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

   1 /*****************************************************************************
   2  * vout_pictures.c : picture management functions
   3  *****************************************************************************
   4  * Copyright (C) 2000-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Vincent Seguin <seguin@via.ecp.fr>
   8  *          Samuel Hocevar <sam@zoy.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc_common.h>
  35 #include <libvlc.h>
  36 #include <vlc_vout.h>
  37 #include <vlc_osd.h>
  38 #include <vlc_filter.h>
  39 #include <vlc_image.h>
  40 #include <vlc_block.h>
  41 #include <vlc_picture_fifo.h>
  42 #include <vlc_picture_pool.h>
  43
  44 #include "vout_pictures.h"
  45 #include "vout_internal.h"
  46
  47 /**
  48  * Display a picture
  49  *
  50  * Remove the reservation flag of a picture, which will cause it to be ready
  51  * for display.
  52  */
  53 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
  54 {
  55     vlc_mutex_lock( &p_vout->picture_lock );
  56
  57     if( p_pic->i_status == RESERVED_PICTURE )
  58     {
  59         p_pic->i_status = READY_PICTURE;
  60         vlc_cond_signal( &p_vout->p->picture_wait );
  61     }
  62     else
  63     {
  64         msg_Err( p_vout, "picture to display %p has invalid status %d",
  65                          p_pic, p_pic->i_status );
  66     }
  67     p_vout->p->i_picture_qtype = p_pic->i_qtype;
  68
  69     vlc_mutex_unlock( &p_vout->picture_lock );
  70 }
  71
  72 /**
  73  * Allocate a picture in the video output heap.
  74  *
  75  * This function creates a reserved image in the video output heap.
  76  * A null pointer is returned if the function fails. This method provides an
  77  * already allocated zone of memory in the picture data fields.
  78  * It needs locking since several pictures can be created by several producers
  79  * threads.
  80  */
  81 int vout_CountPictureAvailable( vout_thread_t *p_vout )
  82 {
  83     int i_free = 0;
  84     int i_pic;
  85
  86     vlc_mutex_lock( &p_vout->picture_lock );
  87     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
  88     {
  89         picture_t *p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1) % I_RENDERPICTURES];
  90
  91         switch( p_pic->i_status )
  92         {
  93             case DESTROYED_PICTURE:
  94                 i_free++;
  95                 break;
  96
  97             case FREE_PICTURE:
  98                 i_free++;
  99                 break;
 100
 101             default:
 102                 break;
 103         }
 104     }
 105     vlc_mutex_unlock( &p_vout->picture_lock );
 106
 107     return i_free;
 108 }
 109
 110 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
 111                                bool b_progressive,
 112                                bool b_top_field_first,
 113                                unsigned int i_nb_fields )
 114 {
 115     int         i_pic;                                      /* picture index */
 116     picture_t * p_pic;
 117     picture_t * p_freepic = NULL;                      /* first free picture */
 118
 119     /* Get lock */
 120     vlc_mutex_lock( &p_vout->picture_lock );
 121
 122     /*
 123      * Look for an empty place in the picture heap.
 124      */
 125     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
 126     {
 127         p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
 128                                  % I_RENDERPICTURES];
 129
 130         switch( p_pic->i_status )
 131         {
 132             case DESTROYED_PICTURE:
 133                 /* Memory will not be reallocated, and function can end
 134                  * immediately - this is the best possible case, since no
 135                  * memory allocation needs to be done */
 136                 p_pic->i_status   = RESERVED_PICTURE;
 137                 p_pic->i_refcount = 0;
 138                 p_pic->b_force    = 0;
 139
 140                 p_pic->b_progressive        = b_progressive;
 141                 p_pic->i_nb_fields          = i_nb_fields;
 142                 p_pic->b_top_field_first    = b_top_field_first;
 143
 144                 p_vout->i_heap_size++;
 145                 p_vout->render.i_last_used_pic =
 146                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 147                     % I_RENDERPICTURES;
 148                 vlc_mutex_unlock( &p_vout->picture_lock );
 149                 return( p_pic );
 150
 151             case FREE_PICTURE:
 152                 /* Picture is empty and ready for allocation */
 153                 p_vout->render.i_last_used_pic =
 154                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 155                     % I_RENDERPICTURES;
 156                 p_freepic = p_pic;
 157                 break;
 158
 159             default:
 160                 break;
 161         }
 162     }
 163
 164     /*
 165      * Prepare picture
 166      */
 167     if( p_freepic != NULL )
 168     {
 169         vout_AllocatePicture( VLC_OBJECT(p_vout),
 170                               p_freepic, p_vout->render.i_chroma,
 171                               p_vout->render.i_width, p_vout->render.i_height,
 172                               p_vout->render.i_aspect );
 173
 174         if( p_freepic->i_planes )
 175         {
 176             /* Copy picture information, set some default values */
 177             p_freepic->i_status   = RESERVED_PICTURE;
 178             p_freepic->i_type     = MEMORY_PICTURE;
 179             p_freepic->b_slow     = 0;
 180
 181             p_freepic->i_refcount = 0;
 182             p_freepic->b_force = 0;
 183
 184             p_freepic->b_progressive        = b_progressive;
 185             p_freepic->i_nb_fields          = i_nb_fields;
 186             p_freepic->b_top_field_first    = b_top_field_first;
 187
 188             p_vout->i_heap_size++;
 189         }
 190         else
 191         {
 192             /* Memory allocation failed : set picture as empty */
 193             p_freepic->i_status = FREE_PICTURE;
 194             p_freepic = NULL;
 195
 196             msg_Err( p_vout, "picture allocation failed" );
 197         }
 198
 199         vlc_mutex_unlock( &p_vout->picture_lock );
 200
 201         return( p_freepic );
 202     }
 203
 204     /* No free or destroyed picture could be found, but the decoder
 205      * will try again in a while. */
 206     vlc_mutex_unlock( &p_vout->picture_lock );
 207
 208     return( NULL );
 209 }
 210
 211 /* */
 212 static void DestroyPicture( vout_thread_t *p_vout, picture_t *p_picture )
 213 {
 214     vlc_assert_locked( &p_vout->picture_lock );
 215
 216     p_picture->i_status = DESTROYED_PICTURE;
 217     p_vout->i_heap_size--;
 218     picture_CleanupQuant( p_picture );
 219
 220     vlc_cond_signal( &p_vout->p->picture_wait );
 221 }
 222
 223 /**
 224  * Remove a permanent or reserved picture from the heap
 225  *
 226  * This function frees a previously reserved picture or a permanent
 227  * picture. It is meant to be used when the construction of a picture aborted.
 228  * Note that the picture will be destroyed even if it is linked !
 229  *
 230  * TODO remove it, vout_DropPicture should be used instead
 231  */
 232 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 233 {
 234 #ifndef NDEBUG
 235     /* Check if picture status is valid */
 236     vlc_mutex_lock( &p_vout->picture_lock );
 237     if( p_pic->i_status != RESERVED_PICTURE )
 238     {
 239         msg_Err( p_vout, "picture to destroy %p has invalid status %d",
 240                          p_pic, p_pic->i_status );
 241     }
 242     vlc_mutex_unlock( &p_vout->picture_lock );
 243 #endif
 244
 245     vout_DropPicture( p_vout, p_pic );
 246 }
 247
 248 /* */
 249 void vout_UsePictureLocked( vout_thread_t *p_vout, picture_t *p_picture )
 250 {
 251     vlc_assert_locked( &p_vout->picture_lock );
 252     if( p_picture->i_refcount > 0 )
 253     {
 254         /* Pretend we displayed the picture, but don't destroy
 255          * it since the decoder might still need it. */
 256         p_picture->i_status = DISPLAYED_PICTURE;
 257     }
 258     else
 259     {
 260         /* Destroy the picture without displaying it */
 261         DestroyPicture( p_vout, p_picture );
 262     }
 263 }
 264
 265 /* */
 266 void vout_DropPicture( vout_thread_t *p_vout, picture_t *p_pic  )
 267 {
 268     vlc_mutex_lock( &p_vout->picture_lock );
 269
 270     if( p_pic->i_status == READY_PICTURE )
 271     {
 272         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 273         p_pic->date = 1;
 274         vlc_cond_signal( &p_vout->p->picture_wait );
 275     }
 276     else
 277     {
 278         vout_UsePictureLocked( p_vout, p_pic );
 279     }
 280
 281     vlc_mutex_unlock( &p_vout->picture_lock );
 282 }
 283
 284 /**
 285  * Increment reference counter of a picture
 286  *
 287  * This function increments the reference counter of a picture in the video
 288  * heap. It needs a lock since several producer threads can access the picture.
 289  */
 290 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 291 {
 292     vlc_mutex_lock( &p_vout->picture_lock );
 293     p_pic->i_refcount++;
 294     vlc_mutex_unlock( &p_vout->picture_lock );
 295 }
 296
 297 /**
 298  * Decrement reference counter of a picture
 299  *
 300  * This function decrement the reference counter of a picture in the video heap
 301  */
 302 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 303 {
 304     vlc_mutex_lock( &p_vout->picture_lock );
 305
 306     if( p_pic->i_refcount > 0 )
 307         p_pic->i_refcount--;
 308     else
 309         msg_Err( p_vout, "Invalid picture reference count (%p, %d)",
 310                  p_pic, p_pic->i_refcount );
 311
 312     if( p_pic->i_refcount == 0 && p_pic->i_status == DISPLAYED_PICTURE )
 313         DestroyPicture( p_vout, p_pic );
 314
 315     vlc_mutex_unlock( &p_vout->picture_lock );
 316 }
 317
 318 static int vout_LockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 319 {
 320     if( p_picture->pf_lock )
 321         return p_picture->pf_lock( p_vout, p_picture );
 322     return VLC_SUCCESS;
 323 }
 324 static void vout_UnlockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 325 {
 326     if( p_picture->pf_unlock )
 327         p_picture->pf_unlock( p_vout, p_picture );
 328 }
 329
 330 /**
 331  * Render a picture
 332  *
 333  * This function chooses whether the current picture needs to be copied
 334  * before rendering, does the subpicture magic, and tells the video output
 335  * thread which direct buffer needs to be displayed.
 336  */
 337 picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
 338                                subpicture_t *p_subpic, mtime_t render_date )
 339 {
 340     if( p_pic == NULL )
 341         return NULL;
 342
 343     if( p_pic->i_type == DIRECT_PICTURE )
 344     {
 345         /* Picture is in a direct buffer. */
 346
 347         if( p_subpic != NULL )
 348         {
 349             /* We have subtitles. First copy the picture to
 350              * the spare direct buffer, then render the
 351              * subtitles. */
 352             if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 353                 return NULL;
 354
 355             picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 356
 357             spu_RenderSubpictures( p_vout->p_spu,
 358                                    PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 359                                    p_subpic, &p_vout->fmt_in, render_date );
 360
 361             vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 362
 363             return PP_OUTPUTPICTURE[0];
 364         }
 365
 366         /* No subtitles, picture is in a directbuffer so
 367          * we can display it directly (even if it is still
 368          * in use or not). */
 369         return p_pic;
 370     }
 371
 372     /* Not a direct buffer. We either need to copy it to a direct buffer,
 373      * or render it if the chroma isn't the same. */
 374     if( p_vout->p->b_direct )
 375     {
 376         /* Picture is not in a direct buffer, but is exactly the
 377          * same size as the direct buffers. A memcpy() is enough,
 378          * then render the subtitles. */
 379
 380         if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 381             return NULL;
 382
 383         picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 384         spu_RenderSubpictures( p_vout->p_spu,
 385                                PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 386                                p_subpic, &p_vout->fmt_in, render_date );
 387
 388         vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 389
 390         return PP_OUTPUTPICTURE[0];
 391     }
 392
 393     /* Picture is not in a direct buffer, and needs to be converted to
 394      * another size/chroma. Then the subtitles need to be rendered as
 395      * well. This usually means software YUV, or hardware YUV with a
 396      * different chroma. */
 397
 398     if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
 399     {
 400         /* The picture buffer is in slow memory. We'll use
 401          * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
 402          * one for subpictures rendering. */
 403         picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
 404         if( p_tmp_pic->i_status == FREE_PICTURE )
 405         {
 406             vout_AllocatePicture( VLC_OBJECT(p_vout),
 407                                   p_tmp_pic, p_vout->fmt_out.i_chroma,
 408                                   p_vout->fmt_out.i_width,
 409                                   p_vout->fmt_out.i_height,
 410                                   p_vout->fmt_out.i_aspect );
 411             p_tmp_pic->i_type = MEMORY_PICTURE;
 412             p_tmp_pic->i_status = RESERVED_PICTURE;
 413         }
 414
 415         /* Convert image to the first direct buffer */
 416         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
 417         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 418
 419         /* Render subpictures on the first direct buffer */
 420         spu_RenderSubpictures( p_vout->p_spu,
 421                                p_tmp_pic, &p_vout->fmt_out,
 422                                p_subpic, &p_vout->fmt_in, render_date );
 423
 424         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 425             return NULL;
 426
 427         picture_Copy( &p_vout->p_picture[0], p_tmp_pic );
 428     }
 429     else
 430     {
 431         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 432             return NULL;
 433
 434         /* Convert image to the first direct buffer */
 435         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)&p_vout->p_picture[0];
 436         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 437
 438         /* Render subpictures on the first direct buffer */
 439         spu_RenderSubpictures( p_vout->p_spu,
 440                                &p_vout->p_picture[0], &p_vout->fmt_out,
 441                                p_subpic, &p_vout->fmt_in, render_date );
 442     }
 443
 444     vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );
 445
 446     return &p_vout->p_picture[0];
 447 }
 448
 449 /**
 450  * Calculate image window coordinates
 451  *
 452  * This function will be accessed by plugins. It calculates the relative
 453  * position of the output window and the image window.
 454  */
 455 void vout_PlacePicture( const vout_thread_t *p_vout,
 456                         unsigned int i_width, unsigned int i_height,
 457                         unsigned int *restrict pi_x,
 458                         unsigned int *restrict pi_y,
 459                         unsigned int *restrict pi_width,
 460                         unsigned int *restrict pi_height )
 461 {
 462     if( i_width <= 0 || i_height <= 0 )
 463     {
 464         *pi_width = *pi_height = *pi_x = *pi_y = 0;
 465         return;
 466     }
 467
 468     if( p_vout->b_autoscale )
 469     {
 470         *pi_width = i_width;
 471         *pi_height = i_height;
 472     }
 473     else
 474     {
 475         int i_zoom = p_vout->i_zoom;
 476         /* be realistic, scaling factor confined between .2 and 10. */
 477         if( i_zoom > 10 * ZOOM_FP_FACTOR )      i_zoom = 10 * ZOOM_FP_FACTOR;
 478         else if( i_zoom <  ZOOM_FP_FACTOR / 5 ) i_zoom = ZOOM_FP_FACTOR / 5;
 479
 480         unsigned int i_original_width, i_original_height;
 481
 482         if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 483         {
 484             i_original_width = p_vout->fmt_in.i_visible_width *
 485                                p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den;
 486             i_original_height =  p_vout->fmt_in.i_visible_height;
 487         }
 488         else
 489         {
 490             i_original_width =  p_vout->fmt_in.i_visible_width;
 491             i_original_height = p_vout->fmt_in.i_visible_height *
 492                                 p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num;
 493         }
 494 #ifdef WIN32
 495         /* On windows, inner video window exceeding container leads to black screen */
 496         *pi_width = __MIN( i_width, i_original_width * i_zoom / ZOOM_FP_FACTOR );
 497         *pi_height = __MIN( i_height, i_original_height * i_zoom / ZOOM_FP_FACTOR );
 498 #else
 499         *pi_width = i_original_width * i_zoom / ZOOM_FP_FACTOR ;
 500         *pi_height = i_original_height * i_zoom / ZOOM_FP_FACTOR ;
 501 #endif
 502     }
 503
 504     int64_t i_scaled_width = p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
 505                               *pi_height / p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
 506     int64_t i_scaled_height = p_vout->fmt_in.i_visible_height * (int64_t)p_vout->fmt_in.i_sar_den *
 507                                *pi_width / p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
 508
 509     if( i_scaled_width <= 0 || i_scaled_height <= 0 )
 510     {
 511         msg_Warn( p_vout, "ignoring broken aspect ratio" );
 512         i_scaled_width = *pi_width;
 513         i_scaled_height = *pi_height;
 514     }
 515
 516     if( i_scaled_width > *pi_width )
 517         *pi_height = i_scaled_height;
 518     else
 519         *pi_width = i_scaled_width;
 520
 521     switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
 522     {
 523     case VOUT_ALIGN_LEFT:
 524         *pi_x = 0;
 525         break;
 526     case VOUT_ALIGN_RIGHT:
 527         *pi_x = i_width - *pi_width;
 528         break;
 529     default:
 530         *pi_x = ( i_width - *pi_width ) / 2;
 531     }
 532
 533     switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
 534     {
 535     case VOUT_ALIGN_TOP:
 536         *pi_y = 0;
 537         break;
 538     case VOUT_ALIGN_BOTTOM:
 539         *pi_y = i_height - *pi_height;
 540         break;
 541     default:
 542         *pi_y = ( i_height - *pi_height ) / 2;
 543     }
 544 }
 545
 546 /**
 547  * Allocate a new picture in the heap.
 548  *
 549  * This function allocates a fake direct buffer in memory, which can be
 550  * used exactly like a video buffer. The video output thread then manages
 551  * how it gets displayed.
 552  */
 553 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
 554                             vlc_fourcc_t i_chroma,
 555                             int i_width, int i_height, int i_aspect )
 556 {
 557     int i_bytes, i_index, i_width_aligned, i_height_aligned;
 558
 559     /* Make sure the real dimensions are a multiple of 16 */
 560     i_width_aligned = (i_width + 15) >> 4 << 4;
 561     i_height_aligned = (i_height + 15) >> 4 << 4;
 562
 563     if( picture_Setup( p_pic, i_chroma,
 564                        i_width, i_height, i_aspect ) != VLC_SUCCESS )
 565     {
 566         p_pic->i_planes = 0;
 567         return VLC_EGENERIC;
 568     }
 569
 570     /* Calculate how big the new image should be */
 571     i_bytes = p_pic->format.i_bits_per_pixel *
 572         i_width_aligned * i_height_aligned / 8;
 573
 574     p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
 575
 576     if( p_pic->p_data == NULL )
 577     {
 578         p_pic->i_planes = 0;
 579         return VLC_EGENERIC;
 580     }
 581
 582     /* Fill the p_pixels field for each plane */
 583     p_pic->p[ 0 ].p_pixels = p_pic->p_data;
 584
 585     for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
 586     {
 587         p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
 588             p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
 589     }
 590
 591     return VLC_SUCCESS;
 592 }
 593
 594 /**
 595  * Compare two chroma values
 596  *
 597  * This function returns 1 if the two fourcc values given as argument are
 598  * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
 599  */
 600 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
 601 {
 602     static const vlc_fourcc_t p_I420[] = {
 603         VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, 0
 604     };
 605     static const vlc_fourcc_t p_I422[] = {
 606         VLC_CODEC_I422, VLC_CODEC_J422, 0
 607     };
 608     static const vlc_fourcc_t p_I440[] = {
 609         VLC_CODEC_I440, VLC_CODEC_J440, 0
 610     };
 611     static const vlc_fourcc_t p_I444[] = {
 612         VLC_CODEC_I444, VLC_CODEC_J444, 0
 613     };
 614     static const vlc_fourcc_t *pp_fcc[] = {
 615         p_I420, p_I422, p_I440, p_I444, NULL
 616     };
 617
 618     /* */
 619     i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, i_chroma );
 620     i_amorhc = vlc_fourcc_GetCodec( VIDEO_ES, i_amorhc );
 621
 622     /* If they are the same, they are the same ! */
 623     if( i_chroma == i_amorhc )
 624         return 1;
 625
 626     /* Check for equivalence classes */
 627     for( int i = 0; pp_fcc[i] != NULL; i++ )
 628     {
 629         bool b_fcc1 = false;
 630         bool b_fcc2 = false;
 631         for( int j = 0; pp_fcc[i][j] != 0; j++ )
 632         {
 633             if( i_chroma == pp_fcc[i][j] )
 634                 b_fcc1 = true;
 635             if( i_amorhc == pp_fcc[i][j] )
 636                 b_fcc2 = true;
 637         }
 638         if( b_fcc1 && b_fcc2 )
 639             return 1;
 640     }
 641     return 0;
 642 }
 643
 644 /*****************************************************************************
 645  *
 646  *****************************************************************************/
 647 static void PictureReleaseCallback( picture_t *p_picture )
 648 {
 649     if( --p_picture->i_refcount > 0 )
 650         return;
 651     picture_Delete( p_picture );
 652 }
 653
 654 /*****************************************************************************
 655  *
 656  *****************************************************************************/
 657 void picture_Reset( picture_t *p_picture )
 658 {
 659     /* */
 660     p_picture->date = VLC_TS_INVALID;
 661     p_picture->b_force = false;
 662     p_picture->b_progressive = false;
 663     p_picture->i_nb_fields = 0;
 664     p_picture->b_top_field_first = false;
 665     picture_CleanupQuant( p_picture );
 666 }
 667
 668 /*****************************************************************************
 669  *
 670  *****************************************************************************/
 671 int picture_Setup( picture_t *p_picture, vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 672 {
 673     int i_index, i_width_aligned, i_height_aligned;
 674
 675     /* Store default values */
 676     for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
 677     {
 678         p_picture->p[i_index].p_pixels = NULL;
 679         p_picture->p[i_index].i_pixel_pitch = 1;
 680     }
 681
 682     p_picture->pf_release = NULL;
 683     p_picture->p_release_sys = NULL;
 684     p_picture->pf_lock = NULL;
 685     p_picture->pf_unlock = NULL;
 686     p_picture->i_refcount = 0;
 687
 688     p_picture->i_qtype = QTYPE_NONE;
 689     p_picture->i_qstride = 0;
 690     p_picture->p_q = NULL;
 691
 692     video_format_Setup( &p_picture->format, i_chroma, i_width, i_height, i_aspect );
 693
 694     /* Make sure the real dimensions are a multiple of 16 */
 695     i_width_aligned = (i_width + 15) >> 4 << 4;
 696     i_height_aligned = (i_height + 15) >> 4 << 4;
 697
 698     /* Calculate coordinates */
 699     switch( vlc_fourcc_GetCodec( VIDEO_ES, i_chroma ) )
 700     {
 701     case VLC_CODEC_I411:
 702         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 703         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 704         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 705         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 706         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 707         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 708         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 709         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 710         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 711         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 712         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 713         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 714         p_picture->i_planes = 3;
 715         break;
 716
 717     case VLC_CODEC_I410:
 718         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 719         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 720         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 721         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 722         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 4;
 723         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 4;
 724         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 725         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 726         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 4;
 727         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 4;
 728         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 729         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 730         p_picture->i_planes = 3;
 731         break;
 732
 733     case VLC_CODEC_YV12:
 734     case VLC_CODEC_I420:
 735     case VLC_CODEC_J420:
 736         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 737         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 738         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 739         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 740         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 741         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 742         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 743         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 744         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 745         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 746         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 747         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 748         p_picture->i_planes = 3;
 749         break;
 750
 751     case VLC_CODEC_I422:
 752     case VLC_CODEC_J422:
 753         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 754         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 755         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 756         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 757         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 758         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 759         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 760         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 761         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 762         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 763         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 764         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 765         p_picture->i_planes = 3;
 766         break;
 767
 768     case VLC_CODEC_I440:
 769     case VLC_CODEC_J440:
 770         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 771         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 772         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 773         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 774         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 775         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 776         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 777         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 778         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 779         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 780         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 781         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 782         p_picture->i_planes = 3;
 783         break;
 784
 785     case VLC_CODEC_I444:
 786     case VLC_CODEC_J444:
 787         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 788         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 789         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 790         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 791         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 792         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 793         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 794         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 795         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 796         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 797         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 798         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 799         p_picture->i_planes = 3;
 800         break;
 801
 802     case VLC_CODEC_YUVA:
 803         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 804         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 805         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 806         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 807         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 808         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 809         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 810         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 811         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 812         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 813         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 814         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 815         p_picture->p[ A_PLANE ].i_lines = i_height_aligned;
 816         p_picture->p[ A_PLANE ].i_visible_lines = i_height;
 817         p_picture->p[ A_PLANE ].i_pitch = i_width_aligned;
 818         p_picture->p[ A_PLANE ].i_visible_pitch = i_width;
 819         p_picture->i_planes = 4;
 820         break;
 821
 822     case VLC_CODEC_YUVP:
 823         p_picture->p->i_lines = i_height_aligned;
 824         p_picture->p->i_visible_lines = i_height;
 825         p_picture->p->i_pitch = i_width_aligned;
 826         p_picture->p->i_visible_pitch = i_width;
 827         p_picture->p->i_pixel_pitch = 8;
 828         p_picture->i_planes = 1;
 829         break;
 830
 831     case VLC_CODEC_Y211:
 832         p_picture->p->i_lines = i_height_aligned;
 833         p_picture->p->i_visible_lines = i_height;
 834         p_picture->p->i_pitch = i_width_aligned;
 835         p_picture->p->i_visible_pitch = i_width;
 836         p_picture->p->i_pixel_pitch = 4;
 837         p_picture->i_planes = 1;
 838         break;
 839
 840     case VLC_CODEC_UYVY:
 841     case VLC_CODEC_VYUY:
 842     case VLC_CODEC_YUYV:
 843     case VLC_CODEC_YVYU:
 844         p_picture->p->i_lines = i_height_aligned;
 845         p_picture->p->i_visible_lines = i_height;
 846         p_picture->p->i_pitch = i_width_aligned * 2;
 847         p_picture->p->i_visible_pitch = i_width * 2;
 848         p_picture->p->i_pixel_pitch = 4;
 849         p_picture->i_planes = 1;
 850         break;
 851
 852     case VLC_CODEC_RGB8:
 853         p_picture->p->i_lines = i_height_aligned;
 854         p_picture->p->i_visible_lines = i_height;
 855         p_picture->p->i_pitch = i_width_aligned;
 856         p_picture->p->i_visible_pitch = i_width;
 857         p_picture->p->i_pixel_pitch = 1;
 858         p_picture->i_planes = 1;
 859         break;
 860
 861     case VLC_CODEC_RGB15:
 862         p_picture->p->i_lines = i_height_aligned;
 863         p_picture->p->i_visible_lines = i_height;
 864         p_picture->p->i_pitch = i_width_aligned * 2;
 865         p_picture->p->i_visible_pitch = i_width * 2;
 866         p_picture->p->i_pixel_pitch = 2;
 867         p_picture->i_planes = 1;
 868         break;
 869
 870     case VLC_CODEC_RGB16:
 871         p_picture->p->i_lines = i_height_aligned;
 872         p_picture->p->i_visible_lines = i_height;
 873         p_picture->p->i_pitch = i_width_aligned * 2;
 874         p_picture->p->i_visible_pitch = i_width * 2;
 875         p_picture->p->i_pixel_pitch = 2;
 876         p_picture->i_planes = 1;
 877         break;
 878
 879     case VLC_CODEC_RGB24:
 880         p_picture->p->i_lines = i_height_aligned;
 881         p_picture->p->i_visible_lines = i_height;
 882         p_picture->p->i_pitch = i_width_aligned * 3;
 883         p_picture->p->i_visible_pitch = i_width * 3;
 884         p_picture->p->i_pixel_pitch = 3;
 885         p_picture->i_planes = 1;
 886         break;
 887
 888     case VLC_CODEC_RGB32:
 889     case VLC_CODEC_RGBA:
 890         p_picture->p->i_lines = i_height_aligned;
 891         p_picture->p->i_visible_lines = i_height;
 892         p_picture->p->i_pitch = i_width_aligned * 4;
 893         p_picture->p->i_visible_pitch = i_width * 4;
 894         p_picture->p->i_pixel_pitch = 4;
 895         p_picture->i_planes = 1;
 896         break;
 897
 898     case VLC_CODEC_GREY:
 899     case VLC_CODEC_RGBP:
 900         p_picture->p->i_lines = i_height_aligned;
 901         p_picture->p->i_visible_lines = i_height;
 902         p_picture->p->i_pitch = i_width_aligned;
 903         p_picture->p->i_visible_pitch = i_width;
 904         p_picture->p->i_pixel_pitch = 1;
 905         p_picture->i_planes = 1;
 906         break;
 907
 908     default:
 909         p_picture->i_planes = 0;
 910         return VLC_EGENERIC;
 911     }
 912
 913     return VLC_SUCCESS;
 914 }
 915
 916 /*****************************************************************************
 917  *
 918  *****************************************************************************/
 919 picture_t *picture_NewFromResource( const video_format_t *p_fmt, const picture_resource_t *p_resource )
 920 {
 921     video_format_t fmt = *p_fmt;
 922
 923     /* It is needed to be sure all informations are filled */
 924     video_format_Setup( &fmt, p_fmt->i_chroma,
 925                               p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
 926
 927     /* */
 928     picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
 929     if( !p_picture )
 930         return NULL;
 931
 932     if( p_resource )
 933     {
 934         if( picture_Setup( p_picture, fmt.i_chroma, fmt.i_width, fmt.i_height, fmt.i_aspect ) )
 935         {
 936             free( p_picture );
 937             return NULL;
 938         }
 939         p_picture->p_sys = p_resource->p_sys;
 940
 941         for( int i = 0; i < p_picture->i_planes; i++ )
 942         {
 943             p_picture->p[i].p_pixels = p_resource->p[i].p_pixels;
 944             p_picture->p[i].i_lines  = p_resource->p[i].i_lines;
 945             p_picture->p[i].i_pitch  = p_resource->p[i].i_pitch;
 946         }
 947     }
 948     else
 949     {
 950         if( __vout_AllocatePicture( NULL, p_picture,
 951                                     fmt.i_chroma, fmt.i_width, fmt.i_height, fmt.i_aspect ) )
 952         {
 953             free( p_picture );
 954             return NULL;
 955         }
 956     }
 957     /* */
 958     p_picture->format = fmt;
 959     p_picture->i_refcount = 1;
 960     p_picture->pf_release = PictureReleaseCallback;
 961     p_picture->i_status = RESERVED_PICTURE;
 962
 963     return p_picture;
 964 }
 965 picture_t *picture_NewFromFormat( const video_format_t *p_fmt )
 966 {
 967     return picture_NewFromResource( p_fmt, NULL );
 968 }
 969 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 970 {
 971     video_format_t fmt;
 972
 973     memset( &fmt, 0, sizeof(fmt) );
 974     video_format_Setup( &fmt, i_chroma, i_width, i_height, i_aspect );
 975
 976     return picture_NewFromFormat( &fmt );
 977 }
 978
 979 /*****************************************************************************
 980  *
 981  *****************************************************************************/
 982 void picture_Delete( picture_t *p_picture )
 983 {
 984     assert( p_picture && p_picture->i_refcount == 0 );
 985     assert( p_picture->p_release_sys == NULL );
 986
 987     free( p_picture->p_q );
 988     free( p_picture->p_data_orig );
 989     free( p_picture->p_sys );
 990     free( p_picture );
 991 }
 992
 993 /*****************************************************************************
 994  *
 995  *****************************************************************************/
 996 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
 997 {
 998     int i;
 999
1000     for( i = 0; i < p_src->i_planes ; i++ )
1001         plane_CopyPixels( p_dst->p+i, p_src->p+i );
1002 }
1003
1004 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
1005 {
1006     const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
1007                                      p_src->i_visible_pitch );
1008     const unsigned i_height = __MIN( p_dst->i_visible_lines,
1009                                      p_src->i_visible_lines );
1010
1011     if( p_src->i_pitch == p_dst->i_pitch )
1012     {
1013         /* There are margins, but with the same width : perfect ! */
1014         vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
1015                     p_src->i_pitch * i_height );
1016     }
1017     else
1018     {
1019         /* We need to proceed line by line */
1020         uint8_t *p_in = p_src->p_pixels;
1021         uint8_t *p_out = p_dst->p_pixels;
1022         int i_line;
1023
1024         assert( p_in );
1025         assert( p_out );
1026
1027         for( i_line = i_height; i_line--; )
1028         {
1029             vlc_memcpy( p_out, p_in, i_width );
1030             p_in += p_src->i_pitch;
1031             p_out += p_dst->i_pitch;
1032         }
1033     }
1034 }
1035
1036 /*****************************************************************************
1037  *
1038  *****************************************************************************/
1039 int picture_Export( vlc_object_t *p_obj,
1040                     block_t **pp_image,
1041                     video_format_t *p_fmt,
1042                     picture_t *p_picture,
1043                     vlc_fourcc_t i_format,
1044                     int i_override_width, int i_override_height )
1045 {
1046     /* */
1047     video_format_t fmt_in = p_picture->format;
1048     if( fmt_in.i_sar_num <= 0 || fmt_in.i_sar_den <= 0 )
1049     {
1050         fmt_in.i_sar_num =
1051         fmt_in.i_sar_den = 1;
1052     }
1053
1054     /* */
1055     video_format_t fmt_out;
1056     memset( &fmt_out, 0, sizeof(fmt_out) );
1057     fmt_out.i_sar_num =
1058     fmt_out.i_sar_den = 1;
1059     fmt_out.i_chroma  = i_format;
1060
1061     /* compute original width/height */
1062     unsigned int i_original_width;
1063     unsigned int i_original_height;
1064     if( fmt_in.i_sar_num >= fmt_in.i_sar_den )
1065     {
1066         i_original_width = fmt_in.i_width * fmt_in.i_sar_num / fmt_in.i_sar_den;
1067         i_original_height = fmt_in.i_height;
1068     }
1069     else
1070     {
1071         i_original_width =  fmt_in.i_width;
1072         i_original_height = fmt_in.i_height * fmt_in.i_sar_den / fmt_in.i_sar_num;
1073     }
1074
1075     /* */
1076     fmt_out.i_width  = ( i_override_width < 0 ) ?
1077                        i_original_width : i_override_width;
1078     fmt_out.i_height = ( i_override_height < 0 ) ?
1079                        i_original_height : i_override_height;
1080
1081     /* scale if only one direction is provided */
1082     if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
1083     {
1084         fmt_out.i_height = fmt_in.i_height * fmt_out.i_width
1085                      * fmt_in.i_sar_den / fmt_in.i_width / fmt_in.i_sar_num;
1086     }
1087     else if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
1088     {
1089         fmt_out.i_width  = fmt_in.i_width * fmt_out.i_height
1090                      * fmt_in.i_sar_num / fmt_in.i_height / fmt_in.i_sar_den;
1091     }
1092
1093     image_handler_t *p_image = image_HandlerCreate( p_obj );
1094
1095     block_t *p_block = image_Write( p_image, p_picture, &fmt_in, &fmt_out );
1096
1097     image_HandlerDelete( p_image );
1098
1099     if( !p_block )
1100         return VLC_EGENERIC;
1101
1102     p_block->i_pts =
1103     p_block->i_dts = p_picture->date;
1104
1105     if( p_fmt )
1106         *p_fmt = fmt_out;
1107     *pp_image = p_block;
1108
1109     return VLC_SUCCESS;
1110 }
1111
1112 /*****************************************************************************
1113  *
1114  *****************************************************************************/
1115 struct picture_fifo_t
1116 {
1117     vlc_mutex_t lock;
1118     picture_t *p_first;
1119     picture_t **pp_last;
1120 };
1121
1122 static void PictureFifoReset( picture_fifo_t *p_fifo )
1123 {
1124     p_fifo->p_first = NULL;
1125     p_fifo->pp_last = &p_fifo->p_first;
1126 }
1127 static void PictureFifoPush( picture_fifo_t *p_fifo, picture_t *p_picture )
1128 {
1129     assert( !p_picture->p_next );
1130     *p_fifo->pp_last = p_picture;
1131     p_fifo->pp_last = &p_picture->p_next;
1132 }
1133 static picture_t *PictureFifoPop( picture_fifo_t *p_fifo )
1134 {
1135     picture_t *p_picture = p_fifo->p_first;
1136
1137     if( p_picture )
1138     {
1139         p_fifo->p_first = p_picture->p_next;
1140         if( !p_fifo->p_first )
1141             p_fifo->pp_last = &p_fifo->p_first;
1142     }
1143     return p_picture;
1144 }
1145
1146 picture_fifo_t *picture_fifo_New(void)
1147 {
1148     picture_fifo_t *p_fifo = malloc( sizeof(*p_fifo) );
1149     if( !p_fifo )
1150         return NULL;
1151
1152     vlc_mutex_init( &p_fifo->lock );
1153     PictureFifoReset( p_fifo );
1154     return p_fifo;
1155 }
1156
1157 void picture_fifo_Push( picture_fifo_t *p_fifo, picture_t *p_picture )
1158 {
1159     vlc_mutex_lock( &p_fifo->lock );
1160     PictureFifoPush( p_fifo, p_picture );
1161     vlc_mutex_unlock( &p_fifo->lock );
1162 }
1163 picture_t *picture_fifo_Pop( picture_fifo_t *p_fifo )
1164 {
1165     vlc_mutex_lock( &p_fifo->lock );
1166     picture_t *p_picture = PictureFifoPop( p_fifo );
1167     vlc_mutex_unlock( &p_fifo->lock );
1168
1169     return p_picture;
1170 }
1171 picture_t *picture_fifo_Peek( picture_fifo_t *p_fifo )
1172 {
1173     vlc_mutex_lock( &p_fifo->lock );
1174     picture_t *p_picture = p_fifo->p_first;
1175     if( p_picture )
1176         picture_Hold( p_picture );
1177     vlc_mutex_unlock( &p_fifo->lock );
1178
1179     return p_picture;
1180 }
1181 void picture_fifo_Flush( picture_fifo_t *p_fifo, mtime_t i_date, bool b_below )
1182 {
1183     picture_t *p_picture;
1184
1185     vlc_mutex_lock( &p_fifo->lock );
1186
1187     p_picture = p_fifo->p_first;
1188     PictureFifoReset( p_fifo );
1189
1190     picture_fifo_t tmp;
1191     PictureFifoReset( &tmp );
1192
1193     while( p_picture )
1194     {
1195         picture_t *p_next = p_picture->p_next;
1196
1197         p_picture->p_next = NULL;
1198         if( (  b_below && p_picture->date <= i_date ) ||
1199             ( !b_below && p_picture->date >= i_date ) )
1200             PictureFifoPush( &tmp, p_picture );
1201         else
1202             PictureFifoPush( p_fifo, p_picture );
1203         p_picture = p_next;
1204     }
1205     vlc_mutex_unlock( &p_fifo->lock );
1206
1207     for( ;; )
1208     {
1209         picture_t *p_picture = PictureFifoPop( &tmp );
1210         if( !p_picture )
1211             break;
1212         picture_Release( p_picture );
1213     }
1214 }
1215 void picture_fifo_OffsetDate( picture_fifo_t *p_fifo, mtime_t i_delta )
1216 {
1217     vlc_mutex_lock( &p_fifo->lock );
1218     for( picture_t *p_picture = p_fifo->p_first; p_picture != NULL; )
1219     {
1220         p_picture->date += i_delta;
1221         p_picture = p_picture->p_next;
1222     }
1223     vlc_mutex_unlock( &p_fifo->lock );
1224 }
1225 void picture_fifo_Delete( picture_fifo_t *p_fifo )
1226 {
1227     picture_fifo_Flush( p_fifo, INT64_MAX, true );
1228     vlc_mutex_destroy( &p_fifo->lock );
1229 }
1230
1231 /*****************************************************************************
1232  *
1233  *****************************************************************************/
1234 struct picture_release_sys_t
1235 {
1236     /* Saved release */
1237     void (*pf_release)( picture_t * );
1238     picture_release_sys_t *p_release_sys;
1239
1240     /* */
1241     int64_t i_tick;
1242 };
1243
1244 struct picture_pool_t
1245 {
1246     int64_t i_tick;
1247
1248     int i_picture;
1249     picture_t **pp_picture;
1250 };
1251
1252 static void PicturePoolPictureRelease( picture_t * );
1253
1254 picture_pool_t *picture_pool_New( int i_picture, picture_t *pp_picture[] )
1255 {
1256     picture_pool_t *p_pool = calloc( 1, sizeof(*p_pool) );
1257     if( !p_pool )
1258         return NULL;
1259
1260     p_pool->i_tick = 1;
1261     p_pool->i_picture = i_picture;
1262     p_pool->pp_picture = calloc( p_pool->i_picture, sizeof(*p_pool->pp_picture) );
1263
1264     for( int i = 0; i < i_picture; i++ )
1265     {
1266         picture_t *p_picture = pp_picture[i];
1267
1268         /* The pool must be the only owner of the picture */
1269         assert( p_picture->i_refcount == 1 );
1270
1271         /* Install the new release callback */
1272         picture_release_sys_t *p_release_sys = malloc( sizeof(*p_release_sys) );
1273         p_release_sys->pf_release = p_picture->pf_release;
1274         p_release_sys->p_release_sys = p_picture->p_release_sys;
1275         p_release_sys->i_tick = 0;
1276
1277         p_picture->i_refcount = 0;
1278         p_picture->pf_release = PicturePoolPictureRelease;
1279         p_picture->p_release_sys = p_release_sys;
1280
1281         /* */
1282         p_pool->pp_picture[i] = p_picture;
1283     }
1284     return p_pool;
1285 }
1286
1287 picture_pool_t *picture_pool_NewFromFormat( const video_format_t *p_fmt, int i_picture )
1288 {
1289     picture_t *pp_picture[i_picture];
1290
1291     for( int i = 0; i < i_picture; i++ )
1292     {
1293         pp_picture[i] = picture_New( p_fmt->i_chroma,
1294                                      p_fmt->i_width, p_fmt->i_height,
1295                                      p_fmt->i_aspect );
1296         if( !pp_picture[i] )
1297             goto error;
1298     }
1299     picture_pool_t *p_pool = picture_pool_New( i_picture, pp_picture );
1300     if( !p_pool )
1301         goto error;
1302
1303     return p_pool;
1304
1305 error:
1306     for( int i = 0; i < i_picture; i++ )
1307     {
1308         if( !pp_picture[i] )
1309             break;
1310         picture_Release( pp_picture[i] );
1311     }
1312     return NULL;
1313 }
1314
1315 void picture_pool_Delete( picture_pool_t *p_pool )
1316 {
1317     for( int i = 0; i < p_pool->i_picture; i++ )
1318     {
1319         picture_t *p_picture = p_pool->pp_picture[i];
1320         picture_release_sys_t *p_release_sys = p_picture->p_release_sys;
1321
1322         assert( p_picture->i_refcount == 0 );
1323
1324         /* Restore old release callback */
1325         p_picture->i_refcount = 1;
1326         p_picture->pf_release = p_release_sys->pf_release;
1327         p_picture->p_release_sys = p_release_sys->p_release_sys;
1328
1329         picture_Release( p_picture );
1330
1331         free( p_release_sys );
1332     }
1333     free( p_pool );
1334 }
1335
1336 picture_t *picture_pool_Get( picture_pool_t *p_pool )
1337 {
1338     for( int i = 0; i < p_pool->i_picture; i++ )
1339     {
1340         picture_t *p_picture = p_pool->pp_picture[i];
1341
1342         if( p_picture->i_refcount <= 0 )
1343         {
1344             p_picture->p_release_sys->i_tick = p_pool->i_tick++;
1345             picture_Hold( p_picture );
1346             return p_picture;
1347         }
1348     }
1349     return NULL;
1350 }
1351
1352 void picture_pool_NonEmpty( picture_pool_t *p_pool, bool b_reset )
1353 {
1354     picture_t *p_old = NULL;
1355
1356     for( int i = 0; i < p_pool->i_picture; i++ )
1357     {
1358         picture_t *p_picture = p_pool->pp_picture[i];
1359
1360         if( b_reset )
1361             p_picture->i_refcount = 0;
1362         else if( p_picture->i_refcount == 0 )
1363             return;
1364         else if( !p_old || p_picture->p_release_sys->i_tick < p_old->p_release_sys->i_tick )
1365             p_old = p_picture;
1366     }
1367     if( !b_reset && p_old )
1368         p_old->i_refcount = 0;
1369 }
1370
1371 static void PicturePoolPictureRelease( picture_t *p_picture )
1372 {
1373     assert( p_picture->i_refcount > 0 );
1374
1375     if( --p_picture->i_refcount > 0 )
1376         return;
1377
1378     /* Nothing to do for the moment */
1379 }
1380