git.sesse.net Git - vlc/blob - modules/video_filter/transform.c

   1 /*****************************************************************************
   2  * transform.c : transform image module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc_vout.h>
  30
  31 #include "filter_common.h"
  32 #include "filter_picture.h"
  33
  34 #define TRANSFORM_MODE_HFLIP   1
  35 #define TRANSFORM_MODE_VFLIP   2
  36 #define TRANSFORM_MODE_90      3
  37 #define TRANSFORM_MODE_180     4
  38 #define TRANSFORM_MODE_270     5
  39
  40 /*****************************************************************************
  41  * Local prototypes
  42  *****************************************************************************/
  43 static int  Create    ( vlc_object_t * );
  44 static void Destroy   ( vlc_object_t * );
  45
  46 static int  Init      ( vout_thread_t * );
  47 static void End       ( vout_thread_t * );
  48 static void Render    ( vout_thread_t *, picture_t * );
  49
  50 static void FilterPlanar( vout_thread_t *, const picture_t *, picture_t * );
  51 static void FilterYUYV( vout_thread_t *, const picture_t *, picture_t * );
  52
  53 static int  SendEvents( vlc_object_t *, char const *,
  54                         vlc_value_t, vlc_value_t, void * );
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 #define TYPE_TEXT N_("Transform type")
  60 #define TYPE_LONGTEXT N_("One of '90', '180', '270', 'hflip' and 'vflip'")
  61
  62 static const char *type_list[] = { "90", "180", "270", "hflip", "vflip" };
  63 static const char *type_list_text[] = { N_("Rotate by 90 degrees"),
  64   N_("Rotate by 180 degrees"), N_("Rotate by 270 degrees"),
  65   N_("Flip horizontally"), N_("Flip vertically") };
  66
  67 #define CFG_PREFIX "transform-"
  68
  69 vlc_module_begin();
  70     set_description( _("Video transformation filter") );
  71     set_shortname( _("Transformation"));
  72     set_capability( "video filter", 0 );
  73     set_category( CAT_VIDEO );
  74     set_subcategory( SUBCAT_VIDEO_VFILTER );
  75
  76     add_string( CFG_PREFIX "type", "90", NULL,
  77                           TYPE_TEXT, TYPE_LONGTEXT, VLC_FALSE);
  78         change_safe();
  79         change_string_list( type_list, type_list_text, 0);
  80
  81     add_shortcut( "transform" );
  82     set_callbacks( Create, Destroy );
  83 vlc_module_end();
  84
  85 static const char *ppsz_filter_options[] = {
  86     "type", NULL
  87 };
  88
  89 /*****************************************************************************
  90  * vout_sys_t: Transform video output method descriptor
  91  *****************************************************************************
  92  * This structure is part of the video output thread descriptor.
  93  * It describes the Transform specific properties of an output thread.
  94  *****************************************************************************/
  95 struct vout_sys_t
  96 {
  97     int i_mode;
  98     vlc_bool_t b_rotation;
  99     vout_thread_t *p_vout;
 100
 101     void (*pf_filter)( vout_thread_t *, const picture_t *, picture_t * );
 102 };
 103
 104 /*****************************************************************************
 105  * Control: control facility for the vout (forwards to child vout)
 106  *****************************************************************************/
 107 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 108 {
 109     return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
 110 }
 111
 112 /*****************************************************************************
 113  * Create: allocates Transform video thread output method
 114  *****************************************************************************
 115  * This function allocates and initializes a Transform vout method.
 116  *****************************************************************************/
 117 static int Create( vlc_object_t *p_this )
 118 {
 119     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 120     char *psz_method;
 121
 122     /* Allocate structure */
 123     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 124     if( p_vout->p_sys == NULL )
 125     {
 126         msg_Err( p_vout, "out of memory" );
 127         return VLC_ENOMEM;
 128     }
 129
 130     p_vout->pf_init = Init;
 131     p_vout->pf_end = End;
 132     p_vout->pf_manage = NULL;
 133     p_vout->pf_render = Render;
 134     p_vout->pf_display = NULL;
 135     p_vout->pf_control = Control;
 136
 137     config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
 138                            p_vout->p_cfg );
 139
 140     /* Look what method was requested */
 141     psz_method = var_CreateGetNonEmptyString( p_vout, "transform-type" );
 142
 143     switch( p_vout->fmt_in.i_chroma )
 144     {
 145         CASE_PLANAR_YUV
 146         case VLC_FOURCC('G','R','E','Y'):
 147             p_vout->p_sys->pf_filter = FilterPlanar;
 148             break;
 149
 150         CASE_PACKED_YUV_422
 151             p_vout->p_sys->pf_filter = FilterYUYV;
 152             break;
 153
 154         default:
 155             msg_Err( p_vout, "Unsupported chroma" );
 156             free( p_vout->p_sys );
 157             return VLC_EGENERIC;
 158     }
 159
 160     if( psz_method == NULL )
 161     {
 162         msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
 163         msg_Err( p_vout, "no valid transform mode provided, using '90'" );
 164         p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
 165         p_vout->p_sys->b_rotation = 1;
 166     }
 167     else
 168     {
 169         if( !strcmp( psz_method, "hflip" ) )
 170         {
 171             p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
 172             p_vout->p_sys->b_rotation = 0;
 173         }
 174         else if( !strcmp( psz_method, "vflip" ) )
 175         {
 176             p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
 177             p_vout->p_sys->b_rotation = 0;
 178         }
 179         else if( !strcmp( psz_method, "90" ) )
 180         {
 181             p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
 182             p_vout->p_sys->b_rotation = 1;
 183         }
 184         else if( !strcmp( psz_method, "180" ) )
 185         {
 186             p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
 187             p_vout->p_sys->b_rotation = 0;
 188         }
 189         else if( !strcmp( psz_method, "270" ) )
 190         {
 191             p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
 192             p_vout->p_sys->b_rotation = 1;
 193         }
 194         else
 195         {
 196             msg_Err( p_vout, "no valid transform mode provided, using '90'" );
 197             p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
 198             p_vout->p_sys->b_rotation = 1;
 199         }
 200
 201         free( psz_method );
 202     }
 203
 204     return VLC_SUCCESS;
 205 }
 206
 207 /*****************************************************************************
 208  * Init: initialize Transform video thread output method
 209  *****************************************************************************/
 210 static int Init( vout_thread_t *p_vout )
 211 {
 212     int i_index;
 213     picture_t *p_pic;
 214     video_format_t fmt;
 215
 216     I_OUTPUTPICTURES = 0;
 217     memset( &fmt, 0, sizeof(video_format_t) );
 218
 219     /* Initialize the output structure */
 220     p_vout->output.i_chroma = p_vout->render.i_chroma;
 221     p_vout->output.i_width  = p_vout->render.i_width;
 222     p_vout->output.i_height = p_vout->render.i_height;
 223     p_vout->output.i_aspect = p_vout->render.i_aspect;
 224     p_vout->fmt_out = p_vout->fmt_in;
 225     fmt = p_vout->fmt_out;
 226
 227     /* Try to open the real video output */
 228     msg_Dbg( p_vout, "spawning the real video output" );
 229
 230     if( p_vout->p_sys->b_rotation )
 231     {
 232         fmt.i_width = p_vout->fmt_out.i_height;
 233         fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
 234         fmt.i_x_offset = p_vout->fmt_out.i_y_offset;
 235
 236         fmt.i_height = p_vout->fmt_out.i_width;
 237         fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
 238         fmt.i_y_offset = p_vout->fmt_out.i_x_offset;
 239
 240         fmt.i_aspect = VOUT_ASPECT_FACTOR *
 241             (uint64_t)VOUT_ASPECT_FACTOR / fmt.i_aspect;
 242
 243         fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
 244         fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
 245     }
 246
 247     p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
 248
 249     /* Everything failed */
 250     if( p_vout->p_sys->p_vout == NULL )
 251     {
 252         msg_Err( p_vout, "cannot open vout, aborting" );
 253         return VLC_EGENERIC;
 254     }
 255
 256     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 257
 258     ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 259
 260     ADD_PARENT_CALLBACKS( SendEventsToChild );
 261
 262     return VLC_SUCCESS;
 263 }
 264
 265 /*****************************************************************************
 266  * End: terminate Transform video thread output method
 267  *****************************************************************************/
 268 static void End( vout_thread_t *p_vout )
 269 {
 270     int i_index;
 271
 272     /* Free the fake output buffers we allocated */
 273     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 274     {
 275         i_index--;
 276         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 277     }
 278 }
 279
 280 /*****************************************************************************
 281  * Destroy: destroy Transform video thread output method
 282  *****************************************************************************
 283  * Terminate an output method created by TransformCreateOutputMethod
 284  *****************************************************************************/
 285 static void Destroy( vlc_object_t *p_this )
 286 {
 287     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 288
 289     if( p_vout->p_sys->p_vout )
 290     {
 291         DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 292         vlc_object_detach( p_vout->p_sys->p_vout );
 293         vout_Destroy( p_vout->p_sys->p_vout );
 294     }
 295
 296     DEL_PARENT_CALLBACKS( SendEventsToChild );
 297
 298     free( p_vout->p_sys );
 299 }
 300
 301 /*****************************************************************************
 302  * Render: displays previously rendered output
 303  *****************************************************************************
 304  * This function send the currently rendered image to Transform image, waits
 305  * until it is displayed and switch the two rendering buffers, preparing next
 306  * frame.
 307  *****************************************************************************/
 308 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 309 {
 310     picture_t *p_outpic;
 311
 312     /* This is a new frame. Get a structure from the video_output. */
 313     while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
 314               == NULL )
 315     {
 316         if( p_vout->b_die || p_vout->b_error )
 317         {
 318             return;
 319         }
 320         msleep( VOUT_OUTMEM_SLEEP );
 321     }
 322
 323     vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
 324     vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
 325
 326     p_vout->p_sys->pf_filter( p_vout, p_pic, p_outpic );
 327
 328     vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
 329
 330     vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
 331 }
 332
 333 /*****************************************************************************
 334  * SendEvents: forward mouse and keyboard events to the parent p_vout
 335  *****************************************************************************/
 336 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 337                        vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
 338 {
 339     vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
 340     vlc_value_t sentval = newval;
 341
 342     /* Translate the mouse coordinates */
 343     if( !strcmp( psz_var, "mouse-x" ) )
 344     {
 345         switch( p_vout->p_sys->i_mode )
 346         {
 347         case TRANSFORM_MODE_270:
 348             sentval.i_int = p_vout->p_sys->p_vout->output.i_width
 349                              - sentval.i_int;
 350         case TRANSFORM_MODE_90:
 351             var_Set( p_vout, "mouse-y", sentval );
 352             return VLC_SUCCESS;
 353
 354         case TRANSFORM_MODE_180:
 355         case TRANSFORM_MODE_HFLIP:
 356             sentval.i_int = p_vout->p_sys->p_vout->output.i_width
 357                              - sentval.i_int;
 358             break;
 359
 360         case TRANSFORM_MODE_VFLIP:
 361         default:
 362             break;
 363         }
 364     }
 365     else if( !strcmp( psz_var, "mouse-y" ) )
 366     {
 367         switch( p_vout->p_sys->i_mode )
 368         {
 369         case TRANSFORM_MODE_90:
 370             sentval.i_int = p_vout->p_sys->p_vout->output.i_height
 371                              - sentval.i_int;
 372         case TRANSFORM_MODE_270:
 373             var_Set( p_vout, "mouse-x", sentval );
 374             return VLC_SUCCESS;
 375
 376         case TRANSFORM_MODE_180:
 377         case TRANSFORM_MODE_VFLIP:
 378             sentval.i_int = p_vout->p_sys->p_vout->output.i_height
 379                              - sentval.i_int;
 380             break;
 381
 382         case TRANSFORM_MODE_HFLIP:
 383         default:
 384             break;
 385         }
 386     }
 387
 388     var_Set( p_vout, psz_var, sentval );
 389
 390     return VLC_SUCCESS;
 391 }
 392
 393 /*****************************************************************************
 394  * SendEventsToChild: forward events to the child/children vout
 395  *****************************************************************************/
 396 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 397                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 398 {
 399     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 400     var_Set( p_vout->p_sys->p_vout, psz_var, newval );
 401     return VLC_SUCCESS;
 402 }
 403
 404 static void FilterPlanar( vout_thread_t *p_vout,
 405                           const picture_t *p_pic, picture_t *p_outpic )
 406 {
 407     int i_index;
 408     switch( p_vout->p_sys->i_mode )
 409     {
 410         case TRANSFORM_MODE_90:
 411             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 412             {
 413                 int i_pitch = p_pic->p[i_index].i_pitch;
 414
 415                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 416
 417                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 418                 uint8_t *p_out_end = p_out +
 419                     p_outpic->p[i_index].i_visible_lines *
 420                     p_outpic->p[i_index].i_pitch;
 421
 422                 for( ; p_out < p_out_end ; )
 423                 {
 424                     uint8_t *p_line_end;
 425
 426                     p_out_end -= p_outpic->p[i_index].i_pitch
 427                                   - p_outpic->p[i_index].i_visible_pitch;
 428                     p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
 429                         i_pitch;
 430
 431                     for( ; p_in < p_line_end ; )
 432                     {
 433                         p_line_end -= i_pitch;
 434                         *(--p_out_end) = *p_line_end;
 435                     }
 436
 437                     p_in++;
 438                 }
 439             }
 440             break;
 441
 442         case TRANSFORM_MODE_180:
 443             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 444             {
 445                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 446                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 447                                             * p_pic->p[i_index].i_pitch;
 448
 449                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 450
 451                 for( ; p_in < p_in_end ; )
 452                 {
 453                     uint8_t *p_line_start = p_in_end
 454                                              - p_pic->p[i_index].i_pitch;
 455                     p_in_end -= p_pic->p[i_index].i_pitch
 456                                  - p_pic->p[i_index].i_visible_pitch;
 457
 458                     for( ; p_line_start < p_in_end ; )
 459                     {
 460                         *p_out++ = *(--p_in_end);
 461                     }
 462
 463                     p_out += p_outpic->p[i_index].i_pitch
 464                               - p_outpic->p[i_index].i_visible_pitch;
 465                 }
 466             }
 467             break;
 468
 469         case TRANSFORM_MODE_270:
 470             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 471             {
 472                 int i_pitch = p_pic->p[i_index].i_pitch;
 473
 474                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 475
 476                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 477                 uint8_t *p_out_end = p_out +
 478                     p_outpic->p[i_index].i_visible_lines *
 479                     p_outpic->p[i_index].i_pitch;
 480
 481                 for( ; p_out < p_out_end ; )
 482                 {
 483                     uint8_t *p_in_end;
 484
 485                     p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
 486                         i_pitch;
 487
 488                     for( ; p_in < p_in_end ; )
 489                     {
 490                         p_in_end -= i_pitch;
 491                         *p_out++ = *p_in_end;
 492                     }
 493
 494                     p_out += p_outpic->p[i_index].i_pitch
 495                               - p_outpic->p[i_index].i_visible_pitch;
 496                     p_in++;
 497                 }
 498             }
 499             break;
 500
 501         case TRANSFORM_MODE_HFLIP:
 502             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 503             {
 504                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 505                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 506                                             * p_pic->p[i_index].i_pitch;
 507
 508                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 509
 510                 for( ; p_in < p_in_end ; )
 511                 {
 512                     p_in_end -= p_pic->p[i_index].i_pitch;
 513                     p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
 514                                            p_pic->p[i_index].i_visible_pitch );
 515                     p_out += p_pic->p[i_index].i_pitch;
 516                 }
 517             }
 518             break;
 519
 520         case TRANSFORM_MODE_VFLIP:
 521             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 522             {
 523                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 524                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 525                                          * p_pic->p[i_index].i_pitch;
 526
 527                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 528
 529                 for( ; p_in < p_in_end ; )
 530                 {
 531                     uint8_t *p_line_end = p_in
 532                                         + p_pic->p[i_index].i_visible_pitch;
 533
 534                     for( ; p_in < p_line_end ; )
 535                     {
 536                         *p_out++ = *(--p_line_end);
 537                     }
 538
 539                     p_in += p_pic->p[i_index].i_pitch;
 540                 }
 541             }
 542             break;
 543
 544         default:
 545             break;
 546     }
 547 }
 548
 549 static void FilterYUYV( vout_thread_t *p_vout,
 550                         const picture_t *p_pic, picture_t *p_outpic )
 551 {
 552     int i_index;
 553     int i_y_offset, i_u_offset, i_v_offset;
 554     if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
 555                              &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 556         return;
 557
 558     switch( p_vout->p_sys->i_mode )
 559     {
 560         case TRANSFORM_MODE_90:
 561             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 562             {
 563                 int i_pitch = p_pic->p[i_index].i_pitch;
 564
 565                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 566
 567                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 568                 uint8_t *p_out_end = p_out +
 569                     p_outpic->p[i_index].i_visible_lines *
 570                     p_outpic->p[i_index].i_pitch;
 571
 572                 int i_offset  = i_u_offset;
 573                 int i_offset2 = i_v_offset;
 574                 for( ; p_out < p_out_end ; )
 575                 {
 576                     uint8_t *p_line_end;
 577
 578                     p_out_end -= p_outpic->p[i_index].i_pitch
 579                                   - p_outpic->p[i_index].i_visible_pitch;
 580                     p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
 581                         i_pitch;
 582
 583                     for( ; p_in < p_line_end ; )
 584                     {
 585                         p_line_end -= i_pitch;
 586                         p_out_end -= 4;
 587                         p_out_end[i_y_offset+2] = p_line_end[i_y_offset];
 588                         p_out_end[i_u_offset] = p_line_end[i_offset];
 589                         p_line_end -= i_pitch;
 590                         p_out_end[i_y_offset] = p_line_end[i_y_offset];
 591                         p_out_end[i_v_offset] = p_line_end[i_offset2];
 592                     }
 593
 594                     p_in += 2;
 595
 596                     {
 597                         int a = i_offset;
 598                         i_offset = i_offset2;
 599                         i_offset2 = a;
 600                     }
 601                 }
 602             }
 603             break;
 604
 605         case TRANSFORM_MODE_180:
 606             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 607             {
 608                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 609                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 610                                             * p_pic->p[i_index].i_pitch;
 611
 612                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 613
 614                 for( ; p_in < p_in_end ; )
 615                 {
 616                     uint8_t *p_line_start = p_in_end
 617                                              - p_pic->p[i_index].i_pitch;
 618                     p_in_end -= p_pic->p[i_index].i_pitch
 619                                  - p_pic->p[i_index].i_visible_pitch;
 620
 621                     for( ; p_line_start < p_in_end ; )
 622                     {
 623                         p_in_end -= 4;
 624                         p_out[i_y_offset] = p_in_end[i_y_offset+2];
 625                         p_out[i_u_offset] = p_in_end[i_u_offset];
 626                         p_out[i_y_offset+2] = p_in_end[i_y_offset];
 627                         p_out[i_v_offset] = p_in_end[i_v_offset];
 628                         p_out += 4;
 629                     }
 630
 631                     p_out += p_outpic->p[i_index].i_pitch
 632                               - p_outpic->p[i_index].i_visible_pitch;
 633                 }
 634             }
 635             break;
 636
 637         case TRANSFORM_MODE_270:
 638             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 639             {
 640                 int i_pitch = p_pic->p[i_index].i_pitch;
 641
 642                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 643
 644                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 645                 uint8_t *p_out_end = p_out +
 646                     p_outpic->p[i_index].i_visible_lines *
 647                     p_outpic->p[i_index].i_pitch;
 648
 649                 int i_offset  = i_u_offset;
 650                 int i_offset2 = i_v_offset;
 651                 for( ; p_out < p_out_end ; )
 652                 {
 653                     uint8_t *p_in_end;
 654
 655                     p_in_end = p_in
 656                              + p_pic->p[i_index].i_visible_lines * i_pitch;
 657
 658                     for( ; p_in < p_in_end ; )
 659                     {
 660                         p_in_end -= i_pitch;
 661                         p_out[i_y_offset] = p_in_end[i_y_offset];
 662                         p_out[i_u_offset] = p_in_end[i_offset];
 663                         p_in_end -= i_pitch;
 664                         p_out[i_y_offset+2] = p_in_end[i_y_offset];
 665                         p_out[i_v_offset] = p_in_end[i_offset2];
 666                         p_out += 4;
 667                     }
 668
 669                     p_out += p_outpic->p[i_index].i_pitch
 670                            - p_outpic->p[i_index].i_visible_pitch;
 671                     p_in += 2;
 672
 673                     {
 674                         int a = i_offset;
 675                         i_offset = i_offset2;
 676                         i_offset2 = a;
 677                     }
 678                 }
 679             }
 680             break;
 681
 682         case TRANSFORM_MODE_HFLIP:
 683             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 684             {
 685                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 686                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 687                                             * p_pic->p[i_index].i_pitch;
 688
 689                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 690
 691                 for( ; p_in < p_in_end ; )
 692                 {
 693                     p_in_end -= p_pic->p[i_index].i_pitch;
 694                     p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
 695                                            p_pic->p[i_index].i_visible_pitch );
 696                     p_out += p_pic->p[i_index].i_pitch;
 697                 }
 698             }
 699             break;
 700
 701         case TRANSFORM_MODE_VFLIP:
 702             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 703             {
 704                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 705                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 706                                          * p_pic->p[i_index].i_pitch;
 707
 708                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 709
 710                 for( ; p_in < p_in_end ; )
 711                 {
 712                     uint8_t *p_line_end = p_in
 713                                         + p_pic->p[i_index].i_visible_pitch;
 714
 715                     for( ; p_in < p_line_end ; )
 716                     {
 717                         p_line_end -= 4;
 718                         p_out[i_y_offset] = p_line_end[i_y_offset+2];
 719                         p_out[i_u_offset] = p_line_end[i_u_offset];
 720                         p_out[i_y_offset+2] = p_line_end[i_y_offset];
 721                         p_out[i_v_offset] = p_line_end[i_v_offset];
 722                         p_out += 4;
 723                     }
 724
 725                     p_in += p_pic->p[i_index].i_pitch;
 726                 }
 727             }
 728             break;
 729
 730         default:
 731             break;
 732     }
 733 }