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