385 строки
12 KiB
C
385 строки
12 KiB
C
/*
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* Advanced Linux Sound Architecture
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*
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* InterWave FFFF Instrument Format
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* Copyright (c) 1994-99 by Jaroslav Kysela <perex@suse.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __SOUND_AINSTR_IW_H
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#define __SOUND_AINSTR_IW_H
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#ifndef __KERNEL__
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#include <asm/types.h>
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#include <asm/byteorder.h>
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#endif
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/*
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* share types (share ID 1)
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*/
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#define IWFFFF_SHARE_FILE 0
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/*
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* wave formats
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*/
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#define IWFFFF_WAVE_16BIT 0x0001 /* 16-bit wave */
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#define IWFFFF_WAVE_UNSIGNED 0x0002 /* unsigned wave */
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#define IWFFFF_WAVE_INVERT 0x0002 /* same as unsigned wave */
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#define IWFFFF_WAVE_BACKWARD 0x0004 /* backward mode (maybe used for reverb or ping-ping loop) */
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#define IWFFFF_WAVE_LOOP 0x0008 /* loop mode */
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#define IWFFFF_WAVE_BIDIR 0x0010 /* bidirectional mode */
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#define IWFFFF_WAVE_ULAW 0x0020 /* uLaw compressed wave */
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#define IWFFFF_WAVE_RAM 0x0040 /* wave is _preloaded_ in RAM (it is used for ROM simulation) */
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#define IWFFFF_WAVE_ROM 0x0080 /* wave is in ROM */
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#define IWFFFF_WAVE_STEREO 0x0100 /* wave is stereo */
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/*
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* Wavetable definitions
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*/
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struct iwffff_wave {
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unsigned int share_id[4]; /* share id - zero = no sharing */
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unsigned int format; /* wave format */
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struct {
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unsigned int number; /* some other ID for this wave */
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unsigned int memory; /* begin of waveform in onboard memory */
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unsigned char *ptr; /* pointer to waveform in system memory */
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} address;
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unsigned int size; /* size of waveform in samples */
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unsigned int start; /* start offset in samples * 16 (lowest 4 bits - fraction) */
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unsigned int loop_start; /* bits loop start offset in samples * 16 (lowest 4 bits - fraction) */
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unsigned int loop_end; /* loop start offset in samples * 16 (lowest 4 bits - fraction) */
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unsigned short loop_repeat; /* loop repeat - 0 = forever */
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unsigned int sample_ratio; /* sample ratio (44100 * 1024 / rate) */
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unsigned char attenuation; /* 0 - 127 (no corresponding midi controller) */
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unsigned char low_note; /* lower frequency range for this waveform */
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unsigned char high_note; /* higher frequency range for this waveform */
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unsigned char pad;
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struct iwffff_wave *next;
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};
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/*
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* Layer
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*/
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#define IWFFFF_LFO_SHAPE_TRIANGLE 0
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#define IWFFFF_LFO_SHAPE_POSTRIANGLE 1
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struct iwffff_lfo {
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unsigned short freq; /* (0-2047) 0.01Hz - 21.5Hz */
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signed short depth; /* volume +- (0-255) 0.48675dB/step */
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signed short sweep; /* 0 - 950 deciseconds */
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unsigned char shape; /* see to IWFFFF_LFO_SHAPE_XXXX */
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unsigned char delay; /* 0 - 255 deciseconds */
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};
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#define IWFFFF_ENV_FLAG_RETRIGGER 0x0001 /* flag - retrigger */
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#define IWFFFF_ENV_MODE_ONE_SHOT 0x0001 /* mode - one shot */
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#define IWFFFF_ENV_MODE_SUSTAIN 0x0002 /* mode - sustain */
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#define IWFFFF_ENV_MODE_NO_SUSTAIN 0x0003 /* mode - no sustain */
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#define IWFFFF_ENV_INDEX_VELOCITY 0x0001 /* index - velocity */
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#define IWFFFF_ENV_INDEX_FREQUENCY 0x0002 /* index - frequency */
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struct iwffff_env_point {
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unsigned short offset;
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unsigned short rate;
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};
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struct iwffff_env_record {
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unsigned short nattack;
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unsigned short nrelease;
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unsigned short sustain_offset;
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unsigned short sustain_rate;
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unsigned short release_rate;
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unsigned char hirange;
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unsigned char pad;
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struct iwffff_env_record *next;
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/* points are stored here */
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/* count of points = nattack + nrelease */
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};
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struct iwffff_env {
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unsigned char flags;
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unsigned char mode;
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unsigned char index;
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unsigned char pad;
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struct iwffff_env_record *record;
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};
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#define IWFFFF_LAYER_FLAG_RETRIGGER 0x0001 /* retrigger */
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#define IWFFFF_LAYER_VELOCITY_TIME 0x0000 /* velocity mode = time */
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#define IWFFFF_LAYER_VELOCITY_RATE 0x0001 /* velocity mode = rate */
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#define IWFFFF_LAYER_EVENT_KUP 0x0000 /* layer event - key up */
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#define IWFFFF_LAYER_EVENT_KDOWN 0x0001 /* layer event - key down */
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#define IWFFFF_LAYER_EVENT_RETRIG 0x0002 /* layer event - retrigger */
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#define IWFFFF_LAYER_EVENT_LEGATO 0x0003 /* layer event - legato */
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struct iwffff_layer {
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unsigned char flags;
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unsigned char velocity_mode;
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unsigned char layer_event;
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unsigned char low_range; /* range for layer based */
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unsigned char high_range; /* on either velocity or frequency */
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unsigned char pan; /* pan offset from CC1 (0 left - 127 right) */
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unsigned char pan_freq_scale; /* position based on frequency (0-127) */
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unsigned char attenuation; /* 0-127 (no corresponding midi controller) */
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struct iwffff_lfo tremolo; /* tremolo effect */
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struct iwffff_lfo vibrato; /* vibrato effect */
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unsigned short freq_scale; /* 0-2048, 1024 is equal to semitone scaling */
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unsigned char freq_center; /* center for keyboard frequency scaling */
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unsigned char pad;
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struct iwffff_env penv; /* pitch envelope */
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struct iwffff_env venv; /* volume envelope */
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struct iwffff_wave *wave;
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struct iwffff_layer *next;
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};
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/*
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* Instrument
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*/
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#define IWFFFF_EXCLUDE_NONE 0x0000 /* exclusion mode - none */
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#define IWFFFF_EXCLUDE_SINGLE 0x0001 /* exclude single - single note from the instrument group */
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#define IWFFFF_EXCLUDE_MULTIPLE 0x0002 /* exclude multiple - stop only same note from this instrument */
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#define IWFFFF_LAYER_NONE 0x0000 /* not layered */
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#define IWFFFF_LAYER_ON 0x0001 /* layered */
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#define IWFFFF_LAYER_VELOCITY 0x0002 /* layered by velocity */
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#define IWFFFF_LAYER_FREQUENCY 0x0003 /* layered by frequency */
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#define IWFFFF_EFFECT_NONE 0
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#define IWFFFF_EFFECT_REVERB 1
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#define IWFFFF_EFFECT_CHORUS 2
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#define IWFFFF_EFFECT_ECHO 3
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struct iwffff_instrument {
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unsigned short exclusion;
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unsigned short layer_type;
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unsigned short exclusion_group; /* 0 - none, 1-65535 */
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unsigned char effect1; /* effect 1 */
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unsigned char effect1_depth; /* 0-127 */
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unsigned char effect2; /* effect 2 */
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unsigned char effect2_depth; /* 0-127 */
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struct iwffff_layer *layer; /* first layer */
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};
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/*
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*
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* Kernel <-> user space
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* Hardware (CPU) independent section
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*
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* * = zero or more
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* + = one or more
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*
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* iwffff_xinstrument IWFFFF_STRU_INSTR
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* +iwffff_xlayer IWFFFF_STRU_LAYER
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* *iwffff_xenv_record IWFFFF_STRU_ENV_RECT (tremolo)
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* *iwffff_xenv_record IWFFFF_STRU_EVN_RECT (vibrato)
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* +iwffff_xwave IWFFFF_STRU_WAVE
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*
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*/
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#define IWFFFF_STRU_WAVE __cpu_to_be32(('W'<<24)|('A'<<16)|('V'<<8)|'E')
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#define IWFFFF_STRU_ENV_RECP __cpu_to_be32(('E'<<24)|('N'<<16)|('R'<<8)|'P')
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#define IWFFFF_STRU_ENV_RECV __cpu_to_be32(('E'<<24)|('N'<<16)|('R'<<8)|'V')
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#define IWFFFF_STRU_LAYER __cpu_to_be32(('L'<<24)|('A'<<16)|('Y'<<8)|'R')
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#define IWFFFF_STRU_INSTR __cpu_to_be32(('I'<<24)|('N'<<16)|('S'<<8)|'T')
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/*
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* Wavetable definitions
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*/
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struct iwffff_xwave {
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__u32 stype; /* structure type */
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__u32 share_id[4]; /* share id - zero = no sharing */
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__u32 format; /* wave format */
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__u32 offset; /* offset to ROM (address) */
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__u32 size; /* size of waveform in samples */
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__u32 start; /* start offset in samples * 16 (lowest 4 bits - fraction) */
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__u32 loop_start; /* bits loop start offset in samples * 16 (lowest 4 bits - fraction) */
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__u32 loop_end; /* loop start offset in samples * 16 (lowest 4 bits - fraction) */
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__u16 loop_repeat; /* loop repeat - 0 = forever */
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__u32 sample_ratio; /* sample ratio (44100 * 1024 / rate) */
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__u8 attenuation; /* 0 - 127 (no corresponding midi controller) */
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__u8 low_note; /* lower frequency range for this waveform */
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__u8 high_note; /* higher frequency range for this waveform */
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__u8 pad;
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};
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/*
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* Layer
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*/
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struct iwffff_xlfo {
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__u16 freq; /* (0-2047) 0.01Hz - 21.5Hz */
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__s16 depth; /* volume +- (0-255) 0.48675dB/step */
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__s16 sweep; /* 0 - 950 deciseconds */
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__u8 shape; /* see to ULTRA_IW_LFO_SHAPE_XXXX */
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__u8 delay; /* 0 - 255 deciseconds */
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};
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struct iwffff_xenv_point {
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__u16 offset;
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__u16 rate;
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};
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struct iwffff_xenv_record {
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__u32 stype;
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__u16 nattack;
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__u16 nrelease;
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__u16 sustain_offset;
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__u16 sustain_rate;
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__u16 release_rate;
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__u8 hirange;
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__u8 pad;
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/* points are stored here.. */
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/* count of points = nattack + nrelease */
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};
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struct iwffff_xenv {
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__u8 flags;
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__u8 mode;
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__u8 index;
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__u8 pad;
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};
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struct iwffff_xlayer {
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__u32 stype;
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__u8 flags;
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__u8 velocity_mode;
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__u8 layer_event;
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__u8 low_range; /* range for layer based */
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__u8 high_range; /* on either velocity or frequency */
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__u8 pan; /* pan offset from CC1 (0 left - 127 right) */
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__u8 pan_freq_scale; /* position based on frequency (0-127) */
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__u8 attenuation; /* 0-127 (no corresponding midi controller) */
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struct iwffff_xlfo tremolo; /* tremolo effect */
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struct iwffff_xlfo vibrato; /* vibrato effect */
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__u16 freq_scale; /* 0-2048, 1024 is equal to semitone scaling */
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__u8 freq_center; /* center for keyboard frequency scaling */
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__u8 pad;
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struct iwffff_xenv penv; /* pitch envelope */
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struct iwffff_xenv venv; /* volume envelope */
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};
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/*
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* Instrument
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*/
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struct iwffff_xinstrument {
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__u32 stype;
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__u16 exclusion;
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__u16 layer_type;
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__u16 exclusion_group; /* 0 - none, 1-65535 */
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__u8 effect1; /* effect 1 */
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__u8 effect1_depth; /* 0-127 */
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__u8 effect2; /* effect 2 */
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__u8 effect2_depth; /* 0-127 */
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};
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/*
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* ROM support
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* InterWave ROMs are Little-Endian (x86)
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*/
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#define IWFFFF_ROM_HDR_SIZE 512
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struct iwffff_rom_header {
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__u8 iwave[8];
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__u8 revision;
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__u8 series_number;
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__u8 series_name[16];
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__u8 date[10];
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__u16 vendor_revision_major;
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__u16 vendor_revision_minor;
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__u32 rom_size;
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__u8 copyright[128];
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__u8 vendor_name[64];
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__u8 description[128];
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};
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/*
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* Instrument info
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*/
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#define IWFFFF_INFO_LFO_VIBRATO (1<<0)
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#define IWFFFF_INFO_LFO_VIBRATO_SHAPE (1<<1)
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#define IWFFFF_INFO_LFO_TREMOLO (1<<2)
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#define IWFFFF_INFO_LFO_TREMOLO_SHAPE (1<<3)
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struct iwffff_info {
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unsigned int format; /* supported format bits */
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unsigned int effects; /* supported effects (1 << IWFFFF_EFFECT*) */
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unsigned int lfos; /* LFO effects */
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unsigned int max8_len; /* maximum 8-bit wave length */
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unsigned int max16_len; /* maximum 16-bit wave length */
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};
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#ifdef __KERNEL__
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#include "seq_instr.h"
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struct snd_iwffff_ops {
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void *private_data;
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int (*info)(void *private_data, struct iwffff_info *info);
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int (*put_sample)(void *private_data, struct iwffff_wave *wave,
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char __user *data, long len, int atomic);
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int (*get_sample)(void *private_data, struct iwffff_wave *wave,
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char __user *data, long len, int atomic);
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int (*remove_sample)(void *private_data, struct iwffff_wave *wave,
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int atomic);
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void (*notify)(void *private_data, struct snd_seq_kinstr *instr, int what);
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struct snd_seq_kinstr_ops kops;
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};
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int snd_seq_iwffff_init(struct snd_iwffff_ops *ops,
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void *private_data,
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struct snd_seq_kinstr_ops *next);
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#endif
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/* typedefs for compatibility to user-space */
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typedef struct iwffff_xwave iwffff_xwave_t;
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typedef struct iwffff_xlfo iwffff_xlfo_t;
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typedef struct iwffff_xenv_point iwffff_xenv_point_t;
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typedef struct iwffff_xenv_record iwffff_xenv_record_t;
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typedef struct iwffff_xenv iwffff_xenv_t;
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typedef struct iwffff_xlayer iwffff_xlayer_t;
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typedef struct iwffff_xinstrument iwffff_xinstrument_t;
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typedef struct iwffff_rom_header iwffff_rom_header_t;
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typedef struct iwffff_info iwffff_info_t;
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#endif /* __SOUND_AINSTR_IW_H */
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