1 | /** |
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2 | * @file callZlib.c |
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3 | * @author Sheng Di |
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4 | * @date June, 2016 |
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5 | * @brief gzip compressor code: the interface to call zlib |
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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 | |
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11 | #include <stdio.h> |
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12 | #include <stdlib.h> |
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13 | #include <zlib.h> |
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14 | #include <sz.h> |
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15 | |
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16 | #if MAX_MEM_LEVEL >= 8 |
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17 | #define DEF_MEM_LEVEL 8 |
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18 | #else |
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19 | #define DEF_MEM_LEVEL MAX_MEM_LEVEL |
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20 | #endif |
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21 | |
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22 | |
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23 | #define CHECK_ERR(err, msg) { \ |
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24 | if (err != Z_OK && err != Z_STREAM_END) { \ |
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25 | fprintf(stderr, "%s error: %d\n", msg, err); \ |
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26 | return SZ_NSCS; \ |
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27 | } \ |
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28 | } |
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29 | |
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30 | int isZlibFormat(unsigned char magic1, unsigned char magic2) |
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31 | { |
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32 | if(magic1==104&&magic2==5) //DC+BS |
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33 | return 1; |
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34 | if(magic1==104&&magic2==129) //DC+DC |
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35 | return 1; |
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36 | if(magic1==104&&magic2==222) //DC+BC |
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37 | return 1; |
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38 | if(magic1==120&&magic2==1) //BC+BS |
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39 | return 1; |
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40 | if(magic1==120&&magic2==94) //BC+? |
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41 | return 1; |
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42 | if(magic1==120&&magic2==156) //BC+DC |
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43 | return 1; |
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44 | if(magic1==120&&magic2==218) //BC+BS |
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45 | return 1; |
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46 | return 0; |
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47 | } |
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48 | |
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49 | /*zlib_compress() is only valid for median-size data compression. */ |
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50 | unsigned long zlib_compress(unsigned char* data, unsigned long dataLength, unsigned char** compressBytes, int level) |
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51 | { |
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52 | z_stream stream = {0}; |
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53 | |
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54 | stream.next_in = data; |
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55 | stream.avail_in = dataLength; |
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56 | #ifdef MAXSEG_64K |
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57 | /* Check for source > 64K on 16-bit machine: */ |
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58 | if ((uLong)stream.avail_in != dataLength) return Z_BUF_ERROR; |
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59 | #endif |
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60 | |
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61 | uLong estCmpLen = deflateBound(&stream, dataLength); |
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62 | unsigned long outSize = estCmpLen; |
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63 | |
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64 | *compressBytes = (unsigned char*)malloc(sizeof(unsigned char)*estCmpLen); |
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65 | int err = compress2(*compressBytes, &outSize, data, dataLength, level); |
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66 | if(err!=Z_OK) |
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67 | { |
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68 | printf("Error: err_code=%d; the reason may be your data size is too large (>=2^32), which cannot be compressed by standalone zlib_compress. Sol: inflace_init, ....\n", err); |
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69 | exit(0); |
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70 | } |
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71 | return outSize; |
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72 | } |
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73 | |
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74 | unsigned long zlib_compress2(unsigned char* data, unsigned long dataLength, unsigned char** compressBytes, int level) |
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75 | { |
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76 | unsigned long outSize; |
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77 | |
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78 | z_stream stream = {0}; |
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79 | int err; |
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80 | |
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81 | stream.next_in = data; |
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82 | stream.avail_in = dataLength; |
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83 | #ifdef MAXSEG_64K |
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84 | /* Check for source > 64K on 16-bit machine: */ |
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85 | if ((uLong)stream.avail_in != dataLength) return Z_BUF_ERROR; |
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86 | #endif |
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87 | |
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88 | uLong estCmpLen = deflateBound(&stream, dataLength); |
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89 | *compressBytes = (unsigned char*)malloc(sizeof(unsigned char)*estCmpLen); |
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90 | |
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91 | stream.next_out = *compressBytes; |
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92 | stream.avail_out = estCmpLen; |
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93 | //stream.avail_out = dataLength*10; |
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94 | //if ((uLong)stream.avail_out != dataLength*10) return Z_BUF_ERROR; |
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95 | |
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96 | stream.zalloc = (alloc_func)0; |
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97 | stream.zfree = (free_func)0; |
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98 | stream.opaque = (voidpf)0; |
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99 | // stream.data_type = Z_TEXT; |
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100 | |
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101 | //err = deflateInit(&stream, level); //default windowBits == 15. |
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102 | int windowBits = 14; //8-15 |
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103 | if(confparams_cpr->szMode==SZ_BEST_COMPRESSION) |
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104 | windowBits = 15; |
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105 | |
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106 | err = deflateInit2(&stream, level, Z_DEFLATED, windowBits, DEF_MEM_LEVEL, |
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107 | Z_DEFAULT_STRATEGY);//Z_FIXED); //Z_DEFAULT_STRATEGY |
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108 | if (err != Z_OK) return err; |
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109 | |
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110 | err = deflate(&stream, Z_FINISH); |
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111 | if (err != Z_STREAM_END) { |
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112 | deflateEnd(&stream); |
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113 | return err == Z_OK ? Z_BUF_ERROR : err; |
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114 | } |
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115 | |
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116 | err = deflateEnd(&stream); |
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117 | |
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118 | outSize = stream.total_out; |
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119 | return outSize; |
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120 | } |
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121 | |
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122 | unsigned long zlib_compress3(unsigned char* data, unsigned long dataLength, unsigned char* compressBytes, int level) |
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123 | { |
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124 | unsigned long outSize = 0; |
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125 | |
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126 | z_stream stream = {0}; |
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127 | int err; |
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128 | |
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129 | stream.next_in = data; |
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130 | stream.avail_in = dataLength; |
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131 | #ifdef MAXSEG_64K |
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132 | /* Check for source > 64K on 16-bit machine: */ |
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133 | if ((uLong)stream.avail_in != dataLength) return Z_BUF_ERROR; |
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134 | #endif |
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135 | |
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136 | stream.next_out = compressBytes; |
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137 | stream.avail_out = dataLength; |
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138 | stream.zalloc = (alloc_func)0; |
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139 | stream.zfree = (free_func)0; |
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140 | stream.opaque = (voidpf)0; |
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141 | |
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142 | //err = deflateInit(&stream, level); //default windowBits == 15. |
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143 | int windowBits = 14; //8-15 |
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144 | if(confparams_cpr->szMode==SZ_BEST_COMPRESSION) |
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145 | windowBits = 15; |
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146 | |
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147 | err = deflateInit2(&stream, level, Z_DEFLATED, windowBits, DEF_MEM_LEVEL, |
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148 | Z_DEFAULT_STRATEGY);//Z_FIXED); //Z_DEFAULT_STRATEGY |
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149 | if (err != Z_OK) return err; |
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150 | |
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151 | err = deflate(&stream, Z_FINISH); |
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152 | if (err != Z_STREAM_END) { |
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153 | deflateEnd(&stream); |
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154 | return err == Z_OK ? Z_BUF_ERROR : err; |
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155 | } |
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156 | |
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157 | err = deflateEnd(&stream); |
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158 | |
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159 | outSize = stream.total_out; |
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160 | return outSize; |
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161 | } |
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162 | |
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163 | unsigned long zlib_compress4(unsigned char* data, unsigned long dataLength, unsigned char** compressBytes, int level) |
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164 | { |
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165 | z_stream c_stream = {0}; /* compression stream */ |
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166 | int err = 0; |
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167 | |
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168 | c_stream.zalloc = (alloc_func)0; |
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169 | c_stream.zfree = (free_func)0; |
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170 | c_stream.opaque = (voidpf)0; |
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171 | |
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172 | int windowBits = 14; //8-15 |
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173 | if(confparams_cpr->szMode==SZ_BEST_COMPRESSION) |
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174 | windowBits = 15; |
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175 | |
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176 | err = deflateInit2(&c_stream, level, Z_DEFLATED, windowBits, DEF_MEM_LEVEL, |
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177 | Z_DEFAULT_STRATEGY);//Z_FIXED); //Z_DEFAULT_STRATEGY |
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178 | CHECK_ERR(err, "deflateInit"); |
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179 | |
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180 | uLong estCmpLen = deflateBound(&c_stream, dataLength); |
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181 | *compressBytes = (unsigned char*)malloc(sizeof(unsigned char)*estCmpLen); |
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182 | |
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183 | c_stream.next_in = data; |
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184 | c_stream.next_out = *compressBytes; |
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185 | |
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186 | while (c_stream.total_in < dataLength && c_stream.total_out < estCmpLen) { |
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187 | c_stream.avail_in = c_stream.avail_out = SZ_ZLIB_BUFFER_SIZE; /* force small buffers */ |
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188 | err = deflate(&c_stream, Z_NO_FLUSH); |
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189 | CHECK_ERR(err, "deflate"); |
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190 | } |
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191 | /* Finish the stream, still forcing small buffers: */ |
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192 | for (;;) { |
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193 | c_stream.avail_out = 1; |
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194 | err = deflate(&c_stream, Z_FINISH); |
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195 | if (err == Z_STREAM_END) break; |
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196 | CHECK_ERR(err, "deflate"); |
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197 | } |
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198 | |
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199 | err = deflateEnd(&c_stream); |
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200 | CHECK_ERR(err, "deflateEnd"); |
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201 | |
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202 | return c_stream.total_out; |
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203 | } |
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204 | |
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205 | unsigned long zlib_compress5(unsigned char* data, unsigned long dataLength, unsigned char** compressBytes, int level) |
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206 | { |
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207 | int ret, flush; |
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208 | unsigned have; |
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209 | z_stream strm; |
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210 | unsigned char* in = data; |
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211 | |
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212 | /* allocate deflate state */ |
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213 | strm.zalloc = Z_NULL; |
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214 | strm.zfree = Z_NULL; |
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215 | strm.opaque = Z_NULL; |
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216 | ret = deflateInit(&strm, level); |
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217 | //int windowBits = 15; |
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218 | //ret = deflateInit2(&strm, level, Z_DEFLATED, windowBits, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);//Z_FIXED); //Z_DEFAULT_STRATEGY |
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219 | |
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220 | if (ret != Z_OK) |
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221 | return ret; |
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222 | |
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223 | size_t p_size = 0, av_in = 0; |
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224 | uLong estCmpLen = deflateBound(&strm, dataLength); |
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225 | *compressBytes = (unsigned char*)malloc(sizeof(unsigned char)*estCmpLen); |
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226 | unsigned char* out = *compressBytes; |
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227 | |
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228 | /* compress until end of file */ |
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229 | do { |
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230 | p_size += SZ_ZLIB_BUFFER_SIZE; |
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231 | if(p_size>=dataLength) |
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232 | { |
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233 | av_in = dataLength - (p_size - SZ_ZLIB_BUFFER_SIZE); |
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234 | flush = Z_FINISH; |
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235 | } |
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236 | else |
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237 | { |
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238 | av_in = SZ_ZLIB_BUFFER_SIZE; |
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239 | flush = Z_NO_FLUSH; |
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240 | } |
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241 | strm.avail_in = av_in; |
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242 | strm.next_in = in; |
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243 | |
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244 | /* run deflate() on input until output buffer not full, finish |
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245 | compression if all of source has been read in */ |
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246 | do { |
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247 | strm.avail_out = SZ_ZLIB_BUFFER_SIZE; |
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248 | strm.next_out = out; |
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249 | ret = deflate(&strm, flush); /* no bad return value */ |
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250 | |
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251 | have = SZ_ZLIB_BUFFER_SIZE - strm.avail_out; |
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252 | out += have; |
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253 | } while (strm.avail_out == 0); |
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254 | |
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255 | in+=av_in; |
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256 | |
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257 | /* done when last data in file processed */ |
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258 | } while (flush != Z_FINISH); |
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259 | |
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260 | /* clean up and return */ |
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261 | (void)deflateEnd(&strm); |
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262 | |
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263 | return strm.total_out; |
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264 | } |
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265 | |
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266 | unsigned long zlib_uncompress(unsigned char* compressBytes, unsigned long cmpSize, unsigned char** oriData, unsigned long targetOriSize) |
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267 | { |
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268 | unsigned long outSize = targetOriSize; |
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269 | *oriData = (unsigned char*)malloc(sizeof(unsigned char)*targetOriSize); |
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270 | int status = uncompress(*oriData, &outSize, compressBytes, cmpSize); |
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271 | if(status!=Z_OK) |
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272 | { |
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273 | printf("Error: Zlib decompression error; status=%d\n", status); |
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274 | exit(0); |
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275 | } |
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276 | |
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277 | return outSize; |
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278 | } |
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279 | |
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280 | unsigned long zlib_uncompress2 (unsigned char* compressBytes, unsigned long cmpSize, unsigned char** oriData, unsigned long targetOriSize) |
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281 | { |
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282 | z_stream stream = {0}; |
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283 | |
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284 | unsigned long outSize; |
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285 | *oriData = (unsigned char*)malloc(sizeof(unsigned char)*targetOriSize); |
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286 | |
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287 | stream.zalloc = Z_NULL; |
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288 | stream.zfree = Z_NULL; |
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289 | stream.opaque = Z_NULL; |
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290 | // stream.data_type = Z_TEXT; |
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291 | |
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292 | stream.next_in = compressBytes; |
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293 | stream.avail_in = cmpSize; |
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294 | /* Check for source > 64K on 16-bit machine: */ |
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295 | if ((unsigned long)stream.avail_in != cmpSize) |
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296 | { |
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297 | printf("Error: zlib_uncompress2: stream.avail_in != cmpSize"); |
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298 | //exit(1); |
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299 | return SZ_NSCS; //-1 |
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300 | } |
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301 | |
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302 | stream.next_out = *oriData; |
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303 | stream.avail_out = targetOriSize; |
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304 | //if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; |
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305 | |
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306 | int err = inflateInit(&stream); |
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307 | //int windowBits = 15; |
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308 | //int err = inflateInit2(&stream, windowBits); |
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309 | if (err != Z_OK) |
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310 | { |
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311 | printf("Error: zlib_uncompress2: err != Z_OK\n"); |
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312 | return SZ_NSCS; |
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313 | } |
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314 | |
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315 | err = inflate(&stream, Z_FINISH); |
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316 | if (err != Z_STREAM_END) { |
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317 | inflateEnd(&stream); |
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318 | if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0)) |
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319 | return Z_DATA_ERROR; |
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320 | return err; |
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321 | } |
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322 | outSize = stream.total_out; |
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323 | inflateEnd(&stream); |
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324 | return outSize; |
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325 | } |
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326 | |
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327 | unsigned long zlib_uncompress3(unsigned char* compressBytes, unsigned long cmpSize, unsigned char** oriData, unsigned long targetOriSize) |
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328 | { |
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329 | int status; |
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330 | z_stream z_strm; /* decompression stream */ |
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331 | |
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332 | size_t nalloc = 65536*4; |
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333 | |
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334 | *oriData = (unsigned char*)malloc(sizeof(unsigned char)*targetOriSize); |
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335 | memset(&z_strm, 0, sizeof(z_strm)); |
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336 | |
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337 | |
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338 | /*d_stream.zalloc = (alloc_func)0; |
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339 | d_stream.zfree = (free_func)0; |
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340 | d_stream.opaque = (voidpf)0;*/ |
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341 | |
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342 | z_strm.next_in = compressBytes; |
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343 | z_strm.avail_in = 0; |
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344 | z_strm.next_out = *oriData; |
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345 | z_strm.avail_out = targetOriSize; |
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346 | |
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347 | status = inflateInit(&z_strm); |
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348 | CHECK_ERR(status, "inflateInit"); |
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349 | |
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350 | do{ |
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351 | z_strm.avail_in = z_strm.avail_out = SZ_ZLIB_BUFFER_SIZE; /* force small buffers */ |
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352 | /* Uncompress some data */ |
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353 | status = inflate(&z_strm, Z_SYNC_FLUSH); |
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354 | |
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355 | /* Check if we are done uncompressing data */ |
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356 | if (Z_STREAM_END==status) |
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357 | break; /*done*/ |
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358 | |
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359 | if (Z_OK!=status) { |
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360 | (void)inflateEnd(&z_strm); |
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361 | printf("Error: inflate() failed\n"); |
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362 | exit(0); |
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363 | } |
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364 | else |
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365 | { |
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366 | /* If we're not done and just ran out of buffer space, get more */ |
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367 | if(0 == z_strm.avail_out) { |
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368 | void *new_outbuf; /* Pointer to new output buffer */ |
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369 | |
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370 | /* Allocate a buffer twice as big */ |
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371 | nalloc *= 2; |
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372 | if(NULL == (new_outbuf = realloc(*oriData, nalloc))) { |
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373 | (void)inflateEnd(&z_strm); |
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374 | printf("Error: memory allocation failed for deflate uncompression\n"); |
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375 | exit(0); |
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376 | } /* end if */ |
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377 | *oriData = new_outbuf; |
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378 | |
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379 | /* Update pointers to buffer for next set of uncompressed data */ |
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380 | z_strm.next_out = (*oriData) + z_strm.total_out; |
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381 | z_strm.avail_out = (uInt)(nalloc - z_strm.total_out); |
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382 | } /* end if */ |
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383 | } /* end else*/ |
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384 | }while(status==Z_OK); |
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385 | |
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386 | status = inflateEnd(&z_strm); |
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387 | CHECK_ERR(status, "inflateEnd"); |
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388 | |
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389 | return z_strm.total_out; |
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390 | } |
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391 | |
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392 | unsigned long zlib_uncompress4(unsigned char* compressBytes, unsigned long cmpSize, unsigned char** oriData, unsigned long targetOriSize) |
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393 | { |
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394 | int ret; |
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395 | unsigned int have; |
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396 | z_stream strm; |
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397 | unsigned char *in = compressBytes; |
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398 | unsigned char *out; |
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399 | |
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400 | *oriData = (unsigned char*)malloc(sizeof(unsigned char)*targetOriSize); |
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401 | out = *oriData; |
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402 | |
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403 | /* allocate inflate state */ |
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404 | strm.zalloc = Z_NULL; |
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405 | strm.zfree = Z_NULL; |
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406 | strm.opaque = Z_NULL; |
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407 | strm.avail_in = 0; |
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408 | strm.next_in = Z_NULL; |
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409 | ret = inflateInit(&strm); |
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410 | if (ret != Z_OK) |
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411 | { |
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412 | return ret; |
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413 | } |
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414 | |
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415 | size_t p_size = 0, av_in = 0; |
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416 | /* decompress until deflate stream ends or end of file */ |
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417 | do { |
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418 | p_size += SZ_ZLIB_BUFFER_SIZE; |
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419 | if(p_size>cmpSize) |
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420 | av_in = cmpSize - (p_size - SZ_ZLIB_BUFFER_SIZE); |
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421 | else |
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422 | av_in = SZ_ZLIB_BUFFER_SIZE; |
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423 | strm.avail_in = av_in; |
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424 | |
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425 | if (strm.avail_in == 0) |
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426 | break; |
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427 | strm.next_in = in; |
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428 | |
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429 | /* run inflate() on input until output buffer not full */ |
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430 | do { |
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431 | strm.avail_out = SZ_ZLIB_BUFFER_SIZE; |
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432 | strm.next_out = out; |
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433 | ret = inflate(&strm, Z_NO_FLUSH); |
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434 | //assert(ret != Z_STREAM_ERROR); /* state not clobbered */ |
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435 | switch (ret) { |
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436 | case Z_NEED_DICT: |
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437 | ret = Z_DATA_ERROR; /* and fall through */ |
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438 | case Z_DATA_ERROR: |
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439 | case Z_MEM_ERROR: |
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440 | (void)inflateEnd(&strm); |
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441 | return ret; |
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442 | } |
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443 | have = SZ_ZLIB_BUFFER_SIZE - strm.avail_out; |
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444 | |
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445 | out += have; |
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446 | |
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447 | } while (strm.avail_out == 0); |
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448 | |
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449 | in+=av_in; |
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450 | /* done when inflate() says it's done */ |
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451 | } while (ret != Z_STREAM_END); |
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452 | |
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453 | /* clean up and return */ |
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454 | (void)inflateEnd(&strm); |
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455 | |
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456 | return strm.total_out; |
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457 | } |
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458 | |
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459 | unsigned long zlib_uncompress65536bytes(unsigned char* compressBytes, unsigned long cmpSize, unsigned char** oriData) |
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460 | { |
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461 | int err; |
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462 | unsigned long targetOriSize = 65536; |
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463 | z_stream d_stream = {0}; /* decompression stream */ |
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464 | |
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465 | *oriData = (unsigned char*)malloc(sizeof(unsigned char)*targetOriSize); |
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466 | |
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467 | d_stream.zalloc = (alloc_func)0; |
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468 | d_stream.zfree = (free_func)0; |
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469 | d_stream.opaque = (voidpf)0; |
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470 | |
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471 | d_stream.next_in = compressBytes; |
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472 | d_stream.avail_in = 0; |
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473 | d_stream.next_out = *oriData; |
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474 | |
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475 | err = inflateInit(&d_stream); |
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476 | CHECK_ERR(err, "inflateInit"); |
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477 | |
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478 | while (d_stream.total_out < targetOriSize && d_stream.total_in < cmpSize) { |
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479 | d_stream.avail_in = d_stream.avail_out = SZ_ZLIB_BUFFER_SIZE; /* force small buffers */ |
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480 | //err = inflate(&d_stream, Z_NO_FLUSH); |
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481 | err = inflate(&d_stream, Z_SYNC_FLUSH); |
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482 | if (err == Z_STREAM_END) break; |
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483 | if(err<0) |
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484 | break; |
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485 | } |
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486 | |
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487 | if(err<0) |
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488 | return d_stream.total_out; |
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489 | err = inflateEnd(&d_stream); |
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490 | |
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491 | CHECK_ERR(err, "inflateEnd"); |
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492 | |
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493 | return d_stream.total_out; |
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494 | } |
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495 | |
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496 | unsigned long zlib_uncompress5(unsigned char* compressBytes, unsigned long cmpSize, unsigned char** oriData, unsigned long targetOriSize) |
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497 | { |
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498 | int err; |
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499 | z_stream d_stream = {0}; /* decompression stream */ |
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500 | |
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501 | *oriData = (unsigned char*)malloc(sizeof(unsigned char)*targetOriSize); |
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502 | |
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503 | d_stream.zalloc = (alloc_func)0; |
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504 | d_stream.zfree = (free_func)0; |
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505 | d_stream.opaque = (voidpf)0; |
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506 | |
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507 | d_stream.next_in = compressBytes; |
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508 | d_stream.avail_in = 0; |
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509 | d_stream.next_out = *oriData; |
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510 | |
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511 | err = inflateInit(&d_stream); |
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512 | CHECK_ERR(err, "inflateInit"); |
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513 | |
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514 | while (d_stream.total_out < targetOriSize && d_stream.total_in < cmpSize) { |
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515 | d_stream.avail_in = d_stream.avail_out = SZ_ZLIB_BUFFER_SIZE; /* force small buffers */ |
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516 | //err = inflate(&d_stream, Z_NO_FLUSH); |
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517 | err = inflate(&d_stream, Z_SYNC_FLUSH); |
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518 | if (err == Z_STREAM_END) break; |
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519 | CHECK_ERR(err, "inflate"); |
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520 | } |
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521 | |
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522 | err = inflateEnd(&d_stream); |
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523 | |
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524 | CHECK_ERR(err, "inflateEnd"); |
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525 | |
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526 | return d_stream.total_out; |
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527 | } |
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