code.delx.au - pulseaudio/blob - src/pulsecore/sink-input.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include <pulse/utf8.h>
  34 #include <pulse/xmalloc.h>
  35
  36 #include <pulsecore/sample-util.h>
  37 #include <pulsecore/core-subscribe.h>
  38 #include <pulsecore/log.h>
  39 #include <pulsecore/play-memblockq.h>
  40 #include <pulsecore/namereg.h>
  41
  42 #include "sink-input.h"
  43
  44 #define CONVERT_BUFFER_LENGTH 4096
  45 #define MOVE_BUFFER_LENGTH (1024*1024)
  46 #define SILENCE_BUFFER_LENGTH (64*1024)
  47
  48 static PA_DEFINE_CHECK_TYPE(pa_sink_input, pa_msgobject);
  49
  50 static void sink_input_free(pa_object *o);
  51
  52 pa_sink_input_new_data* pa_sink_input_new_data_init(pa_sink_input_new_data *data) {
  53     pa_assert(data);
  54
  55     memset(data, 0, sizeof(*data));
  56     data->resample_method = PA_RESAMPLER_INVALID;
  57
  58     return data;
  59 }
  60
  61 void pa_sink_input_new_data_set_channel_map(pa_sink_input_new_data *data, const pa_channel_map *map) {
  62     pa_assert(data);
  63
  64     if ((data->channel_map_is_set = !!map))
  65         data->channel_map = *map;
  66 }
  67
  68 void pa_sink_input_new_data_set_volume(pa_sink_input_new_data *data, const pa_cvolume *volume) {
  69     pa_assert(data);
  70
  71     if ((data->volume_is_set = !!volume))
  72         data->volume = *volume;
  73 }
  74
  75 void pa_sink_input_new_data_set_sample_spec(pa_sink_input_new_data *data, const pa_sample_spec *spec) {
  76     pa_assert(data);
  77
  78     if ((data->sample_spec_is_set = !!spec))
  79         data->sample_spec = *spec;
  80 }
  81
  82 void pa_sink_input_new_data_set_muted(pa_sink_input_new_data *data, int mute) {
  83     pa_assert(data);
  84
  85     data->muted_is_set = 1;
  86     data->muted = !!mute;
  87 }
  88
  89 pa_sink_input* pa_sink_input_new(
  90         pa_core *core,
  91         pa_sink_input_new_data *data,
  92         pa_sink_input_flags_t flags) {
  93
  94     pa_sink_input *i;
  95     pa_resampler *resampler = NULL;
  96     char st[PA_SAMPLE_SPEC_SNPRINT_MAX];
  97
  98     pa_assert(core);
  99     pa_assert(data);
 100
 101     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], data) < 0)
 102         return NULL;
 103
 104     pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
 105     pa_return_null_if_fail(!data->name || pa_utf8_valid(data->name));
 106
 107     if (!data->sink)
 108         data->sink = pa_namereg_get(core, NULL, PA_NAMEREG_SINK, 1);
 109
 110     pa_return_null_if_fail(data->sink);
 111     pa_return_null_if_fail(pa_sink_get_state(data->sink) != PA_SINK_UNLINKED);
 112     pa_return_null_if_fail(!data->sync_base || (data->sync_base->sink == data->sink && pa_sink_input_get_state(data->sync_base) == PA_SINK_INPUT_CORKED));
 113
 114     if (!data->sample_spec_is_set)
 115         data->sample_spec = data->sink->sample_spec;
 116
 117     pa_return_null_if_fail(pa_sample_spec_valid(&data->sample_spec));
 118
 119     if (!data->channel_map_is_set) {
 120         if (data->sink->channel_map.channels == data->sample_spec.channels)
 121             data->channel_map = data->sink->channel_map;
 122         else
 123             pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT);
 124     }
 125
 126     pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
 127     pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
 128
 129     if (!data->volume_is_set)
 130         pa_cvolume_reset(&data->volume, data->sample_spec.channels);
 131
 132     pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
 133     pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels);
 134
 135     if (!data->muted_is_set)
 136         data->muted = 0;
 137
 138     if (data->resample_method == PA_RESAMPLER_INVALID)
 139         data->resample_method = core->resample_method;
 140
 141     pa_return_null_if_fail(data->resample_method < PA_RESAMPLER_MAX);
 142
 143     if (pa_idxset_size(data->sink->inputs) >= PA_MAX_INPUTS_PER_SINK) {
 144         pa_log_warn("Failed to create sink input: too many inputs per sink.");
 145         return NULL;
 146     }
 147
 148     if ((flags & PA_SINK_INPUT_VARIABLE_RATE) ||
 149         !pa_sample_spec_equal(&data->sample_spec, &data->sink->sample_spec) ||
 150         !pa_channel_map_equal(&data->channel_map, &data->sink->channel_map)) {
 151
 152         if (!(resampler = pa_resampler_new(
 153                       core->mempool,
 154                       &data->sample_spec, &data->channel_map,
 155                       &data->sink->sample_spec, &data->sink->channel_map,
 156                       data->resample_method,
 157                       !!(flags & PA_SINK_INPUT_VARIABLE_RATE)))) {
 158             pa_log_warn("Unsupported resampling operation.");
 159             return NULL;
 160         }
 161
 162         data->resample_method = pa_resampler_get_method(resampler);
 163     }
 164
 165     i = pa_msgobject_new(pa_sink_input);
 166     i->parent.parent.free = sink_input_free;
 167     i->parent.process_msg = pa_sink_input_process_msg;
 168
 169     i->core = core;
 170     i->state = PA_SINK_INPUT_INIT;
 171     i->flags = flags;
 172     i->name = pa_xstrdup(data->name);
 173     i->driver = pa_xstrdup(data->driver);
 174     i->module = data->module;
 175     i->sink = data->sink;
 176     i->client = data->client;
 177
 178     i->resample_method = data->resample_method;
 179     i->sample_spec = data->sample_spec;
 180     i->channel_map = data->channel_map;
 181
 182     i->volume = data->volume;
 183     i->muted = data->muted;
 184
 185     if (data->sync_base) {
 186         i->sync_next = data->sync_base->sync_next;
 187         i->sync_prev = data->sync_base;
 188
 189         if (data->sync_base->sync_next)
 190             data->sync_base->sync_next->sync_prev = i;
 191         data->sync_base->sync_next = i;
 192     } else
 193         i->sync_next = i->sync_prev = NULL;
 194
 195     i->peek = NULL;
 196     i->drop = NULL;
 197     i->kill = NULL;
 198     i->get_latency = NULL;
 199     i->attach = NULL;
 200     i->detach = NULL;
 201     i->suspend = NULL;
 202     i->userdata = NULL;
 203
 204     i->thread_info.state = i->state;
 205     pa_atomic_store(&i->thread_info.drained, 1);
 206     i->thread_info.sample_spec = i->sample_spec;
 207     i->thread_info.silence_memblock = NULL;
 208     i->thread_info.move_silence = 0;
 209     pa_memchunk_reset(&i->thread_info.resampled_chunk);
 210     i->thread_info.resampler = resampler;
 211     i->thread_info.volume = i->volume;
 212     i->thread_info.muted = i->muted;
 213
 214     pa_assert_se(pa_idxset_put(core->sink_inputs, pa_sink_input_ref(i), &i->index) == 0);
 215     pa_assert_se(pa_idxset_put(i->sink->inputs, i, NULL) == 0);
 216
 217     pa_log_info("Created input %u \"%s\" on %s with sample spec %s",
 218                 i->index,
 219                 i->name,
 220                 i->sink->name,
 221                 pa_sample_spec_snprint(st, sizeof(st), &i->sample_spec));
 222
 223     /* Don't forget to call pa_sink_input_put! */
 224
 225     return i;
 226 }
 227
 228 static void update_n_corked(pa_sink_input *i, pa_sink_input_state_t state) {
 229     pa_assert(i);
 230
 231     if (i->state == PA_SINK_INPUT_CORKED && state != PA_SINK_INPUT_CORKED)
 232         pa_assert_se(i->sink->n_corked -- >= 1);
 233     else if (i->state != PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_CORKED)
 234         i->sink->n_corked++;
 235 }
 236
 237 static int sink_input_set_state(pa_sink_input *i, pa_sink_input_state_t state) {
 238     pa_sink_input *ssync;
 239     pa_assert(i);
 240
 241     if (state == PA_SINK_INPUT_DRAINED)
 242         state = PA_SINK_INPUT_RUNNING;
 243
 244     if (i->state == state)
 245         return 0;
 246
 247     if (pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 248         return -1;
 249
 250     update_n_corked(i, state);
 251     i->state = state;
 252
 253     for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev) {
 254         update_n_corked(ssync, state);
 255         ssync->state = state;
 256     }
 257     for (ssync = i->sync_next; ssync; ssync = ssync->sync_next) {
 258         update_n_corked(ssync, state);
 259         ssync->state = state;
 260     }
 261
 262     return 0;
 263 }
 264
 265 void pa_sink_input_unlink(pa_sink_input *i) {
 266     pa_assert(i);
 267     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 268
 269     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK], i);
 270
 271     if (i->sync_prev)
 272         i->sync_prev->sync_next = i->sync_next;
 273     if (i->sync_next)
 274         i->sync_next->sync_prev = i->sync_prev;
 275
 276     i->sync_prev = i->sync_next = NULL;
 277
 278     pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_REMOVE_INPUT, i, 0, NULL);
 279     pa_idxset_remove_by_data(i->sink->core->sink_inputs, i, NULL);
 280     pa_idxset_remove_by_data(i->sink->inputs, i, NULL);
 281
 282     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_REMOVE, i->index);
 283
 284     sink_input_set_state(i, PA_SINK_INPUT_UNLINKED);
 285     pa_sink_update_status(i->sink);
 286
 287     i->peek = NULL;
 288     i->drop = NULL;
 289     i->kill = NULL;
 290     i->get_latency = NULL;
 291     i->attach = NULL;
 292     i->detach = NULL;
 293     i->suspend = NULL;
 294
 295     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST], i);
 296     i->sink = NULL;
 297     pa_sink_input_unref(i);
 298 }
 299
 300 static void sink_input_free(pa_object *o) {
 301     pa_sink_input* i = PA_SINK_INPUT(o);
 302
 303     pa_assert(i);
 304     pa_assert(pa_sink_input_refcnt(i) == 0);
 305
 306     if (PA_SINK_INPUT_LINKED(i->state))
 307         pa_sink_input_unlink(i);
 308
 309     pa_log_info("Freeing output %u \"%s\"", i->index, i->name);
 310
 311     if (i->thread_info.resampled_chunk.memblock)
 312         pa_memblock_unref(i->thread_info.resampled_chunk.memblock);
 313
 314     if (i->thread_info.resampler)
 315         pa_resampler_free(i->thread_info.resampler);
 316
 317     if (i->thread_info.silence_memblock)
 318         pa_memblock_unref(i->thread_info.silence_memblock);
 319
 320     pa_xfree(i->name);
 321     pa_xfree(i->driver);
 322     pa_xfree(i);
 323 }
 324
 325 void pa_sink_input_put(pa_sink_input *i) {
 326     pa_sink_input_assert_ref(i);
 327
 328     pa_assert(i->state == PA_SINK_INPUT_INIT);
 329     pa_assert(i->peek);
 330     pa_assert(i->drop);
 331
 332     i->thread_info.state = i->state = i->flags & PA_SINK_INPUT_START_CORKED ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING;
 333     i->thread_info.volume = i->volume;
 334     i->thread_info.muted = i->muted;
 335
 336     pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_ADD_INPUT, i, 0, NULL);
 337     pa_sink_update_status(i->sink);
 338
 339     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, i->index);
 340     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], i);
 341
 342     /* Please note that if you change something here, you have to
 343        change something in pa_sink_input_move() with the ghost stream
 344        registration too. */
 345 }
 346
 347 void pa_sink_input_kill(pa_sink_input*i) {
 348     pa_sink_input_assert_ref(i);
 349     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 350
 351     if (i->kill)
 352         i->kill(i);
 353 }
 354
 355 pa_usec_t pa_sink_input_get_latency(pa_sink_input *i) {
 356     pa_usec_t r = 0;
 357
 358     pa_sink_input_assert_ref(i);
 359     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 360
 361     if (pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_LATENCY, &r, 0, NULL) < 0)
 362         r = 0;
 363
 364     if (i->get_latency)
 365         r += i->get_latency(i);
 366
 367     return r;
 368 }
 369
 370 /* Called from thread context */
 371 int pa_sink_input_peek(pa_sink_input *i, pa_memchunk *chunk, pa_cvolume *volume) {
 372     int ret = -1;
 373     int do_volume_adj_here;
 374     int volume_is_norm;
 375
 376     pa_sink_input_assert_ref(i);
 377     pa_assert(PA_SINK_INPUT_LINKED(i->thread_info.state));
 378     pa_assert(chunk);
 379     pa_assert(volume);
 380
 381     if (!i->peek || !i->drop || i->thread_info.state == PA_SINK_INPUT_UNLINKED || i->thread_info.state == PA_SINK_INPUT_CORKED)
 382         goto finish;
 383
 384     pa_assert(i->thread_info.state == PA_SINK_INPUT_RUNNING || i->thread_info.state == PA_SINK_INPUT_DRAINED);
 385
 386     if (i->thread_info.move_silence > 0) {
 387         size_t l;
 388
 389         /* We have just been moved and shall play some silence for a
 390          * while until the old sink has drained its playback buffer */
 391
 392         if (!i->thread_info.silence_memblock)
 393             i->thread_info.silence_memblock = pa_silence_memblock_new(i->sink->core->mempool, &i->sink->sample_spec, SILENCE_BUFFER_LENGTH);
 394
 395         chunk->memblock = pa_memblock_ref(i->thread_info.silence_memblock);
 396         chunk->index = 0;
 397         l = pa_memblock_get_length(chunk->memblock);
 398         chunk->length = i->thread_info.move_silence < l ? i->thread_info.move_silence : l;
 399
 400         ret = 0;
 401         do_volume_adj_here = 1;
 402         goto finish;
 403     }
 404
 405     if (!i->thread_info.resampler) {
 406         do_volume_adj_here = 0; /* FIXME??? */
 407         ret = i->peek(i, chunk);
 408         goto finish;
 409     }
 410
 411     do_volume_adj_here = !pa_channel_map_equal(&i->channel_map, &i->sink->channel_map);
 412     volume_is_norm = pa_cvolume_is_norm(&i->thread_info.volume) && !i->thread_info.muted;
 413
 414     while (!i->thread_info.resampled_chunk.memblock) {
 415         pa_memchunk tchunk;
 416         size_t l;
 417
 418         if ((ret = i->peek(i, &tchunk)) < 0)
 419             goto finish;
 420
 421         pa_assert(tchunk.length > 0);
 422
 423         l = pa_resampler_request(i->thread_info.resampler, CONVERT_BUFFER_LENGTH);
 424
 425         if (tchunk.length > l)
 426             tchunk.length = l;
 427
 428         i->drop(i, tchunk.length);
 429
 430         /* It might be necessary to adjust the volume here */
 431         if (do_volume_adj_here && !volume_is_norm) {
 432             pa_memchunk_make_writable(&tchunk, 0);
 433
 434             if (i->thread_info.muted)
 435                 pa_silence_memchunk(&tchunk, &i->thread_info.sample_spec);
 436             else
 437                 pa_volume_memchunk(&tchunk, &i->thread_info.sample_spec, &i->thread_info.volume);
 438         }
 439
 440         pa_resampler_run(i->thread_info.resampler, &tchunk, &i->thread_info.resampled_chunk);
 441         pa_memblock_unref(tchunk.memblock);
 442     }
 443
 444     pa_assert(i->thread_info.resampled_chunk.memblock);
 445     pa_assert(i->thread_info.resampled_chunk.length > 0);
 446
 447     *chunk = i->thread_info.resampled_chunk;
 448     pa_memblock_ref(i->thread_info.resampled_chunk.memblock);
 449
 450     ret = 0;
 451
 452 finish:
 453
 454     if (ret >= 0)
 455         pa_atomic_store(&i->thread_info.drained, 0);
 456     else if (ret < 0)
 457         pa_atomic_store(&i->thread_info.drained, 1);
 458
 459     if (ret >= 0) {
 460         /* Let's see if we had to apply the volume adjustment
 461          * ourselves, or if this can be done by the sink for us */
 462
 463         if (do_volume_adj_here)
 464             /* We had different channel maps, so we already did the adjustment */
 465             pa_cvolume_reset(volume, i->sink->sample_spec.channels);
 466         else if (i->thread_info.muted)
 467             /* We've both the same channel map, so let's have the sink do the adjustment for us*/
 468             pa_cvolume_mute(volume, i->sink->sample_spec.channels);
 469         else
 470             *volume = i->thread_info.volume;
 471     }
 472
 473     return ret;
 474 }
 475
 476 /* Called from thread context */
 477 void pa_sink_input_drop(pa_sink_input *i, size_t length) {
 478     pa_sink_input_assert_ref(i);
 479     pa_assert(PA_SINK_INPUT_LINKED(i->thread_info.state));
 480     pa_assert(length > 0);
 481
 482     if (i->thread_info.move_silence > 0) {
 483
 484         if (i->thread_info.move_silence >= length) {
 485             i->thread_info.move_silence -= length;
 486             length = 0;
 487         } else {
 488             length -= i->thread_info.move_silence;
 489             i->thread_info.move_silence = 0;
 490         }
 491
 492         if (i->thread_info.move_silence <= 0) {
 493             pa_assert(i->thread_info.silence_memblock);
 494             pa_memblock_unref(i->thread_info.silence_memblock);
 495             i->thread_info.silence_memblock = NULL;
 496         }
 497
 498         if (length <= 0)
 499             return;
 500     }
 501
 502     if (i->thread_info.resampled_chunk.memblock) {
 503         size_t l = length;
 504
 505         if (l > i->thread_info.resampled_chunk.length)
 506             l = i->thread_info.resampled_chunk.length;
 507
 508         i->thread_info.resampled_chunk.index += l;
 509         i->thread_info.resampled_chunk.length -= l;
 510
 511         if (i->thread_info.resampled_chunk.length <= 0) {
 512             pa_memblock_unref(i->thread_info.resampled_chunk.memblock);
 513             pa_memchunk_reset(&i->thread_info.resampled_chunk);
 514         }
 515
 516         length -= l;
 517     }
 518
 519     if (length > 0) {
 520
 521         if (i->thread_info.resampler) {
 522             /* So, we have a resampler. To avoid discontinuities we
 523              * have to actually read all data that could be read and
 524              * pass it through the resampler. */
 525
 526             while (length > 0) {
 527                 pa_memchunk chunk;
 528                 pa_cvolume volume;
 529
 530                 if (pa_sink_input_peek(i, &chunk, &volume) >= 0) {
 531                     size_t l;
 532
 533                     pa_memblock_unref(chunk.memblock);
 534
 535                     l = chunk.length;
 536                     if (l > length)
 537                         l = length;
 538
 539                     pa_sink_input_drop(i, l);
 540                     length -= l;
 541
 542                 } else {
 543                     size_t l;
 544
 545                     /* Hmmm, peeking failed, so let's at least drop
 546                      * the right amount of data */
 547
 548                     if ((l = pa_resampler_request(i->thread_info.resampler, length)) > 0)
 549                         if (i->drop)
 550                             i->drop(i, l);
 551
 552                     break;
 553                 }
 554             }
 555
 556         } else {
 557
 558             /* We have no resampler, hence let's just drop the data */
 559
 560             if (i->drop)
 561                 i->drop(i, length);
 562         }
 563     }
 564 }
 565
 566 void pa_sink_input_set_volume(pa_sink_input *i, const pa_cvolume *volume) {
 567     pa_sink_input_assert_ref(i);
 568     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 569
 570     if (pa_cvolume_equal(&i->volume, volume))
 571         return;
 572
 573     i->volume = *volume;
 574
 575     pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree);
 576     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 577 }
 578
 579 const pa_cvolume *pa_sink_input_get_volume(pa_sink_input *i) {
 580     pa_sink_input_assert_ref(i);
 581     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 582
 583     return &i->volume;
 584 }
 585
 586 void pa_sink_input_set_mute(pa_sink_input *i, int mute) {
 587     pa_assert(i);
 588     pa_sink_input_assert_ref(i);
 589     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 590
 591     if (!i->muted == !mute)
 592         return;
 593
 594     i->muted = mute;
 595
 596     pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 597     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 598 }
 599
 600 int pa_sink_input_get_mute(pa_sink_input *i) {
 601     pa_sink_input_assert_ref(i);
 602     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 603
 604     return !!i->muted;
 605 }
 606
 607 void pa_sink_input_cork(pa_sink_input *i, int b) {
 608     pa_sink_input_assert_ref(i);
 609     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 610
 611     sink_input_set_state(i, b ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING);
 612 }
 613
 614 int pa_sink_input_set_rate(pa_sink_input *i, uint32_t rate) {
 615     pa_sink_input_assert_ref(i);
 616     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 617     pa_return_val_if_fail(i->thread_info.resampler, -1);
 618
 619     if (i->sample_spec.rate == rate)
 620         return 0;
 621
 622     i->sample_spec.rate = rate;
 623
 624     pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
 625
 626     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 627     return 0;
 628 }
 629
 630 void pa_sink_input_set_name(pa_sink_input *i, const char *name) {
 631     pa_sink_input_assert_ref(i);
 632
 633     if (!i->name && !name)
 634         return;
 635
 636     if (i->name && name && !strcmp(i->name, name))
 637         return;
 638
 639     pa_xfree(i->name);
 640     i->name = pa_xstrdup(name);
 641
 642     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 643 }
 644
 645 pa_resample_method_t pa_sink_input_get_resample_method(pa_sink_input *i) {
 646     pa_sink_input_assert_ref(i);
 647
 648     return i->resample_method;
 649 }
 650
 651 int pa_sink_input_move_to(pa_sink_input *i, pa_sink *dest, int immediately) {
 652     pa_resampler *new_resampler = NULL;
 653     pa_sink *origin;
 654     pa_usec_t silence_usec = 0;
 655     pa_sink_input_move_info info;
 656
 657     pa_sink_input_assert_ref(i);
 658     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 659     pa_sink_assert_ref(dest);
 660
 661     origin = i->sink;
 662
 663     if (dest == origin)
 664         return 0;
 665
 666     if (i->flags & PA_SINK_INPUT_DONT_MOVE)
 667         return -1;
 668
 669     if (i->sync_next || i->sync_prev) {
 670         pa_log_warn("Moving synchronised streams not supported.");
 671         return -1;
 672     }
 673
 674     if (pa_idxset_size(dest->inputs) >= PA_MAX_INPUTS_PER_SINK) {
 675         pa_log_warn("Failed to move sink input: too many inputs per sink.");
 676         return -1;
 677     }
 678
 679     if (i->thread_info.resampler &&
 680         pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) &&
 681         pa_channel_map_equal(&origin->channel_map, &dest->channel_map))
 682
 683         /* Try to reuse the old resampler if possible */
 684         new_resampler = i->thread_info.resampler;
 685
 686     else if ((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ||
 687              !pa_sample_spec_equal(&i->sample_spec, &dest->sample_spec) ||
 688              !pa_channel_map_equal(&i->channel_map, &dest->channel_map)) {
 689
 690         /* Okey, we need a new resampler for the new sink */
 691
 692         if (!(new_resampler = pa_resampler_new(
 693                       dest->core->mempool,
 694                       &i->sample_spec, &i->channel_map,
 695                       &dest->sample_spec, &dest->channel_map,
 696                       i->resample_method,
 697                       !!(i->flags & PA_SINK_INPUT_VARIABLE_RATE)))) {
 698             pa_log_warn("Unsupported resampling operation.");
 699             return -1;
 700         }
 701     }
 702
 703     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE], i);
 704
 705     memset(&info, 0, sizeof(info));
 706     info.sink_input = i;
 707
 708     if (!immediately) {
 709         pa_usec_t old_latency, new_latency;
 710
 711         /* Let's do a little bit of Voodoo for compensating latency
 712          * differences. We assume that the accuracy for our
 713          * estimations is still good enough, even though we do these
 714          * operations non-atomic. */
 715
 716         old_latency = pa_sink_get_latency(origin);
 717         new_latency = pa_sink_get_latency(dest);
 718
 719         /* The already resampled data should go to the old sink */
 720
 721         if (old_latency >= new_latency) {
 722
 723             /* The latency of the old sink is larger than the latency
 724              * of the new sink. Therefore to compensate for the
 725              * difference we to play silence on the new one for a
 726              * while */
 727
 728             silence_usec = old_latency - new_latency;
 729
 730         } else {
 731
 732             /* The latency of new sink is larger than the latency of
 733              * the old sink. Therefore we have to precompute a little
 734              * and make sure that this is still played on the old
 735              * sink, until we can play the first sample on the new
 736              * sink.*/
 737
 738             info.buffer_bytes = pa_usec_to_bytes(new_latency - old_latency, &origin->sample_spec);
 739         }
 740
 741         /* Okey, let's move it */
 742
 743         if (info.buffer_bytes > 0) {
 744
 745             info.ghost_sink_input = pa_memblockq_sink_input_new(
 746                     origin,
 747                     "Ghost Stream",
 748                     &origin->sample_spec,
 749                     &origin->channel_map,
 750                     NULL,
 751                     NULL);
 752
 753             info.buffer = pa_memblockq_new(0, MOVE_BUFFER_LENGTH, 0, pa_frame_size(&origin->sample_spec), 0, 0, NULL);
 754         }
 755     }
 756
 757     pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_REMOVE_INPUT_AND_BUFFER, &info, 0, NULL);
 758
 759     if (info.ghost_sink_input) {
 760         /* Basically, do what pa_sink_input_put() does ...*/
 761         info.ghost_sink_input->thread_info.state = info.ghost_sink_input->state = PA_SINK_INPUT_RUNNING;
 762         info.ghost_sink_input->thread_info.volume = info.ghost_sink_input->volume;
 763         info.ghost_sink_input->thread_info.muted = info.ghost_sink_input->muted;
 764
 765         pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, info.ghost_sink_input->index);
 766         pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], info.ghost_sink_input);
 767         pa_sink_input_unref(info.ghost_sink_input);
 768     }
 769
 770     pa_idxset_remove_by_data(origin->inputs, i, NULL);
 771     pa_idxset_put(dest->inputs, i, NULL);
 772     i->sink = dest;
 773
 774     /* Replace resampler */
 775     if (new_resampler != i->thread_info.resampler) {
 776         if (i->thread_info.resampler)
 777             pa_resampler_free(i->thread_info.resampler);
 778         i->thread_info.resampler = new_resampler;
 779
 780         /* if the resampler changed, the silence memblock is
 781          * probably invalid now, too */
 782         if (i->thread_info.silence_memblock) {
 783             pa_memblock_unref(i->thread_info.silence_memblock);
 784             i->thread_info.silence_memblock = NULL;
 785         }
 786     }
 787
 788     /* Dump already resampled data */
 789     if (i->thread_info.resampled_chunk.memblock) {
 790         /* Hmm, this data has already been added to the ghost queue, presumably, hence let's sleep a little bit longer */
 791         silence_usec += pa_bytes_to_usec(i->thread_info.resampled_chunk.length, &origin->sample_spec);
 792         pa_memblock_unref(i->thread_info.resampled_chunk.memblock);
 793         pa_memchunk_reset(&i->thread_info.resampled_chunk);
 794     }
 795
 796     /* Calculate the new sleeping time */
 797     if (immediately)
 798         i->thread_info.move_silence = 0;
 799     else
 800         i->thread_info.move_silence = pa_usec_to_bytes(
 801                 pa_bytes_to_usec(i->thread_info.move_silence, &i->sample_spec) +
 802                 silence_usec,
 803                 &i->sample_spec);
 804
 805     pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_ADD_INPUT, i, 0, NULL);
 806
 807     pa_sink_update_status(origin);
 808     pa_sink_update_status(dest);
 809
 810     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_POST], i);
 811
 812     pa_log_debug("Successfully moved sink input %i from %s to %s.", i->index, origin->name, dest->name);
 813
 814     /* Notify everyone */
 815     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 816
 817     return 0;
 818 }
 819
 820 /* Called from thread context */
 821 int pa_sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 822     pa_sink_input *i = PA_SINK_INPUT(o);
 823
 824     pa_sink_input_assert_ref(i);
 825     pa_assert(PA_SINK_INPUT_LINKED(i->thread_info.state));
 826
 827     switch (code) {
 828         case PA_SINK_INPUT_MESSAGE_SET_VOLUME:
 829             i->thread_info.volume = *((pa_cvolume*) userdata);
 830             return 0;
 831
 832         case PA_SINK_INPUT_MESSAGE_SET_MUTE:
 833             i->thread_info.muted = PA_PTR_TO_UINT(userdata);
 834             return 0;
 835
 836         case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
 837             pa_usec_t *r = userdata;
 838
 839             if (i->thread_info.resampled_chunk.memblock)
 840                 *r += pa_bytes_to_usec(i->thread_info.resampled_chunk.length, &i->sink->sample_spec);
 841
 842             if (i->thread_info.move_silence)
 843                 *r += pa_bytes_to_usec(i->thread_info.move_silence, &i->sink->sample_spec);
 844
 845             return 0;
 846         }
 847
 848         case PA_SINK_INPUT_MESSAGE_SET_RATE:
 849
 850             i->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
 851             pa_resampler_set_input_rate(i->thread_info.resampler, PA_PTR_TO_UINT(userdata));
 852
 853             return 0;
 854
 855         case PA_SINK_INPUT_MESSAGE_SET_STATE: {
 856             pa_sink_input *ssync;
 857
 858             if ((PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_DRAINED || PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_RUNNING) &&
 859                 (i->thread_info.state != PA_SINK_INPUT_DRAINED) && (i->thread_info.state != PA_SINK_INPUT_RUNNING))
 860                 pa_atomic_store(&i->thread_info.drained, 1);
 861
 862             i->thread_info.state = PA_PTR_TO_UINT(userdata);
 863
 864             for (ssync = i->thread_info.sync_prev; ssync; ssync = ssync->thread_info.sync_prev) {
 865                 if ((PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_DRAINED || PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_RUNNING) &&
 866                     (ssync->thread_info.state != PA_SINK_INPUT_DRAINED) && (ssync->thread_info.state != PA_SINK_INPUT_RUNNING))
 867                     pa_atomic_store(&ssync->thread_info.drained, 1);
 868                 ssync->thread_info.state = PA_PTR_TO_UINT(userdata);
 869             }
 870
 871             for (ssync = i->thread_info.sync_next; ssync; ssync = ssync->thread_info.sync_next) {
 872                 if ((PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_DRAINED || PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_RUNNING) &&
 873                     (ssync->thread_info.state != PA_SINK_INPUT_DRAINED) && (ssync->thread_info.state != PA_SINK_INPUT_RUNNING))
 874                     pa_atomic_store(&ssync->thread_info.drained, 1);
 875                 ssync->thread_info.state = PA_PTR_TO_UINT(userdata);
 876             }
 877
 878             return 0;
 879         }
 880     }
 881
 882     return -1;
 883 }
 884
 885 pa_sink_input_state_t pa_sink_input_get_state(pa_sink_input *i) {
 886     pa_sink_input_assert_ref(i);
 887
 888     if (i->state == PA_SINK_INPUT_RUNNING || i->state == PA_SINK_INPUT_DRAINED)
 889         return pa_atomic_load(&i->thread_info.drained) ? PA_SINK_INPUT_DRAINED : PA_SINK_INPUT_RUNNING;
 890
 891     return i->state;
 892 }
 893