code.delx.au - pulseaudio/blob - src/pulsecore/source-output.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include <pulse/utf8.h>
  33 #include <pulse/xmalloc.h>
  34
  35 #include <pulsecore/sample-util.h>
  36 #include <pulsecore/core-subscribe.h>
  37 #include <pulsecore/log.h>
  38 #include <pulsecore/namereg.h>
  39 #include <pulsecore/core-util.h>
  40
  41 #include "source-output.h"
  42
  43 #define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
  44
  45 static PA_DEFINE_CHECK_TYPE(pa_source_output, pa_msgobject);
  46
  47 static void source_output_free(pa_object* mo);
  48
  49 pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data) {
  50     pa_assert(data);
  51
  52     memset(data, 0, sizeof(*data));
  53     data->resample_method = PA_RESAMPLER_INVALID;
  54     data->proplist = pa_proplist_new();
  55
  56     return data;
  57 }
  58
  59 void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec) {
  60     pa_assert(data);
  61
  62     if ((data->sample_spec_is_set = !!spec))
  63         data->sample_spec = *spec;
  64 }
  65
  66 void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map) {
  67     pa_assert(data);
  68
  69     if ((data->channel_map_is_set = !!map))
  70         data->channel_map = *map;
  71 }
  72
  73 void pa_source_output_new_data_done(pa_source_output_new_data *data) {
  74     pa_assert(data);
  75
  76     pa_proplist_free(data->proplist);
  77 }
  78
  79 static void reset_callbacks(pa_source_output *o) {
  80     pa_assert(o);
  81
  82     o->push = NULL;
  83     o->rewind = NULL;
  84     o->set_max_rewind = NULL;
  85     o->attach = NULL;
  86     o->detach = NULL;
  87     o->suspend = NULL;
  88     o->moved = NULL;
  89     o->kill = NULL;
  90     o->get_latency = NULL;
  91 }
  92
  93 pa_source_output* pa_source_output_new(
  94         pa_core *core,
  95         pa_source_output_new_data *data,
  96         pa_source_output_flags_t flags) {
  97
  98     pa_source_output *o;
  99     pa_resampler *resampler = NULL;
 100     char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
 101
 102     pa_assert(core);
 103     pa_assert(data);
 104
 105     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], data) < 0)
 106         return NULL;
 107
 108     pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
 109
 110     if (!data->source)
 111         data->source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE, 1);
 112
 113     pa_return_null_if_fail(data->source);
 114     pa_return_null_if_fail(pa_source_get_state(data->source) != PA_SOURCE_UNLINKED);
 115
 116     if (!data->sample_spec_is_set)
 117         data->sample_spec = data->source->sample_spec;
 118
 119     pa_return_null_if_fail(pa_sample_spec_valid(&data->sample_spec));
 120
 121     if (!data->channel_map_is_set) {
 122         if (data->source->channel_map.channels == data->sample_spec.channels)
 123             data->channel_map = data->source->channel_map;
 124         else
 125             pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
 126     }
 127
 128     pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
 129     pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
 130
 131     if (flags & PA_SOURCE_OUTPUT_FIX_FORMAT)
 132         data->sample_spec.format = data->source->sample_spec.format;
 133
 134     if (flags & PA_SOURCE_OUTPUT_FIX_RATE)
 135         data->sample_spec.rate = data->source->sample_spec.rate;
 136
 137     if (flags & PA_SOURCE_OUTPUT_FIX_CHANNELS) {
 138         data->sample_spec.channels = data->source->sample_spec.channels;
 139         data->channel_map = data->source->channel_map;
 140     }
 141
 142     pa_assert(pa_sample_spec_valid(&data->sample_spec));
 143     pa_assert(pa_channel_map_valid(&data->channel_map));
 144
 145     if (data->resample_method == PA_RESAMPLER_INVALID)
 146         data->resample_method = core->resample_method;
 147
 148     pa_return_null_if_fail(data->resample_method < PA_RESAMPLER_MAX);
 149
 150     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], data) < 0)
 151         return NULL;
 152
 153     if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
 154         pa_log("Failed to create source output: too many outputs per source.");
 155         return NULL;
 156     }
 157
 158     if ((flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
 159         !pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
 160         !pa_channel_map_equal(&data->channel_map, &data->source->channel_map)) {
 161
 162         if (!(resampler = pa_resampler_new(
 163                       core->mempool,
 164                       &data->source->sample_spec, &data->source->channel_map,
 165                       &data->sample_spec, &data->channel_map,
 166                       data->resample_method,
 167                       ((flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
 168                       ((flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
 169                       (core->disable_remixing || (flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
 170             pa_log_warn("Unsupported resampling operation.");
 171             return NULL;
 172         }
 173
 174         data->resample_method = pa_resampler_get_method(resampler);
 175     }
 176
 177     o = pa_msgobject_new(pa_source_output);
 178     o->parent.parent.free = source_output_free;
 179     o->parent.process_msg = pa_source_output_process_msg;
 180
 181     o->core = core;
 182     o->state = PA_SOURCE_OUTPUT_INIT;
 183     o->flags = flags;
 184     o->proplist = pa_proplist_copy(data->proplist);
 185     o->driver = pa_xstrdup(data->driver);
 186     o->module = data->module;
 187     o->source = data->source;
 188     o->client = data->client;
 189
 190     o->resample_method = data->resample_method;
 191     o->sample_spec = data->sample_spec;
 192     o->channel_map = data->channel_map;
 193
 194     reset_callbacks(o);
 195     o->userdata = NULL;
 196
 197     o->thread_info.state = o->state;
 198     o->thread_info.attached = FALSE;
 199     o->thread_info.sample_spec = o->sample_spec;
 200     o->thread_info.resampler = resampler;
 201     o->thread_info.requested_source_latency = 0;
 202
 203     o->thread_info.delay_memblockq = pa_memblockq_new(
 204             0,
 205             MEMBLOCKQ_MAXLENGTH,
 206             0,
 207             pa_frame_size(&o->source->sample_spec),
 208             0,
 209             1,
 210             0,
 211             &o->source->silence);
 212
 213     pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
 214     pa_assert_se(pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL) == 0);
 215
 216     pa_log_info("Created output %u \"%s\" on %s with sample spec %s and channel map %s",
 217                 o->index,
 218                 pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)),
 219                 o->source->name,
 220                 pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec),
 221                 pa_channel_map_snprint(cm, sizeof(cm), &o->channel_map));
 222
 223     /* Don't forget to call pa_source_output_put! */
 224
 225     return o;
 226 }
 227
 228 static void update_n_corked(pa_source_output *o, pa_source_output_state_t state) {
 229     pa_assert(o);
 230
 231     if (o->state == PA_SOURCE_OUTPUT_CORKED && state != PA_SOURCE_OUTPUT_CORKED)
 232         pa_assert_se(o->source->n_corked -- >= 1);
 233     else if (o->state != PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_CORKED)
 234         o->source->n_corked++;
 235
 236     pa_source_update_status(o->source);
 237 }
 238
 239 static int source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
 240     pa_assert(o);
 241
 242     if (o->state == state)
 243         return 0;
 244
 245     if (pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 246         return -1;
 247
 248     update_n_corked(o, state);
 249     o->state = state;
 250
 251     if (state != PA_SOURCE_OUTPUT_UNLINKED)
 252         pa_hook_fire(&o->source->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], o);
 253
 254     return 0;
 255 }
 256
 257 void pa_source_output_unlink(pa_source_output*o) {
 258     pa_bool_t linked;
 259     pa_assert(o);
 260
 261     /* See pa_sink_unlink() for a couple of comments how this function
 262      * works */
 263
 264     pa_source_output_ref(o);
 265
 266     linked = PA_SOURCE_OUTPUT_LINKED(o->state);
 267
 268     if (linked)
 269         pa_hook_fire(&o->source->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], o);
 270
 271     pa_idxset_remove_by_data(o->source->core->source_outputs, o, NULL);
 272     if (pa_idxset_remove_by_data(o->source->outputs, o, NULL))
 273         pa_source_output_unref(o);
 274
 275     if (linked) {
 276         pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
 277         source_output_set_state(o, PA_SOURCE_OUTPUT_UNLINKED);
 278         pa_source_update_status(o->source);
 279     } else
 280         o->state = PA_SOURCE_OUTPUT_UNLINKED;
 281
 282     reset_callbacks(o);
 283
 284     if (linked) {
 285         pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
 286         pa_hook_fire(&o->source->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], o);
 287     }
 288
 289     o->source = NULL;
 290     pa_source_output_unref(o);
 291 }
 292
 293 static void source_output_free(pa_object* mo) {
 294     pa_source_output *o = PA_SOURCE_OUTPUT(mo);
 295
 296     pa_assert(pa_source_output_refcnt(o) == 0);
 297
 298     if (PA_SOURCE_OUTPUT_LINKED(o->state))
 299         pa_source_output_unlink(o);
 300
 301     pa_log_info("Freeing output %u \"%s\"", o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)));
 302
 303     pa_assert(!o->thread_info.attached);
 304
 305     if (o->thread_info.delay_memblockq)
 306         pa_memblockq_free(o->thread_info.delay_memblockq);
 307
 308     if (o->thread_info.resampler)
 309         pa_resampler_free(o->thread_info.resampler);
 310
 311     if (o->proplist)
 312         pa_proplist_free(o->proplist);
 313
 314     pa_xfree(o->driver);
 315     pa_xfree(o);
 316 }
 317
 318 void pa_source_output_put(pa_source_output *o) {
 319     pa_source_output_state_t state;
 320     pa_source_output_assert_ref(o);
 321
 322     pa_assert(o->state == PA_SOURCE_OUTPUT_INIT);
 323     pa_assert(o->push);
 324
 325     state = o->flags & PA_SOURCE_OUTPUT_START_CORKED ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
 326
 327     update_n_corked(o, state);
 328     o->thread_info.state = o->state = state;
 329
 330     pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL);
 331
 332     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
 333     pa_hook_fire(&o->source->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], o);
 334 }
 335
 336 void pa_source_output_kill(pa_source_output*o) {
 337     pa_source_output_assert_ref(o);
 338     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->state));
 339
 340     if (o->kill)
 341         o->kill(o);
 342 }
 343
 344 pa_usec_t pa_source_output_get_latency(pa_source_output *o) {
 345     pa_usec_t r = 0;
 346
 347     pa_source_output_assert_ref(o);
 348     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->state));
 349
 350     if (pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, &r, 0, NULL) < 0)
 351         r = 0;
 352
 353     if (o->get_latency)
 354         r += o->get_latency(o);
 355
 356     return r;
 357 }
 358
 359 /* Called from thread context */
 360 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
 361     size_t length;
 362     size_t limit;
 363
 364     pa_source_output_assert_ref(o);
 365     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->thread_info.state));
 366     pa_assert(chunk);
 367     pa_assert(pa_frame_aligned(chunk->length, &o->source->sample_spec));
 368
 369     if (!o->push || o->state == PA_SOURCE_OUTPUT_CORKED)
 370         return;
 371
 372     pa_assert(o->state == PA_SOURCE_OUTPUT_RUNNING);
 373
 374     if (pa_memblockq_push(o->thread_info.delay_memblockq, chunk) < 0) {
 375         pa_log_debug("Delay queue overflow!");
 376         pa_memblockq_seek(o->thread_info.delay_memblockq, chunk->length, PA_SEEK_RELATIVE);
 377     }
 378
 379     limit = o->rewind ? 0 : o->source->thread_info.max_rewind;
 380
 381     /* Implement the delay queue */
 382     while ((length = pa_memblockq_get_length(o->thread_info.delay_memblockq)) > limit) {
 383         pa_memchunk qchunk;
 384
 385         length -= limit;
 386
 387         pa_assert_se(pa_memblockq_peek(o->thread_info.delay_memblockq, &qchunk) >= 0);
 388
 389         if (qchunk.length > length)
 390             qchunk.length = length;
 391
 392         pa_assert(qchunk.length > 0);
 393
 394         if (!o->thread_info.resampler)
 395             o->push(o, &qchunk);
 396         else {
 397             pa_memchunk rchunk;
 398
 399             pa_resampler_run(o->thread_info.resampler, &qchunk, &rchunk);
 400
 401             if (rchunk.length > 0)
 402                 o->push(o, &rchunk);
 403
 404             pa_memblock_unref(rchunk.memblock);
 405         }
 406
 407         pa_memblock_unref(qchunk.memblock);
 408     }
 409 }
 410
 411 /* Called from thread context */
 412 void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes /* in sink sample spec */) {
 413     pa_source_output_assert_ref(o);
 414
 415     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->state));
 416     pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
 417
 418     if (nbytes <= 0)
 419         return;
 420
 421     if (o->rewind) {
 422         pa_assert(pa_memblockq_get_length(o->thread_info.delay_memblockq) == 0);
 423
 424         if (o->thread_info.resampler)
 425             nbytes = pa_resampler_result(o->thread_info.resampler, nbytes);
 426
 427         pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) nbytes);
 428
 429         if (nbytes > 0)
 430             o->rewind(o, nbytes);
 431
 432         if (o->thread_info.resampler)
 433             pa_resampler_reset(o->thread_info.resampler);
 434
 435     } else
 436         pa_memblockq_rewind(o->thread_info.delay_memblockq, nbytes);
 437 }
 438
 439 /* Called from thread context */
 440 void pa_source_output_set_max_rewind(pa_source_output *o, size_t nbytes  /* in the source's sample spec */) {
 441     pa_source_output_assert_ref(o);
 442     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->thread_info.state));
 443     pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
 444
 445     if (o->set_max_rewind)
 446         o->set_max_rewind(o, o->thread_info.resampler ? pa_resampler_result(o->thread_info.resampler, nbytes) : nbytes);
 447 }
 448
 449 pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec) {
 450     pa_source_output_assert_ref(o);
 451
 452     if (usec > 0) {
 453
 454         if (o->source->max_latency > 0 && usec > o->source->max_latency)
 455             usec = o->source->max_latency;
 456
 457         if (o->source->min_latency > 0 && usec < o->source->min_latency)
 458             usec = o->source->min_latency;
 459     }
 460
 461     if (PA_SOURCE_OUTPUT_LINKED(o->state))
 462         pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY, NULL, (int64_t) usec, NULL, NULL);
 463     else {
 464         o->thread_info.requested_source_latency = usec;
 465         o->source->thread_info.requested_latency_valid = FALSE;
 466     }
 467
 468     return usec;
 469 }
 470
 471 void pa_source_output_cork(pa_source_output *o, pa_bool_t b) {
 472     pa_source_output_assert_ref(o);
 473     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->state));
 474
 475     source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
 476 }
 477
 478 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
 479     pa_source_output_assert_ref(o);
 480     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->state));
 481     pa_return_val_if_fail(o->thread_info.resampler, -1);
 482
 483     if (o->sample_spec.rate == rate)
 484         return 0;
 485
 486     o->sample_spec.rate = rate;
 487
 488     pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
 489
 490     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 491     return 0;
 492 }
 493
 494 void pa_source_output_set_name(pa_source_output *o, const char *name) {
 495     const char *old;
 496     pa_source_output_assert_ref(o);
 497
 498     old = pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME);
 499
 500     if (!old && !name)
 501         return;
 502
 503     if (old && name && !strcmp(old, name))
 504         return;
 505
 506     if (name)
 507         pa_proplist_sets(o->proplist, PA_PROP_MEDIA_NAME, name);
 508     else
 509         pa_proplist_unset(o->proplist, PA_PROP_MEDIA_NAME);
 510
 511     if (PA_SOURCE_OUTPUT_LINKED(o->state)) {
 512         pa_hook_fire(&o->source->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
 513         pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 514     }
 515 }
 516
 517 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
 518     pa_source_output_assert_ref(o);
 519
 520     return o->resample_method;
 521 }
 522
 523 int pa_source_output_move_to(pa_source_output *o, pa_source *dest) {
 524     pa_source *origin;
 525     pa_resampler *new_resampler = NULL;
 526     pa_source_output_move_hook_data hook_data;
 527
 528     pa_source_output_assert_ref(o);
 529     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->state));
 530     pa_source_assert_ref(dest);
 531
 532     origin = o->source;
 533
 534     if (dest == origin)
 535         return 0;
 536
 537     if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
 538         return -1;
 539
 540     if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
 541         pa_log_warn("Failed to move source output: too many outputs per source.");
 542         return -1;
 543     }
 544
 545     if (o->thread_info.resampler &&
 546         pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) &&
 547         pa_channel_map_equal(&origin->channel_map, &dest->channel_map))
 548
 549         /* Try to reuse the old resampler if possible */
 550         new_resampler = o->thread_info.resampler;
 551
 552     else if ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
 553              !pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec) ||
 554              !pa_channel_map_equal(&o->channel_map, &dest->channel_map)) {
 555
 556         /* Okey, we need a new resampler for the new source */
 557
 558         if (!(new_resampler = pa_resampler_new(
 559                       dest->core->mempool,
 560                       &dest->sample_spec, &dest->channel_map,
 561                       &o->sample_spec, &o->channel_map,
 562                       o->resample_method,
 563                       ((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
 564                       ((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
 565                       (o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
 566             pa_log_warn("Unsupported resampling operation.");
 567             return -1;
 568         }
 569     }
 570
 571     hook_data.source_output = o;
 572     hook_data.destination = dest;
 573     pa_hook_fire(&o->source->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE], &hook_data);
 574
 575     /* Okey, let's move it */
 576     pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
 577
 578     pa_idxset_remove_by_data(origin->outputs, o, NULL);
 579     pa_idxset_put(dest->outputs, o, NULL);
 580     o->source = dest;
 581
 582     if (pa_source_output_get_state(o) == PA_SOURCE_OUTPUT_CORKED) {
 583         pa_assert_se(origin->n_corked-- >= 1);
 584         dest->n_corked++;
 585     }
 586
 587     /* Replace resampler */
 588     if (new_resampler != o->thread_info.resampler) {
 589         if (o->thread_info.resampler)
 590             pa_resampler_free(o->thread_info.resampler);
 591         o->thread_info.resampler = new_resampler;
 592     }
 593
 594     pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL);
 595
 596     pa_source_update_status(origin);
 597     pa_source_update_status(dest);
 598
 599     if (o->moved)
 600         o->moved(o);
 601
 602     pa_hook_fire(&o->source->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_POST], o);
 603
 604     pa_log_debug("Successfully moved source output %i from %s to %s.", o->index, origin->name, dest->name);
 605
 606     /* Notify everyone */
 607     pa_subscription_post(o->source->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
 608
 609     return 0;
 610 }
 611
 612 /* Called from thread context */
 613 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
 614     pa_source_output *o = PA_SOURCE_OUTPUT(mo);
 615
 616     pa_source_output_assert_ref(o);
 617     pa_assert(PA_SOURCE_OUTPUT_LINKED(o->thread_info.state));
 618
 619     switch (code) {
 620
 621         case PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY: {
 622             pa_usec_t *r = userdata;
 623
 624             *r += pa_bytes_to_usec(pa_memblockq_get_length(o->thread_info.delay_memblockq), &o->source->sample_spec);
 625
 626             return 0;
 627         }
 628
 629         case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE: {
 630
 631             o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
 632             pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
 633
 634             return 0;
 635         }
 636
 637         case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE: {
 638             o->thread_info.state = PA_PTR_TO_UINT(userdata);
 639
 640             return 0;
 641         }
 642
 643         case PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY:
 644
 645             o->thread_info.requested_source_latency = (pa_usec_t) offset;
 646             pa_source_invalidate_requested_latency(o->source);
 647
 648             return 0;
 649     }
 650
 651     return -1;
 652 }