/* *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, constvoid __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, constvoid __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 int (*get_pitch_shift)(struct snd_emux *emu);
};
/* *constantvalues
*/ #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)
/* *emuXwavetable
*/ 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 */ struct snd_emux_operators ops; /* operators */ void *hw; /* hardware */ unsignedlong flags; /* other conditions */ int midi_ports; /* number of virtual midi devices */ int midi_devidx; /* device offset of virtual midi */ unsignedint 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 */ constchar *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 */
char port_mode; /* operation mode */ int volume_atten; /* emuX raw attenuation */ unsignedlong 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 */
/* *Astructuretokeeptrackofeachhardwarevoice
*/ 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 */
unsignedint time; /* An allocation time */ unsignedchar note; /* Note currently assigned to this voice */ unsignedchar key; unsignedchar 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) */ unsignedlong ontime; /* jiffies at note triggered */
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