Package com.itextpdf.io.codec.brotli.dec
Class Decode
java.lang.Object
com.itextpdf.io.codec.brotli.dec.Decode
API for Brotli decompression.
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate static final int[]
private static final int
private static final int
private static final int
private static final int
private static final int[]
private static final int[]
private static final int[]
Static Huffman code for the code length code lengths.private static final int
private static final int
private static final int
private static final int
private static final int
private static final int
private static final int
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprivate static void
copyUncompressedData
(State state) private static void
decodeBlockTypeAndLength
(State state, int treeType) private static void
decodeCommandBlockSwitch
(State state) private static int
decodeContextMap
(int contextMapSize, byte[] contextMap, BitReader br) private static void
decodeDistanceBlockSwitch
(State state) private static void
decodeLiteralBlockSwitch
(State state) private static void
decodeMetaBlockLength
(BitReader br, State state) private static int
Decodes a number in the range [0..255], by reading 1 - 11 bits.(package private) static void
decompress
(State state) Actual decompress implementation.private static void
inverseMoveToFrontTransform
(byte[] v, int vLen) private static void
maybeReallocateRingBuffer
(State state) private static void
moveToFront
(int[] v, int index) private static int
readBlockLength
(int[] table, int offset, BitReader br) (package private) static void
readHuffmanCode
(int alphabetSize, int[] table, int offset, BitReader br) private static void
readHuffmanCodeLengths
(int[] codeLengthCodeLengths, int numSymbols, int[] codeLengths, BitReader br) private static void
private static void
readMetablockInfo
(State state) Reads next metablock header.private static int
readSymbol
(int[] table, int offset, BitReader br) Decodes the next Huffman code from bit-stream.(package private) static void
setCustomDictionary
(State state, byte[] data) private static int
translateShortCodes
(int code, int[] ringBuffer, int index) private static boolean
writeRingBuffer
(State state)
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Field Details
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DEFAULT_CODE_LENGTH
private static final int DEFAULT_CODE_LENGTH- See Also:
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CODE_LENGTH_REPEAT_CODE
private static final int CODE_LENGTH_REPEAT_CODE- See Also:
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NUM_LITERAL_CODES
private static final int NUM_LITERAL_CODES- See Also:
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NUM_INSERT_AND_COPY_CODES
private static final int NUM_INSERT_AND_COPY_CODES- See Also:
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NUM_BLOCK_LENGTH_CODES
private static final int NUM_BLOCK_LENGTH_CODES- See Also:
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LITERAL_CONTEXT_BITS
private static final int LITERAL_CONTEXT_BITS- See Also:
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DISTANCE_CONTEXT_BITS
private static final int DISTANCE_CONTEXT_BITS- See Also:
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HUFFMAN_TABLE_BITS
private static final int HUFFMAN_TABLE_BITS- See Also:
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HUFFMAN_TABLE_MASK
private static final int HUFFMAN_TABLE_MASK- See Also:
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CODE_LENGTH_CODES
private static final int CODE_LENGTH_CODES- See Also:
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CODE_LENGTH_CODE_ORDER
private static final int[] CODE_LENGTH_CODE_ORDER -
NUM_DISTANCE_SHORT_CODES
private static final int NUM_DISTANCE_SHORT_CODES- See Also:
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DISTANCE_SHORT_CODE_INDEX_OFFSET
private static final int[] DISTANCE_SHORT_CODE_INDEX_OFFSET -
DISTANCE_SHORT_CODE_VALUE_OFFSET
private static final int[] DISTANCE_SHORT_CODE_VALUE_OFFSET -
FIXED_TABLE
private static final int[] FIXED_TABLEStatic Huffman code for the code length code lengths.
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Constructor Details
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Decode
Decode()
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Method Details
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decodeVarLenUnsignedByte
Decodes a number in the range [0..255], by reading 1 - 11 bits. -
decodeMetaBlockLength
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readSymbol
Decodes the next Huffman code from bit-stream. -
readBlockLength
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translateShortCodes
private static int translateShortCodes(int code, int[] ringBuffer, int index) -
moveToFront
private static void moveToFront(int[] v, int index) -
inverseMoveToFrontTransform
private static void inverseMoveToFrontTransform(byte[] v, int vLen) -
readHuffmanCodeLengths
private static void readHuffmanCodeLengths(int[] codeLengthCodeLengths, int numSymbols, int[] codeLengths, BitReader br) -
readHuffmanCode
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decodeContextMap
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decodeBlockTypeAndLength
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decodeLiteralBlockSwitch
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decodeCommandBlockSwitch
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decodeDistanceBlockSwitch
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maybeReallocateRingBuffer
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readMetablockInfo
Reads next metablock header.- Parameters:
state
- decoding state
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readMetablockHuffmanCodesAndContextMaps
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copyUncompressedData
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writeRingBuffer
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setCustomDictionary
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decompress
Actual decompress implementation.
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