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2134
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1 /*
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2 * LZO 1x decompression
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3 * copyright (c) 2006 Reimar Doeffinger
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4 *
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5 * This file is part of FFmpeg.
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6 *
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7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
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9 * License as published by the Free Software Foundation; either
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10 * version 2.1 of the License, or (at your option) any later version.
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11 *
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12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with FFmpeg; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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20 */
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21
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22 #ifndef AVUTIL_LZO_H
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23 #define AVUTIL_LZO_H
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24
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25 /**
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26 * @defgroup lavu_lzo LZO
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27 * @ingroup lavu_crypto
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28 *
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29 * @{
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30 */
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31
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32 #include <stdint.h>
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33
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34 /** @name Error flags returned by av_lzo1x_decode
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35 * @{ */
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36 /// end of the input buffer reached before decoding finished
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37 #define AV_LZO_INPUT_DEPLETED 1
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38 /// decoded data did not fit into output buffer
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39 #define AV_LZO_OUTPUT_FULL 2
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40 /// a reference to previously decoded data was wrong
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41 #define AV_LZO_INVALID_BACKPTR 4
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42 /// a non-specific error in the compressed bitstream
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43 #define AV_LZO_ERROR 8
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44 /** @} */
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45
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46 #define AV_LZO_INPUT_PADDING 8
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47 #define AV_LZO_OUTPUT_PADDING 12
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48
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49 /**
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50 * @brief Decodes LZO 1x compressed data.
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51 * @param out output buffer
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52 * @param outlen size of output buffer, number of bytes left are returned here
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53 * @param in input buffer
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54 * @param inlen size of input buffer, number of bytes left are returned here
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55 * @return 0 on success, otherwise a combination of the error flags above
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56 *
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57 * Make sure all buffers are appropriately padded, in must provide
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58 * AV_LZO_INPUT_PADDING, out must provide AV_LZO_OUTPUT_PADDING additional bytes.
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59 */
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60 int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen);
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61
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62 /**
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63 * @}
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64 */
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65
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66 #endif /* AVUTIL_LZO_H */
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