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  1. /*
  2.  * PNG image format
  3.  * Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
  4.  *
  5.  * This file is part of FFmpeg.
  6.  *
  7.  * FFmpeg is free software; you can redistribute it and/or
  8.  * modify it under the terms of the GNU Lesser General Public
  9.  * License as published by the Free Software Foundation; either
  10.  * version 2.1 of the License, or (at your option) any later version.
  11.  *
  12.  * FFmpeg is distributed in the hope that it will be useful,
  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15.  * Lesser General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU Lesser General Public
  18.  * License along with FFmpeg; if not, write to the Free Software
  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20.  */
  21.  
  22. #ifndef AVCODEC_PNGDSP_H
  23. #define AVCODEC_PNGDSP_H
  24.  
  25. #include <stdint.h>
  26.  
  27. typedef struct PNGDSPContext {
  28.     void (*add_bytes_l2)(uint8_t *dst  /* align 16 */,
  29.                          uint8_t *src1 /* align 16 */,
  30.                          uint8_t *src2 /* align 16 */, int w);
  31.  
  32.     /* this might write to dst[w] */
  33.     void (*add_paeth_prediction)(uint8_t *dst, uint8_t *src,
  34.                                  uint8_t *top, int w, int bpp);
  35. } PNGDSPContext;
  36.  
  37. void ff_pngdsp_init(PNGDSPContext *dsp);
  38. void ff_pngdsp_init_x86(PNGDSPContext *dsp);
  39.  
  40. #endif /* AVCDODEC_PNGDSP_H */
  41.