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
  42 #include "vout_pictures.h"
  43 #include "vout_internal.h"
  44
  45 /**
  46  * Display a picture
  47  *
  48  * Remove the reservation flag of a picture, which will cause it to be ready
  49  * for display.
  50  */
  51 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
  52 {
  53     vlc_mutex_lock( &p_vout->picture_lock );
  54
  55     if( p_pic->i_status == RESERVED_PICTURE )
  56     {
  57         p_pic->i_status = READY_PICTURE;
  58         vlc_cond_signal( &p_vout->p->picture_wait );
  59     }
  60     else
  61     {
  62         msg_Err( p_vout, "picture to display %p has invalid status %d",
  63                          p_pic, p_pic->i_status );
  64     }
  65     p_vout->p->i_picture_qtype = p_pic->i_qtype;
  66
  67     vlc_mutex_unlock( &p_vout->picture_lock );
  68 }
  69
  70 /**
  71  * Allocate a picture in the video output heap.
  72  *
  73  * This function creates a reserved image in the video output heap.
  74  * A null pointer is returned if the function fails. This method provides an
  75  * already allocated zone of memory in the picture data fields.
  76  * It needs locking since several pictures can be created by several producers
  77  * threads.
  78  */
  79 int vout_CountPictureAvailable( vout_thread_t *p_vout )
  80 {
  81     int i_free = 0;
  82     int i_pic;
  83
  84     vlc_mutex_lock( &p_vout->picture_lock );
  85     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
  86     {
  87         picture_t *p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1) % I_RENDERPICTURES];
  88
  89         switch( p_pic->i_status )
  90         {
  91             case DESTROYED_PICTURE:
  92                 i_free++;
  93                 break;
  94
  95             case FREE_PICTURE:
  96                 i_free++;
  97                 break;
  98
  99             default:
 100                 break;
 101         }
 102     }
 103     vlc_mutex_unlock( &p_vout->picture_lock );
 104
 105     return i_free;
 106 }
 107
 108 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
 109                                bool b_progressive,
 110                                bool b_top_field_first,
 111                                unsigned int i_nb_fields )
 112 {
 113     int         i_pic;                                      /* picture index */
 114     picture_t * p_pic;
 115     picture_t * p_freepic = NULL;                      /* first free picture */
 116
 117     /* Get lock */
 118     vlc_mutex_lock( &p_vout->picture_lock );
 119
 120     /*
 121      * Look for an empty place in the picture heap.
 122      */
 123     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
 124     {
 125         p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
 126                                  % I_RENDERPICTURES];
 127
 128         switch( p_pic->i_status )
 129         {
 130             case DESTROYED_PICTURE:
 131                 /* Memory will not be reallocated, and function can end
 132                  * immediately - this is the best possible case, since no
 133                  * memory allocation needs to be done */
 134                 p_pic->i_status   = RESERVED_PICTURE;
 135                 p_pic->i_refcount = 0;
 136                 p_pic->b_force    = 0;
 137
 138                 p_pic->b_progressive        = b_progressive;
 139                 p_pic->i_nb_fields          = i_nb_fields;
 140                 p_pic->b_top_field_first    = b_top_field_first;
 141
 142                 p_vout->i_heap_size++;
 143                 p_vout->render.i_last_used_pic =
 144                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 145                     % I_RENDERPICTURES;
 146                 vlc_mutex_unlock( &p_vout->picture_lock );
 147                 return( p_pic );
 148
 149             case FREE_PICTURE:
 150                 /* Picture is empty and ready for allocation */
 151                 p_vout->render.i_last_used_pic =
 152                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 153                     % I_RENDERPICTURES;
 154                 p_freepic = p_pic;
 155                 break;
 156
 157             default:
 158                 break;
 159         }
 160     }
 161
 162     /*
 163      * Prepare picture
 164      */
 165     if( p_freepic != NULL )
 166     {
 167         vout_AllocatePicture( VLC_OBJECT(p_vout),
 168                               p_freepic, p_vout->render.i_chroma,
 169                               p_vout->render.i_width, p_vout->render.i_height,
 170                               p_vout->render.i_aspect );
 171
 172         if( p_freepic->i_planes )
 173         {
 174             /* Copy picture information, set some default values */
 175             p_freepic->i_status   = RESERVED_PICTURE;
 176             p_freepic->i_type     = MEMORY_PICTURE;
 177             p_freepic->b_slow     = 0;
 178
 179             p_freepic->i_refcount = 0;
 180             p_freepic->b_force = 0;
 181
 182             p_freepic->b_progressive        = b_progressive;
 183             p_freepic->i_nb_fields          = i_nb_fields;
 184             p_freepic->b_top_field_first    = b_top_field_first;
 185
 186             p_vout->i_heap_size++;
 187         }
 188         else
 189         {
 190             /* Memory allocation failed : set picture as empty */
 191             p_freepic->i_status = FREE_PICTURE;
 192             p_freepic = NULL;
 193
 194             msg_Err( p_vout, "picture allocation failed" );
 195         }
 196
 197         vlc_mutex_unlock( &p_vout->picture_lock );
 198
 199         return( p_freepic );
 200     }
 201
 202     /* No free or destroyed picture could be found, but the decoder
 203      * will try again in a while. */
 204     vlc_mutex_unlock( &p_vout->picture_lock );
 205
 206     return( NULL );
 207 }
 208
 209 /* */
 210 static void DestroyPicture( vout_thread_t *p_vout, picture_t *p_picture )
 211 {
 212     vlc_assert_locked( &p_vout->picture_lock );
 213
 214     p_picture->i_status = DESTROYED_PICTURE;
 215     p_vout->i_heap_size--;
 216     picture_CleanupQuant( p_picture );
 217
 218     vlc_cond_signal( &p_vout->p->picture_wait );
 219 }
 220
 221 /**
 222  * Remove a permanent or reserved picture from the heap
 223  *
 224  * This function frees a previously reserved picture or a permanent
 225  * picture. It is meant to be used when the construction of a picture aborted.
 226  * Note that the picture will be destroyed even if it is linked !
 227  *
 228  * TODO remove it, vout_DropPicture should be used instead
 229  */
 230 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 231 {
 232 #ifndef NDEBUG
 233     /* Check if picture status is valid */
 234     vlc_mutex_lock( &p_vout->picture_lock );
 235     if( p_pic->i_status != RESERVED_PICTURE )
 236     {
 237         msg_Err( p_vout, "picture to destroy %p has invalid status %d",
 238                          p_pic, p_pic->i_status );
 239     }
 240     vlc_mutex_unlock( &p_vout->picture_lock );
 241 #endif
 242
 243     vout_DropPicture( p_vout, p_pic );
 244 }
 245
 246 /* */
 247 void vout_UsePictureLocked( vout_thread_t *p_vout, picture_t *p_picture )
 248 {
 249     vlc_assert_locked( &p_vout->picture_lock );
 250     if( p_picture->i_refcount > 0 )
 251     {
 252         /* Pretend we displayed the picture, but don't destroy
 253          * it since the decoder might still need it. */
 254         p_picture->i_status = DISPLAYED_PICTURE;
 255     }
 256     else
 257     {
 258         /* Destroy the picture without displaying it */
 259         DestroyPicture( p_vout, p_picture );
 260     }
 261 }
 262
 263 /* */
 264 void vout_DropPicture( vout_thread_t *p_vout, picture_t *p_pic  )
 265 {
 266     vlc_mutex_lock( &p_vout->picture_lock );
 267
 268     if( p_pic->i_status == READY_PICTURE )
 269     {
 270         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 271         p_pic->date = 1;
 272         vlc_cond_signal( &p_vout->p->picture_wait );
 273     }
 274     else
 275     {
 276         vout_UsePictureLocked( p_vout, p_pic );
 277     }
 278
 279     vlc_mutex_unlock( &p_vout->picture_lock );
 280 }
 281
 282 /**
 283  * Increment reference counter of a picture
 284  *
 285  * This function increments the reference counter of a picture in the video
 286  * heap. It needs a lock since several producer threads can access the picture.
 287  */
 288 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 289 {
 290     vlc_mutex_lock( &p_vout->picture_lock );
 291     p_pic->i_refcount++;
 292     vlc_mutex_unlock( &p_vout->picture_lock );
 293 }
 294
 295 /**
 296  * Decrement reference counter of a picture
 297  *
 298  * This function decrement the reference counter of a picture in the video heap
 299  */
 300 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 301 {
 302     vlc_mutex_lock( &p_vout->picture_lock );
 303
 304     if( p_pic->i_refcount > 0 )
 305         p_pic->i_refcount--;
 306     else
 307         msg_Err( p_vout, "Invalid picture reference count (%p, %d)",
 308                  p_pic, p_pic->i_refcount );
 309
 310     if( p_pic->i_refcount == 0 && p_pic->i_status == DISPLAYED_PICTURE )
 311         DestroyPicture( p_vout, p_pic );
 312
 313     vlc_mutex_unlock( &p_vout->picture_lock );
 314 }
 315
 316 static int vout_LockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 317 {
 318     if( p_picture->pf_lock )
 319         return p_picture->pf_lock( p_vout, p_picture );
 320     return VLC_SUCCESS;
 321 }
 322 static void vout_UnlockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 323 {
 324     if( p_picture->pf_unlock )
 325         p_picture->pf_unlock( p_vout, p_picture );
 326 }
 327
 328 /**
 329  * Render a picture
 330  *
 331  * This function chooses whether the current picture needs to be copied
 332  * before rendering, does the subpicture magic, and tells the video output
 333  * thread which direct buffer needs to be displayed.
 334  */
 335 picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
 336                                subpicture_t *p_subpic, bool b_paused )
 337 {
 338     if( p_pic == NULL )
 339         return NULL;
 340
 341     if( p_pic->i_type == DIRECT_PICTURE )
 342     {
 343         /* Picture is in a direct buffer. */
 344
 345         if( p_subpic != NULL )
 346         {
 347             /* We have subtitles. First copy the picture to
 348              * the spare direct buffer, then render the
 349              * subtitles. */
 350             if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 351                 return NULL;
 352
 353             picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 354
 355             spu_RenderSubpictures( p_vout->p_spu,
 356                                    PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 357                                    p_subpic, &p_vout->fmt_in, b_paused );
 358
 359             vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 360
 361             return PP_OUTPUTPICTURE[0];
 362         }
 363
 364         /* No subtitles, picture is in a directbuffer so
 365          * we can display it directly (even if it is still
 366          * in use or not). */
 367         return p_pic;
 368     }
 369
 370     /* Not a direct buffer. We either need to copy it to a direct buffer,
 371      * or render it if the chroma isn't the same. */
 372     if( p_vout->p->b_direct )
 373     {
 374         /* Picture is not in a direct buffer, but is exactly the
 375          * same size as the direct buffers. A memcpy() is enough,
 376          * then render the subtitles. */
 377
 378         if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 379             return NULL;
 380
 381         picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 382         spu_RenderSubpictures( p_vout->p_spu,
 383                                PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 384                                p_subpic, &p_vout->fmt_in, b_paused );
 385
 386         vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 387
 388         return PP_OUTPUTPICTURE[0];
 389     }
 390
 391     /* Picture is not in a direct buffer, and needs to be converted to
 392      * another size/chroma. Then the subtitles need to be rendered as
 393      * well. This usually means software YUV, or hardware YUV with a
 394      * different chroma. */
 395
 396     if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
 397     {
 398         /* The picture buffer is in slow memory. We'll use
 399          * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
 400          * one for subpictures rendering. */
 401         picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
 402         if( p_tmp_pic->i_status == FREE_PICTURE )
 403         {
 404             vout_AllocatePicture( VLC_OBJECT(p_vout),
 405                                   p_tmp_pic, p_vout->fmt_out.i_chroma,
 406                                   p_vout->fmt_out.i_width,
 407                                   p_vout->fmt_out.i_height,
 408                                   p_vout->fmt_out.i_aspect );
 409             p_tmp_pic->i_type = MEMORY_PICTURE;
 410             p_tmp_pic->i_status = RESERVED_PICTURE;
 411         }
 412
 413         /* Convert image to the first direct buffer */
 414         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
 415         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 416
 417         /* Render subpictures on the first direct buffer */
 418         spu_RenderSubpictures( p_vout->p_spu,
 419                                p_tmp_pic, &p_vout->fmt_out,
 420                                p_subpic, &p_vout->fmt_in, b_paused );
 421
 422         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 423             return NULL;
 424
 425         picture_Copy( &p_vout->p_picture[0], p_tmp_pic );
 426     }
 427     else
 428     {
 429         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 430             return NULL;
 431
 432         /* Convert image to the first direct buffer */
 433         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)&p_vout->p_picture[0];
 434         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 435
 436         /* Render subpictures on the first direct buffer */
 437         spu_RenderSubpictures( p_vout->p_spu,
 438                                &p_vout->p_picture[0], &p_vout->fmt_out,
 439                                p_subpic, &p_vout->fmt_in, b_paused );
 440     }
 441
 442     vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );
 443
 444     return &p_vout->p_picture[0];
 445 }
 446
 447 /**
 448  * Calculate image window coordinates
 449  *
 450  * This function will be accessed by plugins. It calculates the relative
 451  * position of the output window and the image window.
 452  */
 453 void vout_PlacePicture( const vout_thread_t *p_vout,
 454                         unsigned int i_width, unsigned int i_height,
 455                         unsigned int *restrict pi_x,
 456                         unsigned int *restrict pi_y,
 457                         unsigned int *restrict pi_width,
 458                         unsigned int *restrict pi_height )
 459 {
 460     if( i_width <= 0 || i_height <= 0 )
 461     {
 462         *pi_width = *pi_height = *pi_x = *pi_y = 0;
 463         return;
 464     }
 465
 466     if( p_vout->b_autoscale )
 467     {
 468         *pi_width = i_width;
 469         *pi_height = i_height;
 470     }
 471     else
 472     {
 473         int i_zoom = p_vout->i_zoom;
 474         /* be realistic, scaling factor confined between .2 and 10. */
 475         if( i_zoom > 10 * ZOOM_FP_FACTOR )      i_zoom = 10 * ZOOM_FP_FACTOR;
 476         else if( i_zoom <  ZOOM_FP_FACTOR / 5 ) i_zoom = ZOOM_FP_FACTOR / 5;
 477
 478         unsigned int i_original_width, i_original_height;
 479
 480         if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 481         {
 482             i_original_width = p_vout->fmt_in.i_visible_width *
 483                                p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den;
 484             i_original_height =  p_vout->fmt_in.i_visible_height;
 485         }
 486         else
 487         {
 488             i_original_width =  p_vout->fmt_in.i_visible_width;
 489             i_original_height = p_vout->fmt_in.i_visible_height *
 490                                 p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num;
 491         }
 492 #ifdef WIN32
 493         /* On windows, inner video window exceeding container leads to black screen */
 494         *pi_width = __MIN( i_width, i_original_width * i_zoom / ZOOM_FP_FACTOR );
 495         *pi_height = __MIN( i_height, i_original_height * i_zoom / ZOOM_FP_FACTOR );
 496 #else
 497         *pi_width = i_original_width * i_zoom / ZOOM_FP_FACTOR ;
 498         *pi_height = i_original_height * i_zoom / ZOOM_FP_FACTOR ;
 499 #endif
 500     }
 501
 502     int64_t i_scaled_width = p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
 503                               *pi_height / p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
 504     int64_t i_scaled_height = p_vout->fmt_in.i_visible_height * (int64_t)p_vout->fmt_in.i_sar_den *
 505                                *pi_width / p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
 506
 507     if( i_scaled_width <= 0 || i_scaled_height <= 0 )
 508     {
 509         msg_Warn( p_vout, "ignoring broken aspect ratio" );
 510         i_scaled_width = *pi_width;
 511         i_scaled_height = *pi_height;
 512     }
 513
 514     if( i_scaled_width > *pi_width )
 515         *pi_height = i_scaled_height;
 516     else
 517         *pi_width = i_scaled_width;
 518
 519     switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
 520     {
 521     case VOUT_ALIGN_LEFT:
 522         *pi_x = 0;
 523         break;
 524     case VOUT_ALIGN_RIGHT:
 525         *pi_x = i_width - *pi_width;
 526         break;
 527     default:
 528         *pi_x = ( i_width - *pi_width ) / 2;
 529     }
 530
 531     switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
 532     {
 533     case VOUT_ALIGN_TOP:
 534         *pi_y = 0;
 535         break;
 536     case VOUT_ALIGN_BOTTOM:
 537         *pi_y = i_height - *pi_height;
 538         break;
 539     default:
 540         *pi_y = ( i_height - *pi_height ) / 2;
 541     }
 542 }
 543
 544 /**
 545  * Allocate a new picture in the heap.
 546  *
 547  * This function allocates a fake direct buffer in memory, which can be
 548  * used exactly like a video buffer. The video output thread then manages
 549  * how it gets displayed.
 550  */
 551 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
 552                             vlc_fourcc_t i_chroma,
 553                             int i_width, int i_height, int i_aspect )
 554 {
 555     int i_bytes, i_index, i_width_aligned, i_height_aligned;
 556
 557     /* Make sure the real dimensions are a multiple of 16 */
 558     i_width_aligned = (i_width + 15) >> 4 << 4;
 559     i_height_aligned = (i_height + 15) >> 4 << 4;
 560
 561     if( picture_Setup( p_pic, i_chroma,
 562                        i_width, i_height, i_aspect ) != VLC_SUCCESS )
 563     {
 564         p_pic->i_planes = 0;
 565         return VLC_EGENERIC;
 566     }
 567
 568     /* Calculate how big the new image should be */
 569     i_bytes = p_pic->format.i_bits_per_pixel *
 570         i_width_aligned * i_height_aligned / 8;
 571
 572     p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
 573
 574     if( p_pic->p_data == NULL )
 575     {
 576         p_pic->i_planes = 0;
 577         return VLC_EGENERIC;
 578     }
 579
 580     /* Fill the p_pixels field for each plane */
 581     p_pic->p[ 0 ].p_pixels = p_pic->p_data;
 582
 583     for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
 584     {
 585         p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
 586             p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
 587     }
 588
 589     return VLC_SUCCESS;
 590 }
 591
 592 /**
 593  * Compare two chroma values
 594  *
 595  * This function returns 1 if the two fourcc values given as argument are
 596  * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
 597  */
 598 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
 599 {
 600     static const vlc_fourcc_t p_I420[] = {
 601         VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, 0
 602     };
 603     static const vlc_fourcc_t p_I422[] = {
 604         VLC_CODEC_I422, VLC_CODEC_J422, 0
 605     };
 606     static const vlc_fourcc_t p_I440[] = {
 607         VLC_CODEC_I440, VLC_CODEC_J440, 0
 608     };
 609     static const vlc_fourcc_t p_I444[] = {
 610         VLC_CODEC_I444, VLC_CODEC_J444, 0
 611     };
 612     static const vlc_fourcc_t *pp_fcc[] = {
 613         p_I420, p_I422, p_I440, p_I444, NULL
 614     };
 615
 616     /* */
 617     i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, i_chroma );
 618     i_amorhc = vlc_fourcc_GetCodec( VIDEO_ES, i_amorhc );
 619
 620     /* If they are the same, they are the same ! */
 621     if( i_chroma == i_amorhc )
 622         return 1;
 623
 624     /* Check for equivalence classes */
 625     for( int i = 0; pp_fcc[i] != NULL; i++ )
 626     {
 627         bool b_fcc1 = false;
 628         bool b_fcc2 = false;
 629         for( int j = 0; pp_fcc[i][j] != 0; j++ )
 630         {
 631             if( i_chroma == pp_fcc[i][j] )
 632                 b_fcc1 = true;
 633             if( i_amorhc == pp_fcc[i][j] )
 634                 b_fcc2 = true;
 635         }
 636         if( b_fcc1 && b_fcc2 )
 637             return 1;
 638     }
 639     return 0;
 640 }
 641
 642 /*****************************************************************************
 643  *
 644  *****************************************************************************/
 645 static void PictureReleaseCallback( picture_t *p_picture )
 646 {
 647     if( --p_picture->i_refcount > 0 )
 648         return;
 649     picture_Delete( p_picture );
 650 }
 651
 652 /*****************************************************************************
 653  *
 654  *****************************************************************************/
 655 void picture_Reset( picture_t *p_picture )
 656 {
 657     /* */
 658     p_picture->date = VLC_TS_INVALID;
 659     p_picture->b_force = false;
 660     p_picture->b_progressive = false;
 661     p_picture->i_nb_fields = 0;
 662     p_picture->b_top_field_first = false;
 663     picture_CleanupQuant( p_picture );
 664 }
 665
 666 /*****************************************************************************
 667  *
 668  *****************************************************************************/
 669 int picture_Setup( picture_t *p_picture, vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 670 {
 671     int i_index, i_width_aligned, i_height_aligned;
 672
 673     /* Store default values */
 674     for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
 675     {
 676         p_picture->p[i_index].p_pixels = NULL;
 677         p_picture->p[i_index].i_pixel_pitch = 1;
 678     }
 679
 680     p_picture->pf_release = NULL;
 681     p_picture->p_release_sys = NULL;
 682     p_picture->pf_lock = NULL;
 683     p_picture->pf_unlock = NULL;
 684     p_picture->i_refcount = 0;
 685
 686     p_picture->i_qtype = QTYPE_NONE;
 687     p_picture->i_qstride = 0;
 688     p_picture->p_q = NULL;
 689
 690     video_format_Setup( &p_picture->format, i_chroma, i_width, i_height, i_aspect );
 691
 692     /* Make sure the real dimensions are a multiple of 16 */
 693     i_width_aligned = (i_width + 15) >> 4 << 4;
 694     i_height_aligned = (i_height + 15) >> 4 << 4;
 695
 696     /* Calculate coordinates */
 697     switch( vlc_fourcc_GetCodec( VIDEO_ES, i_chroma ) )
 698     {
 699     case VLC_CODEC_I411:
 700         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 701         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 702         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 703         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 704         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 705         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 706         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 707         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 708         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 709         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 710         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 711         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 712         p_picture->i_planes = 3;
 713         break;
 714
 715     case VLC_CODEC_I410:
 716         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 717         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 718         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 719         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 720         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 4;
 721         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 4;
 722         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 723         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 724         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 4;
 725         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 4;
 726         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 727         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 728         p_picture->i_planes = 3;
 729         break;
 730
 731     case VLC_CODEC_YV12:
 732     case VLC_CODEC_I420:
 733     case VLC_CODEC_J420:
 734         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 735         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 736         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 737         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 738         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 739         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 740         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 741         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 742         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 743         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 744         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 745         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 746         p_picture->i_planes = 3;
 747         break;
 748
 749     case VLC_CODEC_I422:
 750     case VLC_CODEC_J422:
 751         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 752         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 753         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 754         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 755         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 756         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 757         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 758         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 759         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 760         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 761         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 762         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 763         p_picture->i_planes = 3;
 764         break;
 765
 766     case VLC_CODEC_I440:
 767     case VLC_CODEC_J440:
 768         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 769         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 770         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 771         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 772         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 773         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 774         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 775         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 776         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 777         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 778         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 779         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 780         p_picture->i_planes = 3;
 781         break;
 782
 783     case VLC_CODEC_I444:
 784     case VLC_CODEC_J444:
 785         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 786         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 787         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 788         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 789         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 790         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 791         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 792         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 793         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 794         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 795         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 796         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 797         p_picture->i_planes = 3;
 798         break;
 799
 800     case VLC_CODEC_YUVA:
 801         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 802         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 803         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 804         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 805         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 806         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 807         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 808         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 809         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 810         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 811         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 812         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 813         p_picture->p[ A_PLANE ].i_lines = i_height_aligned;
 814         p_picture->p[ A_PLANE ].i_visible_lines = i_height;
 815         p_picture->p[ A_PLANE ].i_pitch = i_width_aligned;
 816         p_picture->p[ A_PLANE ].i_visible_pitch = i_width;
 817         p_picture->i_planes = 4;
 818         break;
 819
 820     case VLC_CODEC_YUVP:
 821         p_picture->p->i_lines = i_height_aligned;
 822         p_picture->p->i_visible_lines = i_height;
 823         p_picture->p->i_pitch = i_width_aligned;
 824         p_picture->p->i_visible_pitch = i_width;
 825         p_picture->p->i_pixel_pitch = 8;
 826         p_picture->i_planes = 1;
 827         break;
 828
 829     case VLC_CODEC_Y211:
 830         p_picture->p->i_lines = i_height_aligned;
 831         p_picture->p->i_visible_lines = i_height;
 832         p_picture->p->i_pitch = i_width_aligned;
 833         p_picture->p->i_visible_pitch = i_width;
 834         p_picture->p->i_pixel_pitch = 4;
 835         p_picture->i_planes = 1;
 836         break;
 837
 838     case VLC_CODEC_UYVY:
 839     case VLC_CODEC_VYUY:
 840     case VLC_CODEC_YUYV:
 841     case VLC_CODEC_YVYU:
 842         p_picture->p->i_lines = i_height_aligned;
 843         p_picture->p->i_visible_lines = i_height;
 844         p_picture->p->i_pitch = i_width_aligned * 2;
 845         p_picture->p->i_visible_pitch = i_width * 2;
 846         p_picture->p->i_pixel_pitch = 4;
 847         p_picture->i_planes = 1;
 848         break;
 849
 850     case VLC_CODEC_RGB8:
 851         p_picture->p->i_lines = i_height_aligned;
 852         p_picture->p->i_visible_lines = i_height;
 853         p_picture->p->i_pitch = i_width_aligned;
 854         p_picture->p->i_visible_pitch = i_width;
 855         p_picture->p->i_pixel_pitch = 1;
 856         p_picture->i_planes = 1;
 857         break;
 858
 859     case VLC_CODEC_RGB15:
 860         p_picture->p->i_lines = i_height_aligned;
 861         p_picture->p->i_visible_lines = i_height;
 862         p_picture->p->i_pitch = i_width_aligned * 2;
 863         p_picture->p->i_visible_pitch = i_width * 2;
 864         p_picture->p->i_pixel_pitch = 2;
 865         p_picture->i_planes = 1;
 866         break;
 867
 868     case VLC_CODEC_RGB16:
 869         p_picture->p->i_lines = i_height_aligned;
 870         p_picture->p->i_visible_lines = i_height;
 871         p_picture->p->i_pitch = i_width_aligned * 2;
 872         p_picture->p->i_visible_pitch = i_width * 2;
 873         p_picture->p->i_pixel_pitch = 2;
 874         p_picture->i_planes = 1;
 875         break;
 876
 877     case VLC_CODEC_RGB24:
 878         p_picture->p->i_lines = i_height_aligned;
 879         p_picture->p->i_visible_lines = i_height;
 880         p_picture->p->i_pitch = i_width_aligned * 3;
 881         p_picture->p->i_visible_pitch = i_width * 3;
 882         p_picture->p->i_pixel_pitch = 3;
 883         p_picture->i_planes = 1;
 884         break;
 885
 886     case VLC_CODEC_RGB32:
 887     case VLC_CODEC_RGBA:
 888         p_picture->p->i_lines = i_height_aligned;
 889         p_picture->p->i_visible_lines = i_height;
 890         p_picture->p->i_pitch = i_width_aligned * 4;
 891         p_picture->p->i_visible_pitch = i_width * 4;
 892         p_picture->p->i_pixel_pitch = 4;
 893         p_picture->i_planes = 1;
 894         break;
 895
 896     case VLC_CODEC_GREY:
 897     case VLC_CODEC_RGBP:
 898         p_picture->p->i_lines = i_height_aligned;
 899         p_picture->p->i_visible_lines = i_height;
 900         p_picture->p->i_pitch = i_width_aligned;
 901         p_picture->p->i_visible_pitch = i_width;
 902         p_picture->p->i_pixel_pitch = 1;
 903         p_picture->i_planes = 1;
 904         break;
 905
 906     default:
 907         p_picture->i_planes = 0;
 908         return VLC_EGENERIC;
 909     }
 910
 911     return VLC_SUCCESS;
 912 }
 913
 914 /*****************************************************************************
 915  *
 916  *****************************************************************************/
 917 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 918 {
 919     picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
 920     if( !p_picture )
 921         return NULL;
 922
 923     if( __vout_AllocatePicture( NULL, p_picture,
 924                                 i_chroma, i_width, i_height, i_aspect ) )
 925     {
 926         free( p_picture );
 927         return NULL;
 928     }
 929
 930     p_picture->i_refcount = 1;
 931     p_picture->pf_release = PictureReleaseCallback;
 932     p_picture->i_status = RESERVED_PICTURE;
 933
 934     return p_picture;
 935 }
 936
 937 /*****************************************************************************
 938  *
 939  *****************************************************************************/
 940 void picture_Delete( picture_t *p_picture )
 941 {
 942     assert( p_picture && p_picture->i_refcount == 0 );
 943     assert( p_picture->p_release_sys == NULL );
 944
 945     free( p_picture->p_q );
 946     free( p_picture->p_data_orig );
 947     free( p_picture->p_sys );
 948     free( p_picture );
 949 }
 950
 951 /*****************************************************************************
 952  *
 953  *****************************************************************************/
 954 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
 955 {
 956     int i;
 957
 958     for( i = 0; i < p_src->i_planes ; i++ )
 959         plane_CopyPixels( p_dst->p+i, p_src->p+i );
 960 }
 961
 962 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
 963 {
 964     const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
 965                                      p_src->i_visible_pitch );
 966     const unsigned i_height = __MIN( p_dst->i_visible_lines,
 967                                      p_src->i_visible_lines );
 968
 969     if( p_src->i_pitch == p_dst->i_pitch )
 970     {
 971         /* There are margins, but with the same width : perfect ! */
 972         vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
 973                     p_src->i_pitch * i_height );
 974     }
 975     else
 976     {
 977         /* We need to proceed line by line */
 978         uint8_t *p_in = p_src->p_pixels;
 979         uint8_t *p_out = p_dst->p_pixels;
 980         int i_line;
 981
 982         assert( p_in );
 983         assert( p_out );
 984
 985         for( i_line = i_height; i_line--; )
 986         {
 987             vlc_memcpy( p_out, p_in, i_width );
 988             p_in += p_src->i_pitch;
 989             p_out += p_dst->i_pitch;
 990         }
 991     }
 992 }
 993
 994 /*****************************************************************************
 995  *
 996  *****************************************************************************/
 997 int picture_Export( vlc_object_t *p_obj,
 998                     block_t **pp_image,
 999                     video_format_t *p_fmt,
1000                     picture_t *p_picture,
1001                     vlc_fourcc_t i_format,
1002                     int i_override_width, int i_override_height )
1003 {
1004     /* */
1005     video_format_t fmt_in = p_picture->format;
1006     if( fmt_in.i_sar_num <= 0 || fmt_in.i_sar_den <= 0 )
1007     {
1008         fmt_in.i_sar_num =
1009         fmt_in.i_sar_den = 1;
1010     }
1011
1012     /* */
1013     video_format_t fmt_out;
1014     memset( &fmt_out, 0, sizeof(fmt_out) );
1015     fmt_out.i_sar_num =
1016     fmt_out.i_sar_den = 1;
1017     fmt_out.i_chroma  = i_format;
1018
1019     /* compute original width/height */
1020     unsigned int i_original_width;
1021     unsigned int i_original_height;
1022     if( fmt_in.i_sar_num >= fmt_in.i_sar_den )
1023     {
1024         i_original_width = fmt_in.i_width * fmt_in.i_sar_num / fmt_in.i_sar_den;
1025         i_original_height = fmt_in.i_height;
1026     }
1027     else
1028     {
1029         i_original_width =  fmt_in.i_width;
1030         i_original_height = fmt_in.i_height * fmt_in.i_sar_den / fmt_in.i_sar_num;
1031     }
1032
1033     /* */
1034     fmt_out.i_width  = ( i_override_width < 0 ) ?
1035                        i_original_width : i_override_width;
1036     fmt_out.i_height = ( i_override_height < 0 ) ?
1037                        i_original_height : i_override_height;
1038
1039     /* scale if only one direction is provided */
1040     if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
1041     {
1042         fmt_out.i_height = fmt_in.i_height * fmt_out.i_width
1043                      * fmt_in.i_sar_den / fmt_in.i_width / fmt_in.i_sar_num;
1044     }
1045     else if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
1046     {
1047         fmt_out.i_width  = fmt_in.i_width * fmt_out.i_height
1048                      * fmt_in.i_sar_num / fmt_in.i_height / fmt_in.i_sar_den;
1049     }
1050
1051     image_handler_t *p_image = image_HandlerCreate( p_obj );
1052
1053     block_t *p_block = image_Write( p_image, p_picture, &fmt_in, &fmt_out );
1054
1055     image_HandlerDelete( p_image );
1056
1057     if( !p_block )
1058         return VLC_EGENERIC;
1059
1060     p_block->i_pts =
1061     p_block->i_dts = p_picture->date;
1062
1063     if( p_fmt )
1064         *p_fmt = fmt_out;
1065     *pp_image = p_block;
1066
1067     return VLC_SUCCESS;
1068 }
1069
1070 /*****************************************************************************
1071  *
1072  *****************************************************************************/