Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/brotli/c/common/transform.h @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
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1 /* transforms is a part of ABI, but not API.
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2
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3 It means that there are some functions that are supposed to be in "common"
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4 library, but header itself is not placed into include/brotli. This way,
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5 aforementioned functions will be available only to brotli internals.
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6 */
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8 #ifndef BROTLI_COMMON_TRANSFORM_H_
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9 #define BROTLI_COMMON_TRANSFORM_H_
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11 #include <brotli/port.h>
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12 #include <brotli/types.h>
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13
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14 #if defined(__cplusplus) || defined(c_plusplus)
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15 extern "C" {
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16 #endif
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18 enum BrotliWordTransformType {
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19 BROTLI_TRANSFORM_IDENTITY = 0,
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20 BROTLI_TRANSFORM_OMIT_LAST_1 = 1,
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21 BROTLI_TRANSFORM_OMIT_LAST_2 = 2,
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22 BROTLI_TRANSFORM_OMIT_LAST_3 = 3,
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23 BROTLI_TRANSFORM_OMIT_LAST_4 = 4,
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24 BROTLI_TRANSFORM_OMIT_LAST_5 = 5,
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25 BROTLI_TRANSFORM_OMIT_LAST_6 = 6,
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26 BROTLI_TRANSFORM_OMIT_LAST_7 = 7,
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27 BROTLI_TRANSFORM_OMIT_LAST_8 = 8,
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28 BROTLI_TRANSFORM_OMIT_LAST_9 = 9,
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29 BROTLI_TRANSFORM_UPPERCASE_FIRST = 10,
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30 BROTLI_TRANSFORM_UPPERCASE_ALL = 11,
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31 BROTLI_TRANSFORM_OMIT_FIRST_1 = 12,
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32 BROTLI_TRANSFORM_OMIT_FIRST_2 = 13,
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33 BROTLI_TRANSFORM_OMIT_FIRST_3 = 14,
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34 BROTLI_TRANSFORM_OMIT_FIRST_4 = 15,
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35 BROTLI_TRANSFORM_OMIT_FIRST_5 = 16,
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36 BROTLI_TRANSFORM_OMIT_FIRST_6 = 17,
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37 BROTLI_TRANSFORM_OMIT_FIRST_7 = 18,
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38 BROTLI_TRANSFORM_OMIT_FIRST_8 = 19,
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39 BROTLI_TRANSFORM_OMIT_FIRST_9 = 20,
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40 BROTLI_TRANSFORM_SHIFT_FIRST = 21,
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41 BROTLI_TRANSFORM_SHIFT_ALL = 22,
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42 BROTLI_NUM_TRANSFORM_TYPES /* Counts transforms, not a transform itself. */
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43 };
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45 #define BROTLI_TRANSFORMS_MAX_CUT_OFF BROTLI_TRANSFORM_OMIT_LAST_9
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47 typedef struct BrotliTransforms {
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48 uint16_t prefix_suffix_size;
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49 /* Last character must be null, so prefix_suffix_size must be at least 1. */
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50 const uint8_t* prefix_suffix;
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51 const uint16_t* prefix_suffix_map;
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52 uint32_t num_transforms;
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53 /* Each entry is a [prefix_id, transform, suffix_id] triplet. */
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54 const uint8_t* transforms;
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55 /* Shift for BROTLI_TRANSFORM_SHIFT_FIRST and BROTLI_TRANSFORM_SHIFT_ALL,
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56 must be NULL if and only if no such transforms are present. */
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57 const uint8_t* params;
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58 /* Indices of transforms like ["", BROTLI_TRANSFORM_OMIT_LAST_#, ""].
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59 0-th element corresponds to ["", BROTLI_TRANSFORM_IDENTITY, ""].
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60 -1, if cut-off transform does not exist. */
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61 int16_t cutOffTransforms[BROTLI_TRANSFORMS_MAX_CUT_OFF + 1];
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62 } BrotliTransforms;
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64 /* T is BrotliTransforms*; result is uint8_t. */
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65 #define BROTLI_TRANSFORM_PREFIX_ID(T, I) ((T)->transforms[((I) * 3) + 0])
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66 #define BROTLI_TRANSFORM_TYPE(T, I) ((T)->transforms[((I) * 3) + 1])
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67 #define BROTLI_TRANSFORM_SUFFIX_ID(T, I) ((T)->transforms[((I) * 3) + 2])
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69 /* T is BrotliTransforms*; result is const uint8_t*. */
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70 #define BROTLI_TRANSFORM_PREFIX(T, I) (&(T)->prefix_suffix[ \
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71 (T)->prefix_suffix_map[BROTLI_TRANSFORM_PREFIX_ID(T, I)]])
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72 #define BROTLI_TRANSFORM_SUFFIX(T, I) (&(T)->prefix_suffix[ \
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73 (T)->prefix_suffix_map[BROTLI_TRANSFORM_SUFFIX_ID(T, I)]])
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75 BROTLI_COMMON_API const BrotliTransforms* BrotliGetTransforms(void);
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76
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77 BROTLI_COMMON_API int BrotliTransformDictionaryWord(
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78 uint8_t* dst, const uint8_t* word, int len,
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79 const BrotliTransforms* transforms, int transform_idx);
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80
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81 #if defined(__cplusplus) || defined(c_plusplus)
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82 } /* extern "C" */
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83 #endif
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84
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85 #endif /* BROTLI_COMMON_TRANSFORM_H_ */