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
  33 #include <vlc_common.h>
  34 #include <vlc_vout.h>
  35 #include <vlc_osd.h>
  36 #include <vlc_filter.h>
  37 #include "vout_pictures.h"
  38 #include "vout_internal.h"
  39
  40 #include <assert.h>
  41
  42 /**
  43  * Display a picture
  44  *
  45  * Remove the reservation flag of a picture, which will cause it to be ready
  46  * for display. The picture won't be displayed until vout_DatePicture has been
  47  * called.
  48  */
  49 void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
  50 {
  51     vlc_mutex_lock( &p_vout->picture_lock );
  52     switch( p_pic->i_status )
  53     {
  54     case RESERVED_PICTURE:
  55         p_pic->i_status = RESERVED_DISP_PICTURE;
  56         break;
  57     case RESERVED_DATED_PICTURE:
  58         p_pic->i_status = READY_PICTURE;
  59         break;
  60     default:
  61         msg_Err( p_vout, "picture to display %p has invalid status %d",
  62                          p_pic, p_pic->i_status );
  63         break;
  64     }
  65
  66     vlc_mutex_unlock( &p_vout->picture_lock );
  67 }
  68
  69 /**
  70  * Date a picture
  71  *
  72  * Remove the reservation flag of a picture, which will cause it to be ready
  73  * for display. The picture won't be displayed until vout_DisplayPicture has
  74  * been called.
  75  * \param p_vout The vout in question
  76  * \param p_pic The picture to date
  77  * \param date The date to display the picture
  78  */
  79 void vout_DatePicture( vout_thread_t *p_vout,
  80                        picture_t *p_pic, mtime_t date )
  81 {
  82     vlc_mutex_lock( &p_vout->picture_lock );
  83     p_pic->date = date;
  84     switch( p_pic->i_status )
  85     {
  86     case RESERVED_PICTURE:
  87         p_pic->i_status = RESERVED_DATED_PICTURE;
  88         break;
  89     case RESERVED_DISP_PICTURE:
  90         p_pic->i_status = READY_PICTURE;
  91         break;
  92     default:
  93         msg_Err( p_vout, "picture to date %p has invalid status %d",
  94                          p_pic, p_pic->i_status );
  95         break;
  96     }
  97
  98     vlc_mutex_unlock( &p_vout->picture_lock );
  99 }
 100
 101 /**
 102  * Allocate a picture in the video output heap.
 103  *
 104  * This function creates a reserved image in the video output heap.
 105  * A null pointer is returned if the function fails. This method provides an
 106  * already allocated zone of memory in the picture data fields.
 107  * It needs locking since several pictures can be created by several producers
 108  * threads.
 109  */
 110 int vout_CountPictureAvailable( vout_thread_t *p_vout )
 111 {
 112     int i_free = 0;
 113     int i_pic;
 114
 115     vlc_mutex_lock( &p_vout->picture_lock );
 116     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
 117     {
 118         picture_t *p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1) % I_RENDERPICTURES];
 119
 120         switch( p_pic->i_status )
 121         {
 122             case DESTROYED_PICTURE:
 123                 i_free++;
 124                 break;
 125
 126             case FREE_PICTURE:
 127                 i_free++;
 128                 break;
 129
 130             default:
 131                 break;
 132         }
 133     }
 134     vlc_mutex_unlock( &p_vout->picture_lock );
 135
 136     return i_free;
 137 }
 138
 139 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
 140                                bool b_progressive,
 141                                bool b_top_field_first,
 142                                unsigned int i_nb_fields )
 143 {
 144     int         i_pic;                                      /* picture index */
 145     picture_t * p_pic;
 146     picture_t * p_freepic = NULL;                      /* first free picture */
 147
 148     /* Get lock */
 149     vlc_mutex_lock( &p_vout->picture_lock );
 150
 151     /*
 152      * Look for an empty place in the picture heap.
 153      */
 154     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
 155     {
 156         p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
 157                                  % I_RENDERPICTURES];
 158
 159         switch( p_pic->i_status )
 160         {
 161             case DESTROYED_PICTURE:
 162                 /* Memory will not be reallocated, and function can end
 163                  * immediately - this is the best possible case, since no
 164                  * memory allocation needs to be done */
 165                 p_pic->i_status   = RESERVED_PICTURE;
 166                 p_pic->i_refcount = 0;
 167                 p_pic->b_force    = 0;
 168
 169                 p_pic->b_progressive        = b_progressive;
 170                 p_pic->i_nb_fields          = i_nb_fields;
 171                 p_pic->b_top_field_first    = b_top_field_first;
 172
 173                 p_vout->i_heap_size++;
 174                 p_vout->render.i_last_used_pic =
 175                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 176                     % I_RENDERPICTURES;
 177                 vlc_mutex_unlock( &p_vout->picture_lock );
 178                 return( p_pic );
 179
 180             case FREE_PICTURE:
 181                 /* Picture is empty and ready for allocation */
 182                 p_vout->render.i_last_used_pic =
 183                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 184                     % I_RENDERPICTURES;
 185                 p_freepic = p_pic;
 186                 break;
 187
 188             default:
 189                 break;
 190         }
 191     }
 192
 193     /*
 194      * Prepare picture
 195      */
 196     if( p_freepic != NULL )
 197     {
 198         vout_AllocatePicture( VLC_OBJECT(p_vout),
 199                               p_freepic, p_vout->render.i_chroma,
 200                               p_vout->render.i_width, p_vout->render.i_height,
 201                               p_vout->render.i_aspect );
 202
 203         if( p_freepic->i_planes )
 204         {
 205             /* Copy picture information, set some default values */
 206             p_freepic->i_status   = RESERVED_PICTURE;
 207             p_freepic->i_type     = MEMORY_PICTURE;
 208             p_freepic->b_slow     = 0;
 209
 210             p_freepic->i_refcount = 0;
 211             p_freepic->b_force = 0;
 212
 213             p_freepic->b_progressive        = b_progressive;
 214             p_freepic->i_nb_fields          = i_nb_fields;
 215             p_freepic->b_top_field_first    = b_top_field_first;
 216
 217             p_freepic->i_matrix_coefficients = 1;
 218
 219             p_vout->i_heap_size++;
 220         }
 221         else
 222         {
 223             /* Memory allocation failed : set picture as empty */
 224             p_freepic->i_status = FREE_PICTURE;
 225             p_freepic = NULL;
 226
 227             msg_Err( p_vout, "picture allocation failed" );
 228         }
 229
 230         vlc_mutex_unlock( &p_vout->picture_lock );
 231
 232         return( p_freepic );
 233     }
 234
 235     /* No free or destroyed picture could be found, but the decoder
 236      * will try again in a while. */
 237     vlc_mutex_unlock( &p_vout->picture_lock );
 238
 239     return( NULL );
 240 }
 241
 242 /**
 243  * Remove a permanent or reserved picture from the heap
 244  *
 245  * This function frees a previously reserved picture or a permanent
 246  * picture. It is meant to be used when the construction of a picture aborted.
 247  * Note that the picture will be destroyed even if it is linked !
 248  */
 249 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 250 {
 251     vlc_mutex_lock( &p_vout->picture_lock );
 252
 253 #ifndef NDEBUG
 254     /* Check if picture status is valid */
 255     if( (p_pic->i_status != RESERVED_PICTURE) &&
 256         (p_pic->i_status != RESERVED_DATED_PICTURE) &&
 257         (p_pic->i_status != RESERVED_DISP_PICTURE) )
 258     {
 259         msg_Err( p_vout, "picture to destroy %p has invalid status %d",
 260                          p_pic, p_pic->i_status );
 261     }
 262 #endif
 263
 264     p_pic->i_status = DESTROYED_PICTURE;
 265     p_vout->i_heap_size--;
 266     picture_CleanupQuant( p_pic );
 267
 268     vlc_mutex_unlock( &p_vout->picture_lock );
 269 }
 270
 271 /* */
 272 void vout_DropPicture( vout_thread_t *p_vout, picture_t *p_pic  )
 273 {
 274     vlc_mutex_lock( &p_vout->picture_lock );
 275
 276     if( p_pic->i_status == READY_PICTURE )
 277     {
 278         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 279         p_pic->date = 1;
 280     }
 281     else if( p_pic->i_refcount > 0 )
 282     {
 283         p_pic->i_status = DISPLAYED_PICTURE;
 284     }
 285     else
 286     {
 287         p_pic->i_status = DESTROYED_PICTURE;
 288         p_vout->i_heap_size--;
 289         picture_CleanupQuant( p_pic );
 290     }
 291
 292     vlc_mutex_unlock( &p_vout->picture_lock );
 293 }
 294
 295 /**
 296  * Increment reference counter of a picture
 297  *
 298  * This function increments the reference counter of a picture in the video
 299  * heap. It needs a lock since several producer threads can access the picture.
 300  */
 301 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 302 {
 303     vlc_mutex_lock( &p_vout->picture_lock );
 304     p_pic->i_refcount++;
 305     vlc_mutex_unlock( &p_vout->picture_lock );
 306 }
 307
 308 /**
 309  * Decrement reference counter of a picture
 310  *
 311  * This function decrement the reference counter of a picture in the video heap
 312  */
 313 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 314 {
 315     vlc_mutex_lock( &p_vout->picture_lock );
 316     p_pic->i_refcount--;
 317
 318     if( ( p_pic->i_refcount == 0 ) &&
 319         ( p_pic->i_status == DISPLAYED_PICTURE ) )
 320     {
 321         p_pic->i_status = DESTROYED_PICTURE;
 322         p_vout->i_heap_size--;
 323         picture_CleanupQuant( p_pic );
 324     }
 325
 326     vlc_mutex_unlock( &p_vout->picture_lock );
 327 }
 328
 329 static int vout_LockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 330 {
 331     if( p_picture->pf_lock )
 332         return p_picture->pf_lock( p_vout, p_picture );
 333     return VLC_SUCCESS;
 334 }
 335 static void vout_UnlockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 336 {
 337     if( p_picture->pf_unlock )
 338         p_picture->pf_unlock( p_vout, p_picture );
 339 }
 340
 341 /**
 342  * Render a picture
 343  *
 344  * This function chooses whether the current picture needs to be copied
 345  * before rendering, does the subpicture magic, and tells the video output
 346  * thread which direct buffer needs to be displayed.
 347  */
 348 picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
 349                                subpicture_t *p_subpic, bool b_paused )
 350 {
 351     if( p_pic == NULL )
 352         return NULL;
 353
 354     if( p_pic->i_type == DIRECT_PICTURE )
 355     {
 356         /* Picture is in a direct buffer. */
 357
 358         if( p_subpic != NULL )
 359         {
 360             /* We have subtitles. First copy the picture to
 361              * the spare direct buffer, then render the
 362              * subtitles. */
 363             if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 364                 return NULL;
 365
 366             picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 367
 368             spu_RenderSubpictures( p_vout->p_spu,
 369                                    PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 370                                    p_subpic, &p_vout->fmt_in, b_paused );
 371
 372             vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 373
 374             return PP_OUTPUTPICTURE[0];
 375         }
 376
 377         /* No subtitles, picture is in a directbuffer so
 378          * we can display it directly (even if it is still
 379          * in use or not). */
 380         return p_pic;
 381     }
 382
 383     /* Not a direct buffer. We either need to copy it to a direct buffer,
 384      * or render it if the chroma isn't the same. */
 385     if( p_vout->p->b_direct )
 386     {
 387         /* Picture is not in a direct buffer, but is exactly the
 388          * same size as the direct buffers. A memcpy() is enough,
 389          * then render the subtitles. */
 390
 391         if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 392             return NULL;
 393
 394         picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 395         spu_RenderSubpictures( p_vout->p_spu,
 396                                PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 397                                p_subpic, &p_vout->fmt_in, b_paused );
 398
 399         vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 400
 401         return PP_OUTPUTPICTURE[0];
 402     }
 403
 404     /* Picture is not in a direct buffer, and needs to be converted to
 405      * another size/chroma. Then the subtitles need to be rendered as
 406      * well. This usually means software YUV, or hardware YUV with a
 407      * different chroma. */
 408
 409     if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
 410     {
 411         /* The picture buffer is in slow memory. We'll use
 412          * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
 413          * one for subpictures rendering. */
 414         picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
 415         if( p_tmp_pic->i_status == FREE_PICTURE )
 416         {
 417             vout_AllocatePicture( VLC_OBJECT(p_vout),
 418                                   p_tmp_pic, p_vout->fmt_out.i_chroma,
 419                                   p_vout->fmt_out.i_width,
 420                                   p_vout->fmt_out.i_height,
 421                                   p_vout->fmt_out.i_aspect );
 422             p_tmp_pic->i_type = MEMORY_PICTURE;
 423             p_tmp_pic->i_status = RESERVED_PICTURE;
 424             /* some modules (such as blend)  needs to know the extra information in picture heap */
 425             p_tmp_pic->p_heap = &p_vout->output;
 426         }
 427
 428         /* Convert image to the first direct buffer */
 429         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
 430         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 431
 432         /* Render subpictures on the first direct buffer */
 433         spu_RenderSubpictures( p_vout->p_spu,
 434                                p_tmp_pic, &p_vout->fmt_out,
 435                                p_subpic, &p_vout->fmt_in, b_paused );
 436
 437         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 438             return NULL;
 439
 440         picture_Copy( &p_vout->p_picture[0], p_tmp_pic );
 441     }
 442     else
 443     {
 444         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 445             return NULL;
 446
 447         /* Convert image to the first direct buffer */
 448         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)&p_vout->p_picture[0];
 449         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 450
 451         /* Render subpictures on the first direct buffer */
 452         spu_RenderSubpictures( p_vout->p_spu,
 453                                &p_vout->p_picture[0], &p_vout->fmt_out,
 454                                p_subpic, &p_vout->fmt_in, b_paused );
 455     }
 456
 457     vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );
 458
 459     return &p_vout->p_picture[0];
 460 }
 461
 462 /**
 463  * Calculate image window coordinates
 464  *
 465  * This function will be accessed by plugins. It calculates the relative
 466  * position of the output window and the image window.
 467  */
 468 void vout_PlacePicture( vout_thread_t *p_vout,
 469                         unsigned int i_width, unsigned int i_height,
 470                         unsigned int *pi_x, unsigned int *pi_y,
 471                         unsigned int *pi_width, unsigned int *pi_height )
 472 {
 473     if( (i_width <= 0) || (i_height <=0) )
 474     {
 475         *pi_width = *pi_height = *pi_x = *pi_y = 0;
 476         return;
 477     }
 478
 479     if( p_vout->b_scale )
 480     {
 481         *pi_width = i_width;
 482         *pi_height = i_height;
 483     }
 484     else
 485     {
 486         *pi_width = __MIN( i_width, p_vout->fmt_in.i_visible_width );
 487         *pi_height = __MIN( i_height, p_vout->fmt_in.i_visible_height );
 488     }
 489
 490      int64_t i_scaled_width = p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
 491                               *pi_height / p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
 492      int64_t i_scaled_height = p_vout->fmt_in.i_visible_height * (int64_t)p_vout->fmt_in.i_sar_den *
 493                                *pi_width / p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
 494
 495     if( i_scaled_width <= 0 || i_scaled_height <= 0 )
 496     {
 497         msg_Warn( p_vout, "ignoring broken aspect ratio" );
 498         i_scaled_width = *pi_width;
 499         i_scaled_height = *pi_height;
 500     }
 501
 502     if( i_scaled_width > *pi_width )
 503         *pi_height = i_scaled_height;
 504     else
 505         *pi_width = i_scaled_width;
 506
 507     switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
 508     {
 509     case VOUT_ALIGN_LEFT:
 510         *pi_x = 0;
 511         break;
 512     case VOUT_ALIGN_RIGHT:
 513         *pi_x = i_width - *pi_width;
 514         break;
 515     default:
 516         *pi_x = ( i_width - *pi_width ) / 2;
 517     }
 518
 519     switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
 520     {
 521     case VOUT_ALIGN_TOP:
 522         *pi_y = 0;
 523         break;
 524     case VOUT_ALIGN_BOTTOM:
 525         *pi_y = i_height - *pi_height;
 526         break;
 527     default:
 528         *pi_y = ( i_height - *pi_height ) / 2;
 529     }
 530 }
 531
 532 /**
 533  * Allocate a new picture in the heap.
 534  *
 535  * This function allocates a fake direct buffer in memory, which can be
 536  * used exactly like a video buffer. The video output thread then manages
 537  * how it gets displayed.
 538  */
 539 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
 540                             vlc_fourcc_t i_chroma,
 541                             int i_width, int i_height, int i_aspect )
 542 {
 543     int i_bytes, i_index, i_width_aligned, i_height_aligned;
 544
 545     /* Make sure the real dimensions are a multiple of 16 */
 546     i_width_aligned = (i_width + 15) >> 4 << 4;
 547     i_height_aligned = (i_height + 15) >> 4 << 4;
 548
 549     if( vout_InitPicture( p_this, p_pic, i_chroma,
 550                           i_width, i_height, i_aspect ) != VLC_SUCCESS )
 551     {
 552         p_pic->i_planes = 0;
 553         return VLC_EGENERIC;
 554     }
 555
 556     /* Calculate how big the new image should be */
 557     i_bytes = p_pic->format.i_bits_per_pixel *
 558         i_width_aligned * i_height_aligned / 8;
 559
 560     p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
 561
 562     if( p_pic->p_data == NULL )
 563     {
 564         p_pic->i_planes = 0;
 565         return VLC_EGENERIC;
 566     }
 567
 568     /* Fill the p_pixels field for each plane */
 569     p_pic->p[ 0 ].p_pixels = p_pic->p_data;
 570
 571     for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
 572     {
 573         p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
 574             p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
 575     }
 576
 577     return VLC_SUCCESS;
 578 }
 579
 580 /**
 581  * Initialise the video format fields given chroma/size.
 582  *
 583  * This function initializes all the video_frame_format_t fields given the
 584  * static properties of a picture (chroma and size).
 585  * \param p_format Pointer to the format structure to initialize
 586  * \param i_chroma Chroma to set
 587  * \param i_width Width to set
 588  * \param i_height Height to set
 589  * \param i_aspect Aspect ratio
 590  */
 591 void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
 592                       int i_width, int i_height, int i_aspect )
 593 {
 594     p_format->i_chroma   = i_chroma;
 595     p_format->i_width    = p_format->i_visible_width  = i_width;
 596     p_format->i_height   = p_format->i_visible_height = i_height;
 597     p_format->i_x_offset = p_format->i_y_offset = 0;
 598     p_format->i_aspect   = i_aspect;
 599
 600 #if 0
 601     /* Assume we have square pixels */
 602     if( i_width && i_height )
 603         p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
 604     else
 605         p_format->i_aspect = 0;
 606 #endif
 607
 608     switch( i_chroma )
 609     {
 610         case FOURCC_YUVA:
 611             p_format->i_bits_per_pixel = 32;
 612             break;
 613         case FOURCC_I444:
 614         case FOURCC_J444:
 615             p_format->i_bits_per_pixel = 24;
 616             break;
 617         case FOURCC_I422:
 618         case FOURCC_YUY2:
 619         case FOURCC_UYVY:
 620         case FOURCC_J422:
 621             p_format->i_bits_per_pixel = 16;
 622             break;
 623         case FOURCC_I440:
 624         case FOURCC_J440:
 625             p_format->i_bits_per_pixel = 16;
 626             break;
 627         case FOURCC_I411:
 628         case FOURCC_YV12:
 629         case FOURCC_I420:
 630         case FOURCC_J420:
 631         case FOURCC_IYUV:
 632             p_format->i_bits_per_pixel = 12;
 633             break;
 634         case FOURCC_I410:
 635         case FOURCC_YVU9:
 636             p_format->i_bits_per_pixel = 9;
 637             break;
 638         case FOURCC_Y211:
 639             p_format->i_bits_per_pixel = 8;
 640             break;
 641         case FOURCC_YUVP:
 642             p_format->i_bits_per_pixel = 8;
 643             break;
 644
 645         case FOURCC_RV32:
 646         case FOURCC_RGBA:
 647             p_format->i_bits_per_pixel = 32;
 648             break;
 649         case FOURCC_RV24:
 650             p_format->i_bits_per_pixel = 24;
 651             break;
 652         case FOURCC_RV15:
 653         case FOURCC_RV16:
 654             p_format->i_bits_per_pixel = 16;
 655             break;
 656         case FOURCC_RGB2:
 657             p_format->i_bits_per_pixel = 8;
 658             break;
 659
 660         case FOURCC_GREY:
 661         case FOURCC_Y800:
 662         case FOURCC_Y8:
 663         case FOURCC_RGBP:
 664             p_format->i_bits_per_pixel = 8;
 665             break;
 666
 667         default:
 668             p_format->i_bits_per_pixel = 0;
 669             break;
 670     }
 671 }
 672
 673 /**
 674  * Initialise the picture_t fields given chroma/size.
 675  *
 676  * This function initializes most of the picture_t fields given a chroma and
 677  * size. It makes the assumption that stride == width.
 678  * \param p_this The calling object
 679  * \param p_pic Pointer to the picture to initialize
 680  * \param i_chroma The chroma fourcc to set
 681  * \param i_width The width of the picture
 682  * \param i_height The height of the picture
 683  * \param i_aspect The aspect ratio of the picture
 684  */
 685 int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
 686                         vlc_fourcc_t i_chroma,
 687                         int i_width, int i_height, int i_aspect )
 688 {
 689     int i_index, i_width_aligned, i_height_aligned;
 690
 691     /* Store default values */
 692     for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
 693     {
 694         p_pic->p[i_index].p_pixels = NULL;
 695         p_pic->p[i_index].i_pixel_pitch = 1;
 696     }
 697
 698     p_pic->pf_release = NULL;
 699     p_pic->pf_lock = NULL;
 700     p_pic->pf_unlock = NULL;
 701     p_pic->i_refcount = 0;
 702
 703     p_pic->p_q = NULL;
 704     p_pic->i_qstride = 0;
 705     p_pic->i_qtype = 0;
 706
 707     vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
 708
 709     /* Make sure the real dimensions are a multiple of 16 */
 710     i_width_aligned = (i_width + 15) >> 4 << 4;
 711     i_height_aligned = (i_height + 15) >> 4 << 4;
 712
 713     /* Calculate coordinates */
 714     switch( i_chroma )
 715     {
 716         case FOURCC_I411:
 717             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 718             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 719             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 720             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 721             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 722             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 723             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 724             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 725             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 726             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 727             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 728             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 729             p_pic->i_planes = 3;
 730             break;
 731
 732         case FOURCC_I410:
 733         case FOURCC_YVU9:
 734             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 735             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 736             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 737             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 738             p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
 739             p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
 740             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 741             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 742             p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
 743             p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
 744             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 745             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 746             p_pic->i_planes = 3;
 747             break;
 748
 749         case FOURCC_YV12:
 750         case FOURCC_I420:
 751         case FOURCC_IYUV:
 752         case FOURCC_J420:
 753             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 754             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 755             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 756             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 757             p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 758             p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
 759             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 760             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 761             p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 762             p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
 763             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 764             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 765             p_pic->i_planes = 3;
 766             break;
 767
 768         case FOURCC_I422:
 769         case FOURCC_J422:
 770             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 771             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 772             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 773             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 774             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 775             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 776             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 777             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 778             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 779             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 780             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 781             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 782             p_pic->i_planes = 3;
 783             break;
 784
 785         case FOURCC_I440:
 786         case FOURCC_J440:
 787             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 788             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 789             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 790             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 791             p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 792             p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
 793             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
 794             p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
 795             p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 796             p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
 797             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
 798             p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
 799             p_pic->i_planes = 3;
 800             break;
 801
 802         case FOURCC_I444:
 803         case FOURCC_J444:
 804             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 805             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 806             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 807             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 808             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 809             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 810             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
 811             p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
 812             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 813             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 814             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
 815             p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
 816             p_pic->i_planes = 3;
 817             break;
 818
 819         case FOURCC_YUVA:
 820             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 821             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 822             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 823             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 824             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 825             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 826             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
 827             p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
 828             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 829             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 830             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
 831             p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
 832             p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
 833             p_pic->p[ A_PLANE ].i_visible_lines = i_height;
 834             p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
 835             p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
 836             p_pic->i_planes = 4;
 837             break;
 838
 839         case FOURCC_YUVP:
 840             p_pic->p->i_lines = i_height_aligned;
 841             p_pic->p->i_visible_lines = i_height;
 842             p_pic->p->i_pitch = i_width_aligned;
 843             p_pic->p->i_visible_pitch = i_width;
 844             p_pic->p->i_pixel_pitch = 8;
 845             p_pic->i_planes = 1;
 846             break;
 847
 848         case FOURCC_Y211:
 849             p_pic->p->i_lines = i_height_aligned;
 850             p_pic->p->i_visible_lines = i_height;
 851             p_pic->p->i_pitch = i_width_aligned;
 852             p_pic->p->i_visible_pitch = i_width;
 853             p_pic->p->i_pixel_pitch = 4;
 854             p_pic->i_planes = 1;
 855             break;
 856
 857         case FOURCC_UYVY:
 858         case FOURCC_YUY2:
 859             p_pic->p->i_lines = i_height_aligned;
 860             p_pic->p->i_visible_lines = i_height;
 861             p_pic->p->i_pitch = i_width_aligned * 2;
 862             p_pic->p->i_visible_pitch = i_width * 2;
 863             p_pic->p->i_pixel_pitch = 4;
 864             p_pic->i_planes = 1;
 865             break;
 866
 867         case FOURCC_RGB2:
 868             p_pic->p->i_lines = i_height_aligned;
 869             p_pic->p->i_visible_lines = i_height;
 870             p_pic->p->i_pitch = i_width_aligned;
 871             p_pic->p->i_visible_pitch = i_width;
 872             p_pic->p->i_pixel_pitch = 1;
 873             p_pic->i_planes = 1;
 874             break;
 875
 876         case FOURCC_RV15:
 877             p_pic->p->i_lines = i_height_aligned;
 878             p_pic->p->i_visible_lines = i_height;
 879             p_pic->p->i_pitch = i_width_aligned * 2;
 880             p_pic->p->i_visible_pitch = i_width * 2;
 881             p_pic->p->i_pixel_pitch = 2;
 882             p_pic->i_planes = 1;
 883             break;
 884
 885         case FOURCC_RV16:
 886             p_pic->p->i_lines = i_height_aligned;
 887             p_pic->p->i_visible_lines = i_height;
 888             p_pic->p->i_pitch = i_width_aligned * 2;
 889             p_pic->p->i_visible_pitch = i_width * 2;
 890             p_pic->p->i_pixel_pitch = 2;
 891             p_pic->i_planes = 1;
 892             break;
 893
 894         case FOURCC_RV24:
 895             p_pic->p->i_lines = i_height_aligned;
 896             p_pic->p->i_visible_lines = i_height;
 897             p_pic->p->i_pitch = i_width_aligned * 3;
 898             p_pic->p->i_visible_pitch = i_width * 3;
 899             p_pic->p->i_pixel_pitch = 3;
 900             p_pic->i_planes = 1;
 901             break;
 902
 903         case FOURCC_RV32:
 904         case FOURCC_RGBA:
 905             p_pic->p->i_lines = i_height_aligned;
 906             p_pic->p->i_visible_lines = i_height;
 907             p_pic->p->i_pitch = i_width_aligned * 4;
 908             p_pic->p->i_visible_pitch = i_width * 4;
 909             p_pic->p->i_pixel_pitch = 4;
 910             p_pic->i_planes = 1;
 911             break;
 912
 913         case FOURCC_GREY:
 914         case FOURCC_Y800:
 915         case FOURCC_Y8:
 916         case FOURCC_RGBP:
 917             p_pic->p->i_lines = i_height_aligned;
 918             p_pic->p->i_visible_lines = i_height;
 919             p_pic->p->i_pitch = i_width_aligned;
 920             p_pic->p->i_visible_pitch = i_width;
 921             p_pic->p->i_pixel_pitch = 1;
 922             p_pic->i_planes = 1;
 923             break;
 924
 925         default:
 926             if( p_this )
 927                 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
 928                                  i_chroma, (char*)&i_chroma );
 929             p_pic->i_planes = 0;
 930             return VLC_EGENERIC;
 931     }
 932
 933     return VLC_SUCCESS;
 934 }
 935
 936 /**
 937  * Compare two chroma values
 938  *
 939  * This function returns 1 if the two fourcc values given as argument are
 940  * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
 941  */
 942 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
 943 {
 944     /* If they are the same, they are the same ! */
 945     if( i_chroma == i_amorhc )
 946     {
 947         return 1;
 948     }
 949
 950     /* Check for equivalence classes */
 951     switch( i_chroma )
 952     {
 953         case FOURCC_I420:
 954         case FOURCC_IYUV:
 955         case FOURCC_YV12:
 956             switch( i_amorhc )
 957             {
 958                 case FOURCC_I420:
 959                 case FOURCC_IYUV:
 960                 case FOURCC_YV12:
 961                     return 1;
 962
 963                 default:
 964                     return 0;
 965             }
 966
 967         case FOURCC_UYVY:
 968         case FOURCC_UYNV:
 969         case FOURCC_Y422:
 970             switch( i_amorhc )
 971             {
 972                 case FOURCC_UYVY:
 973                 case FOURCC_UYNV:
 974                 case FOURCC_Y422:
 975                     return 1;
 976
 977                 default:
 978                     return 0;
 979             }
 980
 981         case FOURCC_YUY2:
 982         case FOURCC_YUNV:
 983             switch( i_amorhc )
 984             {
 985                 case FOURCC_YUY2:
 986                 case FOURCC_YUNV:
 987                     return 1;
 988
 989                 default:
 990                     return 0;
 991             }
 992
 993         case FOURCC_GREY:
 994         case FOURCC_Y800:
 995         case FOURCC_Y8:
 996             switch( i_amorhc )
 997             {
 998                 case FOURCC_GREY:
 999                 case FOURCC_Y800:
1000                 case FOURCC_Y8:
1001                     return 1;
1002
1003                 default:
1004                     return 0;
1005             }
1006
1007         default:
1008             return 0;
1009     }
1010 }
1011
1012 /*****************************************************************************
1013  *
1014  *****************************************************************************/
1015 static void PictureReleaseCallback( picture_t *p_picture )
1016 {
1017     if( --p_picture->i_refcount > 0 )
1018         return;
1019     picture_Delete( p_picture );
1020 }
1021 /*****************************************************************************
1022  *
1023  *****************************************************************************/
1024 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
1025 {
1026     picture_t *p_picture = malloc( sizeof(*p_picture) );
1027
1028     if( !p_picture )
1029         return NULL;
1030
1031     memset( p_picture, 0, sizeof(*p_picture) );
1032     if( __vout_AllocatePicture( NULL, p_picture,
1033                                 i_chroma, i_width, i_height, i_aspect ) )
1034     {
1035         free( p_picture );
1036         return NULL;
1037     }
1038
1039     p_picture->i_refcount = 1;
1040     p_picture->pf_release = PictureReleaseCallback;
1041     p_picture->i_status = RESERVED_PICTURE;
1042
1043     return p_picture;
1044 }
1045
1046 /*****************************************************************************
1047  *
1048  *****************************************************************************/
1049 void picture_Delete( picture_t *p_picture )
1050 {
1051     assert( p_picture && p_picture->i_refcount == 0 );
1052
1053     free( p_picture->p_q );
1054     free( p_picture->p_data_orig );
1055     free( p_picture->p_sys );
1056     free( p_picture );
1057 }
1058
1059 /*****************************************************************************
1060  *
1061  *****************************************************************************/
1062 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
1063 {
1064     int i;
1065
1066     for( i = 0; i < p_src->i_planes ; i++ )
1067         plane_CopyPixels( p_dst->p+i, p_src->p+i );
1068 }
1069
1070 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
1071 {
1072     const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
1073                                      p_src->i_visible_pitch );
1074     const unsigned i_height = __MIN( p_dst->i_visible_lines,
1075                                      p_src->i_visible_lines );
1076
1077     if( p_src->i_pitch == p_dst->i_pitch )
1078     {
1079         /* There are margins, but with the same width : perfect ! */
1080         vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
1081                     p_src->i_pitch * i_height );
1082     }
1083     else
1084     {
1085         /* We need to proceed line by line */
1086         uint8_t *p_in = p_src->p_pixels;
1087         uint8_t *p_out = p_dst->p_pixels;
1088         int i_line;
1089
1090         assert( p_in );
1091         assert( p_out );
1092
1093         for( i_line = i_height; i_line--; )
1094         {
1095             vlc_memcpy( p_out, p_in, i_width );
1096             p_in += p_src->i_pitch;
1097             p_out += p_dst->i_pitch;
1098         }
1099     }
1100 }
1101
1102 /*****************************************************************************
1103  *
1104  *****************************************************************************/
1105