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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <assert.h>
  32 #include <errno.h>
  33 #include <string.h>
  34 #include <fcntl.h>
  35 #include <unistd.h>
  36 #include <limits.h>
  37 #include <sys/ioctl.h>
  38 #include <sys/stat.h>
  39 #include <sys/types.h>
  40
  41 #include <signal.h>
  42 #include <stropts.h>
  43 #include <sys/conf.h>
  44 #include <sys/audio.h>
  45
  46 #include <pulse/error.h>
  47 #include <pulse/mainloop-signal.h>
  48 #include <pulse/xmalloc.h>
  49 #include <pulse/timeval.h>
  50
  51 #include <pulsecore/iochannel.h>
  52 #include <pulsecore/sink.h>
  53 #include <pulsecore/source.h>
  54 #include <pulsecore/module.h>
  55 #include <pulsecore/sample-util.h>
  56 #include <pulsecore/core-util.h>
  57 #include <pulsecore/modargs.h>
  58 #include <pulsecore/log.h>
  59 #include <pulsecore/core-error.h>
  60
  61 #include "module-solaris-symdef.h"
  62
  63 PA_MODULE_AUTHOR("Pierre Ossman")
  64 PA_MODULE_DESCRIPTION("Solaris Sink/Source")
  65 PA_MODULE_VERSION(PACKAGE_VERSION)
  66 PA_MODULE_USAGE(
  67     "sink_name=<name for the sink> "
  68     "source_name=<name for the source> "
  69     "device=<OSS device> record=<enable source?> "
  70     "playback=<enable sink?> "
  71     "format=<sample format> "
  72     "channels=<number of channels> "
  73     "rate=<sample rate> "
  74     "buffer_size=<record buffer size> "
  75     "channel_map=<channel map>")
  76
  77 struct userdata {
  78     pa_sink *sink;
  79     pa_source *source;
  80     pa_iochannel *io;
  81     pa_core *core;
  82     pa_time_event *timer;
  83     pa_usec_t poll_timeout;
  84     pa_signal_event *sig;
  85
  86     pa_memchunk memchunk;
  87
  88     unsigned int page_size;
  89
  90     uint32_t frame_size;
  91     uint32_t buffer_size;
  92     unsigned int written_bytes, read_bytes;
  93     int sink_underflow;
  94
  95     int fd;
  96     pa_module *module;
  97 };
  98
  99 static const char* const valid_modargs[] = {
 100     "sink_name",
 101     "source_name",
 102     "device",
 103     "record",
 104     "playback",
 105     "buffer_size",
 106     "format",
 107     "rate",
 108     "channels",
 109     "channel_map",
 110     NULL
 111 };
 112
 113 #define DEFAULT_SINK_NAME "solaris_output"
 114 #define DEFAULT_SOURCE_NAME "solaris_input"
 115 #define DEFAULT_DEVICE "/dev/audio"
 116
 117 #define CHUNK_SIZE 2048
 118
 119 static void update_usage(struct userdata *u) {
 120    pa_module_set_used(u->module,
 121                       (u->sink ? pa_sink_used_by(u->sink) : 0) +
 122                       (u->source ? pa_source_used_by(u->source) : 0));
 123 }
 124
 125 static void do_write(struct userdata *u) {
 126     audio_info_t info;
 127     int err;
 128     size_t len;
 129     ssize_t r;
 130
 131     assert(u);
 132
 133     /* We cannot check pa_iochannel_is_writable() because of our buffer hack */
 134     if (!u->sink)
 135         return;
 136
 137     update_usage(u);
 138
 139     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 140     assert(err >= 0);
 141
 142     /*
 143      * Since we cannot modify the size of the output buffer we fake it
 144      * by not filling it more than u->buffer_size.
 145      */
 146     len = u->buffer_size;
 147     len -= u->written_bytes - (info.play.samples * u->frame_size);
 148
 149     /* The sample counter can sometimes go backwards :( */
 150     if (len > u->buffer_size)
 151         len = 0;
 152
 153     if (!u->sink_underflow && (len == u->buffer_size))
 154         pa_log_debug("Solaris buffer underflow!");
 155
 156     len -= len % u->frame_size;
 157
 158     if (len == 0)
 159         return;
 160
 161     if (!u->memchunk.length) {
 162         if (pa_sink_render(u->sink, len, &u->memchunk) < 0) {
 163             u->sink_underflow = 1;
 164             return;
 165         }
 166     }
 167
 168     u->sink_underflow = 0;
 169
 170     assert(u->memchunk.memblock);
 171     assert(u->memchunk.memblock->data);
 172     assert(u->memchunk.length);
 173
 174     if (u->memchunk.length < len) {
 175         len = u->memchunk.length;
 176         len -= len % u->frame_size;
 177         assert(len);
 178     }
 179
 180     if ((r = pa_iochannel_write(u->io,
 181         (uint8_t*) u->memchunk.memblock->data + u->memchunk.index, len)) < 0) {
 182         pa_log("write() failed: %s", pa_cstrerror(errno));
 183         return;
 184     }
 185
 186     assert(r % u->frame_size == 0);
 187
 188     u->memchunk.index += r;
 189     u->memchunk.length -= r;
 190
 191     if (u->memchunk.length <= 0) {
 192         pa_memblock_unref(u->memchunk.memblock);
 193         u->memchunk.memblock = NULL;
 194     }
 195
 196     u->written_bytes += r;
 197 }
 198
 199 static void do_read(struct userdata *u) {
 200     pa_memchunk memchunk;
 201     int err;
 202     size_t l;
 203     ssize_t r;
 204     assert(u);
 205
 206     if (!u->source || !pa_iochannel_is_readable(u->io))
 207         return;
 208
 209     update_usage(u);
 210
 211     err = ioctl(u->fd, I_NREAD, &l);
 212     assert(err >= 0);
 213
 214     /* This is to make sure it fits in the memory pool. Also, a page
 215        should be the most efficient transfer size. */
 216     if (l > u->page_size)
 217         l = u->page_size;
 218
 219     memchunk.memblock = pa_memblock_new(u->core->mempool, l);
 220     assert(memchunk.memblock);
 221     if ((r = pa_iochannel_read(u->io, memchunk.memblock->data, memchunk.memblock->length)) < 0) {
 222         pa_memblock_unref(memchunk.memblock);
 223         if (errno != EAGAIN)
 224             pa_log("read() failed: %s", pa_cstrerror(errno));
 225         return;
 226     }
 227
 228     assert(r <= (ssize_t) memchunk.memblock->length);
 229     memchunk.length = memchunk.memblock->length = r;
 230     memchunk.index = 0;
 231
 232     pa_source_post(u->source, &memchunk);
 233     pa_memblock_unref(memchunk.memblock);
 234
 235     u->read_bytes += r;
 236 }
 237
 238 static void io_callback(pa_iochannel *io, void*userdata) {
 239     struct userdata *u = userdata;
 240     assert(u);
 241     do_write(u);
 242     do_read(u);
 243 }
 244
 245 static void timer_cb(pa_mainloop_api*a, pa_time_event *e, const struct timeval *tv, void *userdata) {
 246     struct userdata *u = userdata;
 247     struct timeval ntv;
 248
 249     assert(u);
 250
 251     do_write(u);
 252
 253     pa_gettimeofday(&ntv);
 254     pa_timeval_add(&ntv, u->poll_timeout);
 255
 256     a->time_restart(e, &ntv);
 257 }
 258
 259 static void sig_callback(pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata) {
 260     struct userdata *u = userdata;
 261     pa_cvolume old_vol;
 262
 263     assert(u);
 264
 265     if (u->sink) {
 266         assert(u->sink->get_hw_volume);
 267         memcpy(&old_vol, &u->sink->hw_volume, sizeof(pa_cvolume));
 268         if (u->sink->get_hw_volume(u->sink) < 0)
 269             return;
 270         if (memcmp(&old_vol, &u->sink->hw_volume, sizeof(pa_cvolume)) != 0) {
 271             pa_subscription_post(u->sink->core,
 272                 PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE,
 273                 u->sink->index);
 274         }
 275     }
 276
 277     if (u->source) {
 278         assert(u->source->get_hw_volume);
 279         memcpy(&old_vol, &u->source->hw_volume, sizeof(pa_cvolume));
 280         if (u->source->get_hw_volume(u->source) < 0)
 281             return;
 282         if (memcmp(&old_vol, &u->source->hw_volume, sizeof(pa_cvolume)) != 0) {
 283             pa_subscription_post(u->source->core,
 284                 PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE,
 285                 u->source->index);
 286         }
 287     }
 288 }
 289
 290 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
 291     pa_usec_t r = 0;
 292     audio_info_t info;
 293     int err;
 294     struct userdata *u = s->userdata;
 295     assert(s && u && u->sink);
 296
 297     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 298     assert(err >= 0);
 299
 300     r += pa_bytes_to_usec(u->written_bytes, &s->sample_spec);
 301     r -= pa_bytes_to_usec(info.play.samples * u->frame_size, &s->sample_spec);
 302
 303     if (u->memchunk.memblock)
 304         r += pa_bytes_to_usec(u->memchunk.length, &s->sample_spec);
 305
 306     return r;
 307 }
 308
 309 static pa_usec_t source_get_latency_cb(pa_source *s) {
 310     pa_usec_t r = 0;
 311     struct userdata *u = s->userdata;
 312     audio_info_t info;
 313     int err;
 314     assert(s && u && u->source);
 315
 316     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 317     assert(err >= 0);
 318
 319     r += pa_bytes_to_usec(info.record.samples * u->frame_size, &s->sample_spec);
 320     r -= pa_bytes_to_usec(u->read_bytes, &s->sample_spec);
 321
 322     return r;
 323 }
 324
 325 static int sink_get_hw_volume_cb(pa_sink *s) {
 326     struct userdata *u = s->userdata;
 327     audio_info_t info;
 328     int err;
 329
 330     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 331     assert(err >= 0);
 332
 333     pa_cvolume_set(&s->hw_volume, s->hw_volume.channels,
 334         info.play.gain * PA_VOLUME_NORM / AUDIO_MAX_GAIN);
 335
 336     return 0;
 337 }
 338
 339 static int sink_set_hw_volume_cb(pa_sink *s) {
 340     struct userdata *u = s->userdata;
 341     audio_info_t info;
 342
 343     AUDIO_INITINFO(&info);
 344
 345     info.play.gain = pa_cvolume_avg(&s->hw_volume) * AUDIO_MAX_GAIN / PA_VOLUME_NORM;
 346     assert(info.play.gain <= AUDIO_MAX_GAIN);
 347
 348     if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
 349         if (errno == EINVAL)
 350             pa_log("AUDIO_SETINFO: Unsupported volume.");
 351         else
 352             pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
 353         return -1;
 354     }
 355
 356     return 0;
 357 }
 358
 359 static int sink_get_hw_mute_cb(pa_sink *s) {
 360     struct userdata *u = s->userdata;
 361     audio_info_t info;
 362     int err;
 363
 364     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 365     assert(err >= 0);
 366
 367     s->hw_muted = !!info.output_muted;
 368
 369     return 0;
 370 }
 371
 372 static int sink_set_hw_mute_cb(pa_sink *s) {
 373     struct userdata *u = s->userdata;
 374     audio_info_t info;
 375
 376     AUDIO_INITINFO(&info);
 377
 378     info.output_muted = !!s->hw_muted;
 379
 380     if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
 381         pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
 382         return -1;
 383     }
 384
 385     return 0;
 386 }
 387
 388 static int source_get_hw_volume_cb(pa_source *s) {
 389     struct userdata *u = s->userdata;
 390     audio_info_t info;
 391     int err;
 392
 393     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 394     assert(err >= 0);
 395
 396     pa_cvolume_set(&s->hw_volume, s->hw_volume.channels,
 397         info.record.gain * PA_VOLUME_NORM / AUDIO_MAX_GAIN);
 398
 399     return 0;
 400 }
 401
 402 static int source_set_hw_volume_cb(pa_source *s) {
 403     struct userdata *u = s->userdata;
 404     audio_info_t info;
 405
 406     AUDIO_INITINFO(&info);
 407
 408     info.record.gain = pa_cvolume_avg(&s->hw_volume) * AUDIO_MAX_GAIN / PA_VOLUME_NORM;
 409     assert(info.record.gain <= AUDIO_MAX_GAIN);
 410
 411     if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
 412         if (errno == EINVAL)
 413             pa_log("AUDIO_SETINFO: Unsupported volume.");
 414         else
 415             pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
 416         return -1;
 417     }
 418
 419     return 0;
 420 }
 421
 422 static int pa_solaris_auto_format(int fd, int mode, pa_sample_spec *ss) {
 423     audio_info_t info;
 424
 425     AUDIO_INITINFO(&info);
 426
 427     if (mode != O_RDONLY) {
 428         info.play.sample_rate = ss->rate;
 429         info.play.channels = ss->channels;
 430         switch (ss->format) {
 431         case PA_SAMPLE_U8:
 432             info.play.precision = 8;
 433             info.play.encoding = AUDIO_ENCODING_LINEAR;
 434             break;
 435         case PA_SAMPLE_ALAW:
 436             info.play.precision = 8;
 437             info.play.encoding = AUDIO_ENCODING_ALAW;
 438             break;
 439         case PA_SAMPLE_ULAW:
 440             info.play.precision = 8;
 441             info.play.encoding = AUDIO_ENCODING_ULAW;
 442             break;
 443         case PA_SAMPLE_S16NE:
 444             info.play.precision = 16;
 445             info.play.encoding = AUDIO_ENCODING_LINEAR;
 446             break;
 447         default:
 448             return -1;
 449         }
 450     }
 451
 452     if (mode != O_WRONLY) {
 453         info.record.sample_rate = ss->rate;
 454         info.record.channels = ss->channels;
 455         switch (ss->format) {
 456         case PA_SAMPLE_U8:
 457             info.record.precision = 8;
 458             info.record.encoding = AUDIO_ENCODING_LINEAR;
 459             break;
 460         case PA_SAMPLE_ALAW:
 461             info.record.precision = 8;
 462             info.record.encoding = AUDIO_ENCODING_ALAW;
 463             break;
 464         case PA_SAMPLE_ULAW:
 465             info.record.precision = 8;
 466             info.record.encoding = AUDIO_ENCODING_ULAW;
 467             break;
 468         case PA_SAMPLE_S16NE:
 469             info.record.precision = 16;
 470             info.record.encoding = AUDIO_ENCODING_LINEAR;
 471             break;
 472         default:
 473             return -1;
 474         }
 475     }
 476
 477     if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
 478         if (errno == EINVAL)
 479             pa_log("AUDIO_SETINFO: Unsupported sample format.");
 480         else
 481             pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
 482         return -1;
 483     }
 484
 485     return 0;
 486 }
 487
 488 static int pa_solaris_set_buffer(int fd, int buffer_size) {
 489     audio_info_t info;
 490
 491     AUDIO_INITINFO(&info);
 492
 493     info.record.buffer_size = buffer_size;
 494
 495     if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
 496         if (errno == EINVAL)
 497             pa_log("AUDIO_SETINFO: Unsupported buffer size.");
 498         else
 499             pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
 500         return -1;
 501     }
 502
 503     return 0;
 504 }
 505
 506 int pa__init(pa_core *c, pa_module*m) {
 507     struct userdata *u = NULL;
 508     const char *p;
 509     int fd = -1;
 510     int buffer_size;
 511     int mode;
 512     int record = 1, playback = 1;
 513     pa_sample_spec ss;
 514     pa_channel_map map;
 515     pa_modargs *ma = NULL;
 516     struct timeval tv;
 517     char *t;
 518     assert(c && m);
 519
 520     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 521         pa_log("failed to parse module arguments.");
 522         goto fail;
 523     }
 524
 525     if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
 526         pa_log("record= and playback= expect numeric argument.");
 527         goto fail;
 528     }
 529
 530     if (!playback && !record) {
 531         pa_log("neither playback nor record enabled for device.");
 532         goto fail;
 533     }
 534
 535     mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
 536
 537     buffer_size = 16384;
 538     if (pa_modargs_get_value_s32(ma, "buffer_size", &buffer_size) < 0) {
 539         pa_log("failed to parse buffer size argument");
 540         goto fail;
 541     }
 542
 543     ss = c->default_sample_spec;
 544     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
 545         pa_log("failed to parse sample specification");
 546         goto fail;
 547     }
 548
 549     if ((fd = open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), mode | O_NONBLOCK)) < 0)
 550         goto fail;
 551
 552     pa_log_info("device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
 553
 554     if (pa_solaris_auto_format(fd, mode, &ss) < 0)
 555         goto fail;
 556
 557     if ((mode != O_WRONLY) && (buffer_size >= 1))
 558         if (pa_solaris_set_buffer(fd, buffer_size) < 0)
 559             goto fail;
 560
 561     u = pa_xmalloc(sizeof(struct userdata));
 562     u->core = c;
 563
 564     if (mode != O_WRONLY) {
 565         u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map);
 566         assert(u->source);
 567         u->source->userdata = u;
 568         u->source->get_latency = source_get_latency_cb;
 569         u->source->get_hw_volume = source_get_hw_volume_cb;
 570         u->source->set_hw_volume = source_set_hw_volume_cb;
 571         pa_source_set_owner(u->source, m);
 572         pa_source_set_description(u->source, t = pa_sprintf_malloc("Solaris PCM on '%s'", p));
 573         pa_xfree(t);
 574         u->source->is_hardware = 1;
 575     } else
 576         u->source = NULL;
 577
 578     if (mode != O_RDONLY) {
 579         u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map);
 580         assert(u->sink);
 581         u->sink->get_latency = sink_get_latency_cb;
 582         u->sink->get_hw_volume = sink_get_hw_volume_cb;
 583         u->sink->set_hw_volume = sink_set_hw_volume_cb;
 584         u->sink->get_hw_mute = sink_get_hw_mute_cb;
 585         u->sink->set_hw_mute = sink_set_hw_mute_cb;
 586         u->sink->userdata = u;
 587         pa_sink_set_owner(u->sink, m);
 588         pa_sink_set_description(u->sink, t = pa_sprintf_malloc("Solaris PCM on '%s'", p));
 589         pa_xfree(t);
 590         u->sink->is_hardware = 1;
 591     } else
 592         u->sink = NULL;
 593
 594     assert(u->source || u->sink);
 595
 596     u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : 0);
 597     assert(u->io);
 598     pa_iochannel_set_callback(u->io, io_callback, u);
 599     u->fd = fd;
 600
 601     u->memchunk.memblock = NULL;
 602     u->memchunk.length = 0;
 603
 604     /* We use this to get a reasonable chunk size */
 605     u->page_size = sysconf(_SC_PAGESIZE);
 606
 607     u->frame_size = pa_frame_size(&ss);
 608     u->buffer_size = buffer_size;
 609
 610     u->written_bytes = 0;
 611     u->read_bytes = 0;
 612
 613     u->sink_underflow = 1;
 614
 615     u->module = m;
 616     m->userdata = u;
 617
 618     u->poll_timeout = pa_bytes_to_usec(u->buffer_size / 10, &ss);
 619
 620     pa_gettimeofday(&tv);
 621     pa_timeval_add(&tv, u->poll_timeout);
 622
 623     u->timer = c->mainloop->time_new(c->mainloop, &tv, timer_cb, u);
 624     assert(u->timer);
 625
 626     u->sig = pa_signal_new(SIGPOLL, sig_callback, u);
 627     assert(u->sig);
 628     ioctl(u->fd, I_SETSIG, S_MSG);
 629
 630     pa_modargs_free(ma);
 631
 632     /* Read mixer settings */
 633     if (u->source)
 634         source_get_hw_volume_cb(u->source);
 635     if (u->sink) {
 636         sink_get_hw_volume_cb(u->sink);
 637         sink_get_hw_mute_cb(u->sink);
 638     }
 639
 640     return 0;
 641
 642 fail:
 643     if (fd >= 0)
 644         close(fd);
 645
 646     if (ma)
 647         pa_modargs_free(ma);
 648
 649     return -1;
 650 }
 651
 652 void pa__done(pa_core *c, pa_module*m) {
 653     struct userdata *u;
 654     assert(c && m);
 655
 656     if (!(u = m->userdata))
 657         return;
 658
 659     if (u->timer)
 660         c->mainloop->time_free(u->timer);
 661     ioctl(u->fd, I_SETSIG, 0);
 662     pa_signal_free(u->sig);
 663
 664     if (u->memchunk.memblock)
 665         pa_memblock_unref(u->memchunk.memblock);
 666
 667     if (u->sink) {
 668         pa_sink_disconnect(u->sink);
 669         pa_sink_unref(u->sink);
 670     }
 671
 672     if (u->source) {
 673         pa_source_disconnect(u->source);
 674         pa_source_unref(u->source);
 675     }
 676
 677     pa_iochannel_free(u->io);
 678     pa_xfree(u);
 679 }