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 <sound/sfnt_info.h>
26#include <sound/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
32struct 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
47struct 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 */
57struct 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 */
70struct 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 */
83struct 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 */
102int snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data,
103		       long count, int client);
104int snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data,
105				long count, int client);
106int snd_soundfont_close_check(struct snd_sf_list *sflist, int client);
107
108struct snd_sf_list *snd_sf_new(struct snd_sf_callback *callback,
109			       struct snd_util_memhdr *hdr);
110void snd_sf_free(struct snd_sf_list *sflist);
111
112int snd_soundfont_remove_samples(struct snd_sf_list *sflist);
113int snd_soundfont_remove_unlocked(struct snd_sf_list *sflist);
114
115int 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 */
121int snd_sf_calc_parm_hold(int msec);
122int snd_sf_calc_parm_attack(int msec);
123int snd_sf_calc_parm_decay(int msec);
124#define snd_sf_calc_parm_delay(msec) (0x8000 - (msec) * 1000 / 725)
125extern int snd_sf_vol_table[128];
126int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio);
127
128
129#endif /* __SOUND_SOUNDFONT_H */
130