git.sesse.net Git - vlc/blob - modules/video_chroma/i420_rgb.c

   1 /*****************************************************************************
   2  * i420_rgb.c : YUV to bitmap RGB conversion module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2001, 2004, 2008 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Sam Hocevar <sam@zoy.org>
   8  *          Damien Fouilleul <damienf@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <math.h>                                            /* exp(), pow() */
  34
  35 #include <vlc_common.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_filter.h>
  38 #include <vlc_vout.h>
  39
  40 #include "i420_rgb.h"
  41 #if defined (MODULE_NAME_IS_i420_rgb)
  42 #   include "i420_rgb_c.h"
  43 #endif
  44
  45 /*****************************************************************************
  46  * RGB2PIXEL: assemble RGB components to a pixel value, returns a uint32_t
  47  *****************************************************************************/
  48 #define RGB2PIXEL( p_filter, i_r, i_g, i_b )                 \
  49     (((((uint32_t)i_r) >> p_filter->fmt_out.video.i_rrshift) \
  50                        << p_filter->fmt_out.video.i_lrshift) \
  51    | ((((uint32_t)i_g) >> p_filter->fmt_out.video.i_rgshift) \
  52                        << p_filter->fmt_out.video.i_lgshift) \
  53    | ((((uint32_t)i_b) >> p_filter->fmt_out.video.i_rbshift) \
  54                        << p_filter->fmt_out.video.i_lbshift))
  55
  56 /*****************************************************************************
  57  * Local and extern prototypes.
  58  *****************************************************************************/
  59 static int  Activate   ( vlc_object_t * );
  60 static void Deactivate ( vlc_object_t * );
  61
  62 #if defined (MODULE_NAME_IS_i420_rgb)
  63 static void SetGammaTable       ( int *pi_table, double f_gamma );
  64 static void SetYUV              ( filter_t * );
  65 static void Set8bppPalette      ( filter_t *, uint8_t * );
  66 #endif
  67
  68 /*****************************************************************************
  69  * Module descriptor.
  70  *****************************************************************************/
  71 vlc_module_begin();
  72 #if defined (MODULE_NAME_IS_i420_rgb)
  73     set_description( N_("I420,IYUV,YV12 to "
  74                        "RGB2,RV15,RV16,RV24,RV32 conversions") );
  75     set_capability( "video filter2", 80 );
  76 #elif defined (MODULE_NAME_IS_i420_rgb_mmx)
  77     set_description( N_( "MMX I420,IYUV,YV12 to "
  78                         "RV15,RV16,RV24,RV32 conversions") );
  79     set_capability( "video filter2", 100 );
  80     add_requirement( MMX );
  81 #elif defined (MODULE_NAME_IS_i420_rgb_sse2)
  82     set_description( N_( "SSE2 I420,IYUV,YV12 to "
  83                         "RV15,RV16,RV24,RV32 conversions") );
  84     set_capability( "video filter2", 120 );
  85     add_requirement( SSE2 );
  86 #endif
  87     set_callbacks( Activate, Deactivate );
  88 vlc_module_end();
  89
  90 /*****************************************************************************
  91  * Activate: allocate a chroma function
  92  *****************************************************************************
  93  * This function allocates and initializes a chroma function
  94  *****************************************************************************/
  95 static int Activate( vlc_object_t *p_this )
  96 {
  97     filter_t *p_filter = (filter_t *)p_this;
  98 #if defined (MODULE_NAME_IS_i420_rgb)
  99     size_t i_tables_size;
 100 #endif
 101
 102     if( p_filter->fmt_out.video.i_width & 1
 103      || p_filter->fmt_out.video.i_height & 1 )
 104     {
 105         return VLC_EGENERIC;
 106     }
 107
 108     switch( p_filter->fmt_in.video.i_chroma )
 109     {
 110         case VLC_FOURCC('Y','V','1','2'):
 111         case VLC_FOURCC('I','4','2','0'):
 112         case VLC_FOURCC('I','Y','U','V'):
 113             switch( p_filter->fmt_out.video.i_chroma )
 114             {
 115 #if defined (MODULE_NAME_IS_i420_rgb)
 116                 case VLC_FOURCC('R','G','B','2'):
 117                     p_filter->pf_video_filter = I420_RGB8_Filter;
 118                     break;
 119 #endif
 120                 case VLC_FOURCC('R','V','1','5'):
 121                 case VLC_FOURCC('R','V','1','6'):
 122 #if ! defined (MODULE_NAME_IS_i420_rgb)
 123                     /* If we don't have support for the bitmasks, bail out */
 124                     if( ( p_filter->fmt_out.video.i_rmask == 0x7c00
 125                        && p_filter->fmt_out.video.i_gmask == 0x03e0
 126                        && p_filter->fmt_out.video.i_bmask == 0x001f ) )
 127                     {
 128                         /* R5G5B6 pixel format */
 129                         msg_Dbg(p_this, "RGB pixel format is R5G5B5");
 130                         p_filter->pf_video_filter = I420_R5G5B5_Filter;
 131                     }
 132                     else if( ( p_filter->fmt_out.video.i_rmask == 0xf800
 133                             && p_filter->fmt_out.video.i_gmask == 0x07e0
 134                             && p_filter->fmt_out.video.i_bmask == 0x001f ) )
 135                     {
 136                         /* R5G6B5 pixel format */
 137                         msg_Dbg(p_this, "RGB pixel format is R5G6B5");
 138                         p_filter->pf_video_filter = I420_R5G6B5_Filter;
 139                     }
 140                     else
 141                         return VLC_EGENERIC;
 142 #else
 143                     // generic C chroma converter */
 144                     p_filter->pf_video_filter = I420_RGB16_Filter;
 145 #endif
 146                     break;
 147
 148 #if 0
 149                 /* Hmmm, is there only X11 using 32bits per pixel for RV24 ? */
 150                 case VLC_FOURCC('R','V','2','4'):
 151 #endif
 152
 153                 case VLC_FOURCC('R','V','3','2'):
 154 #if ! defined (MODULE_NAME_IS_i420_rgb)
 155                     /* If we don't have support for the bitmasks, bail out */
 156                     if( p_filter->fmt_out.video.i_rmask == 0x00ff0000
 157                      && p_filter->fmt_out.video.i_gmask == 0x0000ff00
 158                      && p_filter->fmt_out.video.i_bmask == 0x000000ff )
 159                     {
 160                         /* A8R8G8B8 pixel format */
 161                         msg_Dbg(p_this, "RGB pixel format is A8R8G8B8");
 162                         p_filter->pf_video_filter = I420_A8R8G8B8_Filter;
 163                     }
 164                     else if( p_filter->fmt_out.video.i_rmask == 0xff000000
 165                           && p_filter->fmt_out.video.i_gmask == 0x00ff0000
 166                           && p_filter->fmt_out.video.i_bmask == 0x0000ff00 )
 167                     {
 168                         /* R8G8B8A8 pixel format */
 169                         msg_Dbg(p_this, "RGB pixel format is R8G8B8A8");
 170                         p_filter->pf_video_filter = I420_R8G8B8A8_Filter;
 171                     }
 172                     else if( p_filter->fmt_out.video.i_rmask == 0x0000ff00
 173                           && p_filter->fmt_out.video.i_gmask == 0x00ff0000
 174                           && p_filter->fmt_out.video.i_bmask == 0xff000000 )
 175                     {
 176                         /* B8G8R8A8 pixel format */
 177                         msg_Dbg(p_this, "RGB pixel format is B8G8R8A8");
 178                         p_filter->pf_video_filter = I420_B8G8R8A8_Filter;
 179                     }
 180                     else if( p_filter->fmt_out.video.i_rmask == 0x000000ff
 181                           && p_filter->fmt_out.video.i_gmask == 0x0000ff00
 182                           && p_filter->fmt_out.video.i_bmask == 0x00ff0000 )
 183                     {
 184                         /* A8B8G8R8 pixel format */
 185                         msg_Dbg(p_this, "RGB pixel format is A8B8G8R8");
 186                         p_filter->pf_video_filter = I420_A8B8G8R8_Filter;
 187                     }
 188                     else
 189                         return VLC_EGENERIC;
 190 #else
 191                     /* generic C chroma converter */
 192                     p_filter->pf_video_filter = I420_RGB32_Filter;
 193 #endif
 194                     break;
 195
 196                 default:
 197                     return VLC_EGENERIC;
 198             }
 199             break;
 200
 201         default:
 202             return VLC_EGENERIC;
 203     }
 204
 205     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 206     if( p_filter->p_sys == NULL )
 207     {
 208         return VLC_EGENERIC;
 209     }
 210
 211     switch( p_filter->fmt_out.video.i_chroma )
 212     {
 213 #if defined (MODULE_NAME_IS_i420_rgb)
 214         case VLC_FOURCC('R','G','B','2'):
 215             p_filter->p_sys->p_buffer = malloc( VOUT_MAX_WIDTH );
 216             break;
 217 #endif
 218
 219         case VLC_FOURCC('R','V','1','5'):
 220         case VLC_FOURCC('R','V','1','6'):
 221             p_filter->p_sys->p_buffer = malloc( VOUT_MAX_WIDTH * 2 );
 222             break;
 223
 224         case VLC_FOURCC('R','V','2','4'):
 225         case VLC_FOURCC('R','V','3','2'):
 226             p_filter->p_sys->p_buffer = malloc( VOUT_MAX_WIDTH * 4 );
 227             break;
 228
 229         default:
 230             p_filter->p_sys->p_buffer = NULL;
 231             break;
 232     }
 233
 234     if( p_filter->p_sys->p_buffer == NULL )
 235     {
 236         free( p_filter->p_sys );
 237         return VLC_EGENERIC;
 238     }
 239
 240     p_filter->p_sys->p_offset = malloc( p_filter->fmt_out.video.i_width
 241                     * ( ( p_filter->fmt_out.video.i_chroma
 242                            == VLC_FOURCC('R','G','B','2') ) ? 2 : 1 )
 243                     * sizeof( int ) );
 244     if( p_filter->p_sys->p_offset == NULL )
 245     {
 246         free( p_filter->p_sys->p_buffer );
 247         free( p_filter->p_sys );
 248         return VLC_EGENERIC;
 249     }
 250
 251 #if defined (MODULE_NAME_IS_i420_rgb)
 252     switch( p_filter->fmt_out.video.i_chroma )
 253     {
 254     case VLC_FOURCC('R','G','B','2'):
 255         i_tables_size = sizeof( uint8_t ) * PALETTE_TABLE_SIZE;
 256         break;
 257     case VLC_FOURCC('R','V','1','5'):
 258     case VLC_FOURCC('R','V','1','6'):
 259         i_tables_size = sizeof( uint16_t ) * RGB_TABLE_SIZE;
 260         break;
 261     default: /* RV24, RV32 */
 262         i_tables_size = sizeof( uint32_t ) * RGB_TABLE_SIZE;
 263         break;
 264     }
 265
 266     p_filter->p_sys->p_base = malloc( i_tables_size );
 267     if( p_filter->p_sys->p_base == NULL )
 268     {
 269         free( p_filter->p_sys->p_offset );
 270         free( p_filter->p_sys->p_buffer );
 271         free( p_filter->p_sys );
 272         return -1;
 273     }
 274
 275     SetYUV( p_filter );
 276 #endif
 277
 278     return 0;
 279 }
 280
 281 /*****************************************************************************
 282  * Deactivate: free the chroma function
 283  *****************************************************************************
 284  * This function frees the previously allocated chroma function
 285  *****************************************************************************/
 286 static void Deactivate( vlc_object_t *p_this )
 287 {
 288     filter_t *p_filter = (filter_t *)p_this;
 289
 290 #if defined (MODULE_NAME_IS_i420_rgb)
 291     free( p_filter->p_sys->p_base );
 292 #endif
 293     free( p_filter->p_sys->p_offset );
 294     free( p_filter->p_sys->p_buffer );
 295     free( p_filter->p_sys );
 296 }
 297
 298 #if defined (MODULE_NAME_IS_i420_rgb)
 299 VIDEO_FILTER_WRAPPER( I420_RGB8 )
 300 VIDEO_FILTER_WRAPPER( I420_RGB16 )
 301 VIDEO_FILTER_WRAPPER( I420_RGB32 )
 302 #else
 303 VIDEO_FILTER_WRAPPER( I420_R5G5B5 )
 304 VIDEO_FILTER_WRAPPER( I420_R5G6B5 )
 305 VIDEO_FILTER_WRAPPER( I420_A8R8G8B8 )
 306 VIDEO_FILTER_WRAPPER( I420_R8G8B8A8 )
 307 VIDEO_FILTER_WRAPPER( I420_B8G8R8A8 )
 308 VIDEO_FILTER_WRAPPER( I420_A8B8G8R8 )
 309 #endif
 310
 311 #if defined (MODULE_NAME_IS_i420_rgb)
 312 /*****************************************************************************
 313  * SetGammaTable: return intensity table transformed by gamma curve.
 314  *****************************************************************************
 315  * pi_table is a table of 256 entries from 0 to 255.
 316  *****************************************************************************/
 317 static void SetGammaTable( int *pi_table, double f_gamma )
 318 {
 319     int i_y;                                               /* base intensity */
 320
 321     /* Use exp(gamma) instead of gamma */
 322     f_gamma = exp( f_gamma );
 323
 324     /* Build gamma table */
 325     for( i_y = 0; i_y < 256; i_y++ )
 326     {
 327         pi_table[ i_y ] = (int)( pow( (double)i_y / 256, f_gamma ) * 256 );
 328     }
 329 }
 330
 331 /*****************************************************************************
 332  * SetYUV: compute tables and set function pointers
 333  *****************************************************************************/
 334 static void SetYUV( filter_t *p_filter )
 335 {
 336     int          pi_gamma[256];                               /* gamma table */
 337     volatile int i_index;                                 /* index in tables */
 338                    /* We use volatile here to work around a strange gcc-3.3.4
 339                     * optimization bug */
 340
 341     /* Build gamma table */
 342     SetGammaTable( pi_gamma, 0 ); //p_filter/*FIXME wasn't used anywhere anyway*/->f_gamma );
 343
 344     /*
 345      * Set pointers and build YUV tables
 346      */
 347
 348     /* Color: build red, green and blue tables */
 349     switch( p_filter->fmt_out.video.i_chroma )
 350     {
 351     case VLC_FOURCC('R','G','B','2'):
 352         p_filter->p_sys->p_rgb8 = (uint8_t *)p_filter->p_sys->p_base;
 353         Set8bppPalette( p_filter, p_filter->p_sys->p_rgb8 );
 354         break;
 355
 356     case VLC_FOURCC('R','V','1','5'):
 357     case VLC_FOURCC('R','V','1','6'):
 358         p_filter->p_sys->p_rgb16 = (uint16_t *)p_filter->p_sys->p_base;
 359         for( i_index = 0; i_index < RED_MARGIN; i_index++ )
 360         {
 361             p_filter->p_sys->p_rgb16[RED_OFFSET - RED_MARGIN + i_index] = RGB2PIXEL( p_filter, pi_gamma[0], 0, 0 );
 362             p_filter->p_sys->p_rgb16[RED_OFFSET + 256 + i_index] =        RGB2PIXEL( p_filter, pi_gamma[255], 0, 0 );
 363         }
 364         for( i_index = 0; i_index < GREEN_MARGIN; i_index++ )
 365         {
 366             p_filter->p_sys->p_rgb16[GREEN_OFFSET - GREEN_MARGIN + i_index] = RGB2PIXEL( p_filter, 0, pi_gamma[0], 0 );
 367             p_filter->p_sys->p_rgb16[GREEN_OFFSET + 256 + i_index] =          RGB2PIXEL( p_filter, 0, pi_gamma[255], 0 );
 368         }
 369         for( i_index = 0; i_index < BLUE_MARGIN; i_index++ )
 370         {
 371             p_filter->p_sys->p_rgb16[BLUE_OFFSET - BLUE_MARGIN + i_index] = RGB2PIXEL( p_filter, 0, 0, pi_gamma[0] );
 372             p_filter->p_sys->p_rgb16[BLUE_OFFSET + BLUE_MARGIN + i_index] = RGB2PIXEL( p_filter, 0, 0, pi_gamma[255] );
 373         }
 374         for( i_index = 0; i_index < 256; i_index++ )
 375         {
 376             p_filter->p_sys->p_rgb16[RED_OFFSET + i_index] =   RGB2PIXEL( p_filter, pi_gamma[ i_index ], 0, 0 );
 377             p_filter->p_sys->p_rgb16[GREEN_OFFSET + i_index] = RGB2PIXEL( p_filter, 0, pi_gamma[ i_index ], 0 );
 378             p_filter->p_sys->p_rgb16[BLUE_OFFSET + i_index] =  RGB2PIXEL( p_filter, 0, 0, pi_gamma[ i_index ] );
 379         }
 380         break;
 381
 382     case VLC_FOURCC('R','V','2','4'):
 383     case VLC_FOURCC('R','V','3','2'):
 384         p_filter->p_sys->p_rgb32 = (uint32_t *)p_filter->p_sys->p_base;
 385         for( i_index = 0; i_index < RED_MARGIN; i_index++ )
 386         {
 387             p_filter->p_sys->p_rgb32[RED_OFFSET - RED_MARGIN + i_index] = RGB2PIXEL( p_filter, pi_gamma[0], 0, 0 );
 388             p_filter->p_sys->p_rgb32[RED_OFFSET + 256 + i_index] =        RGB2PIXEL( p_filter, pi_gamma[255], 0, 0 );
 389         }
 390         for( i_index = 0; i_index < GREEN_MARGIN; i_index++ )
 391         {
 392             p_filter->p_sys->p_rgb32[GREEN_OFFSET - GREEN_MARGIN + i_index] = RGB2PIXEL( p_filter, 0, pi_gamma[0], 0 );
 393             p_filter->p_sys->p_rgb32[GREEN_OFFSET + 256 + i_index] =          RGB2PIXEL( p_filter, 0, pi_gamma[255], 0 );
 394         }
 395         for( i_index = 0; i_index < BLUE_MARGIN; i_index++ )
 396         {
 397             p_filter->p_sys->p_rgb32[BLUE_OFFSET - BLUE_MARGIN + i_index] = RGB2PIXEL( p_filter, 0, 0, pi_gamma[0] );
 398             p_filter->p_sys->p_rgb32[BLUE_OFFSET + BLUE_MARGIN + i_index] = RGB2PIXEL( p_filter, 0, 0, pi_gamma[255] );
 399         }
 400         for( i_index = 0; i_index < 256; i_index++ )
 401         {
 402             p_filter->p_sys->p_rgb32[RED_OFFSET + i_index] =   RGB2PIXEL( p_filter, pi_gamma[ i_index ], 0, 0 );
 403             p_filter->p_sys->p_rgb32[GREEN_OFFSET + i_index] = RGB2PIXEL( p_filter, 0, pi_gamma[ i_index ], 0 );
 404             p_filter->p_sys->p_rgb32[BLUE_OFFSET + i_index] =  RGB2PIXEL( p_filter, 0, 0, pi_gamma[ i_index ] );
 405         }
 406         break;
 407     }
 408 }
 409
 410 static void Set8bppPalette( filter_t *p_filter, uint8_t *p_rgb8 )
 411 {
 412     #define CLIP( x ) ( ((x < 0) ? 0 : (x > 255) ? 255 : x) << 8 )
 413
 414     int y,u,v;
 415     int r,g,b;
 416     int i = 0, j = 0;
 417     uint16_t *p_cmap_r = p_filter->p_sys->p_rgb_r;
 418     uint16_t *p_cmap_g = p_filter->p_sys->p_rgb_g;
 419     uint16_t *p_cmap_b = p_filter->p_sys->p_rgb_b;
 420
 421     unsigned char p_lookup[PALETTE_TABLE_SIZE];
 422
 423     /* This loop calculates the intersection of an YUV box and the RGB cube. */
 424     for ( y = 0; y <= 256; y += 16, i += 128 - 81 )
 425     {
 426         for ( u = 0; u <= 256; u += 32 )
 427         {
 428             for ( v = 0; v <= 256; v += 32 )
 429             {
 430                 r = y + ( (V_RED_COEF*(v-128)) >> SHIFT );
 431                 g = y + ( (U_GREEN_COEF*(u-128)
 432                          + V_GREEN_COEF*(v-128)) >> SHIFT );
 433                 b = y + ( (U_BLUE_COEF*(u-128)) >> SHIFT );
 434
 435                 if( r >= 0x00 && g >= 0x00 && b >= 0x00
 436                         && r <= 0xff && g <= 0xff && b <= 0xff )
 437                 {
 438                     /* This one should never happen unless someone
 439                      * fscked up my code */
 440                     if( j == 256 )
 441                     {
 442                         msg_Err( p_filter, "no colors left in palette" );
 443                         break;
 444                     }
 445
 446                     /* Clip the colors */
 447                     p_cmap_r[ j ] = CLIP( r );
 448                     p_cmap_g[ j ] = CLIP( g );
 449                     p_cmap_b[ j ] = CLIP( b );
 450
 451 #if 0
 452             printf("+++Alloc RGB cmap %d (%d, %d, %d)\n", j,
 453                p_cmap_r[ j ] >>8, p_cmap_g[ j ] >>8,
 454                p_cmap_b[ j ] >>8);
 455 #endif
 456
 457                     /* Allocate color */
 458                     p_lookup[ i ] = 1;
 459                     p_rgb8[ i++ ] = j;
 460                     j++;
 461                 }
 462                 else
 463                 {
 464                     p_lookup[ i ] = 0;
 465                     p_rgb8[ i++ ] = 0;
 466                 }
 467             }
 468         }
 469     }
 470
 471     /* The colors have been allocated, we can set the palette */
 472     /* FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME
 473     p_filter->fmt_out.video.pf_setpalette( p_filter, p_cmap_r, p_cmap_g, p_cmap_b );*/
 474
 475 #if 0
 476     /* There will eventually be a way to know which colors
 477      * couldn't be allocated and try to find a replacement */
 478     p_vout->i_white_pixel = 0xff;
 479     p_vout->i_black_pixel = 0x00;
 480     p_vout->i_gray_pixel = 0x44;
 481     p_vout->i_blue_pixel = 0x3b;
 482 #endif
 483
 484     /* This loop allocates colors that got outside the RGB cube */
 485     for ( i = 0, y = 0; y <= 256; y += 16, i += 128 - 81 )
 486     {
 487         for ( u = 0; u <= 256; u += 32 )
 488         {
 489             for ( v = 0; v <= 256; v += 32, i++ )
 490             {
 491                 int u2, v2, dist, mindist = 100000000;
 492
 493                 if( p_lookup[ i ] || y == 0 )
 494                 {
 495                     continue;
 496                 }
 497
 498                 /* Heavy. yeah. */
 499                 for( u2 = 0; u2 <= 256; u2 += 32 )
 500                 {
 501                     for( v2 = 0; v2 <= 256; v2 += 32 )
 502                     {
 503                         j = ((y>>4)<<7) + (u2>>5)*9 + (v2>>5);
 504                         dist = (u-u2)*(u-u2) + (v-v2)*(v-v2);
 505
 506                         /* Find the nearest color */
 507                         if( p_lookup[ j ] && dist < mindist )
 508                         {
 509                             p_rgb8[ i ] = p_rgb8[ j ];
 510                             mindist = dist;
 511                         }
 512
 513                         j -= 128;
 514
 515                         /* Find the nearest color */
 516                         if( p_lookup[ j ] && dist + 128 < mindist )
 517                         {
 518                             p_rgb8[ i ] = p_rgb8[ j ];
 519                             mindist = dist + 128;
 520                         }
 521                     }
 522                 }
 523             }
 524         }
 525     }
 526 }
 527
 528 #endif
 529