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
 116     vout_control_Init(&vout->p->control);
 117     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_INIT);
 118
 119     vout_statistic_Init(&vout->p->statistic);
 120     vout->p->i_par_num =
 121     vout->p->i_par_den = 1;
 122
 123     vout_snapshot_Init(&vout->p->snapshot);
 124
 125     /* Initialize locks */
 126     vlc_mutex_init(&vout->p->picture_lock);
 127     vlc_mutex_init(&vout->p->vfilter_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     /* Get splitter name if present */
 139     char *splitter_name = var_GetNonEmptyString(vout, "vout-filter");
 140     if (splitter_name) {
 141         if (asprintf(&vout->p->splitter_name, "%s,none", splitter_name) < 0)
 142             vout->p->splitter_name = NULL;
 143         free(splitter_name);
 144     } else {
 145         vout->p->splitter_name = NULL;
 146     }
 147
 148     /* */
 149     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 150
 151     /* */
 152     vlc_object_set_destructor(vout, VoutDestructor);
 153
 154     /* */
 155     if (vlc_clone(&vout->p->thread, Thread, vout,
 156                   VLC_THREAD_PRIORITY_OUTPUT)) {
 157         vlc_object_release(vout);
 158         return NULL;
 159     }
 160
 161     vout_control_WaitEmpty(&vout->p->control);
 162
 163     if (vout->p->dead) {
 164         msg_Err(vout, "video output creation failed");
 165         vout_CloseAndRelease(vout);
 166         return NULL;
 167     }
 168
 169     vout->p->input = cfg->input;
 170     if (vout->p->input)
 171         spu_Attach(vout->p->p_spu, vout->p->input, true);
 172
 173     return vout;
 174 }
 175
 176 vout_thread_t *(vout_Request)(vlc_object_t *object,
 177                               const vout_configuration_t *cfg)
 178 {
 179     vout_thread_t *vout = cfg->vout;
 180     if (!cfg->fmt) {
 181         if (vout)
 182             vout_CloseAndRelease(vout);
 183         return NULL;
 184     }
 185
 186     /* If a vout is provided, try reusing it */
 187     if (vout) {
 188         vlc_object_detach(vout);
 189         vlc_object_attach(vout, object);
 190
 191         if (vout->p->input != cfg->input) {
 192             if (vout->p->input)
 193                 spu_Attach(vout->p->p_spu, vout->p->input, false);
 194             vout->p->input = cfg->input;
 195             if (vout->p->input)
 196                 spu_Attach(vout->p->p_spu, vout->p->input, true);
 197         }
 198
 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         if (!vout->p->dead) {
 206             msg_Dbg(object, "reusing provided vout");
 207             return vout;
 208         }
 209         vout_CloseAndRelease(vout);
 210
 211         msg_Warn(object, "cannot reuse provided vout");
 212     }
 213     return VoutCreate(object, cfg);
 214 }
 215
 216 /*****************************************************************************
 217  * vout_Close: Close a vout created by VoutCreate.
 218  *****************************************************************************
 219  * You HAVE to call it on vout created by VoutCreate before vlc_object_release.
 220  * You should NEVER call it on vout not obtained through VoutCreate
 221  * (like with vout_Request or vlc_object_find.)
 222  * You can use vout_CloseAndRelease() as a convenience method.
 223  *****************************************************************************/
 224 void vout_Close(vout_thread_t *vout)
 225 {
 226     assert(vout);
 227
 228     if (vout->p->input)
 229         spu_Attach(vout->p->p_spu, vout->p->input, false);
 230     vlc_object_detach(vout->p->p_spu);
 231
 232     vout_snapshot_End(&vout->p->snapshot);
 233
 234     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 235     vlc_join(vout->p->thread, NULL);
 236 }
 237
 238 /* */
 239 static void VoutDestructor(vlc_object_t *object)
 240 {
 241     vout_thread_t *vout = (vout_thread_t *)object;
 242
 243     /* Make sure the vout was stopped first */
 244     //assert(!vout->p_module);
 245
 246     free(vout->p->splitter_name);
 247
 248     /* */
 249     spu_Destroy(vout->p->p_spu);
 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     spu_DisplaySubpicture(vout->p->p_spu, subpic);
 352 }
 353 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 354 {
 355     return spu_RegisterChannel(vout->p->p_spu);
 356 }
 357 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 358 {
 359     spu_ClearChannel(vout->p->p_spu, channel);
 360 }
 361
 362 /* vout_Control* are usable by anyone at anytime */
 363 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 364 {
 365     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 366                           fullscreen);
 367 }
 368 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 369 {
 370     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 371                           is_on_top);
 372 }
 373 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 374 {
 375     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 376                           is_filled);
 377 }
 378 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 379 {
 380     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 381                           num, den);
 382 }
 383 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 384                                          unsigned num, unsigned den)
 385 {
 386     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 387                           num, den);
 388 }
 389 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 390                                  unsigned num, unsigned den)
 391 {
 392     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 393                           num, den);
 394 }
 395 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 396                                   int x, int y, int width, int height)
 397 {
 398     vout_control_cmd_t cmd;
 399     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 400     cmd.u.window.x      = x;
 401     cmd.u.window.y      = y;
 402     cmd.u.window.width  = width;
 403     cmd.u.window.height = height;
 404
 405     vout_control_Push(&vout->p->control, &cmd);
 406 }
 407 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 408                                   int left, int top, int right, int bottom)
 409 {
 410     vout_control_cmd_t cmd;
 411     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 412     cmd.u.border.left   = left;
 413     cmd.u.border.top    = top;
 414     cmd.u.border.right  = right;
 415     cmd.u.border.bottom = bottom;
 416
 417     vout_control_Push(&vout->p->control, &cmd);
 418 }
 419 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 420 {
 421     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 422                             filters);
 423 }
 424 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 425 {
 426     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 427                             filters);
 428 }
 429
 430 /* */
 431 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 432 {
 433     /* Load configuration */
 434     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 435     cfg->display.title = title;
 436     const int display_width = var_CreateGetInteger(vout, "width");
 437     const int display_height = var_CreateGetInteger(vout, "height");
 438     cfg->display.width   = display_width > 0  ? display_width  : 0;
 439     cfg->display.height  = display_height > 0 ? display_height : 0;
 440     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 441     cfg->display.sar.num = 1; /* TODO monitor AR */
 442     cfg->display.sar.den = 1;
 443     unsigned zoom_den = 1000;
 444     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 445     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 446     cfg->zoom.num = zoom_num;
 447     cfg->zoom.den = zoom_den;
 448     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 449     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 450     const int align_mask = var_CreateGetInteger(vout, "align");
 451     if (align_mask & 0x1)
 452         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 453     else if (align_mask & 0x2)
 454         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 455     if (align_mask & 0x4)
 456         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 457     else if (align_mask & 0x8)
 458         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 459 }
 460
 461 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 462                                       const vout_window_cfg_t *cfg)
 463 {
 464     VLC_UNUSED(vd);
 465     vout_window_cfg_t cfg_override = *cfg;
 466
 467     if (!var_InheritBool( vout, "embedded-video"))
 468         cfg_override.is_standalone = true;
 469
 470     if (vout->p->window.is_unused && vout->p->window.object) {
 471         assert(!vout->p->splitter_name);
 472         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 473             cfg_override.type           == vout->p->window.cfg.type) {
 474             /* Reuse the stored window */
 475             msg_Dbg(vout, "Reusing previous vout window");
 476             vout_window_t *window = vout->p->window.object;
 477             if (cfg_override.width  != vout->p->window.cfg.width ||
 478                 cfg_override.height != vout->p->window.cfg.height)
 479                 vout_window_SetSize(window,
 480                                     cfg_override.width, cfg_override.height);
 481             vout->p->window.is_unused = false;
 482             vout->p->window.cfg       = cfg_override;
 483             return window;
 484         }
 485
 486         vout_window_Delete(vout->p->window.object);
 487         vout->p->window.is_unused = true;
 488         vout->p->window.object    = NULL;
 489     }
 490
 491     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), NULL,
 492                                             &cfg_override);
 493     if (!window)
 494         return NULL;
 495     if (!vout->p->splitter_name) {
 496         vout->p->window.is_unused = false;
 497         vout->p->window.cfg       = cfg_override;
 498         vout->p->window.object    = window;
 499     }
 500     return window;
 501 }
 502
 503 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 504                               vout_window_t *window)
 505 {
 506     VLC_UNUSED(vd);
 507     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 508         vout->p->window.is_unused = true;
 509     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 510         vout_window_Delete(vout->p->window.object);
 511         vout->p->window.is_unused = true;
 512         vout->p->window.object    = NULL;
 513     } else if (window) {
 514         vout_window_Delete(window);
 515     }
 516 }
 517
 518 /* */
 519 static picture_t *VoutVideoFilterNewPicture(filter_t *filter)
 520 {
 521     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 522     return picture_pool_Get(vout->p->private_pool);
 523 }
 524 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 525 {
 526     VLC_UNUSED(filter);
 527     picture_Release(picture);
 528 }
 529 static int VoutVideoFilterAllocationSetup(filter_t *filter, void *data)
 530 {
 531     filter->pf_video_buffer_new = VoutVideoFilterNewPicture;
 532     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 533     filter->p_owner             = data; /* vout */
 534     return VLC_SUCCESS;
 535 }
 536
 537 /* */
 538 static int ThreadDisplayPicture(vout_thread_t *vout,
 539                                 bool now, mtime_t *deadline)
 540 {
 541     vout_display_t *vd = vout->p->display.vd;
 542     int displayed_count = 0;
 543     int lost_count = 0;
 544
 545     for (;;) {
 546         const mtime_t date = mdate();
 547         const bool is_paused = vout->p->pause.is_on;
 548         bool redisplay = is_paused && !now && vout->p->displayed.decoded;
 549         bool is_forced;
 550
 551         /* FIXME/XXX we must redisplay the last decoded picture (because
 552          * of potential vout updated, or filters update or SPU update)
 553          * For now a high update period is needed but it coulmd be removed
 554          * if and only if:
 555          * - vout module emits events from theselves.
 556          * - *and* SPU is modified to emit an event or a deadline when needed.
 557          *
 558          * So it will be done latter.
 559          */
 560         if (!redisplay) {
 561             picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
 562             if (peek) {
 563                 is_forced = peek->b_force || is_paused || now;
 564                 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
 565                 picture_Release(peek);
 566             } else {
 567                 redisplay = true;
 568             }
 569         }
 570         if (redisplay) {
 571              /* FIXME a better way for this delay is needed */
 572             const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
 573             if (date_update > date || !vout->p->displayed.decoded) {
 574                 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
 575                 break;
 576             }
 577             /* */
 578             is_forced = true;
 579             *deadline = date - vout_chrono_GetHigh(&vout->p->render);
 580         }
 581         if (*deadline > VOUT_MWAIT_TOLERANCE)
 582             *deadline -= VOUT_MWAIT_TOLERANCE;
 583
 584         /* If we are too early and can wait, do it */
 585         if (date < *deadline && !now)
 586             break;
 587
 588         picture_t *decoded;
 589         if (redisplay) {
 590             decoded = vout->p->displayed.decoded;
 591             vout->p->displayed.decoded = NULL;
 592         } else {
 593             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 594             assert(decoded);
 595             if (!is_forced && !vout->p->is_late_dropped) {
 596                 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
 597                 const mtime_t late = predicted - decoded->date;
 598                 if (late > 0) {
 599                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 600                     if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 601                         msg_Warn(vout, "rejected picture because of render time");
 602                         /* TODO */
 603                         picture_Release(decoded);
 604                         lost_count++;
 605                         break;
 606                     }
 607                 }
 608             }
 609
 610             vout->p->displayed.is_interlaced = !decoded->b_progressive;
 611             vout->p->displayed.qtype         = decoded->i_qtype;
 612         }
 613         vout->p->displayed.timestamp = decoded->date;
 614
 615         /* */
 616         if (vout->p->displayed.decoded)
 617             picture_Release(vout->p->displayed.decoded);
 618         picture_Hold(decoded);
 619         vout->p->displayed.decoded = decoded;
 620
 621         /* */
 622         vout_chrono_Start(&vout->p->render);
 623
 624         picture_t *filtered = NULL;
 625         if (decoded) {
 626             vlc_mutex_lock(&vout->p->vfilter_lock);
 627             filtered = filter_chain_VideoFilter(vout->p->vfilter_chain, decoded);
 628             //assert(filtered == decoded); // TODO implement
 629             vlc_mutex_unlock(&vout->p->vfilter_lock);
 630             if (!filtered)
 631                 continue;
 632         }
 633
 634         /*
 635          * Check for subpictures to display
 636          */
 637         const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 638         mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 639         if (vout->p->pause.is_on)
 640             spu_render_time = vout->p->pause.date;
 641         else
 642             spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 643
 644         subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 645                                                    spu_render_time,
 646                                                    do_snapshot);
 647         /*
 648          * Perform rendering
 649          *
 650          * We have to:
 651          * - be sure to end up with a direct buffer.
 652          * - blend subtitles, and in a fast access buffer
 653          */
 654         picture_t *direct = NULL;
 655         if (filtered &&
 656             (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 657             picture_t *render;
 658             if (vout->p->is_decoder_pool_slow)
 659                 render = picture_NewFromFormat(&vd->source);
 660             else if (vout->p->decoder_pool != vout->p->display_pool)
 661                 render = picture_pool_Get(vout->p->display_pool);
 662             else
 663                 render = picture_pool_Get(vout->p->private_pool);
 664
 665             if (render) {
 666                 picture_Copy(render, filtered);
 667
 668                 spu_RenderSubpictures(vout->p->p_spu,
 669                                       render, &vd->source,
 670                                       subpic, &vd->source, spu_render_time);
 671             }
 672             if (vout->p->is_decoder_pool_slow) {
 673                 direct = picture_pool_Get(vout->p->display_pool);
 674                 if (direct)
 675                     picture_Copy(direct, render);
 676                 picture_Release(render);
 677
 678             } else {
 679                 direct = render;
 680             }
 681             picture_Release(filtered);
 682             filtered = NULL;
 683         } else {
 684             direct = filtered;
 685         }
 686
 687         /*
 688          * Take a snapshot if requested
 689          */
 690         if (direct && do_snapshot)
 691             vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
 692
 693         /* Render the direct buffer returned by vout_RenderPicture */
 694         if (direct) {
 695             vout_RenderWrapper(vout, direct);
 696
 697             vout_chrono_Stop(&vout->p->render);
 698 #if 0
 699             {
 700             static int i = 0;
 701             if (((i++)%10) == 0)
 702                 msg_Info(vout, "render: avg %d ms var %d ms",
 703                          (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 704             }
 705 #endif
 706         }
 707
 708         /* Wait the real date (for rendering jitter) */
 709         if (!is_forced)
 710             mwait(decoded->date);
 711
 712         /* Display the direct buffer returned by vout_RenderPicture */
 713         vout->p->displayed.date = mdate();
 714         if (direct)
 715             vout_DisplayWrapper(vout, direct);
 716
 717         displayed_count++;
 718         break;
 719     }
 720
 721     vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
 722     if (displayed_count <= 0)
 723         return VLC_EGENERIC;
 724     return VLC_SUCCESS;
 725 }
 726
 727 static void ThreadManage(vout_thread_t *vout,
 728                          mtime_t *deadline,
 729                          vout_interlacing_support_t *interlacing,
 730                          vout_postprocessing_support_t *postprocessing)
 731 {
 732     vlc_mutex_lock(&vout->p->picture_lock);
 733
 734     *deadline = VLC_TS_INVALID;
 735     ThreadDisplayPicture(vout, false, deadline);
 736
 737     const int  picture_qtype      = vout->p->displayed.qtype;
 738     const bool picture_interlaced = vout->p->displayed.is_interlaced;
 739
 740     vlc_mutex_unlock(&vout->p->picture_lock);
 741
 742     /* Post processing */
 743     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
 744
 745     /* Deinterlacing */
 746     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
 747
 748     vout_ManageWrapper(vout);
 749 }
 750
 751 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
 752 {
 753     if (!vout->p->title.show)
 754         return;
 755
 756     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
 757                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
 758                  string);
 759 }
 760
 761 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
 762 {
 763     es_format_t fmt;
 764     es_format_Init(&fmt, VIDEO_ES, vout->p->original.i_chroma);
 765     fmt.video = vout->p->original;
 766
 767     vlc_mutex_lock(&vout->p->vfilter_lock);
 768
 769     filter_chain_Reset(vout->p->vfilter_chain, &fmt, &fmt);
 770     if (filter_chain_AppendFromString(vout->p->vfilter_chain,
 771                                       filters) < 0)
 772         msg_Err(vout, "Video filter chain creation failed");
 773
 774     vlc_mutex_unlock(&vout->p->vfilter_lock);
 775 }
 776
 777 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
 778 {
 779     spu_ChangeFilters(vout->p->p_spu, filters);
 780 }
 781
 782 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 783 {
 784     assert(!vout->p->pause.is_on || !is_paused);
 785
 786     if (vout->p->pause.is_on) {
 787         const mtime_t duration = date - vout->p->pause.date;
 788
 789         if (vout->p->step.timestamp > VLC_TS_INVALID)
 790             vout->p->step.timestamp += duration;
 791         if (vout->p->step.last > VLC_TS_INVALID)
 792             vout->p->step.last += duration;
 793         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
 794         if (vout->p->displayed.decoded)
 795             vout->p->displayed.decoded->date += duration;
 796
 797         spu_OffsetSubtitleDate(vout->p->p_spu, duration);
 798     } else {
 799         vout->p->step.timestamp = VLC_TS_INVALID;
 800         vout->p->step.last      = VLC_TS_INVALID;
 801     }
 802     vout->p->pause.is_on = is_paused;
 803     vout->p->pause.date  = date;
 804 }
 805
 806 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
 807 {
 808     vout->p->step.timestamp = VLC_TS_INVALID;
 809     vout->p->step.last      = VLC_TS_INVALID;
 810
 811     picture_t *last = vout->p->displayed.decoded;
 812     if (last) {
 813         if (( below && last->date <= date) ||
 814             (!below && last->date >= date)) {
 815             picture_Release(last);
 816
 817             vout->p->displayed.decoded   = NULL;
 818             vout->p->displayed.date      = VLC_TS_INVALID;
 819             vout->p->displayed.timestamp = VLC_TS_INVALID;
 820         }
 821     }
 822     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
 823 }
 824
 825 static void ThreadReset(vout_thread_t *vout)
 826 {
 827     ThreadFlush(vout, true, INT64_MAX);
 828     if (vout->p->decoder_pool)
 829         picture_pool_NonEmpty(vout->p->decoder_pool, true);
 830     vout->p->pause.is_on = false;
 831     vout->p->pause.date  = mdate();
 832 }
 833
 834 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
 835 {
 836     *duration = 0;
 837
 838     if (vout->p->step.last <= VLC_TS_INVALID)
 839         vout->p->step.last = vout->p->displayed.timestamp;
 840
 841     mtime_t dummy;
 842     if (ThreadDisplayPicture(vout, true, &dummy))
 843         return;
 844
 845     vout->p->step.timestamp = vout->p->displayed.timestamp;
 846
 847     if (vout->p->step.last > VLC_TS_INVALID &&
 848         vout->p->step.timestamp > vout->p->step.last) {
 849         *duration = vout->p->step.timestamp - vout->p->step.last;
 850         vout->p->step.last = vout->p->step.timestamp;
 851         /* TODO advance subpicture by the duration ... */
 852     }
 853 }
 854
 855 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 856 {
 857     /* FIXME not sure setting "fullscreen" is good ... */
 858     var_SetBool(vout, "fullscreen", fullscreen);
 859     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
 860 }
 861
 862 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
 863 {
 864     vout_SetWindowState(vout->p->display.vd,
 865                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
 866                                     VOUT_WINDOW_STATE_NORMAL);
 867 }
 868
 869 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 870 {
 871     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
 872 }
 873
 874 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
 875 {
 876     if (num * 10 < den) {
 877         num = den;
 878         den *= 10;
 879     } else if (num > den * 10) {
 880         num = den * 10;
 881     }
 882
 883     vout_SetDisplayZoom(vout->p->display.vd, num, den);
 884 }
 885
 886 static void ThreadChangeAspectRatio(vout_thread_t *vout,
 887                                     unsigned num, unsigned den)
 888 {
 889     const video_format_t *source = &vout->p->original;
 890
 891     if (num > 0 && den > 0) {
 892         num *= source->i_visible_height;
 893         den *= source->i_visible_width;
 894         vlc_ureduce(&num, &den, num, den, 0);
 895     }
 896     vout_SetDisplayAspect(vout->p->display.vd, num, den);
 897 }
 898
 899
 900 static void ThreadExecuteCropWindow(vout_thread_t *vout,
 901                                     unsigned crop_num, unsigned crop_den,
 902                                     unsigned x, unsigned y,
 903                                     unsigned width, unsigned height)
 904 {
 905     const video_format_t *source = &vout->p->original;
 906
 907     vout_SetDisplayCrop(vout->p->display.vd,
 908                         crop_num, crop_den,
 909                         source->i_x_offset + x,
 910                         source->i_y_offset + y,
 911                         width, height);
 912 }
 913 static void ThreadExecuteCropBorder(vout_thread_t *vout,
 914                                     unsigned left, unsigned top,
 915                                     unsigned right, unsigned bottom)
 916 {
 917     const video_format_t *source = &vout->p->original;
 918     ThreadExecuteCropWindow(vout, 0, 0,
 919                             left,
 920                             top,
 921                             /* At worst, it becomes < 0 (but unsigned) and will be rejected */
 922                             source->i_visible_width  - (left + right),
 923                             source->i_visible_height - (top  + bottom));
 924 }
 925
 926 static void ThreadExecuteCropRatio(vout_thread_t *vout,
 927                                    unsigned num, unsigned den)
 928 {
 929     const video_format_t *source = &vout->p->original;
 930     ThreadExecuteCropWindow(vout, num, den,
 931                             0, 0,
 932                             source->i_visible_width,
 933                             source->i_visible_height);
 934 }
 935
 936 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
 937 {
 938     vlc_mouse_Init(&vout->p->mouse);
 939     vout->p->decoder_fifo = picture_fifo_New();
 940     vout->p->decoder_pool = NULL;
 941     vout->p->display_pool = NULL;
 942     vout->p->private_pool = NULL;
 943
 944     vout->p->vfilter_chain =
 945         filter_chain_New( vout, "video filter2", false,
 946                           VoutVideoFilterAllocationSetup, NULL, vout);
 947
 948     vout_display_state_t state_default;
 949     if (!state) {
 950         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
 951         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
 952                                                                            VOUT_WINDOW_STATE_NORMAL;
 953         state_default.sar.num = 0;
 954         state_default.sar.den = 0;
 955
 956         state = &state_default;
 957     }
 958
 959     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
 960         return VLC_EGENERIC;
 961     if (vout_InitWrapper(vout))
 962         return VLC_EGENERIC;
 963     assert(vout->p->decoder_pool);
 964
 965     vout->p->displayed.decoded       = NULL;
 966     vout->p->displayed.date          = VLC_TS_INVALID;
 967     vout->p->displayed.decoded       = NULL;
 968     vout->p->displayed.timestamp     = VLC_TS_INVALID;
 969     vout->p->displayed.qtype         = QTYPE_NONE;
 970     vout->p->displayed.is_interlaced = false;
 971
 972     vout->p->step.last               = VLC_TS_INVALID;
 973     vout->p->step.timestamp          = VLC_TS_INVALID;
 974
 975     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
 976     return VLC_SUCCESS;
 977 }
 978
 979 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
 980 {
 981     /* Destroy the video filters2 */
 982     filter_chain_Delete(vout->p->vfilter_chain);
 983
 984     /* Destroy translation tables */
 985     if (vout->p->display.vd) {
 986         if (vout->p->decoder_pool) {
 987             ThreadFlush(vout, true, INT64_MAX);
 988             vout_EndWrapper(vout);
 989         }
 990         vout_CloseWrapper(vout, state);
 991     }
 992
 993     if (vout->p->decoder_fifo)
 994         picture_fifo_Delete(vout->p->decoder_fifo);
 995     assert(!vout->p->decoder_pool);
 996 }
 997
 998 static void ThreadInit(vout_thread_t *vout)
 999 {
1000     vout->p->window.is_unused = true;
1001     vout->p->window.object    = NULL;
1002     vout->p->dead             = false;
1003     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1004     vout->p->pause.is_on      = false;
1005     vout->p->pause.date       = VLC_TS_INVALID;
1006
1007     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1008 }
1009
1010 static void ThreadClean(vout_thread_t *vout)
1011 {
1012     if (vout->p->window.object) {
1013         assert(vout->p->window.is_unused);
1014         vout_window_Delete(vout->p->window.object);
1015     }
1016     vout_chrono_Clean(&vout->p->render);
1017     vout->p->dead = true;
1018     vout_control_Dead(&vout->p->control);
1019 }
1020
1021 static int ThreadReinit(vout_thread_t *vout,
1022                         const vout_configuration_t *cfg)
1023 {
1024     video_format_t original;
1025     if (VoutValidateFormat(&original, cfg->fmt)) {
1026         ThreadStop(vout, NULL);
1027         ThreadClean(vout);
1028         return VLC_EGENERIC;
1029     }
1030     if (video_format_IsSimilar(&original, &vout->p->original))
1031         return VLC_SUCCESS;
1032
1033     vout_display_state_t state;
1034     memset(&state, 0, sizeof(state));
1035
1036     ThreadStop(vout, &state);
1037
1038     if (!state.cfg.is_fullscreen) {
1039         state.cfg.display.width  = 0;
1040         state.cfg.display.height = 0;
1041     }
1042     state.sar.num = 0;
1043     state.sar.den = 0;
1044     /* FIXME current vout "variables" are not in sync here anymore
1045      * and I am not sure what to do */
1046
1047     vout->p->original = original;
1048     if (ThreadStart(vout, &state)) {
1049         ThreadClean(vout);
1050         return VLC_EGENERIC;
1051     }
1052     return VLC_SUCCESS;
1053 }
1054
1055 /*****************************************************************************
1056  * Thread: video output thread
1057  *****************************************************************************
1058  * Video output thread. This function does only returns when the thread is
1059  * terminated. It handles the pictures arriving in the video heap and the
1060  * display device events.
1061  *****************************************************************************/
1062 static void *Thread(void *object)
1063 {
1064     vout_thread_t *vout = object;
1065
1066     vout_interlacing_support_t interlacing = {
1067         .is_interlaced = false,
1068         .date = mdate(),
1069     };
1070     vout_postprocessing_support_t postprocessing = {
1071         .qtype = QTYPE_NONE,
1072     };
1073
1074     mtime_t deadline = VLC_TS_INVALID;
1075     for (;;) {
1076         vout_control_cmd_t cmd;
1077
1078         /* FIXME remove thoses ugly timeouts
1079          */
1080         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1081             switch(cmd.type) {
1082             case VOUT_CONTROL_INIT:
1083                 ThreadInit(vout);
1084                 if (ThreadStart(vout, NULL)) {
1085                     ThreadStop(vout, NULL);
1086                     ThreadClean(vout);
1087                     return NULL;
1088                 }
1089                 break;
1090             case VOUT_CONTROL_CLEAN:
1091                 ThreadStop(vout, NULL);
1092                 ThreadClean(vout);
1093                 return NULL;
1094             case VOUT_CONTROL_REINIT:
1095                 if (ThreadReinit(vout, cmd.u.cfg))
1096                     return NULL;
1097                 break;
1098             case VOUT_CONTROL_OSD_TITLE:
1099                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1100                 break;
1101             case VOUT_CONTROL_CHANGE_FILTERS:
1102                 ThreadChangeFilters(vout, cmd.u.string);
1103                 break;
1104             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1105                 ThreadChangeSubFilters(vout, cmd.u.string);
1106                 break;
1107             case VOUT_CONTROL_PAUSE:
1108                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1109                 break;
1110             case VOUT_CONTROL_FLUSH:
1111                 ThreadFlush(vout, false, cmd.u.time);
1112                 break;
1113             case VOUT_CONTROL_RESET:
1114                 ThreadReset(vout);
1115                 break;
1116             case VOUT_CONTROL_STEP:
1117                 ThreadStep(vout, cmd.u.time_ptr);
1118                 break;
1119             case VOUT_CONTROL_FULLSCREEN:
1120                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1121                 break;
1122             case VOUT_CONTROL_ON_TOP:
1123                 ThreadChangeOnTop(vout, cmd.u.boolean);
1124                 break;
1125             case VOUT_CONTROL_DISPLAY_FILLED:
1126                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1127                 break;
1128             case VOUT_CONTROL_ZOOM:
1129                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1130                 break;
1131             case VOUT_CONTROL_ASPECT_RATIO:
1132                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1133                 break;
1134            case VOUT_CONTROL_CROP_RATIO:
1135                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1136                 break;
1137             case VOUT_CONTROL_CROP_WINDOW:
1138                 ThreadExecuteCropWindow(vout, 0, 0,
1139                                         cmd.u.window.x, cmd.u.window.y,
1140                                         cmd.u.window.width, cmd.u.window.height);
1141                 break;
1142             case VOUT_CONTROL_CROP_BORDER:
1143                 ThreadExecuteCropBorder(vout,
1144                                         cmd.u.border.left,  cmd.u.border.top,
1145                                         cmd.u.border.right, cmd.u.border.bottom);
1146                 break;
1147             default:
1148                 break;
1149             }
1150             vout_control_cmd_Clean(&cmd);
1151         }
1152
1153         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1154     }
1155 }
1156