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