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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio 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   polypaudio 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 polypaudio; 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 <polyp/mainloop-signal.h>
  44
  45 #include <polypcore/iochannel.h>
  46 #include <polypcore/sink.h>
  47 #include <polypcore/source.h>
  48 #include <polypcore/module.h>
  49 #include <polypcore/sample-util.h>
  50 #include <polypcore/util.h>
  51 #include <polypcore/modargs.h>
  52 #include <polypcore/xmalloc.h>
  53 #include <polypcore/log.h>
  54
  55 #include "module-solaris-symdef.h"
  56
  57 PA_MODULE_AUTHOR("Pierre Ossman")
  58 PA_MODULE_DESCRIPTION("Solaris Sink/Source")
  59 PA_MODULE_VERSION(PACKAGE_VERSION)
  60 PA_MODULE_USAGE("sink_name=<name for the sink> source_name=<name for the source> device=<OSS device> record=<enable source?> playback=<enable sink?> format=<sample format> channels=<number of channels> rate=<sample rate> buffer_size=<record buffer size>")
  61
  62 struct userdata {
  63     pa_sink *sink;
  64     pa_source *source;
  65     pa_iochannel *io;
  66     pa_core *core;
  67     pa_signal_event *sig;
  68
  69     pa_memchunk memchunk, silence;
  70
  71     uint32_t sample_size;
  72     uint32_t buffer_size;
  73     unsigned int written_bytes, read_bytes;
  74
  75     int fd;
  76     pa_module *module;
  77 };
  78
  79 static const char* const valid_modargs[] = {
  80     "sink_name",
  81     "source_name",
  82     "device",
  83     "record",
  84     "playback",
  85     "buffer_size",
  86     "format",
  87     "rate",
  88     "channels",
  89     NULL
  90 };
  91
  92 #define DEFAULT_SINK_NAME "solaris_output"
  93 #define DEFAULT_SOURCE_NAME "solaris_input"
  94 #define DEFAULT_DEVICE "/dev/audio"
  95
  96 #define CHUNK_SIZE 2048
  97
  98 static void update_usage(struct userdata *u) {
  99    pa_module_set_used(u->module,
 100                       (u->sink ? pa_idxset_size(u->sink->inputs) : 0) +
 101                       (u->sink ? pa_idxset_size(u->sink->monitor_source->outputs) : 0) +
 102                       (u->source ? pa_idxset_size(u->source->outputs) : 0));
 103 }
 104
 105 static void do_write(struct userdata *u) {
 106     audio_info_t info;
 107     int err;
 108     pa_memchunk *memchunk;
 109     size_t len;
 110     ssize_t r;
 111
 112     assert(u);
 113
 114     if (!u->sink || !pa_iochannel_is_writable(u->io))
 115         return;
 116
 117     update_usage(u);
 118
 119     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 120     assert(err >= 0);
 121
 122     /*
 123      * Since we cannot modify the size of the output buffer we fake it
 124      * by not filling it more than u->buffer_size.
 125      */
 126     len = u->buffer_size;
 127     len -= u->written_bytes - (info.play.samples * u->sample_size);
 128
 129     /*
 130      * Do not fill more than half the buffer in one chunk since we only
 131      * get notifications upon completion of entire chunks.
 132      */
 133     if (len > (u->buffer_size / 2))
 134         len = u->buffer_size / 2;
 135
 136     if (len < u->sample_size)
 137         return;
 138
 139     memchunk = &u->memchunk;
 140
 141     if (!memchunk->length)
 142         if (pa_sink_render(u->sink, len, memchunk) < 0)
 143             memchunk = &u->silence;
 144
 145     assert(memchunk->memblock);
 146     assert(memchunk->memblock->data);
 147     assert(memchunk->length);
 148
 149     if (memchunk->length < len)
 150         len = memchunk->length;
 151
 152     if ((r = pa_iochannel_write(u->io, (uint8_t*) memchunk->memblock->data + memchunk->index, len)) < 0) {
 153         pa_log(__FILE__": write() failed: %s", strerror(errno));
 154         return;
 155     }
 156
 157     if (memchunk == &u->silence)
 158         assert(r % u->sample_size == 0);
 159     else {
 160         u->memchunk.index += r;
 161         u->memchunk.length -= r;
 162
 163         if (u->memchunk.length <= 0) {
 164             pa_memblock_unref(u->memchunk.memblock);
 165             u->memchunk.memblock = NULL;
 166         }
 167     }
 168
 169     u->written_bytes += r;
 170
 171     /*
 172      * Write 0 bytes which will generate a SIGPOLL when "played".
 173      */
 174     if (write(u->fd, NULL, 0) < 0) {
 175         pa_log(__FILE__": write() failed: %s", strerror(errno));
 176         return;
 177     }
 178 }
 179
 180 static void do_read(struct userdata *u) {
 181     pa_memchunk memchunk;
 182     int err, l;
 183     ssize_t r;
 184     assert(u);
 185
 186     if (!u->source || !pa_iochannel_is_readable(u->io))
 187         return;
 188
 189     update_usage(u);
 190
 191     err = ioctl(u->fd, I_NREAD, &l);
 192     assert(err >= 0);
 193
 194     memchunk.memblock = pa_memblock_new(l, u->core->memblock_stat);
 195     assert(memchunk.memblock);
 196     if ((r = pa_iochannel_read(u->io, memchunk.memblock->data, memchunk.memblock->length)) < 0) {
 197         pa_memblock_unref(memchunk.memblock);
 198         if (errno != EAGAIN)
 199             pa_log(__FILE__": read() failed: %s", strerror(errno));
 200         return;
 201     }
 202
 203     assert(r <= (ssize_t) memchunk.memblock->length);
 204     memchunk.length = memchunk.memblock->length = r;
 205     memchunk.index = 0;
 206
 207     pa_source_post(u->source, &memchunk);
 208     pa_memblock_unref(memchunk.memblock);
 209
 210     u->read_bytes += r;
 211 }
 212
 213 static void io_callback(pa_iochannel *io, void*userdata) {
 214     struct userdata *u = userdata;
 215     assert(u);
 216     do_write(u);
 217     do_read(u);
 218 }
 219
 220 static void sig_callback(pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata) {
 221     struct userdata *u = userdata;
 222     pa_cvolume old_vol;
 223
 224     assert(u && u->sink && u->sink->get_hw_volume);
 225
 226     do_write(u);
 227
 228     memcpy(&old_vol, &u->sink->hw_volume, sizeof(pa_cvolume));
 229     if (u->sink->get_hw_volume(u->sink) < 0)
 230         return;
 231     if (memcmp(&old_vol, &u->sink->hw_volume, sizeof(pa_cvolume)) != 0) {
 232         pa_subscription_post(u->sink->core,
 233             PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE,
 234             u->sink->index);
 235     }
 236 }
 237
 238 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
 239     pa_usec_t r = 0;
 240     audio_info_t info;
 241     int err;
 242     struct userdata *u = s->userdata;
 243     assert(s && u && u->sink);
 244
 245     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 246     assert(err >= 0);
 247
 248     r += pa_bytes_to_usec(u->written_bytes, &s->sample_spec);
 249     r -= pa_bytes_to_usec(info.play.samples * u->sample_size, &s->sample_spec);
 250
 251     if (u->memchunk.memblock)
 252         r += pa_bytes_to_usec(u->memchunk.length, &s->sample_spec);
 253
 254     return r;
 255 }
 256
 257 static pa_usec_t source_get_latency_cb(pa_source *s) {
 258     pa_usec_t r = 0;
 259     struct userdata *u = s->userdata;
 260     audio_info_t info;
 261     int err;
 262     assert(s && u && u->source);
 263
 264     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 265     assert(err >= 0);
 266
 267     r += pa_bytes_to_usec(info.record.samples * u->sample_size, &s->sample_spec);
 268     r -= pa_bytes_to_usec(u->read_bytes, &s->sample_spec);
 269
 270     return r;
 271 }
 272
 273 static int sink_get_hw_volume_cb(pa_sink *s) {
 274     struct userdata *u = s->userdata;
 275     audio_info_t info;
 276     int err;
 277
 278     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 279     assert(err >= 0);
 280
 281     pa_cvolume_set(&s->hw_volume, s->hw_volume.channels,
 282         info.play.gain * PA_VOLUME_NORM / AUDIO_MAX_GAIN);
 283
 284     return 0;
 285 }
 286
 287 static int sink_set_hw_volume_cb(pa_sink *s) {
 288     struct userdata *u = s->userdata;
 289     audio_info_t info;
 290
 291     AUDIO_INITINFO(&info);
 292
 293     info.play.gain = pa_cvolume_avg(&s->hw_volume) * AUDIO_MAX_GAIN / PA_VOLUME_NORM;
 294     assert(info.play.gain <= AUDIO_MAX_GAIN);
 295
 296     if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
 297         if (errno == EINVAL)
 298             pa_log(__FILE__": AUDIO_SETINFO: Unsupported volume.");
 299         else
 300             pa_log(__FILE__": AUDIO_SETINFO: %s", strerror(errno));
 301         return -1;
 302     }
 303
 304     return 0;
 305 }
 306
 307 static int sink_get_hw_mute_cb(pa_sink *s) {
 308     struct userdata *u = s->userdata;
 309     audio_info_t info;
 310     int err;
 311
 312     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 313     assert(err >= 0);
 314
 315     s->hw_muted = !!info.output_muted;
 316
 317     return 0;
 318 }
 319
 320 static int sink_set_hw_mute_cb(pa_sink *s) {
 321     struct userdata *u = s->userdata;
 322     audio_info_t info;
 323
 324     AUDIO_INITINFO(&info);
 325
 326     info.output_muted = !!s->hw_muted;
 327
 328     if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
 329         pa_log(__FILE__": AUDIO_SETINFO: %s", strerror(errno));
 330         return -1;
 331     }
 332
 333     return 0;
 334 }
 335
 336 static int source_get_hw_volume_cb(pa_source *s) {
 337     struct userdata *u = s->userdata;
 338     audio_info_t info;
 339     int err;
 340
 341     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 342     assert(err >= 0);
 343
 344     pa_cvolume_set(&s->hw_volume, s->hw_volume.channels,
 345         info.record.gain * PA_VOLUME_NORM / AUDIO_MAX_GAIN);
 346
 347     return 0;
 348 }
 349
 350 static int source_set_hw_volume_cb(pa_source *s) {
 351     struct userdata *u = s->userdata;
 352     audio_info_t info;
 353
 354     AUDIO_INITINFO(&info);
 355
 356     info.record.gain = pa_cvolume_avg(&s->hw_volume) * AUDIO_MAX_GAIN / PA_VOLUME_NORM;
 357     assert(info.record.gain <= AUDIO_MAX_GAIN);
 358
 359     if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
 360         if (errno == EINVAL)
 361             pa_log(__FILE__": AUDIO_SETINFO: Unsupported volume.");
 362         else
 363             pa_log(__FILE__": AUDIO_SETINFO: %s", strerror(errno));
 364         return -1;
 365     }
 366
 367     return 0;
 368 }
 369
 370 static int pa_solaris_auto_format(int fd, int mode, pa_sample_spec *ss) {
 371     audio_info_t info;
 372
 373     AUDIO_INITINFO(&info);
 374
 375     if (mode != O_RDONLY) {
 376         info.play.sample_rate = ss->rate;
 377         info.play.channels = ss->channels;
 378         switch (ss->format) {
 379         case PA_SAMPLE_U8:
 380             info.play.precision = 8;
 381             info.play.encoding = AUDIO_ENCODING_LINEAR;
 382             break;
 383         case PA_SAMPLE_ALAW:
 384             info.play.precision = 8;
 385             info.play.encoding = AUDIO_ENCODING_ALAW;
 386             break;
 387         case PA_SAMPLE_ULAW:
 388             info.play.precision = 8;
 389             info.play.encoding = AUDIO_ENCODING_ULAW;
 390             break;
 391         case PA_SAMPLE_S16NE:
 392             info.play.precision = 16;
 393             info.play.encoding = AUDIO_ENCODING_LINEAR;
 394             break;
 395         default:
 396             return -1;
 397         }
 398     }
 399
 400     if (mode != O_WRONLY) {
 401         info.record.sample_rate = ss->rate;
 402         info.record.channels = ss->channels;
 403         switch (ss->format) {
 404         case PA_SAMPLE_U8:
 405             info.record.precision = 8;
 406             info.record.encoding = AUDIO_ENCODING_LINEAR;
 407             break;
 408         case PA_SAMPLE_ALAW:
 409             info.record.precision = 8;
 410             info.record.encoding = AUDIO_ENCODING_ALAW;
 411             break;
 412         case PA_SAMPLE_ULAW:
 413             info.record.precision = 8;
 414             info.record.encoding = AUDIO_ENCODING_ULAW;
 415             break;
 416         case PA_SAMPLE_S16NE:
 417             info.record.precision = 16;
 418             info.record.encoding = AUDIO_ENCODING_LINEAR;
 419             break;
 420         default:
 421             return -1;
 422         }
 423     }
 424
 425     if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
 426         if (errno == EINVAL)
 427             pa_log(__FILE__": AUDIO_SETINFO: Unsupported sample format.");
 428         else
 429             pa_log(__FILE__": AUDIO_SETINFO: %s", strerror(errno));
 430         return -1;
 431     }
 432
 433     return 0;
 434 }
 435
 436 static int pa_solaris_set_buffer(int fd, int buffer_size) {
 437     audio_info_t info;
 438
 439     AUDIO_INITINFO(&info);
 440
 441     info.record.buffer_size = buffer_size;
 442
 443     if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
 444         if (errno == EINVAL)
 445             pa_log(__FILE__": AUDIO_SETINFO: Unsupported buffer size.");
 446         else
 447             pa_log(__FILE__": AUDIO_SETINFO: %s", strerror(errno));
 448         return -1;
 449     }
 450
 451     return 0;
 452 }
 453
 454 int pa__init(pa_core *c, pa_module*m) {
 455     struct userdata *u = NULL;
 456     const char *p;
 457     int fd = -1;
 458     int buffer_size;
 459     int mode;
 460     int record = 1, playback = 1;
 461     pa_sample_spec ss;
 462     pa_modargs *ma = NULL;
 463     assert(c && m);
 464
 465     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 466         pa_log(__FILE__": failed to parse module arguments.");
 467         goto fail;
 468     }
 469
 470     if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
 471         pa_log(__FILE__": record= and playback= expect numeric argument.");
 472         goto fail;
 473     }
 474
 475     if (!playback && !record) {
 476         pa_log(__FILE__": neither playback nor record enabled for device.");
 477         goto fail;
 478     }
 479
 480     mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
 481
 482     buffer_size = 16384;
 483     if (pa_modargs_get_value_s32(ma, "buffer_size", &buffer_size) < 0) {
 484         pa_log(__FILE__": failed to parse buffer size argument");
 485         goto fail;
 486     }
 487
 488     ss = c->default_sample_spec;
 489     if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
 490         pa_log(__FILE__": failed to parse sample specification");
 491         goto fail;
 492     }
 493
 494     if ((fd = open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), mode | O_NONBLOCK)) < 0)
 495         goto fail;
 496
 497     pa_log_info(__FILE__": device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
 498
 499     if (pa_solaris_auto_format(fd, mode, &ss) < 0)
 500         goto fail;
 501
 502     if ((mode != O_WRONLY) && (buffer_size >= 1))
 503         if (pa_solaris_set_buffer(fd, buffer_size) < 0)
 504             goto fail;
 505
 506     u = pa_xmalloc(sizeof(struct userdata));
 507     u->core = c;
 508
 509     if (mode != O_WRONLY) {
 510         u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, NULL);
 511         assert(u->source);
 512         u->source->userdata = u;
 513         u->source->get_latency = source_get_latency_cb;
 514         u->source->get_hw_volume = source_get_hw_volume_cb;
 515         u->source->set_hw_volume = source_set_hw_volume_cb;
 516         pa_source_set_owner(u->source, m);
 517         u->source->description = pa_sprintf_malloc("Solaris PCM on '%s'", p);
 518     } else
 519         u->source = NULL;
 520
 521     if (mode != O_RDONLY) {
 522         u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, NULL);
 523         assert(u->sink);
 524         u->sink->get_latency = sink_get_latency_cb;
 525         u->sink->get_hw_volume = sink_get_hw_volume_cb;
 526         u->sink->set_hw_volume = sink_set_hw_volume_cb;
 527         u->sink->get_hw_mute = sink_get_hw_mute_cb;
 528         u->sink->set_hw_mute = sink_set_hw_mute_cb;
 529         u->sink->userdata = u;
 530         pa_sink_set_owner(u->sink, m);
 531         u->sink->description = pa_sprintf_malloc("Solaris PCM on '%s'", p);
 532     } else
 533         u->sink = NULL;
 534
 535     assert(u->source || u->sink);
 536
 537     u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : 0);
 538     assert(u->io);
 539     pa_iochannel_set_callback(u->io, io_callback, u);
 540     u->fd = fd;
 541
 542     u->memchunk.memblock = NULL;
 543     u->memchunk.length = 0;
 544     u->sample_size = pa_frame_size(&ss);
 545     u->buffer_size = buffer_size;
 546
 547     u->silence.memblock = pa_memblock_new(u->silence.length = CHUNK_SIZE, u->core->memblock_stat);
 548     assert(u->silence.memblock);
 549     pa_silence_memblock(u->silence.memblock, &ss);
 550     u->silence.index = 0;
 551
 552     u->written_bytes = 0;
 553     u->read_bytes = 0;
 554
 555     u->module = m;
 556     m->userdata = u;
 557
 558     u->sig = pa_signal_new(SIGPOLL, sig_callback, u);
 559     assert(u->sig);
 560     ioctl(u->fd, I_SETSIG, S_MSG);
 561
 562     pa_modargs_free(ma);
 563
 564     /* Read mixer settings */
 565     if (u->source)
 566         source_get_hw_volume_cb(u->source);
 567     if (u->sink) {
 568         sink_get_hw_volume_cb(u->sink);
 569         sink_get_hw_mute_cb(u->sink);
 570     }
 571
 572     return 0;
 573
 574 fail:
 575     if (fd >= 0)
 576         close(fd);
 577
 578     if (ma)
 579         pa_modargs_free(ma);
 580
 581     return -1;
 582 }
 583
 584 void pa__done(pa_core *c, pa_module*m) {
 585     struct userdata *u;
 586     assert(c && m);
 587
 588     if (!(u = m->userdata))
 589         return;
 590
 591     ioctl(u->fd, I_SETSIG, 0);
 592     pa_signal_free(u->sig);
 593
 594     if (u->memchunk.memblock)
 595         pa_memblock_unref(u->memchunk.memblock);
 596     if (u->silence.memblock)
 597         pa_memblock_unref(u->silence.memblock);
 598
 599     if (u->sink) {
 600         pa_sink_disconnect(u->sink);
 601         pa_sink_unref(u->sink);
 602     }
 603
 604     if (u->source) {
 605         pa_source_disconnect(u->source);
 606         pa_source_unref(u->source);
 607     }
 608
 609     pa_iochannel_free(u->io);
 610     pa_xfree(u);
 611 }