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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@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 |
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