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 if (snd_BUG_ON(!arg || !emu)) 118 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(KERN_ERR "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 if (snd_BUG_ON(!arg)) 188 return -ENXIO; 189 p = arg->private_data; 190 if (snd_BUG_ON(!p)) 191 return -ENXIO; 192 193 emu = p->emu; 194 if (snd_BUG_ON(!emu)) 195 return -ENXIO; 196 197 mutex_lock(&emu->register_mutex); 198 snd_emux_sounds_off_all(p); 199 snd_soundfont_close_check(emu->sflist, SF_CLIENT_NO(p->chset.port)); 200 snd_seq_event_port_detach(p->chset.client, p->chset.port); 201 snd_emux_dec_count(emu); 202 203 mutex_unlock(&emu->register_mutex); 204 return 0; 205 } 206 207 208 /* 209 * load patch 210 */ 211 static int 212 snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, 213 const char __user *buf, int offs, int count) 214 { 215 struct snd_emux *emu; 216 struct snd_emux_port *p; 217 int rc; 218 219 if (snd_BUG_ON(!arg)) 220 return -ENXIO; 221 p = arg->private_data; 222 if (snd_BUG_ON(!p)) 223 return -ENXIO; 224 225 emu = p->emu; 226 if (snd_BUG_ON(!emu)) 227 return -ENXIO; 228 229 if (format == GUS_PATCH) 230 rc = snd_soundfont_load_guspatch(emu->sflist, buf, count, 231 SF_CLIENT_NO(p->chset.port)); 232 else if (format == SNDRV_OSS_SOUNDFONT_PATCH) { 233 struct soundfont_patch_info patch; 234 if (count < (int)sizeof(patch)) 235 rc = -EINVAL; 236 if (copy_from_user(&patch, buf, sizeof(patch))) 237 rc = -EFAULT; 238 if (patch.type >= SNDRV_SFNT_LOAD_INFO && 239 patch.type <= SNDRV_SFNT_PROBE_DATA) 240 rc = snd_soundfont_load(emu->sflist, buf, count, SF_CLIENT_NO(p->chset.port)); 241 else { 242 if (emu->ops.load_fx) 243 rc = emu->ops.load_fx(emu, patch.type, patch.optarg, buf, count); 244 else 245 rc = -EINVAL; 246 } 247 } else 248 rc = 0; 249 return rc; 250 } 251 252 253 /* 254 * ioctl 255 */ 256 static int 257 snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg) 258 { 259 struct snd_emux_port *p; 260 struct snd_emux *emu; 261 262 if (snd_BUG_ON(!arg)) 263 return -ENXIO; 264 p = arg->private_data; 265 if (snd_BUG_ON(!p)) 266 return -ENXIO; 267 268 emu = p->emu; 269 if (snd_BUG_ON(!emu)) 270 return -ENXIO; 271 272 switch (cmd) { 273 case SNDCTL_SEQ_RESETSAMPLES: 274 snd_soundfont_remove_samples(emu->sflist); 275 return 0; 276 277 case SNDCTL_SYNTH_MEMAVL: 278 if (emu->memhdr) 279 return snd_util_mem_avail(emu->memhdr); 280 return 0; 281 } 282 283 return 0; 284 } 285 286 287 /* 288 * reset device 289 */ 290 static int 291 snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg) 292 { 293 struct snd_emux_port *p; 294 295 if (snd_BUG_ON(!arg)) 296 return -ENXIO; 297 p = arg->private_data; 298 if (snd_BUG_ON(!p)) 299 return -ENXIO; 300 snd_emux_reset_port(p); 301 return 0; 302 } 303 304 305 /* 306 * receive raw events: only SEQ_PRIVATE is accepted. 307 */ 308 static int 309 snd_emux_event_oss_input(struct snd_seq_event *ev, int direct, void *private_data, 310 int atomic, int hop) 311 { 312 struct snd_emux *emu; 313 struct snd_emux_port *p; 314 unsigned char cmd, *data; 315 316 p = private_data; 317 if (snd_BUG_ON(!p)) 318 return -EINVAL; 319 emu = p->emu; 320 if (snd_BUG_ON(!emu)) 321 return -EINVAL; 322 if (ev->type != SNDRV_SEQ_EVENT_OSS) 323 return snd_emux_event_input(ev, direct, private_data, atomic, hop); 324 325 data = ev->data.raw8.d; 326 /* only SEQ_PRIVATE is accepted */ 327 if (data[0] != 0xfe) 328 return 0; 329 cmd = data[2] & _EMUX_OSS_MODE_VALUE_MASK; 330 if (data[2] & _EMUX_OSS_MODE_FLAG) 331 emuspec_control(emu, p, cmd, data, atomic, hop); 332 else 333 gusspec_control(emu, p, cmd, data, atomic, hop); 334 return 0; 335 } 336 337 338 /* 339 * OSS/AWE driver specific h/w controls 340 */ 341 static void 342 emuspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd, 343 unsigned char *event, int atomic, int hop) 344 { 345 int voice; 346 unsigned short p1; 347 short p2; 348 int i; 349 struct snd_midi_channel *chan; 350 351 voice = event[3]; 352 if (voice < 0 || voice >= port->chset.max_channels) 353 chan = NULL; 354 else 355 chan = &port->chset.channels[voice]; 356 357 p1 = *(unsigned short *) &event[4]; 358 p2 = *(short *) &event[6]; 359 360 switch (cmd) { 361 #if 0 /* don't do this atomically */ 362 case _EMUX_OSS_REMOVE_LAST_SAMPLES: 363 snd_soundfont_remove_unlocked(emu->sflist); 364 break; 365 #endif 366 case _EMUX_OSS_SEND_EFFECT: 367 if (chan) 368 snd_emux_send_effect_oss(port, chan, p1, p2); 369 break; 370 371 case _EMUX_OSS_TERMINATE_ALL: 372 snd_emux_terminate_all(emu); 373 break; 374 375 case _EMUX_OSS_TERMINATE_CHANNEL: 376 /*snd_emux_mute_channel(emu, chan);*/ 377 break; 378 case _EMUX_OSS_RESET_CHANNEL: 379 /*snd_emux_channel_init(chset, chan);*/ 380 break; 381 382 case _EMUX_OSS_RELEASE_ALL: 383 fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop); 384 break; 385 case _EMUX_OSS_NOTEOFF_ALL: 386 fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop); 387 break; 388 389 case _EMUX_OSS_INITIAL_VOLUME: 390 if (p2) { 391 port->volume_atten = (short)p1; 392 snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME); 393 } 394 break; 395 396 case _EMUX_OSS_CHN_PRESSURE: 397 if (chan) { 398 chan->midi_pressure = p1; 399 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2); 400 } 401 break; 402 403 case _EMUX_OSS_CHANNEL_MODE: 404 reset_port_mode(port, p1); 405 snd_emux_reset_port(port); 406 break; 407 408 case _EMUX_OSS_DRUM_CHANNELS: 409 port->drum_flags = *(unsigned int*)&event[4]; 410 for (i = 0; i < port->chset.max_channels; i++) { 411 chan = &port->chset.channels[i]; 412 chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0; 413 } 414 break; 415 416 case _EMUX_OSS_MISC_MODE: 417 if (p1 < EMUX_MD_END) 418 port->ctrls[p1] = p2; 419 break; 420 case _EMUX_OSS_DEBUG_MODE: 421 break; 422 423 default: 424 if (emu->ops.oss_ioctl) 425 emu->ops.oss_ioctl(emu, cmd, p1, p2); 426 break; 427 } 428 } 429 430 /* 431 * GUS specific h/w controls 432 */ 433 434 #include <linux/ultrasound.h> 435 436 static void 437 gusspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd, 438 unsigned char *event, int atomic, int hop) 439 { 440 int voice; 441 unsigned short p1; 442 short p2; 443 int plong; 444 struct snd_midi_channel *chan; 445 446 if (port->port_mode != SNDRV_EMUX_PORT_MODE_OSS_SYNTH) 447 return; 448 if (cmd == _GUS_NUMVOICES) 449 return; 450 voice = event[3]; 451 if (voice < 0 || voice >= port->chset.max_channels) 452 return; 453 454 chan = &port->chset.channels[voice]; 455 456 p1 = *(unsigned short *) &event[4]; 457 p2 = *(short *) &event[6]; 458 plong = *(int*) &event[4]; 459 460 switch (cmd) { 461 case _GUS_VOICESAMPLE: 462 chan->midi_program = p1; 463 return; 464 465 case _GUS_VOICEBALA: 466 /* 0 to 15 --> 0 to 127 */ 467 chan->control[MIDI_CTL_MSB_PAN] = (int)p1 << 3; 468 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN); 469 return; 470 471 case _GUS_VOICEVOL: 472 case _GUS_VOICEVOL2: 473 /* not supported yet */ 474 return; 475 476 case _GUS_RAMPRANGE: 477 case _GUS_RAMPRATE: 478 case _GUS_RAMPMODE: 479 case _GUS_RAMPON: 480 case _GUS_RAMPOFF: 481 /* volume ramping not supported */ 482 return; 483 484 case _GUS_VOLUME_SCALE: 485 return; 486 487 case _GUS_VOICE_POS: 488 #ifdef SNDRV_EMUX_USE_RAW_EFFECT 489 snd_emux_send_effect(port, chan, EMUX_FX_SAMPLE_START, 490 (short)(plong & 0x7fff), 491 EMUX_FX_FLAG_SET); 492 snd_emux_send_effect(port, chan, EMUX_FX_COARSE_SAMPLE_START, 493 (plong >> 15) & 0xffff, 494 EMUX_FX_FLAG_SET); 495 #endif 496 return; 497 } 498 } 499 500 501 /* 502 * send an event to midi emulation 503 */ 504 static void 505 fake_event(struct snd_emux *emu, struct snd_emux_port *port, int ch, int param, int val, int atomic, int hop) 506 { 507 struct snd_seq_event ev; 508 memset(&ev, 0, sizeof(ev)); 509 ev.type = SNDRV_SEQ_EVENT_CONTROLLER; 510 ev.data.control.channel = ch; 511 ev.data.control.param = param; 512 ev.data.control.value = val; 513 snd_emux_event_input(&ev, 0, port, atomic, hop); 514 } 515 516 #endif /* CONFIG_SND_SEQUENCER_OSS */ 517