libavcodec/bfin/vp3_bfin.c

   1 /*
   2  * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include "libavcodec/avcodec.h"
  22 #include "libavcodec/dsputil.h"
  23 #include "dsputil_bfin.h"
  24
  25 extern void ff_bfin_vp3_idct (DCTELEM *block) attribute_l1_text;
  26 extern void ff_bfin_idct (DCTELEM *block) attribute_l1_text;
  27 extern void ff_bfin_add_pixels_clamped (DCTELEM *block, uint8_t *dest, int line_size) attribute_l1_text;
  28 extern void ff_bfin_put_pixels_clamped (DCTELEM *block, uint8_t *dest, int line_size) attribute_l1_text;
  29
  30 /* Intra iDCT offset 128 */
  31 void ff_bfin_vp3_idct_put (uint8_t *dest, int line_size, DCTELEM *block)
  32 {
  33     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
  34     int i,j;
  35
  36     ff_bfin_vp3_idct (block);
  37
  38     for (i=0;i<8;i++)
  39         for (j=0;j<8;j++)
  40             dest[line_size*i+j]=cm[128+block[i*8+j]];
  41 }
  42
  43 /* Inter iDCT */
  44 void ff_bfin_vp3_idct_add (uint8_t *dest, int line_size, DCTELEM *block)
  45 {
  46     ff_bfin_vp3_idct (block);
  47     ff_bfin_add_pixels_clamped (block, dest, line_size);
  48 }
  49
  50