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#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>
*
* 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 "seq_kernel.h"
#include "seq_device.h"
#include "soundfont.h"
#include "seq_midi_emul.h"
#ifdef CONFIG_SND_SEQUENCER_OSS
#include "seq_oss.h"
#endif
#include "emux_legacy.h"
#include "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);
#ifdef 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_PROC_FS
struct snd_info_entry *proc;
#endif

#ifdef 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
#ifdef 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 */
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