[2c47b73] | 1 | /** |
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| 2 | * @file Huffman.c |
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| 3 | * @author Sheng Di |
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| 4 | * @date Aug., 2016 |
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| 5 | * @brief Customized Huffman Encoding, Compression and Decompression functions |
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| 6 | * (C) 2016 by Mathematics and Computer Science (MCS), Argonne National Laboratory. |
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| 7 | * See COPYRIGHT in top-level directory. |
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| 8 | */ |
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| 9 | |
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| 10 | #include <stdio.h> |
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| 11 | #include <stdlib.h> |
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| 12 | #include <string.h> |
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| 13 | #include "Huffman.h" |
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| 14 | #include "sz.h" |
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| 15 | |
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| 16 | |
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| 17 | HuffmanTree* createHuffmanTree(int stateNum) |
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| 18 | { |
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| 19 | HuffmanTree *huffmanTree = (HuffmanTree*)malloc(sizeof(HuffmanTree)); |
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| 20 | memset(huffmanTree, 0, sizeof(HuffmanTree)); |
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| 21 | huffmanTree->stateNum = stateNum; |
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| 22 | huffmanTree->allNodes = 2*stateNum; |
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| 23 | |
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| 24 | huffmanTree->pool = (struct node_t*)malloc(huffmanTree->allNodes*2*sizeof(struct node_t)); |
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| 25 | huffmanTree->qqq = (node*)malloc(huffmanTree->allNodes*2*sizeof(node)); |
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| 26 | huffmanTree->code = (unsigned long**)malloc(huffmanTree->stateNum*sizeof(unsigned long*)); |
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| 27 | huffmanTree->cout = (unsigned char *)malloc(huffmanTree->stateNum*sizeof(unsigned char)); |
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| 28 | |
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| 29 | memset(huffmanTree->pool, 0, huffmanTree->allNodes*2*sizeof(struct node_t)); |
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| 30 | memset(huffmanTree->qqq, 0, huffmanTree->allNodes*2*sizeof(node)); |
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| 31 | memset(huffmanTree->code, 0, huffmanTree->stateNum*sizeof(unsigned long*)); |
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| 32 | memset(huffmanTree->cout, 0, huffmanTree->stateNum*sizeof(unsigned char)); |
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| 33 | huffmanTree->qq = huffmanTree->qqq - 1; |
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| 34 | huffmanTree->n_nodes = 0; |
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| 35 | huffmanTree->n_inode = 0; |
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| 36 | huffmanTree->qend = 1; |
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| 37 | |
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| 38 | return huffmanTree; |
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| 39 | } |
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| 40 | |
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| 41 | HuffmanTree* createDefaultHuffmanTree() |
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| 42 | { |
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| 43 | int maxRangeRadius = 32768; |
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| 44 | int stateNum = maxRangeRadius << 1; //*2 |
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| 45 | |
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| 46 | return createHuffmanTree(stateNum); |
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| 47 | } |
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| 48 | |
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| 49 | node new_node(HuffmanTree* huffmanTree, size_t freq, unsigned int c, node a, node b) |
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| 50 | { |
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| 51 | node n = huffmanTree->pool + huffmanTree->n_nodes++; |
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| 52 | if (freq) |
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| 53 | { |
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| 54 | n->c = c; |
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| 55 | n->freq = freq; |
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| 56 | n->t = 1; |
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| 57 | } |
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| 58 | else { |
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| 59 | n->left = a; |
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| 60 | n->right = b; |
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| 61 | n->freq = a->freq + b->freq; |
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| 62 | n->t = 0; |
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| 63 | //n->c = 0; |
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| 64 | } |
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| 65 | return n; |
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| 66 | } |
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| 67 | |
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| 68 | node new_node2(HuffmanTree *huffmanTree, unsigned int c, unsigned char t) |
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| 69 | { |
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| 70 | huffmanTree->pool[huffmanTree->n_nodes].c = c; |
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| 71 | huffmanTree->pool[huffmanTree->n_nodes].t = t; |
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| 72 | return huffmanTree->pool + huffmanTree->n_nodes++; |
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| 73 | } |
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| 74 | |
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| 75 | /* priority queue */ |
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| 76 | void qinsert(HuffmanTree *huffmanTree, node n) |
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| 77 | { |
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| 78 | int j, i = huffmanTree->qend++; |
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| 79 | while ((j = (i>>1))) //j=i/2 |
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| 80 | { |
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| 81 | if (huffmanTree->qq[j]->freq <= n->freq) break; |
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| 82 | huffmanTree->qq[i] = huffmanTree->qq[j], i = j; |
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| 83 | } |
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| 84 | huffmanTree->qq[i] = n; |
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| 85 | } |
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| 86 | |
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| 87 | node qremove(HuffmanTree* huffmanTree) |
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| 88 | { |
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| 89 | int i, l; |
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| 90 | node n = huffmanTree->qq[i = 1]; |
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| 91 | |
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| 92 | if (huffmanTree->qend < 2) return 0; |
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| 93 | huffmanTree->qend --; |
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| 94 | while ((l = (i<<1)) < huffmanTree->qend) //l=(i*2) |
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| 95 | { |
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| 96 | if (l + 1 < huffmanTree->qend && huffmanTree->qq[l + 1]->freq < huffmanTree->qq[l]->freq) l++; |
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| 97 | huffmanTree->qq[i] = huffmanTree->qq[l], i = l; |
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| 98 | } |
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| 99 | huffmanTree->qq[i] = huffmanTree->qq[huffmanTree->qend]; |
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| 100 | return n; |
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| 101 | } |
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| 102 | |
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| 103 | /* walk the tree and put 0s and 1s */ |
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| 104 | /** |
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| 105 | * @out1 should be set to 0. |
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| 106 | * @out2 should be 0 as well. |
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| 107 | * @index: the index of the byte |
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| 108 | * */ |
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| 109 | void build_code(HuffmanTree *huffmanTree, node n, int len, unsigned long out1, unsigned long out2) |
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| 110 | { |
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| 111 | if (n->t) { |
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| 112 | huffmanTree->code[n->c] = (unsigned long*)malloc(2*sizeof(unsigned long)); |
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| 113 | if(len<=64) |
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| 114 | { |
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| 115 | (huffmanTree->code[n->c])[0] = out1 << (64 - len); |
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| 116 | (huffmanTree->code[n->c])[1] = out2; |
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| 117 | } |
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| 118 | else |
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| 119 | { |
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| 120 | (huffmanTree->code[n->c])[0] = out1; |
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| 121 | (huffmanTree->code[n->c])[1] = out2 << (128 - len); |
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| 122 | } |
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| 123 | huffmanTree->cout[n->c] = (unsigned char)len; |
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| 124 | return; |
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| 125 | } |
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| 126 | int index = len >> 6; //=len/64 |
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| 127 | if(index == 0) |
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| 128 | { |
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| 129 | out1 = out1 << 1; |
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| 130 | out1 = out1 | 0; |
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| 131 | build_code(huffmanTree, n->left, len + 1, out1, 0); |
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| 132 | out1 = out1 | 1; |
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| 133 | build_code(huffmanTree, n->right, len + 1, out1, 0); |
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| 134 | } |
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| 135 | else |
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| 136 | { |
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| 137 | if(len%64!=0) |
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| 138 | out2 = out2 << 1; |
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| 139 | out2 = out2 | 0; |
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| 140 | build_code(huffmanTree, n->left, len + 1, out1, out2); |
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| 141 | out2 = out2 | 1; |
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| 142 | build_code(huffmanTree, n->right, len + 1, out1, out2); |
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| 143 | } |
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| 144 | } |
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| 145 | |
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| 146 | void init(HuffmanTree* huffmanTree, int *s, size_t length) |
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| 147 | { |
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| 148 | size_t i, index; |
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| 149 | size_t *freq = (size_t *)malloc(huffmanTree->allNodes*sizeof(size_t)); |
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| 150 | memset(freq, 0, huffmanTree->allNodes*sizeof(size_t)); |
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| 151 | for(i = 0;i < length;i++) |
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| 152 | { |
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| 153 | //index = 0; |
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| 154 | //index = (index | s[i])<<8; |
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| 155 | //index = index | s[i+1]; |
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| 156 | index = s[i]; |
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| 157 | freq[index]++; |
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| 158 | } |
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| 159 | |
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| 160 | for (i = 0; i < huffmanTree->allNodes; i++) |
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| 161 | if (freq[i]) |
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| 162 | qinsert(huffmanTree, new_node(huffmanTree, freq[i], i, 0, 0)); |
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| 163 | |
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| 164 | while (huffmanTree->qend > 2) |
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| 165 | qinsert(huffmanTree, new_node(huffmanTree, 0, 0, qremove(huffmanTree), qremove(huffmanTree))); |
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| 166 | |
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| 167 | build_code(huffmanTree, huffmanTree->qq[1], 0, 0, 0); |
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| 168 | free(freq); |
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| 169 | } |
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| 170 | |
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| 171 | void encode(HuffmanTree *huffmanTree, int *s, size_t length, unsigned char *out, size_t *outSize) |
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| 172 | { |
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| 173 | size_t i = 0; |
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| 174 | unsigned char bitSize = 0, byteSize, byteSizep; |
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| 175 | int state; |
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| 176 | unsigned char *p = out; |
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| 177 | int lackBits = 0; |
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| 178 | //long totalBitSize = 0, maxBitSize = 0, bitSize21 = 0, bitSize32 = 0; |
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| 179 | for (i = 0;i<length;i++) |
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| 180 | { |
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| 181 | //state = 0; |
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| 182 | //state = (state | s[i])<<8; |
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| 183 | //state = state | s[i+1]; |
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| 184 | |
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| 185 | state = s[i]; |
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| 186 | bitSize = huffmanTree->cout[state]; |
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| 187 | |
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| 188 | //printf("%d %d : %d %u\n",i, state, bitSize, (code[state])[0] >> (64-cout[state])); |
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| 189 | //debug: compute the average bitSize and the count that is over 32... |
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| 190 | /*if(bitSize>=21) |
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| 191 | bitSize21++; |
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| 192 | if(bitSize>=32) |
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| 193 | bitSize32++; |
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| 194 | if(maxBitSize<bitSize) |
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| 195 | maxBitSize = bitSize; |
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| 196 | totalBitSize+=bitSize;*/ |
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| 197 | |
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| 198 | if(lackBits==0) |
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| 199 | { |
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| 200 | byteSize = bitSize%8==0 ? bitSize/8 : bitSize/8+1; //it's equal to the number of bytes involved (for *outSize) |
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| 201 | byteSizep = bitSize/8; //it's used to move the pointer p for next data |
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| 202 | if(byteSize<=8) |
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| 203 | { |
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| 204 | longToBytes_bigEndian(p, (huffmanTree->code[state])[0]); |
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| 205 | p += byteSizep; |
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| 206 | } |
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| 207 | else //byteSize>8 |
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| 208 | { |
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| 209 | longToBytes_bigEndian(p, (huffmanTree->code[state])[0]); |
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| 210 | p += 8; |
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| 211 | longToBytes_bigEndian(p, (huffmanTree->code[state])[1]); |
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| 212 | p += (byteSizep - 8); |
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| 213 | } |
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| 214 | *outSize += byteSize; |
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| 215 | lackBits = bitSize%8==0 ? 0 : 8 - bitSize%8; |
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| 216 | } |
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| 217 | else |
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| 218 | { |
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| 219 | *p = (*p) | (unsigned char)((huffmanTree->code[state])[0] >> (64 - lackBits)); |
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| 220 | if(lackBits < bitSize) |
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| 221 | { |
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| 222 | p++; |
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| 223 | //(*outSize)++; |
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| 224 | long newCode = (huffmanTree->code[state])[0] << lackBits; |
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| 225 | longToBytes_bigEndian(p, newCode); |
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| 226 | |
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| 227 | if(bitSize<=64) |
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| 228 | { |
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| 229 | bitSize -= lackBits; |
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| 230 | byteSize = bitSize%8==0 ? bitSize/8 : bitSize/8+1; |
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| 231 | byteSizep = bitSize/8; |
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| 232 | p += byteSizep; |
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| 233 | (*outSize)+=byteSize; |
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| 234 | lackBits = bitSize%8==0 ? 0 : 8 - bitSize%8; |
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| 235 | } |
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| 236 | else //bitSize > 64 |
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| 237 | { |
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| 238 | byteSizep = 7; //must be 7 bytes, because lackBits!=0 |
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| 239 | p+=byteSizep; |
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| 240 | (*outSize)+=byteSize; |
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| 241 | |
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| 242 | bitSize -= 64; |
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| 243 | if(lackBits < bitSize) |
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| 244 | { |
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| 245 | *p = (*p) | (unsigned char)((huffmanTree->code[state])[0] >> (64 - lackBits)); |
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| 246 | p++; |
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| 247 | //(*outSize)++; |
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| 248 | newCode = (huffmanTree->code[state])[1] << lackBits; |
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| 249 | longToBytes_bigEndian(p, newCode); |
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| 250 | bitSize -= lackBits; |
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| 251 | byteSize = bitSize%8==0 ? bitSize/8 : bitSize/8+1; |
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| 252 | byteSizep = bitSize/8; |
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| 253 | p += byteSizep; |
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| 254 | (*outSize)+=byteSize; |
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| 255 | lackBits = bitSize%8==0 ? 0 : 8 - bitSize%8; |
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| 256 | } |
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| 257 | else //lackBits >= bitSize |
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| 258 | { |
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| 259 | *p = (*p) | (unsigned char)((huffmanTree->code[state])[0] >> (64 - bitSize)); |
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| 260 | lackBits -= bitSize; |
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| 261 | } |
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| 262 | } |
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| 263 | } |
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| 264 | else //lackBits >= bitSize |
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| 265 | { |
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| 266 | lackBits -= bitSize; |
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| 267 | if(lackBits==0) |
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| 268 | p++; |
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| 269 | } |
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| 270 | } |
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| 271 | } |
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| 272 | // for(i=0;i<stateNum;i++) |
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| 273 | // if(code[i]!=NULL) free(code[i]); |
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| 274 | /*printf("max bitsize = %d\n", maxBitSize); |
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| 275 | printf("bitSize21 ratio = %f\n", ((float)bitSize21)/length); |
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| 276 | printf("bitSize32 ratio = %f\n", ((float)bitSize32)/length); |
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| 277 | printf("avg bit size = %f\n", ((float)totalBitSize)/length);*/ |
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| 278 | } |
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| 279 | |
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| 280 | void decode(unsigned char *s, size_t targetLength, node t, int *out) |
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| 281 | { |
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| 282 | size_t i = 0, byteIndex = 0, count = 0; |
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| 283 | int r; |
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| 284 | node n = t; |
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| 285 | |
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| 286 | if(n->t) //root->t==1 means that all state values are the same (constant) |
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| 287 | { |
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| 288 | for(count=0;count<targetLength;count++) |
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| 289 | out[count] = n->c; |
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| 290 | return; |
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| 291 | } |
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| 292 | |
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| 293 | for(i=0;count<targetLength;i++) |
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| 294 | { |
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| 295 | |
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| 296 | byteIndex = i>>3; //i/8 |
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| 297 | r = i%8; |
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| 298 | if(((s[byteIndex] >> (7-r)) & 0x01) == 0) |
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| 299 | n = n->left; |
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| 300 | else |
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| 301 | n = n->right; |
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| 302 | |
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| 303 | if (n->t) { |
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| 304 | //putchar(n->c); |
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| 305 | out[count] = n->c; |
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| 306 | n = t; |
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| 307 | count++; |
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| 308 | } |
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| 309 | } |
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| 310 | // putchar('\n'); |
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| 311 | if (t != n) printf("garbage input\n"); |
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| 312 | return; |
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| 313 | } |
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| 314 | |
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| 315 | void pad_tree_uchar(HuffmanTree* huffmanTree, unsigned char* L, unsigned char* R, unsigned int* C, unsigned char* t, unsigned int i, node root) |
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| 316 | { |
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| 317 | C[i] = root->c; |
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| 318 | t[i] = root->t; |
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| 319 | node lroot = root->left; |
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| 320 | if(lroot!=0) |
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| 321 | { |
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| 322 | huffmanTree->n_inode++; |
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| 323 | L[i] = huffmanTree->n_inode; |
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| 324 | pad_tree_uchar(huffmanTree, L,R,C,t, huffmanTree->n_inode, lroot); |
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| 325 | } |
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| 326 | node rroot = root->right; |
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| 327 | if(rroot!=0) |
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| 328 | { |
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| 329 | huffmanTree->n_inode++; |
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| 330 | R[i] = huffmanTree->n_inode; |
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| 331 | pad_tree_uchar(huffmanTree, L,R,C,t, huffmanTree->n_inode, rroot); |
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| 332 | } |
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| 333 | } |
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| 334 | |
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| 335 | void pad_tree_ushort(HuffmanTree* huffmanTree, unsigned short* L, unsigned short* R, unsigned int* C, unsigned char* t, unsigned int i, node root) |
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| 336 | { |
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| 337 | C[i] = root->c; |
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| 338 | t[i] = root->t; |
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| 339 | node lroot = root->left; |
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| 340 | if(lroot!=0) |
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| 341 | { |
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| 342 | huffmanTree->n_inode++; |
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| 343 | L[i] = huffmanTree->n_inode; |
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| 344 | pad_tree_ushort(huffmanTree,L,R,C,t,huffmanTree->n_inode, lroot); |
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| 345 | } |
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| 346 | node rroot = root->right; |
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| 347 | if(rroot!=0) |
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| 348 | { |
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| 349 | huffmanTree->n_inode++; |
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| 350 | R[i] = huffmanTree->n_inode; |
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| 351 | pad_tree_ushort(huffmanTree,L,R,C,t,huffmanTree->n_inode, rroot); |
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| 352 | } |
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| 353 | } |
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| 354 | |
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| 355 | void pad_tree_uint(HuffmanTree* huffmanTree, unsigned int* L, unsigned int* R, unsigned int* C, unsigned char* t, unsigned int i, node root) |
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| 356 | { |
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| 357 | C[i] = root->c; |
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| 358 | t[i] = root->t; |
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| 359 | node lroot = root->left; |
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| 360 | if(lroot!=0) |
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| 361 | { |
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| 362 | huffmanTree->n_inode++; |
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| 363 | L[i] = huffmanTree->n_inode; |
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| 364 | pad_tree_uint(huffmanTree,L,R,C,t,huffmanTree->n_inode, lroot); |
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| 365 | } |
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| 366 | node rroot = root->right; |
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| 367 | if(rroot!=0) |
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| 368 | { |
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| 369 | huffmanTree->n_inode++; |
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| 370 | R[i] = huffmanTree->n_inode; |
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| 371 | pad_tree_uint(huffmanTree,L,R,C,t,huffmanTree->n_inode, rroot); |
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| 372 | } |
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| 373 | } |
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| 374 | |
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| 375 | unsigned int convert_HuffTree_to_bytes_anyStates(HuffmanTree* huffmanTree, int nodeCount, unsigned char** out) |
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| 376 | { |
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| 377 | //printf("nodeCount=%d\n", nodeCount); |
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| 378 | if(nodeCount<=256) |
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| 379 | { |
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| 380 | unsigned char* L = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
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| 381 | memset(L, 0, nodeCount*sizeof(unsigned char)); |
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| 382 | unsigned char* R = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
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| 383 | memset(R, 0, nodeCount*sizeof(unsigned char)); |
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| 384 | unsigned int* C = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
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| 385 | memset(C, 0, nodeCount*sizeof(unsigned int)); |
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| 386 | unsigned char* t = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
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| 387 | memset(t, 0, nodeCount*sizeof(unsigned char)); |
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| 388 | |
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| 389 | pad_tree_uchar(huffmanTree,L,R,C,t,0,huffmanTree->qq[1]); |
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| 390 | |
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| 391 | unsigned int totalSize = 1+3*nodeCount*sizeof(unsigned char)+nodeCount*sizeof(unsigned int); |
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| 392 | *out = (unsigned char*)malloc(totalSize*sizeof(unsigned char)); |
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| 393 | (*out)[0] = (unsigned char)sysEndianType; |
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| 394 | memcpy(*out+1, L, nodeCount*sizeof(unsigned char)); |
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| 395 | memcpy((*out)+1+nodeCount*sizeof(unsigned char),R,nodeCount*sizeof(unsigned char)); |
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| 396 | memcpy((*out)+1+2*nodeCount*sizeof(unsigned char),C,nodeCount*sizeof(unsigned int)); |
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| 397 | memcpy((*out)+1+2*nodeCount*sizeof(unsigned char)+nodeCount*sizeof(unsigned int), t, nodeCount*sizeof(unsigned char)); |
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| 398 | free(L); |
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| 399 | free(R); |
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| 400 | free(C); |
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| 401 | free(t); |
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| 402 | return totalSize; |
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| 403 | |
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| 404 | } |
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| 405 | else if(nodeCount<=65536) |
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| 406 | { |
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| 407 | unsigned short* L = (unsigned short*)malloc(nodeCount*sizeof(unsigned short)); |
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| 408 | memset(L, 0, nodeCount*sizeof(unsigned short)); |
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| 409 | unsigned short* R = (unsigned short*)malloc(nodeCount*sizeof(unsigned short)); |
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| 410 | memset(R, 0, nodeCount*sizeof(unsigned short)); |
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| 411 | unsigned int* C = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
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| 412 | memset(C, 0, nodeCount*sizeof(unsigned int)); |
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| 413 | unsigned char* t = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
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| 414 | memset(t, 0, nodeCount*sizeof(unsigned char)); |
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| 415 | pad_tree_ushort(huffmanTree,L,R,C,t,0,huffmanTree->qq[1]); |
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| 416 | unsigned int totalSize = 1+2*nodeCount*sizeof(unsigned short)+nodeCount*sizeof(unsigned char) + nodeCount*sizeof(unsigned int); |
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| 417 | *out = (unsigned char*)malloc(totalSize); |
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| 418 | (*out)[0] = (unsigned char)sysEndianType; |
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| 419 | memcpy(*out+1, L, nodeCount*sizeof(unsigned short)); |
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| 420 | memcpy((*out)+1+nodeCount*sizeof(unsigned short),R,nodeCount*sizeof(unsigned short)); |
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| 421 | memcpy((*out)+1+2*nodeCount*sizeof(unsigned short),C,nodeCount*sizeof(unsigned int)); |
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| 422 | memcpy((*out)+1+2*nodeCount*sizeof(unsigned short)+nodeCount*sizeof(unsigned int),t,nodeCount*sizeof(unsigned char)); |
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| 423 | free(L); |
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| 424 | free(R); |
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| 425 | free(C); |
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| 426 | free(t); |
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| 427 | return totalSize; |
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| 428 | } |
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| 429 | else //nodeCount>65536 |
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| 430 | { |
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| 431 | unsigned int* L = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
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| 432 | memset(L, 0, nodeCount*sizeof(unsigned int)); |
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| 433 | unsigned int* R = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
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| 434 | memset(R, 0, nodeCount*sizeof(unsigned int)); |
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| 435 | unsigned int* C = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
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| 436 | memset(C, 0, nodeCount*sizeof(unsigned int)); |
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| 437 | unsigned char* t = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
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| 438 | memset(t, 0, nodeCount*sizeof(unsigned char)); |
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| 439 | pad_tree_uint(huffmanTree, L,R,C,t,0,huffmanTree->qq[1]); |
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| 440 | |
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| 441 | //debug |
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| 442 | //node root = new_node2(0,0); |
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| 443 | //unpad_tree_uint(L,R,C,t,0,root); |
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| 444 | |
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| 445 | unsigned int totalSize = 1+3*nodeCount*sizeof(unsigned int)+nodeCount*sizeof(unsigned char); |
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| 446 | *out = (unsigned char*)malloc(totalSize); |
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| 447 | (*out)[0] = (unsigned char)sysEndianType; |
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| 448 | memcpy(*out+1, L, nodeCount*sizeof(unsigned int)); |
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| 449 | memcpy((*out)+1+nodeCount*sizeof(unsigned int),R,nodeCount*sizeof(unsigned int)); |
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| 450 | memcpy((*out)+1+2*nodeCount*sizeof(unsigned int),C,nodeCount*sizeof(unsigned int)); |
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| 451 | memcpy((*out)+1+3*nodeCount*sizeof(unsigned int),t,nodeCount*sizeof(unsigned char)); |
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| 452 | free(L); |
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| 453 | free(R); |
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| 454 | free(C); |
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| 455 | free(t); |
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| 456 | return totalSize; |
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| 457 | } |
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| 458 | } |
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| 459 | |
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| 460 | void unpad_tree_uchar(HuffmanTree* huffmanTree, unsigned char* L, unsigned char* R, unsigned int* C, unsigned char *t, unsigned int i, node root) |
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| 461 | { |
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| 462 | //root->c = C[i]; |
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| 463 | if(root->t==0) |
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| 464 | { |
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| 465 | unsigned char l, r; |
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| 466 | l = L[i]; |
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| 467 | if(l!=0) |
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| 468 | { |
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| 469 | node lroot = new_node2(huffmanTree,C[l],t[l]); |
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| 470 | root->left = lroot; |
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| 471 | unpad_tree_uchar(huffmanTree,L,R,C,t,l,lroot); |
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| 472 | } |
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| 473 | r = R[i]; |
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| 474 | if(r!=0) |
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| 475 | { |
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| 476 | node rroot = new_node2(huffmanTree,C[r],t[r]); |
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| 477 | root->right = rroot; |
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| 478 | unpad_tree_uchar(huffmanTree,L,R,C,t,r,rroot); |
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| 479 | } |
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| 480 | } |
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| 481 | } |
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| 482 | |
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| 483 | void unpad_tree_ushort(HuffmanTree* huffmanTree, unsigned short* L, unsigned short* R, unsigned int* C, unsigned char* t, unsigned int i, node root) |
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| 484 | { |
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| 485 | //root->c = C[i]; |
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| 486 | if(root->t==0) |
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| 487 | { |
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| 488 | unsigned short l, r; |
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| 489 | l = L[i]; |
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| 490 | if(l!=0) |
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| 491 | { |
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| 492 | node lroot = new_node2(huffmanTree,C[l],t[l]); |
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| 493 | root->left = lroot; |
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| 494 | unpad_tree_ushort(huffmanTree,L,R,C,t,l,lroot); |
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| 495 | } |
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| 496 | r = R[i]; |
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| 497 | if(r!=0) |
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| 498 | { |
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| 499 | node rroot = new_node2(huffmanTree,C[r],t[r]); |
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| 500 | root->right = rroot; |
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| 501 | unpad_tree_ushort(huffmanTree,L,R,C,t,r,rroot); |
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| 502 | } |
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| 503 | } |
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| 504 | } |
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| 505 | |
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| 506 | void unpad_tree_uint(HuffmanTree* huffmanTree, unsigned int* L, unsigned int* R, unsigned int* C, unsigned char* t, unsigned int i, node root) |
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| 507 | { |
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| 508 | //root->c = C[i]; |
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| 509 | if(root->t==0) |
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| 510 | { |
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| 511 | unsigned int l, r; |
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| 512 | l = L[i]; |
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| 513 | if(l!=0) |
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| 514 | { |
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| 515 | node lroot = new_node2(huffmanTree,C[l],t[l]); |
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| 516 | root->left = lroot; |
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| 517 | unpad_tree_uint(huffmanTree,L,R,C,t,l,lroot); |
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| 518 | } |
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| 519 | r = R[i]; |
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| 520 | if(r!=0) |
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| 521 | { |
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| 522 | node rroot = new_node2(huffmanTree,C[r],t[r]); |
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| 523 | root->right = rroot; |
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| 524 | unpad_tree_uint(huffmanTree,L,R,C,t,r,rroot); |
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| 525 | } |
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| 526 | } |
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| 527 | } |
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| 528 | |
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| 529 | node reconstruct_HuffTree_from_bytes_anyStates(HuffmanTree *huffmanTree, unsigned char* bytes, int nodeCount) |
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| 530 | { |
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| 531 | //printf("nodeCount=%d\n", nodeCount); |
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| 532 | if(nodeCount<=256) |
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| 533 | { |
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| 534 | unsigned char* L = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
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| 535 | memset(L, 0, nodeCount*sizeof(unsigned char)); |
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| 536 | unsigned char* R = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
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| 537 | memset(R, 0, nodeCount*sizeof(unsigned char)); |
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| 538 | unsigned int* C = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
---|
| 539 | memset(C, 0, nodeCount*sizeof(unsigned int)); |
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| 540 | unsigned char* t = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
---|
| 541 | memset(t, 0, nodeCount*sizeof(unsigned char)); |
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| 542 | unsigned char cmpSysEndianType = bytes[0]; |
---|
| 543 | if(cmpSysEndianType!=(unsigned char)sysEndianType) |
---|
| 544 | { |
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| 545 | unsigned char* p = (unsigned char*)(bytes+1+2*nodeCount*sizeof(unsigned char)); |
---|
| 546 | size_t i = 0, size = nodeCount*sizeof(unsigned int); |
---|
| 547 | while(1) |
---|
| 548 | { |
---|
| 549 | symTransform_4bytes(p); |
---|
| 550 | i+=sizeof(unsigned int); |
---|
| 551 | if(i<size) |
---|
| 552 | p+=sizeof(unsigned int); |
---|
| 553 | else |
---|
| 554 | break; |
---|
| 555 | } |
---|
| 556 | } |
---|
| 557 | memcpy(L, bytes+1, nodeCount*sizeof(unsigned char)); |
---|
| 558 | memcpy(R, bytes+1+nodeCount*sizeof(unsigned char), nodeCount*sizeof(unsigned char)); |
---|
| 559 | memcpy(C, bytes+1+2*nodeCount*sizeof(unsigned char), nodeCount*sizeof(unsigned int)); |
---|
| 560 | memcpy(t, bytes+1+2*nodeCount*sizeof(unsigned char)+nodeCount*sizeof(unsigned int), nodeCount*sizeof(unsigned char)); |
---|
| 561 | node root = new_node2(huffmanTree, C[0],t[0]); |
---|
| 562 | unpad_tree_uchar(huffmanTree,L,R,C,t,0,root); |
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| 563 | free(L); |
---|
| 564 | free(R); |
---|
| 565 | free(C); |
---|
| 566 | free(t); |
---|
| 567 | return root; |
---|
| 568 | } |
---|
| 569 | else if(nodeCount<=65536) |
---|
| 570 | { |
---|
| 571 | unsigned short* L = (unsigned short*)malloc(nodeCount*sizeof(unsigned short)); |
---|
| 572 | memset(L, 0, nodeCount*sizeof(unsigned short)); |
---|
| 573 | unsigned short* R = (unsigned short*)malloc(nodeCount*sizeof(unsigned short)); |
---|
| 574 | memset(R, 0, nodeCount*sizeof(unsigned short)); |
---|
| 575 | unsigned int* C = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
---|
| 576 | memset(C, 0, nodeCount*sizeof(unsigned int)); |
---|
| 577 | unsigned char* t = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
---|
| 578 | memset(t, 0, nodeCount*sizeof(unsigned char)); |
---|
| 579 | |
---|
| 580 | unsigned char cmpSysEndianType = bytes[0]; |
---|
| 581 | if(cmpSysEndianType!=(unsigned char)sysEndianType) |
---|
| 582 | { |
---|
| 583 | unsigned char* p = (unsigned char*)(bytes+1); |
---|
| 584 | size_t i = 0, size = 3*nodeCount*sizeof(unsigned int); |
---|
| 585 | while(1) |
---|
| 586 | { |
---|
| 587 | symTransform_4bytes(p); |
---|
| 588 | i+=sizeof(unsigned int); |
---|
| 589 | if(i<size) |
---|
| 590 | p+=sizeof(unsigned int); |
---|
| 591 | else |
---|
| 592 | break; |
---|
| 593 | } |
---|
| 594 | } |
---|
| 595 | |
---|
| 596 | memcpy(L, bytes+1, nodeCount*sizeof(unsigned short)); |
---|
| 597 | memcpy(R, bytes+1+nodeCount*sizeof(unsigned short), nodeCount*sizeof(unsigned short)); |
---|
| 598 | memcpy(C, bytes+1+2*nodeCount*sizeof(unsigned short), nodeCount*sizeof(unsigned int)); |
---|
| 599 | |
---|
| 600 | memcpy(t, bytes+1+2*nodeCount*sizeof(unsigned short)+nodeCount*sizeof(unsigned int), nodeCount*sizeof(unsigned char)); |
---|
| 601 | |
---|
| 602 | node root = new_node2(huffmanTree,0,0); |
---|
| 603 | unpad_tree_ushort(huffmanTree,L,R,C,t,0,root); |
---|
| 604 | free(L); |
---|
| 605 | free(R); |
---|
| 606 | free(C); |
---|
| 607 | free(t); |
---|
| 608 | return root; |
---|
| 609 | } |
---|
| 610 | else //nodeCount>65536 |
---|
| 611 | { |
---|
| 612 | unsigned int* L = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
---|
| 613 | memset(L, 0, nodeCount*sizeof(unsigned int)); |
---|
| 614 | unsigned int* R = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
---|
| 615 | memset(R, 0, nodeCount*sizeof(unsigned int)); |
---|
| 616 | unsigned int* C = (unsigned int*)malloc(nodeCount*sizeof(unsigned int)); |
---|
| 617 | memset(C, 0, nodeCount*sizeof(unsigned int)); |
---|
| 618 | unsigned char* t = (unsigned char*)malloc(nodeCount*sizeof(unsigned char)); |
---|
| 619 | memset(t, 0, nodeCount*sizeof(unsigned char)); |
---|
| 620 | unsigned char cmpSysEndianType = bytes[0]; |
---|
| 621 | if(cmpSysEndianType!=(unsigned char)sysEndianType) |
---|
| 622 | { |
---|
| 623 | unsigned char* p = (unsigned char*)(bytes+1); |
---|
| 624 | size_t i = 0, size = 3*nodeCount*sizeof(unsigned int); |
---|
| 625 | while(1) |
---|
| 626 | { |
---|
| 627 | symTransform_4bytes(p); |
---|
| 628 | i+=sizeof(unsigned int); |
---|
| 629 | if(i<size) |
---|
| 630 | p+=sizeof(unsigned int); |
---|
| 631 | else |
---|
| 632 | break; |
---|
| 633 | } |
---|
| 634 | } |
---|
| 635 | |
---|
| 636 | memcpy(L, bytes+1, nodeCount*sizeof(unsigned int)); |
---|
| 637 | memcpy(R, bytes+1+nodeCount*sizeof(unsigned int), nodeCount*sizeof(unsigned int)); |
---|
| 638 | memcpy(C, bytes+1+2*nodeCount*sizeof(unsigned int), nodeCount*sizeof(unsigned int)); |
---|
| 639 | |
---|
| 640 | memcpy(t, bytes+1+3*nodeCount*sizeof(unsigned int), nodeCount*sizeof(unsigned char)); |
---|
| 641 | |
---|
| 642 | node root = new_node2(huffmanTree,0,0); |
---|
| 643 | unpad_tree_uint(huffmanTree,L,R,C,t,0,root); |
---|
| 644 | free(L); |
---|
| 645 | free(R); |
---|
| 646 | free(C); |
---|
| 647 | free(t); |
---|
| 648 | return root; |
---|
| 649 | } |
---|
| 650 | } |
---|
| 651 | |
---|
| 652 | void encode_withTree(HuffmanTree* huffmanTree, int *s, size_t length, unsigned char **out, size_t *outSize) |
---|
| 653 | { |
---|
| 654 | size_t i, nodeCount = 0; |
---|
| 655 | unsigned char *treeBytes, buffer[4]; |
---|
| 656 | |
---|
| 657 | init(huffmanTree, s, length); |
---|
| 658 | for (i = 0; i < huffmanTree->stateNum; i++) |
---|
| 659 | if (huffmanTree->code[i]) nodeCount++; |
---|
| 660 | nodeCount = nodeCount*2-1; |
---|
| 661 | unsigned int treeByteSize = convert_HuffTree_to_bytes_anyStates(huffmanTree,nodeCount, &treeBytes); |
---|
| 662 | //printf("treeByteSize=%d\n", treeByteSize); |
---|
| 663 | *out = (unsigned char*)malloc(length*sizeof(int)+treeByteSize); |
---|
| 664 | intToBytes_bigEndian(buffer, nodeCount); |
---|
| 665 | memcpy(*out, buffer, 4); |
---|
| 666 | memcpy(*out+4, treeBytes, treeByteSize); |
---|
| 667 | free(treeBytes); |
---|
| 668 | size_t enCodeSize = 0; |
---|
| 669 | encode(huffmanTree, s, length, *out+4+treeByteSize, &enCodeSize); |
---|
| 670 | *outSize = 4+treeByteSize+enCodeSize; |
---|
| 671 | |
---|
| 672 | //unsigned short state[length]; |
---|
| 673 | //decode(*out+4+treeByteSize, enCodeSize, qqq[0], state); |
---|
| 674 | //printf("dataSeriesLength=%d",length ); |
---|
| 675 | } |
---|
| 676 | |
---|
| 677 | /** |
---|
| 678 | * @par *out rememmber to allocate targetLength short_type data for it beforehand. |
---|
| 679 | * |
---|
| 680 | * */ |
---|
| 681 | void decode_withTree(HuffmanTree* huffmanTree, unsigned char *s, size_t targetLength, int *out) |
---|
| 682 | { |
---|
| 683 | size_t encodeStartIndex; |
---|
| 684 | size_t nodeCount = bytesToInt_bigEndian(s); |
---|
| 685 | node root = reconstruct_HuffTree_from_bytes_anyStates(huffmanTree,s+4, nodeCount); |
---|
| 686 | |
---|
| 687 | //sdi: Debug |
---|
| 688 | /* build_code(root, 0, 0, 0); |
---|
| 689 | int i; |
---|
| 690 | unsigned long code_1, code_2; |
---|
| 691 | for (i = 0; i < stateNum; i++) |
---|
| 692 | if (code[i]) |
---|
| 693 | { |
---|
| 694 | printf("%d: %lu,%lu ; %u\n", i, (code[i])[0],(code[i])[1], cout[i]); |
---|
| 695 | //code_1 = (code[i])[0]; |
---|
| 696 | }*/ |
---|
| 697 | |
---|
| 698 | if(nodeCount<=256) |
---|
| 699 | encodeStartIndex = 1+3*nodeCount*sizeof(unsigned char)+nodeCount*sizeof(unsigned int); |
---|
| 700 | else if(nodeCount<=65536) |
---|
| 701 | encodeStartIndex = 1+2*nodeCount*sizeof(unsigned short)+nodeCount*sizeof(unsigned char)+nodeCount*sizeof(unsigned int); |
---|
| 702 | else |
---|
| 703 | encodeStartIndex = 1+3*nodeCount*sizeof(unsigned int)+nodeCount*sizeof(unsigned char); |
---|
| 704 | decode(s+4+encodeStartIndex, targetLength, root, out); |
---|
| 705 | } |
---|
| 706 | |
---|
| 707 | void SZ_ReleaseHuffman(HuffmanTree* huffmanTree) |
---|
| 708 | { |
---|
| 709 | size_t i; |
---|
| 710 | free(huffmanTree->pool); |
---|
| 711 | huffmanTree->pool = NULL; |
---|
| 712 | free(huffmanTree->qqq); |
---|
| 713 | huffmanTree->qqq = NULL; |
---|
| 714 | for(i=0;i<huffmanTree->stateNum;i++) |
---|
| 715 | { |
---|
| 716 | if(huffmanTree->code[i]!=NULL) |
---|
| 717 | free(huffmanTree->code[i]); |
---|
| 718 | } |
---|
| 719 | free(huffmanTree->code); |
---|
| 720 | huffmanTree->code = NULL; |
---|
| 721 | free(huffmanTree->cout); |
---|
| 722 | huffmanTree->cout = NULL; |
---|
| 723 | free(huffmanTree); |
---|
| 724 | huffmanTree = NULL; |
---|
| 725 | } |
---|