| … | |
… | |
| 44 | ** |
44 | ** |
| 45 | ** This algorithm is believed to be patent-free. |
45 | ** This algorithm is believed to be patent-free. |
| 46 | ** |
46 | ** |
| 47 | ***********************************************************************/ |
47 | ***********************************************************************/ |
| 48 | |
48 | |
| 49 | #define LZF_VERSION 0x0105 /* 1.5, API version */ |
49 | /* API version (major * 256 + minor) |
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50 | * major API version gets bumped on incompatible changes. |
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51 | * minor API version gets bumped on compatible changes. |
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52 | * 1.5 => 1.6: add LZF_MAX_COMPRESSED_SIZE |
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53 | */ |
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54 | #define LZF_VERSION 0x0106 |
| 50 | |
55 | |
| 51 | /* |
56 | /* |
| 52 | * Compress in_len bytes stored at the memory block starting at |
57 | * Compress in_len bytes stored at the memory block starting at |
| 53 | * in_data and write the result to out_data, up to a maximum length |
58 | * in_data and write the result to out_data, up to a maximum length |
| 54 | * of out_len bytes. |
59 | * of out_len bytes. |
| … | |
… | |
| 76 | unsigned int |
81 | unsigned int |
| 77 | lzf_compress (const void *const in_data, unsigned int in_len, |
82 | lzf_compress (const void *const in_data, unsigned int in_len, |
| 78 | void *out_data, unsigned int out_len); |
83 | void *out_data, unsigned int out_len); |
| 79 | |
84 | |
| 80 | /* |
85 | /* |
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86 | * The maximum out_len that needs to be allocated to make sure |
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87 | * any input data can be compressed without overflowing the output |
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88 | * buffer, i.e. maximum out_len = LZF_MAX_COMPRESSED_SIZE (in_len). |
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89 | * This is useful if you don't want to bother with the case of |
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90 | * incompressible data and just want to provide a buffer that is |
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91 | * guaranteeed to be big enough. |
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92 | * This macro can be used at preprocessing time. |
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93 | */ |
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94 | #define LZF_MAX_COMPRESSED_SIZE(n) ((n) * 33 / 32 + 1) |
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95 | |
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96 | /* |
| 81 | * Decompress data compressed with some version of the lzf_compress |
97 | * Decompress data compressed with some version of the lzf_compress |
| 82 | * function and stored at location in_data and length in_len. The result |
98 | * function and stored at location in_data and length in_len. The result |
| 83 | * will be stored at out_data up to a maximum of out_len characters. |
99 | * will be stored at out_data up to a maximum of out_len characters. |
| 84 | * |
100 | * |
| 85 | * If the output buffer is not large enough to hold the decompressed |
101 | * If the output buffer is not large enough to hold the decompressed |
