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