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