Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: c992958f5e3c818afa775b9ea58fb0da1f6cf845 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
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 */