Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/brotli/c/enc/brotli_bit_stream.h @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
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1 /* Copyright 2014 Google Inc. All Rights Reserved.
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3 Distributed under MIT license.
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4 See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
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5 */
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7 /* Functions to convert brotli-related data structures into the
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8 brotli bit stream. The functions here operate under
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9 assumption that there is enough space in the storage, i.e., there are
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10 no out-of-range checks anywhere.
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12 These functions do bit addressing into a byte array. The byte array
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13 is called "storage" and the index to the bit is called storage_ix
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14 in function arguments. */
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16 #ifndef BROTLI_ENC_BROTLI_BIT_STREAM_H_
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17 #define BROTLI_ENC_BROTLI_BIT_STREAM_H_
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19 #include <brotli/types.h>
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21 #include "../common/context.h"
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22 #include "../common/platform.h"
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23 #include "command.h"
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24 #include "entropy_encode.h"
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25 #include "memory.h"
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26 #include "metablock.h"
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28 #if defined(__cplusplus) || defined(c_plusplus)
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29 extern "C" {
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30 #endif
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32 /* All Store functions here will use a storage_ix, which is always the bit
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33 position for the current storage. */
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35 BROTLI_INTERNAL void BrotliStoreHuffmanTree(const uint8_t* depths, size_t num,
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36 HuffmanTree* tree, size_t* storage_ix, uint8_t* storage);
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38 BROTLI_INTERNAL void BrotliBuildAndStoreHuffmanTreeFast(
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39 HuffmanTree* tree, const uint32_t* histogram, const size_t histogram_total,
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40 const size_t max_bits, uint8_t* depth, uint16_t* bits, size_t* storage_ix,
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41 uint8_t* storage);
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43 /* REQUIRES: length > 0 */
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44 /* REQUIRES: length <= (1 << 24) */
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45 BROTLI_INTERNAL void BrotliStoreMetaBlock(MemoryManager* m,
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46 const uint8_t* input, size_t start_pos, size_t length, size_t mask,
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47 uint8_t prev_byte, uint8_t prev_byte2, BROTLI_BOOL is_last,
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48 const BrotliEncoderParams* params, ContextType literal_context_mode,
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49 const Command* commands, size_t n_commands, const MetaBlockSplit* mb,
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50 size_t* storage_ix, uint8_t* storage);
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52 /* Stores the meta-block without doing any block splitting, just collects
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53 one histogram per block category and uses that for entropy coding.
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54 REQUIRES: length > 0
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55 REQUIRES: length <= (1 << 24) */
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56 BROTLI_INTERNAL void BrotliStoreMetaBlockTrivial(MemoryManager* m,
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57 const uint8_t* input, size_t start_pos, size_t length, size_t mask,
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58 BROTLI_BOOL is_last, const BrotliEncoderParams* params,
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59 const Command* commands, size_t n_commands,
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60 size_t* storage_ix, uint8_t* storage);
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62 /* Same as above, but uses static prefix codes for histograms with a only a few
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63 symbols, and uses static code length prefix codes for all other histograms.
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64 REQUIRES: length > 0
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65 REQUIRES: length <= (1 << 24) */
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66 BROTLI_INTERNAL void BrotliStoreMetaBlockFast(MemoryManager* m,
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67 const uint8_t* input, size_t start_pos, size_t length, size_t mask,
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68 BROTLI_BOOL is_last, const BrotliEncoderParams* params,
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69 const Command* commands, size_t n_commands,
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70 size_t* storage_ix, uint8_t* storage);
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72 /* This is for storing uncompressed blocks (simple raw storage of
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73 bytes-as-bytes).
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74 REQUIRES: length > 0
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75 REQUIRES: length <= (1 << 24) */
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76 BROTLI_INTERNAL void BrotliStoreUncompressedMetaBlock(
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77 BROTLI_BOOL is_final_block, const uint8_t* BROTLI_RESTRICT input,
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78 size_t position, size_t mask, size_t len,
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79 size_t* BROTLI_RESTRICT storage_ix, uint8_t* BROTLI_RESTRICT storage);
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81 #if defined(BROTLI_TEST)
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82 void GetBlockLengthPrefixCodeForTest(uint32_t, size_t*, uint32_t*, uint32_t*);
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83 #endif
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85 #if defined(__cplusplus) || defined(c_plusplus)
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86 } /* extern "C" */
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87 #endif
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89 #endif /* BROTLI_ENC_BROTLI_BIT_STREAM_H_ */