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 sink_get_volume(pa_sink *s);
 512 static int source_get_volume(pa_source *s);
 513
 514 static int unsuspend(struct userdata *u) {
 515     int m;
 516     pa_sample_spec ss, *ss_original;
 517     int frag_size, in_frag_size, out_frag_size;
 518     int in_nfrags, out_nfrags;
 519     struct audio_buf_info info;
 520
 521     pa_assert(u);
 522     pa_assert(u->fd < 0);
 523
 524     m = u->mode;
 525
 526     pa_log_info("Trying resume...");
 527
 528     if ((u->fd = pa_oss_open(u->device_name, &m, NULL)) < 0) {
 529         pa_log_warn("Resume failed, device busy (%s)", pa_cstrerror(errno));
 530         return -1;
 531
 532     if (m != u->mode)
 533         pa_log_warn("Resume failed, couldn't open device with original access mode.");
 534         goto fail;
 535     }
 536
 537     if (u->nfrags >= 2 && u->frag_size >= 1)
 538         if (pa_oss_set_fragments(u->fd, u->nfrags, u->frag_size) < 0) {
 539             pa_log_warn("Resume failed, couldn't set original fragment settings.");
 540             goto fail;
 541         }
 542
 543     ss = *(ss_original = u->sink ? &u->sink->sample_spec : &u->source->sample_spec);
 544     if (pa_oss_auto_format(u->fd, &ss) < 0 || !pa_sample_spec_equal(&ss, ss_original)) {
 545         pa_log_warn("Resume failed, couldn't set original sample format settings.");
 546         goto fail;
 547     }
 548
 549     if (ioctl(u->fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
 550         pa_log_warn("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
 551         goto fail;
 552     }
 553
 554     in_frag_size = out_frag_size = frag_size;
 555     in_nfrags = out_nfrags = u->nfrags;
 556
 557     if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
 558         in_frag_size = info.fragsize;
 559         in_nfrags = info.fragstotal;
 560     }
 561
 562     if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
 563         out_frag_size = info.fragsize;
 564         out_nfrags = info.fragstotal;
 565     }
 566
 567     if ((u->source && (in_frag_size != (int) u->in_fragment_size || in_nfrags != (int) u->in_nfrags)) ||
 568         (u->sink && (out_frag_size != (int) u->out_fragment_size || out_nfrags != (int) u->out_nfrags))) {
 569         pa_log_warn("Resume failed, input fragment settings don't match.");
 570         goto fail;
 571     }
 572
 573     if (u->use_mmap) {
 574         if (u->source) {
 575             if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
 576                 pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
 577                 goto fail;
 578             }
 579         }
 580
 581         if (u->sink) {
 582             if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
 583                 pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
 584                 if (u->in_mmap && u->in_mmap != MAP_FAILED) {
 585                     munmap(u->in_mmap, u->in_hwbuf_size);
 586                     u->in_mmap = NULL;
 587                 }
 588
 589                 goto fail;
 590             }
 591
 592             pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
 593         }
 594     }
 595
 596     u->out_mmap_current = u->in_mmap_current = 0;
 597     u->out_mmap_saved_nfrags = u->in_mmap_saved_nfrags = 0;
 598
 599     pa_assert(!u->rtpoll_item);
 600
 601     build_pollfd(u);
 602
 603     if (u->sink)
 604         sink_get_volume(u->sink);
 605     if (u->source)
 606         source_get_volume(u->source);
 607
 608     pa_log_info("Resumed successfully...");
 609
 610     return 0;
 611
 612 fail:
 613     pa_close(u->fd);
 614     u->fd = -1;
 615     return -1;
 616 }
 617
 618 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 619     struct userdata *u = PA_SINK(o)->userdata;
 620     int ret;
 621     pa_bool_t do_trigger = FALSE, quick = TRUE;
 622
 623     switch (code) {
 624
 625         case PA_SINK_MESSAGE_GET_LATENCY: {
 626             pa_usec_t r = 0;
 627
 628             if (u->fd >= 0) {
 629                 if (u->use_mmap)
 630                     r = mmap_sink_get_latency(u);
 631                 else
 632                     r = io_sink_get_latency(u);
 633             }
 634
 635             *((pa_usec_t*) data) = r;
 636
 637             return 0;
 638         }
 639
 640         case PA_SINK_MESSAGE_SET_STATE:
 641
 642             switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
 643
 644                 case PA_SINK_SUSPENDED:
 645                     pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
 646
 647                     if (!u->source || u->source_suspended) {
 648                         if (suspend(u) < 0)
 649                             return -1;
 650                     }
 651
 652                     do_trigger = TRUE;
 653
 654                     u->sink_suspended = TRUE;
 655                     break;
 656
 657                 case PA_SINK_IDLE:
 658                 case PA_SINK_RUNNING:
 659
 660                     if (u->sink->thread_info.state == PA_SINK_INIT) {
 661                         do_trigger = TRUE;
 662                         quick = u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state);
 663                     }
 664
 665                     if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
 666
 667                         if (!u->source || u->source_suspended) {
 668                             if (unsuspend(u) < 0)
 669                                 return -1;
 670                             quick = FALSE;
 671                         }
 672
 673                         do_trigger = TRUE;
 674
 675                         u->out_mmap_current = 0;
 676                         u->out_mmap_saved_nfrags = 0;
 677
 678                         u->sink_suspended = FALSE;
 679                     }
 680
 681                     break;
 682
 683                 case PA_SINK_UNLINKED:
 684                 case PA_SINK_INIT:
 685                     ;
 686             }
 687
 688             break;
 689
 690     }
 691
 692     ret = pa_sink_process_msg(o, code, data, offset, chunk);
 693
 694     if (do_trigger)
 695         trigger(u, quick);
 696
 697     return ret;
 698 }
 699
 700 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 701     struct userdata *u = PA_SOURCE(o)->userdata;
 702     int ret;
 703     int do_trigger = FALSE, quick = TRUE;
 704
 705     switch (code) {
 706
 707         case PA_SOURCE_MESSAGE_GET_LATENCY: {
 708             pa_usec_t r = 0;
 709
 710             if (u->fd >= 0) {
 711                 if (u->use_mmap)
 712                     r = mmap_source_get_latency(u);
 713                 else
 714                     r = io_source_get_latency(u);
 715             }
 716
 717             *((pa_usec_t*) data) = r;
 718             return 0;
 719         }
 720
 721         case PA_SOURCE_MESSAGE_SET_STATE:
 722
 723             switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
 724                 case PA_SOURCE_SUSPENDED:
 725                     pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
 726
 727                     if (!u->sink || u->sink_suspended) {
 728                         if (suspend(u) < 0)
 729                             return -1;
 730                     }
 731
 732                     do_trigger = TRUE;
 733
 734                     u->source_suspended = TRUE;
 735                     break;
 736
 737                 case PA_SOURCE_IDLE:
 738                 case PA_SOURCE_RUNNING:
 739
 740                     if (u->source->thread_info.state == PA_SOURCE_INIT) {
 741                         do_trigger = TRUE;
 742                         quick = u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state);
 743                     }
 744
 745                     if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
 746
 747                         if (!u->sink || u->sink_suspended) {
 748                             if (unsuspend(u) < 0)
 749                                 return -1;
 750                             quick = FALSE;
 751                         }
 752
 753                         do_trigger = TRUE;
 754
 755                         u->in_mmap_current = 0;
 756                         u->in_mmap_saved_nfrags = 0;
 757
 758                         u->source_suspended = FALSE;
 759                     }
 760                     break;
 761
 762                 case PA_SOURCE_UNLINKED:
 763                 case PA_SOURCE_INIT:
 764                     ;
 765
 766             }
 767             break;
 768
 769     }
 770
 771     ret = pa_source_process_msg(o, code, data, offset, chunk);
 772
 773     if (do_trigger)
 774         trigger(u, quick);
 775
 776     return ret;
 777 }
 778
 779 static int sink_get_volume(pa_sink *s) {
 780     struct userdata *u;
 781     int r;
 782
 783     pa_assert_se(u = s->userdata);
 784
 785     pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
 786
 787     if (u->mixer_devmask & SOUND_MASK_VOLUME)
 788         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_VOLUME, &s->sample_spec, &s->volume)) >= 0)
 789             return r;
 790
 791     if (u->mixer_devmask & SOUND_MASK_PCM)
 792         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_PCM, &s->sample_spec, &s->volume)) >= 0)
 793             return r;
 794
 795     pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
 796     return -1;
 797 }
 798
 799 static int sink_set_volume(pa_sink *s) {
 800     struct userdata *u;
 801     int r;
 802
 803     pa_assert_se(u = s->userdata);
 804
 805     pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
 806
 807     if (u->mixer_devmask & SOUND_MASK_VOLUME)
 808         if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_VOLUME, &s->sample_spec, &s->volume)) >= 0)
 809             return r;
 810
 811     if (u->mixer_devmask & SOUND_MASK_PCM)
 812         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_PCM, &s->sample_spec, &s->volume)) >= 0)
 813             return r;
 814
 815     pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
 816     return -1;
 817 }
 818
 819 static int source_get_volume(pa_source *s) {
 820     struct userdata *u;
 821     int r;
 822
 823     pa_assert_se(u = s->userdata);
 824
 825     pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
 826
 827     if (u->mixer_devmask & SOUND_MASK_IGAIN)
 828         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_IGAIN, &s->sample_spec, &s->volume)) >= 0)
 829             return r;
 830
 831     if (u->mixer_devmask & SOUND_MASK_RECLEV)
 832         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_RECLEV, &s->sample_spec, &s->volume)) >= 0)
 833             return r;
 834
 835     pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
 836     return -1;
 837 }
 838
 839 static int source_set_volume(pa_source *s) {
 840     struct userdata *u;
 841     int r;
 842
 843     pa_assert_se(u = s->userdata);
 844
 845     pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
 846
 847     if (u->mixer_devmask & SOUND_MASK_IGAIN)
 848         if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_IGAIN, &s->sample_spec, &s->volume)) >= 0)
 849             return r;
 850
 851     if (u->mixer_devmask & SOUND_MASK_RECLEV)
 852         if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_RECLEV, &s->sample_spec, &s->volume)) >= 0)
 853             return r;
 854
 855     pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
 856     return -1;
 857 }
 858
 859 static void thread_func(void *userdata) {
 860     struct userdata *u = userdata;
 861     int write_type = 0, read_type = 0;
 862     unsigned short revents = 0;
 863
 864     pa_assert(u);
 865
 866     pa_log_debug("Thread starting up");
 867
 868     if (u->core->realtime_scheduling)
 869         pa_make_realtime(u->core->realtime_priority);
 870
 871     pa_thread_mq_install(&u->thread_mq);
 872     pa_rtpoll_install(u->rtpoll);
 873
 874     for (;;) {
 875         int ret;
 876
 877 /*        pa_log("loop");    */
 878
 879         if (PA_SINK_IS_OPENED(u->sink->thread_info.state))
 880             if (u->sink->thread_info.rewind_requested)
 881                 pa_sink_process_rewind(u->sink, 0);
 882
 883         /* Render some data and write it to the dsp */
 884
 885         if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((revents & POLLOUT) || u->use_mmap || u->use_getospace)) {
 886
 887             if (u->use_mmap) {
 888
 889                 if ((ret = mmap_write(u)) < 0)
 890                     goto fail;
 891
 892                 revents &= ~POLLOUT;
 893
 894                 if (ret > 0)
 895                     continue;
 896
 897             } else {
 898                 ssize_t l;
 899                 pa_bool_t loop = FALSE, work_done = FALSE;
 900
 901                 l = u->out_fragment_size;
 902
 903                 if (u->use_getospace) {
 904                     audio_buf_info info;
 905
 906                     if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
 907                         pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
 908                         u->use_getospace = FALSE;
 909                     } else {
 910                         l = info.bytes;
 911
 912                         /* We loop only if GETOSPACE worked and we
 913                          * actually *know* that we can write more than
 914                          * one fragment at a time */
 915                         loop = TRUE;
 916                     }
 917                 }
 918
 919                 /* Round down to multiples of the fragment size,
 920                  * because OSS needs that (at least some versions
 921                  * do) */
 922                 l = (l/u->out_fragment_size) * u->out_fragment_size;
 923
 924                 /* Hmm, so poll() signalled us that we can read
 925                  * something, but GETOSPACE told us there was nothing?
 926                  * Hmm, make the best of it, try to read some data, to
 927                  * avoid spinning forever. */
 928                 if (l <= 0 && (revents & POLLOUT)) {
 929                     l = u->out_fragment_size;
 930                     loop = FALSE;
 931                 }
 932
 933                 while (l > 0) {
 934                     void *p;
 935                     ssize_t t;
 936
 937                     if (u->memchunk.length <= 0)
 938                         pa_sink_render(u->sink, l, &u->memchunk);
 939
 940                     pa_assert(u->memchunk.length > 0);
 941
 942                     p = pa_memblock_acquire(u->memchunk.memblock);
 943                     t = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
 944                     pa_memblock_release(u->memchunk.memblock);
 945
 946 /*                     pa_log("wrote %i bytes of %u", t, l); */
 947
 948                     pa_assert(t != 0);
 949
 950                     if (t < 0) {
 951
 952                         if (errno == EINTR)
 953                             continue;
 954
 955                         else if (errno == EAGAIN) {
 956                             pa_log_debug("EAGAIN");
 957
 958                             revents &= ~POLLOUT;
 959                             break;
 960
 961                         } else {
 962                             pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
 963                             goto fail;
 964                         }
 965
 966                     } else {
 967
 968                         u->memchunk.index += t;
 969                         u->memchunk.length -= t;
 970
 971                         if (u->memchunk.length <= 0) {
 972                             pa_memblock_unref(u->memchunk.memblock);
 973                             pa_memchunk_reset(&u->memchunk);
 974                         }
 975
 976                         l -= t;
 977
 978                         revents &= ~POLLOUT;
 979                         work_done = TRUE;
 980                     }
 981
 982                     if (!loop)
 983                         break;
 984                 }
 985
 986                 if (work_done)
 987                     continue;
 988             }
 989         }
 990
 991         /* Try to read some data and pass it on to the source driver. */
 992
 993         if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) && ((revents & POLLIN) || u->use_mmap || u->use_getispace)) {
 994
 995             if (u->use_mmap) {
 996
 997                 if ((ret = mmap_read(u)) < 0)
 998                     goto fail;
 999
1000                 revents &= ~POLLIN;
1001
1002                 if (ret > 0)
1003                     continue;
1004
1005             } else {
1006
1007                 void *p;
1008                 ssize_t l;
1009                 pa_memchunk memchunk;
1010                 pa_bool_t loop = FALSE, work_done = FALSE;
1011
1012                 l = u->in_fragment_size;
1013
1014                 if (u->use_getispace) {
1015                     audio_buf_info info;
1016
1017                     if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
1018                         pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
1019                         u->use_getispace = FALSE;
1020                     } else {
1021                         l = info.bytes;
1022                         loop = TRUE;
1023                     }
1024                 }
1025
1026                 l = (l/u->in_fragment_size) * u->in_fragment_size;
1027
1028                 if (l <= 0 && (revents & POLLIN)) {
1029                     l = u->in_fragment_size;
1030                     loop = FALSE;
1031                 }
1032
1033                 while (l > 0) {
1034                     ssize_t t, k;
1035
1036                     pa_assert(l > 0);
1037
1038                     memchunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
1039
1040                     k = pa_memblock_get_length(memchunk.memblock);
1041
1042                     if (k > l)
1043                         k = l;
1044
1045                     k = (k/u->frame_size)*u->frame_size;
1046
1047                     p = pa_memblock_acquire(memchunk.memblock);
1048                     t = pa_read(u->fd, p, k, &read_type);
1049                     pa_memblock_release(memchunk.memblock);
1050
1051                     pa_assert(t != 0); /* EOF cannot happen */
1052
1053 /*                     pa_log("read %i bytes of %u", t, l); */
1054
1055                     if (t < 0) {
1056                         pa_memblock_unref(memchunk.memblock);
1057
1058                         if (errno == EINTR)
1059                             continue;
1060
1061                         else if (errno == EAGAIN) {
1062                             pa_log_debug("EAGAIN");
1063
1064                             revents &= ~POLLIN;
1065                             break;
1066
1067                         } else {
1068                             pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
1069                             goto fail;
1070                         }
1071
1072                     } else {
1073                         memchunk.index = 0;
1074                         memchunk.length = t;
1075
1076                         pa_source_post(u->source, &memchunk);
1077                         pa_memblock_unref(memchunk.memblock);
1078
1079                         l -= t;
1080
1081                         revents &= ~POLLIN;
1082                         work_done = TRUE;
1083                     }
1084
1085                     if (!loop)
1086                         break;
1087                 }
1088
1089                 if (work_done)
1090                     continue;
1091             }
1092         }
1093
1094 /*         pa_log("loop2 revents=%i", revents); */
1095
1096         if (u->rtpoll_item) {
1097             struct pollfd *pollfd;
1098
1099             pa_assert(u->fd >= 0);
1100
1101             pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1102             pollfd->events =
1103                 ((u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 0) |
1104                 ((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) ? POLLOUT : 0);
1105         }
1106
1107         /* Hmm, nothing to do. Let's sleep */
1108         if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1109             goto fail;
1110
1111         if (ret == 0)
1112             goto finish;
1113
1114         if (u->rtpoll_item) {
1115             struct pollfd *pollfd;
1116
1117             pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1118
1119             if (pollfd->revents & ~(POLLOUT|POLLIN)) {
1120                 pa_log("DSP shutdown.");
1121                 goto fail;
1122             }
1123
1124             revents = pollfd->revents;
1125         } else
1126             revents = 0;
1127     }
1128
1129 fail:
1130     /* If this was no regular exit from the loop we have to continue
1131      * processing messages until we received PA_MESSAGE_SHUTDOWN */
1132     pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1133     pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1134
1135 finish:
1136     pa_log_debug("Thread shutting down");
1137 }
1138
1139 int pa__init(pa_module*m) {
1140
1141     struct audio_buf_info info;
1142     struct userdata *u = NULL;
1143     const char *dev;
1144     int fd = -1;
1145     int nfrags, frag_size;
1146     int mode, caps;
1147     pa_bool_t record = TRUE, playback = TRUE, use_mmap = TRUE;
1148     pa_sample_spec ss;
1149     pa_channel_map map;
1150     pa_modargs *ma = NULL;
1151     char hwdesc[64];
1152     const char *name;
1153     pa_bool_t namereg_fail;
1154     pa_sink_new_data sink_new_data;
1155     pa_source_new_data source_new_data;
1156
1157     pa_assert(m);
1158
1159     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
1160         pa_log("Failed to parse module arguments.");
1161         goto fail;
1162     }
1163
1164     if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
1165         pa_log("record= and playback= expect boolean argument.");
1166         goto fail;
1167     }
1168
1169     if (!playback && !record) {
1170         pa_log("Neither playback nor record enabled for device.");
1171         goto fail;
1172     }
1173
1174     mode = (playback && record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
1175
1176     ss = m->core->default_sample_spec;
1177     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_OSS) < 0) {
1178         pa_log("Failed to parse sample specification or channel map");
1179         goto fail;
1180     }
1181
1182     nfrags = m->core->default_n_fragments;
1183     frag_size = pa_usec_to_bytes(m->core->default_fragment_size_msec*1000, &ss);
1184     if (frag_size <= 0)
1185         frag_size = pa_frame_size(&ss);
1186
1187     if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
1188         pa_log("Failed to parse fragments arguments");
1189         goto fail;
1190     }
1191
1192     if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
1193         pa_log("Failed to parse mmap argument.");
1194         goto fail;
1195     }
1196
1197     if ((fd = pa_oss_open(dev = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, &caps)) < 0)
1198         goto fail;
1199
1200     if (use_mmap && (!(caps & DSP_CAP_MMAP) || !(caps & DSP_CAP_TRIGGER))) {
1201         pa_log_info("OSS device not mmap capable, falling back to UNIX read/write mode.");
1202         use_mmap = 0;
1203     }
1204
1205     if (use_mmap && mode == O_WRONLY) {
1206         pa_log_info("Device opened for playback only, cannot do memory mapping, falling back to UNIX write() mode.");
1207         use_mmap = 0;
1208     }
1209
1210     if (pa_oss_get_hw_description(dev, hwdesc, sizeof(hwdesc)) >= 0)
1211         pa_log_info("Hardware name is '%s'.", hwdesc);
1212     else
1213         hwdesc[0] = 0;
1214
1215     pa_log_info("Device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
1216
1217     if (nfrags >= 2 && frag_size >= 1)
1218         if (pa_oss_set_fragments(fd, nfrags, frag_size) < 0)
1219             goto fail;
1220
1221     if (pa_oss_auto_format(fd, &ss) < 0)
1222         goto fail;
1223
1224     if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
1225         pa_log("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
1226         goto fail;
1227     }
1228     pa_assert(frag_size > 0);
1229
1230     u = pa_xnew0(struct userdata, 1);
1231     u->core = m->core;
1232     u->module = m;
1233     m->userdata = u;
1234     u->fd = fd;
1235     u->mixer_fd = -1;
1236     u->use_getospace = u->use_getispace = TRUE;
1237     u->use_getodelay = TRUE;
1238     u->mode = mode;
1239     u->frame_size = pa_frame_size(&ss);
1240     u->device_name = pa_xstrdup(dev);
1241     u->in_nfrags = u->out_nfrags = u->nfrags = nfrags;
1242     u->out_fragment_size = u->in_fragment_size = u->frag_size = frag_size;
1243     u->use_mmap = use_mmap;
1244     u->rtpoll = pa_rtpoll_new();
1245     pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1246     u->rtpoll_item = NULL;
1247     build_pollfd(u);
1248
1249     if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
1250         pa_log_info("Input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
1251         u->in_fragment_size = info.fragsize;
1252         u->in_nfrags = info.fragstotal;
1253         u->use_getispace = TRUE;
1254     }
1255
1256     if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
1257         pa_log_info("Output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
1258         u->out_fragment_size = info.fragsize;
1259         u->out_nfrags = info.fragstotal;
1260         u->use_getospace = TRUE;
1261     }
1262
1263     u->in_hwbuf_size = u->in_nfrags * u->in_fragment_size;
1264     u->out_hwbuf_size = u->out_nfrags * u->out_fragment_size;
1265
1266     if (mode != O_WRONLY) {
1267         char *name_buf = NULL;
1268
1269         if (use_mmap) {
1270             if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED) {
1271                 pa_log_warn("mmap(PROT_READ) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
1272                 use_mmap = u->use_mmap = FALSE;
1273                 u->in_mmap = NULL;
1274             } else
1275                 pa_log_debug("Successfully mmap()ed input buffer.");
1276         }
1277
1278         if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
1279             namereg_fail = TRUE;
1280         else {
1281             name = name_buf = pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(dev));
1282             namereg_fail = FALSE;
1283         }
1284
1285         pa_source_new_data_init(&source_new_data);
1286         source_new_data.driver = __FILE__;
1287         source_new_data.module = m;
1288         pa_source_new_data_set_name(&source_new_data, name);
1289         source_new_data.namereg_fail = namereg_fail;
1290         pa_source_new_data_set_sample_spec(&source_new_data, &ss);
1291         pa_source_new_data_set_channel_map(&source_new_data, &map);
1292         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
1293         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_API, "oss");
1294         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
1295         pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
1296         pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->in_hwbuf_size));
1297         pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->in_fragment_size));
1298
1299         u->source = pa_source_new(m->core, &source_new_data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
1300         pa_source_new_data_done(&source_new_data);
1301         pa_xfree(name_buf);
1302
1303         if (!u->source) {
1304             pa_log("Failed to create source object");
1305             goto fail;
1306         }
1307
1308         u->source->parent.process_msg = source_process_msg;
1309         u->source->userdata = u;
1310
1311         pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1312         pa_source_set_rtpoll(u->source, u->rtpoll);
1313         u->source->refresh_volume = TRUE;
1314
1315         if (use_mmap)
1316             u->in_mmap_memblocks = pa_xnew0(pa_memblock*, u->in_nfrags);
1317     }
1318
1319     if (mode != O_RDONLY) {
1320         char *name_buf = NULL;
1321
1322         if (use_mmap) {
1323             if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) {
1324                 if (mode == O_RDWR) {
1325                     pa_log_debug("mmap() failed for input. Changing to O_WRONLY mode.");
1326                     mode = O_WRONLY;
1327                     goto go_on;
1328                 } else {
1329                     pa_log_warn("mmap(PROT_WRITE) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
1330                     u->use_mmap = use_mmap = FALSE;
1331                     u->out_mmap = NULL;
1332                 }
1333             } else {
1334                 pa_log_debug("Successfully mmap()ed output buffer.");
1335                 pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
1336             }
1337         }
1338
1339         if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
1340             namereg_fail = TRUE;
1341         else {
1342             name = name_buf = pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(dev));
1343             namereg_fail = FALSE;
1344         }
1345
1346         pa_sink_new_data_init(&sink_new_data);
1347         sink_new_data.driver = __FILE__;
1348         sink_new_data.module = m;
1349         pa_sink_new_data_set_name(&sink_new_data, name);
1350         sink_new_data.namereg_fail = namereg_fail;
1351         pa_sink_new_data_set_sample_spec(&sink_new_data, &ss);
1352         pa_sink_new_data_set_channel_map(&sink_new_data, &map);
1353         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
1354         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_API, "oss");
1355         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
1356         pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
1357         pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->out_hwbuf_size));
1358         pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->out_fragment_size));
1359
1360         u->sink = pa_sink_new(m->core, &sink_new_data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
1361         pa_sink_new_data_done(&sink_new_data);
1362         pa_xfree(name_buf);
1363
1364         if (!u->sink) {
1365             pa_log("Failed to create sink object");
1366             goto fail;
1367         }
1368
1369         u->sink->parent.process_msg = sink_process_msg;
1370         u->sink->userdata = u;
1371
1372         pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1373         pa_sink_set_rtpoll(u->sink, u->rtpoll);
1374         u->sink->refresh_volume = TRUE;
1375
1376         u->sink->thread_info.max_request = u->out_hwbuf_size;
1377
1378         if (use_mmap)
1379             u->out_mmap_memblocks = pa_xnew0(pa_memblock*, u->out_nfrags);
1380     }
1381
1382     if ((u->mixer_fd = pa_oss_open_mixer_for_device(u->device_name)) >= 0) {
1383         pa_bool_t do_close = TRUE;
1384         u->mixer_devmask = 0;
1385
1386         if (ioctl(fd, SOUND_MIXER_READ_DEVMASK, &u->mixer_devmask) < 0)
1387             pa_log_warn("SOUND_MIXER_READ_DEVMASK failed: %s", pa_cstrerror(errno));
1388
1389         else {
1390             if (u->sink && (u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM))) {
1391                 pa_log_debug("Found hardware mixer track for playback.");
1392                 u->sink->flags |= PA_SINK_HW_VOLUME_CTRL;
1393                 u->sink->get_volume = sink_get_volume;
1394                 u->sink->set_volume = sink_set_volume;
1395                 do_close = FALSE;
1396             }
1397
1398             if (u->source && (u->mixer_devmask & (SOUND_MASK_RECLEV|SOUND_MASK_IGAIN))) {
1399                 pa_log_debug("Found hardware mixer track for recording.");
1400                 u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL;
1401                 u->source->get_volume = source_get_volume;
1402                 u->source->set_volume = source_set_volume;
1403                 do_close = FALSE;
1404             }
1405         }
1406
1407         if (do_close) {
1408             pa_close(u->mixer_fd);
1409             u->mixer_fd = -1;
1410         }
1411     }
1412
1413 go_on:
1414
1415     pa_assert(u->source || u->sink);
1416
1417     pa_memchunk_reset(&u->memchunk);
1418
1419     if (!(u->thread = pa_thread_new(thread_func, u))) {
1420         pa_log("Failed to create thread.");
1421         goto fail;
1422     }
1423
1424     /* Read mixer settings */
1425     if (u->sink) {
1426         if (sink_new_data.volume_is_set) {
1427             if (u->sink->set_volume)
1428                 u->sink->set_volume(u->sink);
1429         } else {
1430             if (u->sink->get_volume)
1431                 u->sink->get_volume(u->sink);
1432         }
1433     }
1434
1435     if (u->source) {
1436         if (source_new_data.volume_is_set) {
1437             if (u->source->set_volume)
1438                 u->source->set_volume(u->source);
1439         } else {
1440             if (u->source->get_volume)
1441                 u->source->get_volume(u->source);
1442         }
1443     }
1444
1445     if (u->sink)
1446         pa_sink_put(u->sink);
1447     if (u->source)
1448         pa_source_put(u->source);
1449
1450     pa_modargs_free(ma);
1451
1452     return 0;
1453
1454 fail:
1455
1456     if (u)
1457         pa__done(m);
1458     else if (fd >= 0)
1459         pa_close(fd);
1460
1461     if (ma)
1462         pa_modargs_free(ma);
1463
1464     return -1;
1465 }
1466
1467 void pa__done(pa_module*m) {
1468     struct userdata *u;
1469
1470     pa_assert(m);
1471
1472     if (!(u = m->userdata))
1473         return;
1474
1475     if (u->sink)
1476         pa_sink_unlink(u->sink);
1477
1478     if (u->source)
1479         pa_source_unlink(u->source);
1480
1481     if (u->thread) {
1482         pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1483         pa_thread_free(u->thread);
1484     }
1485
1486     pa_thread_mq_done(&u->thread_mq);
1487
1488     if (u->sink)
1489         pa_sink_unref(u->sink);
1490
1491     if (u->source)
1492         pa_source_unref(u->source);
1493
1494     if (u->memchunk.memblock)
1495         pa_memblock_unref(u->memchunk.memblock);
1496
1497     if (u->rtpoll_item)
1498         pa_rtpoll_item_free(u->rtpoll_item);
1499
1500     if (u->rtpoll)
1501         pa_rtpoll_free(u->rtpoll);
1502
1503     if (u->out_mmap_memblocks) {
1504         unsigned i;
1505         for (i = 0; i < u->out_nfrags; i++)
1506             if (u->out_mmap_memblocks[i])
1507                 pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
1508         pa_xfree(u->out_mmap_memblocks);
1509     }
1510
1511     if (u->in_mmap_memblocks) {
1512         unsigned i;
1513         for (i = 0; i < u->in_nfrags; i++)
1514             if (u->in_mmap_memblocks[i])
1515                 pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
1516         pa_xfree(u->in_mmap_memblocks);
1517     }
1518
1519     if (u->in_mmap && u->in_mmap != MAP_FAILED)
1520         munmap(u->in_mmap, u->in_hwbuf_size);
1521
1522     if (u->out_mmap && u->out_mmap != MAP_FAILED)
1523         munmap(u->out_mmap, u->out_hwbuf_size);
1524
1525     if (u->fd >= 0)
1526         pa_close(u->fd);
1527
1528     if (u->mixer_fd >= 0)
1529         pa_close(u->mixer_fd);
1530
1531     pa_xfree(u->device_name);
1532
1533     pa_xfree(u);
1534 }