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