root/include/sound/emux_synth.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifndef __SOUND_EMUX_SYNTH_H
   3 #define __SOUND_EMUX_SYNTH_H
   4 
   5 /*
   6  *  Defines for the Emu-series WaveTable chip
   7  *
   8  *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
   9  */
  10 
  11 #include <sound/seq_kernel.h>
  12 #include <sound/seq_device.h>
  13 #include <sound/soundfont.h>
  14 #include <sound/seq_midi_emul.h>
  15 #include <sound/seq_oss.h>
  16 #include <sound/emux_legacy.h>
  17 #include <sound/seq_virmidi.h>
  18 
  19 /*
  20  * compile flags
  21  */
  22 #define SNDRV_EMUX_USE_RAW_EFFECT
  23 
  24 struct snd_emux;
  25 struct snd_emux_port;
  26 struct snd_emux_voice;
  27 struct snd_emux_effect_table;
  28 
  29 /*
  30  * operators
  31  */
  32 struct snd_emux_operators {
  33         struct module *owner;
  34         struct snd_emux_voice *(*get_voice)(struct snd_emux *emu,
  35                                             struct snd_emux_port *port);
  36         int (*prepare)(struct snd_emux_voice *vp);
  37         void (*trigger)(struct snd_emux_voice *vp);
  38         void (*release)(struct snd_emux_voice *vp);
  39         void (*update)(struct snd_emux_voice *vp, int update);
  40         void (*terminate)(struct snd_emux_voice *vp);
  41         void (*free_voice)(struct snd_emux_voice *vp);
  42         void (*reset)(struct snd_emux *emu, int ch);
  43         /* the first parameters are struct snd_emux */
  44         int (*sample_new)(struct snd_emux *emu, struct snd_sf_sample *sp,
  45                           struct snd_util_memhdr *hdr,
  46                           const void __user *data, long count);
  47         int (*sample_free)(struct snd_emux *emu, struct snd_sf_sample *sp,
  48                            struct snd_util_memhdr *hdr);
  49         void (*sample_reset)(struct snd_emux *emu);
  50         int (*load_fx)(struct snd_emux *emu, int type, int arg,
  51                        const void __user *data, long count);
  52         void (*sysex)(struct snd_emux *emu, char *buf, int len, int parsed,
  53                       struct snd_midi_channel_set *chset);
  54 #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
  55         int (*oss_ioctl)(struct snd_emux *emu, int cmd, int p1, int p2);
  56 #endif
  57 };
  58 
  59 
  60 /*
  61  * constant values
  62  */
  63 #define SNDRV_EMUX_MAX_PORTS            32      /* max # of sequencer ports */
  64 #define SNDRV_EMUX_MAX_VOICES           64      /* max # of voices */
  65 #define SNDRV_EMUX_MAX_MULTI_VOICES     16      /* max # of playable voices
  66                                                  * simultineously
  67                                                  */
  68 
  69 /*
  70  * flags
  71  */
  72 #define SNDRV_EMUX_ACCEPT_ROM           (1<<0)
  73 
  74 /*
  75  * emuX wavetable
  76  */
  77 struct snd_emux {
  78 
  79         struct snd_card *card;  /* assigned card */
  80 
  81         /* following should be initialized before registration */
  82         int max_voices;         /* Number of voices */
  83         int mem_size;           /* memory size (in byte) */
  84         int num_ports;          /* number of ports to be created */
  85         int pitch_shift;        /* pitch shift value (for Emu10k1) */
  86         struct snd_emux_operators ops;  /* operators */
  87         void *hw;               /* hardware */
  88         unsigned long flags;    /* other conditions */
  89         int midi_ports;         /* number of virtual midi devices */
  90         int midi_devidx;        /* device offset of virtual midi */
  91         unsigned int linear_panning: 1; /* panning is linear (sbawe = 1, emu10k1 = 0) */
  92         int hwdep_idx;          /* hwdep device index */
  93         struct snd_hwdep *hwdep;        /* hwdep device */
  94 
  95         /* private */
  96         int num_voices;         /* current number of voices */
  97         struct snd_sf_list *sflist;     /* root of SoundFont list */
  98         struct snd_emux_voice *voices;  /* Voices (EMU 'channel') */
  99         int use_time;   /* allocation counter */
 100         spinlock_t voice_lock;  /* Lock for voice access */
 101         struct mutex register_mutex;
 102         int client;             /* For the sequencer client */
 103         int ports[SNDRV_EMUX_MAX_PORTS];        /* The ports for this device */
 104         struct snd_emux_port *portptrs[SNDRV_EMUX_MAX_PORTS];
 105         int used;       /* use counter */
 106         char *name;     /* name of the device (internal) */
 107         struct snd_rawmidi **vmidi;
 108         struct timer_list tlist;        /* for pending note-offs */
 109         int timer_active;
 110 
 111         struct snd_util_memhdr *memhdr; /* memory chunk information */
 112 
 113 #ifdef CONFIG_SND_PROC_FS
 114         struct snd_info_entry *proc;
 115 #endif
 116 
 117 #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
 118         struct snd_seq_device *oss_synth;
 119 #endif
 120 };
 121 
 122 
 123 /*
 124  * sequencer port information
 125  */
 126 struct snd_emux_port {
 127 
 128         struct snd_midi_channel_set chset;
 129         struct snd_emux *emu;
 130 
 131         char port_mode;                 /* operation mode */
 132         int volume_atten;               /* emuX raw attenuation */
 133         unsigned long drum_flags;       /* drum bitmaps */
 134         int ctrls[EMUX_MD_END];         /* control parameters */
 135 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
 136         struct snd_emux_effect_table *effect;
 137 #endif
 138 #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
 139         struct snd_seq_oss_arg *oss_arg;
 140 #endif
 141 };
 142 
 143 /* port_mode */
 144 #define SNDRV_EMUX_PORT_MODE_MIDI               0       /* normal MIDI port */
 145 #define SNDRV_EMUX_PORT_MODE_OSS_SYNTH  1       /* OSS synth port */
 146 #define SNDRV_EMUX_PORT_MODE_OSS_MIDI   2       /* OSS multi channel synth port */
 147 
 148 /*
 149  * A structure to keep track of each hardware voice
 150  */
 151 struct snd_emux_voice {
 152         int  ch;                /* Hardware channel number */
 153 
 154         int  state;             /* status */
 155 #define SNDRV_EMUX_ST_OFF               0x00    /* Not playing, and inactive */
 156 #define SNDRV_EMUX_ST_ON                0x01    /* Note on */
 157 #define SNDRV_EMUX_ST_RELEASED  (0x02|SNDRV_EMUX_ST_ON) /* Note released */
 158 #define SNDRV_EMUX_ST_SUSTAINED (0x04|SNDRV_EMUX_ST_ON) /* Note sustained */
 159 #define SNDRV_EMUX_ST_STANDBY   (0x08|SNDRV_EMUX_ST_ON) /* Waiting to be triggered */
 160 #define SNDRV_EMUX_ST_PENDING   (0x10|SNDRV_EMUX_ST_ON) /* Note will be released */
 161 #define SNDRV_EMUX_ST_LOCKED            0x100   /* Not accessible */
 162 
 163         unsigned int  time;     /* An allocation time */
 164         unsigned char note;     /* Note currently assigned to this voice */
 165         unsigned char key;
 166         unsigned char velocity; /* Velocity of current note */
 167 
 168         struct snd_sf_zone *zone;       /* Zone assigned to this note */
 169         void *block;            /* sample block pointer (optional) */
 170         struct snd_midi_channel *chan;  /* Midi channel for this note */
 171         struct snd_emux_port *port;     /* associated port */
 172         struct snd_emux *emu;   /* assigned root info */
 173         void *hw;               /* hardware pointer (emu8000 or emu10k1) */
 174         unsigned long ontime;   /* jiffies at note triggered */
 175         
 176         /* Emu8k/Emu10k1 registers */
 177         struct soundfont_voice_info reg;
 178 
 179         /* additional registers */
 180         int avol;               /* volume attenuation */
 181         int acutoff;            /* cutoff target */
 182         int apitch;             /* pitch offset */
 183         int apan;               /* pan/aux pair */
 184         int aaux;
 185         int ptarget;            /* pitch target */
 186         int vtarget;            /* volume target */
 187         int ftarget;            /* filter target */
 188 
 189 };
 190 
 191 /*
 192  * update flags (can be combined)
 193  */
 194 #define SNDRV_EMUX_UPDATE_VOLUME                (1<<0)
 195 #define SNDRV_EMUX_UPDATE_PITCH         (1<<1)
 196 #define SNDRV_EMUX_UPDATE_PAN           (1<<2)
 197 #define SNDRV_EMUX_UPDATE_FMMOD         (1<<3)
 198 #define SNDRV_EMUX_UPDATE_TREMFREQ      (1<<4)
 199 #define SNDRV_EMUX_UPDATE_FM2FRQ2               (1<<5)
 200 #define SNDRV_EMUX_UPDATE_Q             (1<<6)
 201 
 202 
 203 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
 204 /*
 205  * effect table
 206  */
 207 struct snd_emux_effect_table {
 208         /* Emu8000 specific effects */
 209         short val[EMUX_NUM_EFFECTS];
 210         unsigned char flag[EMUX_NUM_EFFECTS];
 211 };
 212 #endif /* SNDRV_EMUX_USE_RAW_EFFECT */
 213 
 214 
 215 /*
 216  * prototypes - interface to Emu10k1 and Emu8k routines
 217  */
 218 int snd_emux_new(struct snd_emux **remu);
 219 int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name);
 220 int snd_emux_free(struct snd_emux *emu);
 221 
 222 /*
 223  * exported functions
 224  */
 225 void snd_emux_terminate_all(struct snd_emux *emu);
 226 void snd_emux_lock_voice(struct snd_emux *emu, int voice);
 227 void snd_emux_unlock_voice(struct snd_emux *emu, int voice);
 228 
 229 #endif /* __SOUND_EMUX_SYNTH_H */