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Clarify live555 version error
[vlc/asuraparaju-public.git] / modules / video_filter / transform.c
blobc5dff9d3aab5c28c377d3c5b327eb7c9bc6eb1ec
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_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_vout.h>
35
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 FilterI422( vout_thread_t *, const picture_t *, picture_t * );
56 static void FilterYUYV( vout_thread_t *, const picture_t *, picture_t * );
57
58 static int MouseEvent( vlc_object_t *, char const *,
59 vlc_value_t, vlc_value_t, void * );
60
61 /*****************************************************************************
62 * Module descriptor
63 *****************************************************************************/
64 #define TYPE_TEXT N_("Transform type")
65 #define TYPE_LONGTEXT N_("One of '90', '180', '270', 'hflip' and 'vflip'")
66
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") };
71
72 #define TRANSFORM_HELP N_("Rotate or flip the video")
73 #define CFG_PREFIX "transform-"
74
75 vlc_module_begin ()
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 )
82
83 add_string( CFG_PREFIX "type", "90", NULL,
84 TYPE_TEXT, TYPE_LONGTEXT, false)
85 change_string_list( type_list, type_list_text, 0)
86
87 add_shortcut( "transform" )
88 set_callbacks( Create, Destroy )
89 vlc_module_end ()
90
91 static const char *const ppsz_filter_options[] = {
92 "type", NULL
93 };
94
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 *****************************************************************************/
101 struct vout_sys_t
102 {
103 int i_mode;
104 bool b_rotation;
105 vout_thread_t *p_vout;
106
107 void (*pf_filter)( vout_thread_t *, const picture_t *, picture_t * );
108 };
109
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 )
114 {
115 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
116 }
117
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 )
124 {
125 vout_thread_t *p_vout = (vout_thread_t *)p_this;
126 char *psz_method;
127
128 /* Allocate structure */
129 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
130 if( p_vout->p_sys == NULL )
131 return VLC_ENOMEM;
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_CreateGetNonEmptyStringCommand( p_vout, "transform-type" );
145
146 switch( p_vout->fmt_in.i_chroma )
147 {
148 CASE_PLANAR_YUV_SQUARE
149 case VLC_CODEC_GREY:
150 p_vout->p_sys->pf_filter = FilterPlanar;
151 break;
152
153 case VLC_CODEC_I422:
154 case VLC_CODEC_J422:
155 p_vout->p_sys->pf_filter = FilterI422;
156 break;
157
158 CASE_PACKED_YUV_422
159 p_vout->p_sys->pf_filter = FilterYUYV;
160 break;
161
162 default:
163 msg_Err( p_vout, "Unsupported chroma" );
164 free( p_vout->p_sys );
165 return VLC_EGENERIC;
166 }
167
168 if( psz_method == NULL )
169 {
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;
174 }
175 else
176 {
177 if( !strcmp( psz_method, "hflip" ) )
178 {
179 p_vout->p_sys->i_mode = TRANSFORM_MODE_HFLIP;
180 p_vout->p_sys->b_rotation = 0;
181 }
182 else if( !strcmp( psz_method, "vflip" ) )
183 {
184 p_vout->p_sys->i_mode = TRANSFORM_MODE_VFLIP;
185 p_vout->p_sys->b_rotation = 0;
186 }
187 else if( !strcmp( psz_method, "90" ) )
188 {
189 p_vout->p_sys->i_mode = TRANSFORM_MODE_90;
190 p_vout->p_sys->b_rotation = 1;
191 }
192 else if( !strcmp( psz_method, "180" ) )
193 {
194 p_vout->p_sys->i_mode = TRANSFORM_MODE_180;
195 p_vout->p_sys->b_rotation = 0;
196 }
197 else if( !strcmp( psz_method, "270" ) )
198 {
199 p_vout->p_sys->i_mode = TRANSFORM_MODE_270;
200 p_vout->p_sys->b_rotation = 1;
201 }
202 else
203 {
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;
207 }
208
209 free( psz_method );
210 }
211
212 return VLC_SUCCESS;
213 }
214
215 /*****************************************************************************
216 * Init: initialize Transform video thread output method
217 *****************************************************************************/
218 static int Init( vout_thread_t *p_vout )
219 {
220 video_format_t fmt;
221
222 I_OUTPUTPICTURES = 0;
223 memset( &fmt, 0, sizeof(video_format_t) );
224
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;
232
233 /* Try to open the real video output */
234 msg_Dbg( p_vout, "spawning the real video output" );
235
236 if( p_vout->p_sys->b_rotation )
237 {
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;
241
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;
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 vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );
260
261 vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
262
263 return VLC_SUCCESS;
264 }
265
266 /*****************************************************************************
267 * End: terminate Transform video thread output method
268 *****************************************************************************/
269 static void End( vout_thread_t *p_vout )
270 {
271 vout_sys_t *p_sys = p_vout->p_sys;
272
273 vout_filter_DelChild( p_vout, p_sys->p_vout, MouseEvent );
274 vout_CloseAndRelease( p_sys->p_vout );
275
276 vout_filter_ReleaseDirectBuffers( p_vout );
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 free( p_vout->p_sys );
289 }
290
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
296 * frame.
297 *****************************************************************************/
298 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
299 {
300 picture_t *p_outpic;
301
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 ) )
304 == NULL )
305 {
306 if( !vlc_object_alive (p_vout) || p_vout->b_error )
307 {
308 return;
309 }
310 msleep( VOUT_OUTMEM_SLEEP );
311 }
312
313 p_outpic->date = p_pic->date;
314 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
315
316 p_vout->p_sys->pf_filter( p_vout, p_pic, p_outpic );
317
318 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
319
320 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
321 }
322
323 /**
324 * Forward mouse event with proper conversion.
325 */
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 )
328 {
329 vout_thread_t *p_vout = p_data;
330 VLC_UNUSED(p_this); VLC_UNUSED(oldval);
331
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 );
336
337 int x = val.coords.x, y = val.coords.y;
338
339 switch( p_vout->p_sys->i_mode )
340 {
341 case TRANSFORM_MODE_90:
342 x = p_vout->p_sys->p_vout->output.i_height - val.coords.y;
343 y = val.coords.x;
344 break;
345
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;
349 break;
350
351 case TRANSFORM_MODE_270:
352 x = val.coords.y;
353 y = p_vout->p_sys->p_vout->output.i_width - val.coords.x;
354 break;
355
356 case TRANSFORM_MODE_HFLIP:
357 x = p_vout->p_sys->p_vout->output.i_width - val.coords.x;
358 break;
359
360 case TRANSFORM_MODE_VFLIP:
361 y = p_vout->p_sys->p_vout->output.i_height - val.coords.y;
362 break;
363
364 default:
365 break;
366 }
367 return var_SetCoords( p_vout, psz_var, x, y );
368 }
369
370 static void FilterPlanar( vout_thread_t *p_vout,
371 const picture_t *p_pic, picture_t *p_outpic )
372 {
373 int i_index;
374 switch( p_vout->p_sys->i_mode )
375 {
376 case TRANSFORM_MODE_90:
377 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
378 {
379 int i_pitch = p_pic->p[i_index].i_pitch;
380
381 uint8_t *p_in = p_pic->p[i_index].p_pixels;
382
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;
387
388 for( ; p_out < p_out_end ; )
389 {
390 uint8_t *p_line_end;
391
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 *
395 i_pitch;
396
397 for( ; p_in < p_line_end ; )
398 {
399 p_line_end -= i_pitch;
400 *(--p_out_end) = *p_line_end;
401 }
402
403 p_in++;
404 }
405 }
406 break;
407
408 case TRANSFORM_MODE_180:
409 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
410 {
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;
414
415 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
416
417 for( ; p_in < p_in_end ; )
418 {
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;
423
424 for( ; p_line_start < p_in_end ; )
425 {
426 *p_out++ = *(--p_in_end);
427 }
428
429 p_out += p_outpic->p[i_index].i_pitch
430 - p_outpic->p[i_index].i_visible_pitch;
431 }
432 }
433 break;
434
435 case TRANSFORM_MODE_270:
436 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
437 {
438 int i_pitch = p_pic->p[i_index].i_pitch;
439
440 uint8_t *p_in = p_pic->p[i_index].p_pixels;
441
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;
446
447 for( ; p_out < p_out_end ; )
448 {
449 uint8_t *p_in_end;
450
451 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
452 i_pitch;
453
454 for( ; p_in < p_in_end ; )
455 {
456 p_in_end -= i_pitch;
457 *p_out++ = *p_in_end;
458 }
459
460 p_out += p_outpic->p[i_index].i_pitch
461 - p_outpic->p[i_index].i_visible_pitch;
462 p_in++;
463 }
464 }
465 break;
466
467 case TRANSFORM_MODE_VFLIP:
468 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
469 {
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;
473
474 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
475
476 for( ; p_in < p_in_end ; )
477 {
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;
482 }
483 }
484 break;
485
486 case TRANSFORM_MODE_HFLIP:
487 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
488 {
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;
492
493 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
494
495 for( ; p_in < p_in_end ; )
496 {
497 uint8_t *p_line_end = p_in
498 + p_pic->p[i_index].i_visible_pitch;
499
500 for( ; p_in < p_line_end ; )
501 {
502 *p_out++ = *(--p_line_end);
503 }
504
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;
508 }
509 }
510 break;
511
512 default:
513 break;
514 }
515 }
516
517 static void FilterI422( vout_thread_t *p_vout,
518 const picture_t *p_pic, picture_t *p_outpic )
519 {
520 int i_index;
521 switch( p_vout->p_sys->i_mode )
522 {
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 );
528 return;
529
530 case TRANSFORM_MODE_90:
531 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
532 {
533 int i_pitch = p_pic->p[i_index].i_pitch;
534
535 uint8_t *p_in = p_pic->p[i_index].p_pixels;
536
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;
541
542 if( i_index == 0 )
543 {
544 for( ; p_out < p_out_end ; )
545 {
546 uint8_t *p_line_end;
547
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 *
551 i_pitch;
552
553 for( ; p_in < p_line_end ; )
554 {
555 p_line_end -= i_pitch;
556 *(--p_out_end) = *p_line_end;
557 }
558
559 p_in++;
560 }
561 }
562 else /* i_index == 1 or 2 */
563 {
564 for( ; p_out < p_out_end ; )
565 {
566 uint8_t *p_line_end, *p_out_end2;
567
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 *
572 i_pitch;
573
574 for( ; p_in < p_line_end ; )
575 {
576 uint8_t p1, p2;
577
578 p_line_end -= i_pitch;
579 p1 = *p_line_end;
580 p_line_end -= i_pitch;
581 p2 = *p_line_end;
582
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);
587 }
588
589 p_out_end = p_out_end2;
590 p_in++;
591 }
592 }
593 }
594 break;
595
596 case TRANSFORM_MODE_270:
597 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
598 {
599 int i_pitch = p_pic->p[i_index].i_pitch;
600
601 uint8_t *p_in = p_pic->p[i_index].p_pixels;
602
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;
607
608 if( i_index == 0 )
609 {
610 for( ; p_out < p_out_end ; )
611 {
612 uint8_t *p_in_end;
613
614 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
615 i_pitch;
616
617 for( ; p_in < p_in_end ; )
618 {
619 p_in_end -= i_pitch;
620 *p_out++ = *p_in_end;
621 }
622
623 p_out += p_outpic->p[i_index].i_pitch
624 - p_outpic->p[i_index].i_visible_pitch;
625 p_in++;
626 }
627 }
628 else /* i_index == 1 or 2 */
629 {
630 for( ; p_out < p_out_end ; )
631 {
632 uint8_t *p_in_end, *p_out2;
633
634 p_in_end = p_in + p_pic->p[i_index].i_visible_lines *
635 i_pitch;
636 p_out2 = p_out + p_outpic->p[i_index].i_pitch;
637
638 for( ; p_in < p_in_end ; )
639 {
640 uint8_t p1, p2;
641
642 p_in_end -= i_pitch;
643 p1 = *p_in_end;
644 p_in_end -= i_pitch;
645 p2 = *p_in_end;
646
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);
651 }
652
653 p_out2 += p_outpic->p[i_index].i_pitch
654 - p_outpic->p[i_index].i_visible_pitch;
655 p_out = p_out2;
656 p_in++;
657 }
658 }
659 }
660 break;
661
662 default:
663 break;
664 }
665 }
666
667 static void FilterYUYV( vout_thread_t *p_vout,
668 const picture_t *p_pic, picture_t *p_outpic )
669 {
670 int i_index;
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 )
674 return;
675
676 switch( p_vout->p_sys->i_mode )
677 {
678 case TRANSFORM_MODE_VFLIP:
679 /* Fall back on the default implementation */
680 FilterPlanar( p_vout, p_pic, p_outpic );
681 return;
682
683 case TRANSFORM_MODE_90:
684 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
685 {
686 int i_pitch = p_pic->p[i_index].i_pitch;
687
688 uint8_t *p_in = p_pic->p[i_index].p_pixels;
689
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;
694
695 int i_offset = i_u_offset;
696 int i_offset2 = i_v_offset;
697 for( ; p_out < p_out_end ; )
698 {
699 uint8_t *p_line_end;
700
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 *
704 i_pitch;
705
706 for( ; p_in < p_line_end ; )
707 {
708 p_line_end -= i_pitch;
709 p_out_end -= 4;
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];
715 }
716
717 p_in += 2;
718
719 {
720 int a = i_offset;
721 i_offset = i_offset2;
722 i_offset2 = a;
723 }
724 }
725 }
726 break;
727
728 case TRANSFORM_MODE_180:
729 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
730 {
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;
734
735 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
736
737 for( ; p_in < p_in_end ; )
738 {
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;
743
744 for( ; p_line_start < p_in_end ; )
745 {
746 p_in_end -= 4;
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];
751 p_out += 4;
752 }
753
754 p_out += p_outpic->p[i_index].i_pitch
755 - p_outpic->p[i_index].i_visible_pitch;
756 }
757 }
758 break;
759
760 case TRANSFORM_MODE_270:
761 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
762 {
763 int i_pitch = p_pic->p[i_index].i_pitch;
764
765 uint8_t *p_in = p_pic->p[i_index].p_pixels;
766
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;
771
772 int i_offset = i_u_offset;
773 int i_offset2 = i_v_offset;
774 for( ; p_out < p_out_end ; )
775 {
776 uint8_t *p_in_end;
777
778 p_in_end = p_in
779 + p_pic->p[i_index].i_visible_lines * i_pitch;
780
781 for( ; p_in < p_in_end ; )
782 {
783 p_in_end -= i_pitch;
784 p_out[i_y_offset] = p_in_end[i_y_offset];
785 p_out[i_u_offset] = p_in_end[i_offset];
786 p_in_end -= i_pitch;
787 p_out[i_y_offset+2] = p_in_end[i_y_offset];
788 p_out[i_v_offset] = p_in_end[i_offset2];
789 p_out += 4;
790 }
791
792 p_out += p_outpic->p[i_index].i_pitch
793 - p_outpic->p[i_index].i_visible_pitch;
794 p_in += 2;
795
796 {
797 int a = i_offset;
798 i_offset = i_offset2;
799 i_offset2 = a;
800 }
801 }
802 }
803 break;
804
805 case TRANSFORM_MODE_HFLIP:
806 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
807 {
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;
811
812 uint8_t *p_out = p_outpic->p[i_index].p_pixels;
813
814 for( ; p_in < p_in_end ; )
815 {
816 uint8_t *p_line_end = p_in
817 + p_pic->p[i_index].i_visible_pitch;
818
819 for( ; p_in < p_line_end ; )
820 {
821 p_line_end -= 4;
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];
826 p_out += 4;
827 }
828
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;
832 }
833 }
834 break;
835
836 default:
837 break;
838 }
839 }