git.sesse.net Git - vlc/blob - modules/video_filter/crop.c

   1 /*****************************************************************************
   2  * crop.c : Crop video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2002, 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          mod by Cedric Cocquebert <Cedric.Cocquebert@supelec.fr>
   9  *          based of DScaler idea (M. Samblanet)
  10  *
  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.
  15  *
  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.
  20  *
  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  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29
  30 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #include <vlc_common.h>
  35 #include <vlc_plugin.h>
  36 #include <vlc_vout.h>
  37 #include <vlc_dialog.h>
  38
  39 #include "filter_common.h"
  40
  41 #define BEST_AUTOCROP 1
  42 #ifdef BEST_AUTOCROP
  43     #define RATIO_MAX 15000  // 10*4/3 for a 360
  44 #endif
  45
  46 /*****************************************************************************
  47  * Local prototypes
  48  *****************************************************************************/
  49 static int  Create    ( vlc_object_t * );
  50 static void Destroy   ( vlc_object_t * );
  51
  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 * );
  56
  57 static void UpdateStats    ( vout_thread_t *, picture_t * );
  58
  59 static int  MouseEvent( vlc_object_t *, char const *,
  60                         vlc_value_t, vlc_value_t, void * );
  61
  62 #ifdef BEST_AUTOCROP
  63 /*****************************************************************************
  64  * Callback prototypes
  65  *****************************************************************************/
  66 static int FilterCallback ( vlc_object_t *, char const *,
  67                             vlc_value_t, vlc_value_t, void * );
  68 #endif
  69
  70 /*****************************************************************************
  71  * Module descriptor
  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>.")
  75
  76 #define AUTOCROP_TEXT N_("Automatic cropping")
  77 #define AUTOCROP_LONGTEXT N_("Automatically detect black borders and crop them.")
  78
  79 #ifdef BEST_AUTOCROP
  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.")
  82
  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.")
  85
  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.")
  88
  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.")
  91
  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.")
  95
  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.")
  98
  99 #define LUM_TEXT N_("Luminance threshold ")
 100 #define LUM_LONGTEXT N_("Maximum luminance to consider a pixel as black (0-255).")
 101 #endif
 102
 103 vlc_module_begin ()
 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 )
 109
 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 )
 114
 115 #ifdef BEST_AUTOCROP
 116     add_integer_with_range( "autocrop-ratio-max", 2405, 0, RATIO_MAX, NULL,
 117                             RATIOMAX_TEXT, RATIOMAX_LONGTEXT, true )
 118
 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 )
 125
 126     add_integer( "autocrop-non-black-pixels", 3, NULL,
 127                  NBP_TEXT, NBP_LONGTEXT, true )
 128
 129     add_integer_with_range( "autocrop-skip-percent", 17, 0, 100, NULL,
 130                             SKIP_TEXT, SKIP_LONGTEXT, true )
 131
 132     add_integer_with_range( "autocrop-luminance-threshold", 40, 0, 128, NULL,
 133                             LUM_TEXT, LUM_LONGTEXT, true )
 134 #endif //BEST_AUTOCROP
 135
 136     add_shortcut( "crop" )
 137     set_callbacks( Create, Destroy )
 138 vlc_module_end ()
 139
 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  *****************************************************************************/
 146 struct vout_sys_t
 147 {
 148     vout_thread_t *p_vout;
 149
 150     unsigned int i_x, i_y;
 151     unsigned int i_width, i_height, i_aspect;
 152
 153     bool b_autocrop;
 154
 155     /* Autocrop specific variables */
 156     unsigned int i_lastchange;
 157     bool   b_changed;
 158 #ifdef BEST_AUTOCROP
 159     unsigned int i_ratio_max;
 160     unsigned int i_threshold, i_skipPercent, i_nonBlackPixel, i_diff, i_time;
 161     unsigned int i_ratio;
 162 #endif
 163
 164 };
 165
 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 )
 170 {
 171     return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
 172 }
 173
 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 )
 180 {
 181     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 182
 183     /* Allocate structure */
 184     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 185     if( p_vout->p_sys == NULL )
 186         return VLC_ENOMEM;
 187
 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;
 194
 195     return VLC_SUCCESS;
 196 }
 197
 198 /*****************************************************************************
 199  * Init: initialize Crop video thread output method
 200  *****************************************************************************/
 201 static int Init( vout_thread_t *p_vout )
 202 {
 203     char *psz_var;
 204     video_format_t fmt;
 205
 206     I_OUTPUTPICTURES = 0;
 207     memset( &fmt, 0, sizeof(video_format_t) );
 208
 209     p_vout->p_sys->i_lastchange = 0;
 210     p_vout->p_sys->b_changed = false;
 211
 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;
 218
 219     /* Shall we use autocrop ? */
 220     p_vout->p_sys->b_autocrop = config_GetInt( p_vout, "autocrop" );
 221 #ifdef BEST_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" );
 231     vlc_value_t val={0};
 232     var_Get( p_vout, "ratio-crop", &val );
 233     val.psz_string = "0";
 234     var_SetString( p_vout, "ratio-crop", val.psz_string);
 235
 236     if (p_vout->p_sys->b_autocrop)
 237         p_vout->p_sys->i_ratio = 0;
 238     else
 239     {
 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;
 244     }
 245 #endif
 246
 247
 248     /* Get geometry value from the user */
 249     psz_var = config_GetPsz( p_vout, "crop-geometry" );
 250     if( psz_var )
 251     {
 252         char *psz_parser, *psz_tmp;
 253
 254         psz_parser = psz_tmp = psz_var;
 255         while( *psz_tmp && *psz_tmp != 'x' ) psz_tmp++;
 256
 257         if( *psz_tmp )
 258         {
 259             psz_tmp[0] = '\0';
 260             p_vout->p_sys->i_width = atoi( psz_parser );
 261
 262             psz_parser = ++psz_tmp;
 263             while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;
 264
 265             if( *psz_tmp )
 266             {
 267                 psz_tmp[0] = '\0';
 268                 p_vout->p_sys->i_height = atoi( psz_parser );
 269
 270                 psz_parser = ++psz_tmp;
 271                 while( *psz_tmp && *psz_tmp != '+' ) psz_tmp++;
 272
 273                 if( *psz_tmp )
 274                 {
 275                     psz_tmp[0] = '\0';
 276                     p_vout->p_sys->i_x = atoi( psz_parser );
 277                     p_vout->p_sys->i_y = atoi( ++psz_tmp );
 278                 }
 279                 else
 280                 {
 281                     p_vout->p_sys->i_x = atoi( psz_parser );
 282                     p_vout->p_sys->i_y =
 283                      ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
 284                 }
 285             }
 286             else
 287             {
 288                 p_vout->p_sys->i_height = atoi( psz_parser );
 289                 p_vout->p_sys->i_x =
 290                      ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
 291                 p_vout->p_sys->i_y =
 292                      ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
 293             }
 294         }
 295         else
 296         {
 297             p_vout->p_sys->i_width = atoi( psz_parser );
 298             p_vout->p_sys->i_height = p_vout->output.i_height;
 299             p_vout->p_sys->i_x =
 300                      ( p_vout->output.i_width - p_vout->p_sys->i_width ) / 2;
 301             p_vout->p_sys->i_y =
 302                      ( p_vout->output.i_height - p_vout->p_sys->i_height ) / 2;
 303         }
 304
 305         /* Check for validity */
 306         if( p_vout->p_sys->i_x + p_vout->p_sys->i_width
 307                                                    > p_vout->output.i_width )
 308         {
 309             p_vout->p_sys->i_x = 0;
 310             if( p_vout->p_sys->i_width > p_vout->output.i_width )
 311             {
 312                 p_vout->p_sys->i_width = p_vout->output.i_width;
 313             }
 314         }
 315
 316         if( p_vout->p_sys->i_y + p_vout->p_sys->i_height
 317                                                    > p_vout->output.i_height )
 318         {
 319             p_vout->p_sys->i_y = 0;
 320             if( p_vout->p_sys->i_height > p_vout->output.i_height )
 321             {
 322                 p_vout->p_sys->i_height = p_vout->output.i_height;
 323             }
 324         }
 325
 326         free( psz_var );
 327     }
 328     else
 329 #ifdef BEST_AUTOCROP
 330     if (p_vout->p_sys->i_ratio)
 331     {
 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;
 340     }
 341     else
 342 #endif
 343     {
 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;
 348     }
 349
 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;
 359
 360 #ifdef BEST_AUTOCROP
 361     msg_Info( p_vout, "ratio %d",  p_vout->p_sys->i_aspect / 432);
 362 #endif
 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;
 370
 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 )
 374     {
 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.") );
 378         return VLC_EGENERIC;
 379     }
 380
 381 #ifdef BEST_AUTOCROP
 382     var_AddCallback( p_vout, "ratio-crop", FilterCallback, NULL );
 383 #endif
 384
 385     vout_filter_AllocateDirectBuffers( p_vout, VOUT_MAX_PICTURES );
 386
 387     vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
 388
 389     return VLC_SUCCESS;
 390 }
 391
 392 /*****************************************************************************
 393  * End: terminate Crop video thread output method
 394  *****************************************************************************/
 395 static void End( vout_thread_t *p_vout )
 396 {
 397     vout_sys_t *p_sys = p_vout->p_sys;
 398
 399     if( p_sys->p_vout )
 400     {
 401         vout_filter_DelChild( p_vout, p_sys->p_vout, MouseEvent );
 402         vout_CloseAndRelease( p_sys->p_vout );
 403     }
 404
 405     vout_filter_ReleaseDirectBuffers( p_vout );
 406 }
 407
 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 )
 414 {
 415     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 416
 417     free( p_vout->p_sys );
 418 }
 419
 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 )
 427 {
 428     video_format_t fmt;
 429
 430     if( !p_vout->p_sys->b_changed )
 431     {
 432         return VLC_SUCCESS;
 433     }
 434
 435     memset( &fmt, 0, sizeof(video_format_t) );
 436
 437 #ifdef BEST_AUTOCROP
 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 " );
 442
 443     msg_Info( p_vout, "ratio %d",  p_vout->p_sys->i_aspect / 432);
 444 #endif
 445
 446     if( p_vout->p_sys->p_vout )
 447     {
 448         vout_filter_DelChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
 449         vout_CloseAndRelease( p_vout->p_sys->p_vout );
 450     }
 451
 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;
 459
 460     p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
 461     if( p_vout->p_sys->p_vout == NULL )
 462     {
 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.") );
 466         return VLC_EGENERIC;
 467     }
 468     vout_filter_AddChild( p_vout, p_vout->p_sys->p_vout, MouseEvent );
 469
 470     p_vout->p_sys->b_changed = false;
 471     p_vout->p_sys->i_lastchange = 0;
 472
 473     return VLC_SUCCESS;
 474 }
 475
 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
 481  * frame.
 482  *****************************************************************************/
 483 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 484 {
 485     picture_t *p_outpic = NULL;
 486     int i_plane;
 487
 488     if( p_vout->p_sys->b_changed )
 489     {
 490         return;
 491     }
 492
 493     while( ( p_outpic =
 494                  vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 )
 495            ) == NULL )
 496     {
 497         if( !vlc_object_alive (p_vout) || p_vout->b_error )
 498         {
 499             vout_DestroyPicture( p_vout->p_sys->p_vout, p_outpic );
 500             return;
 501         }
 502
 503         msleep( VOUT_OUTMEM_SLEEP );
 504     }
 505
 506     p_outpic->date = p_pic->date;
 507     vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
 508
 509     for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 510     {
 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;
 515
 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;
 522
 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;
 525
 526         while( p_out < p_out_end )
 527         {
 528             vlc_memcpy( p_out, p_in, i_copy_pitch );
 529             p_in += i_in_pitch;
 530             p_out += i_out_pitch;
 531         }
 532     }
 533
 534     vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
 535     vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
 536
 537     /* The source image may still be in the cache ... parse it! */
 538     if( p_vout->p_sys->b_autocrop )
 539     {
 540         UpdateStats( p_vout, p_pic );
 541     }
 542 }
 543
 544 #ifdef BEST_AUTOCROP
 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)
 549 {
 550     const int i_col = i_line * i_pitch / i_lines;
 551     int i_index, i_count = 0;
 552     int i_skipCount = 0;
 553
 554     switch(i_chroma)
 555     {
 556     // planar YUV
 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;
 569                  i_index++)
 570             {
 571                  i_count += (p_in[i_index] > i_lumThreshold);
 572             if (i_count > i_nonBlackPixel) break;
 573             }
 574             break;
 575     // packed RGB
 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;
 580                  i_index++)
 581             {
 582                  i_count += (p_in[i_index] > i_lumThreshold);
 583             if (i_count > i_nonBlackPixel) break;
 584             }
 585             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;
 592                  i_index+=2)
 593             {
 594                  i_count += (p_in[i_index] > i_lumThreshold) &&
 595                             (p_in[i_index + 1] > i_lumThreshold);
 596             if (i_count > i_nonBlackPixel) break;
 597             }
 598             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)
 602             {
 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;
 607             }
 608             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)
 612             {
 613                  i_count += (uint32_t)(*(p_in + i_index)) > (uint32_t)i_lumThreshold;
 614             if (i_count > i_nonBlackPixel) break;
 615             }
 616             break;
 617     // packed YUV
 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;
 627                  i_index+=2)
 628             {
 629                  i_count += (p_in[i_index] > i_lumThreshold);
 630             if (i_count > i_nonBlackPixel) break;
 631             }
 632             break;
 633         default :
 634             break;
 635     }
 636     return (i_count > i_nonBlackPixel);
 637 }
 638 #endif
 639
 640 static void UpdateStats( vout_thread_t *p_vout, picture_t *p_pic )
 641 {
 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;
 647 #ifdef BEST_AUTOCROP
 648     int i_time = p_vout->p_sys->i_time;
 649     int i_diff = p_vout->p_sys->i_diff;
 650
 651     if (!p_vout->p_sys->i_ratio)
 652     {
 653         /* Determine where black borders are */
 654         for( i = 0 ; i < i_lines ; i++)
 655         {
 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))
 661                 {
 662                     i_firstwhite = i;
 663                     i_lastwhite = i_lines - i;
 664                     break;
 665                 }
 666                 p_in += i_pitch;
 667         }
 668
 669         /* Decide whether it's worth changing the size */
 670         if( i_lastwhite == -1 )
 671         {
 672             p_vout->p_sys->i_lastchange = 0;
 673             return;
 674         }
 675
 676         if( (i_lastwhite - i_firstwhite) < (int) (p_vout->p_sys->i_height / 2) )
 677         {
 678             p_vout->p_sys->i_lastchange = 0;
 679             return;
 680         }
 681
 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)
 688         {
 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;
 694 /*
 695             p_vout->p_sys->i_lastchange = 0;
 696             return;
 697 */
 698         }
 699
 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 )
 704         {
 705             p_vout->p_sys->i_lastchange = 0;
 706             return;
 707         }
 708
 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 )
 712         {
 713             return;
 714         }
 715     }
 716     else
 717     {
 718         if ( p_vout->p_sys->i_lastchange >= (unsigned int)i_time )
 719         {
 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;
 728         }
 729         else
 730         {
 731             return;
 732         }
 733     }
 734
 735 #else
 736     /* Determine where black borders are */
 737     switch( p_vout->output.i_chroma )
 738     {
 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-- ; )
 743         {
 744             const int i_col = i * i_pitch / i_lines;
 745
 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 )
 749             {
 750                 if( i_lastwhite == -1 )
 751                 {
 752                     i_lastwhite = i;
 753                 }
 754                 i_firstwhite = i;
 755             }
 756             p_in += i_pitch;
 757         }
 758         break;
 759
 760     default:
 761         break;
 762     }
 763
 764     /* Decide whether it's worth changing the size */
 765     if( i_lastwhite == -1 )
 766     {
 767         p_vout->p_sys->i_lastchange = 0;
 768         return;
 769     }
 770
 771     if( (unsigned int)(i_lastwhite - i_firstwhite)
 772                                            < p_vout->p_sys->i_height / 2 )
 773     {
 774         p_vout->p_sys->i_lastchange = 0;
 775         return;
 776     }
 777
 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 )
 782     {
 783         p_vout->p_sys->i_lastchange = 0;
 784         return;
 785     }
 786
 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 )
 790     {
 791         return;
 792     }
 793 #endif //BEST_AUTOCROP
 794
 795     /* Tune a few values */
 796     if( i_firstwhite & 1 )
 797     {
 798         i_firstwhite--;
 799     }
 800
 801     if( !(i_lastwhite & 1) )
 802     {
 803         i_lastwhite++;
 804     }
 805
 806     /* Change size */
 807     p_vout->p_sys->i_y = i_firstwhite;
 808     p_vout->p_sys->i_height = i_lastwhite - i_firstwhite + 1;
 809 #ifdef BEST_AUTOCROP
 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;
 813 #endif
 814
 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;
 818
 819     p_vout->p_sys->b_changed = true;
 820 }
 821
 822 /**
 823  * Forward mouse event with proper conversion.
 824  */
 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 )
 827 {
 828     vout_thread_t *p_vout = p_data;
 829     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
 830
 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;
 837
 838     return var_Set( p_vout, psz_var, newval );
 839 }
 840
 841 #ifdef BEST_AUTOCROP
 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,
 847                            void *p_data )
 848 {
 849     VLC_UNUSED(p_data); VLC_UNUSED(oldval);
 850     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 851
 852     if( !strcmp( psz_var, "ratio-crop" ) )
 853     {
 854         if ( !strcmp( newval.psz_string, "Auto" ) )
 855             p_vout->p_sys->i_ratio = 0;
 856         else
 857         {
 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;
 861         }
 862         if (p_vout->p_sys->i_ratio)
 863         {
 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;
 870         }
 871      }
 872     return VLC_SUCCESS;
 873 }
 874 #endif