1 /*****************************************************************************
2 * transform.c : transform image module for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2006 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
36 #include "filter_picture.h"
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
44 /*****************************************************************************
46 *****************************************************************************/
47 static int Create ( vlc_object_t * );
48 static void Destroy ( vlc_object_t * );
50 static int Init ( vout_thread_t * );
51 static void End ( vout_thread_t * );
52 static void Render ( vout_thread_t *, picture_t * );
54 static void FilterPlanar( vout_thread_t *, const picture_t *, picture_t * );
55 static void FilterI422( vout_thread_t *, const picture_t *, picture_t * );
56 static void FilterYUYV( vout_thread_t *, const picture_t *, picture_t * );
58 static int MouseEvent( vlc_object_t *, char const *,
59 vlc_value_t, vlc_value_t, void * );
61 /*****************************************************************************
63 *****************************************************************************/
64 #define TYPE_TEXT N_("Transform type")
65 #define TYPE_LONGTEXT N_("One of '90', '180', '270', 'hflip' and 'vflip'")
67 static const char *const type_list[] = { "90", "180", "270", "hflip", "vflip" };
68 static const char *const type_list_text[] = { N_("Rotate by 90 degrees"),
69 N_("Rotate by 180 degrees"), N_("Rotate by 270 degrees"),
70 N_("Flip horizontally"), N_("Flip vertically") };
72 #define TRANSFORM_HELP N_("Rotate or flip the video")
73 #define CFG_PREFIX "transform-"
76 set_description( N_("Video transformation filter") )
77 set_shortname( N_("Transformation"))
78 set_help(TRANSFORM_HELP)
79 set_capability( "video filter", 0 )
80 set_category( CAT_VIDEO )
81 set_subcategory( SUBCAT_VIDEO_VFILTER )
83 add_string( CFG_PREFIX "type", "90", NULL,
84 TYPE_TEXT, TYPE_LONGTEXT, false)
85 change_string_list( type_list, type_list_text, 0)
87 add_shortcut( "transform" )
88 set_callbacks( Create, Destroy )
91 static const char *const ppsz_filter_options[] = {
95 /*****************************************************************************
96 * vout_sys_t: Transform video output method descriptor
97 *****************************************************************************
98 * This structure is part of the video output thread descriptor.
99 * It describes the Transform specific properties of an output thread.
100 *****************************************************************************/
105 vout_thread_t *p_vout;
107 void (*pf_filter)( vout_thread_t *, const picture_t *, picture_t * );
110 /*****************************************************************************
111 * Control: control facility for the vout (forwards to child vout)
112 *****************************************************************************/
113 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
115 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
118 /*****************************************************************************
119 * Create: allocates Transform video thread output method
120 *****************************************************************************
121 * This function allocates and initializes a Transform vout method.
122 *****************************************************************************/
123 static int Create( vlc_object_t *p_this )
125 vout_thread_t *p_vout = (vout_thread_t *)p_this;
128 /* Allocate structure */
129 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
130 if( p_vout->p_sys == NULL )
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;
140 config_ChainParse( p_vout, CFG_PREFIX, ppsz_filter_options,
143 /* Look what method was requested */
144 psz_method = var_CreateGetNonEmptyStringCommand( p_vout, "transform-type" );
146 switch( p_vout->fmt_in.i_chroma )
148 CASE_PLANAR_YUV_SQUARE
150 p_vout->p_sys->pf_filter = FilterPlanar;
155 p_vout->p_sys->pf_filter = FilterI422;
159 p_vout->p_sys->pf_filter = FilterYUYV;
163 msg_Err( p_vout, "Unsupported chroma" );
164 free( p_vout->p_sys );
168 if( psz_method == NULL )
170 msg_Err( p_vout, "configuration variable %s empty", "transform-type" );
171 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
172 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
173 p_vout->p_sys->b_rotation = 1;
177 if( !strcmp( psz_method, "hflip" ) )
179 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
180 p_vout->p_sys->b_rotation = 0;
182 else if( !strcmp( psz_method, "vflip" ) )
184 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
185 p_vout->p_sys->b_rotation = 0;
187 else if( !strcmp( psz_method, "90" ) )
189 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
190 p_vout->p_sys->b_rotation = 1;
192 else if( !strcmp( psz_method, "180" ) )
194 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
195 p_vout->p_sys->b_rotation = 0;
197 else if( !strcmp( psz_method, "270" ) )
199 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
200 p_vout->p_sys->b_rotation = 1;
204 msg_Err( p_vout, "no valid transform mode provided, using '90'" );
205 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
206 p_vout->p_sys->b_rotation = 1;
215 /*****************************************************************************
216 * Init: initialize Transform video thread output method
217 *****************************************************************************/
218 static int Init( vout_thread_t *p_vout )
222 I_OUTPUTPICTURES = 0;
223 memset( &fmt, 0, sizeof(video_format_t) );
225 /* Initialize the output structure */
226 p_vout->output.i_chroma = p_vout->render.i_chroma;
227 p_vout->output.i_width = p_vout->render.i_width;
228 p_vout->output.i_height = p_vout->render.i_height;
229 p_vout->output.i_aspect = p_vout->render.i_aspect;
230 p_vout->fmt_out = p_vout->fmt_in;
231 fmt = p_vout->fmt_out;
233 /* Try to open the real video output */
234 msg_Dbg( p_vout, "spawning the real video output" );
236 if( p_vout->p_sys->b_rotation )
238 fmt.i_width = p_vout->fmt_out.i_height;
239 fmt.i_visible_width = p_vout->fmt_out.i_visible_height;
240 fmt.i_x_offset = p_vout->fmt_out.i_y_offset;
242 fmt.i_height = p_vout->fmt_out.i_width;
243 fmt.i_visible_height = p_vout->fmt_out.i_visible_width;
244 fmt.i_y_offset = p_vout->fmt_out.i_x_offset;
246 fmt.i_sar_num = p_vout->fmt_out.i_sar_den;
247 fmt.i_sar_den = p_vout->fmt_out.i_sar_num;
250 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
252 /* Everything failed */
253 if( p_vout->p_sys->p_vout == NULL )
255 msg_Err( p_vout, "cannot open vout, aborting" );
259 vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );
261 vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
266 /*****************************************************************************
267 * End: terminate Transform video thread output method
268 *****************************************************************************/
269 static void End( vout_thread_t *p_vout )
271 vout_sys_t *p_sys = p_vout->p_sys;
273 vout_filter_DelChild( p_vout, p_sys->p_vout, MouseEvent );
274 vout_CloseAndRelease( p_sys->p_vout );
276 vout_filter_ReleaseDirectBuffers( p_vout );
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 )
286 vout_thread_t *p_vout = (vout_thread_t *)p_this;
288 free( p_vout->p_sys );
291 /*****************************************************************************
292 * Render: displays previously rendered output
293 *****************************************************************************
294 * This function send the currently rendered image to Transform image, waits
295 * until it is displayed and switch the two rendering buffers, preparing next
297 *****************************************************************************/
298 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
302 /* This is a new frame. Get a structure from the video_output. */
303 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
306 if( !vlc_object_alive (p_vout) || p_vout->b_error )
310 msleep( VOUT_OUTMEM_SLEEP );
313 p_outpic->date = p_pic->date;
314 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
316 p_vout->p_sys->pf_filter( p_vout, p_pic, p_outpic );
318 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
320 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
324 * Forward mouse event with proper conversion.
326 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
327 vlc_value_t oldval, vlc_value_t val, void *p_data )
329 vout_thread_t *p_vout = p_data;
330 VLC_UNUSED(p_this); VLC_UNUSED(oldval);
332 /* Translate the mouse coordinates
333 * FIXME missing lock */
334 if( !strcmp( psz_var, "mouse-button-down" ) )
335 return var_SetChecked( p_vout, psz_var, VLC_VAR_INTEGER, val );
337 int x = val.coords.x, y = val.coords.y;
339 switch( p_vout->p_sys->i_mode )
341 case TRANSFORM_MODE_90:
342 x = p_vout->p_sys->p_vout->output.i_height - val.coords.y;
346 case TRANSFORM_MODE_180:
347 x = p_vout->p_sys->p_vout->output.i_width - val.coords.x;
348 y = p_vout->p_sys->p_vout->output.i_height - val.coords.y;
351 case TRANSFORM_MODE_270:
353 y = p_vout->p_sys->p_vout->output.i_width - val.coords.x;
356 case TRANSFORM_MODE_HFLIP:
357 x = p_vout->p_sys->p_vout->output.i_width - val.coords.x;
360 case TRANSFORM_MODE_VFLIP:
361 y = p_vout->p_sys->p_vout->output.i_height - val.coords.y;
367 return var_SetCoords( p_vout, psz_var, x, y );
370 static void FilterPlanar( vout_thread_t *p_vout,
371 const picture_t *p_pic, picture_t *p_outpic )
374 switch( p_vout->p_sys->i_mode )
376 case TRANSFORM_MODE_90:
377 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
379 int i_pitch = p_pic->p[i_index].i_pitch;
381 uint8_t *p_in = p_pic->p[i_index].p_pixels;
383 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
384 uint8_t *p_out_end = p_out +
385 p_outpic->p[i_index].i_visible_lines *
386 p_outpic->p[i_index].i_pitch;
388 for( ; p_out < p_out_end ; )
392 p_out_end -= p_outpic->p[i_index].i_pitch
393 - p_outpic->p[i_index].i_visible_pitch;
394 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
397 for( ; p_in < p_line_end ; )
399 p_line_end -= i_pitch;
400 *(--p_out_end) = *p_line_end;
408 case TRANSFORM_MODE_180:
409 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
411 uint8_t *p_in = p_pic->p[i_index].p_pixels;
412 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
413 * p_pic->p[i_index].i_pitch;
415 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
417 for( ; p_in < p_in_end ; )
419 uint8_t *p_line_start = p_in_end
420 - p_pic->p[i_index].i_pitch;
421 p_in_end -= p_pic->p[i_index].i_pitch
422 - p_pic->p[i_index].i_visible_pitch;
424 for( ; p_line_start < p_in_end ; )
426 *p_out++ = *(--p_in_end);
429 p_out += p_outpic->p[i_index].i_pitch
430 - p_outpic->p[i_index].i_visible_pitch;
435 case TRANSFORM_MODE_270:
436 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
438 int i_pitch = p_pic->p[i_index].i_pitch;
440 uint8_t *p_in = p_pic->p[i_index].p_pixels;
442 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
443 uint8_t *p_out_end = p_out +
444 p_outpic->p[i_index].i_visible_lines *
445 p_outpic->p[i_index].i_pitch;
447 for( ; p_out < p_out_end ; )
451 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
454 for( ; p_in < p_in_end ; )
457 *p_out++ = *p_in_end;
460 p_out += p_outpic->p[i_index].i_pitch
461 - p_outpic->p[i_index].i_visible_pitch;
467 case TRANSFORM_MODE_VFLIP:
468 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
470 uint8_t *p_in = p_pic->p[i_index].p_pixels;
471 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
472 * p_pic->p[i_index].i_pitch;
474 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
476 for( ; p_in < p_in_end ; )
478 p_in_end -= p_pic->p[i_index].i_pitch;
479 vlc_memcpy( p_out, p_in_end,
480 p_pic->p[i_index].i_visible_pitch );
481 p_out += p_outpic->p[i_index].i_pitch;
486 case TRANSFORM_MODE_HFLIP:
487 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
489 uint8_t *p_in = p_pic->p[i_index].p_pixels;
490 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
491 * p_pic->p[i_index].i_pitch;
493 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
495 for( ; p_in < p_in_end ; )
497 uint8_t *p_line_end = p_in
498 + p_pic->p[i_index].i_visible_pitch;
500 for( ; p_in < p_line_end ; )
502 *p_out++ = *(--p_line_end);
505 p_in += p_pic->p[i_index].i_pitch;
506 p_out += p_outpic->p[i_index].i_pitch
507 - p_outpic->p[i_index].i_visible_pitch;
517 static void FilterI422( vout_thread_t *p_vout,
518 const picture_t *p_pic, picture_t *p_outpic )
521 switch( p_vout->p_sys->i_mode )
523 case TRANSFORM_MODE_180:
524 case TRANSFORM_MODE_HFLIP:
525 case TRANSFORM_MODE_VFLIP:
526 /* Fall back on the default implementation */
527 FilterPlanar( p_vout, p_pic, p_outpic );
530 case TRANSFORM_MODE_90:
531 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
533 int i_pitch = p_pic->p[i_index].i_pitch;
535 uint8_t *p_in = p_pic->p[i_index].p_pixels;
537 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
538 uint8_t *p_out_end = p_out +
539 p_outpic->p[i_index].i_visible_lines *
540 p_outpic->p[i_index].i_pitch;
544 for( ; p_out < p_out_end ; )
548 p_out_end -= p_outpic->p[i_index].i_pitch
549 - p_outpic->p[i_index].i_visible_pitch;
550 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
553 for( ; p_in < p_line_end ; )
555 p_line_end -= i_pitch;
556 *(--p_out_end) = *p_line_end;
562 else /* i_index == 1 or 2 */
564 for( ; p_out < p_out_end ; )
566 uint8_t *p_line_end, *p_out_end2;
568 p_out_end -= p_outpic->p[i_index].i_pitch
569 - p_outpic->p[i_index].i_visible_pitch;
570 p_out_end2 = p_out_end - p_outpic->p[i_index].i_pitch;
571 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
574 for( ; p_in < p_line_end ; )
578 p_line_end -= i_pitch;
580 p_line_end -= i_pitch;
583 /* Trick for (x+y)/2 without overflow, based on
584 * x + y == (x ^ y) + 2 * (x & y) */
585 *(--p_out_end) = (p1 & p2) + ((p1 ^ p2) / 2);
586 *(--p_out_end2) = (p1 & p2) + ((p1 ^ p2) / 2);
589 p_out_end = p_out_end2;
596 case TRANSFORM_MODE_270:
597 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
599 int i_pitch = p_pic->p[i_index].i_pitch;
601 uint8_t *p_in = p_pic->p[i_index].p_pixels;
603 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
604 uint8_t *p_out_end = p_out +
605 p_outpic->p[i_index].i_visible_lines *
606 p_outpic->p[i_index].i_pitch;
610 for( ; p_out < p_out_end ; )
614 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
617 for( ; p_in < p_in_end ; )
620 *p_out++ = *p_in_end;
623 p_out += p_outpic->p[i_index].i_pitch
624 - p_outpic->p[i_index].i_visible_pitch;
628 else /* i_index == 1 or 2 */
630 for( ; p_out < p_out_end ; )
632 uint8_t *p_in_end, *p_out2;
634 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
636 p_out2 = p_out + p_outpic->p[i_index].i_pitch;
638 for( ; p_in < p_in_end ; )
647 /* Trick for (x+y)/2 without overflow, based on
648 * x + y == (x ^ y) + 2 * (x & y) */
649 *p_out++ = (p1 & p2) + ((p1 ^ p2) / 2);
650 *p_out2++ = (p1 & p2) + ((p1 ^ p2) / 2);
653 p_out2 += p_outpic->p[i_index].i_pitch
654 - p_outpic->p[i_index].i_visible_pitch;
667 static void FilterYUYV( vout_thread_t *p_vout,
668 const picture_t *p_pic, picture_t *p_outpic )
671 int i_y_offset, i_u_offset, i_v_offset;
672 if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
673 &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
676 switch( p_vout->p_sys->i_mode )
678 case TRANSFORM_MODE_VFLIP:
679 /* Fall back on the default implementation */
680 FilterPlanar( p_vout, p_pic, p_outpic );
683 case TRANSFORM_MODE_90:
684 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
686 int i_pitch = p_pic->p[i_index].i_pitch;
688 uint8_t *p_in = p_pic->p[i_index].p_pixels;
690 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
691 uint8_t *p_out_end = p_out +
692 p_outpic->p[i_index].i_visible_lines *
693 p_outpic->p[i_index].i_pitch;
695 int i_offset = i_u_offset;
696 int i_offset2 = i_v_offset;
697 for( ; p_out < p_out_end ; )
701 p_out_end -= p_outpic->p[i_index].i_pitch
702 - p_outpic->p[i_index].i_visible_pitch;
703 p_line_end = p_in + p_pic->p[i_index].i_visible_lines *
706 for( ; p_in < p_line_end ; )
708 p_line_end -= i_pitch;
710 p_out_end[i_y_offset+2] = p_line_end[i_y_offset];
711 p_out_end[i_u_offset] = p_line_end[i_offset];
712 p_line_end -= i_pitch;
713 p_out_end[i_y_offset] = p_line_end[i_y_offset];
714 p_out_end[i_v_offset] = p_line_end[i_offset2];
721 i_offset = i_offset2;
728 case TRANSFORM_MODE_180:
729 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
731 uint8_t *p_in = p_pic->p[i_index].p_pixels;
732 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
733 * p_pic->p[i_index].i_pitch;
735 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
737 for( ; p_in < p_in_end ; )
739 uint8_t *p_line_start = p_in_end
740 - p_pic->p[i_index].i_pitch;
741 p_in_end -= p_pic->p[i_index].i_pitch
742 - p_pic->p[i_index].i_visible_pitch;
744 for( ; p_line_start < p_in_end ; )
747 p_out[i_y_offset] = p_in_end[i_y_offset+2];
748 p_out[i_u_offset] = p_in_end[i_u_offset];
749 p_out[i_y_offset+2] = p_in_end[i_y_offset];
750 p_out[i_v_offset] = p_in_end[i_v_offset];
754 p_out += p_outpic->p[i_index].i_pitch
755 - p_outpic->p[i_index].i_visible_pitch;
760 case TRANSFORM_MODE_270:
761 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
763 int i_pitch = p_pic->p[i_index].i_pitch;
765 uint8_t *p_in = p_pic->p[i_index].p_pixels;
767 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
768 uint8_t *p_out_end = p_out +
769 p_outpic->p[i_index].i_visible_lines *
770 p_outpic->p[i_index].i_pitch;
772 int i_offset = i_u_offset;
773 int i_offset2 = i_v_offset;
774 for( ; p_out < p_out_end ; )
779 + p_pic->p[i_index].i_visible_lines * i_pitch;
781 for( ; p_in < p_in_end ; )
784 p_out[i_y_offset] = p_in_end[i_y_offset];
785 p_out[i_u_offset] = p_in_end[i_offset];
787 p_out[i_y_offset+2] = p_in_end[i_y_offset];
788 p_out[i_v_offset] = p_in_end[i_offset2];
792 p_out += p_outpic->p[i_index].i_pitch
793 - p_outpic->p[i_index].i_visible_pitch;
798 i_offset = i_offset2;
805 case TRANSFORM_MODE_HFLIP:
806 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
808 uint8_t *p_in = p_pic->p[i_index].p_pixels;
809 uint8_t *p_in_end = p_in + p_pic->p[i_index].i_visible_lines
810 * p_pic->p[i_index].i_pitch;
812 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
814 for( ; p_in < p_in_end ; )
816 uint8_t *p_line_end = p_in
817 + p_pic->p[i_index].i_visible_pitch;
819 for( ; p_in < p_line_end ; )
822 p_out[i_y_offset] = p_line_end[i_y_offset+2];
823 p_out[i_u_offset] = p_line_end[i_u_offset];
824 p_out[i_y_offset+2] = p_line_end[i_y_offset];
825 p_out[i_v_offset] = p_line_end[i_v_offset];
829 p_in += p_pic->p[i_index].i_pitch;
830 p_out += p_outpic->p[i_index].i_pitch
831 - p_outpic->p[i_index].i_visible_pitch;