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