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rle.h
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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 AVCODEC_RLE_H
22 #define AVCODEC_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 inbuf 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 /* AVCODEC_RLE_H */