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             /* some modules (such as blend)  needs to know the extra information in picture heap */
 412             p_tmp_pic->p_heap = &p_vout->output;
 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, b_paused );
 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, b_paused );
 442     }
 443
 444     vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );
 445
 446     return &p_vout->p_picture[0];
 447 }
 448
 449 /**
 450  * Calculate image window coordinates
 451  *
 452  * This function will be accessed by plugins. It calculates the relative
 453  * position of the output window and the image window.
 454  */
 455 void vout_PlacePicture( const vout_thread_t *p_vout,
 456                         unsigned int i_width, unsigned int i_height,
 457                         unsigned int *restrict pi_x,
 458                         unsigned int *restrict pi_y,
 459                         unsigned int *restrict pi_width,
 460                         unsigned int *restrict pi_height )
 461 {
 462     if( i_width <= 0 || i_height <= 0 )
 463     {
 464         *pi_width = *pi_height = *pi_x = *pi_y = 0;
 465         return;
 466     }
 467
 468     if( p_vout->b_autoscale )
 469     {
 470         *pi_width = i_width;
 471         *pi_height = i_height;
 472     }
 473     else
 474     {
 475         int i_zoom = p_vout->i_zoom;
 476         /* be realistic, scaling factor confined between .2 and 10. */
 477         if( i_zoom > 10 * ZOOM_FP_FACTOR )      i_zoom = 10 * ZOOM_FP_FACTOR;
 478         else if( i_zoom <  ZOOM_FP_FACTOR / 5 ) i_zoom = ZOOM_FP_FACTOR / 5;
 479
 480         unsigned int i_original_width, i_original_height;
 481
 482         if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 483         {
 484             i_original_width = p_vout->fmt_in.i_visible_width *
 485                                p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den;
 486             i_original_height =  p_vout->fmt_in.i_visible_height;
 487         }
 488         else
 489         {
 490             i_original_width =  p_vout->fmt_in.i_visible_width;
 491             i_original_height = p_vout->fmt_in.i_visible_height *
 492                                 p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num;
 493         }
 494 #ifdef WIN32
 495         /* On windows, inner video window exceeding container leads to black screen */
 496         *pi_width = __MIN( i_width, i_original_width * i_zoom / ZOOM_FP_FACTOR );
 497         *pi_height = __MIN( i_height, i_original_height * i_zoom / ZOOM_FP_FACTOR );
 498 #else
 499         *pi_width = i_original_width * i_zoom / ZOOM_FP_FACTOR ;
 500         *pi_height = i_original_height * i_zoom / ZOOM_FP_FACTOR ;
 501 #endif
 502     }
 503
 504     int64_t i_scaled_width = p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
 505                               *pi_height / p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
 506     int64_t i_scaled_height = p_vout->fmt_in.i_visible_height * (int64_t)p_vout->fmt_in.i_sar_den *
 507                                *pi_width / p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
 508
 509     if( i_scaled_width <= 0 || i_scaled_height <= 0 )
 510     {
 511         msg_Warn( p_vout, "ignoring broken aspect ratio" );
 512         i_scaled_width = *pi_width;
 513         i_scaled_height = *pi_height;
 514     }
 515
 516     if( i_scaled_width > *pi_width )
 517         *pi_height = i_scaled_height;
 518     else
 519         *pi_width = i_scaled_width;
 520
 521     switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
 522     {
 523     case VOUT_ALIGN_LEFT:
 524         *pi_x = 0;
 525         break;
 526     case VOUT_ALIGN_RIGHT:
 527         *pi_x = i_width - *pi_width;
 528         break;
 529     default:
 530         *pi_x = ( i_width - *pi_width ) / 2;
 531     }
 532
 533     switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
 534     {
 535     case VOUT_ALIGN_TOP:
 536         *pi_y = 0;
 537         break;
 538     case VOUT_ALIGN_BOTTOM:
 539         *pi_y = i_height - *pi_height;
 540         break;
 541     default:
 542         *pi_y = ( i_height - *pi_height ) / 2;
 543     }
 544 }
 545
 546 /**
 547  * Allocate a new picture in the heap.
 548  *
 549  * This function allocates a fake direct buffer in memory, which can be
 550  * used exactly like a video buffer. The video output thread then manages
 551  * how it gets displayed.
 552  */
 553 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
 554                             vlc_fourcc_t i_chroma,
 555                             int i_width, int i_height, int i_aspect )
 556 {
 557     int i_bytes, i_index, i_width_aligned, i_height_aligned;
 558
 559     /* Make sure the real dimensions are a multiple of 16 */
 560     i_width_aligned = (i_width + 15) >> 4 << 4;
 561     i_height_aligned = (i_height + 15) >> 4 << 4;
 562
 563     if( picture_Setup( p_pic, i_chroma,
 564                        i_width, i_height, i_aspect ) != VLC_SUCCESS )
 565     {
 566         p_pic->i_planes = 0;
 567         return VLC_EGENERIC;
 568     }
 569
 570     /* Calculate how big the new image should be */
 571     i_bytes = p_pic->format.i_bits_per_pixel *
 572         i_width_aligned * i_height_aligned / 8;
 573
 574     p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
 575
 576     if( p_pic->p_data == NULL )
 577     {
 578         p_pic->i_planes = 0;
 579         return VLC_EGENERIC;
 580     }
 581
 582     /* Fill the p_pixels field for each plane */
 583     p_pic->p[ 0 ].p_pixels = p_pic->p_data;
 584
 585     for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
 586     {
 587         p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
 588             p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
 589     }
 590
 591     return VLC_SUCCESS;
 592 }
 593
 594 /**
 595  * Compare two chroma values
 596  *
 597  * This function returns 1 if the two fourcc values given as argument are
 598  * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
 599  */
 600 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
 601 {
 602     static const vlc_fourcc_t p_I420[] = {
 603         VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, 0
 604     };
 605     static const vlc_fourcc_t p_I422[] = {
 606         VLC_CODEC_I422, VLC_CODEC_J422, 0
 607     };
 608     static const vlc_fourcc_t p_I440[] = {
 609         VLC_CODEC_I440, VLC_CODEC_J440, 0
 610     };
 611     static const vlc_fourcc_t p_I444[] = {
 612         VLC_CODEC_I444, VLC_CODEC_J444, 0
 613     };
 614     static const vlc_fourcc_t *pp_fcc[] = {
 615         p_I420, p_I422, p_I440, p_I444, NULL
 616     };
 617
 618     /* */
 619     i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, i_chroma );
 620     i_amorhc = vlc_fourcc_GetCodec( VIDEO_ES, i_amorhc );
 621
 622     /* If they are the same, they are the same ! */
 623     if( i_chroma == i_amorhc )
 624         return 1;
 625
 626     /* Check for equivalence classes */
 627     for( int i = 0; pp_fcc[i] != NULL; i++ )
 628     {
 629         bool b_fcc1 = false;
 630         bool b_fcc2 = false;
 631         for( int j = 0; pp_fcc[i][j] != 0; j++ )
 632         {
 633             if( i_chroma == pp_fcc[i][j] )
 634                 b_fcc1 = true;
 635             if( i_amorhc == pp_fcc[i][j] )
 636                 b_fcc2 = true;
 637         }
 638         if( b_fcc1 && b_fcc2 )
 639             return 1;
 640     }
 641     return 0;
 642 }
 643
 644 /*****************************************************************************
 645  *
 646  *****************************************************************************/
 647 static void PictureReleaseCallback( picture_t *p_picture )
 648 {
 649     if( --p_picture->i_refcount > 0 )
 650         return;
 651     picture_Delete( p_picture );
 652 }
 653
 654 /*****************************************************************************
 655  *
 656  *****************************************************************************/
 657 int picture_Setup( picture_t *p_picture, vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 658 {
 659     int i_index, i_width_aligned, i_height_aligned;
 660
 661     /* Store default values */
 662     for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
 663     {
 664         p_picture->p[i_index].p_pixels = NULL;
 665         p_picture->p[i_index].i_pixel_pitch = 1;
 666     }
 667
 668     p_picture->pf_release = NULL;
 669     p_picture->pf_lock = NULL;
 670     p_picture->pf_unlock = NULL;
 671     p_picture->i_refcount = 0;
 672
 673     p_picture->i_qtype = QTYPE_NONE;
 674     p_picture->i_qstride = 0;
 675     p_picture->p_q = NULL;
 676
 677     video_format_Setup( &p_picture->format, i_chroma, i_width, i_height, i_aspect );
 678
 679     /* Make sure the real dimensions are a multiple of 16 */
 680     i_width_aligned = (i_width + 15) >> 4 << 4;
 681     i_height_aligned = (i_height + 15) >> 4 << 4;
 682
 683     /* Calculate coordinates */
 684     switch( vlc_fourcc_GetCodec( VIDEO_ES, i_chroma ) )
 685     {
 686     case VLC_CODEC_I411:
 687         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 688         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 689         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 690         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 691         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 692         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 693         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 694         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 695         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 696         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 697         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 698         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 699         p_picture->i_planes = 3;
 700         break;
 701
 702     case VLC_CODEC_I410:
 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 / 4;
 708         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 4;
 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 / 4;
 712         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 4;
 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_YV12:
 719     case VLC_CODEC_I420:
 720     case VLC_CODEC_J420:
 721         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 722         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 723         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 724         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 725         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 726         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 727         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 728         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 729         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 730         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 731         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 732         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 733         p_picture->i_planes = 3;
 734         break;
 735
 736     case VLC_CODEC_I422:
 737     case VLC_CODEC_J422:
 738         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 739         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 740         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 741         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 742         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 743         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 744         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 745         p_picture->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 746         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 747         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 748         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 749         p_picture->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 750         p_picture->i_planes = 3;
 751         break;
 752
 753     case VLC_CODEC_I440:
 754     case VLC_CODEC_J440:
 755         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 756         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 757         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 758         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 759         p_picture->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 760         p_picture->p[ U_PLANE ].i_visible_lines = i_height / 2;
 761         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 762         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 763         p_picture->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 764         p_picture->p[ V_PLANE ].i_visible_lines = i_height / 2;
 765         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 766         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 767         p_picture->i_planes = 3;
 768         break;
 769
 770     case VLC_CODEC_I444:
 771     case VLC_CODEC_J444:
 772         p_picture->p[ Y_PLANE ].i_lines = i_height_aligned;
 773         p_picture->p[ Y_PLANE ].i_visible_lines = i_height;
 774         p_picture->p[ Y_PLANE ].i_pitch = i_width_aligned;
 775         p_picture->p[ Y_PLANE ].i_visible_pitch = i_width;
 776         p_picture->p[ U_PLANE ].i_lines = i_height_aligned;
 777         p_picture->p[ U_PLANE ].i_visible_lines = i_height;
 778         p_picture->p[ U_PLANE ].i_pitch = i_width_aligned;
 779         p_picture->p[ U_PLANE ].i_visible_pitch = i_width;
 780         p_picture->p[ V_PLANE ].i_lines = i_height_aligned;
 781         p_picture->p[ V_PLANE ].i_visible_lines = i_height;
 782         p_picture->p[ V_PLANE ].i_pitch = i_width_aligned;
 783         p_picture->p[ V_PLANE ].i_visible_pitch = i_width;
 784         p_picture->i_planes = 3;
 785         break;
 786
 787     case VLC_CODEC_YUVA:
 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->p[ A_PLANE ].i_lines = i_height_aligned;
 801         p_picture->p[ A_PLANE ].i_visible_lines = i_height;
 802         p_picture->p[ A_PLANE ].i_pitch = i_width_aligned;
 803         p_picture->p[ A_PLANE ].i_visible_pitch = i_width;
 804         p_picture->i_planes = 4;
 805         break;
 806
 807     case VLC_CODEC_YUVP:
 808         p_picture->p->i_lines = i_height_aligned;
 809         p_picture->p->i_visible_lines = i_height;
 810         p_picture->p->i_pitch = i_width_aligned;
 811         p_picture->p->i_visible_pitch = i_width;
 812         p_picture->p->i_pixel_pitch = 8;
 813         p_picture->i_planes = 1;
 814         break;
 815
 816     case VLC_CODEC_Y211:
 817         p_picture->p->i_lines = i_height_aligned;
 818         p_picture->p->i_visible_lines = i_height;
 819         p_picture->p->i_pitch = i_width_aligned;
 820         p_picture->p->i_visible_pitch = i_width;
 821         p_picture->p->i_pixel_pitch = 4;
 822         p_picture->i_planes = 1;
 823         break;
 824
 825     case VLC_CODEC_UYVY:
 826     case VLC_CODEC_VYUY:
 827     case VLC_CODEC_YUYV:
 828     case VLC_CODEC_YVYU:
 829         p_picture->p->i_lines = i_height_aligned;
 830         p_picture->p->i_visible_lines = i_height;
 831         p_picture->p->i_pitch = i_width_aligned * 2;
 832         p_picture->p->i_visible_pitch = i_width * 2;
 833         p_picture->p->i_pixel_pitch = 4;
 834         p_picture->i_planes = 1;
 835         break;
 836
 837     case VLC_CODEC_RGB8:
 838         p_picture->p->i_lines = i_height_aligned;
 839         p_picture->p->i_visible_lines = i_height;
 840         p_picture->p->i_pitch = i_width_aligned;
 841         p_picture->p->i_visible_pitch = i_width;
 842         p_picture->p->i_pixel_pitch = 1;
 843         p_picture->i_planes = 1;
 844         break;
 845
 846     case VLC_CODEC_RGB15:
 847         p_picture->p->i_lines = i_height_aligned;
 848         p_picture->p->i_visible_lines = i_height;
 849         p_picture->p->i_pitch = i_width_aligned * 2;
 850         p_picture->p->i_visible_pitch = i_width * 2;
 851         p_picture->p->i_pixel_pitch = 2;
 852         p_picture->i_planes = 1;
 853         break;
 854
 855     case VLC_CODEC_RGB16:
 856         p_picture->p->i_lines = i_height_aligned;
 857         p_picture->p->i_visible_lines = i_height;
 858         p_picture->p->i_pitch = i_width_aligned * 2;
 859         p_picture->p->i_visible_pitch = i_width * 2;
 860         p_picture->p->i_pixel_pitch = 2;
 861         p_picture->i_planes = 1;
 862         break;
 863
 864     case VLC_CODEC_RGB24:
 865         p_picture->p->i_lines = i_height_aligned;
 866         p_picture->p->i_visible_lines = i_height;
 867         p_picture->p->i_pitch = i_width_aligned * 3;
 868         p_picture->p->i_visible_pitch = i_width * 3;
 869         p_picture->p->i_pixel_pitch = 3;
 870         p_picture->i_planes = 1;
 871         break;
 872
 873     case VLC_CODEC_RGB32:
 874     case VLC_CODEC_RGBA:
 875         p_picture->p->i_lines = i_height_aligned;
 876         p_picture->p->i_visible_lines = i_height;
 877         p_picture->p->i_pitch = i_width_aligned * 4;
 878         p_picture->p->i_visible_pitch = i_width * 4;
 879         p_picture->p->i_pixel_pitch = 4;
 880         p_picture->i_planes = 1;
 881         break;
 882
 883     case VLC_CODEC_GREY:
 884     case VLC_CODEC_RGBP:
 885         p_picture->p->i_lines = i_height_aligned;
 886         p_picture->p->i_visible_lines = i_height;
 887         p_picture->p->i_pitch = i_width_aligned;
 888         p_picture->p->i_visible_pitch = i_width;
 889         p_picture->p->i_pixel_pitch = 1;
 890         p_picture->i_planes = 1;
 891         break;
 892
 893     default:
 894         p_picture->i_planes = 0;
 895         return VLC_EGENERIC;
 896     }
 897
 898     return VLC_SUCCESS;
 899 }
 900
 901 /*****************************************************************************
 902  *
 903  *****************************************************************************/
 904 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 905 {
 906     picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
 907     if( !p_picture )
 908         return NULL;
 909
 910     if( __vout_AllocatePicture( NULL, p_picture,
 911                                 i_chroma, i_width, i_height, i_aspect ) )
 912     {
 913         free( p_picture );
 914         return NULL;
 915     }
 916
 917     p_picture->i_refcount = 1;
 918     p_picture->pf_release = PictureReleaseCallback;
 919     p_picture->i_status = RESERVED_PICTURE;
 920
 921     return p_picture;
 922 }
 923
 924 /*****************************************************************************
 925  *
 926  *****************************************************************************/
 927 void picture_Delete( picture_t *p_picture )
 928 {
 929     assert( p_picture && p_picture->i_refcount == 0 );
 930
 931     free( p_picture->p_q );
 932     free( p_picture->p_data_orig );
 933     free( p_picture->p_sys );
 934     free( p_picture );
 935 }
 936
 937 /*****************************************************************************
 938  *
 939  *****************************************************************************/
 940 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
 941 {
 942     int i;
 943
 944     for( i = 0; i < p_src->i_planes ; i++ )
 945         plane_CopyPixels( p_dst->p+i, p_src->p+i );
 946 }
 947
 948 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
 949 {
 950     const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
 951                                      p_src->i_visible_pitch );
 952     const unsigned i_height = __MIN( p_dst->i_visible_lines,
 953                                      p_src->i_visible_lines );
 954
 955     if( p_src->i_pitch == p_dst->i_pitch )
 956     {
 957         /* There are margins, but with the same width : perfect ! */
 958         vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
 959                     p_src->i_pitch * i_height );
 960     }
 961     else
 962     {
 963         /* We need to proceed line by line */
 964         uint8_t *p_in = p_src->p_pixels;
 965         uint8_t *p_out = p_dst->p_pixels;
 966         int i_line;
 967
 968         assert( p_in );
 969         assert( p_out );
 970
 971         for( i_line = i_height; i_line--; )
 972         {
 973             vlc_memcpy( p_out, p_in, i_width );
 974             p_in += p_src->i_pitch;
 975             p_out += p_dst->i_pitch;
 976         }
 977     }
 978 }
 979
 980 /*****************************************************************************
 981  *
 982  *****************************************************************************/
 983 int picture_Export( vlc_object_t *p_obj,
 984                     block_t **pp_image,
 985                     video_format_t *p_fmt,
 986                     picture_t *p_picture,
 987                     vlc_fourcc_t i_format,
 988                     int i_override_width, int i_override_height )
 989 {
 990     /* */
 991     video_format_t fmt_in = p_picture->format;
 992     if( fmt_in.i_sar_num <= 0 || fmt_in.i_sar_den <= 0 )
 993     {
 994         fmt_in.i_sar_num =
 995         fmt_in.i_sar_den = 1;
 996     }
 997
 998     /* */
 999     video_format_t fmt_out;
1000     memset( &fmt_out, 0, sizeof(fmt_out) );
1001     fmt_out.i_sar_num =
1002     fmt_out.i_sar_den = 1;
1003     fmt_out.i_chroma  = i_format;
1004     fmt_out.i_width   = i_override_width;
1005     fmt_out.i_height  = i_override_height;
1006
1007     if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
1008     {
1009         fmt_out.i_height = fmt_in.i_height * fmt_out.i_width / fmt_in.i_width;
1010         const int i_height = fmt_out.i_height * fmt_in.i_sar_den / fmt_in.i_sar_num;
1011         if( i_height > 0 )
1012             fmt_out.i_height = i_height;
1013     }
1014     else
1015     {
1016         if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
1017         {
1018             fmt_out.i_width = fmt_in.i_width * fmt_out.i_height / fmt_in.i_height;
1019         }
1020         else
1021         {
1022             fmt_out.i_width = fmt_in.i_width;
1023             fmt_out.i_height = fmt_in.i_height;
1024         }
1025         const int i_width = fmt_out.i_width * fmt_in.i_sar_num / fmt_in.i_sar_den;
1026         if( i_width > 0 )
1027             fmt_out.i_width = i_width;
1028     }
1029
1030     image_handler_t *p_image = image_HandlerCreate( p_obj );
1031
1032     block_t *p_block = image_Write( p_image, p_picture, &fmt_in, &fmt_out );
1033
1034     image_HandlerDelete( p_image );
1035
1036     if( !p_block )
1037         return VLC_EGENERIC;
1038
1039     p_block->i_pts =
1040     p_block->i_dts = p_picture->date;
1041
1042     if( p_fmt )
1043         *p_fmt = fmt_out;
1044     *pp_image = p_block;
1045
1046     return VLC_SUCCESS;
1047 }
1048
1049 /*****************************************************************************
1050  *
1051  *****************************************************************************/
1052