[svn] / trunk / xvidcore / src / bitstream / bitstream.h Repository:
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Diff of /trunk/xvidcore/src/bitstream/bitstream.h

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revision 1725, Wed Aug 23 20:27:22 2006 UTC revision 1726, Sun Sep 3 08:46:56 2006 UTC
# Line 19  Line 19 
19   *  along with this program ; if not, write to the Free Software   *  along with this program ; if not, write to the Free Software
20   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
21   *   *
22   * $Id: bitstream.h,v 1.23 2006-04-14 07:24:47 Skal Exp $   * $Id: bitstream.h,v 1.24 2006-09-03 08:46:56 Skal Exp $
23   *   *
24   ****************************************************************************/   ****************************************************************************/
25    
# Line 162  Line 162 
162                                 const FRAMEINFO * const frame,                                 const FRAMEINFO * const frame,
163                                 int mbnum);                                 int mbnum);
164    
165    /*****************************************************************************
166     * Bitstream
167     ****************************************************************************/
168    
169    /* Input buffer should be readable as full chunks of 8bytes, including
170    the end of the buffer. Padding might be appropriate. If only chunks
171    of 4bytes are applicable, define XVID_SAFE_BS_TAIL. Note that this will
172    slow decoding, so consider this as a last-resort solution */
173    /* #define XVID_SAFE_BS_TAIL */
174    
175  /* initialise bitstream structure */  /* initialise bitstream structure */
176    
177  static void __inline  static void __inline
# Line 263  Line 273 
273                  uint32_t tmp;                  uint32_t tmp;
274    
275                  bs->bufa = bs->bufb;                  bs->bufa = bs->bufb;
276    #if defined(XVID_SAFE_BS_TAIL)
277                    if (bs->tail<(bs->start+((bs->length+3)>>2)))
278    #endif
279                    {
280                  tmp = *((uint32_t *) bs->tail + 2);                  tmp = *((uint32_t *) bs->tail + 2);
281  #ifndef ARCH_IS_BIG_ENDIAN  #ifndef ARCH_IS_BIG_ENDIAN
282                  BSWAP(tmp);                  BSWAP(tmp);
283  #endif  #endif
284                  bs->bufb = tmp;                  bs->bufb = tmp;
285                  bs->tail++;                  bs->tail++;
286                    }
287    #if defined(XVID_SAFE_BS_TAIL)
288                    else {
289                            bs->bufb = 0;
290                    }
291    #endif
292                  bs->pos -= 32;                  bs->pos -= 32;
293          }          }
294  }  }
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