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(1000))
  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     vout->p->i_par_num =
 122     vout->p->i_par_den = 1;
 123
 124     vout_snapshot_Init(&vout->p->snapshot);
 125
 126     /* Initialize locks */
 127     vlc_mutex_init(&vout->p->picture_lock);
 128     vlc_mutex_init(&vout->p->vfilter_lock);
 129
 130     /* Attach the new object now so we can use var inheritance below */
 131     vlc_object_attach(vout, object);
 132
 133     /* Initialize subpicture unit */
 134     vout->p->p_spu = spu_Create(vout);
 135
 136     /* Take care of some "interface/control" related initialisations */
 137     vout_IntfInit(vout);
 138
 139     /* Get splitter name if present */
 140     char *splitter_name = var_GetNonEmptyString(vout, "vout-filter");
 141     if (splitter_name) {
 142         if (asprintf(&vout->p->splitter_name, "%s,none", splitter_name) < 0)
 143             vout->p->splitter_name = NULL;
 144         free(splitter_name);
 145     } else {
 146         vout->p->splitter_name = NULL;
 147     }
 148
 149     /* */
 150     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 151
 152     /* */
 153     vlc_object_set_destructor(vout, VoutDestructor);
 154
 155     /* */
 156     if (vlc_clone(&vout->p->thread, Thread, vout,
 157                   VLC_THREAD_PRIORITY_OUTPUT)) {
 158         spu_Destroy(vout->p->p_spu);
 159         vlc_object_release(vout);
 160         return NULL;
 161     }
 162
 163     vout_control_WaitEmpty(&vout->p->control);
 164
 165     if (vout->p->dead) {
 166         msg_Err(vout, "video output creation failed");
 167         vout_CloseAndRelease(vout);
 168         return NULL;
 169     }
 170
 171     vout->p->input = cfg->input;
 172     if (vout->p->input)
 173         spu_Attach(vout->p->p_spu, vout->p->input, true);
 174
 175     return vout;
 176 }
 177
 178 vout_thread_t *(vout_Request)(vlc_object_t *object,
 179                               const vout_configuration_t *cfg)
 180 {
 181     vout_thread_t *vout = cfg->vout;
 182     if (cfg->change_fmt && !cfg->fmt) {
 183         if (vout)
 184             vout_CloseAndRelease(vout);
 185         return NULL;
 186     }
 187
 188     /* If a vout is provided, try reusing it */
 189     if (vout) {
 190         if (vout->p->input != cfg->input) {
 191             if (vout->p->input)
 192                 spu_Attach(vout->p->p_spu, vout->p->input, false);
 193             vout->p->input = cfg->input;
 194             if (vout->p->input)
 195                 spu_Attach(vout->p->p_spu, vout->p->input, true);
 196         }
 197
 198         if (cfg->change_fmt) {
 199             vout_control_cmd_t cmd;
 200             vout_control_cmd_Init(&cmd, VOUT_CONTROL_REINIT);
 201             cmd.u.cfg = cfg;
 202
 203             vout_control_Push(&vout->p->control, &cmd);
 204             vout_control_WaitEmpty(&vout->p->control);
 205         }
 206
 207         if (!vout->p->dead) {
 208             msg_Dbg(object, "reusing provided vout");
 209             return vout;
 210         }
 211         vout_CloseAndRelease(vout);
 212
 213         msg_Warn(object, "cannot reuse provided vout");
 214     }
 215     return VoutCreate(object, cfg);
 216 }
 217
 218 /*****************************************************************************
 219  * vout_Close: Close a vout created by VoutCreate.
 220  *****************************************************************************
 221  * You HAVE to call it on vout created by VoutCreate before vlc_object_release.
 222  * You should NEVER call it on vout not obtained through VoutCreate
 223  * (like with vout_Request or vlc_object_find.)
 224  * You can use vout_CloseAndRelease() as a convenience method.
 225  *****************************************************************************/
 226 void vout_Close(vout_thread_t *vout)
 227 {
 228     assert(vout);
 229
 230     if (vout->p->input)
 231         spu_Attach(vout->p->p_spu, vout->p->input, false);
 232
 233     vout_snapshot_End(&vout->p->snapshot);
 234
 235     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 236     vlc_join(vout->p->thread, NULL);
 237
 238     spu_Destroy(vout->p->p_spu);
 239 }
 240
 241 /* */
 242 static void VoutDestructor(vlc_object_t *object)
 243 {
 244     vout_thread_t *vout = (vout_thread_t *)object;
 245
 246     /* Make sure the vout was stopped first */
 247     //assert(!vout->p_module);
 248
 249     free(vout->p->splitter_name);
 250
 251     /* Destroy the locks */
 252     vlc_mutex_destroy(&vout->p->picture_lock);
 253     vlc_mutex_destroy(&vout->p->vfilter_lock);
 254     vout_control_Clean(&vout->p->control);
 255
 256     /* */
 257     vout_statistic_Clean(&vout->p->statistic);
 258
 259     /* */
 260     vout_snapshot_Clean(&vout->p->snapshot);
 261
 262     video_format_Clean(&vout->p->original);
 263 }
 264
 265 /* */
 266 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 267 {
 268     vout_control_cmd_t cmd;
 269     vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
 270     cmd.u.pause.is_on = is_paused;
 271     cmd.u.pause.date  = date;
 272     vout_control_Push(&vout->p->control, &cmd);
 273
 274     vout_control_WaitEmpty(&vout->p->control);
 275 }
 276
 277 void vout_GetResetStatistic(vout_thread_t *vout, int *displayed, int *lost)
 278 {
 279     vout_statistic_GetReset( &vout->p->statistic, displayed, lost );
 280 }
 281
 282 void vout_Flush(vout_thread_t *vout, mtime_t date)
 283 {
 284     vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
 285     vout_control_WaitEmpty(&vout->p->control);
 286 }
 287
 288 void vout_Reset(vout_thread_t *vout)
 289 {
 290     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
 291     vout_control_WaitEmpty(&vout->p->control);
 292 }
 293
 294 bool vout_IsEmpty(vout_thread_t *vout)
 295 {
 296     vlc_mutex_lock(&vout->p->picture_lock);
 297
 298     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 299     if (picture)
 300         picture_Release(picture);
 301
 302     vlc_mutex_unlock(&vout->p->picture_lock);
 303
 304     return !picture;
 305 }
 306
 307 void vout_FixLeaks( vout_thread_t *vout )
 308 {
 309     vlc_mutex_lock(&vout->p->picture_lock);
 310
 311     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 312     if (!picture) {
 313         picture = picture_pool_Get(vout->p->decoder_pool);
 314     }
 315
 316     if (picture) {
 317         picture_Release(picture);
 318         /* Not all pictures has been displayed yet or some are
 319          * free */
 320         vlc_mutex_unlock(&vout->p->picture_lock);
 321         return;
 322     }
 323
 324     /* There is no reason that no pictures are available, force one
 325      * from the pool, becarefull with it though */
 326     msg_Err(vout, "pictures leaked, trying to workaround");
 327
 328     /* */
 329     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 330
 331     vlc_mutex_unlock(&vout->p->picture_lock);
 332 }
 333 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 334 {
 335     vout_control_cmd_t cmd;
 336     vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
 337     cmd.u.time_ptr = duration;
 338
 339     vout_control_Push(&vout->p->control, &cmd);
 340     vout_control_WaitEmpty(&vout->p->control);
 341 }
 342
 343 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
 344 {
 345     assert(title);
 346     vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
 347 }
 348
 349 void vout_PutSubpicture( vout_thread_t *vout, subpicture_t *subpic )
 350 {
 351     vout_control_cmd_t cmd;
 352     vout_control_cmd_Init(&cmd, VOUT_CONTROL_SUBPICTURE);
 353     cmd.u.subpicture = subpic;
 354
 355     vout_control_Push(&vout->p->control, &cmd);
 356 }
 357 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 358 {
 359     return spu_RegisterChannel(vout->p->p_spu);
 360 }
 361 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 362 {
 363     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 364                              channel);
 365 }
 366
 367 /* vout_Control* are usable by anyone at anytime */
 368 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 369 {
 370     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 371                           fullscreen);
 372 }
 373 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 374 {
 375     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 376                           is_on_top);
 377 }
 378 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 379 {
 380     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 381                           is_filled);
 382 }
 383 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 384 {
 385     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 386                           num, den);
 387 }
 388 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 389                                          unsigned num, unsigned den)
 390 {
 391     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 392                           num, den);
 393 }
 394 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 395                                  unsigned num, unsigned den)
 396 {
 397     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 398                           num, den);
 399 }
 400 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 401                                   int x, int y, int width, int height)
 402 {
 403     vout_control_cmd_t cmd;
 404     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 405     cmd.u.window.x      = x;
 406     cmd.u.window.y      = y;
 407     cmd.u.window.width  = width;
 408     cmd.u.window.height = height;
 409
 410     vout_control_Push(&vout->p->control, &cmd);
 411 }
 412 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 413                                   int left, int top, int right, int bottom)
 414 {
 415     vout_control_cmd_t cmd;
 416     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 417     cmd.u.border.left   = left;
 418     cmd.u.border.top    = top;
 419     cmd.u.border.right  = right;
 420     cmd.u.border.bottom = bottom;
 421
 422     vout_control_Push(&vout->p->control, &cmd);
 423 }
 424 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 425 {
 426     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 427                             filters);
 428 }
 429 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 430 {
 431     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 432                             filters);
 433 }
 434
 435 /* */
 436 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 437 {
 438     /* Load configuration */
 439     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 440     cfg->display.title = title;
 441     const int display_width = var_CreateGetInteger(vout, "width");
 442     const int display_height = var_CreateGetInteger(vout, "height");
 443     cfg->display.width   = display_width > 0  ? display_width  : 0;
 444     cfg->display.height  = display_height > 0 ? display_height : 0;
 445     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 446     cfg->display.sar.num = 1; /* TODO monitor AR */
 447     cfg->display.sar.den = 1;
 448     unsigned zoom_den = 1000;
 449     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 450     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 451     cfg->zoom.num = zoom_num;
 452     cfg->zoom.den = zoom_den;
 453     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 454     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 455     const int align_mask = var_CreateGetInteger(vout, "align");
 456     if (align_mask & 0x1)
 457         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 458     else if (align_mask & 0x2)
 459         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 460     if (align_mask & 0x4)
 461         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 462     else if (align_mask & 0x8)
 463         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 464 }
 465
 466 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 467                                       const vout_window_cfg_t *cfg)
 468 {
 469     VLC_UNUSED(vd);
 470     vout_window_cfg_t cfg_override = *cfg;
 471
 472     if (!var_InheritBool( vout, "embedded-video"))
 473         cfg_override.is_standalone = true;
 474
 475     if (vout->p->window.is_unused && vout->p->window.object) {
 476         assert(!vout->p->splitter_name);
 477         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 478             cfg_override.type           == vout->p->window.cfg.type) {
 479             /* Reuse the stored window */
 480             msg_Dbg(vout, "Reusing previous vout window");
 481             vout_window_t *window = vout->p->window.object;
 482             if (cfg_override.width  != vout->p->window.cfg.width ||
 483                 cfg_override.height != vout->p->window.cfg.height)
 484                 vout_window_SetSize(window,
 485                                     cfg_override.width, cfg_override.height);
 486             vout->p->window.is_unused = false;
 487             vout->p->window.cfg       = cfg_override;
 488             return window;
 489         }
 490
 491         vout_window_Delete(vout->p->window.object);
 492         vout->p->window.is_unused = true;
 493         vout->p->window.object    = NULL;
 494     }
 495
 496     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), NULL,
 497                                             &cfg_override);
 498     if (!window)
 499         return NULL;
 500     if (!vout->p->splitter_name) {
 501         vout->p->window.is_unused = false;
 502         vout->p->window.cfg       = cfg_override;
 503         vout->p->window.object    = window;
 504     }
 505     return window;
 506 }
 507
 508 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 509                               vout_window_t *window)
 510 {
 511     VLC_UNUSED(vd);
 512     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 513         vout->p->window.is_unused = true;
 514     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 515         vout_window_Delete(vout->p->window.object);
 516         vout->p->window.is_unused = true;
 517         vout->p->window.object    = NULL;
 518     } else if (window) {
 519         vout_window_Delete(window);
 520     }
 521 }
 522
 523 /* */
 524 static picture_t *VoutVideoFilterNewPicture(filter_t *filter)
 525 {
 526     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 527     return picture_pool_Get(vout->p->private_pool);
 528 }
 529 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 530 {
 531     VLC_UNUSED(filter);
 532     picture_Release(picture);
 533 }
 534 static int VoutVideoFilterAllocationSetup(filter_t *filter, void *data)
 535 {
 536     filter->pf_video_buffer_new = VoutVideoFilterNewPicture;
 537     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 538     filter->p_owner             = data; /* vout */
 539     return VLC_SUCCESS;
 540 }
 541
 542 /* */
 543 static int ThreadDisplayPicture(vout_thread_t *vout,
 544                                 bool now, mtime_t *deadline)
 545 {
 546     vout_display_t *vd = vout->p->display.vd;
 547     int displayed_count = 0;
 548     int lost_count = 0;
 549
 550     for (;;) {
 551         const mtime_t date = mdate();
 552         const bool is_paused = vout->p->pause.is_on;
 553         bool redisplay = is_paused && !now && vout->p->displayed.decoded;
 554         bool is_forced;
 555
 556         /* FIXME/XXX we must redisplay the last decoded picture (because
 557          * of potential vout updated, or filters update or SPU update)
 558          * For now a high update period is needed but it coulmd be removed
 559          * if and only if:
 560          * - vout module emits events from theselves.
 561          * - *and* SPU is modified to emit an event or a deadline when needed.
 562          *
 563          * So it will be done latter.
 564          */
 565         if (!redisplay) {
 566             picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
 567             if (peek) {
 568                 is_forced = peek->b_force || is_paused || now;
 569                 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
 570                 picture_Release(peek);
 571             } else {
 572                 redisplay = true;
 573             }
 574         }
 575         if (redisplay) {
 576              /* FIXME a better way for this delay is needed */
 577             const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
 578             if (date_update > date || !vout->p->displayed.decoded) {
 579                 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
 580                 break;
 581             }
 582             /* */
 583             is_forced = true;
 584             *deadline = date - vout_chrono_GetHigh(&vout->p->render);
 585         }
 586         if (*deadline > VOUT_MWAIT_TOLERANCE)
 587             *deadline -= VOUT_MWAIT_TOLERANCE;
 588
 589         /* If we are too early and can wait, do it */
 590         if (date < *deadline && !now)
 591             break;
 592
 593         picture_t *decoded;
 594         if (redisplay) {
 595             decoded = vout->p->displayed.decoded;
 596             vout->p->displayed.decoded = NULL;
 597         } else {
 598             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 599             assert(decoded);
 600             if (!is_forced && !vout->p->is_late_dropped) {
 601                 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
 602                 const mtime_t late = predicted - decoded->date;
 603                 if (late > 0) {
 604                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 605                     if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 606                         msg_Warn(vout, "rejected picture because of render time");
 607                         /* TODO */
 608                         picture_Release(decoded);
 609                         lost_count++;
 610                         break;
 611                     }
 612                 }
 613             }
 614
 615             vout->p->displayed.is_interlaced = !decoded->b_progressive;
 616             vout->p->displayed.qtype         = decoded->i_qtype;
 617         }
 618         vout->p->displayed.timestamp = decoded->date;
 619
 620         /* */
 621         if (vout->p->displayed.decoded)
 622             picture_Release(vout->p->displayed.decoded);
 623         picture_Hold(decoded);
 624         vout->p->displayed.decoded = decoded;
 625
 626         /* */
 627         vout_chrono_Start(&vout->p->render);
 628
 629         picture_t *filtered = NULL;
 630         if (decoded) {
 631             vlc_mutex_lock(&vout->p->vfilter_lock);
 632             filtered = filter_chain_VideoFilter(vout->p->vfilter_chain, decoded);
 633             //assert(filtered == decoded); // TODO implement
 634             vlc_mutex_unlock(&vout->p->vfilter_lock);
 635             if (!filtered)
 636                 continue;
 637         }
 638
 639         /*
 640          * Check for subpictures to display
 641          */
 642         const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 643         mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 644         if (vout->p->pause.is_on)
 645             spu_render_time = vout->p->pause.date;
 646         else
 647             spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 648
 649         subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 650                                                    spu_render_time,
 651                                                    do_snapshot);
 652         /*
 653          * Perform rendering
 654          *
 655          * We have to:
 656          * - be sure to end up with a direct buffer.
 657          * - blend subtitles, and in a fast access buffer
 658          */
 659         picture_t *direct = NULL;
 660         if (filtered &&
 661             (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 662             picture_t *render;
 663             if (vout->p->is_decoder_pool_slow)
 664                 render = picture_NewFromFormat(&vd->source);
 665             else if (vout->p->decoder_pool != vout->p->display_pool)
 666                 render = picture_pool_Get(vout->p->display_pool);
 667             else
 668                 render = picture_pool_Get(vout->p->private_pool);
 669
 670             if (render) {
 671                 picture_Copy(render, filtered);
 672
 673                 spu_RenderSubpictures(vout->p->p_spu,
 674                                       render, &vd->source,
 675                                       subpic, &vd->source, spu_render_time);
 676             }
 677             if (vout->p->is_decoder_pool_slow) {
 678                 direct = picture_pool_Get(vout->p->display_pool);
 679                 if (direct)
 680                     picture_Copy(direct, render);
 681                 picture_Release(render);
 682
 683             } else {
 684                 direct = render;
 685             }
 686             picture_Release(filtered);
 687             filtered = NULL;
 688         } else {
 689             direct = filtered;
 690         }
 691
 692         /*
 693          * Take a snapshot if requested
 694          */
 695         if (direct && do_snapshot)
 696             vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
 697
 698         /* Render the direct buffer returned by vout_RenderPicture */
 699         if (direct) {
 700             vout_RenderWrapper(vout, direct);
 701
 702             vout_chrono_Stop(&vout->p->render);
 703 #if 0
 704             {
 705             static int i = 0;
 706             if (((i++)%10) == 0)
 707                 msg_Info(vout, "render: avg %d ms var %d ms",
 708                          (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 709             }
 710 #endif
 711         }
 712
 713         /* Wait the real date (for rendering jitter) */
 714         if (!is_forced)
 715             mwait(decoded->date);
 716
 717         /* Display the direct buffer returned by vout_RenderPicture */
 718         vout->p->displayed.date = mdate();
 719         if (direct)
 720             vout_DisplayWrapper(vout, direct);
 721
 722         displayed_count++;
 723         break;
 724     }
 725
 726     vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
 727     if (displayed_count <= 0)
 728         return VLC_EGENERIC;
 729     return VLC_SUCCESS;
 730 }
 731
 732 static void ThreadManage(vout_thread_t *vout,
 733                          mtime_t *deadline,
 734                          vout_interlacing_support_t *interlacing,
 735                          vout_postprocessing_support_t *postprocessing)
 736 {
 737     vlc_mutex_lock(&vout->p->picture_lock);
 738
 739     *deadline = VLC_TS_INVALID;
 740     ThreadDisplayPicture(vout, false, deadline);
 741
 742     const int  picture_qtype      = vout->p->displayed.qtype;
 743     const bool picture_interlaced = vout->p->displayed.is_interlaced;
 744
 745     vlc_mutex_unlock(&vout->p->picture_lock);
 746
 747     /* Post processing */
 748     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
 749
 750     /* Deinterlacing */
 751     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
 752
 753     vout_ManageWrapper(vout);
 754 }
 755
 756 static void ThreadDisplaySubpicture(vout_thread_t *vout,
 757                                     subpicture_t *subpicture)
 758 {
 759     spu_DisplaySubpicture(vout->p->p_spu, subpicture);
 760 }
 761
 762 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
 763 {
 764     spu_ClearChannel(vout->p->p_spu, channel);
 765 }
 766
 767 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
 768 {
 769     if (!vout->p->title.show)
 770         return;
 771
 772     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
 773                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
 774                  string);
 775 }
 776
 777 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
 778 {
 779     es_format_t fmt;
 780     es_format_Init(&fmt, VIDEO_ES, vout->p->original.i_chroma);
 781     fmt.video = vout->p->original;
 782
 783     vlc_mutex_lock(&vout->p->vfilter_lock);
 784
 785     filter_chain_Reset(vout->p->vfilter_chain, &fmt, &fmt);
 786     if (filter_chain_AppendFromString(vout->p->vfilter_chain,
 787                                       filters) < 0)
 788         msg_Err(vout, "Video filter chain creation failed");
 789
 790     vlc_mutex_unlock(&vout->p->vfilter_lock);
 791 }
 792
 793 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
 794 {
 795     spu_ChangeFilters(vout->p->p_spu, filters);
 796 }
 797
 798 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 799 {
 800     assert(!vout->p->pause.is_on || !is_paused);
 801
 802     if (vout->p->pause.is_on) {
 803         const mtime_t duration = date - vout->p->pause.date;
 804
 805         if (vout->p->step.timestamp > VLC_TS_INVALID)
 806             vout->p->step.timestamp += duration;
 807         if (vout->p->step.last > VLC_TS_INVALID)
 808             vout->p->step.last += duration;
 809         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
 810         if (vout->p->displayed.decoded)
 811             vout->p->displayed.decoded->date += duration;
 812
 813         spu_OffsetSubtitleDate(vout->p->p_spu, duration);
 814     } else {
 815         vout->p->step.timestamp = VLC_TS_INVALID;
 816         vout->p->step.last      = VLC_TS_INVALID;
 817     }
 818     vout->p->pause.is_on = is_paused;
 819     vout->p->pause.date  = date;
 820 }
 821
 822 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
 823 {
 824     vout->p->step.timestamp = VLC_TS_INVALID;
 825     vout->p->step.last      = VLC_TS_INVALID;
 826
 827     picture_t *last = vout->p->displayed.decoded;
 828     if (last) {
 829         if (( below && last->date <= date) ||
 830             (!below && last->date >= date)) {
 831             picture_Release(last);
 832
 833             vout->p->displayed.decoded   = NULL;
 834             vout->p->displayed.date      = VLC_TS_INVALID;
 835             vout->p->displayed.timestamp = VLC_TS_INVALID;
 836         }
 837     }
 838     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
 839 }
 840
 841 static void ThreadReset(vout_thread_t *vout)
 842 {
 843     ThreadFlush(vout, true, INT64_MAX);
 844     if (vout->p->decoder_pool)
 845         picture_pool_NonEmpty(vout->p->decoder_pool, true);
 846     vout->p->pause.is_on = false;
 847     vout->p->pause.date  = mdate();
 848 }
 849
 850 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
 851 {
 852     *duration = 0;
 853
 854     if (vout->p->step.last <= VLC_TS_INVALID)
 855         vout->p->step.last = vout->p->displayed.timestamp;
 856
 857     mtime_t dummy;
 858     if (ThreadDisplayPicture(vout, true, &dummy))
 859         return;
 860
 861     vout->p->step.timestamp = vout->p->displayed.timestamp;
 862
 863     if (vout->p->step.last > VLC_TS_INVALID &&
 864         vout->p->step.timestamp > vout->p->step.last) {
 865         *duration = vout->p->step.timestamp - vout->p->step.last;
 866         vout->p->step.last = vout->p->step.timestamp;
 867         /* TODO advance subpicture by the duration ... */
 868     }
 869 }
 870
 871 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 872 {
 873     /* FIXME not sure setting "fullscreen" is good ... */
 874     var_SetBool(vout, "fullscreen", fullscreen);
 875     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
 876 }
 877
 878 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
 879 {
 880     vout_SetWindowState(vout->p->display.vd,
 881                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
 882                                     VOUT_WINDOW_STATE_NORMAL);
 883 }
 884
 885 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 886 {
 887     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
 888 }
 889
 890 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
 891 {
 892     if (num * 10 < den) {
 893         num = den;
 894         den *= 10;
 895     } else if (num > den * 10) {
 896         num = den * 10;
 897     }
 898
 899     vout_SetDisplayZoom(vout->p->display.vd, num, den);
 900 }
 901
 902 static void ThreadChangeAspectRatio(vout_thread_t *vout,
 903                                     unsigned num, unsigned den)
 904 {
 905     const video_format_t *source = &vout->p->original;
 906
 907     if (num > 0 && den > 0) {
 908         num *= source->i_visible_height;
 909         den *= source->i_visible_width;
 910         vlc_ureduce(&num, &den, num, den, 0);
 911     }
 912     vout_SetDisplayAspect(vout->p->display.vd, num, den);
 913 }
 914
 915
 916 static void ThreadExecuteCropWindow(vout_thread_t *vout,
 917                                     unsigned crop_num, unsigned crop_den,
 918                                     unsigned x, unsigned y,
 919                                     unsigned width, unsigned height)
 920 {
 921     const video_format_t *source = &vout->p->original;
 922
 923     vout_SetDisplayCrop(vout->p->display.vd,
 924                         crop_num, crop_den,
 925                         source->i_x_offset + x,
 926                         source->i_y_offset + y,
 927                         width, height);
 928 }
 929 static void ThreadExecuteCropBorder(vout_thread_t *vout,
 930                                     unsigned left, unsigned top,
 931                                     unsigned right, unsigned bottom)
 932 {
 933     const video_format_t *source = &vout->p->original;
 934     ThreadExecuteCropWindow(vout, 0, 0,
 935                             left,
 936                             top,
 937                             /* At worst, it becomes < 0 (but unsigned) and will be rejected */
 938                             source->i_visible_width  - (left + right),
 939                             source->i_visible_height - (top  + bottom));
 940 }
 941
 942 static void ThreadExecuteCropRatio(vout_thread_t *vout,
 943                                    unsigned num, unsigned den)
 944 {
 945     const video_format_t *source = &vout->p->original;
 946     ThreadExecuteCropWindow(vout, num, den,
 947                             0, 0,
 948                             source->i_visible_width,
 949                             source->i_visible_height);
 950 }
 951
 952 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
 953 {
 954     vlc_mouse_Init(&vout->p->mouse);
 955     vout->p->decoder_fifo = picture_fifo_New();
 956     vout->p->decoder_pool = NULL;
 957     vout->p->display_pool = NULL;
 958     vout->p->private_pool = NULL;
 959
 960     vout->p->vfilter_chain =
 961         filter_chain_New( vout, "video filter2", false,
 962                           VoutVideoFilterAllocationSetup, NULL, vout);
 963
 964     vout_display_state_t state_default;
 965     if (!state) {
 966         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
 967         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
 968                                                                            VOUT_WINDOW_STATE_NORMAL;
 969         state_default.sar.num = 0;
 970         state_default.sar.den = 0;
 971
 972         state = &state_default;
 973     }
 974
 975     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
 976         return VLC_EGENERIC;
 977     if (vout_InitWrapper(vout))
 978         return VLC_EGENERIC;
 979     assert(vout->p->decoder_pool);
 980
 981     vout->p->displayed.decoded       = NULL;
 982     vout->p->displayed.date          = VLC_TS_INVALID;
 983     vout->p->displayed.decoded       = NULL;
 984     vout->p->displayed.timestamp     = VLC_TS_INVALID;
 985     vout->p->displayed.qtype         = QTYPE_NONE;
 986     vout->p->displayed.is_interlaced = false;
 987
 988     vout->p->step.last               = VLC_TS_INVALID;
 989     vout->p->step.timestamp          = VLC_TS_INVALID;
 990
 991     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
 992     return VLC_SUCCESS;
 993 }
 994
 995 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
 996 {
 997     /* Destroy the video filters2 */
 998     filter_chain_Delete(vout->p->vfilter_chain);
 999
1000     /* Destroy translation tables */
1001     if (vout->p->display.vd) {
1002         if (vout->p->decoder_pool) {
1003             ThreadFlush(vout, true, INT64_MAX);
1004             vout_EndWrapper(vout);
1005         }
1006         vout_CloseWrapper(vout, state);
1007     }
1008
1009     if (vout->p->decoder_fifo)
1010         picture_fifo_Delete(vout->p->decoder_fifo);
1011     assert(!vout->p->decoder_pool);
1012 }
1013
1014 static void ThreadInit(vout_thread_t *vout)
1015 {
1016     vout->p->window.is_unused = true;
1017     vout->p->window.object    = NULL;
1018     vout->p->dead             = false;
1019     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1020     vout->p->pause.is_on      = false;
1021     vout->p->pause.date       = VLC_TS_INVALID;
1022
1023     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1024 }
1025
1026 static void ThreadClean(vout_thread_t *vout)
1027 {
1028     if (vout->p->window.object) {
1029         assert(vout->p->window.is_unused);
1030         vout_window_Delete(vout->p->window.object);
1031     }
1032     vout_chrono_Clean(&vout->p->render);
1033     vout->p->dead = true;
1034     vout_control_Dead(&vout->p->control);
1035 }
1036
1037 static int ThreadReinit(vout_thread_t *vout,
1038                         const vout_configuration_t *cfg)
1039 {
1040     video_format_t original;
1041     if (VoutValidateFormat(&original, cfg->fmt)) {
1042         ThreadStop(vout, NULL);
1043         ThreadClean(vout);
1044         return VLC_EGENERIC;
1045     }
1046     if (video_format_IsSimilar(&original, &vout->p->original)) {
1047         if (cfg->dpb_size <= vout->p->dpb_size)
1048             return VLC_SUCCESS;
1049         msg_Warn(vout, "DPB need to be increased");
1050     }
1051
1052     vout_display_state_t state;
1053     memset(&state, 0, sizeof(state));
1054
1055     ThreadStop(vout, &state);
1056
1057     if (!state.cfg.is_fullscreen) {
1058         state.cfg.display.width  = 0;
1059         state.cfg.display.height = 0;
1060     }
1061     state.sar.num = 0;
1062     state.sar.den = 0;
1063     /* FIXME current vout "variables" are not in sync here anymore
1064      * and I am not sure what to do */
1065
1066     vout->p->original = original;
1067     vout->p->dpb_size = cfg->dpb_size;
1068     if (ThreadStart(vout, &state)) {
1069         ThreadClean(vout);
1070         return VLC_EGENERIC;
1071     }
1072     return VLC_SUCCESS;
1073 }
1074
1075 /*****************************************************************************
1076  * Thread: video output thread
1077  *****************************************************************************
1078  * Video output thread. This function does only returns when the thread is
1079  * terminated. It handles the pictures arriving in the video heap and the
1080  * display device events.
1081  *****************************************************************************/
1082 static void *Thread(void *object)
1083 {
1084     vout_thread_t *vout = object;
1085
1086     vout_interlacing_support_t interlacing = {
1087         .is_interlaced = false,
1088         .date = mdate(),
1089     };
1090     vout_postprocessing_support_t postprocessing = {
1091         .qtype = QTYPE_NONE,
1092     };
1093
1094     mtime_t deadline = VLC_TS_INVALID;
1095     for (;;) {
1096         vout_control_cmd_t cmd;
1097
1098         /* FIXME remove thoses ugly timeouts
1099          */
1100         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1101             switch(cmd.type) {
1102             case VOUT_CONTROL_INIT:
1103                 ThreadInit(vout);
1104                 if (ThreadStart(vout, NULL)) {
1105                     ThreadStop(vout, NULL);
1106                     ThreadClean(vout);
1107                     return NULL;
1108                 }
1109                 break;
1110             case VOUT_CONTROL_CLEAN:
1111                 ThreadStop(vout, NULL);
1112                 ThreadClean(vout);
1113                 return NULL;
1114             case VOUT_CONTROL_REINIT:
1115                 if (ThreadReinit(vout, cmd.u.cfg))
1116                     return NULL;
1117                 break;
1118             case VOUT_CONTROL_SUBPICTURE:
1119                 ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1120                 cmd.u.subpicture = NULL;
1121                 break;
1122             case VOUT_CONTROL_FLUSH_SUBPICTURE:
1123                 ThreadFlushSubpicture(vout, cmd.u.integer);
1124                 break;
1125             case VOUT_CONTROL_OSD_TITLE:
1126                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1127                 break;
1128             case VOUT_CONTROL_CHANGE_FILTERS:
1129                 ThreadChangeFilters(vout, cmd.u.string);
1130                 break;
1131             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1132                 ThreadChangeSubFilters(vout, cmd.u.string);
1133                 break;
1134             case VOUT_CONTROL_PAUSE:
1135                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1136                 break;
1137             case VOUT_CONTROL_FLUSH:
1138                 ThreadFlush(vout, false, cmd.u.time);
1139                 break;
1140             case VOUT_CONTROL_RESET:
1141                 ThreadReset(vout);
1142                 break;
1143             case VOUT_CONTROL_STEP:
1144                 ThreadStep(vout, cmd.u.time_ptr);
1145                 break;
1146             case VOUT_CONTROL_FULLSCREEN:
1147                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1148                 break;
1149             case VOUT_CONTROL_ON_TOP:
1150                 ThreadChangeOnTop(vout, cmd.u.boolean);
1151                 break;
1152             case VOUT_CONTROL_DISPLAY_FILLED:
1153                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1154                 break;
1155             case VOUT_CONTROL_ZOOM:
1156                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1157                 break;
1158             case VOUT_CONTROL_ASPECT_RATIO:
1159                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1160                 break;
1161            case VOUT_CONTROL_CROP_RATIO:
1162                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1163                 break;
1164             case VOUT_CONTROL_CROP_WINDOW:
1165                 ThreadExecuteCropWindow(vout, 0, 0,
1166                                         cmd.u.window.x, cmd.u.window.y,
1167                                         cmd.u.window.width, cmd.u.window.height);
1168                 break;
1169             case VOUT_CONTROL_CROP_BORDER:
1170                 ThreadExecuteCropBorder(vout,
1171                                         cmd.u.border.left,  cmd.u.border.top,
1172                                         cmd.u.border.right, cmd.u.border.bottom);
1173                 break;
1174             default:
1175                 break;
1176             }
1177             vout_control_cmd_Clean(&cmd);
1178         }
1179
1180         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1181     }
1182 }
1183