libavcodec/pngdsp.h

   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,
  29                          uint8_t *src1 /* align 16 */,
  30                          uint8_t *src2, 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 /* AVCODEC_PNGDSP_H */