release/src-rt-6.x/linux/linux-2.6/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(struct snd_seq_oss_arg *arg, void *closure);
  35 static int snd_emux_close_seq_oss(struct snd_seq_oss_arg *arg);
  36 static int snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd,
  37                                   unsigned long ioarg);
  38 static int snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
  39                                        const char __user *buf, int offs, int count);
  40 static int snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg);
  41 static int snd_emux_event_oss_input(struct snd_seq_event *ev, int direct,
  42                                     void *private, int atomic, int hop);
  43 static void reset_port_mode(struct snd_emux_port *port, int midi_mode);
  44 static void emuspec_control(struct snd_emux *emu, struct snd_emux_port *port,
  45                             int cmd, unsigned char *event, int atomic, int hop);
  46 static void gusspec_control(struct snd_emux *emu, struct snd_emux_port *port,
  47                             int cmd, unsigned char *event, int atomic, int hop);
  48 static void fake_event(struct snd_emux *emu, struct snd_emux_port *port,
  49                        int ch, int param, int val, int atomic, int hop);
  50
  51 /* operators */
  52 static struct snd_seq_oss_callback oss_callback = {
  53         .owner = THIS_MODULE,
  54         .open = snd_emux_open_seq_oss,
  55         .close = snd_emux_close_seq_oss,
  56         .ioctl = snd_emux_ioctl_seq_oss,
  57         .load_patch = snd_emux_load_patch_seq_oss,
  58         .reset = snd_emux_reset_seq_oss,
  59 };
  60
  61
  62 /*
  63  * register OSS synth
  64  */
  65
  66 void
  67 snd_emux_init_seq_oss(struct snd_emux *emu)
  68 {
  69         struct snd_seq_oss_reg *arg;
  70         struct snd_seq_device *dev;
  71
  72         if (snd_seq_device_new(emu->card, 0, SNDRV_SEQ_DEV_ID_OSS,
  73                                sizeof(struct snd_seq_oss_reg), &dev) < 0)
  74                 return;
  75
  76         emu->oss_synth = dev;
  77         strcpy(dev->name, emu->name);
  78         arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
  79         arg->type = SYNTH_TYPE_SAMPLE;
  80         arg->subtype = SAMPLE_TYPE_AWE32;
  81         arg->nvoices = emu->max_voices;
  82         arg->oper = oss_callback;
  83         arg->private_data = emu;
  84
  85         /* register to OSS synth table */
  86         snd_device_register(emu->card, dev);
  87 }
  88
  89
  90 /*
  91  * unregister
  92  */
  93 void
  94 snd_emux_detach_seq_oss(struct snd_emux *emu)
  95 {
  96         if (emu->oss_synth) {
  97                 snd_device_free(emu->card, emu->oss_synth);
  98                 emu->oss_synth = NULL;
  99         }
 100 }
 101
 102
 103 /* use port number as a unique soundfont client number */
 104 #define SF_CLIENT_NO(p) ((p) + 0x1000)
 105
 106 /*
 107  * open port for OSS sequencer
 108  */
 109 static int
 110 snd_emux_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure)
 111 {
 112         struct snd_emux *emu;
 113         struct snd_emux_port *p;
 114         struct snd_seq_port_callback callback;
 115         char tmpname[64];
 116
 117         emu = closure;
 118         snd_assert(arg != NULL && emu != NULL, return -ENXIO);
 119
 120         mutex_lock(&emu->register_mutex);
 121
 122         if (!snd_emux_inc_count(emu)) {
 123                 mutex_unlock(&emu->register_mutex);
 124                 return -EFAULT;
 125         }
 126
 127         memset(&callback, 0, sizeof(callback));
 128         callback.owner = THIS_MODULE;
 129         callback.event_input = snd_emux_event_oss_input;
 130
 131         sprintf(tmpname, "%s OSS Port", emu->name);
 132         p = snd_emux_create_port(emu, tmpname, 32,
 133                                  1, &callback);
 134         if (p == NULL) {
 135                 snd_printk("can't create port\n");
 136                 snd_emux_dec_count(emu);
 137                 mutex_unlock(&emu->register_mutex);
 138                 return -ENOMEM;
 139         }
 140
 141         /* fill the argument data */
 142         arg->private_data = p;
 143         arg->addr.client = p->chset.client;
 144         arg->addr.port = p->chset.port;
 145         p->oss_arg = arg;
 146
 147         reset_port_mode(p, arg->seq_mode);
 148
 149         snd_emux_reset_port(p);
 150
 151         mutex_unlock(&emu->register_mutex);
 152         return 0;
 153 }
 154
 155
 156 #define DEFAULT_DRUM_FLAGS      ((1<<9) | (1<<25))
 157
 158 /*
 159  * reset port mode
 160  */
 161 static void
 162 reset_port_mode(struct snd_emux_port *port, int midi_mode)
 163 {
 164         if (midi_mode) {
 165                 port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_MIDI;
 166                 port->drum_flags = DEFAULT_DRUM_FLAGS;
 167                 port->volume_atten = 0;
 168                 port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_KEYPRESS;
 169         } else {
 170                 port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_SYNTH;
 171                 port->drum_flags = 0;
 172                 port->volume_atten = 32;
 173                 port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_EVENTS;
 174         }
 175 }
 176
 177
 178 /*
 179  * close port
 180  */
 181 static int
 182 snd_emux_close_seq_oss(struct snd_seq_oss_arg *arg)
 183 {
 184         struct snd_emux *emu;
 185         struct snd_emux_port *p;
 186
 187         snd_assert(arg != NULL, return -ENXIO);
 188         p = arg->private_data;
 189         snd_assert(p != NULL, return -ENXIO);
 190
 191         emu = p->emu;
 192         snd_assert(emu != NULL, return -ENXIO);
 193
 194         mutex_lock(&emu->register_mutex);
 195         snd_emux_sounds_off_all(p);
 196         snd_soundfont_close_check(emu->sflist, SF_CLIENT_NO(p->chset.port));
 197         snd_seq_event_port_detach(p->chset.client, p->chset.port);
 198         snd_emux_dec_count(emu);
 199
 200         mutex_unlock(&emu->register_mutex);
 201         return 0;
 202 }
 203
 204
 205 /*
 206  * load patch
 207  */
 208 static int
 209 snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format,
 210                             const char __user *buf, int offs, int count)
 211 {
 212         struct snd_emux *emu;
 213         struct snd_emux_port *p;
 214         int rc;
 215
 216         snd_assert(arg != NULL, return -ENXIO);
 217         p = arg->private_data;
 218         snd_assert(p != NULL, return -ENXIO);
 219
 220         emu = p->emu;
 221         snd_assert(emu != NULL, return -ENXIO);
 222
 223         if (format == GUS_PATCH)
 224                 rc = snd_soundfont_load_guspatch(emu->sflist, buf, count,
 225                                                  SF_CLIENT_NO(p->chset.port));
 226         else if (format == SNDRV_OSS_SOUNDFONT_PATCH) {
 227                 struct soundfont_patch_info patch;
 228                 if (count < (int)sizeof(patch))
 229                         rc = -EINVAL;
 230                 if (copy_from_user(&patch, buf, sizeof(patch)))
 231                         rc = -EFAULT;
 232                 if (patch.type >= SNDRV_SFNT_LOAD_INFO &&
 233                     patch.type <= SNDRV_SFNT_PROBE_DATA)
 234                         rc = snd_soundfont_load(emu->sflist, buf, count, SF_CLIENT_NO(p->chset.port));
 235                 else {
 236                         if (emu->ops.load_fx)
 237                                 rc = emu->ops.load_fx(emu, patch.type, patch.optarg, buf, count);
 238                         else
 239                                 rc = -EINVAL;
 240                 }
 241         } else
 242                 rc = 0;
 243         return rc;
 244 }
 245
 246
 247 /*
 248  * ioctl
 249  */
 250 static int
 251 snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg)
 252 {
 253         struct snd_emux_port *p;
 254         struct snd_emux *emu;
 255
 256         snd_assert(arg != NULL, return -ENXIO);
 257         p = arg->private_data;
 258         snd_assert(p != NULL, return -ENXIO);
 259
 260         emu = p->emu;
 261         snd_assert(emu != NULL, return -ENXIO);
 262
 263         switch (cmd) {
 264         case SNDCTL_SEQ_RESETSAMPLES:
 265                 snd_soundfont_remove_samples(emu->sflist);
 266                 return 0;
 267
 268         case SNDCTL_SYNTH_MEMAVL:
 269                 if (emu->memhdr)
 270                         return snd_util_mem_avail(emu->memhdr);
 271                 return 0;
 272         }
 273
 274         return 0;
 275 }
 276
 277
 278 /*
 279  * reset device
 280  */
 281 static int
 282 snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg)
 283 {
 284         struct snd_emux_port *p;
 285
 286         snd_assert(arg != NULL, return -ENXIO);
 287         p = arg->private_data;
 288         snd_assert(p != NULL, return -ENXIO);
 289         snd_emux_reset_port(p);
 290         return 0;
 291 }
 292
 293
 294 /*
 295  * receive raw events: only SEQ_PRIVATE is accepted.
 296  */
 297 static int
 298 snd_emux_event_oss_input(struct snd_seq_event *ev, int direct, void *private_data,
 299                          int atomic, int hop)
 300 {
 301         struct snd_emux *emu;
 302         struct snd_emux_port *p;
 303         unsigned char cmd, *data;
 304
 305         p = private_data;
 306         snd_assert(p != NULL, return -EINVAL);
 307         emu = p->emu;
 308         snd_assert(emu != NULL, return -EINVAL);
 309         if (ev->type != SNDRV_SEQ_EVENT_OSS)
 310                 return snd_emux_event_input(ev, direct, private_data, atomic, hop);
 311
 312         data = ev->data.raw8.d;
 313         /* only SEQ_PRIVATE is accepted */
 314         if (data[0] != 0xfe)
 315                 return 0;
 316         cmd = data[2] & _EMUX_OSS_MODE_VALUE_MASK;
 317         if (data[2] & _EMUX_OSS_MODE_FLAG)
 318                 emuspec_control(emu, p, cmd, data, atomic, hop);
 319         else
 320                 gusspec_control(emu, p, cmd, data, atomic, hop);
 321         return 0;
 322 }
 323
 324
 325 /*
 326  * OSS/AWE driver specific h/w controls
 327  */
 328 static void
 329 emuspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd,
 330                 unsigned char *event, int atomic, int hop)
 331 {
 332         int voice;
 333         unsigned short p1;
 334         short p2;
 335         int i;
 336         struct snd_midi_channel *chan;
 337
 338         voice = event[3];
 339         if (voice < 0 || voice >= port->chset.max_channels)
 340                 chan = NULL;
 341         else
 342                 chan = &port->chset.channels[voice];
 343
 344         p1 = *(unsigned short *) &event[4];
 345         p2 = *(short *) &event[6];
 346
 347         switch (cmd) {
 348 #if 0 /* don't do this atomically */
 349         case _EMUX_OSS_REMOVE_LAST_SAMPLES:
 350                 snd_soundfont_remove_unlocked(emu->sflist);
 351                 break;
 352 #endif
 353         case _EMUX_OSS_SEND_EFFECT:
 354                 if (chan)
 355                         snd_emux_send_effect_oss(port, chan, p1, p2);
 356                 break;
 357
 358         case _EMUX_OSS_TERMINATE_ALL:
 359                 snd_emux_terminate_all(emu);
 360                 break;
 361
 362         case _EMUX_OSS_TERMINATE_CHANNEL:
 363                 /*snd_emux_mute_channel(emu, chan);*/
 364                 break;
 365         case _EMUX_OSS_RESET_CHANNEL:
 366                 /*snd_emux_channel_init(chset, chan);*/
 367                 break;
 368
 369         case _EMUX_OSS_RELEASE_ALL:
 370                 fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop);
 371                 break;
 372         case _EMUX_OSS_NOTEOFF_ALL:
 373                 fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop);
 374                 break;
 375
 376         case _EMUX_OSS_INITIAL_VOLUME:
 377                 if (p2) {
 378                         port->volume_atten = (short)p1;
 379                         snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME);
 380                 }
 381                 break;
 382
 383         case _EMUX_OSS_CHN_PRESSURE:
 384                 if (chan) {
 385                         chan->midi_pressure = p1;
 386                         snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2);
 387                 }
 388                 break;
 389
 390         case _EMUX_OSS_CHANNEL_MODE:
 391                 reset_port_mode(port, p1);
 392                 snd_emux_reset_port(port);
 393                 break;
 394
 395         case _EMUX_OSS_DRUM_CHANNELS:
 396                 port->drum_flags = *(unsigned int*)&event[4];
 397                 for (i = 0; i < port->chset.max_channels; i++) {
 398                         chan = &port->chset.channels[i];
 399                         chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0;
 400                 }
 401                 break;
 402
 403         case _EMUX_OSS_MISC_MODE:
 404                 if (p1 < EMUX_MD_END)
 405                         port->ctrls[p1] = p2;
 406                 break;
 407         case _EMUX_OSS_DEBUG_MODE:
 408                 break;
 409
 410         default:
 411                 if (emu->ops.oss_ioctl)
 412                         emu->ops.oss_ioctl(emu, cmd, p1, p2);
 413                 break;
 414         }
 415 }
 416
 417 /*
 418  * GUS specific h/w controls
 419  */
 420
 421 #include <linux/ultrasound.h>
 422
 423 static void
 424 gusspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd,
 425                 unsigned char *event, int atomic, int hop)
 426 {
 427         int voice;
 428         unsigned short p1;
 429         short p2;
 430         int plong;
 431         struct snd_midi_channel *chan;
 432
 433         if (port->port_mode != SNDRV_EMUX_PORT_MODE_OSS_SYNTH)
 434                 return;
 435         if (cmd == _GUS_NUMVOICES)
 436                 return;
 437         voice = event[3];
 438         if (voice < 0 || voice >= port->chset.max_channels)
 439                 return;
 440
 441         chan = &port->chset.channels[voice];
 442
 443         p1 = *(unsigned short *) &event[4];
 444         p2 = *(short *) &event[6];
 445         plong = *(int*) &event[4];
 446
 447         switch (cmd) {
 448         case _GUS_VOICESAMPLE:
 449                 chan->midi_program = p1;
 450                 return;
 451
 452         case _GUS_VOICEBALA:
 453                 /* 0 to 15 --> 0 to 127 */
 454                 chan->control[MIDI_CTL_MSB_PAN] = (int)p1 << 3;
 455                 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN);
 456                 return;
 457
 458         case _GUS_VOICEVOL:
 459         case _GUS_VOICEVOL2:
 460                 /* not supported yet */
 461                 return;
 462
 463         case _GUS_RAMPRANGE:
 464         case _GUS_RAMPRATE:
 465         case _GUS_RAMPMODE:
 466         case _GUS_RAMPON:
 467         case _GUS_RAMPOFF:
 468                 /* volume ramping not supported */
 469                 return;
 470
 471         case _GUS_VOLUME_SCALE:
 472                 return;
 473
 474         case _GUS_VOICE_POS:
 475 #ifdef SNDRV_EMUX_USE_RAW_EFFECT
 476                 snd_emux_send_effect(port, chan, EMUX_FX_SAMPLE_START,
 477                                      (short)(plong & 0x7fff),
 478                                      EMUX_FX_FLAG_SET);
 479                 snd_emux_send_effect(port, chan, EMUX_FX_COARSE_SAMPLE_START,
 480                                      (plong >> 15) & 0xffff,
 481                                      EMUX_FX_FLAG_SET);
 482 #endif
 483                 return;
 484         }
 485 }
 486
 487
 488 /*
 489  * send an event to midi emulation
 490  */
 491 static void
 492 fake_event(struct snd_emux *emu, struct snd_emux_port *port, int ch, int param, int val, int atomic, int hop)
 493 {
 494         struct snd_seq_event ev;
 495         memset(&ev, 0, sizeof(ev));
 496         ev.type = SNDRV_SEQ_EVENT_CONTROLLER;
 497         ev.data.control.channel = ch;
 498         ev.data.control.param = param;
 499         ev.data.control.value = val;
 500         snd_emux_event_input(&ev, 0, port, atomic, hop);
 501 }
 502
 503 #endif /* CONFIG_SND_SEQUENCER_OSS */