lzo.h (2044B)
1 /* 2 * LZO 1x decompression 3 * copyright (c) 2006 Reimar Doeffinger 4 * 5 * This file is part of Libav. 6 * 7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #ifndef AVUTIL_LZO_H 23 #define AVUTIL_LZO_H 24 25 /** 26 * @defgroup lavu_lzo LZO 27 * @ingroup lavu_crypto 28 * 29 * @{ 30 */ 31 32 #include <stdint.h> 33 34 /** @name Error flags returned by av_lzo1x_decode 35 * @{ */ 36 /// end of the input buffer reached before decoding finished 37 #define AV_LZO_INPUT_DEPLETED 1 38 /// decoded data did not fit into output buffer 39 #define AV_LZO_OUTPUT_FULL 2 40 /// a reference to previously decoded data was wrong 41 #define AV_LZO_INVALID_BACKPTR 4 42 /// a non-specific error in the compressed bitstream 43 #define AV_LZO_ERROR 8 44 /** @} */ 45 46 #define AV_LZO_INPUT_PADDING 8 47 #define AV_LZO_OUTPUT_PADDING 12 48 49 /** 50 * @brief Decodes LZO 1x compressed data. 51 * @param out output buffer 52 * @param outlen size of output buffer, number of bytes left are returned here 53 * @param in input buffer 54 * @param inlen size of input buffer, number of bytes left are returned here 55 * @return 0 on success, otherwise a combination of the error flags above 56 * 57 * Make sure all buffers are appropriately padded, in must provide 58 * AV_LZO_INPUT_PADDING, out must provide AV_LZO_OUTPUT_PADDING additional bytes. 59 */ 60 int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen); 61 62 /** 63 * @} 64 */ 65 66 #endif /* AVUTIL_LZO_H */