sound/synth/emux/emux_oss.c

   1 /*
   2  *  Interface for OSS sequencer emulation
   3  *
   4  *  Copyright (C) 1999 Takashi Iwai <tiwai@suse.de>
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  * Changes
  21  * 19990227   Steve Ratcliffe   Made separate file and merged in latest
  22  *                              midi emulation.
  23  */
  24
  25
  26 #ifdef CONFIG_SND_SEQUENCER_OSS
  27
  28 #include <asm/uaccess.h>
  29 #include <sound/core.h>
  30 #include "emux_voice.h"
  31 #include <sound/asoundef.h>
  32
  33 static int snd_emux_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure);
  34 static int snd_emux_close_seq_oss(struct snd_seq_oss_arg *arg);
  35 static int snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
  36                                   unsigned long ioarg);
  37 static int snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
  38                                        const char __user *buf, int offs, int count);
  39 static int snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg);
  40 static int snd_emux_event_oss_input(struct snd_seq_event *ev, int direct,
  41                                     void *private, int atomic, int hop);
  42 static void reset_port_mode(struct snd_emux_port *port, int midi_mode);
  43 static void emuspec_control(struct snd_emux *emu, struct snd_emux_port *port,
  44                             int cmd, unsigned char *event, int atomic, int hop);
  45 static void gusspec_control(struct snd_emux *emu, struct snd_emux_port *port,
  46                             int cmd, unsigned char *event, int atomic, int hop);
  47 static void fake_event(struct snd_emux *emu, struct snd_emux_port *port,
  48                        int ch, int param, int val, int atomic, int hop);
  49
  50 /* operators */
  51 static struct snd_seq_oss_callback oss_callback = {
  52         .owner = THIS_MODULE,
  53         .open = snd_emux_open_seq_oss,
  54         .close = snd_emux_close_seq_oss,
  55         .ioctl = snd_emux_ioctl_seq_oss,
  56         .load_patch = snd_emux_load_patch_seq_oss,
  57         .reset = snd_emux_reset_seq_oss,
  58 };
  59
  60
  61 /*
  62  * register OSS synth
  63  */
  64
  65 void
  66 snd_emux_init_seq_oss(struct snd_emux *emu)
  67 {
  68         struct snd_seq_oss_reg *arg;
  69         struct snd_seq_device *dev;
  70
  71         if (snd_seq_device_new(emu->card, 0, SNDRV_SEQ_DEV_ID_OSS,
  72                                sizeof(struct snd_seq_oss_reg), &dev) < 0)
  73                 return;
  74
  75         emu->oss_synth = dev;
  76         strcpy(dev->name, emu->name);
  77         arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
  78         arg->type = SYNTH_TYPE_SAMPLE;
  79         arg->subtype = SAMPLE_TYPE_AWE32;
  80         arg->nvoices = emu->max_voices;
  81         arg->oper = oss_callback;
  82         arg->private_data = emu;
  83
  84         /* register to OSS synth table */
  85         snd_device_register(emu->card, dev);
  86 }
  87
  88
  89 /*
  90  * unregister
  91  */
  92 void
  93 snd_emux_detach_seq_oss(struct snd_emux *emu)
  94 {
  95         if (emu->oss_synth) {
  96                 snd_device_free(emu->card, emu->oss_synth);
  97                 emu->oss_synth = NULL;
  98         }
  99 }
 100
 101
 102 /* use port number as a unique soundfont client number */
 103 #define SF_CLIENT_NO(p) ((p) + 0x1000)
 104
 105 /*
 106  * open port for OSS sequencer
 107  */
 108 static int
 109 snd_emux_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
 110 {
 111         struct snd_emux *emu;
 112         struct snd_emux_port *p;
 113         struct snd_seq_port_callback callback;
 114         char tmpname[64];
 115
 116         emu = closure;
 117         snd_assert(arg != NULL && emu != NULL, return -ENXIO);
 118
 119         mutex_lock(&emu->register_mutex);
 120
 121         if (!snd_emux_inc_count(emu)) {
 122                 mutex_unlock(&emu->register_mutex);
 123                 return -EFAULT;
 124         }
 125
 126         memset(&callback, 0, sizeof(callback));
 127         callback.owner = THIS_MODULE;
 128         callback.event_input = snd_emux_event_oss_input;
 129
 130         sprintf(tmpname, "%s OSS Port", emu->name);
 131         p = snd_emux_create_port(emu, tmpname, 32,
 132                                  1, &callback);
 133         if (p == NULL) {
 134                 snd_printk("can't create port\n");
 135                 snd_emux_dec_count(emu);
 136                 mutex_unlock(&emu->register_mutex);
 137                 return -ENOMEM;
 138         }
 139
 140         /* fill the argument data */
 141         arg->private_data = p;
 142         arg->addr.client = p->chset.client;
 143         arg->addr.port = p->chset.port;
 144         p->oss_arg = arg;
 145
 146         reset_port_mode(p, arg->seq_mode);
 147
 148         snd_emux_reset_port(p);
 149
 150         mutex_unlock(&emu->register_mutex);
 151         return 0;
 152 }
 153
 154
 155 #define DEFAULT_DRUM_FLAGS      ((1<<9) | (1<<25))
 156
 157 /*
 158  * reset port mode
 159  */
 160 static void
 161 reset_port_mode(struct snd_emux_port *port, int midi_mode)
 162 {
 163         if (midi_mode) {
 164                 port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_MIDI;
 165                 port->drum_flags = DEFAULT_DRUM_FLAGS;
 166                 port->volume_atten = 0;
 167                 port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_KEYPRESS;
 168         } else {
 169                 port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_SYNTH;
 170                 port->drum_flags = 0;
 171                 port->volume_atten = 32;
 172                 port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_EVENTS;
 173         }
 174 }
 175
 176
 177 /*
 178  * close port
 179  */
 180 static int
 181 snd_emux_close_seq_oss(struct snd_seq_oss_arg *arg)
 182 {
 183         struct snd_emux *emu;
 184         struct snd_emux_port *p;
 185
 186         snd_assert(arg != NULL, return -ENXIO);
 187         p = arg->private_data;
 188         snd_assert(p != NULL, return -ENXIO);
 189
 190         emu = p->emu;
 191         snd_assert(emu != NULL, return -ENXIO);
 192
 193         mutex_lock(&emu->register_mutex);
 194         snd_emux_sounds_off_all(p);
 195         snd_soundfont_close_check(emu->sflist, SF_CLIENT_NO(p->chset.port));
 196         snd_seq_event_port_detach(p->chset.client, p->chset.port);
 197         snd_emux_dec_count(emu);
 198
 199         mutex_unlock(&emu->register_mutex);
 200         return 0;
 201 }
 202
 203
 204 /*
 205  * load patch
 206  */
 207 static int
 208 snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
 209                             const char __user *buf, int offs, int count)
 210 {
 211         struct snd_emux *emu;
 212         struct snd_emux_port *p;
 213         int rc;
 214
 215         snd_assert(arg != NULL, return -ENXIO);
 216         p = arg->private_data;
 217         snd_assert(p != NULL, return -ENXIO);
 218
 219         emu = p->emu;
 220         snd_assert(emu != NULL, return -ENXIO);
 221
 222         if (format == GUS_PATCH)
 223                 rc = snd_soundfont_load_guspatch(emu->sflist, buf, count,
 224                                                  SF_CLIENT_NO(p->chset.port));
 225         else if (format == SNDRV_OSS_SOUNDFONT_PATCH) {
 226                 struct soundfont_patch_info patch;
 227                 if (count < (int)sizeof(patch))
 228                         rc = -EINVAL;
 229                 if (copy_from_user(&patch, buf, sizeof(patch)))
 230                         rc = -EFAULT;
 231                 if (patch.type >= SNDRV_SFNT_LOAD_INFO &&
 232                     patch.type <= SNDRV_SFNT_PROBE_DATA)
 233                         rc = snd_soundfont_load(emu->sflist, buf, count, SF_CLIENT_NO(p->chset.port));
 234                 else {
 235                         if (emu->ops.load_fx)
 236                                 rc = emu->ops.load_fx(emu, patch.type, patch.optarg, buf, count);
 237                         else
 238                                 rc = -EINVAL;
 239                 }
 240         } else
 241                 rc = 0;
 242         return rc;
 243 }
 244
 245
 246 /*
 247  * ioctl
 248  */
 249 static int
 250 snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg)
 251 {
 252         struct snd_emux_port *p;
 253         struct snd_emux *emu;
 254
 255         snd_assert(arg != NULL, return -ENXIO);
 256         p = arg->private_data;
 257         snd_assert(p != NULL, return -ENXIO);
 258
 259         emu = p->emu;
 260         snd_assert(emu != NULL, return -ENXIO);
 261
 262         switch (cmd) {
 263         case SNDCTL_SEQ_RESETSAMPLES:
 264                 snd_soundfont_remove_samples(emu->sflist);
 265                 return 0;
 266
 267         case SNDCTL_SYNTH_MEMAVL:
 268                 if (emu->memhdr)
 269                         return snd_util_mem_avail(emu->memhdr);
 270                 return 0;
 271         }
 272
 273         return 0;
 274 }
 275
 276
 277 /*
 278  * reset device
 279  */
 280 static int
 281 snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg)
 282 {
 283         struct snd_emux_port *p;
 284
 285         snd_assert(arg != NULL, return -ENXIO);
 286         p = arg->private_data;
 287         snd_assert(p != NULL, return -ENXIO);
 288         snd_emux_reset_port(p);
 289         return 0;
 290 }
 291
 292
 293 /*
 294  * receive raw events: only SEQ_PRIVATE is accepted.
 295  */
 296 static int
 297 snd_emux_event_oss_input(struct snd_seq_event *ev, int direct, void *private_data,
 298                          int atomic, int hop)
 299 {
 300         struct snd_emux *emu;
 301         struct snd_emux_port *p;
 302         unsigned char cmd, *data;
 303
 304         p = private_data;
 305         snd_assert(p != NULL, return -EINVAL);
 306         emu = p->emu;
 307         snd_assert(emu != NULL, return -EINVAL);
 308         if (ev->type != SNDRV_SEQ_EVENT_OSS)
 309                 return snd_emux_event_input(ev, direct, private_data, atomic, hop);
 310
 311         data = ev->data.raw8.d;
 312         /* only SEQ_PRIVATE is accepted */
 313         if (data[0] != 0xfe)
 314                 return 0;
 315         cmd = data[2] & _EMUX_OSS_MODE_VALUE_MASK;
 316         if (data[2] & _EMUX_OSS_MODE_FLAG)
 317                 emuspec_control(emu, p, cmd, data, atomic, hop);
 318         else
 319                 gusspec_control(emu, p, cmd, data, atomic, hop);
 320         return 0;
 321 }
 322
 323
 324 /*
 325  * OSS/AWE driver specific h/w controls
 326  */
 327 static void
 328 emuspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd,
 329                 unsigned char *event, int atomic, int hop)
 330 {
 331         int voice;
 332         unsigned short p1;
 333         short p2;
 334         int i;
 335         struct snd_midi_channel *chan;
 336
 337         voice = event[3];
 338         if (voice < 0 || voice >= port->chset.max_channels)
 339                 chan = NULL;
 340         else
 341                 chan = &port->chset.channels[voice];
 342
 343         p1 = *(unsigned short *) &event[4];
 344         p2 = *(short *) &event[6];
 345
 346         switch (cmd) {
 347 #if 0 /* don't do this atomically */
 348         case _EMUX_OSS_REMOVE_LAST_SAMPLES:
 349                 snd_soundfont_remove_unlocked(emu->sflist);
 350                 break;
 351 #endif
 352         case _EMUX_OSS_SEND_EFFECT:
 353                 if (chan)
 354                         snd_emux_send_effect_oss(port, chan, p1, p2);
 355                 break;
 356
 357         case _EMUX_OSS_TERMINATE_ALL:
 358                 snd_emux_terminate_all(emu);
 359                 break;
 360
 361         case _EMUX_OSS_TERMINATE_CHANNEL:
 362                 /*snd_emux_mute_channel(emu, chan);*/
 363                 break;
 364         case _EMUX_OSS_RESET_CHANNEL:
 365                 /*snd_emux_channel_init(chset, chan);*/
 366                 break;
 367
 368         case _EMUX_OSS_RELEASE_ALL:
 369                 fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop);
 370                 break;
 371         case _EMUX_OSS_NOTEOFF_ALL:
 372                 fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop);
 373                 break;
 374
 375         case _EMUX_OSS_INITIAL_VOLUME:
 376                 if (p2) {
 377                         port->volume_atten = (short)p1;
 378                         snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME);
 379                 }
 380                 break;
 381
 382         case _EMUX_OSS_CHN_PRESSURE:
 383                 if (chan) {
 384                         chan->midi_pressure = p1;
 385                         snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2);
 386                 }
 387                 break;
 388
 389         case _EMUX_OSS_CHANNEL_MODE:
 390                 reset_port_mode(port, p1);
 391                 snd_emux_reset_port(port);
 392                 break;
 393
 394         case _EMUX_OSS_DRUM_CHANNELS:
 395                 port->drum_flags = *(unsigned int*)&event[4];
 396                 for (i = 0; i < port->chset.max_channels; i++) {
 397                         chan = &port->chset.channels[i];
 398                         chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0;
 399                 }
 400                 break;
 401
 402         case _EMUX_OSS_MISC_MODE:
 403                 if (p1 < EMUX_MD_END)
 404                         port->ctrls[p1] = p2;
 405                 break;
 406         case _EMUX_OSS_DEBUG_MODE:
 407                 break;
 408
 409         default:
 410                 if (emu->ops.oss_ioctl)
 411                         emu->ops.oss_ioctl(emu, cmd, p1, p2);
 412                 break;
 413         }
 414 }
 415
 416 /*
 417  * GUS specific h/w controls
 418  */
 419
 420 #include <linux/ultrasound.h>
 421
 422 static void
 423 gusspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd,
 424                 unsigned char *event, int atomic, int hop)
 425 {
 426         int voice;
 427         unsigned short p1;
 428         short p2;
 429         int plong;
 430         struct snd_midi_channel *chan;
 431
 432         if (port->port_mode != SNDRV_EMUX_PORT_MODE_OSS_SYNTH)
 433                 return;
 434         if (cmd == _GUS_NUMVOICES)
 435                 return;
 436         voice = event[3];
 437         if (voice < 0 || voice >= port->chset.max_channels)
 438                 return;
 439
 440         chan = &port->chset.channels[voice];
 441
 442         p1 = *(unsigned short *) &event[4];
 443         p2 = *(short *) &event[6];
 444         plong = *(int*) &event[4];
 445
 446         switch (cmd) {
 447         case _GUS_VOICESAMPLE:
 448                 chan->midi_program = p1;
 449                 return;
 450
 451         case _GUS_VOICEBALA:
 452                 /* 0 to 15 --> 0 to 127 */
 453                 chan->control[MIDI_CTL_MSB_PAN] = (int)p1 << 3;
 454                 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN);
 455                 return;
 456
 457         case _GUS_VOICEVOL:
 458         case _GUS_VOICEVOL2:
 459                 /* not supported yet */
 460                 return;
 461
 462         case _GUS_RAMPRANGE:
 463         case _GUS_RAMPRATE:
 464         case _GUS_RAMPMODE:
 465         case _GUS_RAMPON:
 466         case _GUS_RAMPOFF:
 467                 /* volume ramping not supported */
 468                 return;
 469
 470         case _GUS_VOLUME_SCALE:
 471                 return;
 472
 473         case _GUS_VOICE_POS:
 474 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
 475                 snd_emux_send_effect(port, chan, EMUX_FX_SAMPLE_START,
 476                                      (short)(plong & 0x7fff),
 477                                      EMUX_FX_FLAG_SET);
 478                 snd_emux_send_effect(port, chan, EMUX_FX_COARSE_SAMPLE_START,
 479                                      (plong >> 15) & 0xffff,
 480                                      EMUX_FX_FLAG_SET);
 481 #endif
 482                 return;
 483         }
 484 }
 485
 486
 487 /*
 488  * send an event to midi emulation
 489  */
 490 static void
 491 fake_event(struct snd_emux *emu, struct snd_emux_port *port, int ch, int param, int val, int atomic, int hop)
 492 {
 493         struct snd_seq_event ev;
 494         memset(&ev, 0, sizeof(ev));
 495         ev.type = SNDRV_SEQ_EVENT_CONTROLLER;
 496         ev.data.control.channel = ch;
 497         ev.data.control.param = param;
 498         ev.data.control.value = val;
 499         snd_emux_event_input(&ev, 0, port, atomic, hop);
 500 }
 501
 502 #endif /* CONFIG_SND_SEQUENCER_OSS */