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 */ 504