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 *****************************************************************************/
29 #include <stdlib.h> /* malloc(), free() */
34 #include <vlc_interface.h>
36 #include "filter_common.h"
38 #define BEST_AUTOCROP 1
40 #define RATIO_MAX 15000 // 10*4/3 for a 360
43 /*****************************************************************************
45 *****************************************************************************/
46 static int Create ( vlc_object_t * );
47 static void Destroy ( vlc_object_t * );
49 static int Init ( vout_thread_t * );
50 static void End ( vout_thread_t * );
51 static int Manage ( vout_thread_t * );
52 static void Render ( vout_thread_t *, picture_t * );
54 static void UpdateStats ( vout_thread_t *, picture_t * );
56 static int SendEvents( vlc_object_t *, char const *,
57 vlc_value_t, vlc_value_t, void * );
60 /*****************************************************************************
62 *****************************************************************************/
63 static int FilterCallback ( vlc_object_t *, char const *,
64 vlc_value_t, vlc_value_t, void * );
67 /*****************************************************************************
69 *****************************************************************************/
70 #define GEOMETRY_TEXT N_("Crop geometry (pixels)")
71 #define GEOMETRY_LONGTEXT N_("Set the geometry of the zone to crop. This is set as <width> x <height> + <left offset> + <top offset>.")
73 #define AUTOCROP_TEXT N_("Automatic cropping")
74 #define AUTOCROP_LONGTEXT N_("Automatically detect black borders and crop them.")
77 #define RATIOMAX_TEXT N_("Ratio max (x 1000)")
78 #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.")
80 #define RATIO_TEXT N_("Manual ratio")
81 #define RATIO_LONGTEXT N_("Force a ratio (0 for automatic). Value is x1000: 1333 means 4/3.")
83 #define TIME_TEXT N_("Number of images for change")
84 #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.")
86 #define DIFF_TEXT N_("Number of lines for change")
87 #define DIFF_LONGTEXT N_("The minimum difference in the number of detected black lines to consider that ratio changed and trigger recrop.")
89 #define NBP_TEXT N_("Number of non black pixels ")
90 #define NBP_LONGTEXT N_("The maximum of non-black pixels in a line to consider"\
91 " that the line is black.")
93 #define SKIP_TEXT N_("Skip percentage (%)")
94 #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.")
96 #define LUM_TEXT N_("Luminance threshold ")
97 #define LUM_LONGTEXT N_("Maximum luminance to consider a pixel as black (0-255).")
101 set_description( _("Crop video filter") );
102 set_shortname( _("Crop" ));
103 set_category( CAT_VIDEO );
104 set_subcategory( SUBCAT_VIDEO_VFILTER );
105 set_capability( "video filter", 0 );
107 add_string( "crop-geometry", NULL, NULL, GEOMETRY_TEXT,
108 GEOMETRY_LONGTEXT, VLC_FALSE );
109 add_bool( "autocrop", 0, NULL, AUTOCROP_TEXT,
110 AUTOCROP_LONGTEXT, VLC_FALSE );
113 add_integer_with_range( "autocrop-ratio-max", 2405, 0, RATIO_MAX, NULL,
114 RATIOMAX_TEXT, RATIOMAX_LONGTEXT, VLC_TRUE );
116 add_integer_with_range( "crop-ratio", 0, 0, RATIO_MAX, NULL, RATIO_TEXT,
117 RATIO_LONGTEXT, VLC_FALSE );
118 add_integer( "autocrop-time", 25, NULL, TIME_TEXT,
119 TIME_LONGTEXT, VLC_TRUE );
120 add_integer( "autocrop-diff", 16, NULL, DIFF_TEXT,
121 DIFF_LONGTEXT, VLC_TRUE );
123 add_integer( "autocrop-non-black-pixels", 3, NULL,
124 NBP_TEXT, NBP_LONGTEXT, VLC_TRUE );
126 add_integer_with_range( "autocrop-skip-percent", 17, 0, 100, NULL,
127 SKIP_TEXT, SKIP_LONGTEXT, VLC_TRUE );
129 add_integer_with_range( "autocrop-luminance-threshold", 40, 0, 128, NULL,
130 LUM_TEXT, LUM_LONGTEXT, VLC_TRUE );
131 #endif //BEST_AUTOCROP
133 add_shortcut( "crop" );
134 set_callbacks( Create, Destroy );
137 /*****************************************************************************
138 * vout_sys_t: Crop video output method descriptor
139 *****************************************************************************
140 * This structure is part of the video output thread descriptor.
141 * It describes the Crop specific properties of an output thread.
142 *****************************************************************************/
145 vout_thread_t *p_vout;
147 unsigned int i_x, i_y;
148 unsigned int i_width, i_height, i_aspect;
150 vlc_bool_t b_autocrop;
152 /* Autocrop specific variables */
153 unsigned int i_lastchange;
154 vlc_bool_t b_changed;
156 unsigned int i_ratio_max;
157 unsigned int i_threshold, i_skipPercent, i_nonBlackPixel, i_diff, i_time;
158 unsigned int i_ratio;
163 /*****************************************************************************
164 * Control: control facility for the vout (forwards to child vout)
165 *****************************************************************************/
166 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
168 return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
171 /*****************************************************************************
172 * Create: allocates Crop video thread output method
173 *****************************************************************************
174 * This function allocates and initializes a Crop vout method.
175 *****************************************************************************/
176 static int Create( vlc_object_t *p_this )
178 vout_thread_t *p_vout = (vout_thread_t *)p_this;
180 /* Allocate structure */
181 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
182 if( p_vout->p_sys == NULL )
184 msg_Err( p_vout, "out of memory" );
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 = VLC_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, VLC_FALSE, _("Cropping failed"),
379 _("VLC could not open the video output module.") );
383 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
385 ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
388 var_AddCallback( p_vout, "ratio-crop", FilterCallback, NULL );
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 /* Free the fake output buffers we allocated */
404 for( i_index = I_OUTPUTPICTURES ; i_index ; )
407 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
411 /*****************************************************************************
412 * Destroy: destroy Crop video thread output method
413 *****************************************************************************
414 * Terminate an output method created by CropCreateOutputMethod
415 *****************************************************************************/
416 static void Destroy( vlc_object_t *p_this )
418 vout_thread_t *p_vout = (vout_thread_t *)p_this;
420 if( p_vout->p_sys->p_vout )
422 DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
423 vlc_object_detach( p_vout->p_sys->p_vout );
424 vout_Destroy( p_vout->p_sys->p_vout );
427 DEL_PARENT_CALLBACKS( SendEventsToChild );
429 free( p_vout->p_sys );
432 /*****************************************************************************
433 * Manage: handle Crop events
434 *****************************************************************************
435 * This function should be called regularly by video output thread. It manages
436 * console events. It returns a non null value on error.
437 *****************************************************************************/
438 static int Manage( vout_thread_t *p_vout )
442 if( !p_vout->p_sys->b_changed )
447 memset( &fmt, 0, sizeof(video_format_t) );
450 msg_Dbg( p_vout, "cropping at %ix%i+%i+%i, %sautocropping",
451 p_vout->p_sys->i_width, p_vout->p_sys->i_height,
452 p_vout->p_sys->i_x, p_vout->p_sys->i_y,
453 p_vout->p_sys->b_autocrop ? "" : "not " );
455 msg_Info( p_vout, "ratio %d", p_vout->p_sys->i_aspect / 432);
458 vout_Destroy( p_vout->p_sys->p_vout );
460 fmt.i_width = fmt.i_visible_width = p_vout->p_sys->i_width;
461 fmt.i_height = fmt.i_visible_height = p_vout->p_sys->i_height;
462 fmt.i_x_offset = fmt.i_y_offset = 0;
463 fmt.i_chroma = p_vout->render.i_chroma;
464 fmt.i_aspect = p_vout->p_sys->i_aspect;
465 fmt.i_sar_num = p_vout->p_sys->i_aspect * fmt.i_height / fmt.i_width;
466 fmt.i_sar_den = VOUT_ASPECT_FACTOR;
468 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
469 if( p_vout->p_sys->p_vout == NULL )
471 msg_Err( p_vout, "failed to create vout" );
472 intf_UserFatal( p_vout, VLC_FALSE, _("Cropping failed"),
473 _("VLC could not open the video output module.") );
477 p_vout->p_sys->b_changed = VLC_FALSE;
478 p_vout->p_sys->i_lastchange = 0;
483 /*****************************************************************************
484 * Render: display previously rendered output
485 *****************************************************************************
486 * This function sends the currently rendered image to Crop image, waits
487 * until it is displayed and switches the two rendering buffers, preparing next
489 *****************************************************************************/
490 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
492 picture_t *p_outpic = NULL;
495 if( p_vout->p_sys->b_changed )
501 vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 )
504 if( p_vout->b_die || p_vout->b_error )
506 vout_DestroyPicture( p_vout->p_sys->p_vout, p_outpic );
510 msleep( VOUT_OUTMEM_SLEEP );
513 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
514 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
516 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
518 uint8_t *p_in, *p_out, *p_out_end;
519 int i_in_pitch = p_pic->p[i_plane].i_pitch;
520 const int i_out_pitch = p_outpic->p[i_plane].i_pitch;
521 const int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
523 p_in = p_pic->p[i_plane].p_pixels
524 /* Skip the right amount of lines */
525 + i_in_pitch * ( p_pic->p[i_plane].i_visible_lines *
526 p_vout->p_sys->i_y / p_vout->output.i_height )
527 /* Skip the right amount of columns */
528 + i_in_pitch * p_vout->p_sys->i_x / p_vout->output.i_width;
530 p_out = p_outpic->p[i_plane].p_pixels;
531 p_out_end = p_out + i_out_pitch * p_outpic->p[i_plane].i_visible_lines;
533 while( p_out < p_out_end )
535 p_vout->p_libvlc->pf_memcpy( p_out, p_in, i_copy_pitch );
537 p_out += i_out_pitch;
541 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
542 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
544 /* The source image may still be in the cache ... parse it! */
545 if( p_vout->p_sys->b_autocrop )
547 UpdateStats( p_vout, p_pic );
552 static vlc_bool_t NonBlackLine(uint8_t *p_in, int i_line, int i_pitch,
553 int i_visible_pitch, int i_lines,
554 int i_lumThreshold, int i_skipCountPercent,
555 int i_nonBlackPixel, int i_chroma)
557 const int i_col = i_line * i_pitch / i_lines;
558 int i_index, i_count = 0;
564 case VLC_FOURCC('I','4','4','4'):
565 case VLC_FOURCC('I','4','2','2'):
566 case VLC_FOURCC('I','4','2','0'):
567 case VLC_FOURCC('Y','V','1','2'):
568 case VLC_FOURCC('I','Y','U','V'):
569 case VLC_FOURCC('I','4','1','1'):
570 case VLC_FOURCC('I','4','1','0'):
571 case VLC_FOURCC('Y','V','U','9'):
572 case VLC_FOURCC('Y','U','V','A'):
573 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
574 for (i_index = i_col/2 + i_skipCount/2;
575 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
578 i_count += (p_in[i_index] > i_lumThreshold);
579 if (i_count > i_nonBlackPixel) break;
583 case VLC_FOURCC('R','G','B','2'): // packed by 1
584 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
585 for (i_index = i_col/2 + i_skipCount/2;
586 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
589 i_count += (p_in[i_index] > i_lumThreshold);
590 if (i_count > i_nonBlackPixel) break;
593 case VLC_FOURCC('R','V','1','5'): // packed by 2
594 case VLC_FOURCC('R','V','1','6'): // packed by 2
595 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
596 for (i_index = i_col/2 + i_skipCount/2 -
597 (i_col/2 + i_skipCount/2) % 2;
598 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
601 i_count += (p_in[i_index] > i_lumThreshold) &&
602 (p_in[i_index + 1] > i_lumThreshold);
603 if (i_count > i_nonBlackPixel) break;
606 case VLC_FOURCC('R','V','2','4'): // packed by 3
607 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
608 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)
610 i_count += (p_in[i_index] > i_lumThreshold) &&
611 (p_in[i_index + 1] > i_lumThreshold) &&
612 (p_in[i_index + 2] > i_lumThreshold);
613 if (i_count > i_nonBlackPixel) break;
616 case VLC_FOURCC('R','V','3','2'): // packed by 4
617 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
618 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)
620 i_count += (uint32_t)(*(p_in + i_index)) > (uint32_t)i_lumThreshold;
621 if (i_count > i_nonBlackPixel) break;
625 case VLC_FOURCC('Y','U','Y','2'): // packed by 2
626 case VLC_FOURCC('Y','U','N','V'): // packed by 2
627 case VLC_FOURCC('U','Y','V','Y'): // packed by 2
628 case VLC_FOURCC('U','Y','N','V'): // packed by 2
629 case VLC_FOURCC('Y','4','2','2'): // packed by 2
630 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
631 for (i_index = (i_col/2 + i_skipCount/2) -
632 (i_col/2 + i_skipCount/2) % 2;
633 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
636 i_count += (p_in[i_index] > i_lumThreshold);
637 if (i_count > i_nonBlackPixel) break;
643 return (i_count > i_nonBlackPixel);
647 static void UpdateStats( vout_thread_t *p_vout, picture_t *p_pic )
649 uint8_t *p_in = p_pic->p[0].p_pixels;
650 int i_pitch = p_pic->p[0].i_pitch;
651 int i_visible_pitch = p_pic->p[0].i_visible_pitch;
652 int i_lines = p_pic->p[0].i_visible_lines;
653 int i_firstwhite = -1, i_lastwhite = -1, i;
655 int i_time = p_vout->p_sys->i_time;
656 int i_diff = p_vout->p_sys->i_diff;
658 if (!p_vout->p_sys->i_ratio)
660 /* Determine where black borders are */
661 for( i = 0 ; i < i_lines ; i++)
663 if (NonBlackLine(p_in, i, i_pitch, i_visible_pitch, i_lines,
664 p_vout->p_sys->i_threshold,
665 p_vout->p_sys->i_skipPercent,
666 p_vout->p_sys->i_nonBlackPixel,
667 p_vout->output.i_chroma))
670 i_lastwhite = i_lines - i;
676 /* Decide whether it's worth changing the size */
677 if( i_lastwhite == -1 )
679 p_vout->p_sys->i_lastchange = 0;
683 if( (i_lastwhite - i_firstwhite) < (int) (p_vout->p_sys->i_height / 2) )
685 p_vout->p_sys->i_lastchange = 0;
689 if (p_vout->output.i_aspect
690 * p_vout->output.i_height /
691 (i_lastwhite - i_firstwhite + 1)
692 * p_vout->p_sys->i_width /
693 p_vout->output.i_width >
694 p_vout->p_sys->i_ratio_max * 432)
696 int i_height = ((p_vout->output.i_aspect / 432) *
697 p_vout->output.i_height * p_vout->p_sys->i_width) /
698 (p_vout->output.i_width * p_vout->p_sys->i_ratio_max);
699 i_firstwhite = (p_vout->output.i_height - i_height) / 2;
700 i_lastwhite = p_vout->output.i_height - i_firstwhite;
702 p_vout->p_sys->i_lastchange = 0;
707 if( (i_lastwhite - i_firstwhite) <
708 (int) (p_vout->p_sys->i_height + i_diff)
709 && (i_lastwhite - i_firstwhite + i_diff) >
710 (int) p_vout->p_sys->i_height )
712 p_vout->p_sys->i_lastchange = 0;
716 /* We need at least 'i_time' images to make up our mind */
717 p_vout->p_sys->i_lastchange++;
718 if( p_vout->p_sys->i_lastchange < (unsigned int)i_time )
725 if ( p_vout->p_sys->i_lastchange >= (unsigned int)i_time )
727 p_vout->p_sys->i_aspect = p_vout->p_sys->i_ratio * 432;
728 int i_height = p_vout->output.i_aspect
729 * p_vout->output.i_height /
730 p_vout->p_sys->i_aspect
731 * p_vout->p_sys->i_width /
732 p_vout->output.i_width;
733 i_firstwhite = (p_vout->output.i_height - i_height) / 2;
734 i_lastwhite = p_vout->output.i_height - i_firstwhite;
743 /* Determine where black borders are */
744 switch( p_vout->output.i_chroma )
746 case VLC_FOURCC('I','4','2','0'):
747 /* XXX: Do not laugh ! I know this is very naive. But it's just a
748 * proof of concept code snippet... */
749 for( i = i_lines ; i-- ; )
751 const int i_col = i * i_pitch / i_lines;
753 if( p_in[i_col/2] > 40
754 && p_in[i_visible_pitch/2] > 40
755 && p_in[i_visible_pitch/2 + i_col/2] > 40 )
757 if( i_lastwhite == -1 )
771 /* Decide whether it's worth changing the size */
772 if( i_lastwhite == -1 )
774 p_vout->p_sys->i_lastchange = 0;
778 if( (unsigned int)(i_lastwhite - i_firstwhite)
779 < p_vout->p_sys->i_height / 2 )
781 p_vout->p_sys->i_lastchange = 0;
785 if( (unsigned int)(i_lastwhite - i_firstwhite)
786 < p_vout->p_sys->i_height + 16
787 && (unsigned int)(i_lastwhite - i_firstwhite + 16)
788 > p_vout->p_sys->i_height )
790 p_vout->p_sys->i_lastchange = 0;
794 /* We need at least 25 images to make up our mind */
795 p_vout->p_sys->i_lastchange++;
796 if( p_vout->p_sys->i_lastchange < 25 )
800 #endif //BEST_AUTOCROP
802 /* Tune a few values */
803 if( i_firstwhite & 1 )
808 if( !(i_lastwhite & 1) )
814 p_vout->p_sys->i_y = i_firstwhite;
815 p_vout->p_sys->i_height = i_lastwhite - i_firstwhite + 1;
817 // check p_vout->p_sys->i_height <= p_vout->output.i_height
818 if (p_vout->p_sys->i_height > p_vout->output.i_height)
819 p_vout->p_sys->i_height = p_vout->output.i_height;
822 p_vout->p_sys->i_aspect = p_vout->output.i_aspect
823 * p_vout->output.i_height / p_vout->p_sys->i_height
824 * p_vout->p_sys->i_width / p_vout->output.i_width;
826 p_vout->p_sys->b_changed = VLC_TRUE;
829 /*****************************************************************************
830 * SendEvents: forward mouse and keyboard events to the parent p_vout
831 *****************************************************************************/
832 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
833 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
835 vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
836 vlc_value_t sentval = newval;
838 /* Translate the mouse coordinates */
839 if( !strcmp( psz_var, "mouse-x" ) )
841 sentval.i_int += p_vout->p_sys->i_x;
843 else if( !strcmp( psz_var, "mouse-y" ) )
845 sentval.i_int += p_vout->p_sys->i_y;
848 var_Set( p_vout, psz_var, sentval );
853 /*****************************************************************************
854 * SendEventsToChild: forward events to the child/children vout
855 *****************************************************************************/
856 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
857 vlc_value_t oldval, vlc_value_t newval, void *p_data )
859 vout_thread_t *p_vout = (vout_thread_t *)p_this;
860 var_Set( p_vout->p_sys->p_vout, psz_var, newval );
865 /*****************************************************************************
866 * FilterCallback: called when changing the ratio on the fly.
867 *****************************************************************************/
868 static int FilterCallback( vlc_object_t *p_this, char const *psz_var,
869 vlc_value_t oldval, vlc_value_t newval,
872 vout_thread_t * p_vout = (vout_thread_t *)p_this;
874 if( !strcmp( psz_var, "ratio-crop" ) )
876 if ( !strcmp( newval.psz_string, "Auto" ) )
877 p_vout->p_sys->i_ratio = 0;
880 p_vout->p_sys->i_ratio = (unsigned int)atoi(newval.psz_string);
881 p_vout->p_sys->i_lastchange = p_vout->p_sys->i_time;
882 p_vout->p_sys->b_autocrop = VLC_TRUE;
884 if (p_vout->p_sys->i_ratio)
886 if (p_vout->p_sys->i_ratio < (p_vout->output.i_width * 1000) /
887 p_vout->output.i_height)
888 p_vout->p_sys->i_ratio = (p_vout->output.i_width * 1000) /
889 p_vout->output.i_height;
890 if (p_vout->p_sys->i_ratio < p_vout->output.i_aspect / 432)
891 p_vout->p_sys->i_ratio = p_vout->output.i_aspect / 432;