1 /*****************************************************************************
2 * crop.c : Crop video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2002, 2003 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
8 * mod by Cedric Cocquebert <Cedric.Cocquebert@supelec.fr>
9 * based of DScaler idea (M. Samblanet)
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
37 #include <vlc_interface.h>
39 #include "filter_common.h"
41 #define BEST_AUTOCROP 1
43 #define RATIO_MAX 15000 // 10*4/3 for a 360
46 /*****************************************************************************
48 *****************************************************************************/
49 static int Create ( vlc_object_t * );
50 static void Destroy ( vlc_object_t * );
52 static int Init ( vout_thread_t * );
53 static void End ( vout_thread_t * );
54 static int Manage ( vout_thread_t * );
55 static void Render ( vout_thread_t *, picture_t * );
57 static void UpdateStats ( vout_thread_t *, picture_t * );
59 static int SendEvents( vlc_object_t *, char const *,
60 vlc_value_t, vlc_value_t, void * );
63 /*****************************************************************************
65 *****************************************************************************/
66 static int FilterCallback ( vlc_object_t *, char const *,
67 vlc_value_t, vlc_value_t, void * );
70 /*****************************************************************************
72 *****************************************************************************/
73 #define GEOMETRY_TEXT N_("Crop geometry (pixels)")
74 #define GEOMETRY_LONGTEXT N_("Set the geometry of the zone to crop. This is set as <width> x <height> + <left offset> + <top offset>.")
76 #define AUTOCROP_TEXT N_("Automatic cropping")
77 #define AUTOCROP_LONGTEXT N_("Automatically detect black borders and crop them.")
80 #define RATIOMAX_TEXT N_("Ratio max (x 1000)")
81 #define RATIOMAX_LONGTEXT N_("Maximum image ratio. The crop plugin will never automatically crop to a higher ratio (ie, to a more \"flat\" image). The value is x1000: 1333 means 4/3.")
83 #define RATIO_TEXT N_("Manual ratio")
84 #define RATIO_LONGTEXT N_("Force a ratio (0 for automatic). Value is x1000: 1333 means 4/3.")
86 #define TIME_TEXT N_("Number of images for change")
87 #define TIME_LONGTEXT N_("The number of consecutive images with the same detected ratio (different from the previously detected ratio) to consider that ratio chnged and trigger recrop.")
89 #define DIFF_TEXT N_("Number of lines for change")
90 #define DIFF_LONGTEXT N_("The minimum difference in the number of detected black lines to consider that ratio changed and trigger recrop.")
92 #define NBP_TEXT N_("Number of non black pixels ")
93 #define NBP_LONGTEXT N_("The maximum of non-black pixels in a line to consider"\
94 " that the line is black.")
96 #define SKIP_TEXT N_("Skip percentage (%)")
97 #define SKIP_LONGTEXT N_("Percentage of the line to consider while checking for black lines. This allows to skip logos in black borders and crop them anyway.")
99 #define LUM_TEXT N_("Luminance threshold ")
100 #define LUM_LONGTEXT N_("Maximum luminance to consider a pixel as black (0-255).")
104 set_description( N_("Crop video filter") );
105 set_shortname( N_("Crop" ));
106 set_category( CAT_VIDEO );
107 set_subcategory( SUBCAT_VIDEO_VFILTER );
108 set_capability( "video filter", 0 );
110 add_string( "crop-geometry", NULL, NULL, GEOMETRY_TEXT,
111 GEOMETRY_LONGTEXT, false );
112 add_bool( "autocrop", 0, NULL, AUTOCROP_TEXT,
113 AUTOCROP_LONGTEXT, false );
116 add_integer_with_range( "autocrop-ratio-max", 2405, 0, RATIO_MAX, NULL,
117 RATIOMAX_TEXT, RATIOMAX_LONGTEXT, true );
119 add_integer_with_range( "crop-ratio", 0, 0, RATIO_MAX, NULL, RATIO_TEXT,
120 RATIO_LONGTEXT, false );
121 add_integer( "autocrop-time", 25, NULL, TIME_TEXT,
122 TIME_LONGTEXT, true );
123 add_integer( "autocrop-diff", 16, NULL, DIFF_TEXT,
124 DIFF_LONGTEXT, true );
126 add_integer( "autocrop-non-black-pixels", 3, NULL,
127 NBP_TEXT, NBP_LONGTEXT, true );
129 add_integer_with_range( "autocrop-skip-percent", 17, 0, 100, NULL,
130 SKIP_TEXT, SKIP_LONGTEXT, true );
132 add_integer_with_range( "autocrop-luminance-threshold", 40, 0, 128, NULL,
133 LUM_TEXT, LUM_LONGTEXT, true );
134 #endif //BEST_AUTOCROP
136 add_shortcut( "crop" );
137 set_callbacks( Create, Destroy );
140 /*****************************************************************************
141 * vout_sys_t: Crop video output method descriptor
142 *****************************************************************************
143 * This structure is part of the video output thread descriptor.
144 * It describes the Crop specific properties of an output thread.
145 *****************************************************************************/
148 vout_thread_t *p_vout;
150 unsigned int i_x, i_y;
151 unsigned int i_width, i_height, i_aspect;
155 /* Autocrop specific variables */
156 unsigned int i_lastchange;
159 unsigned int i_ratio_max;
160 unsigned int i_threshold, i_skipPercent, i_nonBlackPixel, i_diff, i_time;
161 unsigned int i_ratio;
166 /*****************************************************************************
167 * Control: control facility for the vout (forwards to child vout)
168 *****************************************************************************/
169 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
171 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
174 /*****************************************************************************
175 * Create: allocates Crop video thread output method
176 *****************************************************************************
177 * This function allocates and initializes a Crop vout method.
178 *****************************************************************************/
179 static int Create( vlc_object_t *p_this )
181 vout_thread_t *p_vout = (vout_thread_t *)p_this;
183 /* Allocate structure */
184 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
185 if( p_vout->p_sys == NULL )
188 p_vout->pf_init = Init;
189 p_vout->pf_end = End;
190 p_vout->pf_manage = Manage;
191 p_vout->pf_render = Render;
192 p_vout->pf_display = NULL;
193 p_vout->pf_control = Control;
198 /*****************************************************************************
199 * Init: initialize Crop video thread output method
200 *****************************************************************************/
201 static int Init( vout_thread_t *p_vout )
208 I_OUTPUTPICTURES = 0;
209 memset( &fmt, 0, sizeof(video_format_t) );
211 p_vout->p_sys->i_lastchange = 0;
212 p_vout->p_sys->b_changed = false;
214 /* Initialize the output structure */
215 p_vout->output.i_chroma = p_vout->render.i_chroma;
216 p_vout->output.i_width = p_vout->render.i_width;
217 p_vout->output.i_height = p_vout->render.i_height;
218 p_vout->output.i_aspect = p_vout->render.i_aspect;
219 p_vout->fmt_out = p_vout->fmt_in;
221 /* Shall we use autocrop ? */
222 p_vout->p_sys->b_autocrop = config_GetInt( p_vout, "autocrop" );
224 p_vout->p_sys->i_ratio_max = config_GetInt( p_vout, "autocrop-ratio-max" );
225 p_vout->p_sys->i_threshold =
226 config_GetInt( p_vout, "autocrop-luminance-threshold" );
227 p_vout->p_sys->i_skipPercent =
228 config_GetInt( p_vout, "autocrop-skip-percent" );
229 p_vout->p_sys->i_nonBlackPixel =
230 config_GetInt( p_vout, "autocrop-non-black-pixels" );
231 p_vout->p_sys->i_diff = config_GetInt( p_vout, "autocrop-diff" );
232 p_vout->p_sys->i_time = config_GetInt( p_vout, "autocrop-time" );
234 var_Get( p_vout, "ratio-crop", &val );
235 val.psz_string = "0";
236 var_SetString( p_vout, "ratio-crop", val.psz_string);
238 if (p_vout->p_sys->b_autocrop)
239 p_vout->p_sys->i_ratio = 0;
242 p_vout->p_sys->i_ratio = config_GetInt( p_vout, "crop-ratio" );
243 // ratio < width / height => ratio = 0 (unchange ratio)
244 if (p_vout->p_sys->i_ratio < (p_vout->output.i_width * 1000) / p_vout->output.i_height)
245 p_vout->p_sys->i_ratio = 0;
250 /* Get geometry value from the user */
251 psz_var = config_GetPsz( p_vout, "crop-geometry" );
254 char *psz_parser, *psz_tmp;
256 psz_parser = psz_tmp = psz_var;
257 while( *psz_tmp && *psz_tmp != 'x' ) psz_tmp++;
262 p_vout->p_sys->i_width = atoi( psz_parser );
264 psz_parser = ++psz_tmp;
265 while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;
270 p_vout->p_sys->i_height = atoi( psz_parser );
272 psz_parser = ++psz_tmp;
273 while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;
278 p_vout->p_sys->i_x = atoi( psz_parser );
279 p_vout->p_sys->i_y = atoi( ++psz_tmp );
283 p_vout->p_sys->i_x = atoi( psz_parser );
285 ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
290 p_vout->p_sys->i_height = atoi( psz_parser );
292 ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
294 ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
299 p_vout->p_sys->i_width = atoi( psz_parser );
300 p_vout->p_sys->i_height = p_vout->output.i_height;
302 ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
304 ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
307 /* Check for validity */
308 if( p_vout->p_sys->i_x + p_vout->p_sys->i_width
309 > p_vout->output.i_width )
311 p_vout->p_sys->i_x = 0;
312 if( p_vout->p_sys->i_width > p_vout->output.i_width )
314 p_vout->p_sys->i_width = p_vout->output.i_width;
318 if( p_vout->p_sys->i_y + p_vout->p_sys->i_height
319 > p_vout->output.i_height )
321 p_vout->p_sys->i_y = 0;
322 if( p_vout->p_sys->i_height > p_vout->output.i_height )
324 p_vout->p_sys->i_height = p_vout->output.i_height;
332 if (p_vout->p_sys->i_ratio)
334 p_vout->p_sys->i_aspect = p_vout->p_sys->i_ratio * 432;
335 p_vout->p_sys->i_width = p_vout->fmt_out.i_visible_width;
336 p_vout->p_sys->i_height = p_vout->output.i_aspect
337 * p_vout->output.i_height / p_vout->p_sys->i_aspect
338 * p_vout->p_sys->i_width / p_vout->output.i_width;
339 p_vout->p_sys->i_height += p_vout->p_sys->i_height % 2;
340 p_vout->p_sys->i_x = p_vout->fmt_out.i_x_offset;
341 p_vout->p_sys->i_y = (p_vout->output.i_height - p_vout->p_sys->i_height) / 2;
346 p_vout->p_sys->i_width = p_vout->fmt_out.i_visible_width;
347 p_vout->p_sys->i_height = p_vout->fmt_out.i_visible_height;
348 p_vout->p_sys->i_x = p_vout->fmt_out.i_x_offset;
349 p_vout->p_sys->i_y = p_vout->fmt_out.i_y_offset;
352 /* Pheeew. Parsing done. */
353 msg_Dbg( p_vout, "cropping at %ix%i+%i+%i, %sautocropping",
354 p_vout->p_sys->i_width, p_vout->p_sys->i_height,
355 p_vout->p_sys->i_x, p_vout->p_sys->i_y,
356 p_vout->p_sys->b_autocrop ? "" : "not " );
357 /* Set current output image properties */
358 p_vout->p_sys->i_aspect = p_vout->fmt_out.i_aspect
359 * p_vout->fmt_out.i_visible_height / p_vout->p_sys->i_height
360 * p_vout->p_sys->i_width / p_vout->fmt_out.i_visible_width;
363 msg_Info( p_vout, "ratio %d", p_vout->p_sys->i_aspect / 432);
365 fmt.i_width = fmt.i_visible_width = p_vout->p_sys->i_width;
366 fmt.i_height = fmt.i_visible_height = p_vout->p_sys->i_height;
367 fmt.i_x_offset = fmt.i_y_offset = 0;
368 fmt.i_chroma = p_vout->render.i_chroma;
369 fmt.i_aspect = p_vout->p_sys->i_aspect;
370 fmt.i_sar_num = p_vout->p_sys->i_aspect * fmt.i_height / fmt.i_width;
371 fmt.i_sar_den = VOUT_ASPECT_FACTOR;
373 /* Try to open the real video output */
374 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
375 if( p_vout->p_sys->p_vout == NULL )
377 msg_Err( p_vout, "failed to create vout" );
378 intf_UserFatal( p_vout, false, _("Cropping failed"),
379 _("VLC could not open the video output module.") );
384 var_AddCallback( p_vout, "ratio-crop", FilterCallback, NULL );
387 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
389 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
391 ADD_PARENT_CALLBACKS( SendEventsToChild );
396 /*****************************************************************************
397 * End: terminate Crop video thread output method
398 *****************************************************************************/
399 static void End( vout_thread_t *p_vout )
403 DEL_PARENT_CALLBACKS( SendEventsToChild );
404 if( p_vout->p_sys->p_vout )
405 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
407 /* Free the fake output buffers we allocated */
408 for( i_index = I_OUTPUTPICTURES ; i_index ; )
411 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
414 if( p_vout->p_sys->p_vout )
415 vout_CloseAndRelease( p_vout->p_sys->p_vout );
418 /*****************************************************************************
419 * Destroy: destroy Crop video thread output method
420 *****************************************************************************
421 * Terminate an output method created by CropCreateOutputMethod
422 *****************************************************************************/
423 static void Destroy( vlc_object_t *p_this )
425 vout_thread_t *p_vout = (vout_thread_t *)p_this;
427 free( p_vout->p_sys );
430 /*****************************************************************************
431 * Manage: handle Crop events
432 *****************************************************************************
433 * This function should be called regularly by video output thread. It manages
434 * console events. It returns a non null value on error.
435 *****************************************************************************/
436 static int Manage( vout_thread_t *p_vout )
440 if( !p_vout->p_sys->b_changed )
445 memset( &fmt, 0, sizeof(video_format_t) );
448 msg_Dbg( p_vout, "cropping at %ix%i+%i+%i, %sautocropping",
449 p_vout->p_sys->i_width, p_vout->p_sys->i_height,
450 p_vout->p_sys->i_x, p_vout->p_sys->i_y,
451 p_vout->p_sys->b_autocrop ? "" : "not " );
453 msg_Info( p_vout, "ratio %d", p_vout->p_sys->i_aspect / 432);
456 if( p_vout->p_sys->p_vout )
458 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
459 vout_CloseAndRelease( p_vout->p_sys->p_vout );
462 fmt.i_width = fmt.i_visible_width = p_vout->p_sys->i_width;
463 fmt.i_height = fmt.i_visible_height = p_vout->p_sys->i_height;
464 fmt.i_x_offset = fmt.i_y_offset = 0;
465 fmt.i_chroma = p_vout->render.i_chroma;
466 fmt.i_aspect = p_vout->p_sys->i_aspect;
467 fmt.i_sar_num = p_vout->p_sys->i_aspect * fmt.i_height / fmt.i_width;
468 fmt.i_sar_den = VOUT_ASPECT_FACTOR;
470 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
471 if( p_vout->p_sys->p_vout == NULL )
473 msg_Err( p_vout, "failed to create vout" );
474 intf_UserFatal( p_vout, false, _("Cropping failed"),
475 _("VLC could not open the video output module.") );
478 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
480 p_vout->p_sys->b_changed = false;
481 p_vout->p_sys->i_lastchange = 0;
486 /*****************************************************************************
487 * Render: display previously rendered output
488 *****************************************************************************
489 * This function sends the currently rendered image to Crop image, waits
490 * until it is displayed and switches the two rendering buffers, preparing next
492 *****************************************************************************/
493 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
495 picture_t *p_outpic = NULL;
498 if( p_vout->p_sys->b_changed )
504 vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 )
507 if( !vlc_object_alive (p_vout) || p_vout->b_error )
509 vout_DestroyPicture( p_vout->p_sys->p_vout, p_outpic );
513 msleep( VOUT_OUTMEM_SLEEP );
516 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
517 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
519 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
521 uint8_t *p_in, *p_out, *p_out_end;
522 int i_in_pitch = p_pic->p[i_plane].i_pitch;
523 const int i_out_pitch = p_outpic->p[i_plane].i_pitch;
524 const int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
526 p_in = p_pic->p[i_plane].p_pixels
527 /* Skip the right amount of lines */
528 + i_in_pitch * ( p_pic->p[i_plane].i_visible_lines *
529 p_vout->p_sys->i_y / p_vout->output.i_height )
530 /* Skip the right amount of columns */
531 + i_in_pitch * p_vout->p_sys->i_x / p_vout->output.i_width;
533 p_out = p_outpic->p[i_plane].p_pixels;
534 p_out_end = p_out + i_out_pitch * p_outpic->p[i_plane].i_visible_lines;
536 while( p_out < p_out_end )
538 vlc_memcpy( p_out, p_in, i_copy_pitch );
540 p_out += i_out_pitch;
544 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
545 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
547 /* The source image may still be in the cache ... parse it! */
548 if( p_vout->p_sys->b_autocrop )
550 UpdateStats( p_vout, p_pic );
555 static bool NonBlackLine(uint8_t *p_in, int i_line, int i_pitch,
556 int i_visible_pitch, int i_lines,
557 int i_lumThreshold, int i_skipCountPercent,
558 int i_nonBlackPixel, int i_chroma)
560 const int i_col = i_line * i_pitch / i_lines;
561 int i_index, i_count = 0;
567 case VLC_FOURCC('I','4','4','4'):
568 case VLC_FOURCC('I','4','2','2'):
569 case VLC_FOURCC('I','4','2','0'):
570 case VLC_FOURCC('Y','V','1','2'):
571 case VLC_FOURCC('I','Y','U','V'):
572 case VLC_FOURCC('I','4','1','1'):
573 case VLC_FOURCC('I','4','1','0'):
574 case VLC_FOURCC('Y','V','U','9'):
575 case VLC_FOURCC('Y','U','V','A'):
576 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
577 for (i_index = i_col/2 + i_skipCount/2;
578 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
581 i_count += (p_in[i_index] > i_lumThreshold);
582 if (i_count > i_nonBlackPixel) break;
586 case VLC_FOURCC('R','G','B','2'): // packed by 1
587 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
588 for (i_index = i_col/2 + i_skipCount/2;
589 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
592 i_count += (p_in[i_index] > i_lumThreshold);
593 if (i_count > i_nonBlackPixel) break;
596 case VLC_FOURCC('R','V','1','5'): // packed by 2
597 case VLC_FOURCC('R','V','1','6'): // packed by 2
598 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
599 for (i_index = i_col/2 + i_skipCount/2 -
600 (i_col/2 + i_skipCount/2) % 2;
601 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
604 i_count += (p_in[i_index] > i_lumThreshold) &&
605 (p_in[i_index + 1] > i_lumThreshold);
606 if (i_count > i_nonBlackPixel) break;
609 case VLC_FOURCC('R','V','2','4'): // packed by 3
610 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
611 for (i_index = i_col/2 + i_skipCount/2 - (i_col/2 + i_skipCount/2) % 3; i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2; i_index+=3)
613 i_count += (p_in[i_index] > i_lumThreshold) &&
614 (p_in[i_index + 1] > i_lumThreshold) &&
615 (p_in[i_index + 2] > i_lumThreshold);
616 if (i_count > i_nonBlackPixel) break;
619 case VLC_FOURCC('R','V','3','2'): // packed by 4
620 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
621 for (i_index = i_col/2 + i_skipCount/2 - (i_col/2 + i_skipCount/2) % 4; i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2; i_index+=4)
623 i_count += (uint32_t)(*(p_in + i_index)) > (uint32_t)i_lumThreshold;
624 if (i_count > i_nonBlackPixel) break;
628 case VLC_FOURCC('Y','U','Y','2'): // packed by 2
629 case VLC_FOURCC('Y','U','N','V'): // packed by 2
630 case VLC_FOURCC('U','Y','V','Y'): // packed by 2
631 case VLC_FOURCC('U','Y','N','V'): // packed by 2
632 case VLC_FOURCC('Y','4','2','2'): // packed by 2
633 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
634 for (i_index = (i_col/2 + i_skipCount/2) -
635 (i_col/2 + i_skipCount/2) % 2;
636 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
639 i_count += (p_in[i_index] > i_lumThreshold);
640 if (i_count > i_nonBlackPixel) break;
646 return (i_count > i_nonBlackPixel);
650 static void UpdateStats( vout_thread_t *p_vout, picture_t *p_pic )
652 uint8_t *p_in = p_pic->p[0].p_pixels;
653 int i_pitch = p_pic->p[0].i_pitch;
654 int i_visible_pitch = p_pic->p[0].i_visible_pitch;
655 int i_lines = p_pic->p[0].i_visible_lines;
656 int i_firstwhite = -1, i_lastwhite = -1, i;
658 int i_time = p_vout->p_sys->i_time;
659 int i_diff = p_vout->p_sys->i_diff;
661 if (!p_vout->p_sys->i_ratio)
663 /* Determine where black borders are */
664 for( i = 0 ; i < i_lines ; i++)
666 if (NonBlackLine(p_in, i, i_pitch, i_visible_pitch, i_lines,
667 p_vout->p_sys->i_threshold,
668 p_vout->p_sys->i_skipPercent,
669 p_vout->p_sys->i_nonBlackPixel,
670 p_vout->output.i_chroma))
673 i_lastwhite = i_lines - i;
679 /* Decide whether it's worth changing the size */
680 if( i_lastwhite == -1 )
682 p_vout->p_sys->i_lastchange = 0;
686 if( (i_lastwhite - i_firstwhite) < (int) (p_vout->p_sys->i_height / 2) )
688 p_vout->p_sys->i_lastchange = 0;
692 if (p_vout->output.i_aspect
693 * p_vout->output.i_height /
694 (i_lastwhite - i_firstwhite + 1)
695 * p_vout->p_sys->i_width /
696 p_vout->output.i_width >
697 p_vout->p_sys->i_ratio_max * 432)
699 int i_height = ((p_vout->output.i_aspect / 432) *
700 p_vout->output.i_height * p_vout->p_sys->i_width) /
701 (p_vout->output.i_width * p_vout->p_sys->i_ratio_max);
702 i_firstwhite = (p_vout->output.i_height - i_height) / 2;
703 i_lastwhite = p_vout->output.i_height - i_firstwhite;
705 p_vout->p_sys->i_lastchange = 0;
710 if( (i_lastwhite - i_firstwhite) <
711 (int) (p_vout->p_sys->i_height + i_diff)
712 && (i_lastwhite - i_firstwhite + i_diff) >
713 (int) p_vout->p_sys->i_height )
715 p_vout->p_sys->i_lastchange = 0;
719 /* We need at least 'i_time' images to make up our mind */
720 p_vout->p_sys->i_lastchange++;
721 if( p_vout->p_sys->i_lastchange < (unsigned int)i_time )
728 if ( p_vout->p_sys->i_lastchange >= (unsigned int)i_time )
730 p_vout->p_sys->i_aspect = p_vout->p_sys->i_ratio * 432;
731 int i_height = p_vout->output.i_aspect
732 * p_vout->output.i_height /
733 p_vout->p_sys->i_aspect
734 * p_vout->p_sys->i_width /
735 p_vout->output.i_width;
736 i_firstwhite = (p_vout->output.i_height - i_height) / 2;
737 i_lastwhite = p_vout->output.i_height - i_firstwhite;
746 /* Determine where black borders are */
747 switch( p_vout->output.i_chroma )
749 case VLC_FOURCC('I','4','2','0'):
750 /* XXX: Do not laugh ! I know this is very naive. But it's just a
751 * proof of concept code snippet... */
752 for( i = i_lines ; i-- ; )
754 const int i_col = i * i_pitch / i_lines;
756 if( p_in[i_col/2] > 40
757 && p_in[i_visible_pitch/2] > 40
758 && p_in[i_visible_pitch/2 + i_col/2] > 40 )
760 if( i_lastwhite == -1 )
774 /* Decide whether it's worth changing the size */
775 if( i_lastwhite == -1 )
777 p_vout->p_sys->i_lastchange = 0;
781 if( (unsigned int)(i_lastwhite - i_firstwhite)
782 < p_vout->p_sys->i_height / 2 )
784 p_vout->p_sys->i_lastchange = 0;
788 if( (unsigned int)(i_lastwhite - i_firstwhite)
789 < p_vout->p_sys->i_height + 16
790 && (unsigned int)(i_lastwhite - i_firstwhite + 16)
791 > p_vout->p_sys->i_height )
793 p_vout->p_sys->i_lastchange = 0;
797 /* We need at least 25 images to make up our mind */
798 p_vout->p_sys->i_lastchange++;
799 if( p_vout->p_sys->i_lastchange < 25 )
803 #endif //BEST_AUTOCROP
805 /* Tune a few values */
806 if( i_firstwhite & 1 )
811 if( !(i_lastwhite & 1) )
817 p_vout->p_sys->i_y = i_firstwhite;
818 p_vout->p_sys->i_height = i_lastwhite - i_firstwhite + 1;
820 // check p_vout->p_sys->i_height <= p_vout->output.i_height
821 if (p_vout->p_sys->i_height > p_vout->output.i_height)
822 p_vout->p_sys->i_height = p_vout->output.i_height;
825 p_vout->p_sys->i_aspect = p_vout->output.i_aspect
826 * p_vout->output.i_height / p_vout->p_sys->i_height
827 * p_vout->p_sys->i_width / p_vout->output.i_width;
829 p_vout->p_sys->b_changed = true;
832 /*****************************************************************************
833 * SendEvents: forward mouse and keyboard events to the parent p_vout
834 *****************************************************************************/
835 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
836 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
838 VLC_UNUSED(p_this); VLC_UNUSED(oldval);
839 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
840 vlc_value_t sentval = newval;
842 /* Translate the mouse coordinates */
843 if( !strcmp( psz_var, "mouse-x" ) )
845 sentval.i_int += p_vout->p_sys->i_x;
847 else if( !strcmp( psz_var, "mouse-y" ) )
849 sentval.i_int += p_vout->p_sys->i_y;
852 var_Set( p_vout, psz_var, sentval );
857 /*****************************************************************************
858 * SendEventsToChild: forward events to the child/children vout
859 *****************************************************************************/
860 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
861 vlc_value_t oldval, vlc_value_t newval, void *p_data )
863 VLC_UNUSED(p_data); VLC_UNUSED(oldval);
864 vout_thread_t *p_vout = (vout_thread_t *)p_this;
865 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
870 /*****************************************************************************
871 * FilterCallback: called when changing the ratio on the fly.
872 *****************************************************************************/
873 static int FilterCallback( vlc_object_t *p_this, char const *psz_var,
874 vlc_value_t oldval, vlc_value_t newval,
877 VLC_UNUSED(p_data); VLC_UNUSED(oldval);
878 vout_thread_t * p_vout = (vout_thread_t *)p_this;
880 if( !strcmp( psz_var, "ratio-crop" ) )
882 if ( !strcmp( newval.psz_string, "Auto" ) )
883 p_vout->p_sys->i_ratio = 0;
886 p_vout->p_sys->i_ratio = (unsigned int)atoi(newval.psz_string);
887 p_vout->p_sys->i_lastchange = p_vout->p_sys->i_time;
888 p_vout->p_sys->b_autocrop = true;
890 if (p_vout->p_sys->i_ratio)
892 if (p_vout->p_sys->i_ratio < (p_vout->output.i_width * 1000) /
893 p_vout->output.i_height)
894 p_vout->p_sys->i_ratio = (p_vout->output.i_width * 1000) /
895 p_vout->output.i_height;
896 if (p_vout->p_sys->i_ratio < p_vout->output.i_aspect / 432)
897 p_vout->p_sys->i_ratio = p_vout->output.i_aspect / 432;