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  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 <string.h>
  22.  
  23. #include "libavutil/attributes.h"
  24. #include "libavcodec/avcodec.h"
  25. #include "libavcodec/vp3dsp.h"
  26. #include "libavcodec/dsputil.h"
  27. #include "dsputil_bfin.h"
  28. #include "vp3_bfin.h"
  29.  
  30. /* Intra iDCT offset 128 */
  31. static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block)
  32. {
  33.     const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + 128;
  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[block[j*8 + i]];
  41.  
  42.     memset(block, 0, 128);
  43. }
  44.  
  45. /* Inter iDCT */
  46. static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block)
  47. {
  48.     const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
  49.     int i, j;
  50.  
  51.     ff_bfin_vp3_idct (block);
  52.     for (i = 0; i < 8; i++)
  53.         for (j = 0; j < 8; j++)
  54.             dest[line_size*i + j] = cm[dest[line_size*i + j] + block[j*8 + i]];
  55.  
  56.     memset(block, 0, 128);
  57. }
  58.  
  59. av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags)
  60. {
  61.     if (!(flags & CODEC_FLAG_BITEXACT)) {
  62.         c->idct_add = bfin_vp3_idct_add;
  63.         c->idct_put = bfin_vp3_idct_put;
  64.     }
  65. }
  66.