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\n", 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\n", 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\n", 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 void sig_callback(pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata) {
 221     struct userdata *u = userdata;
 222     assert(u);
 223     do_write(u);
 224 }
 225
 226 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
 227     pa_usec_t r = 0;
 228     audio_info_t info;
 229     int err;
 230     struct userdata *u = s->userdata;
 231     assert(s && u && u->sink);
 232
 233     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 234     assert(err >= 0);
 235
 236     r += pa_bytes_to_usec(u->written_bytes, &s->sample_spec);
 237     r -= pa_bytes_to_usec(info.play.samples * u->sample_size, &s->sample_spec);
 238
 239     if (u->memchunk.memblock)
 240         r += pa_bytes_to_usec(u->memchunk.length, &s->sample_spec);
 241
 242     return r;
 243 }
 244
 245 static pa_usec_t source_get_latency_cb(pa_source *s) {
 246     pa_usec_t r = 0;
 247     struct userdata *u = s->userdata;
 248     audio_info_t info;
 249     int err;
 250     assert(s && u && u->source);
 251
 252     err = ioctl(u->fd, AUDIO_GETINFO, &info);
 253     assert(err >= 0);
 254
 255     r += pa_bytes_to_usec(info.record.samples * u->sample_size, &s->sample_spec);
 256     r -= pa_bytes_to_usec(u->read_bytes, &s->sample_spec);
 257
 258     return r;
 259 }
 260
 261 static int pa_solaris_auto_format(int fd, int mode, pa_sample_spec *ss) {
 262     audio_info_t info;
 263
 264     AUDIO_INITINFO(&info);
 265
 266     if (mode != O_RDONLY) {
 267         info.play.sample_rate = ss->rate;
 268         info.play.channels = ss->channels;
 269         switch (ss->format) {
 270         case PA_SAMPLE_U8:
 271             info.play.precision = 8;
 272             info.play.encoding = AUDIO_ENCODING_LINEAR;
 273             break;
 274         case PA_SAMPLE_ALAW:
 275             info.play.precision = 8;
 276             info.play.encoding = AUDIO_ENCODING_ALAW;
 277             break;
 278         case PA_SAMPLE_ULAW:
 279             info.play.precision = 8;
 280             info.play.encoding = AUDIO_ENCODING_ULAW;
 281             break;
 282         case PA_SAMPLE_S16NE:
 283             info.play.precision = 16;
 284             info.play.encoding = AUDIO_ENCODING_LINEAR;
 285             break;
 286         default:
 287             return -1;
 288         }
 289     }
 290
 291     if (mode != O_WRONLY) {
 292         info.record.sample_rate = ss->rate;
 293         info.record.channels = ss->channels;
 294         switch (ss->format) {
 295         case PA_SAMPLE_U8:
 296             info.record.precision = 8;
 297             info.record.encoding = AUDIO_ENCODING_LINEAR;
 298             break;
 299         case PA_SAMPLE_ALAW:
 300             info.record.precision = 8;
 301             info.record.encoding = AUDIO_ENCODING_ALAW;
 302             break;
 303         case PA_SAMPLE_ULAW:
 304             info.record.precision = 8;
 305             info.record.encoding = AUDIO_ENCODING_ULAW;
 306             break;
 307         case PA_SAMPLE_S16NE:
 308             info.record.precision = 16;
 309             info.record.encoding = AUDIO_ENCODING_LINEAR;
 310             break;
 311         default:
 312             return -1;
 313         }
 314     }
 315
 316     if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
 317         if (errno == EINVAL)
 318             pa_log(__FILE__": AUDIO_SETINFO: Unsupported sample format.\n");
 319         else
 320             pa_log(__FILE__": AUDIO_SETINFO: %s\n", strerror(errno));
 321         return -1;
 322     }
 323
 324     return 0;
 325 }
 326
 327 static int pa_solaris_set_buffer(int fd, int buffer_size) {
 328     audio_info_t info;
 329
 330     AUDIO_INITINFO(&info);
 331
 332     info.record.buffer_size = buffer_size;
 333
 334     if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
 335         if (errno == EINVAL)
 336             pa_log(__FILE__": AUDIO_SETINFO: Unsupported buffer size.\n");
 337         else
 338             pa_log(__FILE__": AUDIO_SETINFO: %s\n", strerror(errno));
 339         return -1;
 340     }
 341
 342     return 0;
 343 }
 344
 345 int pa__init(pa_core *c, pa_module*m) {
 346     struct userdata *u = NULL;
 347     const char *p;
 348     int fd = -1;
 349     int buffer_size;
 350     int mode;
 351     int record = 1, playback = 1;
 352     pa_sample_spec ss;
 353     pa_modargs *ma = NULL;
 354     assert(c && m);
 355
 356     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 357         pa_log(__FILE__": failed to parse module arguments.\n");
 358         goto fail;
 359     }
 360
 361     if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
 362         pa_log(__FILE__": record= and playback= expect numeric argument.\n");
 363         goto fail;
 364     }
 365
 366     if (!playback && !record) {
 367         pa_log(__FILE__": neither playback nor record enabled for device.\n");
 368         goto fail;
 369     }
 370
 371     mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
 372
 373     buffer_size = 16384;
 374     if (pa_modargs_get_value_s32(ma, "buffer_size", &buffer_size) < 0) {
 375         pa_log(__FILE__": failed to parse buffer size argument\n");
 376         goto fail;
 377     }
 378
 379     ss = c->default_sample_spec;
 380     if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
 381         pa_log(__FILE__": failed to parse sample specification\n");
 382         goto fail;
 383     }
 384
 385     if ((fd = open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), mode | O_NONBLOCK)) < 0)
 386         goto fail;
 387
 388     pa_log_info(__FILE__": device opened in %s mode.\n", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
 389
 390     if (pa_solaris_auto_format(fd, mode, &ss) < 0)
 391         goto fail;
 392
 393     if ((mode != O_WRONLY) && (buffer_size >= 1))
 394         if (pa_solaris_set_buffer(fd, buffer_size) < 0)
 395             goto fail;
 396
 397     u = pa_xmalloc(sizeof(struct userdata));
 398     u->core = c;
 399
 400     if (mode != O_WRONLY) {
 401         u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, NULL);
 402         assert(u->source);
 403         u->source->userdata = u;
 404         u->source->get_latency = source_get_latency_cb;
 405         pa_source_set_owner(u->source, m);
 406         u->source->description = pa_sprintf_malloc("Solaris PCM on '%s'", p);
 407     } else
 408         u->source = NULL;
 409
 410     if (mode != O_RDONLY) {
 411         u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, NULL);
 412         assert(u->sink);
 413         u->sink->get_latency = sink_get_latency_cb;
 414         u->sink->userdata = u;
 415         pa_sink_set_owner(u->sink, m);
 416         u->sink->description = pa_sprintf_malloc("Solaris PCM on '%s'", p);
 417     } else
 418         u->sink = NULL;
 419
 420     assert(u->source || u->sink);
 421
 422     u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : 0);
 423     assert(u->io);
 424     pa_iochannel_set_callback(u->io, io_callback, u);
 425     u->fd = fd;
 426
 427     u->memchunk.memblock = NULL;
 428     u->memchunk.length = 0;
 429     u->sample_size = pa_frame_size(&ss);
 430     u->buffer_size = buffer_size;
 431
 432     u->silence.memblock = pa_memblock_new(u->silence.length = CHUNK_SIZE, u->core->memblock_stat);
 433     assert(u->silence.memblock);
 434     pa_silence_memblock(u->silence.memblock, &ss);
 435     u->silence.index = 0;
 436
 437     u->written_bytes = 0;
 438     u->read_bytes = 0;
 439
 440     u->module = m;
 441     m->userdata = u;
 442
 443     u->sig = pa_signal_new(SIGPOLL, sig_callback, u);
 444     assert(u->sig);
 445     ioctl(u->fd, I_SETSIG, S_MSG);
 446
 447     pa_modargs_free(ma);
 448
 449     return 0;
 450
 451 fail:
 452     if (fd >= 0)
 453         close(fd);
 454
 455     if (ma)
 456         pa_modargs_free(ma);
 457
 458     return -1;
 459 }
 460
 461 void pa__done(pa_core *c, pa_module*m) {
 462     struct userdata *u;
 463     assert(c && m);
 464
 465     if (!(u = m->userdata))
 466         return;
 467
 468     ioctl(u->fd, I_SETSIG, 0);
 469     pa_signal_free(u->sig);
 470
 471     if (u->memchunk.memblock)
 472         pa_memblock_unref(u->memchunk.memblock);
 473     if (u->silence.memblock)
 474         pa_memblock_unref(u->silence.memblock);
 475
 476     if (u->sink) {
 477         pa_sink_disconnect(u->sink);
 478         pa_sink_unref(u->sink);
 479     }
 480
 481     if (u->source) {
 482         pa_source_disconnect(u->source);
 483         pa_source_unref(u->source);
 484     }
 485
 486     pa_iochannel_free(u->io);
 487     pa_xfree(u);
 488 }