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update Brotli to version 1.0.6
This commit is contained in:
Tino Reichardt
@@ -28,18 +28,25 @@
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/* "code length of 8 is repeated" */
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#define BROTLI_INITIAL_REPEATED_CODE_LENGTH 8
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/* "Large Window Brotli" */
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#define BROTLI_LARGE_MAX_DISTANCE_BITS 62U
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#define BROTLI_LARGE_MIN_WBITS 10
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#define BROTLI_LARGE_MAX_WBITS 30
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/* Specification: 4. Encoding of distances */
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#define BROTLI_NUM_DISTANCE_SHORT_CODES 16
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#define BROTLI_MAX_NPOSTFIX 3
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#define BROTLI_MAX_NDIRECT 120
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#define BROTLI_MAX_DISTANCE_BITS 24U
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/* BROTLI_NUM_DISTANCE_SYMBOLS == 520 */
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#define BROTLI_NUM_DISTANCE_SYMBOLS (BROTLI_NUM_DISTANCE_SHORT_CODES + \
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BROTLI_MAX_NDIRECT + \
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(BROTLI_MAX_DISTANCE_BITS << \
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(BROTLI_MAX_NPOSTFIX + 1)))
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/* Distance that is guaranteed to be representable in any stream. */
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#define BROTLI_DISTANCE_ALPHABET_SIZE(NPOSTFIX, NDIRECT, MAXNBITS) ( \
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BROTLI_NUM_DISTANCE_SHORT_CODES + (NDIRECT) + \
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((MAXNBITS) << ((NPOSTFIX) + 1)))
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/* BROTLI_NUM_DISTANCE_SYMBOLS == 1128 */
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#define BROTLI_NUM_DISTANCE_SYMBOLS \
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BROTLI_DISTANCE_ALPHABET_SIZE( \
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BROTLI_MAX_NDIRECT, BROTLI_MAX_NPOSTFIX, BROTLI_LARGE_MAX_DISTANCE_BITS)
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#define BROTLI_MAX_DISTANCE 0x3FFFFFC
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#define BROTLI_MAX_ALLOWED_DISTANCE 0x7FFFFFFC
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/* 7.1. Context modes and context ID lookup for literals */
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/* "context IDs for literals are in the range of 0..63" */
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261
C/brotli/common/context.h
Normal file
261
C/brotli/common/context.h
Normal file
@@ -0,0 +1,261 @@
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/* Copyright 2013 Google Inc. All Rights Reserved.
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Distributed under MIT license.
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See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
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*/
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/* Lookup table to map the previous two bytes to a context id.
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There are four different context modeling modes defined here:
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CONTEXT_LSB6: context id is the least significant 6 bits of the last byte,
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CONTEXT_MSB6: context id is the most significant 6 bits of the last byte,
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CONTEXT_UTF8: second-order context model tuned for UTF8-encoded text,
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CONTEXT_SIGNED: second-order context model tuned for signed integers.
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If |p1| and |p2| are the previous two bytes, and |mode| is current context
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mode, we calculate the context as:
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context = ContextLut(mode)[p1] | ContextLut(mode)[p2 + 256].
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For CONTEXT_UTF8 mode, if the previous two bytes are ASCII characters
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(i.e. < 128), this will be equivalent to
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context = 4 * context1(p1) + context2(p2),
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where context1 is based on the previous byte in the following way:
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0 : non-ASCII control
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1 : \t, \n, \r
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2 : space
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3 : other punctuation
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4 : " '
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5 : %
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6 : ( < [ {
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7 : ) > ] }
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8 : , ; :
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9 : .
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10 : =
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11 : number
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12 : upper-case vowel
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13 : upper-case consonant
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14 : lower-case vowel
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15 : lower-case consonant
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and context2 is based on the second last byte:
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0 : control, space
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1 : punctuation
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2 : upper-case letter, number
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3 : lower-case letter
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If the last byte is ASCII, and the second last byte is not (in a valid UTF8
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stream it will be a continuation byte, value between 128 and 191), the
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context is the same as if the second last byte was an ASCII control or space.
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If the last byte is a UTF8 lead byte (value >= 192), then the next byte will
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be a continuation byte and the context id is 2 or 3 depending on the LSB of
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the last byte and to a lesser extent on the second last byte if it is ASCII.
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If the last byte is a UTF8 continuation byte, the second last byte can be:
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- continuation byte: the next byte is probably ASCII or lead byte (assuming
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4-byte UTF8 characters are rare) and the context id is 0 or 1.
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- lead byte (192 - 207): next byte is ASCII or lead byte, context is 0 or 1
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- lead byte (208 - 255): next byte is continuation byte, context is 2 or 3
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The possible value combinations of the previous two bytes, the range of
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context ids and the type of the next byte is summarized in the table below:
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|--------\-----------------------------------------------------------------|
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| \ Last byte |
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| Second \---------------------------------------------------------------|
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| last byte \ ASCII | cont. byte | lead byte |
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| \ (0-127) | (128-191) | (192-) |
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|=============|===================|=====================|==================|
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| ASCII | next: ASCII/lead | not valid | next: cont. |
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| (0-127) | context: 4 - 63 | | context: 2 - 3 |
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|-------------|-------------------|---------------------|------------------|
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| cont. byte | next: ASCII/lead | next: ASCII/lead | next: cont. |
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| (128-191) | context: 4 - 63 | context: 0 - 1 | context: 2 - 3 |
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|-------------|-------------------|---------------------|------------------|
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| lead byte | not valid | next: ASCII/lead | not valid |
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| (192-207) | | context: 0 - 1 | |
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|-------------|-------------------|---------------------|------------------|
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| lead byte | not valid | next: cont. | not valid |
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| (208-) | | context: 2 - 3 | |
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|-------------|-------------------|---------------------|------------------|
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*/
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#ifndef BROTLI_COMMON_CONTEXT_H_
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#define BROTLI_COMMON_CONTEXT_H_
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#include "../types.h"
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typedef enum ContextType {
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CONTEXT_LSB6 = 0,
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CONTEXT_MSB6 = 1,
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CONTEXT_UTF8 = 2,
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CONTEXT_SIGNED = 3
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} ContextType;
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/* Common context lookup table for all context modes. */
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static const uint8_t kContextLookup[2048] = {
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/* CONTEXT_LSB6, last byte. */
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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/* CONTEXT_LSB6, second last byte, */
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* CONTEXT_MSB6, last byte. */
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0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
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4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7,
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8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11,
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12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15,
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16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19,
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20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23,
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24, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27,
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28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 30, 31, 31, 31, 31,
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32, 32, 32, 32, 33, 33, 33, 33, 34, 34, 34, 34, 35, 35, 35, 35,
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||||
36, 36, 36, 36, 37, 37, 37, 37, 38, 38, 38, 38, 39, 39, 39, 39,
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40, 40, 40, 40, 41, 41, 41, 41, 42, 42, 42, 42, 43, 43, 43, 43,
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44, 44, 44, 44, 45, 45, 45, 45, 46, 46, 46, 46, 47, 47, 47, 47,
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48, 48, 48, 48, 49, 49, 49, 49, 50, 50, 50, 50, 51, 51, 51, 51,
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52, 52, 52, 52, 53, 53, 53, 53, 54, 54, 54, 54, 55, 55, 55, 55,
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56, 56, 56, 56, 57, 57, 57, 57, 58, 58, 58, 58, 59, 59, 59, 59,
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60, 60, 60, 60, 61, 61, 61, 61, 62, 62, 62, 62, 63, 63, 63, 63,
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/* CONTEXT_MSB6, second last byte, */
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
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/* CONTEXT_UTF8, last byte. */
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/* ASCII range. */
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0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 4, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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||||
8, 12, 16, 12, 12, 20, 12, 16, 24, 28, 12, 12, 32, 12, 36, 12,
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44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 32, 32, 24, 40, 28, 12,
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12, 48, 52, 52, 52, 48, 52, 52, 52, 48, 52, 52, 52, 52, 52, 48,
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||||
52, 52, 52, 52, 52, 48, 52, 52, 52, 52, 52, 24, 12, 28, 12, 12,
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||||
12, 56, 60, 60, 60, 56, 60, 60, 60, 56, 60, 60, 60, 60, 60, 56,
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||||
60, 60, 60, 60, 60, 56, 60, 60, 60, 60, 60, 24, 12, 28, 12, 0,
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/* UTF8 continuation byte range. */
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
||||
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
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/* UTF8 lead byte range. */
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2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
|
||||
2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
|
||||
2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
|
||||
2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
|
||||
|
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/* CONTEXT_UTF8 second last byte. */
|
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/* ASCII range. */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||||
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1,
|
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||||
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1,
|
||||
1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
|
||||
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 0,
|
||||
/* UTF8 continuation byte range. */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
/* UTF8 lead byte range. */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||||
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||||
|
||||
/* CONTEXT_SIGNED, last byte, same as the above values shifted by 3 bits. */
|
||||
0, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||||
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
|
||||
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
|
||||
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
|
||||
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
|
||||
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
|
||||
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
|
||||
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
|
||||
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
|
||||
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
|
||||
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
|
||||
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
|
||||
40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
|
||||
40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
|
||||
40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
|
||||
48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 56,
|
||||
|
||||
/* CONTEXT_SIGNED, second last byte. */
|
||||
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
||||
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||||
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||||
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
||||
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
|
||||
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
|
||||
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
|
||||
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
|
||||
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
|
||||
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
|
||||
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
|
||||
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
|
||||
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
|
||||
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
|
||||
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
|
||||
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7,
|
||||
};
|
||||
|
||||
typedef const uint8_t* ContextLut;
|
||||
|
||||
/* typeof(MODE) == ContextType; returns ContextLut */
|
||||
#define BROTLI_CONTEXT_LUT(MODE) (&kContextLookup[(MODE) << 9])
|
||||
|
||||
/* typeof(LUT) == ContextLut */
|
||||
#define BROTLI_CONTEXT(P1, P2, LUT) ((LUT)[P1] | ((LUT) + 256)[P2])
|
||||
|
||||
#endif /* BROTLI_COMMON_CONTEXT_H_ */
|
||||
@@ -27,13 +27,13 @@ typedef struct BrotliDictionary {
|
||||
* Dictionary consists of words with length of [4..24] bytes.
|
||||
* Values at [0..3] and [25..31] indices should not be addressed.
|
||||
*/
|
||||
const uint8_t size_bits_by_length[32];
|
||||
uint8_t size_bits_by_length[32];
|
||||
|
||||
/* assert(offset[i + 1] == offset[i] + (bits[i] ? (i << bits[i]) : 0)) */
|
||||
const uint32_t offsets_by_length[32];
|
||||
uint32_t offsets_by_length[32];
|
||||
|
||||
/* assert(data_size == offsets_by_length[31]) */
|
||||
const size_t data_size;
|
||||
size_t data_size;
|
||||
|
||||
/* Data array is not bound, and should obey to size_bits_by_length values.
|
||||
Specified size matches default (RFC 7932) dictionary. Its size is
|
||||
@@ -41,7 +41,7 @@ typedef struct BrotliDictionary {
|
||||
const uint8_t* data;
|
||||
} BrotliDictionary;
|
||||
|
||||
BROTLI_COMMON_API extern const BrotliDictionary* BrotliGetDictionary(void);
|
||||
BROTLI_COMMON_API const BrotliDictionary* BrotliGetDictionary(void);
|
||||
|
||||
/**
|
||||
* Sets dictionary data.
|
||||
|
||||
558
C/brotli/common/platform.h
Normal file
558
C/brotli/common/platform.h
Normal file
@@ -0,0 +1,558 @@
|
||||
/* Copyright 2016 Google Inc. All Rights Reserved.
|
||||
|
||||
Distributed under MIT license.
|
||||
See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
|
||||
*/
|
||||
|
||||
/* Macros for compiler / platform specific features and build options.
|
||||
|
||||
Build options are:
|
||||
* BROTLI_BUILD_32_BIT disables 64-bit optimizations
|
||||
* BROTLI_BUILD_64_BIT forces to use 64-bit optimizations
|
||||
* BROTLI_BUILD_BIG_ENDIAN forces to use big-endian optimizations
|
||||
* BROTLI_BUILD_ENDIAN_NEUTRAL disables endian-aware optimizations
|
||||
* BROTLI_BUILD_LITTLE_ENDIAN forces to use little-endian optimizations
|
||||
* BROTLI_BUILD_PORTABLE disables dangerous optimizations, like unaligned
|
||||
read and overlapping memcpy; this reduces decompression speed by 5%
|
||||
* BROTLI_BUILD_NO_RBIT disables "rbit" optimization for ARM CPUs
|
||||
* BROTLI_DEBUG dumps file name and line number when decoder detects stream
|
||||
or memory error
|
||||
* BROTLI_ENABLE_LOG enables asserts and dumps various state information
|
||||
*/
|
||||
|
||||
#ifndef BROTLI_COMMON_PLATFORM_H_
|
||||
#define BROTLI_COMMON_PLATFORM_H_
|
||||
|
||||
#include <string.h> /* memcpy */
|
||||
#include <stdlib.h> /* malloc, free */
|
||||
|
||||
#include "../port.h"
|
||||
#include "../types.h"
|
||||
|
||||
#if defined(OS_LINUX) || defined(OS_CYGWIN)
|
||||
#include <endian.h>
|
||||
#elif defined(OS_FREEBSD)
|
||||
#include <machine/endian.h>
|
||||
#elif defined(OS_MACOSX)
|
||||
#include <machine/endian.h>
|
||||
/* Let's try and follow the Linux convention */
|
||||
#define BROTLI_X_BYTE_ORDER BYTE_ORDER
|
||||
#define BROTLI_X_LITTLE_ENDIAN LITTLE_ENDIAN
|
||||
#define BROTLI_X_BIG_ENDIAN BIG_ENDIAN
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_ENABLE_LOG) || defined(BROTLI_DEBUG)
|
||||
#include <assert.h>
|
||||
#include <stdio.h>
|
||||
#endif
|
||||
|
||||
/* The following macros were borrowed from https://github.com/nemequ/hedley
|
||||
* with permission of original author - Evan Nemerson <evan@nemerson.com> */
|
||||
|
||||
/* >>> >>> >>> hedley macros */
|
||||
|
||||
/* Define "BROTLI_PREDICT_TRUE" and "BROTLI_PREDICT_FALSE" macros for capable
|
||||
compilers.
|
||||
|
||||
To apply compiler hint, enclose the branching condition into macros, like this:
|
||||
|
||||
if (BROTLI_PREDICT_TRUE(zero == 0)) {
|
||||
// main execution path
|
||||
} else {
|
||||
// compiler should place this code outside of main execution path
|
||||
}
|
||||
|
||||
OR:
|
||||
|
||||
if (BROTLI_PREDICT_FALSE(something_rare_or_unexpected_happens)) {
|
||||
// compiler should place this code outside of main execution path
|
||||
}
|
||||
|
||||
*/
|
||||
#if BROTLI_GNUC_HAS_BUILTIN(__builtin_expect, 3, 0, 0) || \
|
||||
BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \
|
||||
BROTLI_SUNPRO_VERSION_CHECK(5, 12, 0) || \
|
||||
BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \
|
||||
BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \
|
||||
BROTLI_TI_VERSION_CHECK(7, 3, 0) || \
|
||||
BROTLI_TINYC_VERSION_CHECK(0, 9, 27)
|
||||
#define BROTLI_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
|
||||
#define BROTLI_PREDICT_FALSE(x) (__builtin_expect(x, 0))
|
||||
#else
|
||||
#define BROTLI_PREDICT_FALSE(x) (x)
|
||||
#define BROTLI_PREDICT_TRUE(x) (x)
|
||||
#endif
|
||||
|
||||
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
|
||||
!defined(__cplusplus)
|
||||
#define BROTLI_RESTRICT restrict
|
||||
#elif BROTLI_GNUC_VERSION_CHECK(3, 1, 0) || \
|
||||
BROTLI_MSVC_VERSION_CHECK(14, 0, 0) || \
|
||||
BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \
|
||||
BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \
|
||||
BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \
|
||||
BROTLI_PGI_VERSION_CHECK(17, 10, 0) || \
|
||||
BROTLI_TI_VERSION_CHECK(8, 0, 0) || \
|
||||
BROTLI_IAR_VERSION_CHECK(8, 0, 0) || \
|
||||
(BROTLI_SUNPRO_VERSION_CHECK(5, 14, 0) && defined(__cplusplus))
|
||||
#define BROTLI_RESTRICT __restrict
|
||||
#elif BROTLI_SUNPRO_VERSION_CHECK(5, 3, 0) && !defined(__cplusplus)
|
||||
#define BROTLI_RESTRICT _Restrict
|
||||
#else
|
||||
#define BROTLI_RESTRICT
|
||||
#endif
|
||||
|
||||
#if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || \
|
||||
(defined(__cplusplus) && (__cplusplus >= 199711L))
|
||||
#define BROTLI_MAYBE_INLINE inline
|
||||
#elif defined(__GNUC_STDC_INLINE__) || defined(__GNUC_GNU_INLINE__) || \
|
||||
BROTLI_ARM_VERSION_CHECK(6, 2, 0)
|
||||
#define BROTLI_MAYBE_INLINE __inline__
|
||||
#elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0) || \
|
||||
BROTLI_ARM_VERSION_CHECK(4, 1, 0) || BROTLI_TI_VERSION_CHECK(8, 0, 0)
|
||||
#define BROTLI_MAYBE_INLINE __inline
|
||||
#else
|
||||
#define BROTLI_MAYBE_INLINE
|
||||
#endif
|
||||
|
||||
#if BROTLI_GNUC_HAS_ATTRIBUTE(always_inline, 4, 0, 0) || \
|
||||
BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \
|
||||
BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \
|
||||
BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \
|
||||
BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \
|
||||
BROTLI_TI_VERSION_CHECK(8, 0, 0) || \
|
||||
(BROTLI_TI_VERSION_CHECK(7, 3, 0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__))
|
||||
#define BROTLI_INLINE BROTLI_MAYBE_INLINE __attribute__((__always_inline__))
|
||||
#elif BROTLI_MSVC_VERSION_CHECK(12, 0, 0)
|
||||
#define BROTLI_INLINE BROTLI_MAYBE_INLINE __forceinline
|
||||
#elif BROTLI_TI_VERSION_CHECK(7, 0, 0) && defined(__cplusplus)
|
||||
#define BROTLI_INLINE BROTLI_MAYBE_INLINE _Pragma("FUNC_ALWAYS_INLINE;")
|
||||
#elif BROTLI_IAR_VERSION_CHECK(8, 0, 0)
|
||||
#define BROTLI_INLINE BROTLI_MAYBE_INLINE _Pragma("inline=forced")
|
||||
#else
|
||||
#define BROTLI_INLINE BROTLI_MAYBE_INLINE
|
||||
#endif
|
||||
|
||||
#if BROTLI_GNUC_HAS_ATTRIBUTE(noinline, 4, 0, 0) || \
|
||||
BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \
|
||||
BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \
|
||||
BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \
|
||||
BROTLI_IBM_VERSION_CHECK(10, 1, 0) || \
|
||||
BROTLI_TI_VERSION_CHECK(8, 0, 0) || \
|
||||
(BROTLI_TI_VERSION_CHECK(7, 3, 0) && defined(__TI_GNU_ATTRIBUTE_SUPPORT__))
|
||||
#define BROTLI_NOINLINE __attribute__((__noinline__))
|
||||
#elif BROTLI_MSVC_VERSION_CHECK(13, 10, 0)
|
||||
#define BROTLI_NOINLINE __declspec(noinline)
|
||||
#elif BROTLI_PGI_VERSION_CHECK(10, 2, 0)
|
||||
#define BROTLI_NOINLINE _Pragma("noinline")
|
||||
#elif BROTLI_TI_VERSION_CHECK(6, 0, 0) && defined(__cplusplus)
|
||||
#define BROTLI_NOINLINE _Pragma("FUNC_CANNOT_INLINE;")
|
||||
#elif BROTLI_IAR_VERSION_CHECK(8, 0, 0)
|
||||
#define BROTLI_NOINLINE _Pragma("inline=never")
|
||||
#else
|
||||
#define BROTLI_NOINLINE
|
||||
#endif
|
||||
|
||||
/* BROTLI_INTERNAL could be defined to override visibility, e.g. for tests. */
|
||||
#if !defined(BROTLI_INTERNAL)
|
||||
#if defined(_WIN32) || defined(__CYGWIN__)
|
||||
#define BROTLI_INTERNAL
|
||||
#elif BROTLI_GNUC_VERSION_CHECK(3, 3, 0) || \
|
||||
BROTLI_TI_VERSION_CHECK(8, 0, 0) || \
|
||||
BROTLI_INTEL_VERSION_CHECK(16, 0, 0) || \
|
||||
BROTLI_ARM_VERSION_CHECK(4, 1, 0) || \
|
||||
BROTLI_IBM_VERSION_CHECK(13, 1, 0) || \
|
||||
BROTLI_SUNPRO_VERSION_CHECK(5, 11, 0) || \
|
||||
(BROTLI_TI_VERSION_CHECK(7, 3, 0) && \
|
||||
defined(__TI_GNU_ATTRIBUTE_SUPPORT__) && defined(__TI_EABI__))
|
||||
#define BROTLI_INTERNAL __attribute__ ((visibility ("hidden")))
|
||||
#else
|
||||
#define BROTLI_INTERNAL
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* <<< <<< <<< end of hedley macros. */
|
||||
|
||||
#if BROTLI_GNUC_HAS_ATTRIBUTE(unused, 2, 7, 0) || \
|
||||
BROTLI_INTEL_VERSION_CHECK(16, 0, 0)
|
||||
#define BROTLI_UNUSED_FUNCTION static BROTLI_INLINE __attribute__ ((unused))
|
||||
#else
|
||||
#define BROTLI_UNUSED_FUNCTION static BROTLI_INLINE
|
||||
#endif
|
||||
|
||||
#if (defined(__ARM_ARCH) && (__ARM_ARCH == 7)) || \
|
||||
(defined(M_ARM) && (M_ARM == 7))
|
||||
#define BROTLI_TARGET_ARMV7
|
||||
#endif /* ARMv7 */
|
||||
|
||||
#if (defined(__ARM_ARCH) && (__ARM_ARCH == 8)) || \
|
||||
defined(__aarch64__) || defined(__ARM64_ARCH_8__)
|
||||
#define BROTLI_TARGET_ARMV8_ANY
|
||||
|
||||
#if defined(__ARM_32BIT_STATE)
|
||||
#define BROTLI_TARGET_ARMV8_32
|
||||
#elif defined(__ARM_64BIT_STATE)
|
||||
#define BROTLI_TARGET_ARMV8_64
|
||||
#endif
|
||||
|
||||
#endif /* ARMv8 */
|
||||
|
||||
#if defined(__i386) || defined(_M_IX86)
|
||||
#define BROTLI_TARGET_X86
|
||||
#endif
|
||||
|
||||
#if defined(__x86_64__) || defined(_M_X64)
|
||||
#define BROTLI_TARGET_X64
|
||||
#endif
|
||||
|
||||
#if defined(__PPC64__)
|
||||
#define BROTLI_TARGET_POWERPC64
|
||||
#endif
|
||||
|
||||
#if defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64
|
||||
#define BROTLI_TARGET_RISCV64
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_BUILD_64_BIT)
|
||||
#define BROTLI_64_BITS 1
|
||||
#elif defined(BROTLI_BUILD_32_BIT)
|
||||
#define BROTLI_64_BITS 0
|
||||
#elif defined(BROTLI_TARGET_X64) || defined(BROTLI_TARGET_ARMV8_64) || \
|
||||
defined(BROTLI_TARGET_POWERPC64) || defined(BROTLI_TARGET_RISCV64)
|
||||
#define BROTLI_64_BITS 1
|
||||
#else
|
||||
#define BROTLI_64_BITS 0
|
||||
#endif
|
||||
|
||||
#if (BROTLI_64_BITS)
|
||||
#define brotli_reg_t uint64_t
|
||||
#else
|
||||
#define brotli_reg_t uint32_t
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_BUILD_BIG_ENDIAN)
|
||||
#define BROTLI_BIG_ENDIAN 1
|
||||
#elif defined(BROTLI_BUILD_LITTLE_ENDIAN)
|
||||
#define BROTLI_LITTLE_ENDIAN 1
|
||||
#elif defined(BROTLI_BUILD_ENDIAN_NEUTRAL)
|
||||
/* Just break elif chain. */
|
||||
#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
|
||||
#define BROTLI_LITTLE_ENDIAN 1
|
||||
#elif defined(_WIN32) || defined(BROTLI_TARGET_X64)
|
||||
/* Win32 & x64 can currently always be assumed to be little endian */
|
||||
#define BROTLI_LITTLE_ENDIAN 1
|
||||
#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
|
||||
#define BROTLI_BIG_ENDIAN 1
|
||||
#elif defined(BROTLI_X_BYTE_ORDER)
|
||||
#if BROTLI_X_BYTE_ORDER == BROTLI_X_LITTLE_ENDIAN
|
||||
#define BROTLI_LITTLE_ENDIAN 1
|
||||
#elif BROTLI_X_BYTE_ORDER == BROTLI_X_BIG_ENDIAN
|
||||
#define BROTLI_BIG_ENDIAN 1
|
||||
#endif
|
||||
#endif /* BROTLI_X_BYTE_ORDER */
|
||||
|
||||
#if !defined(BROTLI_LITTLE_ENDIAN)
|
||||
#define BROTLI_LITTLE_ENDIAN 0
|
||||
#endif
|
||||
|
||||
#if !defined(BROTLI_BIG_ENDIAN)
|
||||
#define BROTLI_BIG_ENDIAN 0
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_X_BYTE_ORDER)
|
||||
#undef BROTLI_X_BYTE_ORDER
|
||||
#undef BROTLI_X_LITTLE_ENDIAN
|
||||
#undef BROTLI_X_BIG_ENDIAN
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_BUILD_PORTABLE)
|
||||
#define BROTLI_ALIGNED_READ (!!1)
|
||||
#elif defined(BROTLI_TARGET_X86) || defined(BROTLI_TARGET_X64) || \
|
||||
defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY) || \
|
||||
defined(BROTLI_TARGET_RISCV64)
|
||||
/* Allow unaligned read only for white-listed CPUs. */
|
||||
#define BROTLI_ALIGNED_READ (!!0)
|
||||
#else
|
||||
#define BROTLI_ALIGNED_READ (!!1)
|
||||
#endif
|
||||
|
||||
#if BROTLI_ALIGNED_READ
|
||||
/* Portable unaligned memory access: read / write values via memcpy. */
|
||||
static BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) {
|
||||
uint16_t t;
|
||||
memcpy(&t, p, sizeof t);
|
||||
return t;
|
||||
}
|
||||
static BROTLI_INLINE uint32_t BrotliUnalignedRead32(const void* p) {
|
||||
uint32_t t;
|
||||
memcpy(&t, p, sizeof t);
|
||||
return t;
|
||||
}
|
||||
static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {
|
||||
uint64_t t;
|
||||
memcpy(&t, p, sizeof t);
|
||||
return t;
|
||||
}
|
||||
static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
|
||||
memcpy(p, &v, sizeof v);
|
||||
}
|
||||
#else /* BROTLI_ALIGNED_READ */
|
||||
/* Unaligned memory access is allowed: just cast pointer to requested type. */
|
||||
#if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER) || \
|
||||
defined(MEMORY_SANITIZER)
|
||||
/* Consider we have an unaligned load/store of 4 bytes from address 0x...05.
|
||||
AddressSanitizer will treat it as a 3-byte access to the range 05:07 and
|
||||
will miss a bug if 08 is the first unaddressable byte.
|
||||
ThreadSanitizer will also treat this as a 3-byte access to 05:07 and will
|
||||
miss a race between this access and some other accesses to 08.
|
||||
MemorySanitizer will correctly propagate the shadow on unaligned stores
|
||||
and correctly report bugs on unaligned loads, but it may not properly
|
||||
update and report the origin of the uninitialized memory.
|
||||
For all three tools, replacing an unaligned access with a tool-specific
|
||||
callback solves the problem. */
|
||||
#if defined(__cplusplus)
|
||||
extern "C" {
|
||||
#endif /* __cplusplus */
|
||||
uint16_t __sanitizer_unaligned_load16(const void* p);
|
||||
uint32_t __sanitizer_unaligned_load32(const void* p);
|
||||
uint64_t __sanitizer_unaligned_load64(const void* p);
|
||||
void __sanitizer_unaligned_store64(void* p, uint64_t v);
|
||||
#if defined(__cplusplus)
|
||||
} /* extern "C" */
|
||||
#endif /* __cplusplus */
|
||||
#define BrotliUnalignedRead16 __sanitizer_unaligned_load16
|
||||
#define BrotliUnalignedRead32 __sanitizer_unaligned_load32
|
||||
#define BrotliUnalignedRead64 __sanitizer_unaligned_load64
|
||||
#define BrotliUnalignedWrite64 __sanitizer_unaligned_store64
|
||||
#else
|
||||
static BROTLI_INLINE uint16_t BrotliUnalignedRead16(const void* p) {
|
||||
return *(const uint16_t*)p;
|
||||
}
|
||||
static BROTLI_INLINE uint32_t BrotliUnalignedRead32(const void* p) {
|
||||
return *(const uint32_t*)p;
|
||||
}
|
||||
#if (BROTLI_64_BITS)
|
||||
static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {
|
||||
return *(const uint64_t*)p;
|
||||
}
|
||||
static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
|
||||
*(uint64_t*)p = v;
|
||||
}
|
||||
#else /* BROTLI_64_BITS */
|
||||
/* Avoid emitting LDRD / STRD, which require properly aligned address. */
|
||||
/* If __attribute__(aligned) is available, use that. Otherwise, memcpy. */
|
||||
|
||||
#if BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0)
|
||||
typedef __attribute__((aligned(1))) uint64_t brotli_unaligned_uint64_t;
|
||||
|
||||
static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {
|
||||
return (uint64_t) ((brotli_unaligned_uint64_t*) p)[0];
|
||||
}
|
||||
static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
|
||||
brotli_unaligned_uint64_t* dwords = (brotli_unaligned_uint64_t*) p;
|
||||
dwords[0] = (brotli_unaligned_uint64_t) v;
|
||||
}
|
||||
#else /* BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0) */
|
||||
static BROTLI_INLINE uint64_t BrotliUnalignedRead64(const void* p) {
|
||||
uint64_t v;
|
||||
memcpy(&v, p, sizeof(uint64_t));
|
||||
return v;
|
||||
}
|
||||
|
||||
static BROTLI_INLINE void BrotliUnalignedWrite64(void* p, uint64_t v) {
|
||||
memcpy(p, &v, sizeof(uint64_t));
|
||||
}
|
||||
#endif /* BROTLI_GNUC_HAS_ATTRIBUTE(aligned, 2, 7, 0) */
|
||||
#endif /* BROTLI_64_BITS */
|
||||
#endif /* ASAN / TSAN / MSAN */
|
||||
#endif /* BROTLI_ALIGNED_READ */
|
||||
|
||||
#if BROTLI_LITTLE_ENDIAN
|
||||
/* Straight endianness. Just read / write values. */
|
||||
#define BROTLI_UNALIGNED_LOAD16LE BrotliUnalignedRead16
|
||||
#define BROTLI_UNALIGNED_LOAD32LE BrotliUnalignedRead32
|
||||
#define BROTLI_UNALIGNED_LOAD64LE BrotliUnalignedRead64
|
||||
#define BROTLI_UNALIGNED_STORE64LE BrotliUnalignedWrite64
|
||||
#elif BROTLI_BIG_ENDIAN /* BROTLI_LITTLE_ENDIAN */
|
||||
/* Explain compiler to byte-swap values. */
|
||||
#define BROTLI_BSWAP16_(V) ((uint16_t)( \
|
||||
(((V) & 0xFFU) << 8) | \
|
||||
(((V) >> 8) & 0xFFU)))
|
||||
static BROTLI_INLINE uint16_t BROTLI_UNALIGNED_LOAD16LE(const void* p) {
|
||||
uint16_t value = BrotliUnalignedRead16(p);
|
||||
return BROTLI_BSWAP16_(value);
|
||||
}
|
||||
#define BROTLI_BSWAP32_(V) ( \
|
||||
(((V) & 0xFFU) << 24) | (((V) & 0xFF00U) << 8) | \
|
||||
(((V) >> 8) & 0xFF00U) | (((V) >> 24) & 0xFFU))
|
||||
static BROTLI_INLINE uint32_t BROTLI_UNALIGNED_LOAD32LE(const void* p) {
|
||||
uint32_t value = BrotliUnalignedRead32(p);
|
||||
return BROTLI_BSWAP32_(value);
|
||||
}
|
||||
#define BROTLI_BSWAP64_(V) ( \
|
||||
(((V) & 0xFFU) << 56) | (((V) & 0xFF00U) << 40) | \
|
||||
(((V) & 0xFF0000U) << 24) | (((V) & 0xFF000000U) << 8) | \
|
||||
(((V) >> 8) & 0xFF000000U) | (((V) >> 24) & 0xFF0000U) | \
|
||||
(((V) >> 40) & 0xFF00U) | (((V) >> 56) & 0xFFU))
|
||||
static BROTLI_INLINE uint64_t BROTLI_UNALIGNED_LOAD64LE(const void* p) {
|
||||
uint64_t value = BrotliUnalignedRead64(p);
|
||||
return BROTLI_BSWAP64_(value);
|
||||
}
|
||||
static BROTLI_INLINE void BROTLI_UNALIGNED_STORE64LE(void* p, uint64_t v) {
|
||||
uint64_t value = BROTLI_BSWAP64_(v);
|
||||
BrotliUnalignedWrite64(p, value);
|
||||
}
|
||||
#else /* BROTLI_LITTLE_ENDIAN */
|
||||
/* Read / store values byte-wise; hopefully compiler will understand. */
|
||||
static BROTLI_INLINE uint16_t BROTLI_UNALIGNED_LOAD16LE(const void* p) {
|
||||
const uint8_t* in = (const uint8_t*)p;
|
||||
return (uint16_t)(in[0] | (in[1] << 8));
|
||||
}
|
||||
static BROTLI_INLINE uint32_t BROTLI_UNALIGNED_LOAD32LE(const void* p) {
|
||||
const uint8_t* in = (const uint8_t*)p;
|
||||
uint32_t value = (uint32_t)(in[0]);
|
||||
value |= (uint32_t)(in[1]) << 8;
|
||||
value |= (uint32_t)(in[2]) << 16;
|
||||
value |= (uint32_t)(in[3]) << 24;
|
||||
return value;
|
||||
}
|
||||
static BROTLI_INLINE uint64_t BROTLI_UNALIGNED_LOAD64LE(const void* p) {
|
||||
const uint8_t* in = (const uint8_t*)p;
|
||||
uint64_t value = (uint64_t)(in[0]);
|
||||
value |= (uint64_t)(in[1]) << 8;
|
||||
value |= (uint64_t)(in[2]) << 16;
|
||||
value |= (uint64_t)(in[3]) << 24;
|
||||
value |= (uint64_t)(in[4]) << 32;
|
||||
value |= (uint64_t)(in[5]) << 40;
|
||||
value |= (uint64_t)(in[6]) << 48;
|
||||
value |= (uint64_t)(in[7]) << 56;
|
||||
return value;
|
||||
}
|
||||
static BROTLI_INLINE void BROTLI_UNALIGNED_STORE64LE(void* p, uint64_t v) {
|
||||
uint8_t* out = (uint8_t*)p;
|
||||
out[0] = (uint8_t)v;
|
||||
out[1] = (uint8_t)(v >> 8);
|
||||
out[2] = (uint8_t)(v >> 16);
|
||||
out[3] = (uint8_t)(v >> 24);
|
||||
out[4] = (uint8_t)(v >> 32);
|
||||
out[5] = (uint8_t)(v >> 40);
|
||||
out[6] = (uint8_t)(v >> 48);
|
||||
out[7] = (uint8_t)(v >> 56);
|
||||
}
|
||||
#endif /* BROTLI_LITTLE_ENDIAN */
|
||||
|
||||
/* BROTLI_IS_CONSTANT macros returns true for compile-time constants. */
|
||||
#if BROTLI_GNUC_HAS_BUILTIN(__builtin_constant_p, 3, 0, 1) || \
|
||||
BROTLI_INTEL_VERSION_CHECK(16, 0, 0)
|
||||
#define BROTLI_IS_CONSTANT(x) (!!__builtin_constant_p(x))
|
||||
#else
|
||||
#define BROTLI_IS_CONSTANT(x) (!!0)
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY)
|
||||
#define BROTLI_HAS_UBFX (!!1)
|
||||
#else
|
||||
#define BROTLI_HAS_UBFX (!!0)
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_ENABLE_LOG)
|
||||
#define BROTLI_DCHECK(x) assert(x)
|
||||
#define BROTLI_LOG(x) printf x
|
||||
#else
|
||||
#define BROTLI_DCHECK(x)
|
||||
#define BROTLI_LOG(x)
|
||||
#endif
|
||||
|
||||
#if defined(BROTLI_DEBUG) || defined(BROTLI_ENABLE_LOG)
|
||||
static BROTLI_INLINE void BrotliDump(const char* f, int l, const char* fn) {
|
||||
fprintf(stderr, "%s:%d (%s)\n", f, l, fn);
|
||||
fflush(stderr);
|
||||
}
|
||||
#define BROTLI_DUMP() BrotliDump(__FILE__, __LINE__, __FUNCTION__)
|
||||
#else
|
||||
#define BROTLI_DUMP() (void)(0)
|
||||
#endif
|
||||
|
||||
/* TODO: add appropriate icc/sunpro/arm/ibm/ti checks. */
|
||||
#if (BROTLI_GNUC_VERSION_CHECK(3, 0, 0) || defined(__llvm__)) && \
|
||||
!defined(BROTLI_BUILD_NO_RBIT)
|
||||
#if defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8_ANY)
|
||||
/* TODO: detect ARMv6T2 and enable this code for it. */
|
||||
static BROTLI_INLINE brotli_reg_t BrotliRBit(brotli_reg_t input) {
|
||||
brotli_reg_t output;
|
||||
__asm__("rbit %0, %1\n" : "=r"(output) : "r"(input));
|
||||
return output;
|
||||
}
|
||||
#define BROTLI_RBIT(x) BrotliRBit(x)
|
||||
#endif /* armv7 / armv8 */
|
||||
#endif /* gcc || clang */
|
||||
#if !defined(BROTLI_RBIT)
|
||||
static BROTLI_INLINE void BrotliRBit(void) { /* Should break build if used. */ }
|
||||
#endif /* BROTLI_RBIT */
|
||||
|
||||
#define BROTLI_REPEAT(N, X) { \
|
||||
if ((N & 1) != 0) {X;} \
|
||||
if ((N & 2) != 0) {X; X;} \
|
||||
if ((N & 4) != 0) {X; X; X; X;} \
|
||||
}
|
||||
|
||||
#define BROTLI_UNUSED(X) (void)(X)
|
||||
|
||||
#define BROTLI_MIN_MAX(T) \
|
||||
static BROTLI_INLINE T brotli_min_ ## T (T a, T b) { return a < b ? a : b; } \
|
||||
static BROTLI_INLINE T brotli_max_ ## T (T a, T b) { return a > b ? a : b; }
|
||||
BROTLI_MIN_MAX(double) BROTLI_MIN_MAX(float) BROTLI_MIN_MAX(int)
|
||||
BROTLI_MIN_MAX(size_t) BROTLI_MIN_MAX(uint32_t) BROTLI_MIN_MAX(uint8_t)
|
||||
#undef BROTLI_MIN_MAX
|
||||
#define BROTLI_MIN(T, A, B) (brotli_min_ ## T((A), (B)))
|
||||
#define BROTLI_MAX(T, A, B) (brotli_max_ ## T((A), (B)))
|
||||
|
||||
#define BROTLI_SWAP(T, A, I, J) { \
|
||||
T __brotli_swap_tmp = (A)[(I)]; \
|
||||
(A)[(I)] = (A)[(J)]; \
|
||||
(A)[(J)] = __brotli_swap_tmp; \
|
||||
}
|
||||
|
||||
/* Default brotli_alloc_func */
|
||||
static void* BrotliDefaultAllocFunc(void* opaque, size_t size) {
|
||||
BROTLI_UNUSED(opaque);
|
||||
return malloc(size);
|
||||
}
|
||||
|
||||
/* Default brotli_free_func */
|
||||
static void BrotliDefaultFreeFunc(void* opaque, void* address) {
|
||||
BROTLI_UNUSED(opaque);
|
||||
free(address);
|
||||
}
|
||||
|
||||
BROTLI_UNUSED_FUNCTION void BrotliSuppressUnusedFunctions(void) {
|
||||
BROTLI_UNUSED(&BrotliSuppressUnusedFunctions);
|
||||
BROTLI_UNUSED(&BrotliUnalignedRead16);
|
||||
BROTLI_UNUSED(&BrotliUnalignedRead32);
|
||||
BROTLI_UNUSED(&BrotliUnalignedRead64);
|
||||
BROTLI_UNUSED(&BrotliUnalignedWrite64);
|
||||
BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD16LE);
|
||||
BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD32LE);
|
||||
BROTLI_UNUSED(&BROTLI_UNALIGNED_LOAD64LE);
|
||||
BROTLI_UNUSED(&BROTLI_UNALIGNED_STORE64LE);
|
||||
BROTLI_UNUSED(&BrotliRBit);
|
||||
BROTLI_UNUSED(&brotli_min_double);
|
||||
BROTLI_UNUSED(&brotli_max_double);
|
||||
BROTLI_UNUSED(&brotli_min_float);
|
||||
BROTLI_UNUSED(&brotli_max_float);
|
||||
BROTLI_UNUSED(&brotli_min_int);
|
||||
BROTLI_UNUSED(&brotli_max_int);
|
||||
BROTLI_UNUSED(&brotli_min_size_t);
|
||||
BROTLI_UNUSED(&brotli_max_size_t);
|
||||
BROTLI_UNUSED(&brotli_min_uint32_t);
|
||||
BROTLI_UNUSED(&brotli_max_uint32_t);
|
||||
BROTLI_UNUSED(&brotli_min_uint8_t);
|
||||
BROTLI_UNUSED(&brotli_max_uint8_t);
|
||||
BROTLI_UNUSED(&BrotliDefaultAllocFunc);
|
||||
BROTLI_UNUSED(&BrotliDefaultFreeFunc);
|
||||
#if defined(BROTLI_DEBUG) || defined(BROTLI_ENABLE_LOG)
|
||||
BROTLI_UNUSED(&BrotliDump);
|
||||
#endif
|
||||
}
|
||||
|
||||
#endif /* BROTLI_COMMON_PLATFORM_H_ */
|
||||
80
C/brotli/common/transform.h
Normal file
80
C/brotli/common/transform.h
Normal file
@@ -0,0 +1,80 @@
|
||||
/* transforms is a part of ABI, but not API.
|
||||
|
||||
It means that there are some functions that are supposed to be in "common"
|
||||
library, but header itself is not placed into include/brotli. This way,
|
||||
aforementioned functions will be available only to brotli internals.
|
||||
*/
|
||||
|
||||
#ifndef BROTLI_COMMON_TRANSFORM_H_
|
||||
#define BROTLI_COMMON_TRANSFORM_H_
|
||||
|
||||
#include "../port.h"
|
||||
#include "../types.h"
|
||||
|
||||
#if defined(__cplusplus) || defined(c_plusplus)
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
enum BrotliWordTransformType {
|
||||
BROTLI_TRANSFORM_IDENTITY = 0,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_1 = 1,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_2 = 2,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_3 = 3,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_4 = 4,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_5 = 5,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_6 = 6,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_7 = 7,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_8 = 8,
|
||||
BROTLI_TRANSFORM_OMIT_LAST_9 = 9,
|
||||
BROTLI_TRANSFORM_UPPERCASE_FIRST = 10,
|
||||
BROTLI_TRANSFORM_UPPERCASE_ALL = 11,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_1 = 12,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_2 = 13,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_3 = 14,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_4 = 15,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_5 = 16,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_6 = 17,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_7 = 18,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_8 = 19,
|
||||
BROTLI_TRANSFORM_OMIT_FIRST_9 = 20,
|
||||
BROTLI_NUM_TRANSFORM_TYPES /* Counts transforms, not a transform itself. */
|
||||
};
|
||||
|
||||
#define BROTLI_TRANSFORMS_MAX_CUT_OFF BROTLI_TRANSFORM_OMIT_LAST_9
|
||||
|
||||
typedef struct BrotliTransforms {
|
||||
uint16_t prefix_suffix_size;
|
||||
/* Last character must be null, so prefix_suffix_size must be at least 1. */
|
||||
const uint8_t* prefix_suffix;
|
||||
const uint16_t* prefix_suffix_map;
|
||||
uint32_t num_transforms;
|
||||
/* Each entry is a [prefix_id, transform, suffix_id] triplet. */
|
||||
const uint8_t* transforms;
|
||||
/* Indices of transforms like ["", BROTLI_TRANSFORM_OMIT_LAST_#, ""].
|
||||
0-th element corresponds to ["", BROTLI_TRANSFORM_IDENTITY, ""].
|
||||
-1, if cut-off transform does not exist. */
|
||||
int16_t cutOffTransforms[BROTLI_TRANSFORMS_MAX_CUT_OFF + 1];
|
||||
} BrotliTransforms;
|
||||
|
||||
/* T is BrotliTransforms*; result is uint8_t. */
|
||||
#define BROTLI_TRANSFORM_PREFIX_ID(T, I) ((T)->transforms[((I) * 3) + 0])
|
||||
#define BROTLI_TRANSFORM_TYPE(T, I) ((T)->transforms[((I) * 3) + 1])
|
||||
#define BROTLI_TRANSFORM_SUFFIX_ID(T, I) ((T)->transforms[((I) * 3) + 2])
|
||||
|
||||
/* T is BrotliTransforms*; result is const uint8_t*. */
|
||||
#define BROTLI_TRANSFORM_PREFIX(T, I) (&(T)->prefix_suffix[ \
|
||||
(T)->prefix_suffix_map[BROTLI_TRANSFORM_PREFIX_ID(T, I)]])
|
||||
#define BROTLI_TRANSFORM_SUFFIX(T, I) (&(T)->prefix_suffix[ \
|
||||
(T)->prefix_suffix_map[BROTLI_TRANSFORM_SUFFIX_ID(T, I)]])
|
||||
|
||||
BROTLI_COMMON_API const BrotliTransforms* BrotliGetTransforms(void);
|
||||
|
||||
BROTLI_COMMON_API int BrotliTransformDictionaryWord(
|
||||
uint8_t* dst, const uint8_t* word, int len,
|
||||
const BrotliTransforms* transforms, int transform_idx);
|
||||
|
||||
#if defined(__cplusplus) || defined(c_plusplus)
|
||||
} /* extern "C" */
|
||||
#endif
|
||||
|
||||
#endif /* BROTLI_COMMON_TRANSFORM_H_ */
|
||||
@@ -14,6 +14,13 @@
|
||||
BrotliEncoderVersion methods. */
|
||||
|
||||
/* Semantic version, calculated as (MAJOR << 24) | (MINOR << 12) | PATCH */
|
||||
#define BROTLI_VERSION 0x1000001
|
||||
#define BROTLI_VERSION 0x1000006
|
||||
|
||||
/* This macro is used by build system to produce Libtool-friendly soname. See
|
||||
https://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
|
||||
*/
|
||||
|
||||
/* ABI version, calculated as (CURRENT << 24) | (REVISION << 12) | AGE */
|
||||
#define BROTLI_ABI_VERSION 0x1006000
|
||||
|
||||
#endif /* BROTLI_COMMON_VERSION_H_ */
|
||||
|
||||
Reference in New Issue
Block a user