code.delx.au - pulseaudio/blob - src/pulsecore/sink.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 <assert.h>
  28 #include <string.h>
  29 #include <stdio.h>
  30
  31 #include <pulse/introspect.h>
  32 #include <pulse/utf8.h>
  33 #include <pulse/xmalloc.h>
  34
  35 #include <pulsecore/sink-input.h>
  36 #include <pulsecore/namereg.h>
  37 #include <pulsecore/core-util.h>
  38 #include <pulsecore/sample-util.h>
  39 #include <pulsecore/core-subscribe.h>
  40 #include <pulsecore/log.h>
  41
  42 #include "sink.h"
  43
  44 #define MAX_MIX_CHANNELS 32
  45
  46 #define CHECK_VALIDITY_RETURN_NULL(condition) \
  47 do {\
  48 if (!(condition)) \
  49     return NULL; \
  50 } while (0)
  51
  52 pa_sink* pa_sink_new(
  53         pa_core *core,
  54         const char *driver,
  55         const char *name,
  56         int fail,
  57         const pa_sample_spec *spec,
  58         const pa_channel_map *map) {
  59
  60     pa_sink *s;
  61     char *n = NULL;
  62     char st[256];
  63     int r;
  64     pa_channel_map tmap;
  65
  66     assert(core);
  67     assert(name);
  68     assert(spec);
  69
  70     CHECK_VALIDITY_RETURN_NULL(pa_sample_spec_valid(spec));
  71
  72     if (!map)
  73         map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT);
  74
  75     CHECK_VALIDITY_RETURN_NULL(map && pa_channel_map_valid(map));
  76     CHECK_VALIDITY_RETURN_NULL(map->channels == spec->channels);
  77     CHECK_VALIDITY_RETURN_NULL(!driver || pa_utf8_valid(driver));
  78     CHECK_VALIDITY_RETURN_NULL(pa_utf8_valid(name) && *name);
  79
  80     s = pa_xnew(pa_sink, 1);
  81
  82     if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SINK, s, fail))) {
  83         pa_xfree(s);
  84         return NULL;
  85     }
  86
  87     s->ref = 1;
  88     s->core = core;
  89     s->state = PA_SINK_RUNNING;
  90     s->name = pa_xstrdup(name);
  91     s->description = NULL;
  92     s->driver = pa_xstrdup(driver);
  93     s->owner = NULL;
  94
  95     s->sample_spec = *spec;
  96     s->channel_map = *map;
  97
  98     s->inputs = pa_idxset_new(NULL, NULL);
  99
 100     pa_cvolume_reset(&s->sw_volume, spec->channels);
 101     pa_cvolume_reset(&s->hw_volume, spec->channels);
 102     s->sw_muted = 0;
 103     s->hw_muted = 0;
 104
 105     s->is_hardware = 0;
 106
 107     s->get_latency = NULL;
 108     s->notify = NULL;
 109     s->set_hw_volume = NULL;
 110     s->get_hw_volume = NULL;
 111     s->set_hw_mute = NULL;
 112     s->get_hw_mute = NULL;
 113     s->userdata = NULL;
 114
 115     r = pa_idxset_put(core->sinks, s, &s->index);
 116     assert(s->index != PA_IDXSET_INVALID && r >= 0);
 117
 118     pa_sample_spec_snprint(st, sizeof(st), spec);
 119     pa_log_info(__FILE__": created %u \"%s\" with sample spec \"%s\"", s->index, s->name, st);
 120
 121     n = pa_sprintf_malloc("%s.monitor", name);
 122
 123     if (!(s->monitor_source = pa_source_new(core, driver, n, 0, spec, map)))
 124         pa_log_warn(__FILE__": failed to create monitor source.");
 125     else {
 126         char *d;
 127         s->monitor_source->monitor_of = s;
 128         d = pa_sprintf_malloc("Monitor Source of %s", s->name);
 129         pa_source_set_description(s->monitor_source, d);
 130         pa_xfree(d);
 131     }
 132
 133     pa_xfree(n);
 134
 135     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_NEW, s->index);
 136
 137     return s;
 138 }
 139
 140 void pa_sink_disconnect(pa_sink* s) {
 141     pa_sink_input *i, *j = NULL;
 142
 143     assert(s);
 144     assert(s->state == PA_SINK_RUNNING);
 145
 146     s->state = PA_SINK_DISCONNECTED;
 147     pa_namereg_unregister(s->core, s->name);
 148
 149     pa_hook_fire(&s->core->hook_sink_disconnect, s);
 150
 151     while ((i = pa_idxset_first(s->inputs, NULL))) {
 152         assert(i != j);
 153         pa_sink_input_kill(i);
 154         j = i;
 155     }
 156
 157     if (s->monitor_source)
 158         pa_source_disconnect(s->monitor_source);
 159
 160     pa_idxset_remove_by_data(s->core->sinks, s, NULL);
 161
 162     s->get_latency = NULL;
 163     s->notify = NULL;
 164     s->get_hw_volume = NULL;
 165     s->set_hw_volume = NULL;
 166     s->set_hw_mute = NULL;
 167     s->get_hw_mute = NULL;
 168
 169     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
 170 }
 171
 172 static void sink_free(pa_sink *s) {
 173     assert(s);
 174     assert(!s->ref);
 175
 176     if (s->state != PA_SINK_DISCONNECTED)
 177         pa_sink_disconnect(s);
 178
 179     pa_log_info(__FILE__": freed %u \"%s\"", s->index, s->name);
 180
 181     if (s->monitor_source) {
 182         pa_source_unref(s->monitor_source);
 183         s->monitor_source = NULL;
 184     }
 185
 186     pa_idxset_free(s->inputs, NULL, NULL);
 187
 188     pa_xfree(s->name);
 189     pa_xfree(s->description);
 190     pa_xfree(s->driver);
 191     pa_xfree(s);
 192 }
 193
 194 void pa_sink_unref(pa_sink*s) {
 195     assert(s);
 196     assert(s->ref >= 1);
 197
 198     if (!(--s->ref))
 199         sink_free(s);
 200 }
 201
 202 pa_sink* pa_sink_ref(pa_sink *s) {
 203     assert(s);
 204     assert(s->ref >= 1);
 205
 206     s->ref++;
 207     return s;
 208 }
 209
 210 void pa_sink_notify(pa_sink*s) {
 211     assert(s);
 212     assert(s->ref >= 1);
 213
 214     if (s->notify)
 215         s->notify(s);
 216 }
 217
 218 static unsigned fill_mix_info(pa_sink *s, pa_mix_info *info, unsigned maxinfo) {
 219     uint32_t idx = PA_IDXSET_INVALID;
 220     pa_sink_input *i;
 221     unsigned n = 0;
 222
 223     assert(s);
 224     assert(s->ref >= 1);
 225     assert(info);
 226
 227     for (i = pa_idxset_first(s->inputs, &idx); maxinfo > 0 && i; i = pa_idxset_next(s->inputs, &idx)) {
 228         /* Increase ref counter, to make sure that this input doesn't
 229          * vanish while we still need it */
 230         pa_sink_input_ref(i);
 231
 232         if (pa_sink_input_peek(i, &info->chunk, &info->volume) < 0) {
 233             pa_sink_input_unref(i);
 234             continue;
 235         }
 236
 237         info->userdata = i;
 238
 239         assert(info->chunk.memblock);
 240         assert(info->chunk.memblock->data);
 241         assert(info->chunk.length);
 242
 243         info++;
 244         maxinfo--;
 245         n++;
 246     }
 247
 248     return n;
 249 }
 250
 251 static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned maxinfo, size_t length) {
 252     assert(s);
 253     assert(s->ref >= 1);
 254     assert(info);
 255
 256     for (; maxinfo > 0; maxinfo--, info++) {
 257         pa_sink_input *i = info->userdata;
 258
 259         assert(i);
 260         assert(info->chunk.memblock);
 261
 262         /* Drop read data */
 263         pa_sink_input_drop(i, &info->chunk, length);
 264         pa_memblock_unref(info->chunk.memblock);
 265
 266         /* Decrease ref counter */
 267         pa_sink_input_unref(i);
 268         info->userdata = NULL;
 269     }
 270 }
 271
 272 int pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) {
 273     pa_mix_info info[MAX_MIX_CHANNELS];
 274     unsigned n;
 275     int r = -1;
 276
 277     assert(s);
 278     assert(s->ref >= 1);
 279     assert(length);
 280     assert(result);
 281
 282     pa_sink_ref(s);
 283
 284     n = fill_mix_info(s, info, MAX_MIX_CHANNELS);
 285
 286     if (n <= 0)
 287         goto finish;
 288
 289     if (n == 1) {
 290         pa_cvolume volume;
 291
 292         *result = info[0].chunk;
 293         pa_memblock_ref(result->memblock);
 294
 295         if (result->length > length)
 296             result->length = length;
 297
 298         pa_sw_cvolume_multiply(&volume, &s->sw_volume, &info[0].volume);
 299
 300         if (s->sw_muted || !pa_cvolume_is_norm(&volume)) {
 301             pa_memchunk_make_writable(result, s->core->memblock_stat, 0);
 302             if (s->sw_muted)
 303                 pa_silence_memchunk(result, &s->sample_spec);
 304             else
 305                 pa_volume_memchunk(result, &s->sample_spec, &volume);
 306         }
 307     } else {
 308         result->memblock = pa_memblock_new(length, s->core->memblock_stat);
 309         assert(result->memblock);
 310
 311 /*          pa_log("mixing %i", n);  */
 312
 313         result->length = pa_mix(info, n, result->memblock->data, length,
 314             &s->sample_spec, &s->sw_volume, s->sw_muted);
 315         result->index = 0;
 316     }
 317
 318     inputs_drop(s, info, n, result->length);
 319
 320     if (s->monitor_source)
 321         pa_source_post(s->monitor_source, result);
 322
 323     r = 0;
 324
 325 finish:
 326     pa_sink_unref(s);
 327
 328     return r;
 329 }
 330
 331 int pa_sink_render_into(pa_sink*s, pa_memchunk *target) {
 332     pa_mix_info info[MAX_MIX_CHANNELS];
 333     unsigned n;
 334     int r = -1;
 335
 336     assert(s);
 337     assert(s->ref >= 1);
 338     assert(target);
 339     assert(target->memblock);
 340     assert(target->length);
 341     assert(target->memblock->data);
 342
 343     pa_sink_ref(s);
 344
 345     n = fill_mix_info(s, info, MAX_MIX_CHANNELS);
 346
 347     if (n <= 0)
 348         goto finish;
 349
 350     if (n == 1) {
 351         pa_cvolume volume;
 352
 353         if (target->length > info[0].chunk.length)
 354             target->length = info[0].chunk.length;
 355
 356         memcpy((uint8_t*) target->memblock->data + target->index,
 357                (uint8_t*) info[0].chunk.memblock->data + info[0].chunk.index,
 358                target->length);
 359
 360         pa_sw_cvolume_multiply(&volume, &s->sw_volume, &info[0].volume);
 361
 362         if (s->sw_muted)
 363             pa_silence_memchunk(target, &s->sample_spec);
 364         else if (!pa_cvolume_is_norm(&volume))
 365             pa_volume_memchunk(target, &s->sample_spec, &volume);
 366     } else
 367         target->length = pa_mix(info, n,
 368                                 (uint8_t*) target->memblock->data + target->index,
 369                                 target->length,
 370                                 &s->sample_spec,
 371                                 &s->sw_volume,
 372                                 s->sw_muted);
 373
 374     inputs_drop(s, info, n, target->length);
 375
 376     if (s->monitor_source)
 377         pa_source_post(s->monitor_source, target);
 378
 379     r = 0;
 380
 381 finish:
 382     pa_sink_unref(s);
 383
 384     return r;
 385 }
 386
 387 void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) {
 388     pa_memchunk chunk;
 389     size_t l, d;
 390
 391     assert(s);
 392     assert(s->ref >= 1);
 393     assert(target);
 394     assert(target->memblock);
 395     assert(target->length);
 396     assert(target->memblock->data);
 397
 398     pa_sink_ref(s);
 399
 400     l = target->length;
 401     d = 0;
 402     while (l > 0) {
 403         chunk = *target;
 404         chunk.index += d;
 405         chunk.length -= d;
 406
 407         if (pa_sink_render_into(s, &chunk) < 0)
 408             break;
 409
 410         d += chunk.length;
 411         l -= chunk.length;
 412     }
 413
 414     if (l > 0) {
 415         chunk = *target;
 416         chunk.index += d;
 417         chunk.length -= d;
 418         pa_silence_memchunk(&chunk, &s->sample_spec);
 419     }
 420
 421     pa_sink_unref(s);
 422 }
 423
 424 void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) {
 425     assert(s);
 426     assert(s->ref >= 1);
 427     assert(length);
 428     assert(result);
 429
 430     /*** This needs optimization ***/
 431
 432     result->memblock = pa_memblock_new(result->length = length, s->core->memblock_stat);
 433     result->index = 0;
 434
 435     pa_sink_render_into_full(s, result);
 436 }
 437
 438 pa_usec_t pa_sink_get_latency(pa_sink *s) {
 439     assert(s);
 440     assert(s->ref >= 1);
 441
 442     if (!s->get_latency)
 443         return 0;
 444
 445     return s->get_latency(s);
 446 }
 447
 448 void pa_sink_set_owner(pa_sink *s, pa_module *m) {
 449     assert(s);
 450     assert(s->ref >= 1);
 451
 452     if (s->owner == m)
 453         return;
 454
 455     s->owner = m;
 456
 457     if (s->monitor_source)
 458         pa_source_set_owner(s->monitor_source, m);
 459
 460     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 461 }
 462
 463 void pa_sink_set_volume(pa_sink *s, pa_mixer_t m, const pa_cvolume *volume) {
 464     pa_cvolume *v;
 465
 466     assert(s);
 467     assert(s->ref >= 1);
 468     assert(volume);
 469
 470     if (m == PA_MIXER_HARDWARE && s->set_hw_volume)
 471         v = &s->hw_volume;
 472     else
 473         v = &s->sw_volume;
 474
 475     if (pa_cvolume_equal(v, volume))
 476         return;
 477
 478     *v = *volume;
 479
 480     if (v == &s->hw_volume)
 481         if (s->set_hw_volume(s) < 0)
 482             s->sw_volume =  *volume;
 483
 484     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 485 }
 486
 487 const pa_cvolume *pa_sink_get_volume(pa_sink *s, pa_mixer_t m) {
 488     assert(s);
 489     assert(s->ref >= 1);
 490
 491     if (m == PA_MIXER_HARDWARE && s->set_hw_volume) {
 492
 493         if (s->get_hw_volume)
 494             s->get_hw_volume(s);
 495
 496         return &s->hw_volume;
 497     } else
 498         return &s->sw_volume;
 499 }
 500
 501 void pa_sink_set_mute(pa_sink *s, pa_mixer_t m, int mute) {
 502     int *t;
 503
 504     assert(s);
 505     assert(s->ref >= 1);
 506
 507     if (m == PA_MIXER_HARDWARE && s->set_hw_mute)
 508         t = &s->hw_muted;
 509     else
 510         t = &s->sw_muted;
 511
 512     if (!!*t == !!mute)
 513         return;
 514
 515     *t = !!mute;
 516
 517     if (t == &s->hw_muted)
 518         if (s->set_hw_mute(s) < 0)
 519             s->sw_muted = !!mute;
 520
 521     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 522 }
 523
 524 int pa_sink_get_mute(pa_sink *s, pa_mixer_t m) {
 525     assert(s);
 526     assert(s->ref >= 1);
 527
 528     if (m == PA_MIXER_HARDWARE && s->set_hw_mute) {
 529
 530         if (s->get_hw_mute)
 531             s->get_hw_mute(s);
 532
 533         return s->hw_muted;
 534     } else
 535         return s->sw_muted;
 536 }
 537
 538 void pa_sink_set_description(pa_sink *s, const char *description) {
 539     assert(s);
 540     assert(s->ref >= 1);
 541
 542     if (!description && !s->description)
 543         return;
 544
 545     if (description && s->description && !strcmp(description, s->description))
 546         return;
 547
 548     pa_xfree(s->description);
 549     s->description = pa_xstrdup(description);
 550
 551     if (s->monitor_source) {
 552         char *n;
 553
 554         n = pa_sprintf_malloc("Monitor Source of %s", s->description? s->description : s->name);
 555         pa_source_set_description(s->monitor_source, n);
 556         pa_xfree(n);
 557     }
 558
 559     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 560 }
 561
 562 unsigned pa_sink_used_by(pa_sink *s) {
 563     unsigned ret;
 564
 565     assert(s);
 566     assert(s->ref >= 1);
 567
 568     ret = pa_idxset_size(s->inputs);
 569
 570     if (s->monitor_source)
 571         ret += pa_source_used_by(s->monitor_source);
 572
 573     return ret;
 574 }