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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include <pulse/utf8.h>
  32 #include <pulse/xmalloc.h>
  33 #include <pulse/util.h>
  34
  35 #include <pulsecore/sample-util.h>
  36 #include <pulsecore/core-subscribe.h>
  37 #include <pulsecore/log.h>
  38 #include <pulsecore/play-memblockq.h>
  39 #include <pulsecore/namereg.h>
  40 #include <pulsecore/core-util.h>
  41
  42 #include "sink-input.h"
  43
  44 #define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
  45 #define CONVERT_BUFFER_LENGTH (PA_PAGE_SIZE)
  46
  47 static PA_DEFINE_CHECK_TYPE(pa_sink_input, pa_msgobject);
  48
  49 static void sink_input_free(pa_object *o);
  50
  51 pa_sink_input_new_data* pa_sink_input_new_data_init(pa_sink_input_new_data *data) {
  52     pa_assert(data);
  53
  54     memset(data, 0, sizeof(*data));
  55     data->resample_method = PA_RESAMPLER_INVALID;
  56     data->proplist = pa_proplist_new();
  57
  58     return data;
  59 }
  60
  61 void pa_sink_input_new_data_set_sample_spec(pa_sink_input_new_data *data, const pa_sample_spec *spec) {
  62     pa_assert(data);
  63
  64     if ((data->sample_spec_is_set = !!spec))
  65         data->sample_spec = *spec;
  66 }
  67
  68 void pa_sink_input_new_data_set_channel_map(pa_sink_input_new_data *data, const pa_channel_map *map) {
  69     pa_assert(data);
  70
  71     if ((data->channel_map_is_set = !!map))
  72         data->channel_map = *map;
  73 }
  74
  75 void pa_sink_input_new_data_set_volume(pa_sink_input_new_data *data, const pa_cvolume *volume) {
  76     pa_assert(data);
  77
  78     if ((data->volume_is_set = !!volume))
  79         data->volume = *volume;
  80 }
  81
  82 void pa_sink_input_new_data_apply_volume_factor(pa_sink_input_new_data *data, const pa_cvolume *volume_factor) {
  83     pa_assert(data);
  84     pa_assert(volume_factor);
  85
  86     if (data->volume_factor_is_set)
  87         pa_sw_cvolume_multiply(&data->volume_factor, &data->volume_factor, volume_factor);
  88     else {
  89         data->volume_factor_is_set = TRUE;
  90         data->volume_factor = *volume_factor;
  91     }
  92 }
  93
  94 void pa_sink_input_new_data_set_muted(pa_sink_input_new_data *data, pa_bool_t mute) {
  95     pa_assert(data);
  96
  97     data->muted_is_set = TRUE;
  98     data->muted = !!mute;
  99 }
 100
 101 void pa_sink_input_new_data_done(pa_sink_input_new_data *data) {
 102     pa_assert(data);
 103
 104     pa_proplist_free(data->proplist);
 105 }
 106
 107 /* Called from main context */
 108 static void reset_callbacks(pa_sink_input *i) {
 109     pa_assert(i);
 110
 111     i->pop = NULL;
 112     i->process_rewind = NULL;
 113     i->update_max_rewind = NULL;
 114     i->update_max_request = NULL;
 115     i->update_sink_requested_latency = NULL;
 116     i->update_sink_latency_range = NULL;
 117     i->attach = NULL;
 118     i->detach = NULL;
 119     i->suspend = NULL;
 120     i->moved = NULL;
 121     i->kill = NULL;
 122     i->get_latency = NULL;
 123     i->state_change = NULL;
 124     i->may_move_to = NULL;
 125     i->send_event = NULL;
 126 }
 127
 128 /* Called from main context */
 129 int pa_sink_input_new(
 130         pa_sink_input **_i,
 131         pa_core *core,
 132         pa_sink_input_new_data *data,
 133         pa_sink_input_flags_t flags) {
 134
 135     pa_sink_input *i;
 136     pa_resampler *resampler = NULL;
 137     char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
 138     pa_channel_map original_cm;
 139     int r;
 140
 141     pa_assert(_i);
 142     pa_assert(core);
 143     pa_assert(data);
 144
 145     if (data->client)
 146         pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->client->proplist);
 147
 148     if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], data)) < 0)
 149         return r;
 150
 151     pa_return_val_if_fail(!data->driver || pa_utf8_valid(data->driver), -PA_ERR_INVALID);
 152
 153     if (!data->sink) {
 154         data->sink = pa_namereg_get(core, NULL, PA_NAMEREG_SINK);
 155         data->save_sink = FALSE;
 156     }
 157
 158     pa_return_val_if_fail(data->sink, -PA_ERR_NOENTITY);
 159     pa_return_val_if_fail(PA_SINK_IS_LINKED(pa_sink_get_state(data->sink)), -PA_ERR_BADSTATE);
 160     pa_return_val_if_fail(!data->sync_base || (data->sync_base->sink == data->sink && pa_sink_input_get_state(data->sync_base) == PA_SINK_INPUT_CORKED), -PA_ERR_INVALID);
 161
 162     if (!data->sample_spec_is_set)
 163         data->sample_spec = data->sink->sample_spec;
 164
 165     pa_return_val_if_fail(pa_sample_spec_valid(&data->sample_spec), -PA_ERR_INVALID);
 166
 167     if (!data->channel_map_is_set) {
 168         if (pa_channel_map_compatible(&data->sink->channel_map, &data->sample_spec))
 169             data->channel_map = data->sink->channel_map;
 170         else
 171             pa_channel_map_init_extend(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT);
 172     }
 173
 174     pa_return_val_if_fail(pa_channel_map_valid(&data->channel_map), -PA_ERR_INVALID);
 175     pa_return_val_if_fail(pa_channel_map_compatible(&data->channel_map, &data->sample_spec), -PA_ERR_INVALID);
 176
 177     if (!data->volume_is_set) {
 178
 179         if (data->sink->flags & PA_SINK_FLAT_VOLUME) {
 180             data->volume = *pa_sink_get_volume(data->sink, FALSE);
 181             pa_cvolume_remap(&data->volume, &data->sink->channel_map, &data->channel_map);
 182             data->volume_is_absolute = TRUE;
 183         } else {
 184             pa_cvolume_reset(&data->volume, data->sample_spec.channels);
 185             data->volume_is_absolute = FALSE;
 186         }
 187
 188         data->save_volume = FALSE;
 189     }
 190
 191     pa_return_val_if_fail(pa_cvolume_valid(&data->volume), -PA_ERR_INVALID);
 192     pa_return_val_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec), -PA_ERR_INVALID);
 193
 194     if (!data->volume_factor_is_set)
 195         pa_cvolume_reset(&data->volume_factor, data->sample_spec.channels);
 196
 197     pa_return_val_if_fail(pa_cvolume_valid(&data->volume_factor), -PA_ERR_INVALID);
 198     pa_return_val_if_fail(pa_cvolume_compatible(&data->volume_factor, &data->sample_spec), -PA_ERR_INVALID);
 199
 200     if (!data->muted_is_set)
 201         data->muted = FALSE;
 202
 203     if (flags & PA_SINK_INPUT_FIX_FORMAT)
 204         data->sample_spec.format = data->sink->sample_spec.format;
 205
 206     if (flags & PA_SINK_INPUT_FIX_RATE)
 207         data->sample_spec.rate = data->sink->sample_spec.rate;
 208
 209     original_cm = data->channel_map;
 210
 211     if (flags & PA_SINK_INPUT_FIX_CHANNELS) {
 212         data->sample_spec.channels = data->sink->sample_spec.channels;
 213         data->channel_map = data->sink->channel_map;
 214     }
 215
 216     pa_assert(pa_sample_spec_valid(&data->sample_spec));
 217     pa_assert(pa_channel_map_valid(&data->channel_map));
 218
 219     /* Due to the fixing of the sample spec the volume might not match anymore */
 220     pa_cvolume_remap(&data->volume, &original_cm, &data->channel_map);
 221
 222     if (data->resample_method == PA_RESAMPLER_INVALID)
 223         data->resample_method = core->resample_method;
 224
 225     pa_return_val_if_fail(data->resample_method < PA_RESAMPLER_MAX, -PA_ERR_INVALID);
 226
 227     if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], data)) < 0)
 228         return r;
 229
 230     if ((flags & PA_SINK_INPUT_FAIL_ON_SUSPEND) &&
 231         pa_sink_get_state(data->sink) == PA_SINK_SUSPENDED) {
 232         pa_log_warn("Failed to create sink input: sink is suspended.");
 233         return -PA_ERR_BADSTATE;
 234     }
 235
 236     if (pa_idxset_size(data->sink->inputs) >= PA_MAX_INPUTS_PER_SINK) {
 237         pa_log_warn("Failed to create sink input: too many inputs per sink.");
 238         return -PA_ERR_TOOLARGE;
 239     }
 240
 241     if ((flags & PA_SINK_INPUT_VARIABLE_RATE) ||
 242         !pa_sample_spec_equal(&data->sample_spec, &data->sink->sample_spec) ||
 243         !pa_channel_map_equal(&data->channel_map, &data->sink->channel_map)) {
 244
 245         if (!(resampler = pa_resampler_new(
 246                       core->mempool,
 247                       &data->sample_spec, &data->channel_map,
 248                       &data->sink->sample_spec, &data->sink->channel_map,
 249                       data->resample_method,
 250                       ((flags & PA_SINK_INPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
 251                       ((flags & PA_SINK_INPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
 252                       (core->disable_remixing || (flags & PA_SINK_INPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
 253                       (core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0)))) {
 254             pa_log_warn("Unsupported resampling operation.");
 255             return -PA_ERR_NOTSUPPORTED;
 256         }
 257     }
 258
 259     i = pa_msgobject_new(pa_sink_input);
 260     i->parent.parent.free = sink_input_free;
 261     i->parent.process_msg = pa_sink_input_process_msg;
 262
 263     i->core = core;
 264     i->state = PA_SINK_INPUT_INIT;
 265     i->flags = flags;
 266     i->proplist = pa_proplist_copy(data->proplist);
 267     i->driver = pa_xstrdup(pa_path_get_filename(data->driver));
 268     i->module = data->module;
 269     i->sink = data->sink;
 270     i->client = data->client;
 271
 272     i->requested_resample_method = data->resample_method;
 273     i->actual_resample_method = resampler ? pa_resampler_get_method(resampler) : PA_RESAMPLER_INVALID;
 274     i->sample_spec = data->sample_spec;
 275     i->channel_map = data->channel_map;
 276
 277     if ((i->sink->flags & PA_SINK_FLAT_VOLUME) && !data->volume_is_absolute) {
 278         /* When the 'absolute' bool is not set then we'll treat the volume
 279          * as relative to the sink volume even in flat volume mode */
 280
 281         pa_cvolume t = *pa_sink_get_volume(data->sink, FALSE);
 282         pa_cvolume_remap(&t, &data->sink->channel_map, &data->channel_map);
 283
 284         pa_sw_cvolume_multiply(&i->virtual_volume, &data->volume, &t);
 285     } else
 286         i->virtual_volume = data->volume;
 287
 288     i->volume_factor = data->volume_factor;
 289     pa_cvolume_init(&i->soft_volume);
 290     i->save_volume = data->save_volume;
 291     i->save_sink = data->save_sink;
 292     i->save_muted = data->save_muted;
 293
 294     i->muted = data->muted;
 295
 296     if (data->sync_base) {
 297         i->sync_next = data->sync_base->sync_next;
 298         i->sync_prev = data->sync_base;
 299
 300         if (data->sync_base->sync_next)
 301             data->sync_base->sync_next->sync_prev = i;
 302         data->sync_base->sync_next = i;
 303     } else
 304         i->sync_next = i->sync_prev = NULL;
 305
 306     i->direct_outputs = pa_idxset_new(NULL, NULL);
 307
 308     reset_callbacks(i);
 309     i->userdata = NULL;
 310
 311     i->thread_info.state = i->state;
 312     i->thread_info.attached = FALSE;
 313     pa_atomic_store(&i->thread_info.drained, 1);
 314     i->thread_info.sample_spec = i->sample_spec;
 315     i->thread_info.resampler = resampler;
 316     i->thread_info.soft_volume = i->soft_volume;
 317     i->thread_info.muted = i->muted;
 318     i->thread_info.requested_sink_latency = (pa_usec_t) -1;
 319     i->thread_info.rewrite_nbytes = 0;
 320     i->thread_info.rewrite_flush = FALSE;
 321     i->thread_info.dont_rewind_render = FALSE;
 322     i->thread_info.underrun_for = (uint64_t) -1;
 323     i->thread_info.playing_for = 0;
 324     i->thread_info.direct_outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 325
 326     i->thread_info.render_memblockq = pa_memblockq_new(
 327             0,
 328             MEMBLOCKQ_MAXLENGTH,
 329             0,
 330             pa_frame_size(&i->sink->sample_spec),
 331             0,
 332             1,
 333             0,
 334             &i->sink->silence);
 335
 336     pa_assert_se(pa_idxset_put(core->sink_inputs, pa_sink_input_ref(i), &i->index) == 0);
 337     pa_assert_se(pa_idxset_put(i->sink->inputs, i, NULL) == 0);
 338
 339     if (i->client)
 340         pa_assert_se(pa_idxset_put(i->client->sink_inputs, i, NULL) >= 0);
 341
 342     pa_log_info("Created input %u \"%s\" on %s with sample spec %s and channel map %s",
 343                 i->index,
 344                 pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME)),
 345                 i->sink->name,
 346                 pa_sample_spec_snprint(st, sizeof(st), &i->sample_spec),
 347                 pa_channel_map_snprint(cm, sizeof(cm), &i->channel_map));
 348
 349     /* Don't forget to call pa_sink_input_put! */
 350
 351     *_i = i;
 352     return 0;
 353 }
 354
 355 /* Called from main context */
 356 static void update_n_corked(pa_sink_input *i, pa_sink_input_state_t state) {
 357     pa_assert(i);
 358
 359     if (!i->sink)
 360         return;
 361
 362     if (i->state == PA_SINK_INPUT_CORKED && state != PA_SINK_INPUT_CORKED)
 363         pa_assert_se(i->sink->n_corked -- >= 1);
 364     else if (i->state != PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_CORKED)
 365         i->sink->n_corked++;
 366 }
 367
 368 /* Called from main context */
 369 static void sink_input_set_state(pa_sink_input *i, pa_sink_input_state_t state) {
 370     pa_sink_input *ssync;
 371     pa_assert(i);
 372
 373     if (state == PA_SINK_INPUT_DRAINED)
 374         state = PA_SINK_INPUT_RUNNING;
 375
 376     if (i->state == state)
 377         return;
 378
 379     pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) == 0);
 380
 381     update_n_corked(i, state);
 382     i->state = state;
 383
 384     for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev) {
 385         update_n_corked(ssync, state);
 386         ssync->state = state;
 387     }
 388     for (ssync = i->sync_next; ssync; ssync = ssync->sync_next) {
 389         update_n_corked(ssync, state);
 390         ssync->state = state;
 391     }
 392
 393     if (state != PA_SINK_INPUT_UNLINKED) {
 394         pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], i);
 395
 396         for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev)
 397             pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], ssync);
 398
 399         for (ssync = i->sync_next; ssync; ssync = ssync->sync_next)
 400             pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], ssync);
 401     }
 402
 403     pa_sink_update_status(i->sink);
 404 }
 405
 406 /* Called from main context */
 407 void pa_sink_input_unlink(pa_sink_input *i) {
 408     pa_bool_t linked;
 409     pa_source_output *o, *p =  NULL;
 410     pa_assert(i);
 411
 412     /* See pa_sink_unlink() for a couple of comments how this function
 413      * works */
 414
 415     pa_sink_input_ref(i);
 416
 417     linked = PA_SINK_INPUT_IS_LINKED(i->state);
 418
 419     if (linked)
 420         pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK], i);
 421
 422     if (i->sync_prev)
 423         i->sync_prev->sync_next = i->sync_next;
 424     if (i->sync_next)
 425         i->sync_next->sync_prev = i->sync_prev;
 426
 427     i->sync_prev = i->sync_next = NULL;
 428
 429     pa_idxset_remove_by_data(i->core->sink_inputs, i, NULL);
 430
 431     if (i->sink)
 432         if (pa_idxset_remove_by_data(i->sink->inputs, i, NULL))
 433             pa_sink_input_unref(i);
 434
 435     if (i->client)
 436         pa_idxset_remove_by_data(i->client->sink_inputs, i, NULL);
 437
 438     while ((o = pa_idxset_first(i->direct_outputs, NULL))) {
 439         pa_assert(o != p);
 440         pa_source_output_kill(o);
 441         p = o;
 442     }
 443
 444     update_n_corked(i, PA_SINK_INPUT_UNLINKED);
 445     i->state = PA_SINK_INPUT_UNLINKED;
 446
 447     if (linked && i->sink) {
 448         /* We might need to update the sink's volume if we are in flat volume mode. */
 449         if (i->sink->flags & PA_SINK_FLAT_VOLUME) {
 450             pa_cvolume new_volume;
 451             pa_sink_update_flat_volume(i->sink, &new_volume);
 452             pa_sink_set_volume(i->sink, &new_volume, FALSE, FALSE);
 453         }
 454
 455         if (i->sink->asyncmsgq)
 456             pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_REMOVE_INPUT, i, 0, NULL) == 0);
 457     }
 458
 459     reset_callbacks(i);
 460
 461     if (linked) {
 462         pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_REMOVE, i->index);
 463         pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST], i);
 464     }
 465
 466     if (i->sink) {
 467         pa_sink_update_status(i->sink);
 468         i->sink = NULL;
 469     }
 470
 471     pa_core_maybe_vacuum(i->core);
 472
 473     pa_sink_input_unref(i);
 474 }
 475
 476 /* Called from main context */
 477 static void sink_input_free(pa_object *o) {
 478     pa_sink_input* i = PA_SINK_INPUT(o);
 479
 480     pa_assert(i);
 481     pa_assert(pa_sink_input_refcnt(i) == 0);
 482
 483     if (PA_SINK_INPUT_IS_LINKED(i->state))
 484         pa_sink_input_unlink(i);
 485
 486     pa_log_info("Freeing input %u \"%s\"", i->index, pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME)));
 487
 488     pa_assert(!i->thread_info.attached);
 489
 490     if (i->thread_info.render_memblockq)
 491         pa_memblockq_free(i->thread_info.render_memblockq);
 492
 493     if (i->thread_info.resampler)
 494         pa_resampler_free(i->thread_info.resampler);
 495
 496     if (i->proplist)
 497         pa_proplist_free(i->proplist);
 498
 499     if (i->direct_outputs)
 500         pa_idxset_free(i->direct_outputs, NULL, NULL);
 501
 502     if (i->thread_info.direct_outputs)
 503         pa_hashmap_free(i->thread_info.direct_outputs, NULL, NULL);
 504
 505     pa_xfree(i->driver);
 506     pa_xfree(i);
 507 }
 508
 509 /* Called from main context */
 510 void pa_sink_input_put(pa_sink_input *i) {
 511     pa_sink_input_state_t state;
 512     pa_sink_input_assert_ref(i);
 513
 514     pa_assert(i->state == PA_SINK_INPUT_INIT);
 515
 516     /* The following fields must be initialized properly */
 517     pa_assert(i->pop);
 518     pa_assert(i->process_rewind);
 519     pa_assert(i->kill);
 520
 521     state = i->flags & PA_SINK_INPUT_START_CORKED ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING;
 522
 523     update_n_corked(i, state);
 524     i->state = state;
 525
 526     /* We might need to update the sink's volume if we are in flat volume mode. */
 527     if (i->sink->flags & PA_SINK_FLAT_VOLUME) {
 528         pa_cvolume new_volume;
 529         pa_sink_update_flat_volume(i->sink, &new_volume);
 530         pa_sink_set_volume(i->sink, &new_volume, FALSE, FALSE);
 531     } else
 532         pa_sw_cvolume_multiply(&i->soft_volume, &i->virtual_volume, &i->volume_factor);
 533
 534     i->thread_info.soft_volume = i->soft_volume;
 535     i->thread_info.muted = i->muted;
 536
 537     pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_ADD_INPUT, i, 0, NULL) == 0);
 538
 539     pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, i->index);
 540     pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], i);
 541
 542     pa_sink_update_status(i->sink);
 543 }
 544
 545 /* Called from main context */
 546 void pa_sink_input_kill(pa_sink_input*i) {
 547     pa_sink_input_assert_ref(i);
 548     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 549
 550     i->kill(i);
 551 }
 552
 553 /* Called from main context */
 554 pa_usec_t pa_sink_input_get_latency(pa_sink_input *i, pa_usec_t *sink_latency) {
 555     pa_usec_t r[2] = { 0, 0 };
 556
 557     pa_sink_input_assert_ref(i);
 558     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 559
 560     pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
 561
 562     if (i->get_latency)
 563         r[0] += i->get_latency(i);
 564
 565     if (sink_latency)
 566         *sink_latency = r[1];
 567
 568     return r[0];
 569 }
 570
 571 /* Called from thread context */
 572 void pa_sink_input_peek(pa_sink_input *i, size_t slength /* in sink frames */, pa_memchunk *chunk, pa_cvolume *volume) {
 573     pa_bool_t do_volume_adj_here;
 574     pa_bool_t volume_is_norm;
 575     size_t block_size_max_sink, block_size_max_sink_input;
 576     size_t ilength;
 577
 578     pa_sink_input_assert_ref(i);
 579     pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
 580     pa_assert(pa_frame_aligned(slength, &i->sink->sample_spec));
 581     pa_assert(chunk);
 582     pa_assert(volume);
 583
 584 /*     pa_log_debug("peek"); */
 585
 586     pa_assert(i->thread_info.state == PA_SINK_INPUT_RUNNING ||
 587               i->thread_info.state == PA_SINK_INPUT_CORKED ||
 588               i->thread_info.state == PA_SINK_INPUT_DRAINED);
 589
 590     block_size_max_sink_input = i->thread_info.resampler ?
 591         pa_resampler_max_block_size(i->thread_info.resampler) :
 592         pa_frame_align(pa_mempool_block_size_max(i->core->mempool), &i->sample_spec);
 593
 594     block_size_max_sink = pa_frame_align(pa_mempool_block_size_max(i->core->mempool), &i->sink->sample_spec);
 595
 596     /* Default buffer size */
 597     if (slength <= 0)
 598         slength = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sink->sample_spec);
 599
 600     if (slength > block_size_max_sink)
 601         slength = block_size_max_sink;
 602
 603     if (i->thread_info.resampler) {
 604         ilength = pa_resampler_request(i->thread_info.resampler, slength);
 605
 606         if (ilength <= 0)
 607             ilength = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sample_spec);
 608     } else
 609         ilength = slength;
 610
 611     if (ilength > block_size_max_sink_input)
 612         ilength = block_size_max_sink_input;
 613
 614     /* If the channel maps of the sink and this stream differ, we need
 615      * to adjust the volume *before* we resample. Otherwise we can do
 616      * it after and leave it for the sink code */
 617
 618     do_volume_adj_here = !pa_channel_map_equal(&i->channel_map, &i->sink->channel_map);
 619     volume_is_norm = pa_cvolume_is_norm(&i->thread_info.soft_volume) && !i->thread_info.muted;
 620
 621     while (!pa_memblockq_is_readable(i->thread_info.render_memblockq)) {
 622         pa_memchunk tchunk;
 623
 624         /* There's nothing in our render queue. We need to fill it up
 625          * with data from the implementor. */
 626
 627         if (i->thread_info.state == PA_SINK_INPUT_CORKED ||
 628             i->pop(i, ilength, &tchunk) < 0) {
 629
 630             /* OK, we're corked or the implementor didn't give us any
 631              * data, so let's just hand out silence */
 632             pa_atomic_store(&i->thread_info.drained, 1);
 633
 634             pa_memblockq_seek(i->thread_info.render_memblockq, (int64_t) slength, PA_SEEK_RELATIVE);
 635             i->thread_info.playing_for = 0;
 636             if (i->thread_info.underrun_for != (uint64_t) -1)
 637                 i->thread_info.underrun_for += ilength;
 638             break;
 639         }
 640
 641         pa_atomic_store(&i->thread_info.drained, 0);
 642
 643         pa_assert(tchunk.length > 0);
 644         pa_assert(tchunk.memblock);
 645
 646         i->thread_info.underrun_for = 0;
 647         i->thread_info.playing_for += tchunk.length;
 648
 649         while (tchunk.length > 0) {
 650             pa_memchunk wchunk;
 651
 652             wchunk = tchunk;
 653             pa_memblock_ref(wchunk.memblock);
 654
 655             if (wchunk.length > block_size_max_sink_input)
 656                 wchunk.length = block_size_max_sink_input;
 657
 658             /* It might be necessary to adjust the volume here */
 659             if (do_volume_adj_here && !volume_is_norm) {
 660                 pa_memchunk_make_writable(&wchunk, 0);
 661
 662                 if (i->thread_info.muted)
 663                     pa_silence_memchunk(&wchunk, &i->thread_info.sample_spec);
 664                 else
 665                     pa_volume_memchunk(&wchunk, &i->thread_info.sample_spec, &i->thread_info.soft_volume);
 666             }
 667
 668             if (!i->thread_info.resampler)
 669                 pa_memblockq_push_align(i->thread_info.render_memblockq, &wchunk);
 670             else {
 671                 pa_memchunk rchunk;
 672                 pa_resampler_run(i->thread_info.resampler, &wchunk, &rchunk);
 673
 674 /*                 pa_log_debug("pushing %lu", (unsigned long) rchunk.length); */
 675
 676                 if (rchunk.memblock) {
 677                     pa_memblockq_push_align(i->thread_info.render_memblockq, &rchunk);
 678                     pa_memblock_unref(rchunk.memblock);
 679                 }
 680             }
 681
 682             pa_memblock_unref(wchunk.memblock);
 683
 684             tchunk.index += wchunk.length;
 685             tchunk.length -= wchunk.length;
 686         }
 687
 688         pa_memblock_unref(tchunk.memblock);
 689     }
 690
 691     pa_assert_se(pa_memblockq_peek(i->thread_info.render_memblockq, chunk) >= 0);
 692
 693     pa_assert(chunk->length > 0);
 694     pa_assert(chunk->memblock);
 695
 696 /*     pa_log_debug("peeking %lu", (unsigned long) chunk->length); */
 697
 698     if (chunk->length > block_size_max_sink)
 699         chunk->length = block_size_max_sink;
 700
 701     /* Let's see if we had to apply the volume adjustment ourselves,
 702      * or if this can be done by the sink for us */
 703
 704     if (do_volume_adj_here)
 705         /* We had different channel maps, so we already did the adjustment */
 706         pa_cvolume_reset(volume, i->sink->sample_spec.channels);
 707     else if (i->thread_info.muted)
 708         /* We've both the same channel map, so let's have the sink do the adjustment for us*/
 709         pa_cvolume_mute(volume, i->sink->sample_spec.channels);
 710     else
 711         *volume = i->thread_info.soft_volume;
 712 }
 713
 714 /* Called from thread context */
 715 void pa_sink_input_drop(pa_sink_input *i, size_t nbytes /* in sink sample spec */) {
 716     pa_sink_input_assert_ref(i);
 717
 718     pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
 719     pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
 720     pa_assert(nbytes > 0);
 721
 722 /*     pa_log_debug("dropping %lu", (unsigned long) nbytes); */
 723
 724     pa_memblockq_drop(i->thread_info.render_memblockq, nbytes);
 725 }
 726
 727 /* Called from thread context */
 728 void pa_sink_input_process_rewind(pa_sink_input *i, size_t nbytes /* in sink sample spec */) {
 729     size_t lbq;
 730     pa_bool_t called = FALSE;
 731     pa_sink_input_assert_ref(i);
 732
 733     pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
 734     pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
 735
 736 /*     pa_log_debug("rewind(%lu, %lu)", (unsigned long) nbytes, (unsigned long) i->thread_info.rewrite_nbytes); */
 737
 738     lbq = pa_memblockq_get_length(i->thread_info.render_memblockq);
 739
 740     if (nbytes > 0 && !i->thread_info.dont_rewind_render) {
 741         pa_log_debug("Have to rewind %lu bytes on render memblockq.", (unsigned long) nbytes);
 742         pa_memblockq_rewind(i->thread_info.render_memblockq, nbytes);
 743     }
 744
 745     if (i->thread_info.rewrite_nbytes == (size_t) -1) {
 746
 747         /* We were asked to drop all buffered data, and rerequest new
 748          * data from implementor the next time push() is called */
 749
 750         pa_memblockq_flush_write(i->thread_info.render_memblockq);
 751
 752     } else if (i->thread_info.rewrite_nbytes > 0) {
 753         size_t max_rewrite, amount;
 754
 755         /* Calculate how much make sense to rewrite at most */
 756         max_rewrite = nbytes + lbq;
 757
 758         /* Transform into local domain */
 759         if (i->thread_info.resampler)
 760             max_rewrite = pa_resampler_request(i->thread_info.resampler, max_rewrite);
 761
 762         /* Calculate how much of the rewinded data should actually be rewritten */
 763         amount = PA_MIN(i->thread_info.rewrite_nbytes, max_rewrite);
 764
 765         if (amount > 0) {
 766             pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) amount);
 767
 768             /* Tell the implementor */
 769             if (i->process_rewind)
 770                 i->process_rewind(i, amount);
 771             called = TRUE;
 772
 773             /* Convert back to to sink domain */
 774             if (i->thread_info.resampler)
 775                 amount = pa_resampler_result(i->thread_info.resampler, amount);
 776
 777             if (amount > 0)
 778                 /* Ok, now update the write pointer */
 779                 pa_memblockq_seek(i->thread_info.render_memblockq, - ((int64_t) amount), PA_SEEK_RELATIVE);
 780
 781             if (i->thread_info.rewrite_flush)
 782                 pa_memblockq_silence(i->thread_info.render_memblockq);
 783
 784             /* And reset the resampler */
 785             if (i->thread_info.resampler)
 786                 pa_resampler_reset(i->thread_info.resampler);
 787         }
 788     }
 789
 790     if (!called)
 791         if (i->process_rewind)
 792             i->process_rewind(i, 0);
 793
 794     i->thread_info.rewrite_nbytes = 0;
 795     i->thread_info.rewrite_flush = FALSE;
 796     i->thread_info.dont_rewind_render = FALSE;
 797 }
 798
 799 /* Called from thread context */
 800 void pa_sink_input_update_max_rewind(pa_sink_input *i, size_t nbytes  /* in the sink's sample spec */) {
 801     pa_sink_input_assert_ref(i);
 802     pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
 803     pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
 804
 805     pa_memblockq_set_maxrewind(i->thread_info.render_memblockq, nbytes);
 806
 807     if (i->update_max_rewind)
 808         i->update_max_rewind(i, i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, nbytes) : nbytes);
 809 }
 810
 811 /* Called from thread context */
 812 void pa_sink_input_update_max_request(pa_sink_input *i, size_t nbytes  /* in the sink's sample spec */) {
 813     pa_sink_input_assert_ref(i);
 814     pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
 815     pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
 816
 817     if (i->update_max_request)
 818         i->update_max_request(i, i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, nbytes) : nbytes);
 819 }
 820
 821 /* Called from thread context */
 822 static pa_usec_t fixup_latency(pa_sink *s, pa_usec_t usec) {
 823     pa_sink_assert_ref(s);
 824
 825     if (usec == (pa_usec_t) -1)
 826         return usec;
 827
 828     if (s->thread_info.max_latency > 0 && usec > s->thread_info.max_latency)
 829         usec = s->thread_info.max_latency;
 830
 831     if (s->thread_info.min_latency > 0 && usec < s->thread_info.min_latency)
 832         usec = s->thread_info.min_latency;
 833
 834     return usec;
 835 }
 836
 837 /* Called from thread context */
 838 pa_usec_t pa_sink_input_set_requested_latency_within_thread(pa_sink_input *i, pa_usec_t usec) {
 839     pa_sink_input_assert_ref(i);
 840
 841     usec = fixup_latency(i->sink, usec);
 842     i->thread_info.requested_sink_latency = usec;
 843     pa_sink_invalidate_requested_latency(i->sink);
 844
 845     return usec;
 846 }
 847
 848 /* Called from main context */
 849 pa_usec_t pa_sink_input_set_requested_latency(pa_sink_input *i, pa_usec_t usec) {
 850     pa_sink_input_assert_ref(i);
 851
 852     if (PA_SINK_INPUT_IS_LINKED(i->state))
 853         pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
 854     else
 855         /* If this sink input is not realized yet, we have to touch
 856          * the thread info data directly */
 857
 858         i->thread_info.requested_sink_latency = usec;
 859
 860     return usec;
 861 }
 862
 863 /* Called from main context */
 864 pa_usec_t pa_sink_input_get_requested_latency(pa_sink_input *i) {
 865     pa_usec_t usec = 0;
 866
 867     pa_sink_input_assert_ref(i);
 868
 869     if (PA_SINK_INPUT_IS_LINKED(i->state))
 870         pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
 871     else
 872         /* If this sink input is not realized yet, we have to touch
 873          * the thread info data directly */
 874         usec = i->thread_info.requested_sink_latency;
 875
 876     return usec;
 877 }
 878
 879 /* Called from main context */
 880 void pa_sink_input_set_volume(pa_sink_input *i, const pa_cvolume *volume, pa_bool_t save) {
 881     pa_sink_input_assert_ref(i);
 882     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 883     pa_assert(volume);
 884     pa_assert(pa_cvolume_valid(volume));
 885     pa_assert(pa_cvolume_compatible(volume, &i->sample_spec));
 886
 887     if (pa_cvolume_equal(volume, &i->virtual_volume))
 888         return;
 889
 890     i->virtual_volume = *volume;
 891     i->save_volume = save;
 892
 893     if (i->sink->flags & PA_SINK_FLAT_VOLUME) {
 894         pa_cvolume new_volume;
 895
 896         /* We are in flat volume mode, so let's update all sink input
 897          * volumes and update the flat volume of the sink */
 898
 899         pa_sink_update_flat_volume(i->sink, &new_volume);
 900         pa_sink_set_volume(i->sink, &new_volume, FALSE, TRUE);
 901
 902     } else {
 903
 904         /* OK, we are in normal volume mode. The volume only affects
 905          * ourselves */
 906         pa_sw_cvolume_multiply(&i->soft_volume, volume, &i->volume_factor);
 907
 908         /* Hooks have the ability to play games with i->soft_volume */
 909         pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_SET_VOLUME], i);
 910
 911         pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_SOFT_VOLUME, NULL, 0, NULL) == 0);
 912     }
 913
 914     /* The virtual volume changed, let's tell people so */
 915     pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 916 }
 917
 918 /* Called from main context */
 919 const pa_cvolume *pa_sink_input_get_volume(pa_sink_input *i) {
 920     pa_sink_input_assert_ref(i);
 921     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 922
 923     return &i->virtual_volume;
 924 }
 925
 926 /* Called from main context */
 927 void pa_sink_input_set_mute(pa_sink_input *i, pa_bool_t mute, pa_bool_t save) {
 928     pa_assert(i);
 929     pa_sink_input_assert_ref(i);
 930     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 931
 932     if (!i->muted == !mute)
 933         return;
 934
 935     i->muted = mute;
 936     i->save_muted = save;
 937
 938     pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_SOFT_MUTE, NULL, 0, NULL) == 0);
 939     pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 940 }
 941
 942 /* Called from main context */
 943 pa_bool_t pa_sink_input_get_mute(pa_sink_input *i) {
 944     pa_sink_input_assert_ref(i);
 945     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 946
 947     return i->muted;
 948 }
 949
 950 /* Called from main thread */
 951 void pa_sink_input_update_proplist(pa_sink_input *i, pa_update_mode_t mode, pa_proplist *p) {
 952     pa_sink_input_assert_ref(i);
 953
 954     if (p)
 955         pa_proplist_update(i->proplist, mode, p);
 956
 957     if (PA_SINK_IS_LINKED(i->state)) {
 958         pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED], i);
 959         pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 960     }
 961 }
 962
 963 /* Called from main context */
 964 void pa_sink_input_cork(pa_sink_input *i, pa_bool_t b) {
 965     pa_sink_input_assert_ref(i);
 966     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 967
 968     sink_input_set_state(i, b ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING);
 969 }
 970
 971 /* Called from main context */
 972 int pa_sink_input_set_rate(pa_sink_input *i, uint32_t rate) {
 973     pa_sink_input_assert_ref(i);
 974     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
 975     pa_return_val_if_fail(i->thread_info.resampler, -PA_ERR_BADSTATE);
 976
 977     if (i->sample_spec.rate == rate)
 978         return 0;
 979
 980     i->sample_spec.rate = rate;
 981
 982     pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
 983
 984     pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
 985     return 0;
 986 }
 987
 988 /* Called from main context */
 989 void pa_sink_input_set_name(pa_sink_input *i, const char *name) {
 990     const char *old;
 991     pa_sink_input_assert_ref(i);
 992
 993     if (!name && !pa_proplist_contains(i->proplist, PA_PROP_MEDIA_NAME))
 994         return;
 995
 996     old = pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME);
 997
 998     if (old && name && !strcmp(old, name))
 999         return;
1000
1001     if (name)
1002         pa_proplist_sets(i->proplist, PA_PROP_MEDIA_NAME, name);
1003     else
1004         pa_proplist_unset(i->proplist, PA_PROP_MEDIA_NAME);
1005
1006     if (PA_SINK_INPUT_IS_LINKED(i->state)) {
1007         pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED], i);
1008         pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
1009     }
1010 }
1011
1012 /* Called from main context */
1013 pa_resample_method_t pa_sink_input_get_resample_method(pa_sink_input *i) {
1014     pa_sink_input_assert_ref(i);
1015
1016     return i->actual_resample_method;
1017 }
1018
1019 /* Called from main context */
1020 pa_bool_t pa_sink_input_may_move(pa_sink_input *i) {
1021     pa_sink_input_assert_ref(i);
1022     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
1023
1024     if (i->flags & PA_SINK_INPUT_DONT_MOVE)
1025         return FALSE;
1026
1027     if (i->sync_next || i->sync_prev) {
1028         pa_log_warn("Moving synchronised streams not supported.");
1029         return FALSE;
1030     }
1031
1032     return TRUE;
1033 }
1034
1035 /* Called from main context */
1036 pa_bool_t pa_sink_input_may_move_to(pa_sink_input *i, pa_sink *dest) {
1037     pa_sink_input_assert_ref(i);
1038     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
1039     pa_sink_assert_ref(dest);
1040
1041     if (dest == i->sink)
1042         return TRUE;
1043
1044     if (!pa_sink_input_may_move(i))
1045         return FALSE;
1046
1047     if (pa_idxset_size(dest->inputs) >= PA_MAX_INPUTS_PER_SINK) {
1048         pa_log_warn("Failed to move sink input: too many inputs per sink.");
1049         return FALSE;
1050     }
1051
1052     if (i->may_move_to)
1053         if (!i->may_move_to(i, dest))
1054             return FALSE;
1055
1056     return TRUE;
1057 }
1058
1059 /* Called from main context */
1060 int pa_sink_input_start_move(pa_sink_input *i) {
1061     pa_source_output *o, *p = NULL;
1062     pa_sink *origin;
1063     int r;
1064
1065     pa_sink_input_assert_ref(i);
1066     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
1067     pa_assert(i->sink);
1068
1069     if (!pa_sink_input_may_move(i))
1070         return -PA_ERR_NOTSUPPORTED;
1071
1072     if ((r = pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_START], i)) < 0)
1073         return r;
1074
1075     origin = i->sink;
1076
1077     /* Kill directly connected outputs */
1078     while ((o = pa_idxset_first(i->direct_outputs, NULL))) {
1079         pa_assert(o != p);
1080         pa_source_output_kill(o);
1081         p = o;
1082     }
1083     pa_assert(pa_idxset_isempty(i->direct_outputs));
1084
1085     pa_idxset_remove_by_data(i->sink->inputs, i, NULL);
1086
1087     if (pa_sink_input_get_state(i) == PA_SINK_INPUT_CORKED)
1088         pa_assert_se(i->sink->n_corked-- >= 1);
1089
1090     if (i->sink->flags & PA_SINK_FLAT_VOLUME) {
1091         pa_cvolume new_volume;
1092
1093         /* Make the absolute volume relative */
1094         i->virtual_volume = i->soft_volume;
1095         i->soft_volume = i->volume_factor;
1096
1097         /* We might need to update the sink's volume if we are in flat
1098          * volume mode. */
1099         pa_sink_update_flat_volume(i->sink, &new_volume);
1100         pa_sink_set_volume(i->sink, &new_volume, FALSE, FALSE);
1101     }
1102
1103     pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_START_MOVE, i, 0, NULL) == 0);
1104
1105     pa_sink_update_status(i->sink);
1106     i->sink = NULL;
1107
1108     return 0;
1109 }
1110
1111 /* Called from main context */
1112 int pa_sink_input_finish_move(pa_sink_input *i, pa_sink *dest, pa_bool_t save) {
1113     pa_resampler *new_resampler;
1114
1115     pa_sink_input_assert_ref(i);
1116     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
1117     pa_assert(!i->sink);
1118     pa_sink_assert_ref(dest);
1119
1120     if (!pa_sink_input_may_move_to(i, dest))
1121         return -PA_ERR_NOTSUPPORTED;
1122
1123     if (i->thread_info.resampler &&
1124         pa_sample_spec_equal(pa_resampler_output_sample_spec(i->thread_info.resampler), &dest->sample_spec) &&
1125         pa_channel_map_equal(pa_resampler_output_channel_map(i->thread_info.resampler), &dest->channel_map))
1126
1127         /* Try to reuse the old resampler if possible */
1128         new_resampler = i->thread_info.resampler;
1129
1130     else if ((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ||
1131              !pa_sample_spec_equal(&i->sample_spec, &dest->sample_spec) ||
1132              !pa_channel_map_equal(&i->channel_map, &dest->channel_map)) {
1133
1134         /* Okey, we need a new resampler for the new sink */
1135
1136         if (!(new_resampler = pa_resampler_new(
1137                       i->core->mempool,
1138                       &i->sample_spec, &i->channel_map,
1139                       &dest->sample_spec, &dest->channel_map,
1140                       i->requested_resample_method,
1141                       ((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
1142                       ((i->flags & PA_SINK_INPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
1143                       (i->core->disable_remixing || (i->flags & PA_SINK_INPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0)))) {
1144             pa_log_warn("Unsupported resampling operation.");
1145             return -PA_ERR_NOTSUPPORTED;
1146         }
1147     } else
1148         new_resampler = NULL;
1149
1150     i->sink = dest;
1151     i->save_sink = save;
1152     pa_idxset_put(dest->inputs, i, NULL);
1153
1154     if (pa_sink_input_get_state(i) == PA_SINK_INPUT_CORKED)
1155         i->sink->n_corked++;
1156
1157     /* Replace resampler and render queue */
1158     if (new_resampler != i->thread_info.resampler) {
1159
1160         if (i->thread_info.resampler)
1161             pa_resampler_free(i->thread_info.resampler);
1162         i->thread_info.resampler = new_resampler;
1163
1164         pa_memblockq_free(i->thread_info.render_memblockq);
1165
1166         i->thread_info.render_memblockq = pa_memblockq_new(
1167                 0,
1168                 MEMBLOCKQ_MAXLENGTH,
1169                 0,
1170                 pa_frame_size(&i->sink->sample_spec),
1171                 0,
1172                 1,
1173                 0,
1174                 &i->sink->silence);
1175     }
1176
1177     pa_sink_update_status(dest);
1178
1179     if (i->sink->flags & PA_SINK_FLAT_VOLUME) {
1180         pa_cvolume new_volume;
1181
1182         /* Make relative volume absolute again */
1183         pa_cvolume t = dest->virtual_volume;
1184         pa_cvolume_remap(&t, &dest->channel_map, &i->channel_map);
1185         pa_sw_cvolume_multiply(&i->virtual_volume, &i->virtual_volume, &t);
1186
1187         /* We might need to update the sink's volume if we are in flat volume mode. */
1188         pa_sink_update_flat_volume(i->sink, &new_volume);
1189         pa_sink_set_volume(i->sink, &new_volume, FALSE, FALSE);
1190     }
1191
1192     pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_FINISH_MOVE, i, 0, NULL) == 0);
1193
1194     pa_log_debug("Successfully moved sink input %i to %s.", i->index, dest->name);
1195
1196     /* Notify everyone */
1197     if (i->moved)
1198         i->moved(i);
1199
1200     pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FINISH], i);
1201     pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
1202
1203     return 0;
1204 }
1205
1206 /* Called from main context */
1207 int pa_sink_input_move_to(pa_sink_input *i, pa_sink *dest, pa_bool_t save) {
1208     int r;
1209
1210     pa_sink_input_assert_ref(i);
1211     pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
1212     pa_assert(i->sink);
1213     pa_sink_assert_ref(dest);
1214
1215     if (dest == i->sink)
1216         return 0;
1217
1218     if (!pa_sink_input_may_move_to(i, dest))
1219         return -PA_ERR_NOTSUPPORTED;
1220
1221     if ((r = pa_sink_input_start_move(i)) < 0)
1222         return r;
1223
1224     if ((r = pa_sink_input_finish_move(i, dest, save)) < 0)
1225         return r;
1226
1227     return 0;
1228 }
1229
1230 /* Called from IO thread context */
1231 void pa_sink_input_set_state_within_thread(pa_sink_input *i, pa_sink_input_state_t state) {
1232     pa_bool_t corking, uncorking;
1233     pa_sink_input_assert_ref(i);
1234
1235     if (state == i->thread_info.state)
1236         return;
1237
1238     if ((state == PA_SINK_INPUT_DRAINED || state == PA_SINK_INPUT_RUNNING) &&
1239         !(i->thread_info.state == PA_SINK_INPUT_DRAINED || i->thread_info.state != PA_SINK_INPUT_RUNNING))
1240         pa_atomic_store(&i->thread_info.drained, 1);
1241
1242     corking = state == PA_SINK_INPUT_CORKED && i->thread_info.state == PA_SINK_INPUT_RUNNING;
1243     uncorking = i->thread_info.state == PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_RUNNING;
1244
1245     if (i->state_change)
1246         i->state_change(i, state);
1247
1248     i->thread_info.state = state;
1249
1250     if (corking) {
1251
1252         pa_log_debug("Requesting rewind due to corking");
1253
1254         /* This will tell the implementing sink input driver to rewind
1255          * so that the unplayed already mixed data is not lost */
1256         pa_sink_input_request_rewind(i, 0, TRUE, TRUE, FALSE);
1257
1258     } else if (uncorking) {
1259
1260         i->thread_info.underrun_for = (uint64_t) -1;
1261         i->thread_info.playing_for = 0;
1262
1263         pa_log_debug("Requesting rewind due to uncorking");
1264
1265         /* OK, we're being uncorked. Make sure we're not rewound when
1266          * the hw buffer is remixed and request a remix. */
1267         pa_sink_input_request_rewind(i, 0, FALSE, TRUE, TRUE);
1268     }
1269 }
1270
1271 /* Called from thread context, except when it is not. */
1272 int pa_sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
1273     pa_sink_input *i = PA_SINK_INPUT(o);
1274     pa_sink_input_assert_ref(i);
1275
1276     switch (code) {
1277
1278         case PA_SINK_INPUT_MESSAGE_SET_SOFT_VOLUME:
1279             if (!pa_cvolume_equal(&i->thread_info.soft_volume, &i->soft_volume)) {
1280                 i->thread_info.soft_volume = i->soft_volume;
1281                 pa_sink_input_request_rewind(i, 0, TRUE, FALSE, FALSE);
1282             }
1283             return 0;
1284
1285         case PA_SINK_INPUT_MESSAGE_SET_SOFT_MUTE:
1286             if (i->thread_info.muted != i->muted) {
1287                 i->thread_info.muted = i->muted;
1288                 pa_sink_input_request_rewind(i, 0, TRUE, FALSE, FALSE);
1289             }
1290             return 0;
1291
1292         case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
1293             pa_usec_t *r = userdata;
1294             pa_usec_t sink_usec = 0;
1295
1296             r[0] += pa_bytes_to_usec(pa_memblockq_get_length(i->thread_info.render_memblockq), &i->sink->sample_spec);
1297
1298             if (i->sink->parent.process_msg(PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_GET_LATENCY, &sink_usec, 0, NULL) >= 0)
1299                 r[1] += sink_usec;
1300
1301             return 0;
1302         }
1303
1304         case PA_SINK_INPUT_MESSAGE_SET_RATE:
1305
1306             i->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
1307             pa_resampler_set_input_rate(i->thread_info.resampler, PA_PTR_TO_UINT(userdata));
1308
1309             return 0;
1310
1311         case PA_SINK_INPUT_MESSAGE_SET_STATE: {
1312             pa_sink_input *ssync;
1313
1314             pa_sink_input_set_state_within_thread(i, PA_PTR_TO_UINT(userdata));
1315
1316             for (ssync = i->thread_info.sync_prev; ssync; ssync = ssync->thread_info.sync_prev)
1317                 pa_sink_input_set_state_within_thread(ssync, PA_PTR_TO_UINT(userdata));
1318
1319             for (ssync = i->thread_info.sync_next; ssync; ssync = ssync->thread_info.sync_next)
1320                 pa_sink_input_set_state_within_thread(ssync, PA_PTR_TO_UINT(userdata));
1321
1322             return 0;
1323         }
1324
1325         case PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY: {
1326             pa_usec_t *usec = userdata;
1327
1328             *usec = pa_sink_input_set_requested_latency_within_thread(i, *usec);
1329             return 0;
1330         }
1331
1332         case PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY: {
1333             pa_usec_t *r = userdata;
1334
1335             *r = i->thread_info.requested_sink_latency;
1336             return 0;
1337         }
1338     }
1339
1340     return -PA_ERR_NOTIMPLEMENTED;
1341 }
1342
1343 /* Called from main thread */
1344 pa_sink_input_state_t pa_sink_input_get_state(pa_sink_input *i) {
1345     pa_sink_input_assert_ref(i);
1346
1347     if (i->state == PA_SINK_INPUT_RUNNING || i->state == PA_SINK_INPUT_DRAINED)
1348         return pa_atomic_load(&i->thread_info.drained) ? PA_SINK_INPUT_DRAINED : PA_SINK_INPUT_RUNNING;
1349
1350     return i->state;
1351 }
1352
1353 /* Called from IO context */
1354 pa_bool_t pa_sink_input_safe_to_remove(pa_sink_input *i) {
1355     pa_sink_input_assert_ref(i);
1356
1357     if (PA_SINK_INPUT_IS_LINKED(i->thread_info.state))
1358         return pa_memblockq_is_empty(i->thread_info.render_memblockq);
1359
1360     return TRUE;
1361 }
1362
1363 /* Called from IO context */
1364 void pa_sink_input_request_rewind(pa_sink_input *i, size_t nbytes  /* in our sample spec */, pa_bool_t rewrite, pa_bool_t flush, pa_bool_t dont_rewind_render) {
1365     size_t lbq;
1366
1367     /* If 'rewrite' is TRUE the sink is rewound as far as requested
1368      * and possible and the exact value of this is passed back the
1369      * implementor via process_rewind(). If 'flush' is also TRUE all
1370      * already rendered data is also dropped.
1371      *
1372      * If 'rewrite' is FALSE the sink is rewound as far as requested
1373      * and possible and the already rendered data is dropped so that
1374      * in the next iteration we read new data from the
1375      * implementor. This implies 'flush' is TRUE.  If
1376      * dont_rewind_render is TRUE then the render memblockq is not
1377      * rewound. */
1378
1379     pa_sink_input_assert_ref(i);
1380
1381     nbytes = PA_MAX(i->thread_info.rewrite_nbytes, nbytes);
1382
1383 /*     pa_log_debug("request rewrite %lu", (unsigned long) nbytes); */
1384
1385     /* We don't take rewind requests while we are corked */
1386     if (i->thread_info.state == PA_SINK_INPUT_CORKED)
1387         return;
1388
1389     pa_assert(rewrite || flush);
1390     pa_assert(!dont_rewind_render || !rewrite);
1391
1392     /* Calculate how much we can rewind locally without having to
1393      * touch the sink */
1394     if (rewrite)
1395         lbq = pa_memblockq_get_length(i->thread_info.render_memblockq);
1396     else
1397         lbq = 0;
1398
1399     /* Check if rewinding for the maximum is requested, and if so, fix up */
1400     if (nbytes <= 0) {
1401
1402         /* Calculate maximum number of bytes that could be rewound in theory */
1403         nbytes = i->sink->thread_info.max_rewind + lbq;
1404
1405         /* Transform from sink domain */
1406         if (i->thread_info.resampler)
1407             nbytes = pa_resampler_request(i->thread_info.resampler, nbytes);
1408     }
1409
1410     if (i->thread_info.rewrite_nbytes != (size_t) -1) {
1411         if (rewrite) {
1412             /* Make sure to not overwrite over underruns */
1413             if (nbytes > i->thread_info.playing_for)
1414                 nbytes = (size_t) i->thread_info.playing_for;
1415
1416             i->thread_info.rewrite_nbytes = nbytes;
1417         } else
1418             i->thread_info.rewrite_nbytes = (size_t) -1;
1419     }
1420
1421     i->thread_info.rewrite_flush =
1422         i->thread_info.rewrite_flush ||
1423         (flush && i->thread_info.rewrite_nbytes != 0);
1424
1425     i->thread_info.dont_rewind_render =
1426         i->thread_info.dont_rewind_render ||
1427         dont_rewind_render;
1428
1429     if (nbytes != (size_t) -1) {
1430
1431         /* Transform to sink domain */
1432         if (i->thread_info.resampler)
1433             nbytes = pa_resampler_result(i->thread_info.resampler, nbytes);
1434
1435         if (nbytes > lbq)
1436             pa_sink_request_rewind(i->sink, nbytes - lbq);
1437         else
1438             /* This call will make sure process_rewind() is called later */
1439             pa_sink_request_rewind(i->sink, 0);
1440     }
1441 }
1442
1443 /* Called from main context */
1444 pa_memchunk* pa_sink_input_get_silence(pa_sink_input *i, pa_memchunk *ret) {
1445     pa_sink_input_assert_ref(i);
1446     pa_assert(ret);
1447
1448     pa_silence_memchunk_get(
1449                 &i->core->silence_cache,
1450                 i->core->mempool,
1451                 ret,
1452                 &i->sample_spec,
1453                 i->thread_info.resampler ? pa_resampler_max_block_size(i->thread_info.resampler) : 0);
1454
1455     return ret;
1456 }
1457
1458 /* Called from main context */
1459 void pa_sink_input_send_event(pa_sink_input *i, const char *event, pa_proplist *data) {
1460     pa_proplist *pl = NULL;
1461     pa_sink_input_send_event_hook_data hook_data;
1462
1463     pa_sink_input_assert_ref(i);
1464     pa_assert(event);
1465
1466     if (!i->send_event)
1467         return;
1468
1469     if (!data)
1470         data = pl = pa_proplist_new();
1471
1472     hook_data.sink_input = i;
1473     hook_data.data = data;
1474     hook_data.event = event;
1475
1476     if (pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_SEND_EVENT], &hook_data) < 0)
1477         goto finish;
1478
1479     i->send_event(i, event, data);
1480
1481 finish:
1482     if (pl)
1483         pa_proplist_free(pl);
1484 }