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Diffstat (limited to 'lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h')
-rw-r--r-- | lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h b/lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h new file mode 100644 index 0000000000..6788054bff --- /dev/null +++ b/lib/rbcodec/codecs/libwmavoice/libavutil/lzo.h | |||
@@ -0,0 +1,66 @@ | |||
1 | /* | ||
2 | * LZO 1x decompression | ||
3 | * copyright (c) 2006 Reimar Doeffinger | ||
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 AVUTIL_LZO_H | ||
23 | #define AVUTIL_LZO_H | ||
24 | |||
25 | #include <stdint.h> | ||
26 | |||
27 | /** \defgroup errflags Error flags returned by av_lzo1x_decode | ||
28 | * \{ */ | ||
29 | //! end of the input buffer reached before decoding finished | ||
30 | #define AV_LZO_INPUT_DEPLETED 1 | ||
31 | //! decoded data did not fit into output buffer | ||
32 | #define AV_LZO_OUTPUT_FULL 2 | ||
33 | //! a reference to previously decoded data was wrong | ||
34 | #define AV_LZO_INVALID_BACKPTR 4 | ||
35 | //! a non-specific error in the compressed bitstream | ||
36 | #define AV_LZO_ERROR 8 | ||
37 | /** \} */ | ||
38 | |||
39 | #define AV_LZO_INPUT_PADDING 8 | ||
40 | #define AV_LZO_OUTPUT_PADDING 12 | ||
41 | |||
42 | /** | ||
43 | * \brief Decodes LZO 1x compressed data. | ||
44 | * \param out output buffer | ||
45 | * \param outlen size of output buffer, number of bytes left are returned here | ||
46 | * \param in input buffer | ||
47 | * \param inlen size of input buffer, number of bytes left are returned here | ||
48 | * \return 0 on success, otherwise a combination of the error flags above | ||
49 | * | ||
50 | * Make sure all buffers are appropriately padded, in must provide | ||
51 | * AV_LZO_INPUT_PADDING, out must provide AV_LZO_OUTPUT_PADDING additional bytes. | ||
52 | */ | ||
53 | int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen); | ||
54 | |||
55 | /** | ||
56 | * \brief deliberately overlapping memcpy implementation | ||
57 | * \param dst destination buffer; must be padded with 12 additional bytes | ||
58 | * \param back how many bytes back we start (the initial size of the overlapping window) | ||
59 | * \param cnt number of bytes to copy, must be >= 0 | ||
60 | * | ||
61 | * cnt > back is valid, this will copy the bytes we just copied, | ||
62 | * thus creating a repeating pattern with a period length of back. | ||
63 | */ | ||
64 | void av_memcpy_backptr(uint8_t *dst, int back, int cnt); | ||
65 | |||
66 | #endif /* AVUTIL_LZO_H */ | ||