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 <linux/export.h> 29 #include <linux/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 if (snd_BUG_ON(!arg || !emu)) 119 return -ENXIO; 120 121 if (!snd_emux_inc_count(emu)) 122 return -EFAULT; 123 124 memset(&callback, 0, sizeof(callback)); 125 callback.owner = THIS_MODULE; 126 callback.event_input = snd_emux_event_oss_input; 127 128 sprintf(tmpname, "%s OSS Port", emu->name); 129 p = snd_emux_create_port(emu, tmpname, 32, 130 1, &callback); 131 if (p == NULL) { 132 snd_printk(KERN_ERR "can't create port\n"); 133 snd_emux_dec_count(emu); 134 return -ENOMEM; 135 } 136 137 /* fill the argument data */ 138 arg->private_data = p; 139 arg->addr.client = p->chset.client; 140 arg->addr.port = p->chset.port; 141 p->oss_arg = arg; 142 143 reset_port_mode(p, arg->seq_mode); 144 145 snd_emux_reset_port(p); 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(struct snd_emux_port *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(struct snd_seq_oss_arg *arg) 177 { 178 struct snd_emux *emu; 179 struct snd_emux_port *p; 180 181 if (snd_BUG_ON(!arg)) 182 return -ENXIO; 183 p = arg->private_data; 184 if (snd_BUG_ON(!p)) 185 return -ENXIO; 186 187 emu = p->emu; 188 if (snd_BUG_ON(!emu)) 189 return -ENXIO; 190 191 snd_emux_sounds_off_all(p); 192 snd_soundfont_close_check(emu->sflist, SF_CLIENT_NO(p->chset.port)); 193 snd_seq_event_port_detach(p->chset.client, p->chset.port); 194 snd_emux_dec_count(emu); 195 196 return 0; 197 } 198 199 200 /* 201 * load patch 202 */ 203 static int 204 snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, 205 const char __user *buf, int offs, int count) 206 { 207 struct snd_emux *emu; 208 struct snd_emux_port *p; 209 int rc; 210 211 if (snd_BUG_ON(!arg)) 212 return -ENXIO; 213 p = arg->private_data; 214 if (snd_BUG_ON(!p)) 215 return -ENXIO; 216 217 emu = p->emu; 218 if (snd_BUG_ON(!emu)) 219 return -ENXIO; 220 221 if (format == GUS_PATCH) 222 rc = snd_soundfont_load_guspatch(emu->sflist, buf, count, 223 SF_CLIENT_NO(p->chset.port)); 224 else if (format == SNDRV_OSS_SOUNDFONT_PATCH) { 225 struct soundfont_patch_info patch; 226 if (count < (int)sizeof(patch)) 227 rc = -EINVAL; 228 if (copy_from_user(&patch, buf, sizeof(patch))) 229 rc = -EFAULT; 230 if (patch.type >= SNDRV_SFNT_LOAD_INFO && 231 patch.type <= SNDRV_SFNT_PROBE_DATA) 232 rc = snd_soundfont_load(emu->sflist, buf, count, SF_CLIENT_NO(p->chset.port)); 233 else { 234 if (emu->ops.load_fx) 235 rc = emu->ops.load_fx(emu, patch.type, patch.optarg, buf, count); 236 else 237 rc = -EINVAL; 238 } 239 } else 240 rc = 0; 241 return rc; 242 } 243 244 245 /* 246 * ioctl 247 */ 248 static int 249 snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg) 250 { 251 struct snd_emux_port *p; 252 struct snd_emux *emu; 253 254 if (snd_BUG_ON(!arg)) 255 return -ENXIO; 256 p = arg->private_data; 257 if (snd_BUG_ON(!p)) 258 return -ENXIO; 259 260 emu = p->emu; 261 if (snd_BUG_ON(!emu)) 262 return -ENXIO; 263 264 switch (cmd) { 265 case SNDCTL_SEQ_RESETSAMPLES: 266 snd_soundfont_remove_samples(emu->sflist); 267 return 0; 268 269 case SNDCTL_SYNTH_MEMAVL: 270 if (emu->memhdr) 271 return snd_util_mem_avail(emu->memhdr); 272 return 0; 273 } 274 275 return 0; 276 } 277 278 279 /* 280 * reset device 281 */ 282 static int 283 snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg) 284 { 285 struct snd_emux_port *p; 286 287 if (snd_BUG_ON(!arg)) 288 return -ENXIO; 289 p = arg->private_data; 290 if (snd_BUG_ON(!p)) 291 return -ENXIO; 292 snd_emux_reset_port(p); 293 return 0; 294 } 295 296 297 /* 298 * receive raw events: only SEQ_PRIVATE is accepted. 299 */ 300 static int 301 snd_emux_event_oss_input(struct snd_seq_event *ev, int direct, void *private_data, 302 int atomic, int hop) 303 { 304 struct snd_emux *emu; 305 struct snd_emux_port *p; 306 unsigned char cmd, *data; 307 308 p = private_data; 309 if (snd_BUG_ON(!p)) 310 return -EINVAL; 311 emu = p->emu; 312 if (snd_BUG_ON(!emu)) 313 return -EINVAL; 314 if (ev->type != SNDRV_SEQ_EVENT_OSS) 315 return snd_emux_event_input(ev, direct, private_data, atomic, hop); 316 317 data = ev->data.raw8.d; 318 /* only SEQ_PRIVATE is accepted */ 319 if (data[0] != 0xfe) 320 return 0; 321 cmd = data[2] & _EMUX_OSS_MODE_VALUE_MASK; 322 if (data[2] & _EMUX_OSS_MODE_FLAG) 323 emuspec_control(emu, p, cmd, data, atomic, hop); 324 else 325 gusspec_control(emu, p, cmd, data, atomic, hop); 326 return 0; 327 } 328 329 330 /* 331 * OSS/AWE driver specific h/w controls 332 */ 333 static void 334 emuspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd, 335 unsigned char *event, int atomic, int hop) 336 { 337 int voice; 338 unsigned short p1; 339 short p2; 340 int i; 341 struct snd_midi_channel *chan; 342 343 voice = event[3]; 344 if (voice < 0 || voice >= port->chset.max_channels) 345 chan = NULL; 346 else 347 chan = &port->chset.channels[voice]; 348 349 p1 = *(unsigned short *) &event[4]; 350 p2 = *(short *) &event[6]; 351 352 switch (cmd) { 353 #if 0 /* don't do this atomically */ 354 case _EMUX_OSS_REMOVE_LAST_SAMPLES: 355 snd_soundfont_remove_unlocked(emu->sflist); 356 break; 357 #endif 358 case _EMUX_OSS_SEND_EFFECT: 359 if (chan) 360 snd_emux_send_effect_oss(port, chan, p1, p2); 361 break; 362 363 case _EMUX_OSS_TERMINATE_ALL: 364 snd_emux_terminate_all(emu); 365 break; 366 367 case _EMUX_OSS_TERMINATE_CHANNEL: 368 /*snd_emux_mute_channel(emu, chan);*/ 369 break; 370 case _EMUX_OSS_RESET_CHANNEL: 371 /*snd_emux_channel_init(chset, chan);*/ 372 break; 373 374 case _EMUX_OSS_RELEASE_ALL: 375 fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop); 376 break; 377 case _EMUX_OSS_NOTEOFF_ALL: 378 fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop); 379 break; 380 381 case _EMUX_OSS_INITIAL_VOLUME: 382 if (p2) { 383 port->volume_atten = (short)p1; 384 snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME); 385 } 386 break; 387 388 case _EMUX_OSS_CHN_PRESSURE: 389 if (chan) { 390 chan->midi_pressure = p1; 391 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2); 392 } 393 break; 394 395 case _EMUX_OSS_CHANNEL_MODE: 396 reset_port_mode(port, p1); 397 snd_emux_reset_port(port); 398 break; 399 400 case _EMUX_OSS_DRUM_CHANNELS: 401 port->drum_flags = *(unsigned int*)&event[4]; 402 for (i = 0; i < port->chset.max_channels; i++) { 403 chan = &port->chset.channels[i]; 404 chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0; 405 } 406 break; 407 408 case _EMUX_OSS_MISC_MODE: 409 if (p1 < EMUX_MD_END) 410 port->ctrls[p1] = p2; 411 break; 412 case _EMUX_OSS_DEBUG_MODE: 413 break; 414 415 default: 416 if (emu->ops.oss_ioctl) 417 emu->ops.oss_ioctl(emu, cmd, p1, p2); 418 break; 419 } 420 } 421 422 /* 423 * GUS specific h/w controls 424 */ 425 426 #include <linux/ultrasound.h> 427 428 static void 429 gusspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd, 430 unsigned char *event, int atomic, int hop) 431 { 432 int voice; 433 unsigned short p1; 434 short p2; 435 int plong; 436 struct snd_midi_channel *chan; 437 438 if (port->port_mode != SNDRV_EMUX_PORT_MODE_OSS_SYNTH) 439 return; 440 if (cmd == _GUS_NUMVOICES) 441 return; 442 voice = event[3]; 443 if (voice < 0 || voice >= port->chset.max_channels) 444 return; 445 446 chan = &port->chset.channels[voice]; 447 448 p1 = *(unsigned short *) &event[4]; 449 p2 = *(short *) &event[6]; 450 plong = *(int*) &event[4]; 451 452 switch (cmd) { 453 case _GUS_VOICESAMPLE: 454 chan->midi_program = p1; 455 return; 456 457 case _GUS_VOICEBALA: 458 /* 0 to 15 --> 0 to 127 */ 459 chan->control[MIDI_CTL_MSB_PAN] = (int)p1 << 3; 460 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN); 461 return; 462 463 case _GUS_VOICEVOL: 464 case _GUS_VOICEVOL2: 465 /* not supported yet */ 466 return; 467 468 case _GUS_RAMPRANGE: 469 case _GUS_RAMPRATE: 470 case _GUS_RAMPMODE: 471 case _GUS_RAMPON: 472 case _GUS_RAMPOFF: 473 /* volume ramping not supported */ 474 return; 475 476 case _GUS_VOLUME_SCALE: 477 return; 478 479 case _GUS_VOICE_POS: 480 #ifdef SNDRV_EMUX_USE_RAW_EFFECT 481 snd_emux_send_effect(port, chan, EMUX_FX_SAMPLE_START, 482 (short)(plong & 0x7fff), 483 EMUX_FX_FLAG_SET); 484 snd_emux_send_effect(port, chan, EMUX_FX_COARSE_SAMPLE_START, 485 (plong >> 15) & 0xffff, 486 EMUX_FX_FLAG_SET); 487 #endif 488 return; 489 } 490 } 491 492 493 /* 494 * send an event to midi emulation 495 */ 496 static void 497 fake_event(struct snd_emux *emu, struct snd_emux_port *port, int ch, int param, int val, int atomic, int hop) 498 { 499 struct snd_seq_event ev; 500 memset(&ev, 0, sizeof(ev)); 501 ev.type = SNDRV_SEQ_EVENT_CONTROLLER; 502 ev.data.control.channel = ch; 503 ev.data.control.param = param; 504 ev.data.control.value = val; 505 snd_emux_event_input(&ev, 0, port, atomic, hop); 506 } 507 508 #endif /* CONFIG_SND_SEQUENCER_OSS */ 509