | int mem_used; /* used memory size */
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| 74 | struct snd_sf_zone *presets[SF_MAX_PRESETS];
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| 75 | struct snd_soundfont *fonts; /* The list of soundfonts */
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| 76 | int fonts_size; /* number of fonts allocated */
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| 77 | int zone_counter; /* last allocated time for zone */
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| 78 | int sample_counter; /* last allocated time for sample */
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| 79 | int zone_locked; /* locked time for zone */
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| 80 | int sample_locked; /* locked time for sample */
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| 81 | struct snd_sf_callback callback; /* callback functions */
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| 82 | int presets_locked;
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| 83 | struct mutex presets_mutex;
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| 84 | spinlock_t lock;
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| 85 | struct snd_util_memhdr *memhdr;
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| 86 | };
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| 87 |
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| 88 | /* Prototypes for soundfont.c */
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| 89 | int snd_soundfont_load(struct snd_card *card,
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| 90 | struct snd_sf_list *sflist, const void __user *data,
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| 91 | long count, int client);
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| 92 | int snd_soundfont_load_guspatch(struct snd_card *card,
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| 93 | struct snd_sf_list *sflist, const char __user *data,
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| 94 | long count);
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| 95 | int snd_soundfont_close_check(struct snd_sf_list *sflist, int client);
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| 96 |
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| 97 | struct snd_sf_list *snd_sf_new(struct snd_sf_callback *callback,
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| 98 | struct snd_util_memhdr *hdr);
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| 99 | void snd_sf_free(struct snd_sf_list *sflist);
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| 100 |
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| 101 | int snd_soundfont_remove_samples(struct snd_sf_list *sflist);
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| 102 | int snd_soundfont_remove_unlocked(struct snd_sf_list *sflist);
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| 103 |
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| 104 | int snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel,
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| 105 | int preset, int bank,
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| 106 | int def_preset, int def_bank,
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| 107 | struct snd_sf_zone **table, int max_layers);
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| 108 |
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| 109 | /* Parameter conversions */
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| 110 | int snd_sf_calc_parm_hold(int msec);
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| 111 | int snd_sf_calc_parm_attack(int msec);
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| 112 | int snd_sf_calc_parm_decay(int msec);
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| 113 | #define snd_sf_calc_parm_delay(msec) (0x8000 - (msec) * 1000 / 725)
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| 114 | extern int snd_sf_vol_table[128];
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| 115 | int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio);
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| 116 |
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| 117 |
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| 118 | #endif /* __SOUND_SOUNDFONT_H */
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