git.sesse.net Git - vlc/blob - src/video_output/vout_pictures.c

   1 /*****************************************************************************
   2  * vout_pictures.c : picture management functions
   3  *****************************************************************************
   4  * Copyright (C) 2000-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Vincent Seguin <seguin@via.ecp.fr>
   8  *          Samuel Hocevar <sam@zoy.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32 #include <assert.h>
  33
  34 #include <vlc_common.h>
  35 #include <libvlc.h>
  36 #include <vlc_vout.h>
  37 #include <vlc_osd.h>
  38 #include <vlc_filter.h>
  39 #include "vout_pictures.h"
  40 #include "vout_internal.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         vlc_cond_signal( &p_vout->p->picture_wait );
  56     }
  57     else
  58     {
  59         msg_Err( p_vout, "picture to display %p has invalid status %d",
  60                          p_pic, p_pic->i_status );
  61     }
  62     p_vout->p->i_picture_qtype = p_pic->i_qtype;
  63
  64     vlc_mutex_unlock( &p_vout->picture_lock );
  65 }
  66
  67 /**
  68  * Allocate a picture in the video output heap.
  69  *
  70  * This function creates a reserved image in the video output heap.
  71  * A null pointer is returned if the function fails. This method provides an
  72  * already allocated zone of memory in the picture data fields.
  73  * It needs locking since several pictures can be created by several producers
  74  * threads.
  75  */
  76 int vout_CountPictureAvailable( vout_thread_t *p_vout )
  77 {
  78     int i_free = 0;
  79     int i_pic;
  80
  81     vlc_mutex_lock( &p_vout->picture_lock );
  82     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
  83     {
  84         picture_t *p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1) % I_RENDERPICTURES];
  85
  86         switch( p_pic->i_status )
  87         {
  88             case DESTROYED_PICTURE:
  89                 i_free++;
  90                 break;
  91
  92             case FREE_PICTURE:
  93                 i_free++;
  94                 break;
  95
  96             default:
  97                 break;
  98         }
  99     }
 100     vlc_mutex_unlock( &p_vout->picture_lock );
 101
 102     return i_free;
 103 }
 104
 105 picture_t *vout_CreatePicture( vout_thread_t *p_vout,
 106                                bool b_progressive,
 107                                bool b_top_field_first,
 108                                unsigned int i_nb_fields )
 109 {
 110     int         i_pic;                                      /* picture index */
 111     picture_t * p_pic;
 112     picture_t * p_freepic = NULL;                      /* first free picture */
 113
 114     /* Get lock */
 115     vlc_mutex_lock( &p_vout->picture_lock );
 116
 117     /*
 118      * Look for an empty place in the picture heap.
 119      */
 120     for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
 121     {
 122         p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
 123                                  % I_RENDERPICTURES];
 124
 125         switch( p_pic->i_status )
 126         {
 127             case DESTROYED_PICTURE:
 128                 /* Memory will not be reallocated, and function can end
 129                  * immediately - this is the best possible case, since no
 130                  * memory allocation needs to be done */
 131                 p_pic->i_status   = RESERVED_PICTURE;
 132                 p_pic->i_refcount = 0;
 133                 p_pic->b_force    = 0;
 134
 135                 p_pic->b_progressive        = b_progressive;
 136                 p_pic->i_nb_fields          = i_nb_fields;
 137                 p_pic->b_top_field_first    = b_top_field_first;
 138
 139                 p_vout->i_heap_size++;
 140                 p_vout->render.i_last_used_pic =
 141                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 142                     % I_RENDERPICTURES;
 143                 vlc_mutex_unlock( &p_vout->picture_lock );
 144                 return( p_pic );
 145
 146             case FREE_PICTURE:
 147                 /* Picture is empty and ready for allocation */
 148                 p_vout->render.i_last_used_pic =
 149                     ( p_vout->render.i_last_used_pic + i_pic + 1 )
 150                     % I_RENDERPICTURES;
 151                 p_freepic = p_pic;
 152                 break;
 153
 154             default:
 155                 break;
 156         }
 157     }
 158
 159     /*
 160      * Prepare picture
 161      */
 162     if( p_freepic != NULL )
 163     {
 164         vout_AllocatePicture( VLC_OBJECT(p_vout),
 165                               p_freepic, p_vout->render.i_chroma,
 166                               p_vout->render.i_width, p_vout->render.i_height,
 167                               p_vout->render.i_aspect );
 168
 169         if( p_freepic->i_planes )
 170         {
 171             /* Copy picture information, set some default values */
 172             p_freepic->i_status   = RESERVED_PICTURE;
 173             p_freepic->i_type     = MEMORY_PICTURE;
 174             p_freepic->b_slow     = 0;
 175
 176             p_freepic->i_refcount = 0;
 177             p_freepic->b_force = 0;
 178
 179             p_freepic->b_progressive        = b_progressive;
 180             p_freepic->i_nb_fields          = i_nb_fields;
 181             p_freepic->b_top_field_first    = b_top_field_first;
 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 static void DestroyPicture( vout_thread_t *p_vout, picture_t *p_picture )
 208 {
 209     vlc_assert_locked( &p_vout->picture_lock );
 210
 211     p_picture->i_status = DESTROYED_PICTURE;
 212     p_vout->i_heap_size--;
 213     picture_CleanupQuant( p_picture );
 214
 215     vlc_cond_signal( &p_vout->p->picture_wait );
 216 }
 217
 218 /**
 219  * Remove a permanent or reserved picture from the heap
 220  *
 221  * This function frees a previously reserved picture or a permanent
 222  * picture. It is meant to be used when the construction of a picture aborted.
 223  * Note that the picture will be destroyed even if it is linked !
 224  *
 225  * TODO remove it, vout_DropPicture should be used instead
 226  */
 227 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 228 {
 229 #ifndef NDEBUG
 230     /* Check if picture status is valid */
 231     vlc_mutex_lock( &p_vout->picture_lock );
 232     if( p_pic->i_status != RESERVED_PICTURE )
 233     {
 234         msg_Err( p_vout, "picture to destroy %p has invalid status %d",
 235                          p_pic, p_pic->i_status );
 236     }
 237     vlc_mutex_unlock( &p_vout->picture_lock );
 238 #endif
 239
 240     vout_DropPicture( p_vout, p_pic );
 241 }
 242
 243 /* */
 244 void vout_UsePictureLocked( vout_thread_t *p_vout, picture_t *p_picture )
 245 {
 246     vlc_assert_locked( &p_vout->picture_lock );
 247     if( p_picture->i_refcount > 0 )
 248     {
 249         /* Pretend we displayed the picture, but don't destroy
 250          * it since the decoder might still need it. */
 251         p_picture->i_status = DISPLAYED_PICTURE;
 252     }
 253     else
 254     {
 255         /* Destroy the picture without displaying it */
 256         DestroyPicture( p_vout, p_picture );
 257     }
 258 }
 259
 260 /* */
 261 void vout_DropPicture( vout_thread_t *p_vout, picture_t *p_pic  )
 262 {
 263     vlc_mutex_lock( &p_vout->picture_lock );
 264
 265     if( p_pic->i_status == READY_PICTURE )
 266     {
 267         /* Grr cannot destroy ready picture by myself so be sure vout won't like it */
 268         p_pic->date = 1;
 269         vlc_cond_signal( &p_vout->p->picture_wait );
 270     }
 271     else
 272     {
 273         vout_UsePictureLocked( p_vout, p_pic );
 274     }
 275
 276     vlc_mutex_unlock( &p_vout->picture_lock );
 277 }
 278
 279 /**
 280  * Increment reference counter of a picture
 281  *
 282  * This function increments the reference counter of a picture in the video
 283  * heap. It needs a lock since several producer threads can access the picture.
 284  */
 285 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 286 {
 287     vlc_mutex_lock( &p_vout->picture_lock );
 288     p_pic->i_refcount++;
 289     vlc_mutex_unlock( &p_vout->picture_lock );
 290 }
 291
 292 /**
 293  * Decrement reference counter of a picture
 294  *
 295  * This function decrement the reference counter of a picture in the video heap
 296  */
 297 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 298 {
 299     vlc_mutex_lock( &p_vout->picture_lock );
 300
 301     if( p_pic->i_refcount > 0 )
 302         p_pic->i_refcount--;
 303     else
 304         msg_Err( p_vout, "Invalid picture reference count (%p, %d)",
 305                  p_pic, p_pic->i_refcount );
 306
 307     if( p_pic->i_refcount == 0 && p_pic->i_status == DISPLAYED_PICTURE )
 308         DestroyPicture( p_vout, p_pic );
 309
 310     vlc_mutex_unlock( &p_vout->picture_lock );
 311 }
 312
 313 static int vout_LockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 314 {
 315     if( p_picture->pf_lock )
 316         return p_picture->pf_lock( p_vout, p_picture );
 317     return VLC_SUCCESS;
 318 }
 319 static void vout_UnlockPicture( vout_thread_t *p_vout, picture_t *p_picture )
 320 {
 321     if( p_picture->pf_unlock )
 322         p_picture->pf_unlock( p_vout, p_picture );
 323 }
 324
 325 /**
 326  * Render a picture
 327  *
 328  * This function chooses whether the current picture needs to be copied
 329  * before rendering, does the subpicture magic, and tells the video output
 330  * thread which direct buffer needs to be displayed.
 331  */
 332 picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
 333                                subpicture_t *p_subpic, bool b_paused )
 334 {
 335     if( p_pic == NULL )
 336         return NULL;
 337
 338     if( p_pic->i_type == DIRECT_PICTURE )
 339     {
 340         /* Picture is in a direct buffer. */
 341
 342         if( p_subpic != NULL )
 343         {
 344             /* We have subtitles. First copy the picture to
 345              * the spare direct buffer, then render the
 346              * subtitles. */
 347             if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 348                 return NULL;
 349
 350             picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 351
 352             spu_RenderSubpictures( p_vout->p_spu,
 353                                    PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 354                                    p_subpic, &p_vout->fmt_in, b_paused );
 355
 356             vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 357
 358             return PP_OUTPUTPICTURE[0];
 359         }
 360
 361         /* No subtitles, picture is in a directbuffer so
 362          * we can display it directly (even if it is still
 363          * in use or not). */
 364         return p_pic;
 365     }
 366
 367     /* Not a direct buffer. We either need to copy it to a direct buffer,
 368      * or render it if the chroma isn't the same. */
 369     if( p_vout->p->b_direct )
 370     {
 371         /* Picture is not in a direct buffer, but is exactly the
 372          * same size as the direct buffers. A memcpy() is enough,
 373          * then render the subtitles. */
 374
 375         if( vout_LockPicture( p_vout, PP_OUTPUTPICTURE[0] ) )
 376             return NULL;
 377
 378         picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
 379         spu_RenderSubpictures( p_vout->p_spu,
 380                                PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
 381                                p_subpic, &p_vout->fmt_in, b_paused );
 382
 383         vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 384
 385         return PP_OUTPUTPICTURE[0];
 386     }
 387
 388     /* Picture is not in a direct buffer, and needs to be converted to
 389      * another size/chroma. Then the subtitles need to be rendered as
 390      * well. This usually means software YUV, or hardware YUV with a
 391      * different chroma. */
 392
 393     if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
 394     {
 395         /* The picture buffer is in slow memory. We'll use
 396          * the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
 397          * one for subpictures rendering. */
 398         picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
 399         if( p_tmp_pic->i_status == FREE_PICTURE )
 400         {
 401             vout_AllocatePicture( VLC_OBJECT(p_vout),
 402                                   p_tmp_pic, p_vout->fmt_out.i_chroma,
 403                                   p_vout->fmt_out.i_width,
 404                                   p_vout->fmt_out.i_height,
 405                                   p_vout->fmt_out.i_aspect );
 406             p_tmp_pic->i_type = MEMORY_PICTURE;
 407             p_tmp_pic->i_status = RESERVED_PICTURE;
 408             /* some modules (such as blend)  needs to know the extra information in picture heap */
 409             p_tmp_pic->p_heap = &p_vout->output;
 410         }
 411
 412         /* Convert image to the first direct buffer */
 413         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
 414         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 415
 416         /* Render subpictures on the first direct buffer */
 417         spu_RenderSubpictures( p_vout->p_spu,
 418                                p_tmp_pic, &p_vout->fmt_out,
 419                                p_subpic, &p_vout->fmt_in, b_paused );
 420
 421         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 422             return NULL;
 423
 424         picture_Copy( &p_vout->p_picture[0], p_tmp_pic );
 425     }
 426     else
 427     {
 428         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
 429             return NULL;
 430
 431         /* Convert image to the first direct buffer */
 432         p_vout->p->p_chroma->p_owner = (filter_owner_sys_t *)&p_vout->p_picture[0];
 433         p_vout->p->p_chroma->pf_video_filter( p_vout->p->p_chroma, p_pic );
 434
 435         /* Render subpictures on the first direct buffer */
 436         spu_RenderSubpictures( p_vout->p_spu,
 437                                &p_vout->p_picture[0], &p_vout->fmt_out,
 438                                p_subpic, &p_vout->fmt_in, b_paused );
 439     }
 440
 441     vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );
 442
 443     return &p_vout->p_picture[0];
 444 }
 445
 446 /**
 447  * Calculate image window coordinates
 448  *
 449  * This function will be accessed by plugins. It calculates the relative
 450  * position of the output window and the image window.
 451  */
 452 void vout_PlacePicture( const vout_thread_t *p_vout,
 453                         unsigned int i_width, unsigned int i_height,
 454                         unsigned int *restrict pi_x,
 455                         unsigned int *restrict pi_y,
 456                         unsigned int *restrict pi_width,
 457                         unsigned int *restrict pi_height )
 458 {
 459     if( i_width <= 0 || i_height <= 0 )
 460     {
 461         *pi_width = *pi_height = *pi_x = *pi_y = 0;
 462         return;
 463     }
 464
 465     if( p_vout->b_autoscale )
 466     {
 467         *pi_width = i_width;
 468         *pi_height = i_height;
 469     }
 470     else
 471     {
 472         int i_zoom = p_vout->i_zoom;
 473         /* be realistic, scaling factor confined between .2 and 10. */
 474         if( i_zoom > 10 * ZOOM_FP_FACTOR )      i_zoom = 10 * ZOOM_FP_FACTOR;
 475         else if( i_zoom <  ZOOM_FP_FACTOR / 5 ) i_zoom = ZOOM_FP_FACTOR / 5;
 476
 477         unsigned int i_original_width, i_original_height;
 478
 479         if( p_vout->fmt_in.i_sar_num >= p_vout->fmt_in.i_sar_den )
 480         {
 481             i_original_width = p_vout->fmt_in.i_visible_width *
 482                                p_vout->fmt_in.i_sar_num / p_vout->fmt_in.i_sar_den;
 483             i_original_height =  p_vout->fmt_in.i_visible_height;
 484         }
 485         else
 486         {
 487             i_original_width =  p_vout->fmt_in.i_visible_width;
 488             i_original_height = p_vout->fmt_in.i_visible_height *
 489                                 p_vout->fmt_in.i_sar_den / p_vout->fmt_in.i_sar_num;
 490         }
 491 #ifdef WIN32
 492         /* On windows, inner video window exceeding container leads to black screen */
 493         *pi_width = __MIN( i_width, i_original_width * i_zoom / ZOOM_FP_FACTOR );
 494         *pi_height = __MIN( i_height, i_original_height * i_zoom / ZOOM_FP_FACTOR );
 495 #else
 496         *pi_width = i_original_width * i_zoom / ZOOM_FP_FACTOR ;
 497         *pi_height = i_original_height * i_zoom / ZOOM_FP_FACTOR ;
 498 #endif
 499     }
 500
 501     int64_t i_scaled_width = p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
 502                               *pi_height / p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
 503     int64_t i_scaled_height = p_vout->fmt_in.i_visible_height * (int64_t)p_vout->fmt_in.i_sar_den *
 504                                *pi_width / p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
 505
 506     if( i_scaled_width <= 0 || i_scaled_height <= 0 )
 507     {
 508         msg_Warn( p_vout, "ignoring broken aspect ratio" );
 509         i_scaled_width = *pi_width;
 510         i_scaled_height = *pi_height;
 511     }
 512
 513     if( i_scaled_width > *pi_width )
 514         *pi_height = i_scaled_height;
 515     else
 516         *pi_width = i_scaled_width;
 517
 518     switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
 519     {
 520     case VOUT_ALIGN_LEFT:
 521         *pi_x = 0;
 522         break;
 523     case VOUT_ALIGN_RIGHT:
 524         *pi_x = i_width - *pi_width;
 525         break;
 526     default:
 527         *pi_x = ( i_width - *pi_width ) / 2;
 528     }
 529
 530     switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
 531     {
 532     case VOUT_ALIGN_TOP:
 533         *pi_y = 0;
 534         break;
 535     case VOUT_ALIGN_BOTTOM:
 536         *pi_y = i_height - *pi_height;
 537         break;
 538     default:
 539         *pi_y = ( i_height - *pi_height ) / 2;
 540     }
 541 }
 542
 543 /**
 544  * Allocate a new picture in the heap.
 545  *
 546  * This function allocates a fake direct buffer in memory, which can be
 547  * used exactly like a video buffer. The video output thread then manages
 548  * how it gets displayed.
 549  */
 550 int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
 551                             vlc_fourcc_t i_chroma,
 552                             int i_width, int i_height, int i_aspect )
 553 {
 554     int i_bytes, i_index, i_width_aligned, i_height_aligned;
 555
 556     /* Make sure the real dimensions are a multiple of 16 */
 557     i_width_aligned = (i_width + 15) >> 4 << 4;
 558     i_height_aligned = (i_height + 15) >> 4 << 4;
 559
 560     if( vout_InitPicture( p_this, p_pic, i_chroma,
 561                           i_width, i_height, i_aspect ) != VLC_SUCCESS )
 562     {
 563         p_pic->i_planes = 0;
 564         return VLC_EGENERIC;
 565     }
 566
 567     /* Calculate how big the new image should be */
 568     i_bytes = p_pic->format.i_bits_per_pixel *
 569         i_width_aligned * i_height_aligned / 8;
 570
 571     p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
 572
 573     if( p_pic->p_data == NULL )
 574     {
 575         p_pic->i_planes = 0;
 576         return VLC_EGENERIC;
 577     }
 578
 579     /* Fill the p_pixels field for each plane */
 580     p_pic->p[ 0 ].p_pixels = p_pic->p_data;
 581
 582     for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
 583     {
 584         p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
 585             p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
 586     }
 587
 588     return VLC_SUCCESS;
 589 }
 590
 591 /**
 592  * Initialise the video format fields given chroma/size.
 593  *
 594  * This function initializes all the video_frame_format_t fields given the
 595  * static properties of a picture (chroma and size).
 596  * \param p_format Pointer to the format structure to initialize
 597  * \param i_chroma Chroma to set
 598  * \param i_width Width to set
 599  * \param i_height Height to set
 600  * \param i_aspect Aspect ratio
 601  */
 602 void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
 603                       int i_width, int i_height, int i_aspect )
 604 {
 605     p_format->i_chroma   = i_chroma;
 606     p_format->i_width    = p_format->i_visible_width  = i_width;
 607     p_format->i_height   = p_format->i_visible_height = i_height;
 608     p_format->i_x_offset = p_format->i_y_offset = 0;
 609     p_format->i_aspect   = i_aspect;
 610
 611 #if 0
 612     /* Assume we have square pixels */
 613     if( i_width && i_height )
 614         p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
 615     else
 616         p_format->i_aspect = 0;
 617 #endif
 618
 619     switch( i_chroma )
 620     {
 621         case FOURCC_YUVA:
 622             p_format->i_bits_per_pixel = 32;
 623             break;
 624         case FOURCC_I444:
 625         case FOURCC_J444:
 626             p_format->i_bits_per_pixel = 24;
 627             break;
 628         case FOURCC_I422:
 629         case FOURCC_YUY2:
 630         case FOURCC_UYVY:
 631         case FOURCC_J422:
 632             p_format->i_bits_per_pixel = 16;
 633             break;
 634         case FOURCC_I440:
 635         case FOURCC_J440:
 636             p_format->i_bits_per_pixel = 16;
 637             break;
 638         case FOURCC_I411:
 639         case FOURCC_YV12:
 640         case FOURCC_I420:
 641         case FOURCC_J420:
 642         case FOURCC_IYUV:
 643             p_format->i_bits_per_pixel = 12;
 644             break;
 645         case FOURCC_I410:
 646         case FOURCC_YVU9:
 647             p_format->i_bits_per_pixel = 9;
 648             break;
 649         case FOURCC_Y211:
 650             p_format->i_bits_per_pixel = 8;
 651             break;
 652         case FOURCC_YUVP:
 653             p_format->i_bits_per_pixel = 8;
 654             break;
 655
 656         case FOURCC_RV32:
 657         case FOURCC_RGBA:
 658             p_format->i_bits_per_pixel = 32;
 659             break;
 660         case FOURCC_RV24:
 661             p_format->i_bits_per_pixel = 24;
 662             break;
 663         case FOURCC_RV15:
 664         case FOURCC_RV16:
 665             p_format->i_bits_per_pixel = 16;
 666             break;
 667         case FOURCC_RGB2:
 668             p_format->i_bits_per_pixel = 8;
 669             break;
 670
 671         case FOURCC_GREY:
 672         case FOURCC_Y800:
 673         case FOURCC_Y8:
 674         case FOURCC_RGBP:
 675             p_format->i_bits_per_pixel = 8;
 676             break;
 677
 678         default:
 679             p_format->i_bits_per_pixel = 0;
 680             break;
 681     }
 682 }
 683
 684 /**
 685  * Initialise the picture_t fields given chroma/size.
 686  *
 687  * This function initializes most of the picture_t fields given a chroma and
 688  * size. It makes the assumption that stride == width.
 689  * \param p_this The calling object
 690  * \param p_pic Pointer to the picture to initialize
 691  * \param i_chroma The chroma fourcc to set
 692  * \param i_width The width of the picture
 693  * \param i_height The height of the picture
 694  * \param i_aspect The aspect ratio of the picture
 695  */
 696 int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
 697                         vlc_fourcc_t i_chroma,
 698                         int i_width, int i_height, int i_aspect )
 699 {
 700     int i_index, i_width_aligned, i_height_aligned;
 701
 702     /* Store default values */
 703     for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
 704     {
 705         p_pic->p[i_index].p_pixels = NULL;
 706         p_pic->p[i_index].i_pixel_pitch = 1;
 707     }
 708
 709     p_pic->pf_release = NULL;
 710     p_pic->pf_lock = NULL;
 711     p_pic->pf_unlock = NULL;
 712     p_pic->i_refcount = 0;
 713
 714     p_pic->i_qtype = QTYPE_NONE;
 715     p_pic->i_qstride = 0;
 716     p_pic->p_q = NULL;
 717
 718     vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
 719
 720     /* Make sure the real dimensions are a multiple of 16 */
 721     i_width_aligned = (i_width + 15) >> 4 << 4;
 722     i_height_aligned = (i_height + 15) >> 4 << 4;
 723
 724     /* Calculate coordinates */
 725     switch( i_chroma )
 726     {
 727         case FOURCC_I411:
 728             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 729             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 730             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 731             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 732             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 733             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 734             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 735             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 736             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 737             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 738             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 739             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 740             p_pic->i_planes = 3;
 741             break;
 742
 743         case FOURCC_I410:
 744         case FOURCC_YVU9:
 745             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 746             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 747             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 748             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 749             p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
 750             p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
 751             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
 752             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
 753             p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
 754             p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
 755             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
 756             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
 757             p_pic->i_planes = 3;
 758             break;
 759
 760         case FOURCC_YV12:
 761         case FOURCC_I420:
 762         case FOURCC_IYUV:
 763         case FOURCC_J420:
 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 / 2;
 769             p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
 770             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 771             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 772             p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 773             p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
 774             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 775             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 776             p_pic->i_planes = 3;
 777             break;
 778
 779         case FOURCC_I422:
 780         case FOURCC_J422:
 781             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 782             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 783             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 784             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 785             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 786             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 787             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
 788             p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
 789             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 790             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 791             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
 792             p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
 793             p_pic->i_planes = 3;
 794             break;
 795
 796         case FOURCC_I440:
 797         case FOURCC_J440:
 798             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 799             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 800             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 801             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 802             p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
 803             p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
 804             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
 805             p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
 806             p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
 807             p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
 808             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
 809             p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
 810             p_pic->i_planes = 3;
 811             break;
 812
 813         case FOURCC_I444:
 814         case FOURCC_J444:
 815             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 816             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 817             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 818             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 819             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 820             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 821             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
 822             p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
 823             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 824             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 825             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
 826             p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
 827             p_pic->i_planes = 3;
 828             break;
 829
 830         case FOURCC_YUVA:
 831             p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
 832             p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
 833             p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
 834             p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
 835             p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
 836             p_pic->p[ U_PLANE ].i_visible_lines = i_height;
 837             p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
 838             p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
 839             p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
 840             p_pic->p[ V_PLANE ].i_visible_lines = i_height;
 841             p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
 842             p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
 843             p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
 844             p_pic->p[ A_PLANE ].i_visible_lines = i_height;
 845             p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
 846             p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
 847             p_pic->i_planes = 4;
 848             break;
 849
 850         case FOURCC_YUVP:
 851             p_pic->p->i_lines = i_height_aligned;
 852             p_pic->p->i_visible_lines = i_height;
 853             p_pic->p->i_pitch = i_width_aligned;
 854             p_pic->p->i_visible_pitch = i_width;
 855             p_pic->p->i_pixel_pitch = 8;
 856             p_pic->i_planes = 1;
 857             break;
 858
 859         case FOURCC_Y211:
 860             p_pic->p->i_lines = i_height_aligned;
 861             p_pic->p->i_visible_lines = i_height;
 862             p_pic->p->i_pitch = i_width_aligned;
 863             p_pic->p->i_visible_pitch = i_width;
 864             p_pic->p->i_pixel_pitch = 4;
 865             p_pic->i_planes = 1;
 866             break;
 867
 868         case FOURCC_UYVY:
 869         case FOURCC_YUY2:
 870             p_pic->p->i_lines = i_height_aligned;
 871             p_pic->p->i_visible_lines = i_height;
 872             p_pic->p->i_pitch = i_width_aligned * 2;
 873             p_pic->p->i_visible_pitch = i_width * 2;
 874             p_pic->p->i_pixel_pitch = 4;
 875             p_pic->i_planes = 1;
 876             break;
 877
 878         case FOURCC_RGB2:
 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         case FOURCC_RV15:
 888             p_pic->p->i_lines = i_height_aligned;
 889             p_pic->p->i_visible_lines = i_height;
 890             p_pic->p->i_pitch = i_width_aligned * 2;
 891             p_pic->p->i_visible_pitch = i_width * 2;
 892             p_pic->p->i_pixel_pitch = 2;
 893             p_pic->i_planes = 1;
 894             break;
 895
 896         case FOURCC_RV16:
 897             p_pic->p->i_lines = i_height_aligned;
 898             p_pic->p->i_visible_lines = i_height;
 899             p_pic->p->i_pitch = i_width_aligned * 2;
 900             p_pic->p->i_visible_pitch = i_width * 2;
 901             p_pic->p->i_pixel_pitch = 2;
 902             p_pic->i_planes = 1;
 903             break;
 904
 905         case FOURCC_RV24:
 906             p_pic->p->i_lines = i_height_aligned;
 907             p_pic->p->i_visible_lines = i_height;
 908             p_pic->p->i_pitch = i_width_aligned * 3;
 909             p_pic->p->i_visible_pitch = i_width * 3;
 910             p_pic->p->i_pixel_pitch = 3;
 911             p_pic->i_planes = 1;
 912             break;
 913
 914         case FOURCC_RV32:
 915         case FOURCC_RGBA:
 916             p_pic->p->i_lines = i_height_aligned;
 917             p_pic->p->i_visible_lines = i_height;
 918             p_pic->p->i_pitch = i_width_aligned * 4;
 919             p_pic->p->i_visible_pitch = i_width * 4;
 920             p_pic->p->i_pixel_pitch = 4;
 921             p_pic->i_planes = 1;
 922             break;
 923
 924         case FOURCC_GREY:
 925         case FOURCC_Y800:
 926         case FOURCC_Y8:
 927         case FOURCC_RGBP:
 928             p_pic->p->i_lines = i_height_aligned;
 929             p_pic->p->i_visible_lines = i_height;
 930             p_pic->p->i_pitch = i_width_aligned;
 931             p_pic->p->i_visible_pitch = i_width;
 932             p_pic->p->i_pixel_pitch = 1;
 933             p_pic->i_planes = 1;
 934             break;
 935
 936         default:
 937             if( p_this )
 938                 msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
 939                                  i_chroma, (char*)&i_chroma );
 940             p_pic->i_planes = 0;
 941             return VLC_EGENERIC;
 942     }
 943
 944     return VLC_SUCCESS;
 945 }
 946
 947 /**
 948  * Compare two chroma values
 949  *
 950  * This function returns 1 if the two fourcc values given as argument are
 951  * the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
 952  */
 953 int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t i_amorhc )
 954 {
 955     /* If they are the same, they are the same ! */
 956     if( i_chroma == i_amorhc )
 957     {
 958         return 1;
 959     }
 960
 961     /* Check for equivalence classes */
 962     switch( i_chroma )
 963     {
 964         case FOURCC_I420:
 965         case FOURCC_IYUV:
 966         case FOURCC_YV12:
 967             switch( i_amorhc )
 968             {
 969                 case FOURCC_I420:
 970                 case FOURCC_IYUV:
 971                 case FOURCC_YV12:
 972                     return 1;
 973
 974                 default:
 975                     return 0;
 976             }
 977
 978         case FOURCC_UYVY:
 979         case FOURCC_UYNV:
 980         case FOURCC_Y422:
 981             switch( i_amorhc )
 982             {
 983                 case FOURCC_UYVY:
 984                 case FOURCC_UYNV:
 985                 case FOURCC_Y422:
 986                     return 1;
 987
 988                 default:
 989                     return 0;
 990             }
 991
 992         case FOURCC_YUY2:
 993         case FOURCC_YUNV:
 994             switch( i_amorhc )
 995             {
 996                 case FOURCC_YUY2:
 997                 case FOURCC_YUNV:
 998                     return 1;
 999
1000                 default:
1001                     return 0;
1002             }
1003
1004         case FOURCC_GREY:
1005         case FOURCC_Y800:
1006         case FOURCC_Y8:
1007             switch( i_amorhc )
1008             {
1009                 case FOURCC_GREY:
1010                 case FOURCC_Y800:
1011                 case FOURCC_Y8:
1012                     return 1;
1013
1014                 default:
1015                     return 0;
1016             }
1017
1018         default:
1019             return 0;
1020     }
1021 }
1022
1023 /*****************************************************************************
1024  *
1025  *****************************************************************************/
1026 static void PictureReleaseCallback( picture_t *p_picture )
1027 {
1028     if( --p_picture->i_refcount > 0 )
1029         return;
1030     picture_Delete( p_picture );
1031 }
1032 /*****************************************************************************
1033  *
1034  *****************************************************************************/
1035 picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
1036 {
1037     picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
1038     if( !p_picture )
1039         return NULL;
1040
1041     if( __vout_AllocatePicture( NULL, p_picture,
1042                                 i_chroma, i_width, i_height, i_aspect ) )
1043     {
1044         free( p_picture );
1045         return NULL;
1046     }
1047
1048     p_picture->i_refcount = 1;
1049     p_picture->pf_release = PictureReleaseCallback;
1050     p_picture->i_status = RESERVED_PICTURE;
1051
1052     return p_picture;
1053 }
1054
1055 /*****************************************************************************
1056  *
1057  *****************************************************************************/
1058 void picture_Delete( picture_t *p_picture )
1059 {
1060     assert( p_picture && p_picture->i_refcount == 0 );
1061
1062     free( p_picture->p_q );
1063     free( p_picture->p_data_orig );
1064     free( p_picture->p_sys );
1065     free( p_picture );
1066 }
1067
1068 /*****************************************************************************
1069  *
1070  *****************************************************************************/
1071 void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
1072 {
1073     int i;
1074
1075     for( i = 0; i < p_src->i_planes ; i++ )
1076         plane_CopyPixels( p_dst->p+i, p_src->p+i );
1077 }
1078
1079 void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
1080 {
1081     const unsigned i_width  = __MIN( p_dst->i_visible_pitch,
1082                                      p_src->i_visible_pitch );
1083     const unsigned i_height = __MIN( p_dst->i_visible_lines,
1084                                      p_src->i_visible_lines );
1085
1086     if( p_src->i_pitch == p_dst->i_pitch )
1087     {
1088         /* There are margins, but with the same width : perfect ! */
1089         vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
1090                     p_src->i_pitch * i_height );
1091     }
1092     else
1093     {
1094         /* We need to proceed line by line */
1095         uint8_t *p_in = p_src->p_pixels;
1096         uint8_t *p_out = p_dst->p_pixels;
1097         int i_line;
1098
1099         assert( p_in );
1100         assert( p_out );
1101
1102         for( i_line = i_height; i_line--; )
1103         {
1104             vlc_memcpy( p_out, p_in, i_width );
1105             p_in += p_src->i_pitch;
1106             p_out += p_dst->i_pitch;
1107         }
1108     }
1109 }
1110
1111 /*****************************************************************************
1112  *
1113  *****************************************************************************/
1114