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     vlc_mutex_init(&vout->p->spu_lock);
 130
 131     /* Attach the new object now so we can use var inheritance below */
 132     vlc_object_attach(vout, object);
 133
 134     /* Initialize subpicture unit */
 135     vout->p->p_spu = spu_Create(vout);
 136
 137     /* Take care of some "interface/control" related initialisations */
 138     vout_IntfInit(vout);
 139
 140     /* Get splitter name if present */
 141     char *splitter_name = var_GetNonEmptyString(vout, "vout-filter");
 142     if (splitter_name) {
 143         if (asprintf(&vout->p->splitter_name, "%s,none", splitter_name) < 0)
 144             vout->p->splitter_name = NULL;
 145         free(splitter_name);
 146     } else {
 147         vout->p->splitter_name = NULL;
 148     }
 149
 150     /* */
 151     vout_InitInterlacingSupport(vout, vout->p->displayed.is_interlaced);
 152
 153     /* */
 154     vlc_object_set_destructor(vout, VoutDestructor);
 155
 156     /* */
 157     if (vlc_clone(&vout->p->thread, Thread, vout,
 158                   VLC_THREAD_PRIORITY_OUTPUT)) {
 159         spu_Destroy(vout->p->p_spu);
 160         vlc_object_release(vout);
 161         return NULL;
 162     }
 163
 164     vout_control_WaitEmpty(&vout->p->control);
 165
 166     if (vout->p->dead) {
 167         msg_Err(vout, "video output creation failed");
 168         vout_CloseAndRelease(vout);
 169         return NULL;
 170     }
 171
 172     vout->p->input = cfg->input;
 173     if (vout->p->input)
 174         spu_Attach(vout->p->p_spu, vout->p->input, true);
 175
 176     return vout;
 177 }
 178
 179 vout_thread_t *(vout_Request)(vlc_object_t *object,
 180                               const vout_configuration_t *cfg)
 181 {
 182     vout_thread_t *vout = cfg->vout;
 183     if (cfg->change_fmt && !cfg->fmt) {
 184         if (vout)
 185             vout_CloseAndRelease(vout);
 186         return NULL;
 187     }
 188
 189     /* If a vout is provided, try reusing it */
 190     if (vout) {
 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         if (cfg->change_fmt) {
 200             vout_control_cmd_t cmd;
 201             vout_control_cmd_Init(&cmd, VOUT_CONTROL_REINIT);
 202             cmd.u.cfg = cfg;
 203
 204             vout_control_Push(&vout->p->control, &cmd);
 205             vout_control_WaitEmpty(&vout->p->control);
 206         }
 207
 208         if (!vout->p->dead) {
 209             msg_Dbg(object, "reusing provided vout");
 210             return vout;
 211         }
 212         vout_CloseAndRelease(vout);
 213
 214         msg_Warn(object, "cannot reuse provided vout");
 215     }
 216     return VoutCreate(object, cfg);
 217 }
 218
 219 void vout_Close(vout_thread_t *vout)
 220 {
 221     assert(vout);
 222
 223     if (vout->p->input)
 224         spu_Attach(vout->p->p_spu, vout->p->input, false);
 225
 226     vout_snapshot_End(&vout->p->snapshot);
 227
 228     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_CLEAN);
 229     vlc_join(vout->p->thread, NULL);
 230
 231     vlc_mutex_lock(&vout->p->spu_lock);
 232     spu_Destroy(vout->p->p_spu);
 233     vout->p->p_spu = NULL;
 234     vlc_mutex_unlock(&vout->p->spu_lock);
 235 }
 236
 237 /* */
 238 static void VoutDestructor(vlc_object_t *object)
 239 {
 240     vout_thread_t *vout = (vout_thread_t *)object;
 241
 242     /* Make sure the vout was stopped first */
 243     //assert(!vout->p_module);
 244
 245     free(vout->p->splitter_name);
 246
 247     /* Destroy the locks */
 248     vlc_mutex_destroy(&vout->p->spu_lock);
 249     vlc_mutex_destroy(&vout->p->picture_lock);
 250     vlc_mutex_destroy(&vout->p->vfilter_lock);
 251     vout_control_Clean(&vout->p->control);
 252
 253     /* */
 254     vout_statistic_Clean(&vout->p->statistic);
 255
 256     /* */
 257     vout_snapshot_Clean(&vout->p->snapshot);
 258
 259     video_format_Clean(&vout->p->original);
 260 }
 261
 262 /* */
 263 void vout_ChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 264 {
 265     vout_control_cmd_t cmd;
 266     vout_control_cmd_Init(&cmd, VOUT_CONTROL_PAUSE);
 267     cmd.u.pause.is_on = is_paused;
 268     cmd.u.pause.date  = date;
 269     vout_control_Push(&vout->p->control, &cmd);
 270
 271     vout_control_WaitEmpty(&vout->p->control);
 272 }
 273
 274 void vout_GetResetStatistic(vout_thread_t *vout, int *displayed, int *lost)
 275 {
 276     vout_statistic_GetReset( &vout->p->statistic, displayed, lost );
 277 }
 278
 279 void vout_Flush(vout_thread_t *vout, mtime_t date)
 280 {
 281     vout_control_PushTime(&vout->p->control, VOUT_CONTROL_FLUSH, date);
 282     vout_control_WaitEmpty(&vout->p->control);
 283 }
 284
 285 void vout_Reset(vout_thread_t *vout)
 286 {
 287     vout_control_PushVoid(&vout->p->control, VOUT_CONTROL_RESET);
 288     vout_control_WaitEmpty(&vout->p->control);
 289 }
 290
 291 bool vout_IsEmpty(vout_thread_t *vout)
 292 {
 293     vlc_mutex_lock(&vout->p->picture_lock);
 294
 295     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 296     if (picture)
 297         picture_Release(picture);
 298
 299     vlc_mutex_unlock(&vout->p->picture_lock);
 300
 301     return !picture;
 302 }
 303
 304 void vout_FixLeaks( vout_thread_t *vout )
 305 {
 306     vlc_mutex_lock(&vout->p->picture_lock);
 307
 308     picture_t *picture = picture_fifo_Peek(vout->p->decoder_fifo);
 309     if (!picture) {
 310         picture = picture_pool_Get(vout->p->decoder_pool);
 311     }
 312
 313     if (picture) {
 314         picture_Release(picture);
 315         /* Not all pictures has been displayed yet or some are
 316          * free */
 317         vlc_mutex_unlock(&vout->p->picture_lock);
 318         return;
 319     }
 320
 321     /* There is no reason that no pictures are available, force one
 322      * from the pool, becarefull with it though */
 323     msg_Err(vout, "pictures leaked, trying to workaround");
 324
 325     /* */
 326     picture_pool_NonEmpty(vout->p->decoder_pool, false);
 327
 328     vlc_mutex_unlock(&vout->p->picture_lock);
 329 }
 330 void vout_NextPicture(vout_thread_t *vout, mtime_t *duration)
 331 {
 332     vout_control_cmd_t cmd;
 333     vout_control_cmd_Init(&cmd, VOUT_CONTROL_STEP);
 334     cmd.u.time_ptr = duration;
 335
 336     vout_control_Push(&vout->p->control, &cmd);
 337     vout_control_WaitEmpty(&vout->p->control);
 338 }
 339
 340 void vout_DisplayTitle(vout_thread_t *vout, const char *title)
 341 {
 342     assert(title);
 343     vout_control_PushString(&vout->p->control, VOUT_CONTROL_OSD_TITLE, title);
 344 }
 345
 346 void vout_PutSubpicture( vout_thread_t *vout, subpicture_t *subpic )
 347 {
 348     vout_control_cmd_t cmd;
 349     vout_control_cmd_Init(&cmd, VOUT_CONTROL_SUBPICTURE);
 350     cmd.u.subpicture = subpic;
 351
 352     vout_control_Push(&vout->p->control, &cmd);
 353 }
 354 int vout_RegisterSubpictureChannel( vout_thread_t *vout )
 355 {
 356     int channel = SPU_DEFAULT_CHANNEL;
 357
 358     vlc_mutex_lock(&vout->p->spu_lock);
 359     if (vout->p->p_spu)
 360         channel = spu_RegisterChannel(vout->p->p_spu);
 361     vlc_mutex_unlock(&vout->p->spu_lock);
 362
 363     return channel;
 364 }
 365 void vout_FlushSubpictureChannel( vout_thread_t *vout, int channel )
 366 {
 367     vout_control_PushInteger(&vout->p->control, VOUT_CONTROL_FLUSH_SUBPICTURE,
 368                              channel);
 369 }
 370
 371 /* vout_Control* are usable by anyone at anytime */
 372 void vout_ControlChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 373 {
 374     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_FULLSCREEN,
 375                           fullscreen);
 376 }
 377 void vout_ControlChangeOnTop(vout_thread_t *vout, bool is_on_top)
 378 {
 379     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_ON_TOP,
 380                           is_on_top);
 381 }
 382 void vout_ControlChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 383 {
 384     vout_control_PushBool(&vout->p->control, VOUT_CONTROL_DISPLAY_FILLED,
 385                           is_filled);
 386 }
 387 void vout_ControlChangeZoom(vout_thread_t *vout, int num, int den)
 388 {
 389     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ZOOM,
 390                           num, den);
 391 }
 392 void vout_ControlChangeSampleAspectRatio(vout_thread_t *vout,
 393                                          unsigned num, unsigned den)
 394 {
 395     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_ASPECT_RATIO,
 396                           num, den);
 397 }
 398 void vout_ControlChangeCropRatio(vout_thread_t *vout,
 399                                  unsigned num, unsigned den)
 400 {
 401     vout_control_PushPair(&vout->p->control, VOUT_CONTROL_CROP_RATIO,
 402                           num, den);
 403 }
 404 void vout_ControlChangeCropWindow(vout_thread_t *vout,
 405                                   int x, int y, int width, int height)
 406 {
 407     vout_control_cmd_t cmd;
 408     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_WINDOW);
 409     cmd.u.window.x      = x;
 410     cmd.u.window.y      = y;
 411     cmd.u.window.width  = width;
 412     cmd.u.window.height = height;
 413
 414     vout_control_Push(&vout->p->control, &cmd);
 415 }
 416 void vout_ControlChangeCropBorder(vout_thread_t *vout,
 417                                   int left, int top, int right, int bottom)
 418 {
 419     vout_control_cmd_t cmd;
 420     vout_control_cmd_Init(&cmd, VOUT_CONTROL_CROP_BORDER);
 421     cmd.u.border.left   = left;
 422     cmd.u.border.top    = top;
 423     cmd.u.border.right  = right;
 424     cmd.u.border.bottom = bottom;
 425
 426     vout_control_Push(&vout->p->control, &cmd);
 427 }
 428 void vout_ControlChangeFilters(vout_thread_t *vout, const char *filters)
 429 {
 430     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_FILTERS,
 431                             filters);
 432 }
 433 void vout_ControlChangeSubFilters(vout_thread_t *vout, const char *filters)
 434 {
 435     vout_control_PushString(&vout->p->control, VOUT_CONTROL_CHANGE_SUB_FILTERS,
 436                             filters);
 437 }
 438
 439 /* */
 440 static void VoutGetDisplayCfg(vout_thread_t *vout, vout_display_cfg_t *cfg, const char *title)
 441 {
 442     /* Load configuration */
 443     cfg->is_fullscreen = var_CreateGetBool(vout, "fullscreen");
 444     cfg->display.title = title;
 445     const int display_width = var_CreateGetInteger(vout, "width");
 446     const int display_height = var_CreateGetInteger(vout, "height");
 447     cfg->display.width   = display_width > 0  ? display_width  : 0;
 448     cfg->display.height  = display_height > 0 ? display_height : 0;
 449     cfg->is_display_filled  = var_CreateGetBool(vout, "autoscale");
 450     cfg->display.sar.num = 1; /* TODO monitor AR */
 451     cfg->display.sar.den = 1;
 452     unsigned zoom_den = 1000;
 453     unsigned zoom_num = zoom_den * var_CreateGetFloat(vout, "scale");
 454     vlc_ureduce(&zoom_num, &zoom_den, zoom_num, zoom_den, 0);
 455     cfg->zoom.num = zoom_num;
 456     cfg->zoom.den = zoom_den;
 457     cfg->align.vertical = VOUT_DISPLAY_ALIGN_CENTER;
 458     cfg->align.horizontal = VOUT_DISPLAY_ALIGN_CENTER;
 459     const int align_mask = var_CreateGetInteger(vout, "align");
 460     if (align_mask & 0x1)
 461         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_LEFT;
 462     else if (align_mask & 0x2)
 463         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_RIGHT;
 464     if (align_mask & 0x4)
 465         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_TOP;
 466     else if (align_mask & 0x8)
 467         cfg->align.horizontal = VOUT_DISPLAY_ALIGN_BOTTOM;
 468 }
 469
 470 vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 471                                       const vout_window_cfg_t *cfg)
 472 {
 473     VLC_UNUSED(vd);
 474     vout_window_cfg_t cfg_override = *cfg;
 475
 476     if (!var_InheritBool( vout, "embedded-video"))
 477         cfg_override.is_standalone = true;
 478
 479     if (vout->p->window.is_unused && vout->p->window.object) {
 480         assert(!vout->p->splitter_name);
 481         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
 482             cfg_override.type           == vout->p->window.cfg.type) {
 483             /* Reuse the stored window */
 484             msg_Dbg(vout, "Reusing previous vout window");
 485             vout_window_t *window = vout->p->window.object;
 486             if (cfg_override.width  != vout->p->window.cfg.width ||
 487                 cfg_override.height != vout->p->window.cfg.height)
 488                 vout_window_SetSize(window,
 489                                     cfg_override.width, cfg_override.height);
 490             vout->p->window.is_unused = false;
 491             vout->p->window.cfg       = cfg_override;
 492             return window;
 493         }
 494
 495         vout_window_Delete(vout->p->window.object);
 496         vout->p->window.is_unused = true;
 497         vout->p->window.object    = NULL;
 498     }
 499
 500     vout_window_t *window = vout_window_New(VLC_OBJECT(vout), NULL,
 501                                             &cfg_override);
 502     if (!window)
 503         return NULL;
 504     if (!vout->p->splitter_name) {
 505         vout->p->window.is_unused = false;
 506         vout->p->window.cfg       = cfg_override;
 507         vout->p->window.object    = window;
 508     }
 509     return window;
 510 }
 511
 512 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd,
 513                               vout_window_t *window)
 514 {
 515     VLC_UNUSED(vd);
 516     if (!vout->p->window.is_unused && vout->p->window.object == window) {
 517         vout->p->window.is_unused = true;
 518     } else if (vout->p->window.is_unused && vout->p->window.object && !window) {
 519         vout_window_Delete(vout->p->window.object);
 520         vout->p->window.is_unused = true;
 521         vout->p->window.object    = NULL;
 522     } else if (window) {
 523         vout_window_Delete(window);
 524     }
 525 }
 526
 527 /* */
 528 static picture_t *VoutVideoFilterNewPicture(filter_t *filter)
 529 {
 530     vout_thread_t *vout = (vout_thread_t*)filter->p_owner;
 531     return picture_pool_Get(vout->p->private_pool);
 532 }
 533 static void VoutVideoFilterDelPicture(filter_t *filter, picture_t *picture)
 534 {
 535     VLC_UNUSED(filter);
 536     picture_Release(picture);
 537 }
 538 static int VoutVideoFilterAllocationSetup(filter_t *filter, void *data)
 539 {
 540     filter->pf_video_buffer_new = VoutVideoFilterNewPicture;
 541     filter->pf_video_buffer_del = VoutVideoFilterDelPicture;
 542     filter->p_owner             = data; /* vout */
 543     return VLC_SUCCESS;
 544 }
 545
 546 /* */
 547 static int ThreadDisplayPicture(vout_thread_t *vout,
 548                                 bool now, mtime_t *deadline)
 549 {
 550     vout_display_t *vd = vout->p->display.vd;
 551     int displayed_count = 0;
 552     int lost_count = 0;
 553
 554     for (;;) {
 555         const mtime_t date = mdate();
 556         const bool is_paused = vout->p->pause.is_on;
 557         bool redisplay = is_paused && !now && vout->p->displayed.decoded;
 558         bool is_forced;
 559
 560         /* FIXME/XXX we must redisplay the last decoded picture (because
 561          * of potential vout updated, or filters update or SPU update)
 562          * For now a high update period is needed but it coulmd be removed
 563          * if and only if:
 564          * - vout module emits events from theselves.
 565          * - *and* SPU is modified to emit an event or a deadline when needed.
 566          *
 567          * So it will be done latter.
 568          */
 569         if (!redisplay) {
 570             picture_t *peek = picture_fifo_Peek(vout->p->decoder_fifo);
 571             if (peek) {
 572                 is_forced = peek->b_force || is_paused || now;
 573                 *deadline = (is_forced ? date : peek->date) - vout_chrono_GetHigh(&vout->p->render);
 574                 picture_Release(peek);
 575             } else {
 576                 redisplay = true;
 577             }
 578         }
 579         if (redisplay) {
 580              /* FIXME a better way for this delay is needed */
 581             const mtime_t date_update = vout->p->displayed.date + VOUT_REDISPLAY_DELAY;
 582             if (date_update > date || !vout->p->displayed.decoded) {
 583                 *deadline = vout->p->displayed.decoded ? date_update : VLC_TS_INVALID;
 584                 break;
 585             }
 586             /* */
 587             is_forced = true;
 588             *deadline = date - vout_chrono_GetHigh(&vout->p->render);
 589         }
 590         if (*deadline > VOUT_MWAIT_TOLERANCE)
 591             *deadline -= VOUT_MWAIT_TOLERANCE;
 592
 593         /* If we are too early and can wait, do it */
 594         if (date < *deadline && !now)
 595             break;
 596
 597         picture_t *decoded;
 598         if (redisplay) {
 599             decoded = vout->p->displayed.decoded;
 600             vout->p->displayed.decoded = NULL;
 601         } else {
 602             decoded = picture_fifo_Pop(vout->p->decoder_fifo);
 603             assert(decoded);
 604             if (!is_forced && !vout->p->is_late_dropped) {
 605                 const mtime_t predicted = date + vout_chrono_GetLow(&vout->p->render);
 606                 const mtime_t late = predicted - decoded->date;
 607                 if (late > 0) {
 608                     msg_Dbg(vout, "picture might be displayed late (missing %d ms)", (int)(late/1000));
 609                     if (late > VOUT_DISPLAY_LATE_THRESHOLD) {
 610                         msg_Warn(vout, "rejected picture because of render time");
 611                         /* TODO */
 612                         picture_Release(decoded);
 613                         lost_count++;
 614                         break;
 615                     }
 616                 }
 617             }
 618
 619             vout->p->displayed.is_interlaced = !decoded->b_progressive;
 620             vout->p->displayed.qtype         = decoded->i_qtype;
 621         }
 622         vout->p->displayed.timestamp = decoded->date;
 623
 624         /* */
 625         if (vout->p->displayed.decoded)
 626             picture_Release(vout->p->displayed.decoded);
 627         picture_Hold(decoded);
 628         vout->p->displayed.decoded = decoded;
 629
 630         /* */
 631         vout_chrono_Start(&vout->p->render);
 632
 633         picture_t *filtered = NULL;
 634         if (decoded) {
 635             vlc_mutex_lock(&vout->p->vfilter_lock);
 636             filtered = filter_chain_VideoFilter(vout->p->vfilter_chain, decoded);
 637             //assert(filtered == decoded); // TODO implement
 638             vlc_mutex_unlock(&vout->p->vfilter_lock);
 639             if (!filtered)
 640                 continue;
 641         }
 642
 643         /*
 644          * Check for subpictures to display
 645          */
 646         const bool do_snapshot = vout_snapshot_IsRequested(&vout->p->snapshot);
 647         mtime_t spu_render_time = is_forced ? mdate() : filtered->date;
 648         if (vout->p->pause.is_on)
 649             spu_render_time = vout->p->pause.date;
 650         else
 651             spu_render_time = filtered->date > 1 ? filtered->date : mdate();
 652
 653         subpicture_t *subpic = spu_SortSubpictures(vout->p->p_spu,
 654                                                    spu_render_time,
 655                                                    do_snapshot);
 656         /*
 657          * Perform rendering
 658          *
 659          * We have to:
 660          * - be sure to end up with a direct buffer.
 661          * - blend subtitles, and in a fast access buffer
 662          */
 663         picture_t *direct = NULL;
 664         if (filtered &&
 665             (vout->p->decoder_pool != vout->p->display_pool || subpic)) {
 666             picture_t *render;
 667             if (vout->p->is_decoder_pool_slow)
 668                 render = picture_NewFromFormat(&vd->source);
 669             else if (vout->p->decoder_pool != vout->p->display_pool)
 670                 render = picture_pool_Get(vout->p->display_pool);
 671             else
 672                 render = picture_pool_Get(vout->p->private_pool);
 673
 674             if (render) {
 675                 picture_Copy(render, filtered);
 676
 677                 spu_RenderSubpictures(vout->p->p_spu,
 678                                       render, &vd->source,
 679                                       subpic, &vd->source, spu_render_time);
 680             }
 681             if (vout->p->is_decoder_pool_slow) {
 682                 direct = picture_pool_Get(vout->p->display_pool);
 683                 if (direct)
 684                     picture_Copy(direct, render);
 685                 picture_Release(render);
 686
 687             } else {
 688                 direct = render;
 689             }
 690             picture_Release(filtered);
 691             filtered = NULL;
 692         } else {
 693             direct = filtered;
 694         }
 695
 696         /*
 697          * Take a snapshot if requested
 698          */
 699         if (direct && do_snapshot)
 700             vout_snapshot_Set(&vout->p->snapshot, &vd->source, direct);
 701
 702         /* Render the direct buffer returned by vout_RenderPicture */
 703         if (direct) {
 704             vout_RenderWrapper(vout, direct);
 705
 706             vout_chrono_Stop(&vout->p->render);
 707 #if 0
 708             {
 709             static int i = 0;
 710             if (((i++)%10) == 0)
 711                 msg_Info(vout, "render: avg %d ms var %d ms",
 712                          (int)(vout->p->render.avg/1000), (int)(vout->p->render.var/1000));
 713             }
 714 #endif
 715         }
 716
 717         /* Wait the real date (for rendering jitter) */
 718         if (!is_forced)
 719             mwait(decoded->date);
 720
 721         /* Display the direct buffer returned by vout_RenderPicture */
 722         vout->p->displayed.date = mdate();
 723         if (direct)
 724             vout_DisplayWrapper(vout, direct);
 725
 726         displayed_count++;
 727         break;
 728     }
 729
 730     vout_statistic_Update(&vout->p->statistic, displayed_count, lost_count);
 731     if (displayed_count <= 0)
 732         return VLC_EGENERIC;
 733     return VLC_SUCCESS;
 734 }
 735
 736 static void ThreadManage(vout_thread_t *vout,
 737                          mtime_t *deadline,
 738                          vout_interlacing_support_t *interlacing,
 739                          vout_postprocessing_support_t *postprocessing)
 740 {
 741     vlc_mutex_lock(&vout->p->picture_lock);
 742
 743     *deadline = VLC_TS_INVALID;
 744     ThreadDisplayPicture(vout, false, deadline);
 745
 746     const int  picture_qtype      = vout->p->displayed.qtype;
 747     const bool picture_interlaced = vout->p->displayed.is_interlaced;
 748
 749     vlc_mutex_unlock(&vout->p->picture_lock);
 750
 751     /* Post processing */
 752     vout_SetPostProcessingState(vout, postprocessing, picture_qtype);
 753
 754     /* Deinterlacing */
 755     vout_SetInterlacingState(vout, interlacing, picture_interlaced);
 756
 757     vout_ManageWrapper(vout);
 758 }
 759
 760 static void ThreadDisplaySubpicture(vout_thread_t *vout,
 761                                     subpicture_t *subpicture)
 762 {
 763     spu_DisplaySubpicture(vout->p->p_spu, subpicture);
 764 }
 765
 766 static void ThreadFlushSubpicture(vout_thread_t *vout, int channel)
 767 {
 768     spu_ClearChannel(vout->p->p_spu, channel);
 769 }
 770
 771 static void ThreadDisplayOsdTitle(vout_thread_t *vout, const char *string)
 772 {
 773     if (!vout->p->title.show)
 774         return;
 775
 776     vout_OSDText(vout, SPU_DEFAULT_CHANNEL,
 777                  vout->p->title.position, INT64_C(1000) * vout->p->title.timeout,
 778                  string);
 779 }
 780
 781 static void ThreadChangeFilters(vout_thread_t *vout, const char *filters)
 782 {
 783     es_format_t fmt;
 784     es_format_Init(&fmt, VIDEO_ES, vout->p->original.i_chroma);
 785     fmt.video = vout->p->original;
 786
 787     vlc_mutex_lock(&vout->p->vfilter_lock);
 788
 789     filter_chain_Reset(vout->p->vfilter_chain, &fmt, &fmt);
 790     if (filter_chain_AppendFromString(vout->p->vfilter_chain,
 791                                       filters) < 0)
 792         msg_Err(vout, "Video filter chain creation failed");
 793
 794     vlc_mutex_unlock(&vout->p->vfilter_lock);
 795 }
 796
 797 static void ThreadChangeSubFilters(vout_thread_t *vout, const char *filters)
 798 {
 799     spu_ChangeFilters(vout->p->p_spu, filters);
 800 }
 801
 802 static void ThreadChangePause(vout_thread_t *vout, bool is_paused, mtime_t date)
 803 {
 804     assert(!vout->p->pause.is_on || !is_paused);
 805
 806     if (vout->p->pause.is_on) {
 807         const mtime_t duration = date - vout->p->pause.date;
 808
 809         if (vout->p->step.timestamp > VLC_TS_INVALID)
 810             vout->p->step.timestamp += duration;
 811         if (vout->p->step.last > VLC_TS_INVALID)
 812             vout->p->step.last += duration;
 813         picture_fifo_OffsetDate(vout->p->decoder_fifo, duration);
 814         if (vout->p->displayed.decoded)
 815             vout->p->displayed.decoded->date += duration;
 816
 817         spu_OffsetSubtitleDate(vout->p->p_spu, duration);
 818     } else {
 819         vout->p->step.timestamp = VLC_TS_INVALID;
 820         vout->p->step.last      = VLC_TS_INVALID;
 821     }
 822     vout->p->pause.is_on = is_paused;
 823     vout->p->pause.date  = date;
 824 }
 825
 826 static void ThreadFlush(vout_thread_t *vout, bool below, mtime_t date)
 827 {
 828     vout->p->step.timestamp = VLC_TS_INVALID;
 829     vout->p->step.last      = VLC_TS_INVALID;
 830
 831     picture_t *last = vout->p->displayed.decoded;
 832     if (last) {
 833         if (( below && last->date <= date) ||
 834             (!below && last->date >= date)) {
 835             picture_Release(last);
 836
 837             vout->p->displayed.decoded   = NULL;
 838             vout->p->displayed.date      = VLC_TS_INVALID;
 839             vout->p->displayed.timestamp = VLC_TS_INVALID;
 840         }
 841     }
 842     picture_fifo_Flush(vout->p->decoder_fifo, date, below);
 843 }
 844
 845 static void ThreadReset(vout_thread_t *vout)
 846 {
 847     ThreadFlush(vout, true, INT64_MAX);
 848     if (vout->p->decoder_pool)
 849         picture_pool_NonEmpty(vout->p->decoder_pool, true);
 850     vout->p->pause.is_on = false;
 851     vout->p->pause.date  = mdate();
 852 }
 853
 854 static void ThreadStep(vout_thread_t *vout, mtime_t *duration)
 855 {
 856     *duration = 0;
 857
 858     if (vout->p->step.last <= VLC_TS_INVALID)
 859         vout->p->step.last = vout->p->displayed.timestamp;
 860
 861     mtime_t dummy;
 862     if (ThreadDisplayPicture(vout, true, &dummy))
 863         return;
 864
 865     vout->p->step.timestamp = vout->p->displayed.timestamp;
 866
 867     if (vout->p->step.last > VLC_TS_INVALID &&
 868         vout->p->step.timestamp > vout->p->step.last) {
 869         *duration = vout->p->step.timestamp - vout->p->step.last;
 870         vout->p->step.last = vout->p->step.timestamp;
 871         /* TODO advance subpicture by the duration ... */
 872     }
 873 }
 874
 875 static void ThreadChangeFullscreen(vout_thread_t *vout, bool fullscreen)
 876 {
 877     /* FIXME not sure setting "fullscreen" is good ... */
 878     var_SetBool(vout, "fullscreen", fullscreen);
 879     vout_SetDisplayFullscreen(vout->p->display.vd, fullscreen);
 880 }
 881
 882 static void ThreadChangeOnTop(vout_thread_t *vout, bool is_on_top)
 883 {
 884     vout_SetWindowState(vout->p->display.vd,
 885                         is_on_top ? VOUT_WINDOW_STATE_ABOVE :
 886                                     VOUT_WINDOW_STATE_NORMAL);
 887 }
 888
 889 static void ThreadChangeDisplayFilled(vout_thread_t *vout, bool is_filled)
 890 {
 891     vout_SetDisplayFilled(vout->p->display.vd, is_filled);
 892 }
 893
 894 static void ThreadChangeZoom(vout_thread_t *vout, int num, int den)
 895 {
 896     if (num * 10 < den) {
 897         num = den;
 898         den *= 10;
 899     } else if (num > den * 10) {
 900         num = den * 10;
 901     }
 902
 903     vout_SetDisplayZoom(vout->p->display.vd, num, den);
 904 }
 905
 906 static void ThreadChangeAspectRatio(vout_thread_t *vout,
 907                                     unsigned num, unsigned den)
 908 {
 909     const video_format_t *source = &vout->p->original;
 910
 911     if (num > 0 && den > 0) {
 912         num *= source->i_visible_height;
 913         den *= source->i_visible_width;
 914         vlc_ureduce(&num, &den, num, den, 0);
 915     }
 916     vout_SetDisplayAspect(vout->p->display.vd, num, den);
 917 }
 918
 919
 920 static void ThreadExecuteCropWindow(vout_thread_t *vout,
 921                                     unsigned crop_num, unsigned crop_den,
 922                                     unsigned x, unsigned y,
 923                                     unsigned width, unsigned height)
 924 {
 925     const video_format_t *source = &vout->p->original;
 926
 927     vout_SetDisplayCrop(vout->p->display.vd,
 928                         crop_num, crop_den,
 929                         source->i_x_offset + x,
 930                         source->i_y_offset + y,
 931                         width, height);
 932 }
 933 static void ThreadExecuteCropBorder(vout_thread_t *vout,
 934                                     unsigned left, unsigned top,
 935                                     unsigned right, unsigned bottom)
 936 {
 937     const video_format_t *source = &vout->p->original;
 938     ThreadExecuteCropWindow(vout, 0, 0,
 939                             left,
 940                             top,
 941                             /* At worst, it becomes < 0 (but unsigned) and will be rejected */
 942                             source->i_visible_width  - (left + right),
 943                             source->i_visible_height - (top  + bottom));
 944 }
 945
 946 static void ThreadExecuteCropRatio(vout_thread_t *vout,
 947                                    unsigned num, unsigned den)
 948 {
 949     const video_format_t *source = &vout->p->original;
 950     ThreadExecuteCropWindow(vout, num, den,
 951                             0, 0,
 952                             source->i_visible_width,
 953                             source->i_visible_height);
 954 }
 955
 956 static int ThreadStart(vout_thread_t *vout, const vout_display_state_t *state)
 957 {
 958     vlc_mouse_Init(&vout->p->mouse);
 959     vout->p->decoder_fifo = picture_fifo_New();
 960     vout->p->decoder_pool = NULL;
 961     vout->p->display_pool = NULL;
 962     vout->p->private_pool = NULL;
 963
 964     vout->p->vfilter_chain =
 965         filter_chain_New( vout, "video filter2", false,
 966                           VoutVideoFilterAllocationSetup, NULL, vout);
 967
 968     vout_display_state_t state_default;
 969     if (!state) {
 970         VoutGetDisplayCfg(vout, &state_default.cfg, vout->p->display.title);
 971         state_default.wm_state = var_CreateGetBool(vout, "video-on-top") ? VOUT_WINDOW_STATE_ABOVE :
 972                                                                            VOUT_WINDOW_STATE_NORMAL;
 973         state_default.sar.num = 0;
 974         state_default.sar.den = 0;
 975
 976         state = &state_default;
 977     }
 978
 979     if (vout_OpenWrapper(vout, vout->p->splitter_name, state))
 980         return VLC_EGENERIC;
 981     if (vout_InitWrapper(vout))
 982         return VLC_EGENERIC;
 983     assert(vout->p->decoder_pool);
 984
 985     vout->p->displayed.decoded       = NULL;
 986     vout->p->displayed.date          = VLC_TS_INVALID;
 987     vout->p->displayed.decoded       = NULL;
 988     vout->p->displayed.timestamp     = VLC_TS_INVALID;
 989     vout->p->displayed.qtype         = QTYPE_NONE;
 990     vout->p->displayed.is_interlaced = false;
 991
 992     vout->p->step.last               = VLC_TS_INVALID;
 993     vout->p->step.timestamp          = VLC_TS_INVALID;
 994
 995     video_format_Print(VLC_OBJECT(vout), "original format", &vout->p->original);
 996     return VLC_SUCCESS;
 997 }
 998
 999 static void ThreadStop(vout_thread_t *vout, vout_display_state_t *state)
1000 {
1001     /* Destroy the video filters2 */
1002     filter_chain_Delete(vout->p->vfilter_chain);
1003
1004     /* Destroy translation tables */
1005     if (vout->p->display.vd) {
1006         if (vout->p->decoder_pool) {
1007             ThreadFlush(vout, true, INT64_MAX);
1008             vout_EndWrapper(vout);
1009         }
1010         vout_CloseWrapper(vout, state);
1011     }
1012
1013     if (vout->p->decoder_fifo)
1014         picture_fifo_Delete(vout->p->decoder_fifo);
1015     assert(!vout->p->decoder_pool);
1016 }
1017
1018 static void ThreadInit(vout_thread_t *vout)
1019 {
1020     vout->p->window.is_unused = true;
1021     vout->p->window.object    = NULL;
1022     vout->p->dead             = false;
1023     vout->p->is_late_dropped  = var_InheritBool(vout, "drop-late-frames");
1024     vout->p->pause.is_on      = false;
1025     vout->p->pause.date       = VLC_TS_INVALID;
1026
1027     vout_chrono_Init(&vout->p->render, 5, 10000); /* Arbitrary initial time */
1028 }
1029
1030 static void ThreadClean(vout_thread_t *vout)
1031 {
1032     if (vout->p->window.object) {
1033         assert(vout->p->window.is_unused);
1034         vout_window_Delete(vout->p->window.object);
1035     }
1036     vout_chrono_Clean(&vout->p->render);
1037     vout->p->dead = true;
1038     vout_control_Dead(&vout->p->control);
1039 }
1040
1041 static int ThreadReinit(vout_thread_t *vout,
1042                         const vout_configuration_t *cfg)
1043 {
1044     video_format_t original;
1045     if (VoutValidateFormat(&original, cfg->fmt)) {
1046         ThreadStop(vout, NULL);
1047         ThreadClean(vout);
1048         return VLC_EGENERIC;
1049     }
1050     if (video_format_IsSimilar(&original, &vout->p->original)) {
1051         if (cfg->dpb_size <= vout->p->dpb_size)
1052             return VLC_SUCCESS;
1053         msg_Warn(vout, "DPB need to be increased");
1054     }
1055
1056     vout_display_state_t state;
1057     memset(&state, 0, sizeof(state));
1058
1059     ThreadStop(vout, &state);
1060
1061     if (!state.cfg.is_fullscreen) {
1062         state.cfg.display.width  = 0;
1063         state.cfg.display.height = 0;
1064     }
1065     state.sar.num = 0;
1066     state.sar.den = 0;
1067     /* FIXME current vout "variables" are not in sync here anymore
1068      * and I am not sure what to do */
1069
1070     vout->p->original = original;
1071     vout->p->dpb_size = cfg->dpb_size;
1072     if (ThreadStart(vout, &state)) {
1073         ThreadClean(vout);
1074         return VLC_EGENERIC;
1075     }
1076     return VLC_SUCCESS;
1077 }
1078
1079 /*****************************************************************************
1080  * Thread: video output thread
1081  *****************************************************************************
1082  * Video output thread. This function does only returns when the thread is
1083  * terminated. It handles the pictures arriving in the video heap and the
1084  * display device events.
1085  *****************************************************************************/
1086 static void *Thread(void *object)
1087 {
1088     vout_thread_t *vout = object;
1089
1090     vout_interlacing_support_t interlacing = {
1091         .is_interlaced = false,
1092         .date = mdate(),
1093     };
1094     vout_postprocessing_support_t postprocessing = {
1095         .qtype = QTYPE_NONE,
1096     };
1097
1098     mtime_t deadline = VLC_TS_INVALID;
1099     for (;;) {
1100         vout_control_cmd_t cmd;
1101
1102         /* FIXME remove thoses ugly timeouts
1103          */
1104         while (!vout_control_Pop(&vout->p->control, &cmd, deadline, 100000)) {
1105             switch(cmd.type) {
1106             case VOUT_CONTROL_INIT:
1107                 ThreadInit(vout);
1108                 if (ThreadStart(vout, NULL)) {
1109                     ThreadStop(vout, NULL);
1110                     ThreadClean(vout);
1111                     return NULL;
1112                 }
1113                 break;
1114             case VOUT_CONTROL_CLEAN:
1115                 ThreadStop(vout, NULL);
1116                 ThreadClean(vout);
1117                 return NULL;
1118             case VOUT_CONTROL_REINIT:
1119                 if (ThreadReinit(vout, cmd.u.cfg))
1120                     return NULL;
1121                 break;
1122             case VOUT_CONTROL_SUBPICTURE:
1123                 ThreadDisplaySubpicture(vout, cmd.u.subpicture);
1124                 cmd.u.subpicture = NULL;
1125                 break;
1126             case VOUT_CONTROL_FLUSH_SUBPICTURE:
1127                 ThreadFlushSubpicture(vout, cmd.u.integer);
1128                 break;
1129             case VOUT_CONTROL_OSD_TITLE:
1130                 ThreadDisplayOsdTitle(vout, cmd.u.string);
1131                 break;
1132             case VOUT_CONTROL_CHANGE_FILTERS:
1133                 ThreadChangeFilters(vout, cmd.u.string);
1134                 break;
1135             case VOUT_CONTROL_CHANGE_SUB_FILTERS:
1136                 ThreadChangeSubFilters(vout, cmd.u.string);
1137                 break;
1138             case VOUT_CONTROL_PAUSE:
1139                 ThreadChangePause(vout, cmd.u.pause.is_on, cmd.u.pause.date);
1140                 break;
1141             case VOUT_CONTROL_FLUSH:
1142                 ThreadFlush(vout, false, cmd.u.time);
1143                 break;
1144             case VOUT_CONTROL_RESET:
1145                 ThreadReset(vout);
1146                 break;
1147             case VOUT_CONTROL_STEP:
1148                 ThreadStep(vout, cmd.u.time_ptr);
1149                 break;
1150             case VOUT_CONTROL_FULLSCREEN:
1151                 ThreadChangeFullscreen(vout, cmd.u.boolean);
1152                 break;
1153             case VOUT_CONTROL_ON_TOP:
1154                 ThreadChangeOnTop(vout, cmd.u.boolean);
1155                 break;
1156             case VOUT_CONTROL_DISPLAY_FILLED:
1157                 ThreadChangeDisplayFilled(vout, cmd.u.boolean);
1158                 break;
1159             case VOUT_CONTROL_ZOOM:
1160                 ThreadChangeZoom(vout, cmd.u.pair.a, cmd.u.pair.b);
1161                 break;
1162             case VOUT_CONTROL_ASPECT_RATIO:
1163                 ThreadChangeAspectRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1164                 break;
1165            case VOUT_CONTROL_CROP_RATIO:
1166                 ThreadExecuteCropRatio(vout, cmd.u.pair.a, cmd.u.pair.b);
1167                 break;
1168             case VOUT_CONTROL_CROP_WINDOW:
1169                 ThreadExecuteCropWindow(vout, 0, 0,
1170                                         cmd.u.window.x, cmd.u.window.y,
1171                                         cmd.u.window.width, cmd.u.window.height);
1172                 break;
1173             case VOUT_CONTROL_CROP_BORDER:
1174                 ThreadExecuteCropBorder(vout,
1175                                         cmd.u.border.left,  cmd.u.border.top,
1176                                         cmd.u.border.right, cmd.u.border.bottom);
1177                 break;
1178             default:
1179                 break;
1180             }
1181             vout_control_cmd_Clean(&cmd);
1182         }
1183
1184         ThreadManage(vout, &deadline, &interlacing, &postprocessing);
1185     }
1186 }
1187