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 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc_vout.h>
  34
  35 #include "filter_common.h"
  36 #include "filter_picture.h"
  37
  38 #define TRANSFORM_MODE_HFLIP   1
  39 #define TRANSFORM_MODE_VFLIP   2
  40 #define TRANSFORM_MODE_90      3
  41 #define TRANSFORM_MODE_180     4
  42 #define TRANSFORM_MODE_270     5
  43
  44 /*****************************************************************************
  45  * Local prototypes
  46  *****************************************************************************/
  47 static int  Create    ( vlc_object_t * );
  48 static void Destroy   ( vlc_object_t * );
  49
  50 static int  Init      ( vout_thread_t * );
  51 static void End       ( vout_thread_t * );
  52 static void Render    ( vout_thread_t *, picture_t * );
  53
  54 static void FilterPlanar( vout_thread_t *, const picture_t *, picture_t * );
  55 static void FilterYUYV( vout_thread_t *, const picture_t *, picture_t * );
  56
  57 static int  SendEvents( vlc_object_t *, char const *,
  58                         vlc_value_t, vlc_value_t, void * );
  59
  60 /*****************************************************************************
  61  * Module descriptor
  62  *****************************************************************************/
  63 #define TYPE_TEXT N_("Transform type")
  64 #define TYPE_LONGTEXT N_("One of '90', '180', '270', 'hflip' and 'vflip'")
  65
  66 static const char *type_list[] = { "90", "180", "270", "hflip", "vflip" };
  67 static const char *type_list_text[] = { N_("Rotate by 90 degrees"),
  68   N_("Rotate by 180 degrees"), N_("Rotate by 270 degrees"),
  69   N_("Flip horizontally"), N_("Flip vertically") };
  70
  71 #define CFG_PREFIX "transform-"
  72
  73 vlc_module_begin();
  74     set_description( _("Video transformation filter") );
  75     set_shortname( _("Transformation"));
  76     set_capability( "video filter", 0 );
  77     set_category( CAT_VIDEO );
  78     set_subcategory( SUBCAT_VIDEO_VFILTER );
  79
  80     add_string( CFG_PREFIX "type", "90", NULL,
  81                           TYPE_TEXT, TYPE_LONGTEXT, VLC_FALSE);
  82         change_string_list( type_list, type_list_text, 0);
  83
  84     add_shortcut( "transform" );
  85     set_callbacks( Create, Destroy );
  86 vlc_module_end();
  87
  88 static const char *ppsz_filter_options[] = {
  89     "type", NULL
  90 };
  91
  92 /*****************************************************************************
  93  * vout_sys_t: Transform video output method descriptor
  94  *****************************************************************************
  95  * This structure is part of the video output thread descriptor.
  96  * It describes the Transform specific properties of an output thread.
  97  *****************************************************************************/
  98 struct vout_sys_t
  99 {
 100     int i_mode;
 101     vlc_bool_t b_rotation;
 102     vout_thread_t *p_vout;
 103
 104     void (*pf_filter)( vout_thread_t *, const picture_t *, picture_t * );
 105 };
 106
 107 /*****************************************************************************
 108  * Control: control facility for the vout (forwards to child vout)
 109  *****************************************************************************/
 110 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 111 {
 112     return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
 113 }
 114
 115 /*****************************************************************************
 116  * Create: allocates Transform video thread output method
 117  *****************************************************************************
 118  * This function allocates and initializes a Transform vout method.
 119  *****************************************************************************/
 120 static int Create( vlc_object_t *p_this )
 121 {
 122     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 123     char *psz_method;
 124
 125     /* Allocate structure */
 126     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 127     if( p_vout->p_sys == NULL )
 128     {
 129         msg_Err( p_vout, "out of memory" );
 130         return VLC_ENOMEM;
 131     }
 132
 133     p_vout->pf_init = Init;
 134     p_vout->pf_end = End;
 135     p_vout->pf_manage = NULL;
 136     p_vout->pf_render = Render;
 137     p_vout->pf_display = NULL;
 138     p_vout->pf_control = Control;
 139
 140     config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
 141                            p_vout->p_cfg );
 142
 143     /* Look what method was requested */
 144     psz_method = var_CreateGetNonEmptyString( p_vout, "transform-type" );
 145
 146     switch( p_vout->fmt_in.i_chroma )
 147     {
 148         CASE_PLANAR_YUV
 149         case VLC_FOURCC('G','R','E','Y'):
 150             p_vout->p_sys->pf_filter = FilterPlanar;
 151             break;
 152
 153         CASE_PACKED_YUV_422
 154             p_vout->p_sys->pf_filter = FilterYUYV;
 155             break;
 156
 157         default:
 158             msg_Err( p_vout, "Unsupported chroma" );
 159             free( p_vout->p_sys );
 160             return VLC_EGENERIC;
 161     }
 162
 163     if( psz_method == NULL )
 164     {
 165         msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
 166         msg_Err( p_vout, "no valid transform mode provided, using '90'" );
 167         p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
 168         p_vout->p_sys->b_rotation = 1;
 169     }
 170     else
 171     {
 172         if( !strcmp( psz_method, "hflip" ) )
 173         {
 174             p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
 175             p_vout->p_sys->b_rotation = 0;
 176         }
 177         else if( !strcmp( psz_method, "vflip" ) )
 178         {
 179             p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
 180             p_vout->p_sys->b_rotation = 0;
 181         }
 182         else if( !strcmp( psz_method, "90" ) )
 183         {
 184             p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
 185             p_vout->p_sys->b_rotation = 1;
 186         }
 187         else if( !strcmp( psz_method, "180" ) )
 188         {
 189             p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
 190             p_vout->p_sys->b_rotation = 0;
 191         }
 192         else if( !strcmp( psz_method, "270" ) )
 193         {
 194             p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
 195             p_vout->p_sys->b_rotation = 1;
 196         }
 197         else
 198         {
 199             msg_Err( p_vout, "no valid transform mode provided, using '90'" );
 200             p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
 201             p_vout->p_sys->b_rotation = 1;
 202         }
 203
 204         free( psz_method );
 205     }
 206
 207     return VLC_SUCCESS;
 208 }
 209
 210 /*****************************************************************************
 211  * Init: initialize Transform video thread output method
 212  *****************************************************************************/
 213 static int Init( vout_thread_t *p_vout )
 214 {
 215     int i_index;
 216     picture_t *p_pic;
 217     video_format_t fmt;
 218
 219     I_OUTPUTPICTURES = 0;
 220     memset( &fmt, 0, sizeof(video_format_t) );
 221
 222     /* Initialize the output structure */
 223     p_vout->output.i_chroma = p_vout->render.i_chroma;
 224     p_vout->output.i_width  = p_vout->render.i_width;
 225     p_vout->output.i_height = p_vout->render.i_height;
 226     p_vout->output.i_aspect = p_vout->render.i_aspect;
 227     p_vout->fmt_out = p_vout->fmt_in;
 228     fmt = p_vout->fmt_out;
 229
 230     /* Try to open the real video output */
 231     msg_Dbg( p_vout, "spawning the real video output" );
 232
 233     if( p_vout->p_sys->b_rotation )
 234     {
 235         fmt.i_width = p_vout->fmt_out.i_height;
 236         fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
 237         fmt.i_x_offset = p_vout->fmt_out.i_y_offset;
 238
 239         fmt.i_height = p_vout->fmt_out.i_width;
 240         fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
 241         fmt.i_y_offset = p_vout->fmt_out.i_x_offset;
 242
 243         fmt.i_aspect = VOUT_ASPECT_FACTOR *
 244             (uint64_t)VOUT_ASPECT_FACTOR / fmt.i_aspect;
 245
 246         fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
 247         fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
 248     }
 249
 250     p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
 251
 252     /* Everything failed */
 253     if( p_vout->p_sys->p_vout == NULL )
 254     {
 255         msg_Err( p_vout, "cannot open vout, aborting" );
 256         return VLC_EGENERIC;
 257     }
 258
 259     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 260
 261     ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 262
 263     ADD_PARENT_CALLBACKS( SendEventsToChild );
 264
 265     return VLC_SUCCESS;
 266 }
 267
 268 /*****************************************************************************
 269  * End: terminate Transform video thread output method
 270  *****************************************************************************/
 271 static void End( vout_thread_t *p_vout )
 272 {
 273     int i_index;
 274
 275     /* Free the fake output buffers we allocated */
 276     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 277     {
 278         i_index--;
 279         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 280     }
 281 }
 282
 283 /*****************************************************************************
 284  * Destroy: destroy Transform video thread output method
 285  *****************************************************************************
 286  * Terminate an output method created by TransformCreateOutputMethod
 287  *****************************************************************************/
 288 static void Destroy( vlc_object_t *p_this )
 289 {
 290     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 291
 292     if( p_vout->p_sys->p_vout )
 293     {
 294         DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 295         vlc_object_detach( p_vout->p_sys->p_vout );
 296         vout_Destroy( p_vout->p_sys->p_vout );
 297     }
 298
 299     DEL_PARENT_CALLBACKS( SendEventsToChild );
 300
 301     free( p_vout->p_sys );
 302 }
 303
 304 /*****************************************************************************
 305  * Render: displays previously rendered output
 306  *****************************************************************************
 307  * This function send the currently rendered image to Transform image, waits
 308  * until it is displayed and switch the two rendering buffers, preparing next
 309  * frame.
 310  *****************************************************************************/
 311 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 312 {
 313     picture_t *p_outpic;
 314
 315     /* This is a new frame. Get a structure from the video_output. */
 316     while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
 317               == NULL )
 318     {
 319         if( p_vout->b_die || p_vout->b_error )
 320         {
 321             return;
 322         }
 323         msleep( VOUT_OUTMEM_SLEEP );
 324     }
 325
 326     vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
 327     vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
 328
 329     p_vout->p_sys->pf_filter( p_vout, p_pic, p_outpic );
 330
 331     vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
 332
 333     vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
 334 }
 335
 336 /*****************************************************************************
 337  * SendEvents: forward mouse and keyboard events to the parent p_vout
 338  *****************************************************************************/
 339 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 340                        vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
 341 {
 342     vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
 343     vlc_value_t sentval = newval;
 344
 345     /* Translate the mouse coordinates */
 346     if( !strcmp( psz_var, "mouse-x" ) )
 347     {
 348         switch( p_vout->p_sys->i_mode )
 349         {
 350         case TRANSFORM_MODE_270:
 351             sentval.i_int = p_vout->p_sys->p_vout->output.i_width
 352                              - sentval.i_int;
 353         case TRANSFORM_MODE_90:
 354             var_Set( p_vout, "mouse-y", sentval );
 355             return VLC_SUCCESS;
 356
 357         case TRANSFORM_MODE_180:
 358         case TRANSFORM_MODE_HFLIP:
 359             sentval.i_int = p_vout->p_sys->p_vout->output.i_width
 360                              - sentval.i_int;
 361             break;
 362
 363         case TRANSFORM_MODE_VFLIP:
 364         default:
 365             break;
 366         }
 367     }
 368     else if( !strcmp( psz_var, "mouse-y" ) )
 369     {
 370         switch( p_vout->p_sys->i_mode )
 371         {
 372         case TRANSFORM_MODE_90:
 373             sentval.i_int = p_vout->p_sys->p_vout->output.i_height
 374                              - sentval.i_int;
 375         case TRANSFORM_MODE_270:
 376             var_Set( p_vout, "mouse-x", sentval );
 377             return VLC_SUCCESS;
 378
 379         case TRANSFORM_MODE_180:
 380         case TRANSFORM_MODE_VFLIP:
 381             sentval.i_int = p_vout->p_sys->p_vout->output.i_height
 382                              - sentval.i_int;
 383             break;
 384
 385         case TRANSFORM_MODE_HFLIP:
 386         default:
 387             break;
 388         }
 389     }
 390
 391     var_Set( p_vout, psz_var, sentval );
 392
 393     return VLC_SUCCESS;
 394 }
 395
 396 /*****************************************************************************
 397  * SendEventsToChild: forward events to the child/children vout
 398  *****************************************************************************/
 399 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 400                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 401 {
 402     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 403     var_Set( p_vout->p_sys->p_vout, psz_var, newval );
 404     return VLC_SUCCESS;
 405 }
 406
 407 static void FilterPlanar( vout_thread_t *p_vout,
 408                           const picture_t *p_pic, picture_t *p_outpic )
 409 {
 410     int i_index;
 411     switch( p_vout->p_sys->i_mode )
 412     {
 413         case TRANSFORM_MODE_90:
 414             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 415             {
 416                 int i_pitch = p_pic->p[i_index].i_pitch;
 417
 418                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 419
 420                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 421                 uint8_t *p_out_end = p_out +
 422                     p_outpic->p[i_index].i_visible_lines *
 423                     p_outpic->p[i_index].i_pitch;
 424
 425                 for( ; p_out < p_out_end ; )
 426                 {
 427                     uint8_t *p_line_end;
 428
 429                     p_out_end -= p_outpic->p[i_index].i_pitch
 430                                   - p_outpic->p[i_index].i_visible_pitch;
 431                     p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
 432                         i_pitch;
 433
 434                     for( ; p_in < p_line_end ; )
 435                     {
 436                         p_line_end -= i_pitch;
 437                         *(--p_out_end) = *p_line_end;
 438                     }
 439
 440                     p_in++;
 441                 }
 442             }
 443             break;
 444
 445         case TRANSFORM_MODE_180:
 446             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 447             {
 448                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 449                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 450                                             * p_pic->p[i_index].i_pitch;
 451
 452                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 453
 454                 for( ; p_in < p_in_end ; )
 455                 {
 456                     uint8_t *p_line_start = p_in_end
 457                                              - p_pic->p[i_index].i_pitch;
 458                     p_in_end -= p_pic->p[i_index].i_pitch
 459                                  - p_pic->p[i_index].i_visible_pitch;
 460
 461                     for( ; p_line_start < p_in_end ; )
 462                     {
 463                         *p_out++ = *(--p_in_end);
 464                     }
 465
 466                     p_out += p_outpic->p[i_index].i_pitch
 467                               - p_outpic->p[i_index].i_visible_pitch;
 468                 }
 469             }
 470             break;
 471
 472         case TRANSFORM_MODE_270:
 473             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 474             {
 475                 int i_pitch = p_pic->p[i_index].i_pitch;
 476
 477                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 478
 479                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 480                 uint8_t *p_out_end = p_out +
 481                     p_outpic->p[i_index].i_visible_lines *
 482                     p_outpic->p[i_index].i_pitch;
 483
 484                 for( ; p_out < p_out_end ; )
 485                 {
 486                     uint8_t *p_in_end;
 487
 488                     p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
 489                         i_pitch;
 490
 491                     for( ; p_in < p_in_end ; )
 492                     {
 493                         p_in_end -= i_pitch;
 494                         *p_out++ = *p_in_end;
 495                     }
 496
 497                     p_out += p_outpic->p[i_index].i_pitch
 498                               - p_outpic->p[i_index].i_visible_pitch;
 499                     p_in++;
 500                 }
 501             }
 502             break;
 503
 504         case TRANSFORM_MODE_HFLIP:
 505             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 506             {
 507                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 508                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 509                                             * p_pic->p[i_index].i_pitch;
 510
 511                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 512
 513                 for( ; p_in < p_in_end ; )
 514                 {
 515                     p_in_end -= p_pic->p[i_index].i_pitch;
 516                     p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
 517                                            p_pic->p[i_index].i_visible_pitch );
 518                     p_out += p_pic->p[i_index].i_pitch;
 519                 }
 520             }
 521             break;
 522
 523         case TRANSFORM_MODE_VFLIP:
 524             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 525             {
 526                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 527                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 528                                          * p_pic->p[i_index].i_pitch;
 529
 530                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 531
 532                 for( ; p_in < p_in_end ; )
 533                 {
 534                     uint8_t *p_line_end = p_in
 535                                         + p_pic->p[i_index].i_visible_pitch;
 536
 537                     for( ; p_in < p_line_end ; )
 538                     {
 539                         *p_out++ = *(--p_line_end);
 540                     }
 541
 542                     p_in += p_pic->p[i_index].i_pitch;
 543                 }
 544             }
 545             break;
 546
 547         default:
 548             break;
 549     }
 550 }
 551
 552 static void FilterYUYV( vout_thread_t *p_vout,
 553                         const picture_t *p_pic, picture_t *p_outpic )
 554 {
 555     int i_index;
 556     int i_y_offset, i_u_offset, i_v_offset;
 557     if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
 558                              &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 559         return;
 560
 561     switch( p_vout->p_sys->i_mode )
 562     {
 563         case TRANSFORM_MODE_90:
 564             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 565             {
 566                 int i_pitch = p_pic->p[i_index].i_pitch;
 567
 568                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 569
 570                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 571                 uint8_t *p_out_end = p_out +
 572                     p_outpic->p[i_index].i_visible_lines *
 573                     p_outpic->p[i_index].i_pitch;
 574
 575                 int i_offset  = i_u_offset;
 576                 int i_offset2 = i_v_offset;
 577                 for( ; p_out < p_out_end ; )
 578                 {
 579                     uint8_t *p_line_end;
 580
 581                     p_out_end -= p_outpic->p[i_index].i_pitch
 582                                   - p_outpic->p[i_index].i_visible_pitch;
 583                     p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
 584                         i_pitch;
 585
 586                     for( ; p_in < p_line_end ; )
 587                     {
 588                         p_line_end -= i_pitch;
 589                         p_out_end -= 4;
 590                         p_out_end[i_y_offset+2] = p_line_end[i_y_offset];
 591                         p_out_end[i_u_offset] = p_line_end[i_offset];
 592                         p_line_end -= i_pitch;
 593                         p_out_end[i_y_offset] = p_line_end[i_y_offset];
 594                         p_out_end[i_v_offset] = p_line_end[i_offset2];
 595                     }
 596
 597                     p_in += 2;
 598
 599                     {
 600                         int a = i_offset;
 601                         i_offset = i_offset2;
 602                         i_offset2 = a;
 603                     }
 604                 }
 605             }
 606             break;
 607
 608         case TRANSFORM_MODE_180:
 609             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 610             {
 611                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 612                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 613                                             * p_pic->p[i_index].i_pitch;
 614
 615                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 616
 617                 for( ; p_in < p_in_end ; )
 618                 {
 619                     uint8_t *p_line_start = p_in_end
 620                                              - p_pic->p[i_index].i_pitch;
 621                     p_in_end -= p_pic->p[i_index].i_pitch
 622                                  - p_pic->p[i_index].i_visible_pitch;
 623
 624                     for( ; p_line_start < p_in_end ; )
 625                     {
 626                         p_in_end -= 4;
 627                         p_out[i_y_offset] = p_in_end[i_y_offset+2];
 628                         p_out[i_u_offset] = p_in_end[i_u_offset];
 629                         p_out[i_y_offset+2] = p_in_end[i_y_offset];
 630                         p_out[i_v_offset] = p_in_end[i_v_offset];
 631                         p_out += 4;
 632                     }
 633
 634                     p_out += p_outpic->p[i_index].i_pitch
 635                               - p_outpic->p[i_index].i_visible_pitch;
 636                 }
 637             }
 638             break;
 639
 640         case TRANSFORM_MODE_270:
 641             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 642             {
 643                 int i_pitch = p_pic->p[i_index].i_pitch;
 644
 645                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 646
 647                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 648                 uint8_t *p_out_end = p_out +
 649                     p_outpic->p[i_index].i_visible_lines *
 650                     p_outpic->p[i_index].i_pitch;
 651
 652                 int i_offset  = i_u_offset;
 653                 int i_offset2 = i_v_offset;
 654                 for( ; p_out < p_out_end ; )
 655                 {
 656                     uint8_t *p_in_end;
 657
 658                     p_in_end = p_in
 659                              + p_pic->p[i_index].i_visible_lines * i_pitch;
 660
 661                     for( ; p_in < p_in_end ; )
 662                     {
 663                         p_in_end -= i_pitch;
 664                         p_out[i_y_offset] = p_in_end[i_y_offset];
 665                         p_out[i_u_offset] = p_in_end[i_offset];
 666                         p_in_end -= i_pitch;
 667                         p_out[i_y_offset+2] = p_in_end[i_y_offset];
 668                         p_out[i_v_offset] = p_in_end[i_offset2];
 669                         p_out += 4;
 670                     }
 671
 672                     p_out += p_outpic->p[i_index].i_pitch
 673                            - p_outpic->p[i_index].i_visible_pitch;
 674                     p_in += 2;
 675
 676                     {
 677                         int a = i_offset;
 678                         i_offset = i_offset2;
 679                         i_offset2 = a;
 680                     }
 681                 }
 682             }
 683             break;
 684
 685         case TRANSFORM_MODE_HFLIP:
 686             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 687             {
 688                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 689                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 690                                             * p_pic->p[i_index].i_pitch;
 691
 692                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 693
 694                 for( ; p_in < p_in_end ; )
 695                 {
 696                     p_in_end -= p_pic->p[i_index].i_pitch;
 697                     p_vout->p_libvlc->pf_memcpy( p_out, p_in_end,
 698                                            p_pic->p[i_index].i_visible_pitch );
 699                     p_out += p_pic->p[i_index].i_pitch;
 700                 }
 701             }
 702             break;
 703
 704         case TRANSFORM_MODE_VFLIP:
 705             for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
 706             {
 707                 uint8_t *p_in = p_pic->p[i_index].p_pixels;
 708                 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
 709                                          * p_pic->p[i_index].i_pitch;
 710
 711                 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
 712
 713                 for( ; p_in < p_in_end ; )
 714                 {
 715                     uint8_t *p_line_end = p_in
 716                                         + p_pic->p[i_index].i_visible_pitch;
 717
 718                     for( ; p_in < p_line_end ; )
 719                     {
 720                         p_line_end -= 4;
 721                         p_out[i_y_offset] = p_line_end[i_y_offset+2];
 722                         p_out[i_u_offset] = p_line_end[i_u_offset];
 723                         p_out[i_y_offset+2] = p_line_end[i_y_offset];
 724                         p_out[i_v_offset] = p_line_end[i_v_offset];
 725                         p_out += 4;
 726                     }
 727
 728                     p_in += p_pic->p[i_index].i_pitch;
 729                 }
 730             }
 731             break;
 732
 733         default:
 734             break;
 735     }
 736 }