libavcodec/rle.h

   1 /*
   2  * RLE encoder
   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 #ifndef FFMPEG_RLE_H
  22 #define FFMPEG_RLE_H
  23
  24 #include <stdint.h>
  25
  26 /**
  27  * RLE compress the row, with maximum size of out_size. Value before repeated bytes is (count ^ xor_rep) + add_rep.
  28  *                                                      Value before raw bytes is      (count ^ xor_raw) + add_raw.
  29  * @param outbuf Output buffer
  30  * @param out_size Maximum output size
  31  * @param ptr Input buffer
  32  * @param bpp Bytes per pixel
  33  * @param w Image width
  34  * @return Size of output in bytes, or -1 if larger than out_size
  35  */
  36 int ff_rle_encode(uint8_t *outbuf, int out_size, const uint8_t *inbuf, int bpp, int w,
  37                   int add_rep, int xor_rep, int add_raw, int xor_raw);
  38
  39 #endif /* FFMPEG_RLE_H */