git.sesse.net Git - vlc/blob - modules/codec/spudec/parse.c

   1 /*****************************************************************************
   2  * parse.c: SPU parser
   3  *****************************************************************************
   4  * Copyright (C) 2000-2001 VideoLAN
   5  * $Id: parse.c,v 1.1 2002/08/16 03:07:56 sam Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28 #include <string.h>                                    /* memcpy(), memset() */
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/vout.h>
  32 #include <vlc/decoder.h>
  33
  34 #ifdef HAVE_UNISTD_H
  35 #   include <unistd.h>                                           /* getpid() */
  36 #endif
  37
  38 #ifdef WIN32                   /* getpid() for win32 is located in process.h */
  39 #   include <process.h>
  40 #endif
  41
  42 #include "spudec.h"
  43
  44 /*****************************************************************************
  45  * Local prototypes.
  46  *****************************************************************************/
  47 static int  ParseControlSequences( spudec_thread_t *, subpicture_t * );
  48 static int  ParseRLE             ( spudec_thread_t *, subpicture_t *, u8 * );
  49
  50 /*****************************************************************************
  51  * AddNibble: read a nibble from a source packet and add it to our integer.
  52  *****************************************************************************/
  53 static inline unsigned int AddNibble( unsigned int i_code,
  54                                       u8 *p_src, int *pi_index )
  55 {
  56     if( *pi_index & 0x1 )
  57     {
  58         return( i_code << 4 | ( p_src[(*pi_index)++ >> 1] & 0xf ) );
  59     }
  60     else
  61     {
  62         return( i_code << 4 | p_src[(*pi_index)++ >> 1] >> 4 );
  63     }
  64 }
  65
  66 /*****************************************************************************
  67  * SyncPacket: get in sync with the stream
  68  *****************************************************************************
  69  * This function makes a few sanity checks and returns 0 if it looks like we
  70  * are at the beginning of a subpicture packet.
  71  *****************************************************************************/
  72 int E_(SyncPacket)( spudec_thread_t *p_spudec )
  73 {
  74     /* Re-align the buffer on an 8-bit boundary */
  75     RealignBits( &p_spudec->bit_stream );
  76
  77     /* The total SPU packet size, often bigger than a PS packet */
  78     p_spudec->i_spu_size = GetBits( &p_spudec->bit_stream, 16 );
  79
  80     /* The RLE stuff size (remove 4 because we just read 32 bits) */
  81     p_spudec->i_rle_size = ShowBits( &p_spudec->bit_stream, 16 ) - 4;
  82
  83     /* If the values we got are a bit strange, skip packet */
  84     if( !p_spudec->i_spu_size
  85          || ( p_spudec->i_rle_size >= p_spudec->i_spu_size ) )
  86     {
  87         return( 1 );
  88     }
  89
  90     RemoveBits( &p_spudec->bit_stream, 16 );
  91
  92     return( 0 );
  93 }
  94
  95 /*****************************************************************************
  96  * ParsePacket: parse an SPU packet and send it to the video output
  97  *****************************************************************************
  98  * This function parses the SPU packet and, if valid, sends it to the
  99  * video output.
 100  *****************************************************************************/
 101 void E_(ParsePacket)( spudec_thread_t *p_spudec )
 102 {
 103     subpicture_t * p_spu;
 104     u8           * p_src;
 105     unsigned int   i_offset;
 106
 107     msg_Dbg( p_spudec->p_fifo, "trying to gather a 0x%.2x long subtitle",
 108                                p_spudec->i_spu_size );
 109
 110     /* We cannot display a subpicture with no date */
 111     if( p_spudec->p_fifo->p_first->i_pts == 0 )
 112     {
 113         msg_Warn( p_spudec->p_fifo, "subtitle without a date" );
 114         return;
 115     }
 116
 117     /* Allocate the subpicture internal data. */
 118     p_spu = vout_CreateSubPicture( p_spudec->p_vout, MEMORY_SUBPICTURE,
 119                                    sizeof( subpicture_sys_t )
 120                                     + p_spudec->i_rle_size * 4 );
 121     /* Rationale for the "p_spudec->i_rle_size * 4": we are going to
 122      * expand the RLE stuff so that we won't need to read nibbles later
 123      * on. This will speed things up a lot. Plus, we'll only need to do
 124      * this stupid interlacing stuff once. */
 125
 126     if( p_spu == NULL )
 127     {
 128         return;
 129     }
 130
 131     /* Fill the p_spu structure */
 132     p_spu->pf_render = E_(RenderSPU);
 133     p_spu->p_sys->p_data = (u8*)p_spu->p_sys + sizeof( subpicture_sys_t );
 134     p_spu->p_sys->b_palette = 0;
 135
 136     /* Get display time now. If we do it later, we may miss the PTS. */
 137     p_spu->p_sys->i_pts = p_spudec->p_fifo->p_first->i_pts;
 138
 139     /* Allocate the temporary buffer we will parse */
 140     p_src = malloc( p_spudec->i_rle_size );
 141
 142     if( p_src == NULL )
 143     {
 144         msg_Err( p_spudec->p_fifo, "out of memory" );
 145         vout_DestroySubPicture( p_spudec->p_vout, p_spu );
 146         return;
 147     }
 148
 149     /* Get RLE data */
 150     for( i_offset = 0; i_offset < p_spudec->i_rle_size;
 151          i_offset += SPU_CHUNK_SIZE )
 152     {
 153         GetChunk( &p_spudec->bit_stream, p_src + i_offset,
 154                   ( i_offset + SPU_CHUNK_SIZE < p_spudec->i_rle_size ) ?
 155                   SPU_CHUNK_SIZE : p_spudec->i_rle_size - i_offset );
 156
 157         /* Abort subtitle parsing if we were requested to stop */
 158         if( p_spudec->p_fifo->b_die )
 159         {
 160             free( p_src );
 161             vout_DestroySubPicture( p_spudec->p_vout, p_spu );
 162             return;
 163         }
 164     }
 165
 166 #if 0
 167     /* Dump the subtitle info */
 168     intf_WarnHexDump( 5, p_spu->p_sys->p_data, p_spudec->i_rle_size );
 169 #endif
 170
 171     /* Getting the control part */
 172     if( ParseControlSequences( p_spudec, p_spu ) )
 173     {
 174         /* There was a parse error, delete the subpicture */
 175         free( p_src );
 176         vout_DestroySubPicture( p_spudec->p_vout, p_spu );
 177         return;
 178     }
 179
 180     /* At this point, no more GetBit() command is needed, so we have all
 181      * the data we need to tell whether the subtitle is valid. Thus we
 182      * try to display it and we ignore b_die. */
 183
 184     if( ParseRLE( p_spudec, p_spu, p_src ) )
 185     {
 186         /* There was a parse error, delete the subpicture */
 187         free( p_src );
 188         vout_DestroySubPicture( p_spudec->p_vout, p_spu );
 189         return;
 190     }
 191
 192     msg_Dbg( p_spudec->p_fifo, "total size: 0x%x, RLE offsets: 0x%x 0x%x",
 193              p_spudec->i_spu_size,
 194              p_spu->p_sys->pi_offset[0], p_spu->p_sys->pi_offset[1] );
 195
 196     /* SPU is finished - we can ask the video output to display it */
 197     vout_DisplaySubPicture( p_spudec->p_vout, p_spu );
 198
 199     /* Clean up */
 200     free( p_src );
 201 }
 202
 203 /*****************************************************************************
 204  * ParseControlSequences: parse all SPU control sequences
 205  *****************************************************************************
 206  * This is the most important part in SPU decoding. We get dates, palette
 207  * information, coordinates, and so on. For more information on the
 208  * subtitles format, see http://sam.zoy.org/doc/dvd/subtitles/index.html
 209  *****************************************************************************/
 210 static int ParseControlSequences( spudec_thread_t *p_spudec,
 211                                   subpicture_t * p_spu )
 212 {
 213     /* Our current index in the SPU packet */
 214     int i_index = p_spudec->i_rle_size + 4;
 215
 216     /* The next start-of-control-sequence index and the previous one */
 217     int i_next_seq, i_cur_seq;
 218
 219     /* Command time and date */
 220     u8  i_command;
 221     int i_date;
 222
 223     int i, pi_alpha[4];
 224
 225     /* XXX: temporary variables */
 226     vlc_bool_t b_force_display = 0;
 227
 228     /* Initialize the structure */
 229     p_spu->i_start = p_spu->i_stop = 0;
 230     p_spu->b_ephemer = 0;
 231
 232     do
 233     {
 234         /* Get the control sequence date */
 235         i_date = GetBits( &p_spudec->bit_stream, 16 );
 236
 237         /* Next offset */
 238         i_cur_seq = i_index;
 239         i_next_seq = GetBits( &p_spudec->bit_stream, 16 );
 240
 241         /* Skip what we just read */
 242         i_index += 4;
 243
 244         do
 245         {
 246             i_command = GetBits( &p_spudec->bit_stream, 8 );
 247             i_index++;
 248
 249             switch( i_command )
 250             {
 251                 case SPU_CMD_FORCE_DISPLAY:
 252
 253                     /* 00 (force displaying) */
 254                     p_spu->i_start = p_spu->p_sys->i_pts + ( i_date * 11000 );
 255                     b_force_display = 1;
 256
 257                     break;
 258
 259                 /* Convert the dates in seconds to PTS values */
 260                 case SPU_CMD_START_DISPLAY:
 261
 262                     /* 01 (start displaying) */
 263                     p_spu->i_start = p_spu->p_sys->i_pts + ( i_date * 11000 );
 264
 265                     break;
 266
 267                 case SPU_CMD_STOP_DISPLAY:
 268
 269                     /* 02 (stop displaying) */
 270                     p_spu->i_stop = p_spu->p_sys->i_pts + ( i_date * 11000 );
 271
 272                     break;
 273
 274                 case SPU_CMD_SET_PALETTE:
 275
 276                     /* 03xxxx (palette) */
 277                     if( p_spudec->p_fifo->p_demux_data &&
 278                          *(int*)p_spudec->p_fifo->p_demux_data == 0xBeeF )
 279                     {
 280                         u32 i_color;
 281
 282                         p_spu->p_sys->b_palette = 1;
 283                         for( i = 0; i < 4 ; i++ )
 284                         {
 285                             i_color = ((u32*)((char*)p_spudec->p_fifo->
 286                                         p_demux_data + sizeof(int)))[
 287                                           GetBits(&p_spudec->bit_stream, 4) ];
 288
 289                             /* FIXME: this job should be done sooner */
 290 #ifndef WORDS_BIGENDIAN
 291                             p_spu->p_sys->pi_yuv[3-i][0] = (i_color>>16) & 0xff;
 292                             p_spu->p_sys->pi_yuv[3-i][1] = (i_color>>0) & 0xff;
 293                             p_spu->p_sys->pi_yuv[3-i][2] = (i_color>>8) & 0xff;
 294 #else
 295                             p_spu->p_sys->pi_yuv[3-i][0] = (i_color>>8) & 0xff;
 296                             p_spu->p_sys->pi_yuv[3-i][1] = (i_color>>24) & 0xff;
 297                             p_spu->p_sys->pi_yuv[3-i][2] = (i_color>>16) & 0xff;
 298 #endif
 299                         }
 300                     }
 301                     else
 302                     {
 303                         RemoveBits( &p_spudec->bit_stream, 16 );
 304                     }
 305                     i_index += 2;
 306
 307                     break;
 308
 309                 case SPU_CMD_SET_ALPHACHANNEL:
 310
 311                     /* 04xxxx (alpha channel) */
 312                     pi_alpha[3] = GetBits( &p_spudec->bit_stream, 4 );
 313                     pi_alpha[2] = GetBits( &p_spudec->bit_stream, 4 );
 314                     pi_alpha[1] = GetBits( &p_spudec->bit_stream, 4 );
 315                     pi_alpha[0] = GetBits( &p_spudec->bit_stream, 4 );
 316
 317                     /* Ignore blank alpha palette. Sometimes spurious blank
 318                      * alpha palettes are present - dunno why. */
 319                     if( pi_alpha[0] | pi_alpha[1] | pi_alpha[2] | pi_alpha[3] )
 320                     {
 321                         p_spu->p_sys->pi_alpha[0] = pi_alpha[0];
 322                         p_spu->p_sys->pi_alpha[1] = pi_alpha[1];
 323                         p_spu->p_sys->pi_alpha[2] = pi_alpha[2];
 324                         p_spu->p_sys->pi_alpha[3] = pi_alpha[3];
 325                     }
 326                     else
 327                     {
 328                         msg_Warn( p_spudec->p_fifo,
 329                                   "ignoring blank alpha palette" );
 330                     }
 331
 332                     i_index += 2;
 333
 334                     break;
 335
 336                 case SPU_CMD_SET_COORDINATES:
 337
 338                     /* 05xxxyyyxxxyyy (coordinates) */
 339                     p_spu->i_x = GetBits( &p_spudec->bit_stream, 12 );
 340                     p_spu->i_width = GetBits( &p_spudec->bit_stream, 12 )
 341                                       - p_spu->i_x + 1;
 342
 343                     p_spu->i_y = GetBits( &p_spudec->bit_stream, 12 );
 344                     p_spu->i_height = GetBits( &p_spudec->bit_stream, 12 )
 345                                        - p_spu->i_y + 1;
 346
 347                     i_index += 6;
 348
 349                     break;
 350
 351                 case SPU_CMD_SET_OFFSETS:
 352
 353                     /* 06xxxxyyyy (byte offsets) */
 354                     p_spu->p_sys->pi_offset[0] =
 355                         GetBits( &p_spudec->bit_stream, 16 ) - 4;
 356
 357                     p_spu->p_sys->pi_offset[1] =
 358                         GetBits( &p_spudec->bit_stream, 16 ) - 4;
 359
 360                     i_index += 4;
 361
 362                     break;
 363
 364                 case SPU_CMD_END:
 365
 366                     /* ff (end) */
 367                     break;
 368
 369                 default:
 370
 371                     /* xx (unknown command) */
 372                     msg_Err( p_spudec->p_fifo, "unknown command 0x%.2x",
 373                                                i_command );
 374                     return( 1 );
 375             }
 376
 377             /* We need to check for quit commands here */
 378             if( p_spudec->p_fifo->b_die )
 379             {
 380                 return( 1 );
 381             }
 382
 383         } while( i_command != SPU_CMD_END );
 384
 385     } while( i_index == i_next_seq );
 386
 387     /* Check that the next sequence index matches the current one */
 388     if( i_next_seq != i_cur_seq )
 389     {
 390         msg_Err( p_spudec->p_fifo, "index mismatch (0x%.4x != 0x%.4x)",
 391                                    i_next_seq, i_cur_seq );
 392         return( 1 );
 393     }
 394
 395     if( i_index > p_spudec->i_spu_size )
 396     {
 397         msg_Err( p_spudec->p_fifo, "uh-oh, we went too far (0x%.4x > 0x%.4x)",
 398                                    i_index, p_spudec->i_spu_size );
 399         return( 1 );
 400     }
 401
 402     if( !p_spu->i_start )
 403     {
 404         msg_Err( p_spudec->p_fifo, "no `start display' command" );
 405     }
 406
 407     if( !p_spu->i_stop )
 408     {
 409         /* This subtitle will live for 5 seconds or until the next subtitle */
 410         p_spu->i_stop = p_spu->i_start + 500 * 11000;
 411         p_spu->b_ephemer = 1;
 412     }
 413
 414     /* Get rid of padding bytes */
 415     switch( p_spudec->i_spu_size - i_index )
 416     {
 417         /* Zero or one padding byte, quite usual */
 418         case 1:
 419             RemoveBits( &p_spudec->bit_stream, 8 );
 420             i_index++;
 421         case 0:
 422             break;
 423
 424         /* More than one padding byte - this is very strange, but
 425          * we can deal with it */
 426         default:
 427             msg_Warn( p_spudec->p_fifo,
 428                       "%i padding bytes, we usually get 0 or 1 of them",
 429                       p_spudec->i_spu_size - i_index );
 430
 431             while( i_index < p_spudec->i_spu_size )
 432             {
 433                 RemoveBits( &p_spudec->bit_stream, 8 );
 434                 i_index++;
 435             }
 436
 437             break;
 438     }
 439
 440     if( b_force_display )
 441     {
 442         msg_Err( p_spudec->p_fifo, "\"force display\" command" );
 443         msg_Err( p_spudec->p_fifo, "send mail to <sam@zoy.org> if you "
 444                                    "want to help debugging this" );
 445     }
 446
 447     /* Successfully parsed ! */
 448     return( 0 );
 449 }
 450
 451 /*****************************************************************************
 452  * ParseRLE: parse the RLE part of the subtitle
 453  *****************************************************************************
 454  * This part parses the subtitle graphical data and stores it in a more
 455  * convenient structure for later decoding. For more information on the
 456  * subtitles format, see http://sam.zoy.org/doc/dvd/subtitles/index.html
 457  *****************************************************************************/
 458 static int ParseRLE( spudec_thread_t *p_spudec,
 459                      subpicture_t * p_spu, u8 * p_src )
 460 {
 461     unsigned int i_code;
 462
 463     unsigned int i_width = p_spu->i_width;
 464     unsigned int i_height = p_spu->i_height;
 465     unsigned int i_x, i_y;
 466
 467     u16 *p_dest = (u16 *)p_spu->p_sys->p_data;
 468
 469     /* The subtitles are interlaced, we need two offsets */
 470     unsigned int  i_id = 0;                   /* Start on the even SPU layer */
 471     unsigned int  pi_table[ 2 ];
 472     unsigned int *pi_offset;
 473
 474     vlc_bool_t b_empty_top = 1,
 475                b_empty_bottom = 0;
 476     unsigned int i_skipped_top = 0,
 477                  i_skipped_bottom = 0;
 478
 479     /* Colormap statistics */
 480     int i_border = -1;
 481     int stats[4]; stats[0] = stats[1] = stats[2] = stats[3] = 0;
 482
 483     pi_table[ 0 ] = p_spu->p_sys->pi_offset[ 0 ] << 1;
 484     pi_table[ 1 ] = p_spu->p_sys->pi_offset[ 1 ] << 1;
 485
 486     for( i_y = 0 ; i_y < i_height ; i_y++ )
 487     {
 488         pi_offset = pi_table + i_id;
 489
 490         for( i_x = 0 ; i_x < i_width ; i_x += i_code >> 2 )
 491         {
 492             i_code = AddNibble( 0, p_src, pi_offset );
 493
 494             if( i_code < 0x04 )
 495             {
 496                 i_code = AddNibble( i_code, p_src, pi_offset );
 497
 498                 if( i_code < 0x10 )
 499                 {
 500                     i_code = AddNibble( i_code, p_src, pi_offset );
 501
 502                     if( i_code < 0x040 )
 503                     {
 504                         i_code = AddNibble( i_code, p_src, pi_offset );
 505
 506                         if( i_code < 0x0100 )
 507                         {
 508                             /* If the 14 first bits are set to 0, then it's a
 509                              * new line. We emulate it. */
 510                             if( i_code < 0x0004 )
 511                             {
 512                                 i_code |= ( i_width - i_x ) << 2;
 513                             }
 514                             else
 515                             {
 516                                 /* We have a boo boo ! */
 517                                 msg_Err( p_spudec->p_fifo, "unknown RLE code "
 518                                          "0x%.4x", i_code );
 519                                 return( 1 );
 520                             }
 521                         }
 522                     }
 523                 }
 524             }
 525
 526             if( ( (i_code >> 2) + i_x + i_y * i_width ) > i_height * i_width )
 527             {
 528                 msg_Err( p_spudec->p_fifo,
 529                          "out of bounds, %i at (%i,%i) is out of %ix%i",
 530                          i_code >> 2, i_x, i_y, i_width, i_height );
 531                 return( 1 );
 532             }
 533
 534             /* Try to find the border color */
 535             if( p_spu->p_sys->pi_alpha[ i_code & 0x3 ] != 0x00 )
 536             {
 537                 i_border = i_code & 0x3;
 538                 stats[i_border] += i_code >> 2;
 539             }
 540
 541             if( (i_code >> 2) == i_width
 542                  && p_spu->p_sys->pi_alpha[ i_code & 0x3 ] == 0x00 )
 543             {
 544                 if( b_empty_top )
 545                 {
 546                     /* This is a blank top line, we skip it */
 547                     i_skipped_top++;
 548                 }
 549                 else
 550                 {
 551                     /* We can't be sure the current lines will be skipped,
 552                      * so we store the code just in case. */
 553                     *p_dest++ = i_code;
 554
 555                     b_empty_bottom = 1;
 556                     i_skipped_bottom++;
 557                 }
 558             }
 559             else
 560             {
 561                 /* We got a valid code, store it */
 562                 *p_dest++ = i_code;
 563
 564                 /* Valid code means no blank line */
 565                 b_empty_top = 0;
 566                 b_empty_bottom = 0;
 567                 i_skipped_bottom = 0;
 568             }
 569         }
 570
 571         /* Check that we didn't go too far */
 572         if( i_x > i_width )
 573         {
 574             msg_Err( p_spudec->p_fifo, "i_x overflowed, %i > %i",
 575                                        i_x, i_width );
 576             return( 1 );
 577         }
 578
 579         /* Byte-align the stream */
 580         if( *pi_offset & 0x1 )
 581         {
 582             (*pi_offset)++;
 583         }
 584
 585         /* Swap fields */
 586         i_id = ~i_id & 0x1;
 587     }
 588
 589     /* We shouldn't get any padding bytes */
 590     if( i_y < i_height )
 591     {
 592         msg_Err( p_spudec->p_fifo, "padding bytes found in RLE sequence" );
 593         msg_Err( p_spudec->p_fifo, "send mail to <sam@zoy.org> if you "
 594                                    "want to help debugging this" );
 595
 596         /* Skip them just in case */
 597         while( i_y < i_height )
 598         {
 599             *p_dest++ = i_width << 2;
 600             i_y++;
 601         }
 602
 603         return( 1 );
 604     }
 605
 606     msg_Dbg( p_spudec->p_fifo, "valid subtitle, size: %ix%i, position: %i,%i",
 607              p_spu->i_width, p_spu->i_height, p_spu->i_x, p_spu->i_y );
 608
 609     /* Crop if necessary */
 610     if( i_skipped_top || i_skipped_bottom )
 611     {
 612         p_spu->i_y += i_skipped_top;
 613         p_spu->i_height -= i_skipped_top + i_skipped_bottom;
 614
 615         msg_Dbg( p_spudec->p_fifo, "cropped to: %ix%i, position: %i,%i",
 616                  p_spu->i_width, p_spu->i_height, p_spu->i_x, p_spu->i_y );
 617     }
 618
 619     /* Handle color if no palette was found */
 620     if( !p_spu->p_sys->b_palette )
 621     {
 622         int i, i_inner = -1, i_shade = -1;
 623
 624         /* Set the border color */
 625         p_spu->p_sys->pi_yuv[i_border][0] = 0x00;
 626         p_spu->p_sys->pi_yuv[i_border][1] = 0x80;
 627         p_spu->p_sys->pi_yuv[i_border][2] = 0x80;
 628         stats[i_border] = 0;
 629
 630         /* Find the inner colors */
 631         for( i = 0 ; i < 4 && i_inner == -1 ; i++ )
 632         {
 633             if( stats[i] )
 634             {
 635                 i_inner = i;
 636             }
 637         }
 638
 639         for(       ; i < 4 && i_shade == -1 ; i++ )
 640         {
 641             if( stats[i] )
 642             {
 643                 if( stats[i] > stats[i_inner] )
 644                 {
 645                     i_shade = i_inner;
 646                     i_inner = i;
 647                 }
 648                 else
 649                 {
 650                     i_shade = i;
 651                 }
 652             }
 653         }
 654
 655         /* Set the inner color */
 656         if( i_inner != -1 )
 657         {
 658             p_spu->p_sys->pi_yuv[i_inner][0] = 0xff;
 659             p_spu->p_sys->pi_yuv[i_inner][1] = 0x80;
 660             p_spu->p_sys->pi_yuv[i_inner][2] = 0x80;
 661         }
 662
 663         /* Set the anti-aliasing color */
 664         if( i_shade != -1 )
 665         {
 666             p_spu->p_sys->pi_yuv[i_shade][0] = 0x80;
 667             p_spu->p_sys->pi_yuv[i_shade][1] = 0x80;
 668             p_spu->p_sys->pi_yuv[i_shade][2] = 0x80;
 669         }
 670
 671         msg_Dbg( p_spudec->p_fifo,
 672                  "using custom palette (border %i, inner %i, shade %i)",
 673                  i_border, i_inner, i_shade );
 674     }
 675
 676     return( 0 );
 677 }
 678