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Standard huffman tables
This commit is contained in:
Jakub Melka
@ -20,6 +20,276 @@
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namespace pdf
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{
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static constexpr uint16_t HUFFMAN_LOW_VALUE = 0xFFFE;
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static constexpr uint16_t HUFFMAN_OOB_VALUE = 0xFFFF;
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struct PDFJBIG2HuffmanTableEntry
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{
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enum class Type : uint8_t
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{
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Standard,
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Negative,
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OutOfBand
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};
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/// Returns true, if current row represents interval (-∞, value),
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/// it means 32bit number must be read and
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bool isLowValue() const { return rangeBitLength == 0xFFFE; }
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/// Returns true, if current row represents out-of-band value
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bool isOutOfBand() const { return rangeBitLength == HUFFMAN_OOB_VALUE; }
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int32_t value; ///< Base value
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uint16_t prefixBitLength; ///< Bit length of prefix
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uint16_t rangeBitLength; ///< Bit length of additional value
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uint16_t prefix; ///< Bit prefix of the huffman code
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Type type; ///< Type of the value
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_A[] =
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{
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{ 0, 1, 4, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 16, 2, 8, 0b10, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 272, 3, 16, 0b110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 65808, 3, 32, 0b111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_B[] =
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{
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{ 0, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1, 2, 0, 0b10, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 3, 0, 0b110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 4, 3, 0b1110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 11, 5, 6, 0b11110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 0, 6, 0, 0b111111, PDFJBIG2HuffmanTableEntry::Type::OutOfBand},
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{ 75, 6, 32, 0b111110, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_C[] =
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{
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{ 0, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1, 2, 0, 0b10, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 3, 0, 0b110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 4, 3, 0b1110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 11, 5, 6, 0b11110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 0, 6, 0, 0b111110, PDFJBIG2HuffmanTableEntry::Type::OutOfBand},
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{ 75, 7, 32, 0b1111110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -257, 8, 32, 0b11111111, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ -256, 8, 8, 0b11111110, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_D[] =
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{
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{ 1, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 2, 0, 0b10, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 3, 0, 0b110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 4, 4, 3, 0b1110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 12, 5, 6, 0b11110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 76, 5, 32, 0b11111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_E[] =
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{
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{ 1, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 2, 0, 0b10, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 3, 0, 0b110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 4, 4, 3, 0b1110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 12, 5, 6, 0b11110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 76, 6, 32, 0b111110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -256, 7, 32, 0b1111111, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ -255, 7, 8, 0b1111110, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_F[] =
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{
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{ 0, 2, 7, 0b00, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 128, 3, 7, 0b010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 256, 3, 8, 0b011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -1024, 4, 9, 0b1000, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -512, 4, 8, 0b1001, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -256, 4, 7, 0b1010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -32, 4, 5, 0b1011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 512, 4, 9, 0b1100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1024, 4, 10, 0b1101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -2048, 5, 10, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -128, 5, 6, 0b11101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -64, 5, 5, 0b11110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -2049, 6, 32, 0b111110, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ 2048, 6, 32, 0b111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_G[] =
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{
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{ -512, 3, 8, 0b000, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 256, 3, 8, 0b001, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 512, 3, 9, 0b010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1024, 3, 10, 0b011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -1024, 4, 9, 0b1000, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -256, 4, 7, 0b1001, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -32, 4, 5, 0b1010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 0, 4, 5, 0b1011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 128, 4, 7, 0b1100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -1025, 5, 32, 0b11110, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ -128, 5, 6, 0b11010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -64, 5, 5, 0b11011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 32, 5, 5, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 64, 5, 6, 0b11101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2048, 5, 32, 0b11111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_H[] =
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{
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{ 0, 2, 1, 0b00, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 0, 2, 0, 0b01, PDFJBIG2HuffmanTableEntry::Type::OutOfBand},
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{ 4, 3, 4, 0b100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -1, 4, 0, 0b1010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 22, 4, 4, 0b1011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 38, 4, 5, 0b1100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 5, 0, 0b11010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 70, 5, 6, 0b11011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 134, 5, 7, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 6, 0, 0b111010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 20, 6, 1, 0b111011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 262, 6, 7, 0b111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 646, 6, 10, 0b111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -2, 7, 0, 0b1111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 390, 7, 8, 0b1111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -15, 8, 3, 0b11111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -5, 8, 1, 0b11111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -16, 9, 32, 0b111111110, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ -7, 9, 1, 0b111111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -3, 9, 0, 0b111111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1670, 9, 32, 0b111111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_I[] =
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{
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{ 0, 2, 0, 0b00, PDFJBIG2HuffmanTableEntry::Type::OutOfBand},
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{ -1, 3, 1, 0b010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1, 3, 1, 0b011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 7, 3, 5, 0b100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -3, 4, 1, 0b1010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 43, 4, 5, 0b1011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 75, 4, 6, 0b1100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 5, 1, 0b11010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 139, 5, 7, 0b11011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 267, 5, 8, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 5, 6, 1, 0b111010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 39, 6, 2, 0b111011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 523, 6, 8, 0b111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1291, 6, 11, 0b111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -5, 7, 1, 0b1111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 779, 7, 9, 0b1111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -31, 8, 4, 0b11111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -11, 8, 2, 0b11111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -32, 9, 32, 0b111111110, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ -15, 9, 2, 0b111111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -7, 9, 1, 0b111111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3339, 9, 32, 0b111111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_J[] =
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{
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{ -2, 2, 2, 0b00, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 0, 2, 0, 0b10, PDFJBIG2HuffmanTableEntry::Type::OutOfBand},
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{ 6, 2, 6, 0b01, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -3, 5, 0, 0b11000, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 5, 0, 0b11001, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 70, 5, 5, 0b11010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 6, 0, 0b110110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 102, 6, 5, 0b110111, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 134, 6, 6, 0b111000, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 198, 6, 7, 0b111001, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 326, 6, 8, 0b111010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 582, 6, 9, 0b111011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1094, 6, 10, 0b111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -21, 7, 4, 0b1111010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -4, 7, 0, 0b1111011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 4, 7, 0, 0b1111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2118, 7, 11, 0b1111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -22, 8, 32, 0b11111110, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ -5, 8, 0, 0b11111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 5, 8, 0, 0b11111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 4166, 8, 32, 0b11111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_K[] =
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{
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{ 1, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 2, 1, 0b10, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 4, 4, 0, 0b1100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 5, 4, 1, 0b1101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 7, 5, 1, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 9, 5, 2, 0b11101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 13, 6, 2, 0b111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 17, 7, 2, 0b1111010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 21, 7, 3, 0b1111011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 29, 7, 4, 0b1111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 45, 7, 5, 0b1111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 77, 7, 6, 0b1111110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 141, 7, 32, 0b1111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_L[] =
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{
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{ 1, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 2, 0, 0b10, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 3, 1, 0b110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 5, 5, 0, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 6, 5, 1, 0b11101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 8, 6, 1, 0b111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 10, 7, 0, 0b1111010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 11, 7, 1, 0b1111011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 13, 7, 2, 0b1111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 17, 7, 3, 0b1111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 25, 7, 4, 0b1111110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 41, 8, 5, 0b11111110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 73, 8, 32, 0b11111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_M[] =
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{
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{ 1, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 3, 0, 0b100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 7, 3, 3, 0b101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 4, 0, 0b1100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 5, 4, 1, 0b1101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 4, 5, 0, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 15, 6, 1, 0b111010, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 17, 6, 2, 0b111011, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 21, 6, 3, 0b111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 29, 6, 4, 0b111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 45, 6, 5, 0b111110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 77, 7, 6, 0b1111110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 141, 7, 32, 0b1111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_N[] =
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{
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{ 0, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -2, 3, 0, 0b100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -1, 3, 0, 0b101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1, 3, 0, 0b110, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 3, 0, 0b111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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static constexpr PDFJBIG2HuffmanTableEntry PDFJBIG2StandardHuffmanTable_O[] =
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{
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{ 0, 1, 0, 0b0, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -1, 3, 0, 0b100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 1, 3, 0, 0b101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -2, 4, 0, 0b1100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 2, 4, 0, 0b1101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -4, 5, 1, 0b11100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 3, 5, 1, 0b11101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -8, 6, 2, 0b111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 5, 6, 2, 0b111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ -25, 7, 32, 0b1111110, PDFJBIG2HuffmanTableEntry::Type::Negative},
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{ -24, 7, 4, 0b1111100, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 9, 7, 4, 0b1111101, PDFJBIG2HuffmanTableEntry::Type::Standard},
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{ 25, 7, 32, 0b1111111, PDFJBIG2HuffmanTableEntry::Type::Standard}
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};
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struct PDFJBIG2ArithmeticDecoderQeValue
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{
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uint32_t Qe; ///< Value of Qe
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