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

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