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Diffstat (limited to 'include/sound/ainstr_simple.h')
| -rw-r--r-- | include/sound/ainstr_simple.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/include/sound/ainstr_simple.h b/include/sound/ainstr_simple.h new file mode 100644 index 00000000000..40824b4ab23 --- /dev/null +++ b/include/sound/ainstr_simple.h @@ -0,0 +1,156 @@ +/* + * Advanced Linux Sound Architecture + * + * Simple (MOD player) Instrument Format + * Copyright (c) 1994-99 by Jaroslav Kysela <perex@suse.cz> + * + * + * 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 + * + */ + +#ifndef __SOUND_AINSTR_SIMPLE_H +#define __SOUND_AINSTR_SIMPLE_H + +#ifndef __KERNEL__ +#include <asm/types.h> +#include <asm/byteorder.h> +#endif + +/* + * share types (share ID 1) + */ + +#define SIMPLE_SHARE_FILE 0 + +/* + * wave formats + */ + +#define SIMPLE_WAVE_16BIT 0x0001 /* 16-bit wave */ +#define SIMPLE_WAVE_UNSIGNED 0x0002 /* unsigned wave */ +#define SIMPLE_WAVE_INVERT 0x0002 /* same as unsigned wave */ +#define SIMPLE_WAVE_BACKWARD 0x0004 /* backward mode (maybe used for reverb or ping-ping loop) */ +#define SIMPLE_WAVE_LOOP 0x0008 /* loop mode */ +#define SIMPLE_WAVE_BIDIR 0x0010 /* bidirectional mode */ +#define SIMPLE_WAVE_STEREO 0x0100 /* stereo wave */ +#define SIMPLE_WAVE_ULAW 0x0200 /* uLaw compression mode */ + +/* + * instrument effects + */ + +#define SIMPLE_EFFECT_NONE 0 +#define SIMPLE_EFFECT_REVERB 1 +#define SIMPLE_EFFECT_CHORUS 2 +#define SIMPLE_EFFECT_ECHO 3 + +/* + * instrument info + */ + +typedef struct simple_instrument_info { + unsigned int format; /* supported format bits */ + unsigned int effects; /* supported effects (1 << SIMPLE_EFFECT_*) */ + unsigned int max8_len; /* maximum 8-bit wave length */ + unsigned int max16_len; /* maximum 16-bit wave length */ +} simple_instrument_info_t; + +/* + * Instrument + */ + +typedef struct { + unsigned int share_id[4]; /* share id - zero = no sharing */ + unsigned int format; /* wave format */ + + struct { + unsigned int number; /* some other ID for this instrument */ + unsigned int memory; /* begin of waveform in onboard memory */ + unsigned char *ptr; /* pointer to waveform in system memory */ + } address; + + unsigned int size; /* size of waveform in samples */ + unsigned int start; /* start offset in samples * 16 (lowest 4 bits - fraction) */ + unsigned int loop_start; /* loop start offset in samples * 16 (lowest 4 bits - fraction) */ + unsigned int loop_end; /* loop end offset in samples * 16 (lowest 4 bits - fraction) */ + unsigned short loop_repeat; /* loop repeat - 0 = forever */ + + unsigned char effect1; /* effect 1 */ + unsigned char effect1_depth; /* 0-127 */ + unsigned char effect2; /* effect 2 */ + unsigned char effect2_depth; /* 0-127 */ +} simple_instrument_t; + +/* + * + * Kernel <-> user space + * Hardware (CPU) independent section + * + * * = zero or more + * + = one or more + * + * simple_xinstrument SIMPLE_STRU_INSTR + * + */ + +#define SIMPLE_STRU_INSTR __cpu_to_be32(('I'<<24)|('N'<<16)|('S'<<8)|'T') + +/* + * Instrument + */ + +typedef struct simple_xinstrument { + __u32 stype; + + __u32 share_id[4]; /* share id - zero = no sharing */ + __u32 format; /* wave format */ + + __u32 size; /* size of waveform in samples */ + __u32 start; /* start offset in samples * 16 (lowest 4 bits - fraction) */ + __u32 loop_start; /* bits loop start offset in samples * 16 (lowest 4 bits - fraction) */ + __u32 loop_end; /* loop start offset in samples * 16 (lowest 4 bits - fraction) */ + __u16 loop_repeat; /* loop repeat - 0 = forever */ + + __u8 effect1; /* effect 1 */ + __u8 effect1_depth; /* 0-127 */ + __u8 effect2; /* effect 2 */ + __u8 effect2_depth; /* 0-127 */ +} simple_xinstrument_t; + +#ifdef __KERNEL__ + +#include "seq_instr.h" + +typedef struct { + void *private_data; + int (*info)(void *private_data, simple_instrument_info_t *info); + int (*put_sample)(void *private_data, simple_instrument_t *instr, + char __user *data, long len, int atomic); + int (*get_sample)(void *private_data, simple_instrument_t *instr, + char __user *data, long len, int atomic); + int (*remove_sample)(void *private_data, simple_instrument_t *instr, + int atomic); + void (*notify)(void *private_data, snd_seq_kinstr_t *instr, int what); + snd_seq_kinstr_ops_t kops; +} snd_simple_ops_t; + +int snd_seq_simple_init(snd_simple_ops_t *ops, + void *private_data, + snd_seq_kinstr_ops_t *next); + +#endif + +#endif /* __SOUND_AINSTR_SIMPLE_H */ |