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https://github.com/Q3Rally-Team/rallyunlimited-engine.git
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211 lines
15 KiB
C
211 lines
15 KiB
C
#include "q_shared.h"
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#include "qcommon.h"
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// alternative huffman encoder and decoder, backported from uberdemotools project
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// https://github.com/mightycow/uberdemotools/blob/develop/UDT_DLL/src/message.cpp
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const uint16_t HuffmanDecoderTable[ 2048 ] =
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{
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2512, 2182, 512, 2763, 1859, 2808, 512, 2360, 1918, 1988, 512, 1803, 2158, 2358, 512, 2180,
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1798, 2053, 512, 1804, 2603, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2767, 512, 1664,
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1731, 2116, 512, 2788, 1791, 1808, 512, 1840, 2153, 1921, 512, 2708, 2723, 1549, 512, 2046,
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1893, 2717, 512, 2602, 1801, 1288, 512, 1568, 2480, 2062, 512, 1281, 2145, 2711, 512, 1543,
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1909, 2150, 512, 2077, 2338, 2762, 512, 2162, 1794, 2024, 512, 2168, 1922, 2447, 512, 2334,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2321, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2729, 512, 2633, 1791, 1919, 512, 2184, 1917, 1802, 512, 2710, 1795, 1549, 512, 2172,
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2375, 2789, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2374, 2446, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2751, 512, 2413,
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1798, 2529, 512, 1804, 2344, 1288, 512, 2404, 2156, 2786, 512, 1281, 1640, 2641, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2395, 1921, 512, 2586, 2319, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2773, 512, 1281, 2365, 2410, 512, 1543,
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1909, 2781, 512, 2097, 2411, 2740, 512, 2396, 1794, 2024, 512, 2734, 1922, 2733, 512, 2112,
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1857, 2528, 512, 2593, 2079, 1288, 512, 2648, 2143, 1908, 512, 1281, 1640, 2770, 512, 1664,
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1731, 2169, 512, 2714, 1791, 1919, 512, 2185, 1917, 1802, 512, 2398, 1795, 1549, 512, 2098,
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2801, 2361, 512, 2400, 2328, 1288, 512, 1568, 2783, 2713, 512, 1281, 1858, 1923, 512, 1543,
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2816, 2182, 512, 2497, 1859, 2397, 512, 2794, 1918, 1988, 512, 1803, 2158, 2772, 512, 2180,
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1798, 2053, 512, 1804, 2464, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2764, 512, 1664,
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1731, 2116, 512, 2620, 1791, 1808, 512, 1840, 2153, 1921, 512, 2716, 2384, 1549, 512, 2046,
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1893, 2448, 512, 2722, 1801, 1288, 512, 1568, 2472, 2062, 512, 1281, 2145, 2376, 512, 1543,
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1909, 2150, 512, 2077, 2366, 2709, 512, 2162, 1794, 2024, 512, 2168, 1922, 2735, 512, 2407,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2779, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2359, 512, 2705, 1791, 1919, 512, 2184, 1917, 1802, 512, 2642, 1795, 1549, 512, 2172,
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2394, 2645, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2450, 2771, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2585, 512, 2403,
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1798, 2619, 512, 1804, 2777, 1288, 512, 2355, 2156, 2362, 512, 1281, 1640, 2380, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2811, 1921, 512, 2402, 2601, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2719, 512, 1281, 2747, 2776, 512, 1543,
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1909, 2725, 512, 2097, 2445, 2765, 512, 2638, 1794, 2024, 512, 2444, 1922, 2774, 512, 2112,
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1857, 2727, 512, 2644, 2079, 1288, 512, 2800, 2143, 1908, 512, 1281, 1640, 2580, 512, 1664,
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1731, 2169, 512, 2646, 1791, 1919, 512, 2185, 1917, 1802, 512, 2588, 1795, 1549, 512, 2098,
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2322, 2504, 512, 2623, 2350, 1288, 512, 1568, 2323, 2721, 512, 1281, 1858, 1923, 512, 1543,
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2512, 2182, 512, 2746, 1859, 2798, 512, 2360, 1918, 1988, 512, 1803, 2158, 2358, 512, 2180,
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1798, 2053, 512, 1804, 2745, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2806, 512, 1664,
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1731, 2116, 512, 2796, 1791, 1808, 512, 1840, 2153, 1921, 512, 2582, 2761, 1549, 512, 2046,
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1893, 2793, 512, 2647, 1801, 1288, 512, 1568, 2480, 2062, 512, 1281, 2145, 2738, 512, 1543,
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1909, 2150, 512, 2077, 2338, 2715, 512, 2162, 1794, 2024, 512, 2168, 1922, 2447, 512, 2334,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2321, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2795, 512, 2750, 1791, 1919, 512, 2184, 1917, 1802, 512, 2732, 1795, 1549, 512, 2172,
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2375, 2604, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2374, 2446, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2813, 512, 2413,
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1798, 2529, 512, 1804, 2344, 1288, 512, 2404, 2156, 2743, 512, 1281, 1640, 2748, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2395, 1921, 512, 2637, 2319, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2812, 512, 1281, 2365, 2410, 512, 1543,
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1909, 2799, 512, 2097, 2411, 2802, 512, 2396, 1794, 2024, 512, 2649, 1922, 2595, 512, 2112,
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1857, 2528, 512, 2790, 2079, 1288, 512, 2634, 2143, 1908, 512, 1281, 1640, 2724, 512, 1664,
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1731, 2169, 512, 2730, 1791, 1919, 512, 2185, 1917, 1802, 512, 2398, 1795, 1549, 512, 2098,
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2605, 2361, 512, 2400, 2328, 1288, 512, 1568, 2787, 2810, 512, 1281, 1858, 1923, 512, 1543,
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2803, 2182, 512, 2497, 1859, 2397, 512, 2758, 1918, 1988, 512, 1803, 2158, 2598, 512, 2180,
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1798, 2053, 512, 1804, 2464, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2726, 512, 1664,
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1731, 2116, 512, 2583, 1791, 1808, 512, 1840, 2153, 1921, 512, 2712, 2384, 1549, 512, 2046,
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1893, 2448, 512, 2639, 1801, 1288, 512, 1568, 2472, 2062, 512, 1281, 2145, 2376, 512, 1543,
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1909, 2150, 512, 2077, 2366, 2731, 512, 2162, 1794, 2024, 512, 2168, 1922, 2766, 512, 2407,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2809, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2359, 512, 2587, 1791, 1919, 512, 2184, 1917, 1802, 512, 2643, 1795, 1549, 512, 2172,
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2394, 2635, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2450, 2749, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2778, 512, 2403,
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1798, 2791, 512, 1804, 2775, 1288, 512, 2355, 2156, 2362, 512, 1281, 1640, 2380, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2805, 1921, 512, 2402, 2741, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2769, 512, 1281, 2739, 2780, 512, 1543,
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1909, 2737, 512, 2097, 2445, 2596, 512, 2757, 1794, 2024, 512, 2444, 1922, 2599, 512, 2112,
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1857, 2804, 512, 2744, 2079, 1288, 512, 2707, 2143, 1908, 512, 1281, 1640, 2782, 512, 1664,
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1731, 2169, 512, 2742, 1791, 1919, 512, 2185, 1917, 1802, 512, 2718, 1795, 1549, 512, 2098,
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2322, 2504, 512, 2581, 2350, 1288, 512, 1568, 2323, 2597, 512, 1281, 1858, 1923, 512, 1543,
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2512, 2182, 512, 2763, 1859, 2808, 512, 2360, 1918, 1988, 512, 1803, 2158, 2358, 512, 2180,
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1798, 2053, 512, 1804, 2603, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2767, 512, 1664,
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1731, 2116, 512, 2788, 1791, 1808, 512, 1840, 2153, 1921, 512, 2708, 2723, 1549, 512, 2046,
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1893, 2717, 512, 2602, 1801, 1288, 512, 1568, 2480, 2062, 512, 1281, 2145, 2711, 512, 1543,
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1909, 2150, 512, 2077, 2338, 2762, 512, 2162, 1794, 2024, 512, 2168, 1922, 2447, 512, 2334,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2321, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2729, 512, 2633, 1791, 1919, 512, 2184, 1917, 1802, 512, 2710, 1795, 1549, 512, 2172,
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2375, 2789, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2374, 2446, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2751, 512, 2413,
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1798, 2529, 512, 1804, 2344, 1288, 512, 2404, 2156, 2786, 512, 1281, 1640, 2641, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2395, 1921, 512, 2586, 2319, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2773, 512, 1281, 2365, 2410, 512, 1543,
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1909, 2781, 512, 2097, 2411, 2740, 512, 2396, 1794, 2024, 512, 2734, 1922, 2733, 512, 2112,
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1857, 2528, 512, 2593, 2079, 1288, 512, 2648, 2143, 1908, 512, 1281, 1640, 2770, 512, 1664,
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1731, 2169, 512, 2714, 1791, 1919, 512, 2185, 1917, 1802, 512, 2398, 1795, 1549, 512, 2098,
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2801, 2361, 512, 2400, 2328, 1288, 512, 1568, 2783, 2713, 512, 1281, 1858, 1923, 512, 1543,
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3063, 2182, 512, 2497, 1859, 2397, 512, 2794, 1918, 1988, 512, 1803, 2158, 2772, 512, 2180,
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1798, 2053, 512, 1804, 2464, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2764, 512, 1664,
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1731, 2116, 512, 2620, 1791, 1808, 512, 1840, 2153, 1921, 512, 2716, 2384, 1549, 512, 2046,
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1893, 2448, 512, 2722, 1801, 1288, 512, 1568, 2472, 2062, 512, 1281, 2145, 2376, 512, 1543,
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1909, 2150, 512, 2077, 2366, 2709, 512, 2162, 1794, 2024, 512, 2168, 1922, 2735, 512, 2407,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2779, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2359, 512, 2705, 1791, 1919, 512, 2184, 1917, 1802, 512, 2642, 1795, 1549, 512, 2172,
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2394, 2645, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2450, 2771, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2585, 512, 2403,
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1798, 2619, 512, 1804, 2777, 1288, 512, 2355, 2156, 2362, 512, 1281, 1640, 2380, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2811, 1921, 512, 2402, 2601, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2719, 512, 1281, 2747, 2776, 512, 1543,
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1909, 2725, 512, 2097, 2445, 2765, 512, 2638, 1794, 2024, 512, 2444, 1922, 2774, 512, 2112,
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1857, 2727, 512, 2644, 2079, 1288, 512, 2800, 2143, 1908, 512, 1281, 1640, 2580, 512, 1664,
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1731, 2169, 512, 2646, 1791, 1919, 512, 2185, 1917, 1802, 512, 2588, 1795, 1549, 512, 2098,
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2322, 2504, 512, 2623, 2350, 1288, 512, 1568, 2323, 2721, 512, 1281, 1858, 1923, 512, 1543,
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2512, 2182, 512, 2746, 1859, 2798, 512, 2360, 1918, 1988, 512, 1803, 2158, 2358, 512, 2180,
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1798, 2053, 512, 1804, 2745, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2806, 512, 1664,
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1731, 2116, 512, 2796, 1791, 1808, 512, 1840, 2153, 1921, 512, 2582, 2761, 1549, 512, 2046,
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1893, 2793, 512, 2647, 1801, 1288, 512, 1568, 2480, 2062, 512, 1281, 2145, 2738, 512, 1543,
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1909, 2150, 512, 2077, 2338, 2715, 512, 2162, 1794, 2024, 512, 2168, 1922, 2447, 512, 2334,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2321, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2795, 512, 2750, 1791, 1919, 512, 2184, 1917, 1802, 512, 2732, 1795, 1549, 512, 2172,
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2375, 2604, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2374, 2446, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2813, 512, 2413,
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1798, 2529, 512, 1804, 2344, 1288, 512, 2404, 2156, 2743, 512, 1281, 1640, 2748, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2395, 1921, 512, 2637, 2319, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2812, 512, 1281, 2365, 2410, 512, 1543,
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1909, 2799, 512, 2097, 2411, 2802, 512, 2396, 1794, 2024, 512, 2649, 1922, 2595, 512, 2112,
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1857, 2528, 512, 2790, 2079, 1288, 512, 2634, 2143, 1908, 512, 1281, 1640, 2724, 512, 1664,
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1731, 2169, 512, 2730, 1791, 1919, 512, 2185, 1917, 1802, 512, 2398, 1795, 1549, 512, 2098,
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2605, 2361, 512, 2400, 2328, 1288, 512, 1568, 2787, 2810, 512, 1281, 1858, 1923, 512, 1543,
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2803, 2182, 512, 2497, 1859, 2397, 512, 2758, 1918, 1988, 512, 1803, 2158, 2598, 512, 2180,
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1798, 2053, 512, 1804, 2464, 1288, 512, 2166, 2285, 2167, 512, 1281, 1640, 2726, 512, 1664,
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1731, 2116, 512, 2583, 1791, 1808, 512, 1840, 2153, 1921, 512, 2712, 2384, 1549, 512, 2046,
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1893, 2448, 512, 2639, 1801, 1288, 512, 1568, 2472, 2062, 512, 1281, 2145, 2376, 512, 1543,
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1909, 2150, 512, 2077, 2366, 2731, 512, 2162, 1794, 2024, 512, 2168, 1922, 2766, 512, 2407,
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1857, 2117, 512, 2100, 2240, 1288, 512, 2186, 2809, 1908, 512, 1281, 1640, 2242, 512, 1664,
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1731, 2359, 512, 2587, 1791, 1919, 512, 2184, 1917, 1802, 512, 2643, 1795, 1549, 512, 2172,
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2394, 2635, 512, 2171, 2187, 1288, 512, 1568, 2095, 2163, 512, 1281, 1858, 1923, 512, 1543,
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2450, 2749, 512, 2181, 1859, 2160, 512, 2183, 1918, 1988, 512, 1803, 2161, 2778, 512, 2403,
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1798, 2791, 512, 1804, 2775, 1288, 512, 2355, 2156, 2362, 512, 1281, 1640, 2380, 512, 1664,
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1731, 2052, 512, 2170, 1791, 1808, 512, 1840, 2805, 1921, 512, 2402, 2741, 1549, 512, 2046,
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1893, 2101, 512, 2159, 1801, 1288, 512, 1568, 2247, 2769, 512, 1281, 2739, 2780, 512, 1543,
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1909, 2737, 512, 2097, 2445, 2596, 512, 2757, 1794, 2024, 512, 2444, 1922, 2599, 512, 2112,
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1857, 2804, 512, 2744, 2079, 1288, 512, 2707, 2143, 1908, 512, 1281, 1640, 2782, 512, 1664,
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1731, 2169, 512, 2742, 1791, 1919, 512, 2185, 1917, 1802, 512, 2718, 1795, 1549, 512, 2098,
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2322, 2504, 512, 2581, 2350, 1288, 512, 1568, 2323, 2597, 512, 1281, 1858, 1923, 512, 1543
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};
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static const uint16_t HuffmanEncoderTable[ 256 ] =
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{
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34, 437, 1159, 1735, 2584, 280, 263, 1014, 341, 839, 1687, 183, 311, 726, 920, 2761,
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599, 1417, 7945, 8073, 7642, 16186, 8890, 12858, 3913, 6362, 2746, 13882, 7866, 1080, 1273, 3400,
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886, 3386, 1097, 11482, 15450, 16282, 12506, 15578, 2377, 6858, 826, 330, 10010, 12042, 8009, 1928,
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631, 3128, 3832, 6521, 1336, 2840, 217, 5657, 121, 3865, 6553, 6426, 4666, 3017, 5193, 7994,
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3320, 1287, 1991, 71, 536, 1304, 2057, 1801, 5081, 1594, 11642, 14106, 6617, 10938, 7290, 13114,
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4809, 2522, 5818, 14010, 7482, 5914, 7738, 9018, 3450, 11450, 5897, 2697, 3193, 4185, 3769, 3464,
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3897, 968, 6841, 6393, 2425, 775, 1048, 5369, 454, 648, 3033, 3145, 2440, 2297, 200, 2872,
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2136, 2248, 1144, 1944, 1431, 1031, 376, 408, 1208, 3608, 2616, 1848, 1784, 1671, 135, 1623,
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502, 663, 1223, 2007, 248, 2104, 24, 2168, 1656, 3704, 1400, 1864, 7353, 7241, 2073, 1241,
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4889, 5690, 6153, 15738, 698, 5210, 1722, 986, 12986, 3994, 3642, 9306, 4794, 794, 16058, 7066,
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4425, 8090, 4922, 714, 11738, 7194, 12762, 7450, 5001, 1562, 11834, 13402, 9914, 3290, 3258, 5338,
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905, 15386, 9178, 15306, 3162, 15050, 15930, 10650, 15674, 8522, 8250, 7114, 10714, 14362, 9786, 2266,
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1352, 4153, 1496, 518, 151, 15482, 12410, 2952, 7961, 8906, 1114, 58, 4570, 7258, 13530, 474,
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9, 15258, 3546, 6170, 4314, 2970, 7386, 14666, 7130, 6474, 14554, 5514, 15322, 3098, 15834, 3978,
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3353, 2329, 2458, 12170, 570, 1818, 11578, 14618, 1175, 8986, 4218, 9754, 8762, 392, 8282, 11290,
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7546, 3850, 11354, 12298, 15642, 14986, 8666, 20491, 90, 13706, 12186, 6794, 11162, 10458, 759, 582
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};
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void HuffmanPutBit( byte* fout, int32_t bitIndex, int bit )
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{
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const int byteIndex = bitIndex >> 3;
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const int bitOffset = bitIndex & 7;
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if ( bitOffset == 0 ) // Is this the first bit of a new byte?
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{
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// We don't need to preserve what's already in there,
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// so we can write that byte immediately.
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fout[ byteIndex ] = (byte)bit;
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return;
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}
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fout[(bitIndex >> 3)] |= bit << (bitIndex & 7);
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}
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int HuffmanPutSymbol( byte* fout, uint32_t offset, int symbol )
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{
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int32_t bits;
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uint32_t i;
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const uint16_t result = HuffmanEncoderTable[ symbol ];
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const uint16_t bitCount = result & 15;
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const uint16_t code = (result >> 4) & 0x7FF;
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bits = (int32_t)code;
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for( i = 0; i < bitCount; ++i )
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{
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HuffmanPutBit( fout, offset + i, bits & 1 );
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bits >>= 1;
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}
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return bitCount;
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}
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int HuffmanGetBit( const byte* buffer, int bitIndex )
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{
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return (buffer[(bitIndex >> 3)] >> (bitIndex & 7)) & 0x1;
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}
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int HuffmanGetSymbol( unsigned int* symbol, const byte* buffer, int bitIndex )
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{
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const uint16_t code = ((*(const uint32_t*)(buffer + (bitIndex >> 3))) >> ((uint32_t)bitIndex & 7)) & 0x7FF;
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const uint16_t entry = HuffmanDecoderTable[ code ];
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*symbol = (unsigned int)(entry & 0xFF);
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return (int)(entry >> 8);
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}
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