git.sesse.net Git - vlc/blob - src/video_output/video_output.c

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  *
   4  * This module describes the programming interface for video output threads.
   5  * It includes functions allowing to open a new thread, send pictures to a
   6  * thread, and destroy a previously oppened video output thread.
   7  *****************************************************************************
   8  * Copyright (C) 2000-2007 the VideoLAN team
   9  * $Id$
  10  *
  11  * Authors: Vincent Seguin <seguin@via.ecp.fr>
  12  *          Gildas Bazin <gbazin@videolan.org>
  13  *          Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  28  *****************************************************************************/
  29
  30 /*****************************************************************************
  31  * Preamble
  32  *****************************************************************************/
  33 #ifdef HAVE_CONFIG_H
  34 # include "config.h"
  35 #endif
  36
  37 #include <vlc_common.h>
  38
  39 #include <stdlib.h>                                                /* free() */
  40 #include <string.h>
  41 #include <assert.h>
  42
  43 #include <vlc_vout.h>
  44
  45 #include <vlc_filter.h>
  46 #include <vlc_vout_osd.h>
  47
  48 #include <libvlc.h>
  49 #include "vout_internal.h"
  50 #include "interlacing.h"
  51 #include "postprocessing.h"
  52 #include "display.h"
  53
  54 /*****************************************************************************
  55  * Local prototypes
  56  *****************************************************************************/
  57 static void *Thread(void *);
  58 static void VoutDestructor(vlc_object_t *);
  59
  60 /* Maximum delay between 2 displayed pictures.
  61  * XXX it is needed for now but should be removed in the long term.
  62  */
  63 #define VOUT_REDISPLAY_DELAY (INT64_C(80000))
  64
  65 /**
  66  * Late pictures having a delay higher than this value are thrashed.
  67  */
  68 #define VOUT_DISPLAY_LATE_THRESHOLD (INT64_C(20000))
  69
  70 /* Better be in advance when awakening than late... */
  71 #define VOUT_MWAIT_TOLERANCE (INT64_C(4000))
  72
  73 /* */
  74 static int VoutValidateFormat(video_format_t *dst,
  75                               const video_format_t *src)
  76 {
  77     if (src->i_width <= 0 || src->i_height <= 0)
  78         return VLC_EGENERIC;
  79     if (src->i_sar_num <= 0 || src->i_sar_den <= 0)
  80         return VLC_EGENERIC;
  81
  82     /* */
  83     video_format_Copy(dst, src);
  84     dst->i_chroma = vlc_fourcc_GetCodec(VIDEO_ES, src->i_chroma);
  85     vlc_ureduce( &dst->i_sar_num, &dst->i_sar_den,
  86                  src->i_sar_num,  src->i_sar_den, 50000 );
  87     if (dst->i_sar_num <= 0 || dst->i_sar_den <= 0) {
  88         dst->i_sar_num = 1;
  89         dst->i_sar_den = 1;
  90     }
  91     video_format_FixRgb(dst);
  92     return VLC_SUCCESS;
  93 }
  94
  95 static vout_thread_t *VoutCreate(vlc_object_t *object,
  96                                  const vout_configuration_t *cfg)
  97 {
  98     video_format_t original;
  99     if (VoutValidateFormat(&original, cfg->fmt))
 100         return NULL;
 101
 102     /* Allocate descriptor */
 103     vout_thread_t *vout = vlc_custom_create(object,
 104                                             sizeof(*vout) + sizeof(*vout->p),
 105                                             VLC_OBJECT_VOUT, "video output");
 106     if (!vout) {
 107         video_format_Clean(&original);
 108         return NULL;
 109     }
 110
 111     /* */
 112     vout->p = (vout_thread_sys_t*)&vout[1];
 113
 114     vout->p->original = original;
 115     vout->p->dpb_size = cfg->dpb_size;
 116
 117     vout_control_Init(&vout->p->control);
 118     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_INIT);
 119
 120     vout_statistic_Init(&vout->p->statistic);
 121
 122     vout_snapshot_Init(&vout->p->snapshot);
 123
 124     /* Initialize locks */
 125     vlc_mutex_init(&vout->p->picture_lock);
 126     vlc_mutex_init(&vout->p->filter.lock);
 127     vlc_mutex_init(&vout->p->spu_lock);
 128
 129     /* Attach the new object now so we can use var inheritance below */
 130     vlc_object_attach(vout, object);
 131
 132     /* Initialize subpicture unit */
 133     vout->p->p_spu = spu_Create(vout);
 134
 135     /* Take care of some "interface/control" related initialisations */
 136     vout_IntfInit(vout);
 137
 138     vout->p->title.show     = var_GetBool(vout, "video-title-show");
 139     vout->p->title.timeout  = var_GetInteger(vout, "video-title-timeout");
 140     vout->p->title.position = var_GetInteger(vout, "video-title-position");
 141
 142     /* Get splitter name if present */
 143     char *splitter_name = var_GetNonEmptyString(vout, "vout-filter");
 144     if (splitter_name) {
 145         if (asprintf(&vout->p->splitter_name, "%s,none", splitter_name) < 0)
 146             vout->p->splitter_name = NULL;
 147         free(splitter_name);
 148     } else {
 149         vout->p->splitter_name = NULL;
 150     }
 151
 152     /* */
 153     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 154
 155     /* */
 156     vlc_object_set_destructor(vout, VoutDestructor);
 157
 158     /* */
 159     if (vlc_clone(&vout->p->thread, Thread, vout,
 160                   VLC_THREAD_PRIORITY_OUTPUT)) {
 161         spu_Destroy(vout->p->p_spu);
 162         vlc_object_release(vout);
 163         return NULL;
 164     }
 165
 166     vout_control_WaitEmpty(&vout->p->control);
 167
 168     if (vout->p->dead) {
 169         msg_Err(vout, "video output creation failed");
 170         vout_CloseAndRelease(vout);
 171         return NULL;
 172     }
 173
 174     vout->p->input = cfg->input;
 175     if (vout->p->input)
 176         spu_Attach(vout->p->p_spu, vout->p->input, true);
 177
 178     return vout;
 179 }
 180
 181 vout_thread_t *(vout_Request)(vlc_object_t *object,
 182                               const vout_configuration_t *cfg)
 183 {
 184     vout_thread_t *vout = cfg->vout;
 185     if (cfg->change_fmt && !cfg->fmt) {
 186         if (vout)
 187             vout_CloseAndRelease(vout);
 188         return NULL;
 189     }
 190
 191     /* If a vout is provided, try reusing it */
 192     if (vout) {
 193         if (vout->p->input != cfg->input) {
 194             if (vout->p->input)
 195                 spu_Attach(vout->p->p_spu, vout->p->input, false);
 196             vout->p->input = cfg->input;
 197             if (vout->p->input)
 198                 spu_Attach(vout->p->p_spu, vout->p->input, true);
 199         }
 200
 201         if (cfg->change_fmt) {
 202             vout_control_cmd_t cmd;
 203             vout_control_cmd_Init(&cmd, VOUT_CONTROL_REINIT);
 204             cmd.u.cfg = cfg;
 205
 206             vout_control_Push(&vout->p->control, &cmd);
 207             vout_control_WaitEmpty(&vout->p->control);
 208         }
 209
 210         if (!vout->p->dead) {
 211             msg_Dbg(object, "reusing provided vout");
 212             return vout;
 213         }
 214         vout_CloseAndRelease(vout);
 215
 216         msg_Warn(object, "cannot reuse provided vout");
 217     }
 218     return VoutCreate(object, cfg);
 219 }
 220
 221 void vout_Close(vout_thread_t *vout)
 222 {
 223     assert(vout);
 224
 225     if (vout->p->input)
 226         spu_Attach(vout->p->p_spu, vout->p->input, false);
 227
 228     vout_snapshot_End(&vout->p->snapshot);
 229
 230     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 231     vlc_join(vout->p->thread, NULL);
 232
 233     vlc_mutex_lock(&vout->p->spu_lock);
 234     spu_Destroy(vout->p->p_spu);
 235     vout->p->p_spu = NULL;
 236     vlc_mutex_unlock(&vout->p->spu_lock);
 237 }
 238
 239 /* */
 240 static void VoutDestructor(vlc_object_t *object)
 241 {
 242     vout_thread_t *vout = (vout_thread_t *)object;
 243
 244     /* Make sure the vout was stopped first */
 245     //assert(!vout->p_module);
 246
 247     free(vout->p->splitter_name);
 248
 249     /* Destroy the locks */
 250     vlc_mutex_destroy(&vout->p->spu_lock);
 251     vlc_mutex_destroy(&vout->p->picture_lock);
 252     vlc_mutex_destroy(&vout->p->filter.lock);
 253     vout_control_Clean(&vout->p->control);
 254
 255     /* */
 256     vout_statistic_Clean(&vout->p->statistic);
 257
 258     /* */
 259     vout_snapshot_Clean(&vout->p->snapshot);
 260
 261     video_format_Clean(&vout->p->original);
 262 }
 263
 264 /* */
 265 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 266 {
 267     vout_control_cmd_t cmd;
 268     vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
 269     cmd.u.pause.is_on = is_paused;
 270     cmd.u.pause.date  = date;
 271     vout_control_Push(&vout->p->control, &cmd);
 272
 273     vout_control_WaitEmpty(&vout->p->control);
 274 }
 275
 276 void vout_GetResetStatistic(vout_thread_t *vout, int *displayed, int *lost)
 277 {
 278     vout_statistic_GetReset( &vout->p->statistic, displayed, lost );
 279 }
 280
 281 void vout_Flush(vout_thread_t *vout, mtime_t date)
 282 {
 283     vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
 284     vout_control_WaitEmpty(&vout->p->control);
 285 }
 286
 287 void vout_Reset(vout_thread_t *vout)
 288 {
 289     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
 290     vout_control_WaitEmpty(&vout->p->control);
 291 }
 292
 293 bool vout_IsEmpty(vout_thread_t *vout)
 294 {
 295     vlc_mutex_lock(&vout->p->picture_lock);
 296
 297     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 298     if (picture)
 299         picture_Release(picture);
 300
 301     vlc_mutex_unlock(&vout->p->picture_lock);
 302
 303     return !picture;
 304 }
 305
 306 void vout_FixLeaks( vout_thread_t *vout )
 307 {
 308     vlc_mutex_lock(&vout->p->picture_lock);
 309
 310     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 311     if (!picture) {
 312         picture = picture_pool_Get(vout->p->decoder_pool);
 313     }
 314
 315     if (picture) {
 316         picture_Release(picture);
 317         /* Not all pictures has been displayed yet or some are
 318          * free */
 319         vlc_mutex_unlock(&vout->p->picture_lock);
 320         return;
 321     }
 322
 323     /* There is no reason that no pictures are available, force one
 324      * from the pool, becarefull with it though */
 325     msg_Err(vout, "pictures leaked, trying to workaround");
 326
 327     /* */
 328     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 329
 330     vlc_mutex_unlock(&vout->p->picture_lock);
 331 }
 332 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 333 {
 334     vout_control_cmd_t cmd;
 335     vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
 336     cmd.u.time_ptr = duration;
 337
 338     vout_control_Push(&vout->p->control, &cmd);
 339     vout_control_WaitEmpty(&vout->p->control);
 340 }
 341
 342 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
 343 {
 344     assert(title);
 345     vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
 346 }
 347
 348 void vout_PutSubpicture( vout_thread_t *vout, subpicture_t *subpic )
 349 {
 350     vout_control_cmd_t cmd;
 351     vout_control_cmd_Init(&cmd, VOUT_CONTROL_SUBPICTURE);
 352     cmd.u.subpicture = subpic;
 353
 354     vout_control_Push(&vout->p->control, &cmd);
 355 }
 356 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 357 {
 358     int channel = SPU_DEFAULT_CHANNEL;
 359
 360     vlc_mutex_lock(&vout->p->spu_lock);
 361     if (vout->p->p_spu)
 362         channel = spu_RegisterChannel(vout->p->p_spu);
 363     vlc_mutex_unlock(&vout->p->spu_lock);
 364
 365     return channel;
 366 }
 367 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 368 {
 369     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 370                              channel);
 371 }
 372
 373 /**
 374  * It retreives a picture from the vout or NULL if no pictures are
 375  * available yet.
 376  *
 377  * You MUST call vout_PutPicture or vout_ReleasePicture on it.
 378  *
 379  * You may use vout_HoldPicture(paired with vout_ReleasePicture) to keep a
 380  * read-only reference.
 381  */
 382 picture_t *vout_GetPicture(vout_thread_t *vout)
 383 {
 384     /* Get lock */
 385     vlc_mutex_lock(&vout->p->picture_lock);
 386     picture_t *picture = picture_pool_Get(vout->p->decoder_pool);
 387     if (picture) {
 388         picture_Reset(picture);
 389         picture->p_next = NULL;
 390     }
 391     vlc_mutex_unlock(&vout->p->picture_lock);
 392
 393     return picture;
 394 }
 395
 396 /**
 397  * It gives to the vout a picture to be displayed.
 398  *
 399  * The given picture MUST comes from vout_GetPicture.
 400  *
 401  * Becareful, after vout_PutPicture is called, picture_t::p_next cannot be
 402  * read/used.
 403  */
 404 void vout_PutPicture(vout_thread_t *vout, picture_t *picture)
 405 {
 406     vlc_mutex_lock(&vout->p->picture_lock);
 407
 408     picture->p_next = NULL;
 409     picture_fifo_Push(vout->p->decoder_fifo, picture);
 410
 411     vlc_mutex_unlock(&vout->p->picture_lock);
 412
 413     vout_control_Wake(&vout->p->control);
 414 }
 415
 416 /**
 417  * It releases a picture retreived by vout_GetPicture.
 418  */
 419 void vout_ReleasePicture(vout_thread_t *vout, picture_t *picture)
 420 {
 421     vlc_mutex_lock(&vout->p->picture_lock);
 422
 423     picture_Release(picture);
 424
 425     vlc_mutex_unlock(&vout->p->picture_lock);
 426
 427     vout_control_Wake(&vout->p->control);
 428 }
 429
 430 /**
 431  * It increment the reference counter of a picture retreived by
 432  * vout_GetPicture.
 433  */
 434 void vout_HoldPicture(vout_thread_t *vout, picture_t *picture)
 435 {
 436     vlc_mutex_lock(&vout->p->picture_lock);
 437
 438     picture_Hold(picture);
 439
 440     vlc_mutex_unlock(&vout->p->picture_lock);
 441 }
 442
 443 /* vout_Control* are usable by anyone at anytime */
 444 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 445 {
 446     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 447                           fullscreen);
 448 }
 449 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 450 {
 451     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 452                           is_on_top);
 453 }
 454 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 455 {
 456     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 457                           is_filled);
 458 }
 459 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 460 {
 461     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 462                           num, den);
 463 }
 464 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 465                                          unsigned num, unsigned den)
 466 {
 467     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 468                           num, den);
 469 }
 470 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 471                                  unsigned num, unsigned den)
 472 {
 473     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 474                           num, den);
 475 }
 476 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 477                                   int x, int y, int width, int height)
 478 {
 479     vout_control_cmd_t cmd;
 480     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 481     cmd.u.window.x      = x;
 482     cmd.u.window.y      = y;
 483     cmd.u.window.width  = width;
 484     cmd.u.window.height = height;
 485
 486     vout_control_Push(&vout->p->control, &cmd);
 487 }
 488 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 489                                   int left, int top, int right, int bottom)
 490 {
 491     vout_control_cmd_t cmd;
 492     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 493     cmd.u.border.left   = left;
 494     cmd.u.border.top    = top;
 495     cmd.u.border.right  = right;
 496     cmd.u.border.bottom = bottom;
 497
 498     vout_control_Push(&vout->p->control, &cmd);
 499 }
 500 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 501 {
 502     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 503                             filters);
 504 }
 505 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 506 {
 507     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 508                             filters);
 509 }
 510 void vout_ControlChangeSubMargin(vout_thread_t *vout, int margin)
 511 {
 512     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_MARGIN,
 513                              margin);
 514 }
 515
 516 /* */
 517 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 518 {
 519     /* Load configuration */
 520     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 521     cfg->display.title = title;
 522     const int display_width = var_CreateGetInteger(vout, "width");
 523     const int display_height = var_CreateGetInteger(vout, "height");
 524     cfg->display.width   = display_width > 0  ? display_width  : 0;
 525     cfg->display.height  = display_height > 0 ? display_height : 0;
 526     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 527     unsigned msar_num, msar_den;
 528     if (var_InheritURational(vout, &msar_num, &msar_den, "monitor-par") ||
 529         msar_num <= 0 || msar_den <= 0) {
 530         msar_num = 1;
 531         msar_den = 1;
 532     }
 533     cfg->display.sar.num = msar_num;
 534     cfg->display.sar.den = msar_den;
 535     unsigned zoom_den = 1000;
 536     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 537     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 538     cfg->zoom.num = zoom_num;
 539     cfg->zoom.den = zoom_den;
 540     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 541     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 542     const int align_mask = var_CreateGetInteger(vout, "align");
 543     if (align_mask & 0x1)
 544         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 545     else if (align_mask & 0x2)
 546         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 547     if (align_mask & 0x4)
 548         cfg->align.vertical = VOUT_DISPLAY_ALIGN_TOP;
 549     else if (align_mask & 0x8)
 550         cfg->align.vertical = VOUT_DISPLAY_ALIGN_BOTTOM;
 551 }
 552
 553 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 554                                       const vout_window_cfg_t *cfg)
 555 {
 556     VLC_UNUSED(vd);
 557     vout_window_cfg_t cfg_override = *cfg;
 558
 559     if (!var_InheritBool( vout, "embedded-video"))
 560         cfg_override.is_standalone = true;
 561
 562     if (vout->p->window.is_unused && vout->p->window.object) {
 563         assert(!vout->p->splitter_name);
 564         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 565             cfg_override.type           == vout->p->window.cfg.type) {
 566             /* Reuse the stored window */
 567             msg_Dbg(vout, "Reusing previous vout window");
 568             vout_window_t *window = vout->p->window.object;
 569             if (cfg_override.width  != vout->p->window.cfg.width ||
 570                 cfg_override.height != vout->p->window.cfg.height)
 571                 vout_window_SetSize(window,
 572                                     cfg_override.width, cfg_override.height);
 573             vout->p->window.is_unused = false;
 574             vout->p->window.cfg       = cfg_override;
 575             return window;
 576         }
 577
 578         vout_window_Delete(vout->p->window.object);
 579         vout->p->window.is_unused = true;
 580         vout->p->window.object    = NULL;
 581     }
 582
 583     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), "$window",
 584                                             &cfg_override);
 585     if (!window)
 586         return NULL;
 587     if (!vout->p->splitter_name) {
 588         vout->p->window.is_unused = false;
 589         vout->p->window.cfg       = cfg_override;
 590         vout->p->window.object    = window;
 591     }
 592     return window;
 593 }
 594
 595 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 596                               vout_window_t *window)
 597 {
 598     VLC_UNUSED(vd);
 599     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 600         vout->p->window.is_unused = true;
 601     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 602         vout_window_Delete(vout->p->window.object);
 603         vout->p->window.is_unused = true;
 604         vout->p->window.object    = NULL;
 605     } else if (window) {
 606         vout_window_Delete(window);
 607     }
 608 }
 609
 610 /* */
 611
 612 static picture_t *VoutVideoFilterInteractiveNewPicture(filter_t *filter)
 613 {
 614     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 615
 616     return picture_pool_Get(vout->p->private_pool);
 617 }
 618 static picture_t *VoutVideoFilterStaticNewPicture(filter_t *filter)
 619 {
 620     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 621
 622     vlc_assert_locked(&vout->p->filter.lock);
 623     if (filter_chain_GetLength(vout->p->filter.chain_interactive) == 0)
 624         return VoutVideoFilterInteractiveNewPicture(filter);
 625     return picture_NewFromFormat(&filter->fmt_out.video);
 626 }
 627 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 628 {
 629     VLC_UNUSED(filter);
 630     picture_Release(picture);
 631 }
 632 static int VoutVideoFilterStaticAllocationSetup(filter_t *filter, void *data)
 633 {
 634     filter->pf_video_buffer_new = VoutVideoFilterStaticNewPicture;
 635     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 636     filter->p_owner             = data; /* vout */
 637     return VLC_SUCCESS;
 638 }
 639 static int VoutVideoFilterInteractiveAllocationSetup(filter_t *filter, void *data)
 640 {
 641     filter->pf_video_buffer_new = VoutVideoFilterInteractiveNewPicture;
 642     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 643     filter->p_owner             = data; /* vout */
 644     return VLC_SUCCESS;
 645 }
 646
 647 /* */
 648 static int ThreadDisplayPreparePicture(vout_thread_t *vout, bool reuse, bool is_late_dropped)
 649 {
 650     int lost_count = 0;
 651
 652     vlc_mutex_lock(&vout->p->filter.lock);
 653
 654     picture_t *picture = filter_chain_VideoFilter(vout->p->filter.chain_static, NULL);
 655     assert(!reuse || !picture);
 656
 657     while (!picture) {
 658         picture_t *decoded;
 659         if (reuse && vout->p->displayed.decoded) {
 660             decoded = picture_Hold(vout->p->displayed.decoded);
 661         } else {
 662             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 663             if (is_late_dropped && decoded && !decoded->b_force) {
 664                 const mtime_t predicted = mdate() + 0; /* TODO improve */
 665                 const mtime_t late = predicted - decoded->date;
 666                 if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 667                     msg_Warn(vout, "picture is too late to be displayed (missing %d ms)", (int)(late/1000));
 668                     picture_Release(decoded);
 669                     lost_count++;
 670                     continue;
 671                 } else if (late > 0) {
 672                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 673                 }
 674             }
 675         }
 676         if (!decoded)
 677             break;
 678         reuse = false;
 679
 680         if (vout->p->displayed.decoded)
 681             picture_Release(vout->p->displayed.decoded);
 682
 683         vout->p->displayed.decoded       = picture_Hold(decoded);
 684         vout->p->displayed.timestamp     = decoded->date;
 685         vout->p->displayed.is_interlaced = !decoded->b_progressive;
 686         vout->p->displayed.qtype         = decoded->i_qtype;
 687
 688         picture = filter_chain_VideoFilter(vout->p->filter.chain_static, decoded);
 689     }
 690
 691     vlc_mutex_unlock(&vout->p->filter.lock);
 692
 693     vout_statistic_Update(&vout->p->statistic, 0, lost_count);
 694     if (!picture)
 695         return VLC_EGENERIC;
 696
 697     assert(!vout->p->displayed.next);
 698     if (!vout->p->displayed.current)
 699         vout->p->displayed.current = picture;
 700     else
 701         vout->p->displayed.next    = picture;
 702     return VLC_SUCCESS;
 703 }
 704
 705 static int ThreadDisplayRenderPicture(vout_thread_t *vout, bool is_forced)
 706 {
 707     vout_display_t *vd = vout->p->display.vd;
 708
 709     picture_t *torender = picture_Hold(vout->p->displayed.current);
 710
 711     vout_chrono_Start(&vout->p->render);
 712
 713     vlc_mutex_lock(&vout->p->filter.lock);
 714     picture_t *filtered = filter_chain_VideoFilter(vout->p->filter.chain_interactive, torender);
 715     vlc_mutex_unlock(&vout->p->filter.lock);
 716
 717     if (!filtered)
 718         return VLC_EGENERIC;
 719
 720     if (filtered->date != vout->p->displayed.current->date)
 721         msg_Warn(vout, "Unsupported timestamp modifications done by chain_interactive");
 722
 723     /*
 724      * Check for subpictures to display
 725      */
 726     const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 727     mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 728     if (vout->p->pause.is_on)
 729         spu_render_time = vout->p->pause.date;
 730     else
 731         spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 732
 733     subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 734                                                spu_render_time,
 735                                                do_snapshot);
 736     /*
 737      * Perform rendering
 738      *
 739      * We have to:
 740      * - be sure to end up with a direct buffer.
 741      * - blend subtitles, and in a fast access buffer
 742      */
 743     picture_t *direct = NULL;
 744     if (filtered &&
 745         (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 746         picture_t *render;
 747         if (vout->p->is_decoder_pool_slow)
 748             render = picture_NewFromFormat(&vd->source);
 749         else if (vout->p->decoder_pool != vout->p->display_pool)
 750             render = picture_pool_Get(vout->p->display_pool);
 751         else
 752             render = picture_pool_Get(vout->p->private_pool);
 753
 754         if (render) {
 755             picture_Copy(render, filtered);
 756
 757             spu_RenderSubpictures(vout->p->p_spu,
 758                                   render, &vd->source,
 759                                   subpic, &vd->source, spu_render_time);
 760         }
 761         if (vout->p->is_decoder_pool_slow) {
 762             direct = picture_pool_Get(vout->p->display_pool);
 763             if (direct)
 764                 picture_Copy(direct, render);
 765             picture_Release(render);
 766
 767         } else {
 768             direct = render;
 769         }
 770         picture_Release(filtered);
 771         filtered = NULL;
 772     } else {
 773         direct = filtered;
 774     }
 775
 776     if (!direct)
 777         return VLC_EGENERIC;
 778
 779     /*
 780      * Take a snapshot if requested
 781      */
 782     if (do_snapshot)
 783         vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
 784
 785     /* Render the direct buffer returned by vout_RenderPicture */
 786     vout_RenderWrapper(vout, direct);
 787
 788     vout_chrono_Stop(&vout->p->render);
 789 #if 0
 790         {
 791         static int i = 0;
 792         if (((i++)%10) == 0)
 793             msg_Info(vout, "render: avg %d ms var %d ms",
 794                      (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 795         }
 796 #endif
 797
 798     /* Wait the real date (for rendering jitter) */
 799 #if 0
 800     mtime_t delay = direct->date - mdate();
 801     if (delay < 1000)
 802         msg_Warn(vout, "picture is late (%lld ms)", delay / 1000);
 803 #endif
 804     if (!is_forced)
 805         mwait(direct->date);
 806
 807     /* Display the direct buffer returned by vout_RenderPicture */
 808     vout->p->displayed.date = mdate();
 809
 810     vout_DisplayWrapper(vout, direct);
 811
 812     vout_statistic_Update(&vout->p->statistic, 1, 0);
 813
 814     return VLC_SUCCESS;
 815 }
 816
 817 static int ThreadDisplayPicture(vout_thread_t *vout,
 818                                 bool now, mtime_t *deadline)
 819 {
 820     bool is_late_dropped = vout->p->is_late_dropped && !vout->p->pause.is_on && !now;
 821     bool first = !vout->p->displayed.current;
 822     if (first && ThreadDisplayPreparePicture(vout, true, is_late_dropped)) /* FIXME not sure it is ok */
 823         return VLC_EGENERIC;
 824     if (!vout->p->pause.is_on || now) {
 825         while (!vout->p->displayed.next) {
 826             if (ThreadDisplayPreparePicture(vout, false, is_late_dropped)) {
 827                 break;
 828             }
 829         }
 830     }
 831
 832     const mtime_t date = mdate();
 833     const mtime_t render_delay = vout_chrono_GetHigh(&vout->p->render) + VOUT_MWAIT_TOLERANCE;
 834
 835     mtime_t date_next = VLC_TS_INVALID;
 836     if (!vout->p->pause.is_on && vout->p->displayed.next)
 837         date_next = vout->p->displayed.next->date - render_delay;
 838
 839     /* FIXME/XXX we must redisplay the last decoded picture (because
 840      * of potential vout updated, or filters update or SPU update)
 841      * For now a high update period is needed but it coulmd be removed
 842      * if and only if:
 843      * - vout module emits events from theselves.
 844      * - *and* SPU is modified to emit an event or a deadline when needed.
 845      *
 846      * So it will be done latter.
 847      */
 848     mtime_t date_refresh = VLC_TS_INVALID;
 849     if (vout->p->displayed.date > VLC_TS_INVALID)
 850         date_refresh = vout->p->displayed.date + VOUT_REDISPLAY_DELAY - render_delay;
 851
 852     bool drop = now;
 853     if (date_next != VLC_TS_INVALID)
 854         drop |= date_next + 0 <= date;
 855
 856     bool refresh = false;
 857     if (date_refresh > VLC_TS_INVALID)
 858         refresh = date_refresh <= date;
 859
 860     if (!first && !refresh && !drop) {
 861         if (date_next != VLC_TS_INVALID && date_refresh != VLC_TS_INVALID)
 862             *deadline = __MIN(date_next, date_refresh);
 863         else if (date_next != VLC_TS_INVALID)
 864             *deadline = date_next;
 865         else if (date_refresh != VLC_TS_INVALID)
 866             *deadline = date_refresh;
 867         return VLC_EGENERIC;
 868     }
 869
 870     if (drop) {
 871         picture_Release(vout->p->displayed.current);
 872         vout->p->displayed.current = vout->p->displayed.next;
 873         vout->p->displayed.next    = NULL;
 874     }
 875     if (!vout->p->displayed.current)
 876         return VLC_EGENERIC;
 877
 878     bool is_forced = now || (!drop && refresh) || vout->p->displayed.current->b_force;
 879     return ThreadDisplayRenderPicture(vout, is_forced);
 880 }
 881
 882 static void ThreadManage(vout_thread_t *vout,
 883                          mtime_t *deadline,
 884                          vout_interlacing_support_t *interlacing,
 885                          vout_postprocessing_support_t *postprocessing)
 886 {
 887     vlc_mutex_lock(&vout->p->picture_lock);
 888
 889     *deadline = VLC_TS_INVALID;
 890     for (;;) {
 891         if (ThreadDisplayPicture(vout, false, deadline))
 892             break;
 893     }
 894
 895     const int  picture_qtype      = vout->p->displayed.qtype;
 896     const bool picture_interlaced = vout->p->displayed.is_interlaced;
 897
 898     vlc_mutex_unlock(&vout->p->picture_lock);
 899
 900     /* Post processing */
 901     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
 902
 903     /* Deinterlacing */
 904     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
 905
 906     vout_ManageWrapper(vout);
 907 }
 908
 909 static void ThreadDisplaySubpicture(vout_thread_t *vout,
 910                                     subpicture_t *subpicture)
 911 {
 912     spu_DisplaySubpicture(vout->p->p_spu, subpicture);
 913 }
 914
 915 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
 916 {
 917     spu_ClearChannel(vout->p->p_spu, channel);
 918 }
 919
 920 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
 921 {
 922     if (!vout->p->title.show)
 923         return;
 924
 925     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
 926                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
 927                  string);
 928 }
 929
 930 static void ThreadFilterFlush(vout_thread_t *vout)
 931 {
 932     if (vout->p->displayed.current)
 933         picture_Release( vout->p->displayed.current );
 934     vout->p->displayed.current = NULL;
 935
 936     if (vout->p->displayed.next)
 937         picture_Release( vout->p->displayed.next );
 938     vout->p->displayed.next = NULL;
 939
 940     vlc_mutex_lock(&vout->p->filter.lock);
 941     filter_chain_VideoFlush(vout->p->filter.chain_static);
 942     filter_chain_VideoFlush(vout->p->filter.chain_interactive);
 943     vlc_mutex_unlock(&vout->p->filter.lock);
 944 }
 945
 946 typedef struct {
 947     char           *name;
 948     config_chain_t *cfg;
 949 } vout_filter_t;
 950
 951 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
 952 {
 953     ThreadFilterFlush(vout);
 954
 955     vlc_array_t array_static;
 956     vlc_array_t array_interactive;
 957
 958     vlc_array_init(&array_static);
 959     vlc_array_init(&array_interactive);
 960     char *current = filters ? strdup(filters) : NULL;
 961     while (current) {
 962         config_chain_t *cfg;
 963         char *name;
 964         char *next = config_ChainCreate(&name, &cfg, current);
 965
 966         if (name && *name) {
 967             vout_filter_t *e = xmalloc(sizeof(*e));
 968             e->name = name;
 969             e->cfg  = cfg;
 970             if (!strcmp(e->name, "deinterlace") ||
 971                 !strcmp(e->name, "postproc")) {
 972                 vlc_array_append(&array_static, e);
 973             } else {
 974                 vlc_array_append(&array_interactive, e);
 975             }
 976         } else {
 977             if (cfg)
 978                 config_ChainDestroy(cfg);
 979             free(name);
 980         }
 981         free(current);
 982         current = next;
 983     }
 984
 985     es_format_t fmt;
 986     es_format_Init(&fmt, VIDEO_ES, vout->p->original.i_chroma);
 987     fmt.video = vout->p->original;
 988
 989     vlc_mutex_lock(&vout->p->filter.lock);
 990
 991     filter_chain_Reset(vout->p->filter.chain_static,      &fmt, &fmt);
 992     filter_chain_Reset(vout->p->filter.chain_interactive, &fmt, &fmt);
 993
 994     for (int a = 0; a < 2; a++) {
 995         vlc_array_t    *array = a == 0 ? &array_static :
 996                                          &array_interactive;
 997         filter_chain_t *chain = a == 0 ? vout->p->filter.chain_static :
 998                                          vout->p->filter.chain_interactive;
 999
1000         for (int i = 0; i < vlc_array_count(array); i++) {
1001             vout_filter_t *e = vlc_array_item_at_index(array, i);
1002             msg_Dbg(vout, "Adding '%s' as %s", e->name, a == 0 ? "static" : "interactive");
1003             if (!filter_chain_AppendFilter(chain, e->name, e->cfg, NULL, NULL)) {
1004                 msg_Err(vout, "Failed to add filter '%s'", e->name);
1005                 config_ChainDestroy(e->cfg);
1006             }
1007             free(e->name);
1008             free(e);
1009         }
1010         vlc_array_clear(array);
1011     }
1012
1013     vlc_mutex_unlock(&vout->p->filter.lock);
1014 }
1015
1016 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
1017 {
1018     spu_ChangeFilters(vout->p->p_spu, filters);
1019 }
1020 static void ThreadChangeSubMargin(vout_thread_t *vout, int margin)
1021 {
1022     spu_ChangeMargin(vout->p->p_spu, margin);
1023 }
1024
1025 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
1026 {
1027     assert(!vout->p->pause.is_on || !is_paused);
1028
1029     if (vout->p->pause.is_on) {
1030         const mtime_t duration = date - vout->p->pause.date;
1031
1032         if (vout->p->step.timestamp > VLC_TS_INVALID)
1033             vout->p->step.timestamp += duration;
1034         if (vout->p->step.last > VLC_TS_INVALID)
1035             vout->p->step.last += duration;
1036         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
1037         if (vout->p->displayed.decoded)
1038             vout->p->displayed.decoded->date += duration;
1039         spu_OffsetSubtitleDate(vout->p->p_spu, duration);
1040
1041         ThreadFilterFlush(vout);
1042     } else {
1043         vout->p->step.timestamp = VLC_TS_INVALID;
1044         vout->p->step.last      = VLC_TS_INVALID;
1045     }
1046     vout->p->pause.is_on = is_paused;
1047     vout->p->pause.date  = date;
1048 }
1049
1050 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
1051 {
1052     vout->p->step.timestamp = VLC_TS_INVALID;
1053     vout->p->step.last      = VLC_TS_INVALID;
1054
1055     ThreadFilterFlush(vout); /* FIXME too much */
1056
1057     picture_t *last = vout->p->displayed.decoded;
1058     if (last) {
1059         if (( below && last->date <= date) ||
1060             (!below && last->date >= date)) {
1061             picture_Release(last);
1062
1063             vout->p->displayed.decoded   = NULL;
1064             vout->p->displayed.date      = VLC_TS_INVALID;
1065             vout->p->displayed.timestamp = VLC_TS_INVALID;
1066         }
1067     }
1068
1069     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
1070 }
1071
1072 static void ThreadReset(vout_thread_t *vout)
1073 {
1074     ThreadFlush(vout, true, INT64_MAX);
1075     if (vout->p->decoder_pool)
1076         picture_pool_NonEmpty(vout->p->decoder_pool, true);
1077     vout->p->pause.is_on = false;
1078     vout->p->pause.date  = mdate();
1079 }
1080
1081 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
1082 {
1083     *duration = 0;
1084
1085     if (vout->p->step.last <= VLC_TS_INVALID)
1086         vout->p->step.last = vout->p->displayed.timestamp;
1087
1088     mtime_t dummy;
1089     if (ThreadDisplayPicture(vout, true, &dummy))
1090         return;
1091
1092     vout->p->step.timestamp = vout->p->displayed.timestamp;
1093
1094     if (vout->p->step.last > VLC_TS_INVALID &&
1095         vout->p->step.timestamp > vout->p->step.last) {
1096         *duration = vout->p->step.timestamp - vout->p->step.last;
1097         vout->p->step.last = vout->p->step.timestamp;
1098         /* TODO advance subpicture by the duration ... */
1099     }
1100 }
1101
1102 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
1103 {
1104     /* FIXME not sure setting "fullscreen" is good ... */
1105     var_SetBool(vout, "fullscreen", fullscreen);
1106     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
1107 }
1108
1109 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
1110 {
1111     vout_SetWindowState(vout->p->display.vd,
1112                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
1113                                     VOUT_WINDOW_STATE_NORMAL);
1114 }
1115
1116 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
1117 {
1118     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
1119 }
1120
1121 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
1122 {
1123     if (num * 10 < den) {
1124         num = den;
1125         den *= 10;
1126     } else if (num > den * 10) {
1127         num = den * 10;
1128     }
1129
1130     vout_SetDisplayZoom(vout->p->display.vd, num, den);
1131 }
1132
1133 static void ThreadChangeAspectRatio(vout_thread_t *vout,
1134                                     unsigned num, unsigned den)
1135 {
1136     const video_format_t *source = &vout->p->original;
1137
1138     if (num > 0 && den > 0) {
1139         num *= source->i_visible_height;
1140         den *= source->i_visible_width;
1141         vlc_ureduce(&num, &den, num, den, 0);
1142     }
1143     vout_SetDisplayAspect(vout->p->display.vd, num, den);
1144 }
1145
1146
1147 static void ThreadExecuteCropWindow(vout_thread_t *vout,
1148                                     unsigned crop_num, unsigned crop_den,
1149                                     unsigned x, unsigned y,
1150                                     unsigned width, unsigned height)
1151 {
1152     const video_format_t *source = &vout->p->original;
1153
1154     vout_SetDisplayCrop(vout->p->display.vd,
1155                         crop_num, crop_den,
1156                         source->i_x_offset + x,
1157                         source->i_y_offset + y,
1158                         width, height);
1159 }
1160 static void ThreadExecuteCropBorder(vout_thread_t *vout,
1161                                     unsigned left, unsigned top,
1162                                     unsigned right, unsigned bottom)
1163 {
1164     const video_format_t *source = &vout->p->original;
1165     ThreadExecuteCropWindow(vout, 0, 0,
1166                             left,
1167                             top,
1168                             /* At worst, it becomes < 0 (but unsigned) and will be rejected */
1169                             source->i_visible_width  - (left + right),
1170                             source->i_visible_height - (top  + bottom));
1171 }
1172
1173 static void ThreadExecuteCropRatio(vout_thread_t *vout,
1174                                    unsigned num, unsigned den)
1175 {
1176     const video_format_t *source = &vout->p->original;
1177     ThreadExecuteCropWindow(vout, num, den,
1178                             0, 0,
1179                             source->i_visible_width,
1180                             source->i_visible_height);
1181 }
1182
1183 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
1184 {
1185     vlc_mouse_Init(&vout->p->mouse);
1186     vout->p->decoder_fifo = picture_fifo_New();
1187     vout->p->decoder_pool = NULL;
1188     vout->p->display_pool = NULL;
1189     vout->p->private_pool = NULL;
1190
1191     vout->p->filter.chain_static =
1192         filter_chain_New( vout, "video filter2", false,
1193                           VoutVideoFilterStaticAllocationSetup, NULL, vout);
1194     vout->p->filter.chain_interactive =
1195         filter_chain_New( vout, "video filter2", false,
1196                           VoutVideoFilterInteractiveAllocationSetup, NULL, vout);
1197
1198     vout_display_state_t state_default;
1199     if (!state) {
1200         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
1201         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
1202                                                                            VOUT_WINDOW_STATE_NORMAL;
1203         state_default.sar.num = 0;
1204         state_default.sar.den = 0;
1205
1206         state = &state_default;
1207     }
1208
1209     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
1210         return VLC_EGENERIC;
1211     if (vout_InitWrapper(vout))
1212         return VLC_EGENERIC;
1213     assert(vout->p->decoder_pool);
1214
1215     vout->p->displayed.current       = NULL;
1216     vout->p->displayed.next          = NULL;
1217     vout->p->displayed.decoded       = NULL;
1218     vout->p->displayed.date          = VLC_TS_INVALID;
1219     vout->p->displayed.timestamp     = VLC_TS_INVALID;
1220     vout->p->displayed.qtype         = QTYPE_NONE;
1221     vout->p->displayed.is_interlaced = false;
1222
1223     vout->p->step.last               = VLC_TS_INVALID;
1224     vout->p->step.timestamp          = VLC_TS_INVALID;
1225
1226     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
1227     return VLC_SUCCESS;
1228 }
1229
1230 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
1231 {
1232     /* Destroy translation tables */
1233     if (vout->p->display.vd) {
1234         if (vout->p->decoder_pool) {
1235             ThreadFlush(vout, true, INT64_MAX);
1236             vout_EndWrapper(vout);
1237         }
1238         vout_CloseWrapper(vout, state);
1239     }
1240
1241     /* Destroy the video filters2 */
1242     filter_chain_Delete(vout->p->filter.chain_interactive);
1243     filter_chain_Delete(vout->p->filter.chain_static);
1244
1245     if (vout->p->decoder_fifo)
1246         picture_fifo_Delete(vout->p->decoder_fifo);
1247     assert(!vout->p->decoder_pool);
1248 }
1249
1250 static void ThreadInit(vout_thread_t *vout)
1251 {
1252     vout->p->window.is_unused = true;
1253     vout->p->window.object    = NULL;
1254     vout->p->dead             = false;
1255     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1256     vout->p->pause.is_on      = false;
1257     vout->p->pause.date       = VLC_TS_INVALID;
1258
1259     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1260 }
1261
1262 static void ThreadClean(vout_thread_t *vout)
1263 {
1264     if (vout->p->window.object) {
1265         assert(vout->p->window.is_unused);
1266         vout_window_Delete(vout->p->window.object);
1267     }
1268     vout_chrono_Clean(&vout->p->render);
1269     vout->p->dead = true;
1270     vout_control_Dead(&vout->p->control);
1271 }
1272
1273 static int ThreadReinit(vout_thread_t *vout,
1274                         const vout_configuration_t *cfg)
1275 {
1276     video_format_t original;
1277     if (VoutValidateFormat(&original, cfg->fmt)) {
1278         ThreadStop(vout, NULL);
1279         ThreadClean(vout);
1280         return VLC_EGENERIC;
1281     }
1282     if (video_format_IsSimilar(&original, &vout->p->original)) {
1283         if (cfg->dpb_size <= vout->p->dpb_size)
1284             return VLC_SUCCESS;
1285         msg_Warn(vout, "DPB need to be increased");
1286     }
1287
1288     vout_display_state_t state;
1289     memset(&state, 0, sizeof(state));
1290
1291     ThreadStop(vout, &state);
1292
1293     if (!state.cfg.is_fullscreen) {
1294         state.cfg.display.width  = 0;
1295         state.cfg.display.height = 0;
1296     }
1297     state.sar.num = 0;
1298     state.sar.den = 0;
1299     /* FIXME current vout "variables" are not in sync here anymore
1300      * and I am not sure what to do */
1301
1302     vout->p->original = original;
1303     vout->p->dpb_size = cfg->dpb_size;
1304     if (ThreadStart(vout, &state)) {
1305         ThreadClean(vout);
1306         return VLC_EGENERIC;
1307     }
1308     return VLC_SUCCESS;
1309 }
1310
1311 /*****************************************************************************
1312  * Thread: video output thread
1313  *****************************************************************************
1314  * Video output thread. This function does only returns when the thread is
1315  * terminated. It handles the pictures arriving in the video heap and the
1316  * display device events.
1317  *****************************************************************************/
1318 static void *Thread(void *object)
1319 {
1320     vout_thread_t *vout = object;
1321
1322     vout_interlacing_support_t interlacing = {
1323         .is_interlaced = false,
1324         .date = mdate(),
1325     };
1326     vout_postprocessing_support_t postprocessing = {
1327         .qtype = QTYPE_NONE,
1328     };
1329
1330     mtime_t deadline = VLC_TS_INVALID;
1331     for (;;) {
1332         vout_control_cmd_t cmd;
1333
1334         /* FIXME remove thoses ugly timeouts
1335          */
1336         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1337             switch(cmd.type) {
1338             case VOUT_CONTROL_INIT:
1339                 ThreadInit(vout);
1340                 if (ThreadStart(vout, NULL)) {
1341                     ThreadStop(vout, NULL);
1342                     ThreadClean(vout);
1343                     return NULL;
1344                 }
1345                 break;
1346             case VOUT_CONTROL_CLEAN:
1347                 ThreadStop(vout, NULL);
1348                 ThreadClean(vout);
1349                 return NULL;
1350             case VOUT_CONTROL_REINIT:
1351                 if (ThreadReinit(vout, cmd.u.cfg))
1352                     return NULL;
1353                 break;
1354             case VOUT_CONTROL_SUBPICTURE:
1355                 ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1356                 cmd.u.subpicture = NULL;
1357                 break;
1358             case VOUT_CONTROL_FLUSH_SUBPICTURE:
1359                 ThreadFlushSubpicture(vout, cmd.u.integer);
1360                 break;
1361             case VOUT_CONTROL_OSD_TITLE:
1362                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1363                 break;
1364             case VOUT_CONTROL_CHANGE_FILTERS:
1365                 ThreadChangeFilters(vout, cmd.u.string);
1366                 break;
1367             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1368                 ThreadChangeSubFilters(vout, cmd.u.string);
1369                 break;
1370             case VOUT_CONTROL_CHANGE_SUB_MARGIN:
1371                 ThreadChangeSubMargin(vout, cmd.u.integer);
1372                 break;
1373             case VOUT_CONTROL_PAUSE:
1374                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1375                 break;
1376             case VOUT_CONTROL_FLUSH:
1377                 ThreadFlush(vout, false, cmd.u.time);
1378                 break;
1379             case VOUT_CONTROL_RESET:
1380                 ThreadReset(vout);
1381                 break;
1382             case VOUT_CONTROL_STEP:
1383                 ThreadStep(vout, cmd.u.time_ptr);
1384                 break;
1385             case VOUT_CONTROL_FULLSCREEN:
1386                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1387                 break;
1388             case VOUT_CONTROL_ON_TOP:
1389                 ThreadChangeOnTop(vout, cmd.u.boolean);
1390                 break;
1391             case VOUT_CONTROL_DISPLAY_FILLED:
1392                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1393                 break;
1394             case VOUT_CONTROL_ZOOM:
1395                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1396                 break;
1397             case VOUT_CONTROL_ASPECT_RATIO:
1398                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1399                 break;
1400            case VOUT_CONTROL_CROP_RATIO:
1401                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1402                 break;
1403             case VOUT_CONTROL_CROP_WINDOW:
1404                 ThreadExecuteCropWindow(vout, 0, 0,
1405                                         cmd.u.window.x, cmd.u.window.y,
1406                                         cmd.u.window.width, cmd.u.window.height);
1407                 break;
1408             case VOUT_CONTROL_CROP_BORDER:
1409                 ThreadExecuteCropBorder(vout,
1410                                         cmd.u.border.left,  cmd.u.border.top,
1411                                         cmd.u.border.right, cmd.u.border.bottom);
1412                 break;
1413             default:
1414                 break;
1415             }
1416             vout_control_cmd_Clean(&cmd);
1417         }
1418
1419         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1420     }
1421 }
1422