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