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_dialog.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 MouseEvent( 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 )
206 I_OUTPUTPICTURES = 0;
207 memset( &fmt, 0, sizeof(video_format_t) );
209 p_vout->p_sys->i_lastchange = 0;
210 p_vout->p_sys->b_changed = false;
212 /* Initialize the output structure */
213 p_vout->output.i_chroma = p_vout->render.i_chroma;
214 p_vout->output.i_width = p_vout->render.i_width;
215 p_vout->output.i_height = p_vout->render.i_height;
216 p_vout->output.i_aspect = p_vout->render.i_aspect;
217 p_vout->fmt_out = p_vout->fmt_in;
219 /* Shall we use autocrop ? */
220 p_vout->p_sys->b_autocrop = config_GetInt( p_vout, "autocrop" );
222 p_vout->p_sys->i_ratio_max = config_GetInt( p_vout, "autocrop-ratio-max" );
223 p_vout->p_sys->i_threshold =
224 config_GetInt( p_vout, "autocrop-luminance-threshold" );
225 p_vout->p_sys->i_skipPercent =
226 config_GetInt( p_vout, "autocrop-skip-percent" );
227 p_vout->p_sys->i_nonBlackPixel =
228 config_GetInt( p_vout, "autocrop-non-black-pixels" );
229 p_vout->p_sys->i_diff = config_GetInt( p_vout, "autocrop-diff" );
230 p_vout->p_sys->i_time = config_GetInt( p_vout, "autocrop-time" );
232 var_Get( p_vout, "ratio-crop", &val );
233 val.psz_string = "0";
234 var_SetString( p_vout, "ratio-crop", val.psz_string);
236 if (p_vout->p_sys->b_autocrop)
237 p_vout->p_sys->i_ratio = 0;
240 p_vout->p_sys->i_ratio = config_GetInt( p_vout, "crop-ratio" );
241 // ratio < width / height => ratio = 0 (unchange ratio)
242 if (p_vout->p_sys->i_ratio < (p_vout->output.i_width * 1000) / p_vout->output.i_height)
243 p_vout->p_sys->i_ratio = 0;
248 /* Get geometry value from the user */
249 psz_var = config_GetPsz( p_vout, "crop-geometry" );
252 char *psz_parser, *psz_tmp;
254 psz_parser = psz_tmp = psz_var;
255 while( *psz_tmp && *psz_tmp != 'x' ) psz_tmp++;
260 p_vout->p_sys->i_width = atoi( psz_parser );
262 psz_parser = ++psz_tmp;
263 while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;
268 p_vout->p_sys->i_height = atoi( psz_parser );
270 psz_parser = ++psz_tmp;
271 while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;
276 p_vout->p_sys->i_x = atoi( psz_parser );
277 p_vout->p_sys->i_y = atoi( ++psz_tmp );
281 p_vout->p_sys->i_x = atoi( psz_parser );
283 ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
288 p_vout->p_sys->i_height = atoi( psz_parser );
290 ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
292 ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
297 p_vout->p_sys->i_width = atoi( psz_parser );
298 p_vout->p_sys->i_height = p_vout->output.i_height;
300 ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
302 ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
305 /* Check for validity */
306 if( p_vout->p_sys->i_x + p_vout->p_sys->i_width
307 > p_vout->output.i_width )
309 p_vout->p_sys->i_x = 0;
310 if( p_vout->p_sys->i_width > p_vout->output.i_width )
312 p_vout->p_sys->i_width = p_vout->output.i_width;
316 if( p_vout->p_sys->i_y + p_vout->p_sys->i_height
317 > p_vout->output.i_height )
319 p_vout->p_sys->i_y = 0;
320 if( p_vout->p_sys->i_height > p_vout->output.i_height )
322 p_vout->p_sys->i_height = p_vout->output.i_height;
330 if (p_vout->p_sys->i_ratio)
332 p_vout->p_sys->i_aspect = p_vout->p_sys->i_ratio * 432;
333 p_vout->p_sys->i_width = p_vout->fmt_out.i_visible_width;
334 p_vout->p_sys->i_height = p_vout->output.i_aspect
335 * p_vout->output.i_height / p_vout->p_sys->i_aspect
336 * p_vout->p_sys->i_width / p_vout->output.i_width;
337 p_vout->p_sys->i_height += p_vout->p_sys->i_height % 2;
338 p_vout->p_sys->i_x = p_vout->fmt_out.i_x_offset;
339 p_vout->p_sys->i_y = (p_vout->output.i_height - p_vout->p_sys->i_height) / 2;
344 p_vout->p_sys->i_width = p_vout->fmt_out.i_visible_width;
345 p_vout->p_sys->i_height = p_vout->fmt_out.i_visible_height;
346 p_vout->p_sys->i_x = p_vout->fmt_out.i_x_offset;
347 p_vout->p_sys->i_y = p_vout->fmt_out.i_y_offset;
350 /* Pheeew. Parsing done. */
351 msg_Dbg( p_vout, "cropping at %ix%i+%i+%i, %sautocropping",
352 p_vout->p_sys->i_width, p_vout->p_sys->i_height,
353 p_vout->p_sys->i_x, p_vout->p_sys->i_y,
354 p_vout->p_sys->b_autocrop ? "" : "not " );
355 /* Set current output image properties */
356 p_vout->p_sys->i_aspect = p_vout->fmt_out.i_aspect
357 * p_vout->fmt_out.i_visible_height / p_vout->p_sys->i_height
358 * p_vout->p_sys->i_width / p_vout->fmt_out.i_visible_width;
361 msg_Info( p_vout, "ratio %d", p_vout->p_sys->i_aspect / 432);
363 fmt.i_width = fmt.i_visible_width = p_vout->p_sys->i_width;
364 fmt.i_height = fmt.i_visible_height = p_vout->p_sys->i_height;
365 fmt.i_x_offset = fmt.i_y_offset = 0;
366 fmt.i_chroma = p_vout->render.i_chroma;
367 fmt.i_aspect = p_vout->p_sys->i_aspect;
368 fmt.i_sar_num = p_vout->p_sys->i_aspect * fmt.i_height / fmt.i_width;
369 fmt.i_sar_den = VOUT_ASPECT_FACTOR;
371 /* Try to open the real video output */
372 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
373 if( p_vout->p_sys->p_vout == NULL )
375 msg_Err( p_vout, "failed to create vout" );
376 dialog_Fatal( p_vout, _("Cropping failed"),
377 _("VLC could not open the video output module.") );
382 var_AddCallback( p_vout, "ratio-crop", FilterCallback, NULL );
385 vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );
387 vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
392 /*****************************************************************************
393 * End: terminate Crop video thread output method
394 *****************************************************************************/
395 static void End( vout_thread_t *p_vout )
397 vout_sys_t *p_sys = p_vout->p_sys;
401 vout_filter_DelChild( p_vout, p_sys->p_vout, MouseEvent );
402 vout_CloseAndRelease( p_sys->p_vout );
405 vout_filter_ReleaseDirectBuffers( p_vout );
408 /*****************************************************************************
409 * Destroy: destroy Crop video thread output method
410 *****************************************************************************
411 * Terminate an output method created by CropCreateOutputMethod
412 *****************************************************************************/
413 static void Destroy( vlc_object_t *p_this )
415 vout_thread_t *p_vout = (vout_thread_t *)p_this;
417 free( p_vout->p_sys );
420 /*****************************************************************************
421 * Manage: handle Crop events
422 *****************************************************************************
423 * This function should be called regularly by video output thread. It manages
424 * console events. It returns a non null value on error.
425 *****************************************************************************/
426 static int Manage( vout_thread_t *p_vout )
430 if( !p_vout->p_sys->b_changed )
435 memset( &fmt, 0, sizeof(video_format_t) );
438 msg_Dbg( p_vout, "cropping at %ix%i+%i+%i, %sautocropping",
439 p_vout->p_sys->i_width, p_vout->p_sys->i_height,
440 p_vout->p_sys->i_x, p_vout->p_sys->i_y,
441 p_vout->p_sys->b_autocrop ? "" : "not " );
443 msg_Info( p_vout, "ratio %d", p_vout->p_sys->i_aspect / 432);
446 if( p_vout->p_sys->p_vout )
448 vout_filter_DelChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
449 vout_CloseAndRelease( p_vout->p_sys->p_vout );
452 fmt.i_width = fmt.i_visible_width = p_vout->p_sys->i_width;
453 fmt.i_height = fmt.i_visible_height = p_vout->p_sys->i_height;
454 fmt.i_x_offset = fmt.i_y_offset = 0;
455 fmt.i_chroma = p_vout->render.i_chroma;
456 fmt.i_aspect = p_vout->p_sys->i_aspect;
457 fmt.i_sar_num = p_vout->p_sys->i_aspect * fmt.i_height / fmt.i_width;
458 fmt.i_sar_den = VOUT_ASPECT_FACTOR;
460 p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
461 if( p_vout->p_sys->p_vout == NULL )
463 msg_Err( p_vout, "failed to create vout" );
464 dialog_Fatal( p_vout, _("Cropping failed"),
465 _("VLC could not open the video output module.") );
468 vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
470 p_vout->p_sys->b_changed = false;
471 p_vout->p_sys->i_lastchange = 0;
476 /*****************************************************************************
477 * Render: display previously rendered output
478 *****************************************************************************
479 * This function sends the currently rendered image to Crop image, waits
480 * until it is displayed and switches the two rendering buffers, preparing next
482 *****************************************************************************/
483 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
485 picture_t *p_outpic = NULL;
488 if( p_vout->p_sys->b_changed )
494 vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 )
497 if( !vlc_object_alive (p_vout) || p_vout->b_error )
499 vout_DestroyPicture( p_vout->p_sys->p_vout, p_outpic );
503 msleep( VOUT_OUTMEM_SLEEP );
506 p_outpic->date = p_pic->date;
507 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
509 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
511 uint8_t *p_in, *p_out, *p_out_end;
512 int i_in_pitch = p_pic->p[i_plane].i_pitch;
513 const int i_out_pitch = p_outpic->p[i_plane].i_pitch;
514 const int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
516 p_in = p_pic->p[i_plane].p_pixels
517 /* Skip the right amount of lines */
518 + i_in_pitch * ( p_pic->p[i_plane].i_visible_lines *
519 p_vout->p_sys->i_y / p_vout->output.i_height )
520 /* Skip the right amount of columns */
521 + i_in_pitch * p_vout->p_sys->i_x / p_vout->output.i_width;
523 p_out = p_outpic->p[i_plane].p_pixels;
524 p_out_end = p_out + i_out_pitch * p_outpic->p[i_plane].i_visible_lines;
526 while( p_out < p_out_end )
528 vlc_memcpy( p_out, p_in, i_copy_pitch );
530 p_out += i_out_pitch;
534 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
535 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
537 /* The source image may still be in the cache ... parse it! */
538 if( p_vout->p_sys->b_autocrop )
540 UpdateStats( p_vout, p_pic );
545 static bool NonBlackLine(uint8_t *p_in, int i_line, int i_pitch,
546 int i_visible_pitch, int i_lines,
547 int i_lumThreshold, int i_skipCountPercent,
548 int i_nonBlackPixel, int i_chroma)
550 const int i_col = i_line * i_pitch / i_lines;
551 int i_index, i_count = 0;
557 case VLC_FOURCC('I','4','4','4'):
558 case VLC_FOURCC('I','4','2','2'):
559 case VLC_FOURCC('I','4','2','0'):
560 case VLC_FOURCC('Y','V','1','2'):
561 case VLC_FOURCC('I','Y','U','V'):
562 case VLC_FOURCC('I','4','1','1'):
563 case VLC_FOURCC('I','4','1','0'):
564 case VLC_FOURCC('Y','V','U','9'):
565 case VLC_FOURCC('Y','U','V','A'):
566 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
567 for (i_index = i_col/2 + i_skipCount/2;
568 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
571 i_count += (p_in[i_index] > i_lumThreshold);
572 if (i_count > i_nonBlackPixel) break;
576 case VLC_FOURCC('R','G','B','2'): // packed by 1
577 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
578 for (i_index = i_col/2 + i_skipCount/2;
579 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
582 i_count += (p_in[i_index] > i_lumThreshold);
583 if (i_count > i_nonBlackPixel) break;
586 case VLC_FOURCC('R','V','1','5'): // packed by 2
587 case VLC_FOURCC('R','V','1','6'): // packed by 2
588 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
589 for (i_index = i_col/2 + i_skipCount/2 -
590 (i_col/2 + i_skipCount/2) % 2;
591 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
594 i_count += (p_in[i_index] > i_lumThreshold) &&
595 (p_in[i_index + 1] > i_lumThreshold);
596 if (i_count > i_nonBlackPixel) break;
599 case VLC_FOURCC('R','V','2','4'): // packed by 3
600 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
601 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)
603 i_count += (p_in[i_index] > i_lumThreshold) &&
604 (p_in[i_index + 1] > i_lumThreshold) &&
605 (p_in[i_index + 2] > i_lumThreshold);
606 if (i_count > i_nonBlackPixel) break;
609 case VLC_FOURCC('R','V','3','2'): // packed by 4
610 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
611 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)
613 i_count += (uint32_t)(*(p_in + i_index)) > (uint32_t)i_lumThreshold;
614 if (i_count > i_nonBlackPixel) break;
618 case VLC_FOURCC('Y','U','Y','2'): // packed by 2
619 case VLC_FOURCC('Y','U','N','V'): // packed by 2
620 case VLC_FOURCC('U','Y','V','Y'): // packed by 2
621 case VLC_FOURCC('U','Y','N','V'): // packed by 2
622 case VLC_FOURCC('Y','4','2','2'): // packed by 2
623 i_skipCount = (i_pitch * i_skipCountPercent) / 100;
624 for (i_index = (i_col/2 + i_skipCount/2) -
625 (i_col/2 + i_skipCount/2) % 2;
626 i_index <= i_visible_pitch/2 + i_col/2 - i_skipCount/2;
629 i_count += (p_in[i_index] > i_lumThreshold);
630 if (i_count > i_nonBlackPixel) break;
636 return (i_count > i_nonBlackPixel);
640 static void UpdateStats( vout_thread_t *p_vout, picture_t *p_pic )
642 uint8_t *p_in = p_pic->p[0].p_pixels;
643 int i_pitch = p_pic->p[0].i_pitch;
644 int i_visible_pitch = p_pic->p[0].i_visible_pitch;
645 int i_lines = p_pic->p[0].i_visible_lines;
646 int i_firstwhite = -1, i_lastwhite = -1, i;
648 int i_time = p_vout->p_sys->i_time;
649 int i_diff = p_vout->p_sys->i_diff;
651 if (!p_vout->p_sys->i_ratio)
653 /* Determine where black borders are */
654 for( i = 0 ; i < i_lines ; i++)
656 if (NonBlackLine(p_in, i, i_pitch, i_visible_pitch, i_lines,
657 p_vout->p_sys->i_threshold,
658 p_vout->p_sys->i_skipPercent,
659 p_vout->p_sys->i_nonBlackPixel,
660 p_vout->output.i_chroma))
663 i_lastwhite = i_lines - i;
669 /* Decide whether it's worth changing the size */
670 if( i_lastwhite == -1 )
672 p_vout->p_sys->i_lastchange = 0;
676 if( (i_lastwhite - i_firstwhite) < (int) (p_vout->p_sys->i_height / 2) )
678 p_vout->p_sys->i_lastchange = 0;
682 if (p_vout->output.i_aspect
683 * p_vout->output.i_height /
684 (i_lastwhite - i_firstwhite + 1)
685 * p_vout->p_sys->i_width /
686 p_vout->output.i_width >
687 p_vout->p_sys->i_ratio_max * 432)
689 int i_height = ((p_vout->output.i_aspect / 432) *
690 p_vout->output.i_height * p_vout->p_sys->i_width) /
691 (p_vout->output.i_width * p_vout->p_sys->i_ratio_max);
692 i_firstwhite = (p_vout->output.i_height - i_height) / 2;
693 i_lastwhite = p_vout->output.i_height - i_firstwhite;
695 p_vout->p_sys->i_lastchange = 0;
700 if( (i_lastwhite - i_firstwhite) <
701 (int) (p_vout->p_sys->i_height + i_diff)
702 && (i_lastwhite - i_firstwhite + i_diff) >
703 (int) p_vout->p_sys->i_height )
705 p_vout->p_sys->i_lastchange = 0;
709 /* We need at least 'i_time' images to make up our mind */
710 p_vout->p_sys->i_lastchange++;
711 if( p_vout->p_sys->i_lastchange < (unsigned int)i_time )
718 if ( p_vout->p_sys->i_lastchange >= (unsigned int)i_time )
720 p_vout->p_sys->i_aspect = p_vout->p_sys->i_ratio * 432;
721 int i_height = p_vout->output.i_aspect
722 * p_vout->output.i_height /
723 p_vout->p_sys->i_aspect
724 * p_vout->p_sys->i_width /
725 p_vout->output.i_width;
726 i_firstwhite = (p_vout->output.i_height - i_height) / 2;
727 i_lastwhite = p_vout->output.i_height - i_firstwhite;
736 /* Determine where black borders are */
737 switch( p_vout->output.i_chroma )
739 case VLC_FOURCC('I','4','2','0'):
740 /* XXX: Do not laugh ! I know this is very naive. But it's just a
741 * proof of concept code snippet... */
742 for( i = i_lines ; i-- ; )
744 const int i_col = i * i_pitch / i_lines;
746 if( p_in[i_col/2] > 40
747 && p_in[i_visible_pitch/2] > 40
748 && p_in[i_visible_pitch/2 + i_col/2] > 40 )
750 if( i_lastwhite == -1 )
764 /* Decide whether it's worth changing the size */
765 if( i_lastwhite == -1 )
767 p_vout->p_sys->i_lastchange = 0;
771 if( (unsigned int)(i_lastwhite - i_firstwhite)
772 < p_vout->p_sys->i_height / 2 )
774 p_vout->p_sys->i_lastchange = 0;
778 if( (unsigned int)(i_lastwhite - i_firstwhite)
779 < p_vout->p_sys->i_height + 16
780 && (unsigned int)(i_lastwhite - i_firstwhite + 16)
781 > p_vout->p_sys->i_height )
783 p_vout->p_sys->i_lastchange = 0;
787 /* We need at least 25 images to make up our mind */
788 p_vout->p_sys->i_lastchange++;
789 if( p_vout->p_sys->i_lastchange < 25 )
793 #endif //BEST_AUTOCROP
795 /* Tune a few values */
796 if( i_firstwhite & 1 )
801 if( !(i_lastwhite & 1) )
807 p_vout->p_sys->i_y = i_firstwhite;
808 p_vout->p_sys->i_height = i_lastwhite - i_firstwhite + 1;
810 // check p_vout->p_sys->i_height <= p_vout->output.i_height
811 if (p_vout->p_sys->i_height > p_vout->output.i_height)
812 p_vout->p_sys->i_height = p_vout->output.i_height;
815 p_vout->p_sys->i_aspect = p_vout->output.i_aspect
816 * p_vout->output.i_height / p_vout->p_sys->i_height
817 * p_vout->p_sys->i_width / p_vout->output.i_width;
819 p_vout->p_sys->b_changed = true;
823 * Forward mouse event with proper conversion.
825 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
826 vlc_value_t oldval, vlc_value_t newval, void *p_data )
828 vout_thread_t *p_vout = p_data;
829 VLC_UNUSED(p_this); VLC_UNUSED(oldval);
831 /* Translate the mouse coordinates
832 * FIXME missing lock */
833 if( !strcmp( psz_var, "mouse-x" ) )
834 newval.i_int += p_vout->p_sys->i_x;
835 else if( !strcmp( psz_var, "mouse-y" ) )
836 newval.i_int += p_vout->p_sys->i_y;
838 return var_Set( p_vout, psz_var, newval );
842 /*****************************************************************************
843 * FilterCallback: called when changing the ratio on the fly.
844 *****************************************************************************/
845 static int FilterCallback( vlc_object_t *p_this, char const *psz_var,
846 vlc_value_t oldval, vlc_value_t newval,
849 VLC_UNUSED(p_data); VLC_UNUSED(oldval);
850 vout_thread_t * p_vout = (vout_thread_t *)p_this;
852 if( !strcmp( psz_var, "ratio-crop" ) )
854 if ( !strcmp( newval.psz_string, "Auto" ) )
855 p_vout->p_sys->i_ratio = 0;
858 p_vout->p_sys->i_ratio = (unsigned int)atoi(newval.psz_string);
859 p_vout->p_sys->i_lastchange = p_vout->p_sys->i_time;
860 p_vout->p_sys->b_autocrop = true;
862 if (p_vout->p_sys->i_ratio)
864 if (p_vout->p_sys->i_ratio < (p_vout->output.i_width * 1000) /
865 p_vout->output.i_height)
866 p_vout->p_sys->i_ratio = (p_vout->output.i_width * 1000) /
867 p_vout->output.i_height;
868 if (p_vout->p_sys->i_ratio < p_vout->output.i_aspect / 432)
869 p_vout->p_sys->i_ratio = p_vout->output.i_aspect / 432;