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     VLC_UNUSED(p_this);
 558     int i_bytes, i_index, i_width_aligned, i_height_aligned;
 559
 560     /* Make sure the real dimensions are a multiple of 16 */
 561     i_width_aligned = (i_width + 15) >> 4 << 4;
 562     i_height_aligned = (i_height + 15) >> 4 << 4;
 563
 564     if( picture_Setup( p_pic, i_chroma,
 565                        i_width, i_height, i_aspect ) != VLC_SUCCESS )
 566     {
 567         p_pic->i_planes = 0;
 568         return VLC_EGENERIC;
 569     }
 570
 571     /* Calculate how big the new image should be */
 572     i_bytes = p_pic->format.i_bits_per_pixel *
 573         i_width_aligned * i_height_aligned / 8;
 574
 575     p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
 576
 577     if( p_pic->p_data == NULL )
 578     {
 579         p_pic->i_planes = 0;
 580         return VLC_EGENERIC;
 581     }
 582
 583     /* Fill the p_pixels field for each plane */
 584     p_pic->p[ 0 ].p_pixels = p_pic->p_data;
 585
 586     for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
 587     {
 588         p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
 589             p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
 590     }
 591
 592     return VLC_SUCCESS;
 593 }
 594
 595 /**
 596  * Compare two chroma values
 597  *
 598  * This function returns 1 if the two fourcc values given as argument are
 599  * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
 600  */
 601 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
 602 {
 603     static const vlc_fourcc_t p_I420[] = {
 604         VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, 0
 605     };
 606     static const vlc_fourcc_t p_I422[] = {
 607         VLC_CODEC_I422, VLC_CODEC_J422, 0
 608     };
 609     static const vlc_fourcc_t p_I440[] = {
 610         VLC_CODEC_I440, VLC_CODEC_J440, 0
 611     };
 612     static const vlc_fourcc_t p_I444[] = {
 613         VLC_CODEC_I444, VLC_CODEC_J444, 0
 614     };
 615     static const vlc_fourcc_t *pp_fcc[] = {
 616         p_I420, p_I422, p_I440, p_I444, NULL
 617     };
 618
 619     /* */
 620     i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, i_chroma );
 621     i_amorhc = vlc_fourcc_GetCodec( VIDEO_ES, i_amorhc );
 622
 623     /* If they are the same, they are the same ! */
 624     if( i_chroma == i_amorhc )
 625         return 1;
 626
 627     /* Check for equivalence classes */
 628     for( int i = 0; pp_fcc[i] != NULL; i++ )
 629     {
 630         bool b_fcc1 = false;
 631         bool b_fcc2 = false;
 632         for( int j = 0; pp_fcc[i][j] != 0; j++ )
 633         {
 634             if( i_chroma == pp_fcc[i][j] )
 635                 b_fcc1 = true;
 636             if( i_amorhc == pp_fcc[i][j] )
 637                 b_fcc2 = true;
 638         }
 639         if( b_fcc1 && b_fcc2 )
 640             return 1;
 641     }
 642     return 0;
 643 }
 644
 645 /*****************************************************************************
 646  *
 647  *****************************************************************************/
 648 static void PictureReleaseCallback( picture_t *p_picture )
 649 {
 650     if( --p_picture->i_refcount > 0 )
 651         return;
 652     picture_Delete( p_picture );
 653 }
 654
 655 /*****************************************************************************
 656  *
 657  *****************************************************************************/
 658 void picture_Reset( picture_t *p_picture )
 659 {
 660     /* */
 661     p_picture->date = VLC_TS_INVALID;
 662     p_picture->b_force = false;
 663     p_picture->b_progressive = false;
 664     p_picture->i_nb_fields = 0;
 665     p_picture->b_top_field_first = false;
 666     picture_CleanupQuant( p_picture );
 667 }
 668
 669 /*****************************************************************************
 670  *
 671  *****************************************************************************/
 672 int picture_Setup( picture_t *p_picture, vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 673 {
 674     int i_index, i_width_aligned, i_height_aligned;
 675
 676     /* Store default values */
 677     for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
 678     {
 679         p_picture->p[i_index].p_pixels = NULL;
 680         p_picture->p[i_index].i_pixel_pitch = 1;
 681     }
 682
 683     p_picture->pf_release = NULL;
 684     p_picture->p_release_sys = NULL;
 685     p_picture->pf_lock = NULL;
 686     p_picture->pf_unlock = NULL;
 687     p_picture->i_refcount = 0;
 688
 689     p_picture->i_qtype = QTYPE_NONE;
 690     p_picture->i_qstride = 0;
 691     p_picture->p_q = NULL;
 692
 693     video_format_Setup( &p_picture->format, i_chroma, i_width, i_height, i_aspect );
 694
 695     /* Make sure the real dimensions are a multiple of 16 */
 696     i_width_aligned = (i_width + 15) >> 4 << 4;
 697     i_height_aligned = (i_height + 15) >> 4 << 4;
 698
 699     /* Calculate coordinates */
 700     switch( vlc_fourcc_GetCodec( VIDEO_ES, i_chroma ) )
 701     {
 702     case VLC_CODEC_I411:
 703         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 704         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 705         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 706         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 707         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 708         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 709         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 710         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 711         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 712         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 713         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 714         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 715         p_picture->i_planes = 3;
 716         break;
 717
 718     case VLC_CODEC_I410:
 719         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 720         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 721         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 722         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 723         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 4;
 724         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 4;
 725         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 726         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 727         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 4;
 728         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 4;
 729         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 730         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 731         p_picture->i_planes = 3;
 732         break;
 733
 734     case VLC_CODEC_YV12:
 735     case VLC_CODEC_I420:
 736     case VLC_CODEC_J420:
 737         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 738         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 739         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 740         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 741         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 742         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 743         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 744         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 745         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 746         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 747         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 748         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 749         p_picture->i_planes = 3;
 750         break;
 751
 752     case VLC_CODEC_I422:
 753     case VLC_CODEC_J422:
 754         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 755         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 756         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 757         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 758         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 759         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 760         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 761         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 762         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 763         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 764         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 765         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 766         p_picture->i_planes = 3;
 767         break;
 768
 769     case VLC_CODEC_I440:
 770     case VLC_CODEC_J440:
 771         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 772         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 773         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 774         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 775         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 776         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 777         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 778         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 779         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 780         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 781         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 782         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 783         p_picture->i_planes = 3;
 784         break;
 785
 786     case VLC_CODEC_I444:
 787     case VLC_CODEC_J444:
 788         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 789         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 790         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 791         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 792         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 793         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 794         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 795         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 796         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 797         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 798         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 799         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 800         p_picture->i_planes = 3;
 801         break;
 802
 803     case VLC_CODEC_YUVA:
 804         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 805         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 806         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 807         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 808         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 809         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 810         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 811         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 812         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 813         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 814         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 815         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 816         p_picture->p[ A_PLANE ].i_lines = i_height_aligned;
 817         p_picture->p[ A_PLANE ].i_visible_lines = i_height;
 818         p_picture->p[ A_PLANE ].i_pitch = i_width_aligned;
 819         p_picture->p[ A_PLANE ].i_visible_pitch = i_width;
 820         p_picture->i_planes = 4;
 821         break;
 822
 823     case VLC_CODEC_YUVP:
 824         p_picture->p->i_lines = i_height_aligned;
 825         p_picture->p->i_visible_lines = i_height;
 826         p_picture->p->i_pitch = i_width_aligned;
 827         p_picture->p->i_visible_pitch = i_width;
 828         p_picture->p->i_pixel_pitch = 8;
 829         p_picture->i_planes = 1;
 830         break;
 831
 832     case VLC_CODEC_Y211:
 833         p_picture->p->i_lines = i_height_aligned;
 834         p_picture->p->i_visible_lines = i_height;
 835         p_picture->p->i_pitch = i_width_aligned;
 836         p_picture->p->i_visible_pitch = i_width;
 837         p_picture->p->i_pixel_pitch = 4;
 838         p_picture->i_planes = 1;
 839         break;
 840
 841     case VLC_CODEC_UYVY:
 842     case VLC_CODEC_VYUY:
 843     case VLC_CODEC_YUYV:
 844     case VLC_CODEC_YVYU:
 845         p_picture->p->i_lines = i_height_aligned;
 846         p_picture->p->i_visible_lines = i_height;
 847         p_picture->p->i_pitch = i_width_aligned * 2;
 848         p_picture->p->i_visible_pitch = i_width * 2;
 849         p_picture->p->i_pixel_pitch = 4;
 850         p_picture->i_planes = 1;
 851         break;
 852
 853     case VLC_CODEC_RGB8:
 854         p_picture->p->i_lines = i_height_aligned;
 855         p_picture->p->i_visible_lines = i_height;
 856         p_picture->p->i_pitch = i_width_aligned;
 857         p_picture->p->i_visible_pitch = i_width;
 858         p_picture->p->i_pixel_pitch = 1;
 859         p_picture->i_planes = 1;
 860         break;
 861
 862     case VLC_CODEC_RGB15:
 863         p_picture->p->i_lines = i_height_aligned;
 864         p_picture->p->i_visible_lines = i_height;
 865         p_picture->p->i_pitch = i_width_aligned * 2;
 866         p_picture->p->i_visible_pitch = i_width * 2;
 867         p_picture->p->i_pixel_pitch = 2;
 868         p_picture->i_planes = 1;
 869         break;
 870
 871     case VLC_CODEC_RGB16:
 872         p_picture->p->i_lines = i_height_aligned;
 873         p_picture->p->i_visible_lines = i_height;
 874         p_picture->p->i_pitch = i_width_aligned * 2;
 875         p_picture->p->i_visible_pitch = i_width * 2;
 876         p_picture->p->i_pixel_pitch = 2;
 877         p_picture->i_planes = 1;
 878         break;
 879
 880     case VLC_CODEC_RGB24:
 881         p_picture->p->i_lines = i_height_aligned;
 882         p_picture->p->i_visible_lines = i_height;
 883         p_picture->p->i_pitch = i_width_aligned * 3;
 884         p_picture->p->i_visible_pitch = i_width * 3;
 885         p_picture->p->i_pixel_pitch = 3;
 886         p_picture->i_planes = 1;
 887         break;
 888
 889     case VLC_CODEC_RGB32:
 890     case VLC_CODEC_RGBA:
 891         p_picture->p->i_lines = i_height_aligned;
 892         p_picture->p->i_visible_lines = i_height;
 893         p_picture->p->i_pitch = i_width_aligned * 4;
 894         p_picture->p->i_visible_pitch = i_width * 4;
 895         p_picture->p->i_pixel_pitch = 4;
 896         p_picture->i_planes = 1;
 897         break;
 898
 899     case VLC_CODEC_GREY:
 900     case VLC_CODEC_RGBP:
 901         p_picture->p->i_lines = i_height_aligned;
 902         p_picture->p->i_visible_lines = i_height;
 903         p_picture->p->i_pitch = i_width_aligned;
 904         p_picture->p->i_visible_pitch = i_width;
 905         p_picture->p->i_pixel_pitch = 1;
 906         p_picture->i_planes = 1;
 907         break;
 908
 909     default:
 910         p_picture->i_planes = 0;
 911         return VLC_EGENERIC;
 912     }
 913
 914     return VLC_SUCCESS;
 915 }
 916
 917 /*****************************************************************************
 918  *
 919  *****************************************************************************/
 920 picture_t *picture_NewFromResource( const video_format_t *p_fmt, const picture_resource_t *p_resource )
 921 {
 922     video_format_t fmt = *p_fmt;
 923
 924     /* It is needed to be sure all informations are filled */
 925     video_format_Setup( &fmt, p_fmt->i_chroma,
 926                               p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
 927
 928     /* */
 929     picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
 930     if( !p_picture )
 931         return NULL;
 932
 933     if( p_resource )
 934     {
 935         if( picture_Setup( p_picture, fmt.i_chroma, fmt.i_width, fmt.i_height, fmt.i_aspect ) )
 936         {
 937             free( p_picture );
 938             return NULL;
 939         }
 940         p_picture->p_sys = p_resource->p_sys;
 941
 942         for( int i = 0; i < p_picture->i_planes; i++ )
 943         {
 944             p_picture->p[i].p_pixels = p_resource->p[i].p_pixels;
 945             p_picture->p[i].i_lines  = p_resource->p[i].i_lines;
 946             p_picture->p[i].i_pitch  = p_resource->p[i].i_pitch;
 947         }
 948     }
 949     else
 950     {
 951         if( __vout_AllocatePicture( NULL, p_picture,
 952                                     fmt.i_chroma, fmt.i_width, fmt.i_height, fmt.i_aspect ) )
 953         {
 954             free( p_picture );
 955             return NULL;
 956         }
 957     }
 958     /* */
 959     p_picture->format = fmt;
 960     p_picture->i_refcount = 1;
 961     p_picture->pf_release = PictureReleaseCallback;
 962     p_picture->i_status = RESERVED_PICTURE;
 963
 964     return p_picture;
 965 }
 966 picture_t *picture_NewFromFormat( const video_format_t *p_fmt )
 967 {
 968     return picture_NewFromResource( p_fmt, NULL );
 969 }
 970 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 971 {
 972     video_format_t fmt;
 973
 974     memset( &fmt, 0, sizeof(fmt) );
 975     video_format_Setup( &fmt, i_chroma, i_width, i_height, i_aspect );
 976
 977     return picture_NewFromFormat( &fmt );
 978 }
 979
 980 /*****************************************************************************
 981  *
 982  *****************************************************************************/
 983 void picture_Delete( picture_t *p_picture )
 984 {
 985     assert( p_picture && p_picture->i_refcount == 0 );
 986     assert( p_picture->p_release_sys == NULL );
 987
 988     free( p_picture->p_q );
 989     free( p_picture->p_data_orig );
 990     free( p_picture->p_sys );
 991     free( p_picture );
 992 }
 993
 994 /*****************************************************************************
 995  *
 996  *****************************************************************************/
 997 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
 998 {
 999     int i;
1000
1001     for( i = 0; i < p_src->i_planes ; i++ )
1002         plane_CopyPixels( p_dst->p+i, p_src->p+i );
1003 }
1004
1005 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
1006 {
1007     const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
1008                                      p_src->i_visible_pitch );
1009     const unsigned i_height = __MIN( p_dst->i_visible_lines,
1010                                      p_src->i_visible_lines );
1011
1012     if( p_src->i_pitch == p_dst->i_pitch )
1013     {
1014         /* There are margins, but with the same width : perfect ! */
1015         vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
1016                     p_src->i_pitch * i_height );
1017     }
1018     else
1019     {
1020         /* We need to proceed line by line */
1021         uint8_t *p_in = p_src->p_pixels;
1022         uint8_t *p_out = p_dst->p_pixels;
1023         int i_line;
1024
1025         assert( p_in );
1026         assert( p_out );
1027
1028         for( i_line = i_height; i_line--; )
1029         {
1030             vlc_memcpy( p_out, p_in, i_width );
1031             p_in += p_src->i_pitch;
1032             p_out += p_dst->i_pitch;
1033         }
1034     }
1035 }
1036
1037 /*****************************************************************************
1038  *
1039  *****************************************************************************/
1040 int picture_Export( vlc_object_t *p_obj,
1041                     block_t **pp_image,
1042                     video_format_t *p_fmt,
1043                     picture_t *p_picture,
1044                     vlc_fourcc_t i_format,
1045                     int i_override_width, int i_override_height )
1046 {
1047     /* */
1048     video_format_t fmt_in = p_picture->format;
1049     if( fmt_in.i_sar_num <= 0 || fmt_in.i_sar_den <= 0 )
1050     {
1051         fmt_in.i_sar_num =
1052         fmt_in.i_sar_den = 1;
1053     }
1054
1055     /* */
1056     video_format_t fmt_out;
1057     memset( &fmt_out, 0, sizeof(fmt_out) );
1058     fmt_out.i_sar_num =
1059     fmt_out.i_sar_den = 1;
1060     fmt_out.i_chroma  = i_format;
1061
1062     /* compute original width/height */
1063     unsigned int i_original_width;
1064     unsigned int i_original_height;
1065     if( fmt_in.i_sar_num >= fmt_in.i_sar_den )
1066     {
1067         i_original_width = fmt_in.i_width * fmt_in.i_sar_num / fmt_in.i_sar_den;
1068         i_original_height = fmt_in.i_height;
1069     }
1070     else
1071     {
1072         i_original_width =  fmt_in.i_width;
1073         i_original_height = fmt_in.i_height * fmt_in.i_sar_den / fmt_in.i_sar_num;
1074     }
1075
1076     /* */
1077     fmt_out.i_width  = ( i_override_width < 0 ) ?
1078                        i_original_width : i_override_width;
1079     fmt_out.i_height = ( i_override_height < 0 ) ?
1080                        i_original_height : i_override_height;
1081
1082     /* scale if only one direction is provided */
1083     if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
1084     {
1085         fmt_out.i_height = fmt_in.i_height * fmt_out.i_width
1086                      * fmt_in.i_sar_den / fmt_in.i_width / fmt_in.i_sar_num;
1087     }
1088     else if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
1089     {
1090         fmt_out.i_width  = fmt_in.i_width * fmt_out.i_height
1091                      * fmt_in.i_sar_num / fmt_in.i_height / fmt_in.i_sar_den;
1092     }
1093
1094     image_handler_t *p_image = image_HandlerCreate( p_obj );
1095
1096     block_t *p_block = image_Write( p_image, p_picture, &fmt_in, &fmt_out );
1097
1098     image_HandlerDelete( p_image );
1099
1100     if( !p_block )
1101         return VLC_EGENERIC;
1102
1103     p_block->i_pts =
1104     p_block->i_dts = p_picture->date;
1105
1106     if( p_fmt )
1107         *p_fmt = fmt_out;
1108     *pp_image = p_block;
1109
1110     return VLC_SUCCESS;
1111 }
1112
1113 /*****************************************************************************
1114  *
1115  *****************************************************************************/
1116 struct picture_fifo_t
1117 {
1118     vlc_mutex_t lock;
1119     picture_t *p_first;
1120     picture_t **pp_last;
1121 };
1122
1123 static void PictureFifoReset( picture_fifo_t *p_fifo )
1124 {
1125     p_fifo->p_first = NULL;
1126     p_fifo->pp_last = &p_fifo->p_first;
1127 }
1128 static void PictureFifoPush( picture_fifo_t *p_fifo, picture_t *p_picture )
1129 {
1130     assert( !p_picture->p_next );
1131     *p_fifo->pp_last = p_picture;
1132     p_fifo->pp_last = &p_picture->p_next;
1133 }
1134 static picture_t *PictureFifoPop( picture_fifo_t *p_fifo )
1135 {
1136     picture_t *p_picture = p_fifo->p_first;
1137
1138     if( p_picture )
1139     {
1140         p_fifo->p_first = p_picture->p_next;
1141         if( !p_fifo->p_first )
1142             p_fifo->pp_last = &p_fifo->p_first;
1143     }
1144     return p_picture;
1145 }
1146
1147 picture_fifo_t *picture_fifo_New(void)
1148 {
1149     picture_fifo_t *p_fifo = malloc( sizeof(*p_fifo) );
1150     if( !p_fifo )
1151         return NULL;
1152
1153     vlc_mutex_init( &p_fifo->lock );
1154     PictureFifoReset( p_fifo );
1155     return p_fifo;
1156 }
1157
1158 void picture_fifo_Push( picture_fifo_t *p_fifo, picture_t *p_picture )
1159 {
1160     vlc_mutex_lock( &p_fifo->lock );
1161     PictureFifoPush( p_fifo, p_picture );
1162     vlc_mutex_unlock( &p_fifo->lock );
1163 }
1164 picture_t *picture_fifo_Pop( picture_fifo_t *p_fifo )
1165 {
1166     vlc_mutex_lock( &p_fifo->lock );
1167     picture_t *p_picture = PictureFifoPop( p_fifo );
1168     vlc_mutex_unlock( &p_fifo->lock );
1169
1170     return p_picture;
1171 }
1172 picture_t *picture_fifo_Peek( picture_fifo_t *p_fifo )
1173 {
1174     vlc_mutex_lock( &p_fifo->lock );
1175     picture_t *p_picture = p_fifo->p_first;
1176     if( p_picture )
1177         picture_Hold( p_picture );
1178     vlc_mutex_unlock( &p_fifo->lock );
1179
1180     return p_picture;
1181 }
1182 void picture_fifo_Flush( picture_fifo_t *p_fifo, mtime_t i_date, bool b_below )
1183 {
1184     picture_t *p_picture;
1185
1186     vlc_mutex_lock( &p_fifo->lock );
1187
1188     p_picture = p_fifo->p_first;
1189     PictureFifoReset( p_fifo );
1190
1191     picture_fifo_t tmp;
1192     PictureFifoReset( &tmp );
1193
1194     while( p_picture )
1195     {
1196         picture_t *p_next = p_picture->p_next;
1197
1198         p_picture->p_next = NULL;
1199         if( (  b_below && p_picture->date <= i_date ) ||
1200             ( !b_below && p_picture->date >= i_date ) )
1201             PictureFifoPush( &tmp, p_picture );
1202         else
1203             PictureFifoPush( p_fifo, p_picture );
1204         p_picture = p_next;
1205     }
1206     vlc_mutex_unlock( &p_fifo->lock );
1207
1208     for( ;; )
1209     {
1210         picture_t *p_picture = PictureFifoPop( &tmp );
1211         if( !p_picture )
1212             break;
1213         picture_Release( p_picture );
1214     }
1215 }
1216 void picture_fifo_OffsetDate( picture_fifo_t *p_fifo, mtime_t i_delta )
1217 {
1218     vlc_mutex_lock( &p_fifo->lock );
1219     for( picture_t *p_picture = p_fifo->p_first; p_picture != NULL; )
1220     {
1221         p_picture->date += i_delta;
1222         p_picture = p_picture->p_next;
1223     }
1224     vlc_mutex_unlock( &p_fifo->lock );
1225 }
1226 void picture_fifo_Delete( picture_fifo_t *p_fifo )
1227 {
1228     picture_fifo_Flush( p_fifo, INT64_MAX, true );
1229     vlc_mutex_destroy( &p_fifo->lock );
1230 }
1231
1232 /*****************************************************************************
1233  *
1234  *****************************************************************************/
1235 struct picture_release_sys_t
1236 {
1237     /* Saved release */
1238     void (*pf_release)( picture_t * );
1239     picture_release_sys_t *p_release_sys;
1240
1241     /* */
1242     int  (*pf_lock)( picture_t * );
1243     void (*pf_unlock)( picture_t * );
1244
1245     /* */
1246     int64_t i_tick;
1247 };
1248
1249 struct picture_pool_t
1250 {
1251     int64_t i_tick;
1252
1253     int i_picture;
1254     picture_t **pp_picture;
1255 };
1256
1257 static void PicturePoolPictureRelease( picture_t * );
1258
1259 picture_pool_t *picture_pool_NewExtended( const picture_pool_configuration_t *cfg )
1260 {
1261     picture_pool_t *p_pool = calloc( 1, sizeof(*p_pool) );
1262     if( !p_pool )
1263         return NULL;
1264
1265     p_pool->i_tick = 1;
1266     p_pool->i_picture = cfg->picture_count;
1267     p_pool->pp_picture = calloc( p_pool->i_picture, sizeof(*p_pool->pp_picture) );
1268     if( !p_pool->pp_picture )
1269     {
1270         free( p_pool );
1271         return NULL;
1272     }
1273
1274     for( int i = 0; i < cfg->picture_count; i++ )
1275     {
1276         picture_t *p_picture = cfg->picture[i];
1277
1278         /* The pool must be the only owner of the picture */
1279         assert( p_picture->i_refcount == 1 );
1280
1281         /* Install the new release callback */
1282         picture_release_sys_t *p_release_sys = malloc( sizeof(*p_release_sys) );
1283         if( !p_release_sys )
1284             abort();
1285         p_release_sys->pf_release    = p_picture->pf_release;
1286         p_release_sys->p_release_sys = p_picture->p_release_sys;
1287         p_release_sys->pf_lock       = cfg->lock;
1288         p_release_sys->pf_unlock     = cfg->unlock;
1289         p_release_sys->i_tick        = 0;
1290
1291         p_picture->i_refcount = 0;
1292         p_picture->pf_release = PicturePoolPictureRelease;
1293         p_picture->p_release_sys = p_release_sys;
1294
1295         /* */
1296         p_pool->pp_picture[i] = p_picture;
1297     }
1298     return p_pool;
1299
1300 }
1301
1302 picture_pool_t *picture_pool_New( int i_picture, picture_t *pp_picture[] )
1303 {
1304     picture_pool_configuration_t cfg;
1305
1306     memset( &cfg, 0, sizeof(cfg) );
1307     cfg.picture_count = i_picture;
1308     cfg.picture       = pp_picture;
1309
1310     return picture_pool_NewExtended( &cfg );
1311 }
1312
1313 picture_pool_t *picture_pool_NewFromFormat( const video_format_t *p_fmt, int i_picture )
1314 {
1315     picture_t *pp_picture[i_picture];
1316
1317     for( int i = 0; i < i_picture; i++ )
1318     {
1319         pp_picture[i] = picture_New( p_fmt->i_chroma,
1320                                      p_fmt->i_width, p_fmt->i_height,
1321                                      p_fmt->i_aspect );
1322         if( !pp_picture[i] )
1323             goto error;
1324     }
1325     picture_pool_t *p_pool = picture_pool_New( i_picture, pp_picture );
1326     if( !p_pool )
1327         goto error;
1328
1329     return p_pool;
1330
1331 error:
1332     for( int i = 0; i < i_picture; i++ )
1333     {
1334         if( !pp_picture[i] )
1335             break;
1336         picture_Release( pp_picture[i] );
1337     }
1338     return NULL;
1339 }
1340
1341 void picture_pool_Delete( picture_pool_t *p_pool )
1342 {
1343     for( int i = 0; i < p_pool->i_picture; i++ )
1344     {
1345         picture_t *p_picture = p_pool->pp_picture[i];
1346         picture_release_sys_t *p_release_sys = p_picture->p_release_sys;
1347
1348         assert( p_picture->i_refcount == 0 );
1349
1350         /* Restore old release callback */
1351         p_picture->i_refcount = 1;
1352         p_picture->pf_release = p_release_sys->pf_release;
1353         p_picture->p_release_sys = p_release_sys->p_release_sys;
1354
1355         picture_Release( p_picture );
1356
1357         free( p_release_sys );
1358     }
1359     free( p_pool->pp_picture );
1360     free( p_pool );
1361 }
1362
1363 picture_t *picture_pool_Get( picture_pool_t *p_pool )
1364 {
1365     for( int i = 0; i < p_pool->i_picture; i++ )
1366     {
1367         picture_t *p_picture = p_pool->pp_picture[i];
1368         if( p_picture->i_refcount > 0 )
1369             continue;
1370
1371         picture_release_sys_t *p_release_sys = p_picture->p_release_sys;
1372         if( p_release_sys->pf_lock && p_release_sys->pf_lock(p_picture) )
1373             continue;
1374
1375         /* */
1376         p_picture->p_release_sys->i_tick = p_pool->i_tick++;
1377         picture_Hold( p_picture );
1378         return p_picture;
1379     }
1380     return NULL;
1381 }
1382
1383 void picture_pool_NonEmpty( picture_pool_t *p_pool, bool b_reset )
1384 {
1385     picture_t *p_old = NULL;
1386
1387     for( int i = 0; i < p_pool->i_picture; i++ )
1388     {
1389         picture_t *p_picture = p_pool->pp_picture[i];
1390
1391         if( b_reset )
1392             p_picture->i_refcount = 0;
1393         else if( p_picture->i_refcount == 0 )
1394             return;
1395         else if( !p_old || p_picture->p_release_sys->i_tick < p_old->p_release_sys->i_tick )
1396             p_old = p_picture;
1397     }
1398     if( !b_reset && p_old )
1399         p_old->i_refcount = 0;
1400 }
1401
1402 static void PicturePoolPictureRelease( picture_t *p_picture )
1403 {
1404     assert( p_picture->i_refcount > 0 );
1405
1406     if( --p_picture->i_refcount > 0 )
1407         return;
1408
1409     picture_release_sys_t *p_release_sys = p_picture->p_release_sys;
1410     if( p_release_sys->pf_unlock )
1411         p_release_sys->pf_unlock( p_picture );
1412 }
1413