code.delx.au - pulseaudio/blob - src/modules/module-oss.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 /* General power management rules:
  24  *
  25  *   When SUSPENDED we close the audio device.
  26  *
  27  *   We make no difference between IDLE and RUNNING in our handling.
  28  *
  29  *   As long as we are in RUNNING/IDLE state we will *always* write data to
  30  *   the device. If none is avilable from the inputs, we write silence
  31  *   instead.
  32  *
  33  *   If power should be saved on IDLE module-suspend-on-idle should be used.
  34  *
  35  */
  36
  37 #ifdef HAVE_CONFIG_H
  38 #include <config.h>
  39 #endif
  40
  41 #ifdef HAVE_SYS_MMAN_H
  42 #include <sys/mman.h>
  43 #endif
  44
  45 #include <sys/soundcard.h>
  46 #include <sys/ioctl.h>
  47 #include <stdlib.h>
  48 #include <sys/stat.h>
  49 #include <stdio.h>
  50 #include <errno.h>
  51 #include <string.h>
  52 #include <fcntl.h>
  53 #include <unistd.h>
  54 #include <limits.h>
  55 #include <signal.h>
  56 #include <poll.h>
  57
  58 #include <pulse/xmalloc.h>
  59 #include <pulse/util.h>
  60
  61 #include <pulsecore/core-error.h>
  62 #include <pulsecore/thread.h>
  63 #include <pulsecore/sink.h>
  64 #include <pulsecore/source.h>
  65 #include <pulsecore/module.h>
  66 #include <pulsecore/sample-util.h>
  67 #include <pulsecore/core-util.h>
  68 #include <pulsecore/modargs.h>
  69 #include <pulsecore/log.h>
  70 #include <pulsecore/macro.h>
  71 #include <pulsecore/thread-mq.h>
  72 #include <pulsecore/rtpoll.h>
  73
  74 #include "oss-util.h"
  75 #include "module-oss-symdef.h"
  76
  77 PA_MODULE_AUTHOR("Lennart Poettering");
  78 PA_MODULE_DESCRIPTION("OSS Sink/Source");
  79 PA_MODULE_VERSION(PACKAGE_VERSION);
  80 PA_MODULE_LOAD_ONCE(FALSE);
  81 PA_MODULE_USAGE(
  82         "sink_name=<name for the sink> "
  83         "source_name=<name for the source> "
  84         "device=<OSS device> "
  85         "record=<enable source?> "
  86         "playback=<enable sink?> "
  87         "format=<sample format> "
  88         "channels=<number of channels> "
  89         "rate=<sample rate> "
  90         "fragments=<number of fragments> "
  91         "fragment_size=<fragment size> "
  92         "channel_map=<channel map> "
  93         "mmap=<enable memory mapping?>");
  94
  95 #define DEFAULT_DEVICE "/dev/dsp"
  96
  97 struct userdata {
  98     pa_core *core;
  99     pa_module *module;
 100     pa_sink *sink;
 101     pa_source *source;
 102
 103     pa_thread *thread;
 104     pa_thread_mq thread_mq;
 105     pa_rtpoll *rtpoll;
 106
 107     char *device_name;
 108
 109     pa_memchunk memchunk;
 110
 111     size_t frame_size;
 112     uint32_t in_fragment_size, out_fragment_size, in_nfrags, out_nfrags, in_hwbuf_size, out_hwbuf_size;
 113     pa_bool_t use_getospace, use_getispace;
 114     pa_bool_t use_getodelay;
 115
 116     pa_bool_t sink_suspended, source_suspended;
 117
 118     int fd;
 119     int mode;
 120
 121     int mixer_fd;
 122     int mixer_devmask;
 123
 124     int nfrags, frag_size;
 125
 126     pa_bool_t use_mmap;
 127     unsigned out_mmap_current, in_mmap_current;
 128     void *in_mmap, *out_mmap;
 129     pa_memblock **in_mmap_memblocks, **out_mmap_memblocks;
 130
 131     int in_mmap_saved_nfrags, out_mmap_saved_nfrags;
 132
 133     pa_rtpoll_item *rtpoll_item;
 134 };
 135
 136 static const char* const valid_modargs[] = {
 137     "sink_name",
 138     "source_name",
 139     "device",
 140     "record",
 141     "playback",
 142     "fragments",
 143     "fragment_size",
 144     "format",
 145     "rate",
 146     "channels",
 147     "channel_map",
 148     "mmap",
 149     NULL
 150 };
 151
 152 static void trigger(struct userdata *u, pa_bool_t quick) {
 153     int enable_bits = 0, zero = 0;
 154
 155     pa_assert(u);
 156
 157     if (u->fd < 0)
 158         return;
 159
 160      pa_log_debug("trigger");
 161
 162     if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state))
 163         enable_bits |= PCM_ENABLE_INPUT;
 164
 165     if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state))
 166         enable_bits |= PCM_ENABLE_OUTPUT;
 167
 168     pa_log_debug("trigger: %i", enable_bits);
 169
 170
 171     if (u->use_mmap) {
 172
 173         if (!quick)
 174             ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &zero);
 175
 176 #ifdef SNDCTL_DSP_HALT
 177         if (enable_bits == 0)
 178             if (ioctl(u->fd, SNDCTL_DSP_HALT, NULL) < 0)
 179                 pa_log_warn("SNDCTL_DSP_HALT: %s", pa_cstrerror(errno));
 180 #endif
 181
 182         if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &enable_bits) < 0)
 183             pa_log_warn("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno));
 184
 185         if (u->sink && !(enable_bits & PCM_ENABLE_OUTPUT)) {
 186             pa_log_debug("clearing playback buffer");
 187             pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &u->sink->sample_spec);
 188         }
 189
 190     } else {
 191
 192         if (enable_bits)
 193             if (ioctl(u->fd, SNDCTL_DSP_POST, NULL) < 0)
 194                 pa_log_warn("SNDCTL_DSP_POST: %s", pa_cstrerror(errno));
 195
 196         if (!quick) {
 197             /*
 198              * Some crappy drivers do not start the recording until we
 199              * read something.  Without this snippet, poll will never
 200              * register the fd as ready.
 201              */
 202
 203             if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
 204                 uint8_t *buf = pa_xnew(uint8_t, u->in_fragment_size);
 205                 pa_read(u->fd, buf, u->in_fragment_size, NULL);
 206                 pa_xfree(buf);
 207             }
 208         }
 209     }
 210 }
 211
 212 static void mmap_fill_memblocks(struct userdata *u, unsigned n) {
 213     pa_assert(u);
 214     pa_assert(u->out_mmap_memblocks);
 215
 216 /*     pa_log("Mmmap writing %u blocks", n); */
 217
 218     while (n > 0) {
 219         pa_memchunk chunk;
 220
 221         if (u->out_mmap_memblocks[u->out_mmap_current])
 222             pa_memblock_unref_fixed(u->out_mmap_memblocks[u->out_mmap_current]);
 223
 224         chunk.memblock = u->out_mmap_memblocks[u->out_mmap_current] =
 225             pa_memblock_new_fixed(
 226                     u->core->mempool,
 227                     (uint8_t*) u->out_mmap + u->out_fragment_size * u->out_mmap_current,
 228                     u->out_fragment_size,
 229                     1);
 230
 231         chunk.length = pa_memblock_get_length(chunk.memblock);
 232         chunk.index = 0;
 233
 234         pa_sink_render_into_full(u->sink, &chunk);
 235
 236         u->out_mmap_current++;
 237         while (u->out_mmap_current >= u->out_nfrags)
 238             u->out_mmap_current -= u->out_nfrags;
 239
 240         n--;
 241     }
 242 }
 243
 244 static int mmap_write(struct userdata *u) {
 245     struct count_info info;
 246
 247     pa_assert(u);
 248     pa_assert(u->sink);
 249
 250 /*     pa_log("Mmmap writing..."); */
 251
 252     if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
 253         pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
 254         return -1;
 255     }
 256
 257     info.blocks += u->out_mmap_saved_nfrags;
 258     u->out_mmap_saved_nfrags = 0;
 259
 260     if (info.blocks > 0)
 261         mmap_fill_memblocks(u, info.blocks);
 262
 263     return info.blocks;
 264 }
 265
 266 static void mmap_post_memblocks(struct userdata *u, unsigned n) {
 267     pa_assert(u);
 268     pa_assert(u->in_mmap_memblocks);
 269
 270 /*     pa_log("Mmmap reading %u blocks", n); */
 271
 272     while (n > 0) {
 273         pa_memchunk chunk;
 274
 275         if (!u->in_mmap_memblocks[u->in_mmap_current]) {
 276
 277             chunk.memblock = u->in_mmap_memblocks[u->in_mmap_current] =
 278                 pa_memblock_new_fixed(
 279                         u->core->mempool,
 280                         (uint8_t*) u->in_mmap + u->in_fragment_size*u->in_mmap_current,
 281                         u->in_fragment_size,
 282                         1);
 283
 284             chunk.length = pa_memblock_get_length(chunk.memblock);
 285             chunk.index = 0;
 286
 287             pa_source_post(u->source, &chunk);
 288         }
 289
 290         u->in_mmap_current++;
 291         while (u->in_mmap_current >= u->in_nfrags)
 292             u->in_mmap_current -= u->in_nfrags;
 293
 294         n--;
 295     }
 296 }
 297
 298 static void mmap_clear_memblocks(struct userdata*u, unsigned n) {
 299     unsigned i = u->in_mmap_current;
 300
 301     pa_assert(u);
 302     pa_assert(u->in_mmap_memblocks);
 303
 304     if (n > u->in_nfrags)
 305         n = u->in_nfrags;
 306
 307     while (n > 0) {
 308         if (u->in_mmap_memblocks[i]) {
 309             pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
 310             u->in_mmap_memblocks[i] = NULL;
 311         }
 312
 313         i++;
 314         while (i >= u->in_nfrags)
 315             i -= u->in_nfrags;
 316
 317         n--;
 318     }
 319 }
 320
 321 static int mmap_read(struct userdata *u) {
 322     struct count_info info;
 323     pa_assert(u);
 324     pa_assert(u->source);
 325
 326 /*     pa_log("Mmmap reading..."); */
 327
 328     if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
 329         pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
 330         return -1;
 331     }
 332
 333 /*     pa_log("... %i", info.blocks); */
 334
 335     info.blocks += u->in_mmap_saved_nfrags;
 336     u->in_mmap_saved_nfrags = 0;
 337
 338     if (info.blocks > 0) {
 339         mmap_post_memblocks(u, info.blocks);
 340         mmap_clear_memblocks(u, u->in_nfrags/2);
 341     }
 342
 343     return info.blocks;
 344 }
 345
 346 static pa_usec_t mmap_sink_get_latency(struct userdata *u) {
 347     struct count_info info;
 348     size_t bpos, n;
 349
 350     pa_assert(u);
 351
 352     if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
 353         pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
 354         return 0;
 355     }
 356
 357     u->out_mmap_saved_nfrags += info.blocks;
 358
 359     bpos = ((u->out_mmap_current + u->out_mmap_saved_nfrags) * u->out_fragment_size) % u->out_hwbuf_size;
 360
 361     if (bpos <= (size_t) info.ptr)
 362         n = u->out_hwbuf_size - (info.ptr - bpos);
 363     else
 364         n = bpos - info.ptr;
 365
 366 /*     pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->out_fragment_size, u->out_fragments); */
 367
 368     return pa_bytes_to_usec(n, &u->sink->sample_spec);
 369 }
 370
 371 static pa_usec_t mmap_source_get_latency(struct userdata *u) {
 372     struct count_info info;
 373     size_t bpos, n;
 374
 375     pa_assert(u);
 376
 377     if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
 378         pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
 379         return 0;
 380     }
 381
 382     u->in_mmap_saved_nfrags += info.blocks;
 383     bpos = ((u->in_mmap_current + u->in_mmap_saved_nfrags) * u->in_fragment_size) % u->in_hwbuf_size;
 384
 385     if (bpos <= (size_t) info.ptr)
 386         n = info.ptr - bpos;
 387     else
 388         n = u->in_hwbuf_size - bpos + info.ptr;
 389
 390 /*     pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->in_fragment_size, u->in_fragments);  */
 391
 392     return pa_bytes_to_usec(n, &u->source->sample_spec);
 393 }
 394
 395 static pa_usec_t io_sink_get_latency(struct userdata *u) {
 396     pa_usec_t r = 0;
 397
 398     pa_assert(u);
 399
 400     if (u->use_getodelay) {
 401         int arg;
 402
 403         if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) {
 404             pa_log_info("Device doesn't support SNDCTL_DSP_GETODELAY: %s", pa_cstrerror(errno));
 405             u->use_getodelay = 0;
 406         } else
 407             r = pa_bytes_to_usec(arg, &u->sink->sample_spec);
 408
 409     }
 410
 411     if (!u->use_getodelay && u->use_getospace) {
 412         struct audio_buf_info info;
 413
 414         if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
 415             pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
 416             u->use_getospace = 0;
 417         } else
 418             r = pa_bytes_to_usec(info.bytes, &u->sink->sample_spec);
 419     }
 420
 421     if (u->memchunk.memblock)
 422         r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
 423
 424     return r;
 425 }
 426
 427
 428 static pa_usec_t io_source_get_latency(struct userdata *u) {
 429     pa_usec_t r = 0;
 430
 431     pa_assert(u);
 432
 433     if (u->use_getispace) {
 434         struct audio_buf_info info;
 435
 436         if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
 437             pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
 438             u->use_getispace = 0;
 439         } else
 440             r = pa_bytes_to_usec(info.bytes, &u->source->sample_spec);
 441     }
 442
 443     return r;
 444 }
 445
 446 static void build_pollfd(struct userdata *u) {
 447     struct pollfd *pollfd;
 448
 449     pa_assert(u);
 450     pa_assert(u->fd >= 0);
 451
 452     if (u->rtpoll_item)
 453         pa_rtpoll_item_free(u->rtpoll_item);
 454
 455     u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
 456     pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
 457     pollfd->fd = u->fd;
 458     pollfd->events = 0;
 459     pollfd->revents = 0;
 460 }
 461
 462 static int suspend(struct userdata *u) {
 463     pa_assert(u);
 464     pa_assert(u->fd >= 0);
 465
 466     pa_log_info("Suspending...");
 467
 468     if (u->out_mmap_memblocks) {
 469         unsigned i;
 470         for (i = 0; i < u->out_nfrags; i++)
 471             if (u->out_mmap_memblocks[i]) {
 472                 pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
 473                 u->out_mmap_memblocks[i] = NULL;
 474             }
 475     }
 476
 477     if (u->in_mmap_memblocks) {
 478         unsigned i;
 479         for (i = 0; i < u->in_nfrags; i++)
 480             if (u->in_mmap_memblocks[i]) {
 481                 pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
 482                 u->in_mmap_memblocks[i] = NULL;
 483             }
 484     }
 485
 486     if (u->in_mmap && u->in_mmap != MAP_FAILED) {
 487         munmap(u->in_mmap, u->in_hwbuf_size);
 488         u->in_mmap = NULL;
 489     }
 490
 491     if (u->out_mmap && u->out_mmap != MAP_FAILED) {
 492         munmap(u->out_mmap, u->out_hwbuf_size);
 493         u->out_mmap = NULL;
 494     }
 495
 496     /* Let's suspend */
 497     ioctl(u->fd, SNDCTL_DSP_SYNC, NULL);
 498     pa_close(u->fd);
 499     u->fd = -1;
 500
 501     if (u->rtpoll_item) {
 502         pa_rtpoll_item_free(u->rtpoll_item);
 503         u->rtpoll_item = NULL;
 504     }
 505
 506     pa_log_info("Device suspended...");
 507
 508     return 0;
 509 }
 510
 511 static int unsuspend(struct userdata *u) {
 512     int m;
 513     pa_sample_spec ss, *ss_original;
 514     int frag_size, in_frag_size, out_frag_size;
 515     int in_nfrags, out_nfrags;
 516     struct audio_buf_info info;
 517
 518     pa_assert(u);
 519     pa_assert(u->fd < 0);
 520
 521     m = u->mode;
 522
 523     pa_log_info("Trying resume...");
 524
 525     if ((u->fd = pa_oss_open(u->device_name, &m, NULL)) < 0) {
 526         pa_log_warn("Resume failed, device busy (%s)", pa_cstrerror(errno));
 527         return -1;
 528
 529     if (m != u->mode)
 530         pa_log_warn("Resume failed, couldn't open device with original access mode.");
 531         goto fail;
 532     }
 533
 534     if (u->nfrags >= 2 && u->frag_size >= 1)
 535         if (pa_oss_set_fragments(u->fd, u->nfrags, u->frag_size) < 0) {
 536             pa_log_warn("Resume failed, couldn't set original fragment settings.");
 537             goto fail;
 538         }
 539
 540     ss = *(ss_original = u->sink ? &u->sink->sample_spec : &u->source->sample_spec);
 541     if (pa_oss_auto_format(u->fd, &ss) < 0 || !pa_sample_spec_equal(&ss, ss_original)) {
 542         pa_log_warn("Resume failed, couldn't set original sample format settings.");
 543         goto fail;
 544     }
 545
 546     if (ioctl(u->fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
 547         pa_log_warn("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
 548         goto fail;
 549     }
 550
 551     in_frag_size = out_frag_size = frag_size;
 552     in_nfrags = out_nfrags = u->nfrags;
 553
 554     if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
 555         in_frag_size = info.fragsize;
 556         in_nfrags = info.fragstotal;
 557     }
 558
 559     if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
 560         out_frag_size = info.fragsize;
 561         out_nfrags = info.fragstotal;
 562     }
 563
 564     if ((u->source && (in_frag_size != (int) u->in_fragment_size || in_nfrags != (int) u->in_nfrags)) ||
 565         (u->sink && (out_frag_size != (int) u->out_fragment_size || out_nfrags != (int) u->out_nfrags))) {
 566         pa_log_warn("Resume failed, input fragment settings don't match.");
 567         goto fail;
 568     }
 569
 570     if (u->use_mmap) {
 571         if (u->source) {
 572             if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
 573                 pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
 574                 goto fail;
 575             }
 576         }
 577
 578         if (u->sink) {
 579             if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
 580                 pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
 581                 if (u->in_mmap && u->in_mmap != MAP_FAILED) {
 582                     munmap(u->in_mmap, u->in_hwbuf_size);
 583                     u->in_mmap = NULL;
 584                 }
 585
 586                 goto fail;
 587             }
 588
 589             pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
 590         }
 591     }
 592
 593     u->out_mmap_current = u->in_mmap_current = 0;
 594     u->out_mmap_saved_nfrags = u->in_mmap_saved_nfrags = 0;
 595
 596     pa_assert(!u->rtpoll_item);
 597
 598     build_pollfd(u);
 599
 600     if (u->sink)
 601         pa_sink_get_volume(u->sink);
 602     if (u->source)
 603         pa_source_get_volume(u->source);
 604
 605     pa_log_info("Resumed successfully...");
 606
 607     return 0;
 608
 609 fail:
 610     pa_close(u->fd);
 611     u->fd = -1;
 612     return -1;
 613 }
 614
 615 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 616     struct userdata *u = PA_SINK(o)->userdata;
 617     int ret;
 618     pa_bool_t do_trigger = FALSE, quick = TRUE;
 619
 620     switch (code) {
 621
 622         case PA_SINK_MESSAGE_GET_LATENCY: {
 623             pa_usec_t r = 0;
 624
 625             if (u->fd >= 0) {
 626                 if (u->use_mmap)
 627                     r = mmap_sink_get_latency(u);
 628                 else
 629                     r = io_sink_get_latency(u);
 630             }
 631
 632             *((pa_usec_t*) data) = r;
 633
 634             return 0;
 635         }
 636
 637         case PA_SINK_MESSAGE_SET_STATE:
 638
 639             switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
 640
 641                 case PA_SINK_SUSPENDED:
 642                     pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
 643
 644                     if (!u->source || u->source_suspended) {
 645                         if (suspend(u) < 0)
 646                             return -1;
 647                     }
 648
 649                     do_trigger = TRUE;
 650
 651                     u->sink_suspended = TRUE;
 652                     break;
 653
 654                 case PA_SINK_IDLE:
 655                 case PA_SINK_RUNNING:
 656
 657                     if (u->sink->thread_info.state == PA_SINK_INIT) {
 658                         do_trigger = TRUE;
 659                         quick = u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state);
 660                     }
 661
 662                     if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
 663
 664                         if (!u->source || u->source_suspended) {
 665                             if (unsuspend(u) < 0)
 666                                 return -1;
 667                             quick = FALSE;
 668                         }
 669
 670                         do_trigger = TRUE;
 671
 672                         u->out_mmap_current = 0;
 673                         u->out_mmap_saved_nfrags = 0;
 674
 675                         u->sink_suspended = FALSE;
 676                     }
 677
 678                     break;
 679
 680                 case PA_SINK_UNLINKED:
 681                 case PA_SINK_INIT:
 682                     ;
 683             }
 684
 685             break;
 686
 687     }
 688
 689     ret = pa_sink_process_msg(o, code, data, offset, chunk);
 690
 691     if (do_trigger)
 692         trigger(u, quick);
 693
 694     return ret;
 695 }
 696
 697 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 698     struct userdata *u = PA_SOURCE(o)->userdata;
 699     int ret;
 700     int do_trigger = FALSE, quick = TRUE;
 701
 702     switch (code) {
 703
 704         case PA_SOURCE_MESSAGE_GET_LATENCY: {
 705             pa_usec_t r = 0;
 706
 707             if (u->fd >= 0) {
 708                 if (u->use_mmap)
 709                     r = mmap_source_get_latency(u);
 710                 else
 711                     r = io_source_get_latency(u);
 712             }
 713
 714             *((pa_usec_t*) data) = r;
 715             return 0;
 716         }
 717
 718         case PA_SOURCE_MESSAGE_SET_STATE:
 719
 720             switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
 721                 case PA_SOURCE_SUSPENDED:
 722                     pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
 723
 724                     if (!u->sink || u->sink_suspended) {
 725                         if (suspend(u) < 0)
 726                             return -1;
 727                     }
 728
 729                     do_trigger = TRUE;
 730
 731                     u->source_suspended = TRUE;
 732                     break;
 733
 734                 case PA_SOURCE_IDLE:
 735                 case PA_SOURCE_RUNNING:
 736
 737                     if (u->source->thread_info.state == PA_SOURCE_INIT) {
 738                         do_trigger = TRUE;
 739                         quick = u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state);
 740                     }
 741
 742                     if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
 743
 744                         if (!u->sink || u->sink_suspended) {
 745                             if (unsuspend(u) < 0)
 746                                 return -1;
 747                             quick = FALSE;
 748                         }
 749
 750                         do_trigger = TRUE;
 751
 752                         u->in_mmap_current = 0;
 753                         u->in_mmap_saved_nfrags = 0;
 754
 755                         u->source_suspended = FALSE;
 756                     }
 757                     break;
 758
 759                 case PA_SOURCE_UNLINKED:
 760                 case PA_SOURCE_INIT:
 761                     ;
 762
 763             }
 764             break;
 765
 766     }
 767
 768     ret = pa_source_process_msg(o, code, data, offset, chunk);
 769
 770     if (do_trigger)
 771         trigger(u, quick);
 772
 773     return ret;
 774 }
 775
 776 static int sink_get_volume(pa_sink *s) {
 777     struct userdata *u;
 778     int r;
 779
 780     pa_assert_se(u = s->userdata);
 781
 782     pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
 783
 784     if (u->mixer_devmask & SOUND_MASK_VOLUME)
 785         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_VOLUME, &s->sample_spec, &s->volume)) >= 0)
 786             return r;
 787
 788     if (u->mixer_devmask & SOUND_MASK_PCM)
 789         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_PCM, &s->sample_spec, &s->volume)) >= 0)
 790             return r;
 791
 792     pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
 793     return -1;
 794 }
 795
 796 static int sink_set_volume(pa_sink *s) {
 797     struct userdata *u;
 798     int r;
 799
 800     pa_assert_se(u = s->userdata);
 801
 802     pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
 803
 804     if (u->mixer_devmask & SOUND_MASK_VOLUME)
 805         if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_VOLUME, &s->sample_spec, &s->volume)) >= 0)
 806             return r;
 807
 808     if (u->mixer_devmask & SOUND_MASK_PCM)
 809         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_PCM, &s->sample_spec, &s->volume)) >= 0)
 810             return r;
 811
 812     pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
 813     return -1;
 814 }
 815
 816 static int source_get_volume(pa_source *s) {
 817     struct userdata *u;
 818     int r;
 819
 820     pa_assert_se(u = s->userdata);
 821
 822     pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
 823
 824     if (u->mixer_devmask & SOUND_MASK_IGAIN)
 825         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_IGAIN, &s->sample_spec, &s->volume)) >= 0)
 826             return r;
 827
 828     if (u->mixer_devmask & SOUND_MASK_RECLEV)
 829         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_RECLEV, &s->sample_spec, &s->volume)) >= 0)
 830             return r;
 831
 832     pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
 833     return -1;
 834 }
 835
 836 static int source_set_volume(pa_source *s) {
 837     struct userdata *u;
 838     int r;
 839
 840     pa_assert_se(u = s->userdata);
 841
 842     pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
 843
 844     if (u->mixer_devmask & SOUND_MASK_IGAIN)
 845         if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_IGAIN, &s->sample_spec, &s->volume)) >= 0)
 846             return r;
 847
 848     if (u->mixer_devmask & SOUND_MASK_RECLEV)
 849         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_RECLEV, &s->sample_spec, &s->volume)) >= 0)
 850             return r;
 851
 852     pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
 853     return -1;
 854 }
 855
 856 static void thread_func(void *userdata) {
 857     struct userdata *u = userdata;
 858     int write_type = 0, read_type = 0;
 859     unsigned short revents = 0;
 860
 861     pa_assert(u);
 862
 863     pa_log_debug("Thread starting up");
 864
 865     if (u->core->realtime_scheduling)
 866         pa_make_realtime(u->core->realtime_priority);
 867
 868     pa_thread_mq_install(&u->thread_mq);
 869     pa_rtpoll_install(u->rtpoll);
 870
 871     for (;;) {
 872         int ret;
 873
 874 /*        pa_log("loop");    */
 875
 876         /* Render some data and write it to the dsp */
 877
 878         if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((revents & POLLOUT) || u->use_mmap || u->use_getospace)) {
 879
 880             if (u->use_mmap) {
 881
 882                 if ((ret = mmap_write(u)) < 0)
 883                     goto fail;
 884
 885                 revents &= ~POLLOUT;
 886
 887                 if (ret > 0)
 888                     continue;
 889
 890             } else {
 891                 ssize_t l;
 892                 pa_bool_t loop = FALSE, work_done = FALSE;
 893
 894                 l = u->out_fragment_size;
 895
 896                 if (u->use_getospace) {
 897                     audio_buf_info info;
 898
 899                     if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
 900                         pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
 901                         u->use_getospace = FALSE;
 902                     } else {
 903                         l = info.bytes;
 904
 905                         /* We loop only if GETOSPACE worked and we
 906                          * actually *know* that we can write more than
 907                          * one fragment at a time */
 908                         loop = TRUE;
 909                     }
 910                 }
 911
 912                 /* Round down to multiples of the fragment size,
 913                  * because OSS needs that (at least some versions
 914                  * do) */
 915                 l = (l/u->out_fragment_size) * u->out_fragment_size;
 916
 917                 /* Hmm, so poll() signalled us that we can read
 918                  * something, but GETOSPACE told us there was nothing?
 919                  * Hmm, make the best of it, try to read some data, to
 920                  * avoid spinning forever. */
 921                 if (l <= 0 && (revents & POLLOUT)) {
 922                     l = u->out_fragment_size;
 923                     loop = FALSE;
 924                 }
 925
 926                 while (l > 0) {
 927                     void *p;
 928                     ssize_t t;
 929
 930                     if (u->memchunk.length <= 0)
 931                         pa_sink_render(u->sink, l, &u->memchunk);
 932
 933                     pa_assert(u->memchunk.length > 0);
 934
 935                     p = pa_memblock_acquire(u->memchunk.memblock);
 936                     t = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
 937                     pa_memblock_release(u->memchunk.memblock);
 938
 939 /*                     pa_log("wrote %i bytes of %u", t, l); */
 940
 941                     pa_assert(t != 0);
 942
 943                     if (t < 0) {
 944
 945                         if (errno == EINTR)
 946                             continue;
 947
 948                         else if (errno == EAGAIN) {
 949                             pa_log_debug("EAGAIN");
 950
 951                             revents &= ~POLLOUT;
 952                             break;
 953
 954                         } else {
 955                             pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
 956                             goto fail;
 957                         }
 958
 959                     } else {
 960
 961                         u->memchunk.index += t;
 962                         u->memchunk.length -= t;
 963
 964                         if (u->memchunk.length <= 0) {
 965                             pa_memblock_unref(u->memchunk.memblock);
 966                             pa_memchunk_reset(&u->memchunk);
 967                         }
 968
 969                         l -= t;
 970
 971                         revents &= ~POLLOUT;
 972                         work_done = TRUE;
 973                     }
 974
 975                     if (!loop)
 976                         break;
 977                 }
 978
 979                 if (work_done)
 980                     continue;
 981             }
 982         }
 983
 984         /* Try to read some data and pass it on to the source driver. */
 985
 986         if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) && ((revents & POLLIN) || u->use_mmap || u->use_getispace)) {
 987
 988             if (u->use_mmap) {
 989
 990                 if ((ret = mmap_read(u)) < 0)
 991                     goto fail;
 992
 993                 revents &= ~POLLIN;
 994
 995                 if (ret > 0)
 996                     continue;
 997
 998             } else {
 999
1000                 void *p;
1001                 ssize_t l;
1002                 pa_memchunk memchunk;
1003                 pa_bool_t loop = FALSE, work_done = FALSE;
1004
1005                 l = u->in_fragment_size;
1006
1007                 if (u->use_getispace) {
1008                     audio_buf_info info;
1009
1010                     if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
1011                         pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
1012                         u->use_getispace = FALSE;
1013                     } else {
1014                         l = info.bytes;
1015                         loop = TRUE;
1016                     }
1017                 }
1018
1019                 l = (l/u->in_fragment_size) * u->in_fragment_size;
1020
1021                 if (l <= 0 && (revents & POLLIN)) {
1022                     l = u->in_fragment_size;
1023                     loop = FALSE;
1024                 }
1025
1026                 while (l > 0) {
1027                     ssize_t t, k;
1028
1029                     pa_assert(l > 0);
1030
1031                     memchunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
1032
1033                     k = pa_memblock_get_length(memchunk.memblock);
1034
1035                     if (k > l)
1036                         k = l;
1037
1038                     k = (k/u->frame_size)*u->frame_size;
1039
1040                     p = pa_memblock_acquire(memchunk.memblock);
1041                     t = pa_read(u->fd, p, k, &read_type);
1042                     pa_memblock_release(memchunk.memblock);
1043
1044                     pa_assert(t != 0); /* EOF cannot happen */
1045
1046 /*                     pa_log("read %i bytes of %u", t, l); */
1047
1048                     if (t < 0) {
1049                         pa_memblock_unref(memchunk.memblock);
1050
1051                         if (errno == EINTR)
1052                             continue;
1053
1054                         else if (errno == EAGAIN) {
1055                             pa_log_debug("EAGAIN");
1056
1057                             revents &= ~POLLIN;
1058                             break;
1059
1060                         } else {
1061                             pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
1062                             goto fail;
1063                         }
1064
1065                     } else {
1066                         memchunk.index = 0;
1067                         memchunk.length = t;
1068
1069                         pa_source_post(u->source, &memchunk);
1070                         pa_memblock_unref(memchunk.memblock);
1071
1072                         l -= t;
1073
1074                         revents &= ~POLLIN;
1075                         work_done = TRUE;
1076                     }
1077
1078                     if (!loop)
1079                         break;
1080                 }
1081
1082                 if (work_done)
1083                     continue;
1084             }
1085         }
1086
1087 /*         pa_log("loop2 revents=%i", revents); */
1088
1089         if (u->rtpoll_item) {
1090             struct pollfd *pollfd;
1091
1092             pa_assert(u->fd >= 0);
1093
1094             pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1095             pollfd->events =
1096                 ((u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 0) |
1097                 ((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) ? POLLOUT : 0);
1098         }
1099
1100         /* Hmm, nothing to do. Let's sleep */
1101         if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1102             goto fail;
1103
1104         if (ret == 0)
1105             goto finish;
1106
1107         if (u->rtpoll_item) {
1108             struct pollfd *pollfd;
1109
1110             pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1111
1112             if (pollfd->revents & ~(POLLOUT|POLLIN)) {
1113                 pa_log("DSP shutdown.");
1114                 goto fail;
1115             }
1116
1117             revents = pollfd->revents;
1118         } else
1119             revents = 0;
1120     }
1121
1122 fail:
1123     /* If this was no regular exit from the loop we have to continue
1124      * processing messages until we received PA_MESSAGE_SHUTDOWN */
1125     pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1126     pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1127
1128 finish:
1129     pa_log_debug("Thread shutting down");
1130 }
1131
1132 int pa__init(pa_module*m) {
1133
1134     struct audio_buf_info info;
1135     struct userdata *u = NULL;
1136     const char *dev;
1137     int fd = -1;
1138     int nfrags, frag_size;
1139     int mode, caps;
1140     pa_bool_t record = TRUE, playback = TRUE, use_mmap = TRUE;
1141     pa_sample_spec ss;
1142     pa_channel_map map;
1143     pa_modargs *ma = NULL;
1144     char hwdesc[64];
1145     const char *name;
1146     pa_bool_t namereg_fail;
1147     pa_sink_new_data sink_new_data;
1148     pa_source_new_data source_new_data;
1149
1150     pa_assert(m);
1151
1152     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
1153         pa_log("Failed to parse module arguments.");
1154         goto fail;
1155     }
1156
1157     if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
1158         pa_log("record= and playback= expect boolean argument.");
1159         goto fail;
1160     }
1161
1162     if (!playback && !record) {
1163         pa_log("Neither playback nor record enabled for device.");
1164         goto fail;
1165     }
1166
1167     mode = (playback && record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
1168
1169     ss = m->core->default_sample_spec;
1170     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_OSS) < 0) {
1171         pa_log("Failed to parse sample specification or channel map");
1172         goto fail;
1173     }
1174
1175     nfrags = m->core->default_n_fragments;
1176     frag_size = pa_usec_to_bytes(m->core->default_fragment_size_msec*1000, &ss);
1177     if (frag_size <= 0)
1178         frag_size = pa_frame_size(&ss);
1179
1180     if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
1181         pa_log("Failed to parse fragments arguments");
1182         goto fail;
1183     }
1184
1185     if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
1186         pa_log("Failed to parse mmap argument.");
1187         goto fail;
1188     }
1189
1190     if ((fd = pa_oss_open(dev = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, &caps)) < 0)
1191         goto fail;
1192
1193     if (use_mmap && (!(caps & DSP_CAP_MMAP) || !(caps & DSP_CAP_TRIGGER))) {
1194         pa_log_info("OSS device not mmap capable, falling back to UNIX read/write mode.");
1195         use_mmap = 0;
1196     }
1197
1198     if (use_mmap && mode == O_WRONLY) {
1199         pa_log_info("Device opened for playback only, cannot do memory mapping, falling back to UNIX write() mode.");
1200         use_mmap = 0;
1201     }
1202
1203     if (pa_oss_get_hw_description(dev, hwdesc, sizeof(hwdesc)) >= 0)
1204         pa_log_info("Hardware name is '%s'.", hwdesc);
1205     else
1206         hwdesc[0] = 0;
1207
1208     pa_log_info("Device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
1209
1210     if (nfrags >= 2 && frag_size >= 1)
1211         if (pa_oss_set_fragments(fd, nfrags, frag_size) < 0)
1212             goto fail;
1213
1214     if (pa_oss_auto_format(fd, &ss) < 0)
1215         goto fail;
1216
1217     if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
1218         pa_log("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
1219         goto fail;
1220     }
1221     pa_assert(frag_size > 0);
1222
1223     u = pa_xnew0(struct userdata, 1);
1224     u->core = m->core;
1225     u->module = m;
1226     m->userdata = u;
1227     u->fd = fd;
1228     u->mixer_fd = -1;
1229     u->use_getospace = u->use_getispace = TRUE;
1230     u->use_getodelay = TRUE;
1231     u->mode = mode;
1232     u->frame_size = pa_frame_size(&ss);
1233     u->device_name = pa_xstrdup(dev);
1234     u->in_nfrags = u->out_nfrags = u->nfrags = nfrags;
1235     u->out_fragment_size = u->in_fragment_size = u->frag_size = frag_size;
1236     u->use_mmap = use_mmap;
1237     u->rtpoll = pa_rtpoll_new();
1238     pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1239     u->rtpoll_item = NULL;
1240     build_pollfd(u);
1241
1242     if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
1243         pa_log_info("Input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
1244         u->in_fragment_size = info.fragsize;
1245         u->in_nfrags = info.fragstotal;
1246         u->use_getispace = TRUE;
1247     }
1248
1249     if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
1250         pa_log_info("Output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
1251         u->out_fragment_size = info.fragsize;
1252         u->out_nfrags = info.fragstotal;
1253         u->use_getospace = TRUE;
1254     }
1255
1256     u->in_hwbuf_size = u->in_nfrags * u->in_fragment_size;
1257     u->out_hwbuf_size = u->out_nfrags * u->out_fragment_size;
1258
1259     if (mode != O_WRONLY) {
1260         char *name_buf = NULL;
1261
1262         if (use_mmap) {
1263             if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED) {
1264                 pa_log_warn("mmap(PROT_READ) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
1265                 use_mmap = u->use_mmap = FALSE;
1266                 u->in_mmap = NULL;
1267             } else
1268                 pa_log_debug("Successfully mmap()ed input buffer.");
1269         }
1270
1271         if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
1272             namereg_fail = TRUE;
1273         else {
1274             name = name_buf = pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(dev));
1275             namereg_fail = FALSE;
1276         }
1277
1278         pa_source_new_data_init(&source_new_data);
1279         source_new_data.driver = __FILE__;
1280         source_new_data.module = m;
1281         pa_source_new_data_set_name(&source_new_data, name);
1282         source_new_data.namereg_fail = namereg_fail;
1283         pa_source_new_data_set_sample_spec(&source_new_data, &ss);
1284         pa_source_new_data_set_channel_map(&source_new_data, &map);
1285         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
1286         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_API, "oss");
1287         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
1288         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
1289         pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->in_hwbuf_size));
1290         pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->in_fragment_size));
1291
1292         u->source = pa_source_new(m->core, &source_new_data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
1293         pa_source_new_data_done(&source_new_data);
1294         pa_xfree(name_buf);
1295
1296         if (!u->source) {
1297             pa_log("Failed to create source object");
1298             goto fail;
1299         }
1300
1301         u->source->parent.process_msg = source_process_msg;
1302         u->source->userdata = u;
1303
1304         pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1305         pa_source_set_rtpoll(u->source, u->rtpoll);
1306         u->source->refresh_volume = TRUE;
1307
1308         if (use_mmap)
1309             u->in_mmap_memblocks = pa_xnew0(pa_memblock*, u->in_nfrags);
1310     }
1311
1312     if (mode != O_RDONLY) {
1313         char *name_buf = NULL;
1314
1315         if (use_mmap) {
1316             if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) {
1317                 if (mode == O_RDWR) {
1318                     pa_log_debug("mmap() failed for input. Changing to O_WRONLY mode.");
1319                     mode = O_WRONLY;
1320                     goto go_on;
1321                 } else {
1322                     pa_log_warn("mmap(PROT_WRITE) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
1323                     u->use_mmap = use_mmap = FALSE;
1324                     u->out_mmap = NULL;
1325                 }
1326             } else {
1327                 pa_log_debug("Successfully mmap()ed output buffer.");
1328                 pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
1329             }
1330         }
1331
1332         if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
1333             namereg_fail = TRUE;
1334         else {
1335             name = name_buf = pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(dev));
1336             namereg_fail = FALSE;
1337         }
1338
1339         pa_sink_new_data_init(&sink_new_data);
1340         sink_new_data.driver = __FILE__;
1341         sink_new_data.module = m;
1342         pa_sink_new_data_set_name(&sink_new_data, name);
1343         sink_new_data.namereg_fail = namereg_fail;
1344         pa_sink_new_data_set_sample_spec(&sink_new_data, &ss);
1345         pa_sink_new_data_set_channel_map(&sink_new_data, &map);
1346         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
1347         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_API, "oss");
1348         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
1349         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
1350         pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->out_hwbuf_size));
1351         pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->out_fragment_size));
1352
1353         u->sink = pa_sink_new(m->core, &sink_new_data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
1354         pa_sink_new_data_done(&sink_new_data);
1355         pa_xfree(name_buf);
1356
1357         if (!u->sink) {
1358             pa_log("Failed to create sink object");
1359             goto fail;
1360         }
1361
1362         u->sink->parent.process_msg = sink_process_msg;
1363         u->sink->userdata = u;
1364
1365         pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1366         pa_sink_set_rtpoll(u->sink, u->rtpoll);
1367         u->sink->refresh_volume = TRUE;
1368
1369         u->sink->thread_info.max_request = u->out_hwbuf_size;
1370
1371         if (use_mmap)
1372             u->out_mmap_memblocks = pa_xnew0(pa_memblock*, u->out_nfrags);
1373     }
1374
1375     if ((u->mixer_fd = pa_oss_open_mixer_for_device(u->device_name)) >= 0) {
1376         pa_bool_t do_close = TRUE;
1377         u->mixer_devmask = 0;
1378
1379         if (ioctl(fd, SOUND_MIXER_READ_DEVMASK, &u->mixer_devmask) < 0)
1380             pa_log_warn("SOUND_MIXER_READ_DEVMASK failed: %s", pa_cstrerror(errno));
1381
1382         else {
1383             if (u->sink && (u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM))) {
1384                 pa_log_debug("Found hardware mixer track for playback.");
1385                 u->sink->flags |= PA_SINK_HW_VOLUME_CTRL;
1386                 u->sink->get_volume = sink_get_volume;
1387                 u->sink->set_volume = sink_set_volume;
1388                 do_close = FALSE;
1389             }
1390
1391             if (u->source && (u->mixer_devmask & (SOUND_MASK_RECLEV|SOUND_MASK_IGAIN))) {
1392                 pa_log_debug("Found hardware mixer track for recording.");
1393                 u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL;
1394                 u->source->get_volume = source_get_volume;
1395                 u->source->set_volume = source_set_volume;
1396                 do_close = FALSE;
1397             }
1398         }
1399
1400         if (do_close) {
1401             pa_close(u->mixer_fd);
1402             u->mixer_fd = -1;
1403         }
1404     }
1405
1406 go_on:
1407
1408     pa_assert(u->source || u->sink);
1409
1410     pa_memchunk_reset(&u->memchunk);
1411
1412     if (!(u->thread = pa_thread_new(thread_func, u))) {
1413         pa_log("Failed to create thread.");
1414         goto fail;
1415     }
1416
1417     /* Read mixer settings */
1418     if (u->sink) {
1419         if (sink_new_data.volume_is_set) {
1420             if (u->sink->set_volume)
1421                 u->sink->set_volume(u->sink);
1422         } else {
1423             if (u->sink->get_volume)
1424                 u->sink->get_volume(u->sink);
1425         }
1426     }
1427
1428     if (u->source) {
1429         if (source_new_data.volume_is_set) {
1430             if (u->source->set_volume)
1431                 u->source->set_volume(u->source);
1432         } else {
1433             if (u->source->get_volume)
1434                 u->source->get_volume(u->source);
1435         }
1436     }
1437
1438     if (u->sink)
1439         pa_sink_put(u->sink);
1440     if (u->source)
1441         pa_source_put(u->source);
1442
1443     pa_modargs_free(ma);
1444
1445     return 0;
1446
1447 fail:
1448
1449     if (u)
1450         pa__done(m);
1451     else if (fd >= 0)
1452         pa_close(fd);
1453
1454     if (ma)
1455         pa_modargs_free(ma);
1456
1457     return -1;
1458 }
1459
1460 void pa__done(pa_module*m) {
1461     struct userdata *u;
1462
1463     pa_assert(m);
1464
1465     if (!(u = m->userdata))
1466         return;
1467
1468     if (u->sink)
1469         pa_sink_unlink(u->sink);
1470
1471     if (u->source)
1472         pa_source_unlink(u->source);
1473
1474     if (u->thread) {
1475         pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1476         pa_thread_free(u->thread);
1477     }
1478
1479     pa_thread_mq_done(&u->thread_mq);
1480
1481     if (u->sink)
1482         pa_sink_unref(u->sink);
1483
1484     if (u->source)
1485         pa_source_unref(u->source);
1486
1487     if (u->memchunk.memblock)
1488         pa_memblock_unref(u->memchunk.memblock);
1489
1490     if (u->rtpoll_item)
1491         pa_rtpoll_item_free(u->rtpoll_item);
1492
1493     if (u->rtpoll)
1494         pa_rtpoll_free(u->rtpoll);
1495
1496     if (u->out_mmap_memblocks) {
1497         unsigned i;
1498         for (i = 0; i < u->out_nfrags; i++)
1499             if (u->out_mmap_memblocks[i])
1500                 pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
1501         pa_xfree(u->out_mmap_memblocks);
1502     }
1503
1504     if (u->in_mmap_memblocks) {
1505         unsigned i;
1506         for (i = 0; i < u->in_nfrags; i++)
1507             if (u->in_mmap_memblocks[i])
1508                 pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
1509         pa_xfree(u->in_mmap_memblocks);
1510     }
1511
1512     if (u->in_mmap && u->in_mmap != MAP_FAILED)
1513         munmap(u->in_mmap, u->in_hwbuf_size);
1514
1515     if (u->out_mmap && u->out_mmap != MAP_FAILED)
1516         munmap(u->out_mmap, u->out_hwbuf_size);
1517
1518     if (u->fd >= 0)
1519         pa_close(u->fd);
1520
1521     if (u->mixer_fd >= 0)
1522         pa_close(u->mixer_fd);
1523
1524     pa_xfree(u->device_name);
1525
1526     pa_xfree(u);
1527 }