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Diffstat (limited to '')
| -rw-r--r-- | include/sound/emux_synth.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/include/sound/emux_synth.h b/include/sound/emux_synth.h new file mode 100644 index 000000000..d499b6812 --- /dev/null +++ b/include/sound/emux_synth.h @@ -0,0 +1,229 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef __SOUND_EMUX_SYNTH_H +#define __SOUND_EMUX_SYNTH_H + +/* + * Defines for the Emu-series WaveTable chip + * + * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> + */ + +#include <sound/seq_kernel.h> +#include <sound/seq_device.h> +#include <sound/soundfont.h> +#include <sound/seq_midi_emul.h> +#include <sound/seq_oss.h> +#include <sound/emux_legacy.h> +#include <sound/seq_virmidi.h> + +/* + * compile flags + */ +#define SNDRV_EMUX_USE_RAW_EFFECT + +struct snd_emux; +struct snd_emux_port; +struct snd_emux_voice; +struct snd_emux_effect_table; + +/* + * operators + */ +struct snd_emux_operators { + struct module *owner; + struct snd_emux_voice *(*get_voice)(struct snd_emux *emu, + struct snd_emux_port *port); + int (*prepare)(struct snd_emux_voice *vp); + void (*trigger)(struct snd_emux_voice *vp); + void (*release)(struct snd_emux_voice *vp); + void (*update)(struct snd_emux_voice *vp, int update); + void (*terminate)(struct snd_emux_voice *vp); + void (*free_voice)(struct snd_emux_voice *vp); + void (*reset)(struct snd_emux *emu, int ch); + /* the first parameters are struct snd_emux */ + int (*sample_new)(struct snd_emux *emu, struct snd_sf_sample *sp, + struct snd_util_memhdr *hdr, + const void __user *data, long count); + int (*sample_free)(struct snd_emux *emu, struct snd_sf_sample *sp, + struct snd_util_memhdr *hdr); + void (*sample_reset)(struct snd_emux *emu); + int (*load_fx)(struct snd_emux *emu, int type, int arg, + const void __user *data, long count); + void (*sysex)(struct snd_emux *emu, char *buf, int len, int parsed, + struct snd_midi_channel_set *chset); +#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) + int (*oss_ioctl)(struct snd_emux *emu, int cmd, int p1, int p2); +#endif +}; + + +/* + * constant values + */ +#define SNDRV_EMUX_MAX_PORTS 32 /* max # of sequencer ports */ +#define SNDRV_EMUX_MAX_VOICES 64 /* max # of voices */ +#define SNDRV_EMUX_MAX_MULTI_VOICES 16 /* max # of playable voices + * simultineously + */ + +/* + * flags + */ +#define SNDRV_EMUX_ACCEPT_ROM (1<<0) + +/* + * emuX wavetable + */ +struct snd_emux { + + struct snd_card *card; /* assigned card */ + + /* following should be initialized before registration */ + int max_voices; /* Number of voices */ + int mem_size; /* memory size (in byte) */ + int num_ports; /* number of ports to be created */ + int pitch_shift; /* pitch shift value (for Emu10k1) */ + struct snd_emux_operators ops; /* operators */ + void *hw; /* hardware */ + unsigned long flags; /* other conditions */ + int midi_ports; /* number of virtual midi devices */ + int midi_devidx; /* device offset of virtual midi */ + unsigned int linear_panning: 1; /* panning is linear (sbawe = 1, emu10k1 = 0) */ + int hwdep_idx; /* hwdep device index */ + struct snd_hwdep *hwdep; /* hwdep device */ + + /* private */ + int num_voices; /* current number of voices */ + struct snd_sf_list *sflist; /* root of SoundFont list */ + struct snd_emux_voice *voices; /* Voices (EMU 'channel') */ + int use_time; /* allocation counter */ + spinlock_t voice_lock; /* Lock for voice access */ + struct mutex register_mutex; + int client; /* For the sequencer client */ + int ports[SNDRV_EMUX_MAX_PORTS]; /* The ports for this device */ + struct snd_emux_port *portptrs[SNDRV_EMUX_MAX_PORTS]; + int used; /* use counter */ + char *name; /* name of the device (internal) */ + struct snd_rawmidi **vmidi; + struct timer_list tlist; /* for pending note-offs */ + int timer_active; + + struct snd_util_memhdr *memhdr; /* memory chunk information */ + +#ifdef CONFIG_SND_PROC_FS + struct snd_info_entry *proc; +#endif + +#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) + struct snd_seq_device *oss_synth; +#endif +}; + + +/* + * sequencer port information + */ +struct snd_emux_port { + + struct snd_midi_channel_set chset; + struct snd_emux *emu; + + char port_mode; /* operation mode */ + int volume_atten; /* emuX raw attenuation */ + unsigned long drum_flags; /* drum bitmaps */ + int ctrls[EMUX_MD_END]; /* control parameters */ +#ifdef SNDRV_EMUX_USE_RAW_EFFECT + struct snd_emux_effect_table *effect; +#endif +#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) + struct snd_seq_oss_arg *oss_arg; +#endif +}; + +/* port_mode */ +#define SNDRV_EMUX_PORT_MODE_MIDI 0 /* normal MIDI port */ +#define SNDRV_EMUX_PORT_MODE_OSS_SYNTH 1 /* OSS synth port */ +#define SNDRV_EMUX_PORT_MODE_OSS_MIDI 2 /* OSS multi channel synth port */ + +/* + * A structure to keep track of each hardware voice + */ +struct snd_emux_voice { + int ch; /* Hardware channel number */ + + int state; /* status */ +#define SNDRV_EMUX_ST_OFF 0x00 /* Not playing, and inactive */ +#define SNDRV_EMUX_ST_ON 0x01 /* Note on */ +#define SNDRV_EMUX_ST_RELEASED (0x02|SNDRV_EMUX_ST_ON) /* Note released */ +#define SNDRV_EMUX_ST_SUSTAINED (0x04|SNDRV_EMUX_ST_ON) /* Note sustained */ +#define SNDRV_EMUX_ST_STANDBY (0x08|SNDRV_EMUX_ST_ON) /* Waiting to be triggered */ +#define SNDRV_EMUX_ST_PENDING (0x10|SNDRV_EMUX_ST_ON) /* Note will be released */ +#define SNDRV_EMUX_ST_LOCKED 0x100 /* Not accessible */ + + unsigned int time; /* An allocation time */ + unsigned char note; /* Note currently assigned to this voice */ + unsigned char key; + unsigned char velocity; /* Velocity of current note */ + + struct snd_sf_zone *zone; /* Zone assigned to this note */ + void *block; /* sample block pointer (optional) */ + struct snd_midi_channel *chan; /* Midi channel for this note */ + struct snd_emux_port *port; /* associated port */ + struct snd_emux *emu; /* assigned root info */ + void *hw; /* hardware pointer (emu8000 or emu10k1) */ + unsigned long ontime; /* jiffies at note triggered */ + + /* Emu8k/Emu10k1 registers */ + struct soundfont_voice_info reg; + + /* additional registers */ + int avol; /* volume attenuation */ + int acutoff; /* cutoff target */ + int apitch; /* pitch offset */ + int apan; /* pan/aux pair */ + int aaux; + int ptarget; /* pitch target */ + int vtarget; /* volume target */ + int ftarget; /* filter target */ + +}; + +/* + * update flags (can be combined) + */ +#define SNDRV_EMUX_UPDATE_VOLUME (1<<0) +#define SNDRV_EMUX_UPDATE_PITCH (1<<1) +#define SNDRV_EMUX_UPDATE_PAN (1<<2) +#define SNDRV_EMUX_UPDATE_FMMOD (1<<3) +#define SNDRV_EMUX_UPDATE_TREMFREQ (1<<4) +#define SNDRV_EMUX_UPDATE_FM2FRQ2 (1<<5) +#define SNDRV_EMUX_UPDATE_Q (1<<6) + + +#ifdef SNDRV_EMUX_USE_RAW_EFFECT +/* + * effect table + */ +struct snd_emux_effect_table { + /* Emu8000 specific effects */ + short val[EMUX_NUM_EFFECTS]; + unsigned char flag[EMUX_NUM_EFFECTS]; +}; +#endif /* SNDRV_EMUX_USE_RAW_EFFECT */ + + +/* + * prototypes - interface to Emu10k1 and Emu8k routines + */ +int snd_emux_new(struct snd_emux **remu); +int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name); +int snd_emux_free(struct snd_emux *emu); + +/* + * exported functions + */ +void snd_emux_terminate_all(struct snd_emux *emu); +void snd_emux_lock_voice(struct snd_emux *emu, int voice); +void snd_emux_unlock_voice(struct snd_emux *emu, int voice); + +#endif /* __SOUND_EMUX_SYNTH_H */ |