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_pool.h>
  42
  43 #include "vout_pictures.h"
  44 #include "vout_internal.h"
  45
  46 /**
  47  * Display a picture
  48  *
  49  * Remove the reservation flag of a picture, which will cause it to be ready
  50  * for display.
  51  */
  52 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
  53 {
  54     vlc_mutex_lock( &p_vout->picture_lock );
  55
  56     if( p_pic->i_status == RESERVED_PICTURE )
  57     {
  58         p_pic->i_status = READY_PICTURE;
  59         vlc_cond_signal( &p_vout->p->picture_wait );
  60     }
  61     else
  62     {
  63         msg_Err( p_vout, "picture to display %p has invalid status %d",
  64                          p_pic, p_pic->i_status );
  65     }
  66     p_vout->p->i_picture_qtype = p_pic->i_qtype;
  67
  68     vlc_mutex_unlock( &p_vout->picture_lock );
  69 }
  70
  71 /**
  72  * Allocate a picture in the video output heap.
  73  *
  74  * This function creates a reserved image in the video output heap.
  75  * A null pointer is returned if the function fails. This method provides an
  76  * already allocated zone of memory in the picture data fields.
  77  * It needs locking since several pictures can be created by several producers
  78  * threads.
  79  */
  80 int vout_CountPictureAvailable( vout_thread_t *p_vout )
  81 {
  82     int i_free = 0;
  83     int i_pic;
  84
  85     vlc_mutex_lock( &p_vout->picture_lock );
  86     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
  87     {
  88         picture_t *p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1) % I_RENDERPICTURES];
  89
  90         switch( p_pic->i_status )
  91         {
  92             case DESTROYED_PICTURE:
  93                 i_free++;
  94                 break;
  95
  96             case FREE_PICTURE:
  97                 i_free++;
  98                 break;
  99
 100             default:
 101                 break;
 102         }
 103     }
 104     vlc_mutex_unlock( &p_vout->picture_lock );
 105
 106     return i_free;
 107 }
 108
 109 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
 110                                bool b_progressive,
 111                                bool b_top_field_first,
 112                                unsigned int i_nb_fields )
 113 {
 114     int         i_pic;                                      /* picture index */
 115     picture_t * p_pic;
 116     picture_t * p_freepic = NULL;                      /* first free picture */
 117
 118     /* Get lock */
 119     vlc_mutex_lock( &p_vout->picture_lock );
 120
 121     /*
 122      * Look for an empty place in the picture heap.
 123      */
 124     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
 125     {
 126         p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
 127                                  % I_RENDERPICTURES];
 128
 129         switch( p_pic->i_status )
 130         {
 131             case DESTROYED_PICTURE:
 132                 /* Memory will not be reallocated, and function can end
 133                  * immediately - this is the best possible case, since no
 134                  * memory allocation needs to be done */
 135                 p_pic->i_status   = RESERVED_PICTURE;
 136                 p_pic->i_refcount = 0;
 137                 p_pic->b_force    = 0;
 138
 139                 p_pic->b_progressive        = b_progressive;
 140                 p_pic->i_nb_fields          = i_nb_fields;
 141                 p_pic->b_top_field_first    = b_top_field_first;
 142
 143                 p_vout->i_heap_size++;
 144                 p_vout->render.i_last_used_pic =
 145                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 146                     % I_RENDERPICTURES;
 147                 vlc_mutex_unlock( &p_vout->picture_lock );
 148                 return( p_pic );
 149
 150             case FREE_PICTURE:
 151                 /* Picture is empty and ready for allocation */
 152                 p_vout->render.i_last_used_pic =
 153                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 154                     % I_RENDERPICTURES;
 155                 p_freepic = p_pic;
 156                 break;
 157
 158             default:
 159                 break;
 160         }
 161     }
 162
 163     /*
 164      * Prepare picture
 165      */
 166     if( p_freepic != NULL )
 167     {
 168         vout_AllocatePicture( VLC_OBJECT(p_vout),
 169                               p_freepic, p_vout->render.i_chroma,
 170                               p_vout->render.i_width, p_vout->render.i_height,
 171                               p_vout->render.i_aspect );
 172
 173         if( p_freepic->i_planes )
 174         {
 175             /* Copy picture information, set some default values */
 176             p_freepic->i_status   = RESERVED_PICTURE;
 177             p_freepic->i_type     = MEMORY_PICTURE;
 178             p_freepic->b_slow     = 0;
 179
 180             p_freepic->i_refcount = 0;
 181             p_freepic->b_force = 0;
 182
 183             p_freepic->b_progressive        = b_progressive;
 184             p_freepic->i_nb_fields          = i_nb_fields;
 185             p_freepic->b_top_field_first    = b_top_field_first;
 186
 187             p_vout->i_heap_size++;
 188         }
 189         else
 190         {
 191             /* Memory allocation failed : set picture as empty */
 192             p_freepic->i_status = FREE_PICTURE;
 193             p_freepic = NULL;
 194
 195             msg_Err( p_vout, "picture allocation failed" );
 196         }
 197
 198         vlc_mutex_unlock( &p_vout->picture_lock );
 199
 200         return( p_freepic );
 201     }
 202
 203     /* No free or destroyed picture could be found, but the decoder
 204      * will try again in a while. */
 205     vlc_mutex_unlock( &p_vout->picture_lock );
 206
 207     return( NULL );
 208 }
 209
 210 /* */
 211 static void DestroyPicture( vout_thread_t *p_vout, picture_t *p_picture )
 212 {
 213     vlc_assert_locked( &p_vout->picture_lock );
 214
 215     p_picture->i_status = DESTROYED_PICTURE;
 216     p_vout->i_heap_size--;
 217     picture_CleanupQuant( p_picture );
 218
 219     vlc_cond_signal( &p_vout->p->picture_wait );
 220 }
 221
 222 /**
 223  * Remove a permanent or reserved picture from the heap
 224  *
 225  * This function frees a previously reserved picture or a permanent
 226  * picture. It is meant to be used when the construction of a picture aborted.
 227  * Note that the picture will be destroyed even if it is linked !
 228  *
 229  * TODO remove it, vout_DropPicture should be used instead
 230  */
 231 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 232 {
 233 #ifndef NDEBUG
 234     /* Check if picture status is valid */
 235     vlc_mutex_lock( &p_vout->picture_lock );
 236     if( p_pic->i_status != RESERVED_PICTURE )
 237     {
 238         msg_Err( p_vout, "picture to destroy %p has invalid status %d",
 239                          p_pic, p_pic->i_status );
 240     }
 241     vlc_mutex_unlock( &p_vout->picture_lock );
 242 #endif
 243
 244     vout_DropPicture( p_vout, p_pic );
 245 }
 246
 247 /* */
 248 void vout_UsePictureLocked( vout_thread_t *p_vout, picture_t *p_picture )
 249 {
 250     vlc_assert_locked( &p_vout->picture_lock );
 251     if( p_picture->i_refcount > 0 )
 252     {
 253         /* Pretend we displayed the picture, but don't destroy
 254          * it since the decoder might still need it. */
 255         p_picture->i_status = DISPLAYED_PICTURE;
 256     }
 257     else
 258     {
 259         /* Destroy the picture without displaying it */
 260         DestroyPicture( p_vout, p_picture );
 261     }
 262 }
 263
 264 /* */
 265 void vout_DropPicture( vout_thread_t *p_vout, picture_t *p_pic  )
 266 {
 267     vlc_mutex_lock( &p_vout->picture_lock );
 268
 269     if( p_pic->i_status == READY_PICTURE )
 270     {
 271         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 272         p_pic->date = 1;
 273         vlc_cond_signal( &p_vout->p->picture_wait );
 274     }
 275     else
 276     {
 277         vout_UsePictureLocked( p_vout, p_pic );
 278     }
 279
 280     vlc_mutex_unlock( &p_vout->picture_lock );
 281 }
 282
 283 /**
 284  * Increment reference counter of a picture
 285  *
 286  * This function increments the reference counter of a picture in the video
 287  * heap. It needs a lock since several producer threads can access the picture.
 288  */
 289 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 290 {
 291     vlc_mutex_lock( &p_vout->picture_lock );
 292     p_pic->i_refcount++;
 293     vlc_mutex_unlock( &p_vout->picture_lock );
 294 }
 295
 296 /**
 297  * Decrement reference counter of a picture
 298  *
 299  * This function decrement the reference counter of a picture in the video heap
 300  */
 301 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 302 {
 303     vlc_mutex_lock( &p_vout->picture_lock );
 304
 305     if( p_pic->i_refcount > 0 )
 306         p_pic->i_refcount--;
 307     else
 308         msg_Err( p_vout, "Invalid picture reference count (%p, %d)",
 309                  p_pic, p_pic->i_refcount );
 310
 311     if( p_pic->i_refcount == 0 && p_pic->i_status == DISPLAYED_PICTURE )
 312         DestroyPicture( p_vout, p_pic );
 313
 314     vlc_mutex_unlock( &p_vout->picture_lock );
 315 }
 316
 317 static int vout_LockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 318 {
 319     if( p_picture->pf_lock )
 320         return p_picture->pf_lock( p_vout, p_picture );
 321     return VLC_SUCCESS;
 322 }
 323 static void vout_UnlockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 324 {
 325     if( p_picture->pf_unlock )
 326         p_picture->pf_unlock( p_vout, p_picture );
 327 }
 328
 329 /**
 330  * Render a picture
 331  *
 332  * This function chooses whether the current picture needs to be copied
 333  * before rendering, does the subpicture magic, and tells the video output
 334  * thread which direct buffer needs to be displayed.
 335  */
 336 picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
 337                                subpicture_t *p_subpic, bool b_paused )
 338 {
 339     if( p_pic == NULL )
 340         return NULL;
 341
 342     if( p_pic->i_type == DIRECT_PICTURE )
 343     {
 344         /* Picture is in a direct buffer. */
 345
 346         if( p_subpic != NULL )
 347         {
 348             /* We have subtitles. First copy the picture to
 349              * the spare direct buffer, then render the
 350              * subtitles. */
 351             if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 352                 return NULL;
 353
 354             picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 355
 356             spu_RenderSubpictures( p_vout->p_spu,
 357                                    PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 358                                    p_subpic, &p_vout->fmt_in, b_paused );
 359
 360             vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 361
 362             return PP_OUTPUTPICTURE[0];
 363         }
 364
 365         /* No subtitles, picture is in a directbuffer so
 366          * we can display it directly (even if it is still
 367          * in use or not). */
 368         return p_pic;
 369     }
 370
 371     /* Not a direct buffer. We either need to copy it to a direct buffer,
 372      * or render it if the chroma isn't the same. */
 373     if( p_vout->p->b_direct )
 374     {
 375         /* Picture is not in a direct buffer, but is exactly the
 376          * same size as the direct buffers. A memcpy() is enough,
 377          * then render the subtitles. */
 378
 379         if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 380             return NULL;
 381
 382         picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 383         spu_RenderSubpictures( p_vout->p_spu,
 384                                PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 385                                p_subpic, &p_vout->fmt_in, b_paused );
 386
 387         vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 388
 389         return PP_OUTPUTPICTURE[0];
 390     }
 391
 392     /* Picture is not in a direct buffer, and needs to be converted to
 393      * another size/chroma. Then the subtitles need to be rendered as
 394      * well. This usually means software YUV, or hardware YUV with a
 395      * different chroma. */
 396
 397     if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
 398     {
 399         /* The picture buffer is in slow memory. We'll use
 400          * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
 401          * one for subpictures rendering. */
 402         picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
 403         if( p_tmp_pic->i_status == FREE_PICTURE )
 404         {
 405             vout_AllocatePicture( VLC_OBJECT(p_vout),
 406                                   p_tmp_pic, p_vout->fmt_out.i_chroma,
 407                                   p_vout->fmt_out.i_width,
 408                                   p_vout->fmt_out.i_height,
 409                                   p_vout->fmt_out.i_aspect );
 410             p_tmp_pic->i_type = MEMORY_PICTURE;
 411             p_tmp_pic->i_status = RESERVED_PICTURE;
 412         }
 413
 414         /* Convert image to the first direct buffer */
 415         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
 416         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 417
 418         /* Render subpictures on the first direct buffer */
 419         spu_RenderSubpictures( p_vout->p_spu,
 420                                p_tmp_pic, &p_vout->fmt_out,
 421                                p_subpic, &p_vout->fmt_in, b_paused );
 422
 423         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 424             return NULL;
 425
 426         picture_Copy( &p_vout->p_picture[0], p_tmp_pic );
 427     }
 428     else
 429     {
 430         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 431             return NULL;
 432
 433         /* Convert image to the first direct buffer */
 434         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)&p_vout->p_picture[0];
 435         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 436
 437         /* Render subpictures on the first direct buffer */
 438         spu_RenderSubpictures( p_vout->p_spu,
 439                                &p_vout->p_picture[0], &p_vout->fmt_out,
 440                                p_subpic, &p_vout->fmt_in, b_paused );
 441     }
 442
 443     vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );
 444
 445     return &p_vout->p_picture[0];
 446 }
 447
 448 /**
 449  * Calculate image window coordinates
 450  *
 451  * This function will be accessed by plugins. It calculates the relative
 452  * position of the output window and the image window.
 453  */
 454 void vout_PlacePicture( const vout_thread_t *p_vout,
 455                         unsigned int i_width, unsigned int i_height,
 456                         unsigned int *restrict pi_x,
 457                         unsigned int *restrict pi_y,
 458                         unsigned int *restrict pi_width,
 459                         unsigned int *restrict pi_height )
 460 {
 461     if( i_width <= 0 || i_height <= 0 )
 462     {
 463         *pi_width = *pi_height = *pi_x = *pi_y = 0;
 464         return;
 465     }
 466
 467     if( p_vout->b_autoscale )
 468     {
 469         *pi_width = i_width;
 470         *pi_height = i_height;
 471     }
 472     else
 473     {
 474         int i_zoom = p_vout->i_zoom;
 475         /* be realistic, scaling factor confined between .2 and 10. */
 476         if( i_zoom > 10 * ZOOM_FP_FACTOR )      i_zoom = 10 * ZOOM_FP_FACTOR;
 477         else if( i_zoom <  ZOOM_FP_FACTOR / 5 ) i_zoom = ZOOM_FP_FACTOR / 5;
 478
 479         unsigned int i_original_width, i_original_height;
 480
 481         if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 482         {
 483             i_original_width = p_vout->fmt_in.i_visible_width *
 484                                p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den;
 485             i_original_height =  p_vout->fmt_in.i_visible_height;
 486         }
 487         else
 488         {
 489             i_original_width =  p_vout->fmt_in.i_visible_width;
 490             i_original_height = p_vout->fmt_in.i_visible_height *
 491                                 p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num;
 492         }
 493 #ifdef WIN32
 494         /* On windows, inner video window exceeding container leads to black screen */
 495         *pi_width = __MIN( i_width, i_original_width * i_zoom / ZOOM_FP_FACTOR );
 496         *pi_height = __MIN( i_height, i_original_height * i_zoom / ZOOM_FP_FACTOR );
 497 #else
 498         *pi_width = i_original_width * i_zoom / ZOOM_FP_FACTOR ;
 499         *pi_height = i_original_height * i_zoom / ZOOM_FP_FACTOR ;
 500 #endif
 501     }
 502
 503     int64_t i_scaled_width = p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
 504                               *pi_height / p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
 505     int64_t i_scaled_height = p_vout->fmt_in.i_visible_height * (int64_t)p_vout->fmt_in.i_sar_den *
 506                                *pi_width / p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
 507
 508     if( i_scaled_width <= 0 || i_scaled_height <= 0 )
 509     {
 510         msg_Warn( p_vout, "ignoring broken aspect ratio" );
 511         i_scaled_width = *pi_width;
 512         i_scaled_height = *pi_height;
 513     }
 514
 515     if( i_scaled_width > *pi_width )
 516         *pi_height = i_scaled_height;
 517     else
 518         *pi_width = i_scaled_width;
 519
 520     switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
 521     {
 522     case VOUT_ALIGN_LEFT:
 523         *pi_x = 0;
 524         break;
 525     case VOUT_ALIGN_RIGHT:
 526         *pi_x = i_width - *pi_width;
 527         break;
 528     default:
 529         *pi_x = ( i_width - *pi_width ) / 2;
 530     }
 531
 532     switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
 533     {
 534     case VOUT_ALIGN_TOP:
 535         *pi_y = 0;
 536         break;
 537     case VOUT_ALIGN_BOTTOM:
 538         *pi_y = i_height - *pi_height;
 539         break;
 540     default:
 541         *pi_y = ( i_height - *pi_height ) / 2;
 542     }
 543 }
 544
 545 /**
 546  * Allocate a new picture in the heap.
 547  *
 548  * This function allocates a fake direct buffer in memory, which can be
 549  * used exactly like a video buffer. The video output thread then manages
 550  * how it gets displayed.
 551  */
 552 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
 553                             vlc_fourcc_t i_chroma,
 554                             int i_width, int i_height, int i_aspect )
 555 {
 556     int i_bytes, i_index, i_width_aligned, i_height_aligned;
 557
 558     /* Make sure the real dimensions are a multiple of 16 */
 559     i_width_aligned = (i_width + 15) >> 4 << 4;
 560     i_height_aligned = (i_height + 15) >> 4 << 4;
 561
 562     if( picture_Setup( p_pic, i_chroma,
 563                        i_width, i_height, i_aspect ) != VLC_SUCCESS )
 564     {
 565         p_pic->i_planes = 0;
 566         return VLC_EGENERIC;
 567     }
 568
 569     /* Calculate how big the new image should be */
 570     i_bytes = p_pic->format.i_bits_per_pixel *
 571         i_width_aligned * i_height_aligned / 8;
 572
 573     p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
 574
 575     if( p_pic->p_data == NULL )
 576     {
 577         p_pic->i_planes = 0;
 578         return VLC_EGENERIC;
 579     }
 580
 581     /* Fill the p_pixels field for each plane */
 582     p_pic->p[ 0 ].p_pixels = p_pic->p_data;
 583
 584     for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
 585     {
 586         p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
 587             p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
 588     }
 589
 590     return VLC_SUCCESS;
 591 }
 592
 593 /**
 594  * Compare two chroma values
 595  *
 596  * This function returns 1 if the two fourcc values given as argument are
 597  * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
 598  */
 599 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
 600 {
 601     static const vlc_fourcc_t p_I420[] = {
 602         VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, 0
 603     };
 604     static const vlc_fourcc_t p_I422[] = {
 605         VLC_CODEC_I422, VLC_CODEC_J422, 0
 606     };
 607     static const vlc_fourcc_t p_I440[] = {
 608         VLC_CODEC_I440, VLC_CODEC_J440, 0
 609     };
 610     static const vlc_fourcc_t p_I444[] = {
 611         VLC_CODEC_I444, VLC_CODEC_J444, 0
 612     };
 613     static const vlc_fourcc_t *pp_fcc[] = {
 614         p_I420, p_I422, p_I440, p_I444, NULL
 615     };
 616
 617     /* */
 618     i_chroma = vlc_fourcc_GetCodec( VIDEO_ES, i_chroma );
 619     i_amorhc = vlc_fourcc_GetCodec( VIDEO_ES, i_amorhc );
 620
 621     /* If they are the same, they are the same ! */
 622     if( i_chroma == i_amorhc )
 623         return 1;
 624
 625     /* Check for equivalence classes */
 626     for( int i = 0; pp_fcc[i] != NULL; i++ )
 627     {
 628         bool b_fcc1 = false;
 629         bool b_fcc2 = false;
 630         for( int j = 0; pp_fcc[i][j] != 0; j++ )
 631         {
 632             if( i_chroma == pp_fcc[i][j] )
 633                 b_fcc1 = true;
 634             if( i_amorhc == pp_fcc[i][j] )
 635                 b_fcc2 = true;
 636         }
 637         if( b_fcc1 && b_fcc2 )
 638             return 1;
 639     }
 640     return 0;
 641 }
 642
 643 /*****************************************************************************
 644  *
 645  *****************************************************************************/
 646 static void PictureReleaseCallback( picture_t *p_picture )
 647 {
 648     if( --p_picture->i_refcount > 0 )
 649         return;
 650     picture_Delete( p_picture );
 651 }
 652
 653 /*****************************************************************************
 654  *
 655  *****************************************************************************/
 656 int picture_Setup( picture_t *p_picture, vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
 657 {
 658     int i_index, i_width_aligned, i_height_aligned;
 659
 660     /* Store default values */
 661     for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
 662     {
 663         p_picture->p[i_index].p_pixels = NULL;
 664         p_picture->p[i_index].i_pixel_pitch = 1;
 665     }
 666
 667     p_picture->pf_release = NULL;
 668     p_picture->p_release_sys = 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     assert( p_picture->p_release_sys == NULL );
 931
 932     free( p_picture->p_q );
 933     free( p_picture->p_data_orig );
 934     free( p_picture->p_sys );
 935     free( p_picture );
 936 }
 937
 938 /*****************************************************************************
 939  *
 940  *****************************************************************************/
 941 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
 942 {
 943     int i;
 944
 945     for( i = 0; i < p_src->i_planes ; i++ )
 946         plane_CopyPixels( p_dst->p+i, p_src->p+i );
 947 }
 948
 949 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
 950 {
 951     const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
 952                                      p_src->i_visible_pitch );
 953     const unsigned i_height = __MIN( p_dst->i_visible_lines,
 954                                      p_src->i_visible_lines );
 955
 956     if( p_src->i_pitch == p_dst->i_pitch )
 957     {
 958         /* There are margins, but with the same width : perfect ! */
 959         vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
 960                     p_src->i_pitch * i_height );
 961     }
 962     else
 963     {
 964         /* We need to proceed line by line */
 965         uint8_t *p_in = p_src->p_pixels;
 966         uint8_t *p_out = p_dst->p_pixels;
 967         int i_line;
 968
 969         assert( p_in );
 970         assert( p_out );
 971
 972         for( i_line = i_height; i_line--; )
 973         {
 974             vlc_memcpy( p_out, p_in, i_width );
 975             p_in += p_src->i_pitch;
 976             p_out += p_dst->i_pitch;
 977         }
 978     }
 979 }
 980
 981 /*****************************************************************************
 982  *
 983  *****************************************************************************/
 984 int picture_Export( vlc_object_t *p_obj,
 985                     block_t **pp_image,
 986                     video_format_t *p_fmt,
 987                     picture_t *p_picture,
 988                     vlc_fourcc_t i_format,
 989                     int i_override_width, int i_override_height )
 990 {
 991     /* */
 992     video_format_t fmt_in = p_picture->format;
 993     if( fmt_in.i_sar_num <= 0 || fmt_in.i_sar_den <= 0 )
 994     {
 995         fmt_in.i_sar_num =
 996         fmt_in.i_sar_den = 1;
 997     }
 998
 999     /* */
1000     video_format_t fmt_out;
1001     memset( &fmt_out, 0, sizeof(fmt_out) );
1002     fmt_out.i_sar_num =
1003     fmt_out.i_sar_den = 1;
1004     fmt_out.i_chroma  = i_format;
1005     fmt_out.i_width   = i_override_width;
1006     fmt_out.i_height  = i_override_height;
1007
1008     if( fmt_out.i_height == 0 && fmt_out.i_width > 0 )
1009     {
1010         fmt_out.i_height = fmt_in.i_height * fmt_out.i_width / fmt_in.i_width;
1011         const int i_height = fmt_out.i_height * fmt_in.i_sar_den / fmt_in.i_sar_num;
1012         if( i_height > 0 )
1013             fmt_out.i_height = i_height;
1014     }
1015     else
1016     {
1017         if( fmt_out.i_width == 0 && fmt_out.i_height > 0 )
1018         {
1019             fmt_out.i_width = fmt_in.i_width * fmt_out.i_height / fmt_in.i_height;
1020         }
1021         else
1022         {
1023             fmt_out.i_width = fmt_in.i_width;
1024             fmt_out.i_height = fmt_in.i_height;
1025         }
1026         const int i_width = fmt_out.i_width * fmt_in.i_sar_num / fmt_in.i_sar_den;
1027         if( i_width > 0 )
1028             fmt_out.i_width = i_width;
1029     }
1030
1031     image_handler_t *p_image = image_HandlerCreate( p_obj );
1032
1033     block_t *p_block = image_Write( p_image, p_picture, &fmt_in, &fmt_out );
1034
1035     image_HandlerDelete( p_image );
1036
1037     if( !p_block )
1038         return VLC_EGENERIC;
1039
1040     p_block->i_pts =
1041     p_block->i_dts = p_picture->date;
1042
1043     if( p_fmt )
1044         *p_fmt = fmt_out;
1045     *pp_image = p_block;
1046
1047     return VLC_SUCCESS;
1048 }
1049
1050 /*****************************************************************************
1051  *
1052  *****************************************************************************/