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 (PA_PAGE_SIZE)
  45 #define SILENCE_BUFFER_LENGTH (PA_PAGE_SIZE*12)
  46 #define MOVE_BUFFER_LENGTH (PA_PAGE_SIZE*256)
  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, pa_bool_t mute) {
  83     pa_assert(data);
  84
  85     data->muted_is_set = TRUE;
  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     i->thread_info.attached = FALSE;
 214
 215     pa_assert_se(pa_idxset_put(core->sink_inputs, pa_sink_input_ref(i), &i->index) == 0);
 216     pa_assert_se(pa_idxset_put(i->sink->inputs, i, NULL) == 0);
 217
 218     pa_log_info("Created input %u \"%s\" on %s with sample spec %s",
 219                 i->index,
 220                 i->name,
 221                 i->sink->name,
 222                 pa_sample_spec_snprint(st, sizeof(st), &i->sample_spec));
 223
 224     /* Don't forget to call pa_sink_input_put! */
 225
 226     return i;
 227 }
 228
 229 static void update_n_corked(pa_sink_input *i, pa_sink_input_state_t state) {
 230     pa_assert(i);
 231
 232     if (i->state == PA_SINK_INPUT_CORKED && state != PA_SINK_INPUT_CORKED)
 233         pa_assert_se(i->sink->n_corked -- >= 1);
 234     else if (i->state != PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_CORKED)
 235         i->sink->n_corked++;
 236 }
 237
 238 static int sink_input_set_state(pa_sink_input *i, pa_sink_input_state_t state) {
 239     pa_sink_input *ssync;
 240     pa_assert(i);
 241
 242     if (state == PA_SINK_INPUT_DRAINED)
 243         state = PA_SINK_INPUT_RUNNING;
 244
 245     if (i->state == state)
 246         return 0;
 247
 248     if (pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0)
 249         return -1;
 250
 251     update_n_corked(i, state);
 252     i->state = state;
 253
 254     for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev) {
 255         update_n_corked(ssync, state);
 256         ssync->state = state;
 257     }
 258     for (ssync = i->sync_next; ssync; ssync = ssync->sync_next) {
 259         update_n_corked(ssync, state);
 260         ssync->state = state;
 261     }
 262
 263     return 0;
 264 }
 265
 266 void pa_sink_input_unlink(pa_sink_input *i) {
 267     pa_bool_t linked;
 268     pa_assert(i);
 269
 270     /* See pa_sink_unlink() for a couple of comments how this function
 271      * works */
 272
 273     pa_sink_input_ref(i);
 274
 275     linked = PA_SINK_INPUT_LINKED(i->state);
 276
 277     if (linked)
 278         pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK], i);
 279
 280     if (i->sync_prev)
 281         i->sync_prev->sync_next = i->sync_next;
 282     if (i->sync_next)
 283         i->sync_next->sync_prev = i->sync_prev;
 284
 285     i->sync_prev = i->sync_next = NULL;
 286
 287     pa_idxset_remove_by_data(i->sink->core->sink_inputs, i, NULL);
 288     if (pa_idxset_remove_by_data(i->sink->inputs, i, NULL))
 289         pa_sink_input_unref(i);
 290
 291     if (linked) {
 292         pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_REMOVE_INPUT, i, 0, NULL);
 293         sink_input_set_state(i, PA_SINK_INPUT_UNLINKED);
 294         pa_sink_update_status(i->sink);
 295     } else
 296         i->state = PA_SINK_INPUT_UNLINKED;
 297
 298     i->peek = NULL;
 299     i->drop = NULL;
 300     i->kill = NULL;
 301     i->get_latency = NULL;
 302     i->attach = NULL;
 303     i->detach = NULL;
 304     i->suspend = NULL;
 305
 306     if (linked) {
 307         pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_REMOVE, i->index);
 308         pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST], i);
 309     }
 310
 311     i->sink = NULL;
 312     pa_sink_input_unref(i);
 313 }
 314
 315 static void sink_input_free(pa_object *o) {
 316     pa_sink_input* i = PA_SINK_INPUT(o);
 317
 318     pa_assert(i);
 319     pa_assert(pa_sink_input_refcnt(i) == 0);
 320
 321     if (PA_SINK_INPUT_LINKED(i->state))
 322         pa_sink_input_unlink(i);
 323
 324     pa_log_info("Freeing output %u \"%s\"", i->index, i->name);
 325
 326     pa_assert(!i->thread_info.attached);
 327
 328     if (i->thread_info.resampled_chunk.memblock)
 329         pa_memblock_unref(i->thread_info.resampled_chunk.memblock);
 330
 331     if (i->thread_info.resampler)
 332         pa_resampler_free(i->thread_info.resampler);
 333
 334     if (i->thread_info.silence_memblock)
 335         pa_memblock_unref(i->thread_info.silence_memblock);
 336
 337     pa_xfree(i->name);
 338     pa_xfree(i->driver);
 339     pa_xfree(i);
 340 }
 341
 342 void pa_sink_input_put(pa_sink_input *i) {
 343     pa_sink_input_assert_ref(i);
 344
 345     pa_assert(i->state == PA_SINK_INPUT_INIT);
 346     pa_assert(i->peek);
 347     pa_assert(i->drop);
 348
 349     i->thread_info.state = i->state = i->flags & PA_SINK_INPUT_START_CORKED ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING;
 350     i->thread_info.volume = i->volume;
 351     i->thread_info.muted = i->muted;
 352
 353     pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_ADD_INPUT, i, 0, NULL);
 354     pa_sink_update_status(i->sink);
 355
 356     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, i->index);
 357     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], i);
 358
 359     /* Please note that if you change something here, you have to
 360        change something in pa_sink_input_move() with the ghost stream
 361        registration too. */
 362 }
 363
 364 void pa_sink_input_kill(pa_sink_input*i) {
 365     pa_sink_input_assert_ref(i);
 366     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 367
 368     if (i->kill)
 369         i->kill(i);
 370 }
 371
 372 pa_usec_t pa_sink_input_get_latency(pa_sink_input *i) {
 373     pa_usec_t r = 0;
 374
 375     pa_sink_input_assert_ref(i);
 376     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 377
 378     if (pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_LATENCY, &r, 0, NULL) < 0)
 379         r = 0;
 380
 381     if (i->get_latency)
 382         r += i->get_latency(i);
 383
 384     return r;
 385 }
 386
 387 /* Called from thread context */
 388 int pa_sink_input_peek(pa_sink_input *i, size_t length, pa_memchunk *chunk, pa_cvolume *volume) {
 389     int ret = -1;
 390     int do_volume_adj_here;
 391     int volume_is_norm;
 392     size_t block_size_max;
 393
 394     pa_sink_input_assert_ref(i);
 395     pa_assert(PA_SINK_INPUT_LINKED(i->thread_info.state));
 396     pa_assert(pa_frame_aligned(length, &i->sink->sample_spec));
 397     pa_assert(chunk);
 398     pa_assert(volume);
 399
 400     if (!i->peek || !i->drop || i->thread_info.state == PA_SINK_INPUT_CORKED)
 401         goto finish;
 402
 403     pa_assert(i->thread_info.state == PA_SINK_INPUT_RUNNING || i->thread_info.state == PA_SINK_INPUT_DRAINED);
 404
 405     /* Default buffer size */
 406     if (length <= 0)
 407         length = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sink->sample_spec);
 408
 409     /* Make sure the buffer fits in the mempool tile */
 410     block_size_max = pa_mempool_block_size_max(i->sink->core->mempool);
 411     if (length > block_size_max)
 412         length = pa_frame_align(block_size_max, &i->sink->sample_spec);
 413
 414     if (i->thread_info.move_silence > 0) {
 415         size_t l;
 416
 417         /* We have just been moved and shall play some silence for a
 418          * while until the old sink has drained its playback buffer */
 419
 420         if (!i->thread_info.silence_memblock)
 421             i->thread_info.silence_memblock = pa_silence_memblock_new(
 422                     i->sink->core->mempool,
 423                     &i->sink->sample_spec,
 424                     pa_frame_align(SILENCE_BUFFER_LENGTH, &i->sink->sample_spec));
 425
 426         chunk->memblock = pa_memblock_ref(i->thread_info.silence_memblock);
 427         chunk->index = 0;
 428         l = pa_memblock_get_length(chunk->memblock);
 429         chunk->length = i->thread_info.move_silence < l ? i->thread_info.move_silence : l;
 430
 431         ret = 0;
 432         do_volume_adj_here = 1;
 433         goto finish;
 434     }
 435
 436     if (!i->thread_info.resampler) {
 437         do_volume_adj_here = 0; /* FIXME??? */
 438         ret = i->peek(i, length, chunk);
 439         goto finish;
 440     }
 441
 442     do_volume_adj_here = !pa_channel_map_equal(&i->channel_map, &i->sink->channel_map);
 443     volume_is_norm = pa_cvolume_is_norm(&i->thread_info.volume) && !i->thread_info.muted;
 444
 445     while (!i->thread_info.resampled_chunk.memblock) {
 446         pa_memchunk tchunk;
 447         size_t l, rmbs;
 448
 449         l = pa_resampler_request(i->thread_info.resampler, length);
 450
 451         if (l <= 0)
 452             l = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sample_spec);
 453
 454         rmbs = pa_resampler_max_block_size(i->thread_info.resampler);
 455         if (l > rmbs)
 456             l = rmbs;
 457
 458         if ((ret = i->peek(i, l, &tchunk)) < 0)
 459             goto finish;
 460
 461         pa_assert(tchunk.length > 0);
 462
 463         if (tchunk.length > l)
 464             tchunk.length = l;
 465
 466         i->drop(i, tchunk.length);
 467
 468         /* It might be necessary to adjust the volume here */
 469         if (do_volume_adj_here && !volume_is_norm) {
 470             pa_memchunk_make_writable(&tchunk, 0);
 471
 472             if (i->thread_info.muted)
 473                 pa_silence_memchunk(&tchunk, &i->thread_info.sample_spec);
 474             else
 475                 pa_volume_memchunk(&tchunk, &i->thread_info.sample_spec, &i->thread_info.volume);
 476         }
 477
 478         pa_resampler_run(i->thread_info.resampler, &tchunk, &i->thread_info.resampled_chunk);
 479         pa_memblock_unref(tchunk.memblock);
 480     }
 481
 482     pa_assert(i->thread_info.resampled_chunk.memblock);
 483     pa_assert(i->thread_info.resampled_chunk.length > 0);
 484
 485     *chunk = i->thread_info.resampled_chunk;
 486     pa_memblock_ref(i->thread_info.resampled_chunk.memblock);
 487
 488     ret = 0;
 489
 490 finish:
 491
 492     if (ret >= 0)
 493         pa_atomic_store(&i->thread_info.drained, 0);
 494     else if (ret < 0)
 495         pa_atomic_store(&i->thread_info.drained, 1);
 496
 497     if (ret >= 0) {
 498         /* Let's see if we had to apply the volume adjustment
 499          * ourselves, or if this can be done by the sink for us */
 500
 501         if (do_volume_adj_here)
 502             /* We had different channel maps, so we already did the adjustment */
 503             pa_cvolume_reset(volume, i->sink->sample_spec.channels);
 504         else if (i->thread_info.muted)
 505             /* We've both the same channel map, so let's have the sink do the adjustment for us*/
 506             pa_cvolume_mute(volume, i->sink->sample_spec.channels);
 507         else
 508             *volume = i->thread_info.volume;
 509     }
 510
 511     return ret;
 512 }
 513
 514 /* Called from thread context */
 515 void pa_sink_input_drop(pa_sink_input *i, size_t length) {
 516     pa_sink_input_assert_ref(i);
 517     pa_assert(PA_SINK_INPUT_LINKED(i->thread_info.state));
 518     pa_assert(pa_frame_aligned(length, &i->sink->sample_spec));
 519     pa_assert(length > 0);
 520
 521     if (!i->peek || !i->drop || i->thread_info.state == PA_SINK_INPUT_CORKED)
 522         return;
 523
 524     if (i->thread_info.move_silence > 0) {
 525
 526         if (i->thread_info.move_silence >= length) {
 527             i->thread_info.move_silence -= length;
 528             length = 0;
 529         } else {
 530             length -= i->thread_info.move_silence;
 531             i->thread_info.move_silence = 0;
 532         }
 533
 534         if (i->thread_info.move_silence <= 0) {
 535             pa_assert(i->thread_info.silence_memblock);
 536             pa_memblock_unref(i->thread_info.silence_memblock);
 537             i->thread_info.silence_memblock = NULL;
 538         }
 539
 540         if (length <= 0)
 541             return;
 542     }
 543
 544     if (i->thread_info.resampled_chunk.memblock) {
 545         size_t l = length;
 546
 547         if (l > i->thread_info.resampled_chunk.length)
 548             l = i->thread_info.resampled_chunk.length;
 549
 550         i->thread_info.resampled_chunk.index += l;
 551         i->thread_info.resampled_chunk.length -= l;
 552
 553         if (i->thread_info.resampled_chunk.length <= 0) {
 554             pa_memblock_unref(i->thread_info.resampled_chunk.memblock);
 555             pa_memchunk_reset(&i->thread_info.resampled_chunk);
 556         }
 557
 558         length -= l;
 559     }
 560
 561     if (length > 0) {
 562
 563         if (i->thread_info.resampler) {
 564             /* So, we have a resampler. To avoid discontinuities we
 565              * have to actually read all data that could be read and
 566              * pass it through the resampler. */
 567
 568             while (length > 0) {
 569                 pa_memchunk chunk;
 570                 pa_cvolume volume;
 571
 572                 if (pa_sink_input_peek(i, length, &chunk, &volume) >= 0) {
 573                     size_t l;
 574
 575                     pa_memblock_unref(chunk.memblock);
 576
 577                     l = chunk.length;
 578                     if (l > length)
 579                         l = length;
 580
 581                     pa_sink_input_drop(i, l);
 582                     length -= l;
 583
 584                 } else {
 585                     size_t l;
 586
 587                     l = pa_resampler_request(i->thread_info.resampler, length);
 588
 589                     /* Hmmm, peeking failed, so let's at least drop
 590                      * the right amount of data */
 591
 592                     if (l > 0)
 593                         if (i->drop)
 594                             i->drop(i, l);
 595
 596                     break;
 597                 }
 598             }
 599
 600         } else {
 601
 602             /* We have no resampler, hence let's just drop the data */
 603
 604             if (i->drop)
 605                 i->drop(i, length);
 606         }
 607     }
 608 }
 609
 610 void pa_sink_input_set_volume(pa_sink_input *i, const pa_cvolume *volume) {
 611     pa_sink_input_assert_ref(i);
 612     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 613
 614     if (pa_cvolume_equal(&i->volume, volume))
 615         return;
 616
 617     i->volume = *volume;
 618
 619     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);
 620     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 621 }
 622
 623 const pa_cvolume *pa_sink_input_get_volume(pa_sink_input *i) {
 624     pa_sink_input_assert_ref(i);
 625     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 626
 627     return &i->volume;
 628 }
 629
 630 void pa_sink_input_set_mute(pa_sink_input *i, pa_bool_t mute) {
 631     pa_assert(i);
 632     pa_sink_input_assert_ref(i);
 633     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 634
 635     if (!i->muted == !mute)
 636         return;
 637
 638     i->muted = mute;
 639
 640     pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL);
 641     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 642 }
 643
 644 int pa_sink_input_get_mute(pa_sink_input *i) {
 645     pa_sink_input_assert_ref(i);
 646     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 647
 648     return !!i->muted;
 649 }
 650
 651 void pa_sink_input_cork(pa_sink_input *i, pa_bool_t b) {
 652     pa_sink_input_assert_ref(i);
 653     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 654
 655     sink_input_set_state(i, b ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING);
 656 }
 657
 658 int pa_sink_input_set_rate(pa_sink_input *i, uint32_t rate) {
 659     pa_sink_input_assert_ref(i);
 660     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 661     pa_return_val_if_fail(i->thread_info.resampler, -1);
 662
 663     if (i->sample_spec.rate == rate)
 664         return 0;
 665
 666     i->sample_spec.rate = rate;
 667
 668     pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
 669
 670     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 671     return 0;
 672 }
 673
 674 void pa_sink_input_set_name(pa_sink_input *i, const char *name) {
 675     pa_sink_input_assert_ref(i);
 676
 677     if (!i->name && !name)
 678         return;
 679
 680     if (i->name && name && !strcmp(i->name, name))
 681         return;
 682
 683     pa_xfree(i->name);
 684     i->name = pa_xstrdup(name);
 685
 686     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 687 }
 688
 689 pa_resample_method_t pa_sink_input_get_resample_method(pa_sink_input *i) {
 690     pa_sink_input_assert_ref(i);
 691
 692     return i->resample_method;
 693 }
 694
 695 int pa_sink_input_move_to(pa_sink_input *i, pa_sink *dest, int immediately) {
 696     pa_resampler *new_resampler;
 697     pa_sink *origin;
 698     pa_usec_t silence_usec = 0;
 699     pa_sink_input_move_info info;
 700
 701     pa_sink_input_assert_ref(i);
 702     pa_assert(PA_SINK_INPUT_LINKED(i->state));
 703     pa_sink_assert_ref(dest);
 704
 705     origin = i->sink;
 706
 707     if (dest == origin)
 708         return 0;
 709
 710     if (i->flags & PA_SINK_INPUT_DONT_MOVE)
 711         return -1;
 712
 713     if (i->sync_next || i->sync_prev) {
 714         pa_log_warn("Moving synchronised streams not supported.");
 715         return -1;
 716     }
 717
 718     if (pa_idxset_size(dest->inputs) >= PA_MAX_INPUTS_PER_SINK) {
 719         pa_log_warn("Failed to move sink input: too many inputs per sink.");
 720         return -1;
 721     }
 722
 723     if (i->thread_info.resampler &&
 724         pa_sample_spec_equal(&origin->sample_spec, &dest->sample_spec) &&
 725         pa_channel_map_equal(&origin->channel_map, &dest->channel_map))
 726
 727         /* Try to reuse the old resampler if possible */
 728         new_resampler = i->thread_info.resampler;
 729
 730     else if ((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ||
 731              !pa_sample_spec_equal(&i->sample_spec, &dest->sample_spec) ||
 732              !pa_channel_map_equal(&i->channel_map, &dest->channel_map)) {
 733
 734         /* Okey, we need a new resampler for the new sink */
 735
 736         if (!(new_resampler = pa_resampler_new(
 737                       dest->core->mempool,
 738                       &i->sample_spec, &i->channel_map,
 739                       &dest->sample_spec, &dest->channel_map,
 740                       i->resample_method,
 741                       !!(i->flags & PA_SINK_INPUT_VARIABLE_RATE)))) {
 742             pa_log_warn("Unsupported resampling operation.");
 743             return -1;
 744         }
 745     } else
 746         new_resampler = NULL;
 747
 748     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE], i);
 749
 750     memset(&info, 0, sizeof(info));
 751     info.sink_input = i;
 752
 753     if (!immediately) {
 754         pa_usec_t old_latency, new_latency;
 755
 756         /* Let's do a little bit of Voodoo for compensating latency
 757          * differences. We assume that the accuracy for our
 758          * estimations is still good enough, even though we do these
 759          * operations non-atomic. */
 760
 761         old_latency = pa_sink_get_latency(origin);
 762         new_latency = pa_sink_get_latency(dest);
 763
 764         /* The already resampled data should go to the old sink */
 765
 766         if (old_latency >= new_latency) {
 767
 768             /* The latency of the old sink is larger than the latency
 769              * of the new sink. Therefore to compensate for the
 770              * difference we to play silence on the new one for a
 771              * while */
 772
 773             silence_usec = old_latency - new_latency;
 774
 775         } else {
 776
 777             /* The latency of new sink is larger than the latency of
 778              * the old sink. Therefore we have to precompute a little
 779              * and make sure that this is still played on the old
 780              * sink, until we can play the first sample on the new
 781              * sink.*/
 782
 783             info.buffer_bytes = pa_usec_to_bytes(new_latency - old_latency, &origin->sample_spec);
 784         }
 785
 786         /* Okey, let's move it */
 787
 788         if (info.buffer_bytes > 0) {
 789
 790             info.ghost_sink_input = pa_memblockq_sink_input_new(
 791                     origin,
 792                     "Ghost Stream",
 793                     &origin->sample_spec,
 794                     &origin->channel_map,
 795                     NULL,
 796                     NULL);
 797
 798             info.ghost_sink_input->thread_info.state = info.ghost_sink_input->state = PA_SINK_INPUT_RUNNING;
 799             info.ghost_sink_input->thread_info.volume = info.ghost_sink_input->volume;
 800             info.ghost_sink_input->thread_info.muted = info.ghost_sink_input->muted;
 801
 802             info.buffer = pa_memblockq_new(0, MOVE_BUFFER_LENGTH, 0, pa_frame_size(&origin->sample_spec), 0, 0, NULL);
 803         }
 804     }
 805
 806     pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_REMOVE_INPUT_AND_BUFFER, &info, 0, NULL);
 807
 808     if (info.ghost_sink_input) {
 809         /* Basically, do what pa_sink_input_put() does ...*/
 810
 811         pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, info.ghost_sink_input->index);
 812         pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], info.ghost_sink_input);
 813         pa_sink_input_unref(info.ghost_sink_input);
 814     }
 815
 816     pa_idxset_remove_by_data(origin->inputs, i, NULL);
 817     pa_idxset_put(dest->inputs, i, NULL);
 818     i->sink = dest;
 819
 820     /* Replace resampler */
 821     if (new_resampler != i->thread_info.resampler) {
 822         if (i->thread_info.resampler)
 823             pa_resampler_free(i->thread_info.resampler);
 824         i->thread_info.resampler = new_resampler;
 825
 826         /* if the resampler changed, the silence memblock is
 827          * probably invalid now, too */
 828         if (i->thread_info.silence_memblock) {
 829             pa_memblock_unref(i->thread_info.silence_memblock);
 830             i->thread_info.silence_memblock = NULL;
 831         }
 832     }
 833
 834     /* Dump already resampled data */
 835     if (i->thread_info.resampled_chunk.memblock) {
 836         /* Hmm, this data has already been added to the ghost queue, presumably, hence let's sleep a little bit longer */
 837         silence_usec += pa_bytes_to_usec(i->thread_info.resampled_chunk.length, &origin->sample_spec);
 838         pa_memblock_unref(i->thread_info.resampled_chunk.memblock);
 839         pa_memchunk_reset(&i->thread_info.resampled_chunk);
 840     }
 841
 842     /* Calculate the new sleeping time */
 843     if (immediately)
 844         i->thread_info.move_silence = 0;
 845     else
 846         i->thread_info.move_silence = pa_usec_to_bytes(
 847                 pa_bytes_to_usec(i->thread_info.move_silence, &origin->sample_spec) +
 848                 silence_usec,
 849                 &dest->sample_spec);
 850
 851     pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_ADD_INPUT, i, 0, NULL);
 852
 853     pa_sink_update_status(origin);
 854     pa_sink_update_status(dest);
 855
 856     pa_hook_fire(&i->sink->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_POST], i);
 857
 858     pa_log_debug("Successfully moved sink input %i from %s to %s.", i->index, origin->name, dest->name);
 859
 860     /* Notify everyone */
 861     pa_subscription_post(i->sink->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 862
 863     return 0;
 864 }
 865
 866 /* Called from thread context */
 867 int pa_sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
 868     pa_sink_input *i = PA_SINK_INPUT(o);
 869
 870     pa_sink_input_assert_ref(i);
 871     pa_assert(PA_SINK_INPUT_LINKED(i->thread_info.state));
 872
 873     switch (code) {
 874         case PA_SINK_INPUT_MESSAGE_SET_VOLUME:
 875             i->thread_info.volume = *((pa_cvolume*) userdata);
 876             return 0;
 877
 878         case PA_SINK_INPUT_MESSAGE_SET_MUTE:
 879             i->thread_info.muted = PA_PTR_TO_UINT(userdata);
 880             return 0;
 881
 882         case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
 883             pa_usec_t *r = userdata;
 884
 885             if (i->thread_info.resampled_chunk.memblock)
 886                 *r += pa_bytes_to_usec(i->thread_info.resampled_chunk.length, &i->sink->sample_spec);
 887
 888             if (i->thread_info.move_silence)
 889                 *r += pa_bytes_to_usec(i->thread_info.move_silence, &i->sink->sample_spec);
 890
 891             return 0;
 892         }
 893
 894         case PA_SINK_INPUT_MESSAGE_SET_RATE:
 895
 896             i->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
 897             pa_resampler_set_input_rate(i->thread_info.resampler, PA_PTR_TO_UINT(userdata));
 898
 899             return 0;
 900
 901         case PA_SINK_INPUT_MESSAGE_SET_STATE: {
 902             pa_sink_input *ssync;
 903
 904             if ((PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_DRAINED || PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_RUNNING) &&
 905                 (i->thread_info.state != PA_SINK_INPUT_DRAINED) && (i->thread_info.state != PA_SINK_INPUT_RUNNING))
 906                 pa_atomic_store(&i->thread_info.drained, 1);
 907
 908             i->thread_info.state = PA_PTR_TO_UINT(userdata);
 909
 910             for (ssync = i->thread_info.sync_prev; ssync; ssync = ssync->thread_info.sync_prev) {
 911                 if ((PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_DRAINED || PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_RUNNING) &&
 912                     (ssync->thread_info.state != PA_SINK_INPUT_DRAINED) && (ssync->thread_info.state != PA_SINK_INPUT_RUNNING))
 913                     pa_atomic_store(&ssync->thread_info.drained, 1);
 914                 ssync->thread_info.state = PA_PTR_TO_UINT(userdata);
 915             }
 916
 917             for (ssync = i->thread_info.sync_next; ssync; ssync = ssync->thread_info.sync_next) {
 918                 if ((PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_DRAINED || PA_PTR_TO_UINT(userdata) == PA_SINK_INPUT_RUNNING) &&
 919                     (ssync->thread_info.state != PA_SINK_INPUT_DRAINED) && (ssync->thread_info.state != PA_SINK_INPUT_RUNNING))
 920                     pa_atomic_store(&ssync->thread_info.drained, 1);
 921                 ssync->thread_info.state = PA_PTR_TO_UINT(userdata);
 922             }
 923
 924             return 0;
 925         }
 926     }
 927
 928     return -1;
 929 }
 930
 931 pa_sink_input_state_t pa_sink_input_get_state(pa_sink_input *i) {
 932     pa_sink_input_assert_ref(i);
 933
 934     if (i->state == PA_SINK_INPUT_RUNNING || i->state == PA_SINK_INPUT_DRAINED)
 935         return pa_atomic_load(&i->thread_info.drained) ? PA_SINK_INPUT_DRAINED : PA_SINK_INPUT_RUNNING;
 936
 937     return i->state;
 938 }