1 | /** |
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2 | * @file sz.c |
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3 | * @author Sheng Di and Dingwen Tao |
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4 | * @date Aug, 2016 |
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5 | * @brief SZ_Init, 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 | |
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11 | #include <stdio.h> |
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12 | #include <stdlib.h> |
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13 | #include <string.h> |
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14 | #include <unistd.h> |
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15 | #include "sz.h" |
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16 | #include "CompressElement.h" |
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17 | #include "DynamicByteArray.h" |
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18 | #include "DynamicIntArray.h" |
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19 | #include "TightDataPointStorageD.h" |
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20 | #include "TightDataPointStorageF.h" |
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21 | #include "zlib.h" |
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22 | #include "rw.h" |
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23 | #include "Huffman.h" |
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24 | #include "conf.h" |
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25 | #include "utility.h" |
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26 | //#include "CurveFillingCompressStorage.h" |
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27 | |
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28 | int versionNumber[4] = {SZ_VER_MAJOR,SZ_VER_MINOR,SZ_VER_BUILD,SZ_VER_REVISION}; |
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29 | //int SZ_SIZE_TYPE = 8; |
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30 | |
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31 | int dataEndianType = LITTLE_ENDIAN_DATA; //*endian type of the data read from disk |
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32 | int sysEndianType; //*sysEndianType is actually set automatically. |
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33 | |
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34 | //the confparams should be separate between compression and decopmression, in case of mutual-affection when calling compression/decompression alternatively |
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35 | sz_params *confparams_cpr = NULL; //used for compression |
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36 | sz_params *confparams_dec = NULL; //used for decompression |
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37 | |
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38 | sz_exedata *exe_params = NULL; |
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39 | |
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40 | int sz_with_regression = SZ_WITH_LINEAR_REGRESSION; //SZ_NO_REGRESSION |
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41 | |
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42 | /*following global variables are desgined for time-series based compression*/ |
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43 | /*sz_varset is not used in the single-snapshot data compression*/ |
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44 | SZ_VarSet* sz_varset = NULL; |
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45 | sz_multisteps *multisteps = NULL; |
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46 | sz_tsc_metadata *sz_tsc = NULL; |
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47 | |
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48 | //only for Pastri compressor |
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49 | #ifdef PASTRI |
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50 | pastri_params pastri_par; |
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51 | #endif |
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52 | |
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53 | HuffmanTree* SZ_Reset() |
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54 | { |
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55 | return createDefaultHuffmanTree(); |
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56 | } |
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57 | |
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58 | int SZ_Init(const char *configFilePath) |
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59 | { |
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60 | int loadFileResult = SZ_LoadConf(configFilePath); |
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61 | if(loadFileResult==SZ_NSCS) |
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62 | return SZ_NSCS; |
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63 | |
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64 | exe_params->SZ_SIZE_TYPE = sizeof(size_t); |
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65 | |
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66 | if(confparams_cpr->szMode == SZ_TEMPORAL_COMPRESSION) |
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67 | { |
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68 | initSZ_TSC(); |
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69 | } |
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70 | return SZ_SCES; |
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71 | } |
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72 | |
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73 | int SZ_Init_Params(sz_params *params) |
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74 | { |
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75 | SZ_Init(NULL); |
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76 | |
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77 | if(params->losslessCompressor!=GZIP_COMPRESSOR && params->losslessCompressor!=ZSTD_COMPRESSOR) |
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78 | params->losslessCompressor = ZSTD_COMPRESSOR; |
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79 | |
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80 | if(params->max_quant_intervals > 0) |
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81 | params->maxRangeRadius = params->max_quant_intervals/2; |
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82 | |
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83 | memcpy(confparams_cpr, params, sizeof(sz_params)); |
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84 | |
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85 | if(params->quantization_intervals%2!=0) |
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86 | { |
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87 | printf("Error: quantization_intervals must be an even number!\n"); |
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88 | return SZ_NSCS; |
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89 | } |
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90 | |
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91 | return SZ_SCES; |
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92 | } |
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93 | |
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94 | int computeDimension(size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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95 | { |
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96 | int dimension; |
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97 | if(r1==0) |
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98 | { |
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99 | dimension = 0; |
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100 | } |
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101 | else if(r2==0) |
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102 | { |
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103 | dimension = 1; |
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104 | } |
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105 | else if(r3==0) |
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106 | { |
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107 | dimension = 2; |
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108 | } |
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109 | else if(r4==0) |
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110 | { |
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111 | dimension = 3; |
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112 | } |
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113 | else if(r5==0) |
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114 | { |
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115 | dimension = 4; |
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116 | } |
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117 | else |
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118 | { |
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119 | dimension = 5; |
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120 | } |
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121 | return dimension; |
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122 | } |
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123 | |
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124 | size_t computeDataLength(size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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125 | { |
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126 | size_t dataLength; |
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127 | if(r1==0) |
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128 | { |
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129 | dataLength = 0; |
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130 | } |
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131 | else if(r2==0) |
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132 | { |
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133 | dataLength = r1; |
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134 | } |
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135 | else if(r3==0) |
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136 | { |
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137 | dataLength = r1*r2; |
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138 | } |
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139 | else if(r4==0) |
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140 | { |
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141 | dataLength = r1*r2*r3; |
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142 | } |
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143 | else if(r5==0) |
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144 | { |
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145 | dataLength = r1*r2*r3*r4; |
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146 | } |
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147 | else |
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148 | { |
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149 | dataLength = r1*r2*r3*r4*r5; |
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150 | } |
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151 | return dataLength; |
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152 | } |
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153 | |
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154 | /*-------------------------------------------------------------------------*/ |
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155 | /** |
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156 | @brief Perform Compression |
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157 | @param data data to be compressed |
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158 | @param outSize the size (in bytes) after compression |
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159 | @param r5,r4,r3,r2,r1 the sizes of each dimension (supporting only 5 dimensions at most in this version. |
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160 | @return compressed data (in binary stream) or NULL(0) if any errors |
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161 | |
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162 | **/ |
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163 | /*-------------------------------------------------------------------------*/ |
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164 | unsigned char* SZ_compress_args(int dataType, void *data, size_t *outSize, int errBoundMode, double absErrBound, |
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165 | double relBoundRatio, double pwrBoundRatio, size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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166 | { |
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167 | //TODO |
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168 | confparams_cpr->dataType = dataType; |
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169 | if(dataType==SZ_FLOAT) |
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170 | { |
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171 | unsigned char *newByteData = NULL; |
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172 | |
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173 | SZ_compress_args_float(&newByteData, (float *)data, r5, r4, r3, r2, r1, |
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174 | outSize, errBoundMode, absErrBound, relBoundRatio, pwrBoundRatio); |
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175 | |
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176 | return newByteData; |
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177 | } |
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178 | else if(dataType==SZ_DOUBLE) |
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179 | { |
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180 | unsigned char *newByteData; |
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181 | SZ_compress_args_double(&newByteData, (double *)data, r5, r4, r3, r2, r1, |
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182 | outSize, errBoundMode, absErrBound, relBoundRatio, pwrBoundRatio); |
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183 | |
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184 | return newByteData; |
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185 | } |
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186 | else if(dataType==SZ_INT64) |
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187 | { |
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188 | unsigned char *newByteData; |
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189 | SZ_compress_args_int64(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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190 | return newByteData; |
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191 | } |
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192 | else if(dataType==SZ_INT32) //int type |
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193 | { |
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194 | unsigned char *newByteData; |
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195 | SZ_compress_args_int32(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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196 | return newByteData; |
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197 | } |
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198 | else if(dataType==SZ_INT16) |
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199 | { |
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200 | unsigned char *newByteData; |
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201 | SZ_compress_args_int16(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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202 | return newByteData; |
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203 | } |
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204 | else if(dataType==SZ_INT8) |
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205 | { |
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206 | unsigned char *newByteData; |
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207 | SZ_compress_args_int8(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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208 | return newByteData; |
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209 | } |
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210 | else if(dataType==SZ_UINT64) |
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211 | { |
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212 | unsigned char *newByteData; |
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213 | SZ_compress_args_uint64(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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214 | return newByteData; |
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215 | } |
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216 | else if(dataType==SZ_UINT32) //int type |
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217 | { |
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218 | unsigned char *newByteData; |
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219 | SZ_compress_args_uint32(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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220 | return newByteData; |
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221 | } |
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222 | else if(dataType==SZ_UINT16) |
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223 | { |
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224 | unsigned char *newByteData; |
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225 | SZ_compress_args_uint16(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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226 | return newByteData; |
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227 | } |
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228 | else if(dataType==SZ_UINT8) |
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229 | { |
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230 | unsigned char *newByteData; |
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231 | SZ_compress_args_uint8(&newByteData, data, r5, r4, r3, r2, r1, outSize, errBoundMode, absErrBound, relBoundRatio); |
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232 | return newByteData; |
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233 | } |
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234 | else |
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235 | { |
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236 | printf("Error: dataType can only be SZ_FLOAT, SZ_DOUBLE, SZ_INT8/16/32/64 or SZ_UINT8/16/32/64.\n"); |
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237 | return NULL; |
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238 | } |
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239 | } |
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240 | |
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241 | int SZ_compress_args2(int dataType, void *data, unsigned char* compressed_bytes, size_t *outSize, |
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242 | int errBoundMode, double absErrBound, double relBoundRatio, double pwrBoundRatio, |
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243 | size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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244 | { |
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245 | unsigned char* bytes = SZ_compress_args(dataType, data, outSize, errBoundMode, absErrBound, relBoundRatio, pwrBoundRatio, r5, r4, r3, r2, r1); |
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246 | memcpy(compressed_bytes, bytes, *outSize); |
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247 | free(bytes); |
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248 | return SZ_SCES; |
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249 | } |
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250 | |
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251 | int SZ_compress_args3(int dataType, void *data, unsigned char* compressed_bytes, size_t *outSize, int errBoundMode, double absErrBound, double relBoundRatio, |
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252 | size_t r5, size_t r4, size_t r3, size_t r2, size_t r1, |
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253 | size_t s5, size_t s4, size_t s3, size_t s2, size_t s1, |
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254 | size_t e5, size_t e4, size_t e3, size_t e2, size_t e1) |
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255 | { |
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256 | confparams_cpr->dataType = dataType; |
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257 | if(dataType==SZ_FLOAT) |
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258 | { |
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259 | SZ_compress_args_float_subblock(compressed_bytes, (float *)data, |
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260 | r5, r4, r3, r2, r1, |
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261 | s5, s4, s3, s2, s1, |
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262 | e5, e4, e3, e2, e1, |
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263 | outSize, errBoundMode, absErrBound, relBoundRatio); |
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264 | |
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265 | return SZ_SCES; |
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266 | } |
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267 | else if(dataType==SZ_DOUBLE) |
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268 | { |
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269 | SZ_compress_args_double_subblock(compressed_bytes, (double *)data, |
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270 | r5, r4, r3, r2, r1, |
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271 | s5, s4, s3, s2, s1, |
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272 | e5, e4, e3, e2, e1, |
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273 | outSize, errBoundMode, absErrBound, relBoundRatio); |
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274 | |
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275 | return SZ_SCES; |
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276 | } |
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277 | else |
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278 | { |
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279 | printf("Error (in SZ_compress_args3): dataType can only be SZ_FLOAT or SZ_DOUBLE.\n"); |
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280 | return SZ_NSCS; |
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281 | } |
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282 | } |
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283 | |
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284 | unsigned char *SZ_compress(int dataType, void *data, size_t *outSize, size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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285 | { |
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286 | unsigned char *newByteData = SZ_compress_args(dataType, data, outSize, confparams_cpr->errorBoundMode, confparams_cpr->absErrBound, confparams_cpr->relBoundRatio, |
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287 | confparams_cpr->pw_relBoundRatio, r5, r4, r3, r2, r1); |
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288 | return newByteData; |
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289 | } |
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290 | |
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291 | ////////////////// |
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292 | /*-------------------------------------------------------------------------*/ |
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293 | /** |
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294 | @brief Perform Compression |
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295 | @param data data to be compressed |
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296 | @param reservedValue the reserved value |
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297 | @param outSize the size (in bytes) after compression |
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298 | @param r5,r4,r3,r2,r1 the sizes of each dimension (supporting only 5 dimensions at most in this version. |
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299 | @return compressed data (in binary stream) |
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300 | |
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301 | **/ |
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302 | /*-------------------------------------------------------------------------*/ |
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303 | unsigned char *SZ_compress_rev_args(int dataType, void *data, void *reservedValue, size_t *outSize, int errBoundMode, double absErrBound, double relBoundRatio, |
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304 | size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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305 | { |
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306 | unsigned char *newByteData; |
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307 | //TODO |
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308 | printf("SZ compression with reserved data is TO BE DONE LATER.\n"); |
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309 | exit(0); |
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310 | |
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311 | return newByteData; |
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312 | } |
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313 | |
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314 | int SZ_compress_rev_args2(int dataType, void *data, void *reservedValue, unsigned char* compressed_bytes, size_t *outSize, int errBoundMode, double absErrBound, double relBoundRatio, |
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315 | size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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316 | { |
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317 | confparams_cpr->dataType = dataType; |
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318 | unsigned char* bytes = SZ_compress_rev_args(dataType, data, reservedValue, outSize, errBoundMode, absErrBound, relBoundRatio, r5, r4, r3, r2, r1); |
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319 | memcpy(compressed_bytes, bytes, *outSize); |
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320 | free(bytes); //free(bytes) is removed , because of dump error at MIRA system (PPC architecture), fixed? |
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321 | return 0; |
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322 | } |
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323 | |
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324 | unsigned char *SZ_compress_rev(int dataType, void *data, void *reservedValue, size_t *outSize, size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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325 | { |
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326 | unsigned char *newByteData; |
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327 | //TODO |
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328 | printf("SZ compression with reserved data is TO BE DONE LATER.\n"); |
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329 | exit(0); |
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330 | |
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331 | return newByteData; |
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332 | } |
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333 | |
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334 | void *SZ_decompress(int dataType, unsigned char *bytes, size_t byteLength, size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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335 | { |
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336 | if(confparams_dec==NULL) |
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337 | confparams_dec = (sz_params*)malloc(sizeof(sz_params)); |
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338 | memset(confparams_dec, 0, sizeof(sz_params)); |
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339 | if(exe_params==NULL) |
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340 | exe_params = (sz_exedata*)malloc(sizeof(sz_exedata)); |
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341 | memset(exe_params, 0, sizeof(sz_exedata)); |
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342 | |
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343 | int x = 1; |
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344 | char *y = (char*)&x; |
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345 | if(*y==1) |
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346 | sysEndianType = LITTLE_ENDIAN_SYSTEM; |
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347 | else //=0 |
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348 | sysEndianType = BIG_ENDIAN_SYSTEM; |
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349 | |
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350 | if(dataType == SZ_FLOAT) |
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351 | { |
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352 | float *newFloatData; |
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353 | SZ_decompress_args_float(&newFloatData, r5, r4, r3, r2, r1, bytes, byteLength); |
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354 | return newFloatData; |
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355 | } |
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356 | else if(dataType == SZ_DOUBLE) |
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357 | { |
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358 | double *newDoubleData; |
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359 | SZ_decompress_args_double(&newDoubleData, r5, r4, r3, r2, r1, bytes, byteLength); |
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360 | return newDoubleData; |
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361 | } |
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362 | else if(dataType == SZ_INT8) |
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363 | { |
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364 | int8_t *newInt8Data; |
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365 | SZ_decompress_args_int8(&newInt8Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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366 | return newInt8Data; |
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367 | } |
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368 | else if(dataType == SZ_INT16) |
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369 | { |
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370 | int16_t *newInt16Data; |
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371 | SZ_decompress_args_int16(&newInt16Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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372 | return newInt16Data; |
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373 | } |
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374 | else if(dataType == SZ_INT32) |
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375 | { |
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376 | int32_t *newInt32Data; |
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377 | SZ_decompress_args_int32(&newInt32Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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378 | return newInt32Data; |
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379 | } |
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380 | else if(dataType == SZ_INT64) |
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381 | { |
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382 | int64_t *newInt64Data; |
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383 | SZ_decompress_args_int64(&newInt64Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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384 | return newInt64Data; |
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385 | } |
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386 | else if(dataType == SZ_UINT8) |
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387 | { |
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388 | uint8_t *newUInt8Data; |
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389 | SZ_decompress_args_uint8(&newUInt8Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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390 | return newUInt8Data; |
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391 | } |
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392 | else if(dataType == SZ_UINT16) |
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393 | { |
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394 | uint16_t *newUInt16Data; |
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395 | SZ_decompress_args_uint16(&newUInt16Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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396 | return newUInt16Data; |
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397 | } |
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398 | else if(dataType == SZ_UINT32) |
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399 | { |
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400 | uint32_t *newUInt32Data; |
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401 | SZ_decompress_args_uint32(&newUInt32Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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402 | return newUInt32Data; |
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403 | } |
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404 | else if(dataType == SZ_UINT64) |
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405 | { |
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406 | uint64_t *newUInt64Data; |
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407 | SZ_decompress_args_uint64(&newUInt64Data, r5, r4, r3, r2, r1, bytes, byteLength); |
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408 | return newUInt64Data; |
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409 | } |
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410 | else |
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411 | { |
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412 | printf("Error: data type cannot be the types other than SZ_FLOAT or SZ_DOUBLE\n"); |
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413 | return NULL; |
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414 | } |
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415 | } |
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416 | |
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417 | /** |
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418 | * |
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419 | * |
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420 | * return number of elements or -1 if any errors |
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421 | * */ |
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422 | size_t SZ_decompress_args(int dataType, unsigned char *bytes, size_t byteLength, void* decompressed_array, size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
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423 | { |
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424 | //size_t i; |
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425 | size_t nbEle = computeDataLength(r5,r4,r3,r2,r1); |
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426 | |
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427 | if(dataType == SZ_FLOAT) |
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428 | { |
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429 | float* data = (float *)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
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430 | float* data_array = (float *)decompressed_array; |
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431 | memcpy(data_array, data, nbEle*sizeof(float)); |
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432 | //for(i=0;i<nbEle;i++) |
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433 | // data_array[i] = data[i]; |
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434 | free(data); //this free operation seems to not work with BlueG/Q system. |
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435 | } |
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436 | else if (dataType == SZ_DOUBLE) |
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437 | { |
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438 | double* data = (double *)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
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439 | double* data_array = (double *)decompressed_array; |
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440 | memcpy(data_array, data, nbEle*sizeof(double)); |
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441 | //for(i=0;i<nbEle;i++) |
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442 | // data_array[i] = data[i]; |
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443 | free(data); //this free operation seems to not work with BlueG/Q system. |
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444 | } |
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445 | else if(dataType == SZ_INT8) |
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446 | { |
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447 | int8_t* data = (int8_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
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448 | int8_t* data_array = (int8_t *)decompressed_array; |
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449 | memcpy(data_array, data, nbEle*sizeof(int8_t)); |
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450 | free(data); |
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451 | } |
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452 | else if(dataType == SZ_INT16) |
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453 | { |
---|
454 | int16_t* data = (int16_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
---|
455 | int16_t* data_array = (int16_t *)decompressed_array; |
---|
456 | memcpy(data_array, data, nbEle*sizeof(int16_t)); |
---|
457 | free(data); |
---|
458 | } |
---|
459 | else if(dataType == SZ_INT32) |
---|
460 | { |
---|
461 | int32_t* data = (int32_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
---|
462 | int32_t* data_array = (int32_t *)decompressed_array; |
---|
463 | memcpy(data_array, data, nbEle*sizeof(int32_t)); |
---|
464 | free(data); |
---|
465 | } |
---|
466 | else if(dataType == SZ_INT64) |
---|
467 | { |
---|
468 | int64_t* data = (int64_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
---|
469 | int64_t* data_array = (int64_t *)decompressed_array; |
---|
470 | memcpy(data_array, data, nbEle*sizeof(int64_t)); |
---|
471 | free(data); |
---|
472 | } |
---|
473 | else if(dataType == SZ_UINT8) |
---|
474 | { |
---|
475 | uint8_t* data = (uint8_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
---|
476 | uint8_t* data_array = (uint8_t *)decompressed_array; |
---|
477 | memcpy(data_array, data, nbEle*sizeof(uint8_t)); |
---|
478 | free(data); |
---|
479 | } |
---|
480 | else if(dataType == SZ_UINT16) |
---|
481 | { |
---|
482 | uint16_t* data = (uint16_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
---|
483 | uint16_t* data_array = (uint16_t *)decompressed_array; |
---|
484 | memcpy(data_array, data, nbEle*sizeof(uint16_t)); |
---|
485 | free(data); |
---|
486 | } |
---|
487 | else if(dataType == SZ_UINT32) |
---|
488 | { |
---|
489 | uint32_t* data = (uint32_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
---|
490 | uint32_t* data_array = (uint32_t *)decompressed_array; |
---|
491 | memcpy(data_array, data, nbEle*sizeof(uint32_t)); |
---|
492 | free(data); |
---|
493 | } |
---|
494 | else if(dataType == SZ_UINT64) |
---|
495 | { |
---|
496 | uint64_t* data = (uint64_t*)SZ_decompress(dataType, bytes, byteLength, r5, r4, r3, r2, r1); |
---|
497 | uint64_t* data_array = (uint64_t *)decompressed_array; |
---|
498 | memcpy(data_array, data, nbEle*sizeof(uint64_t)); |
---|
499 | free(data); |
---|
500 | } |
---|
501 | else |
---|
502 | { |
---|
503 | printf("Error: data type cannot be the types other than SZ_FLOAT or SZ_DOUBLE\n"); |
---|
504 | return SZ_NSCS; //indicating error |
---|
505 | } |
---|
506 | |
---|
507 | return nbEle; |
---|
508 | } |
---|
509 | |
---|
510 | |
---|
511 | sz_metadata* SZ_getMetadata(unsigned char* bytes) |
---|
512 | { |
---|
513 | int index = 0, i, isConstant, isLossless; |
---|
514 | size_t dataSeriesLength = 0; |
---|
515 | int versions[3] = {0,0,0}; |
---|
516 | for (i = 0; i < 3; i++) |
---|
517 | versions[i] = bytes[index++]; //3 |
---|
518 | unsigned char sameRByte = bytes[index++]; //1 |
---|
519 | isConstant = sameRByte & 0x01; |
---|
520 | //confparams_dec->szMode = (sameRByte & 0x06)>>1; |
---|
521 | isLossless = (sameRByte & 0x10)>>4; |
---|
522 | |
---|
523 | int isRandomAccess = (sameRByte >> 7) & 0x01; |
---|
524 | |
---|
525 | if(exe_params==NULL) |
---|
526 | { |
---|
527 | exe_params = (sz_exedata *)malloc(sizeof(struct sz_exedata)); |
---|
528 | memset(exe_params, 0, sizeof(struct sz_exedata)); |
---|
529 | } |
---|
530 | exe_params->SZ_SIZE_TYPE = ((sameRByte & 0x40)>>6)==1?8:4; |
---|
531 | |
---|
532 | sz_params* params = convertBytesToSZParams(&(bytes[index])); |
---|
533 | if(confparams_dec!=NULL) |
---|
534 | free(confparams_dec); |
---|
535 | confparams_dec = params; |
---|
536 | index += MetaDataByteLength; |
---|
537 | |
---|
538 | if(params->dataType!=SZ_FLOAT && params->dataType!= SZ_DOUBLE) //if this type is an Int type |
---|
539 | index++; //jump to the dataLength info byte address |
---|
540 | dataSeriesLength = bytesToSize(&(bytes[index]));// 4 or 8 |
---|
541 | index += exe_params->SZ_SIZE_TYPE; |
---|
542 | //index += 4; //max_quant_intervals |
---|
543 | |
---|
544 | sz_metadata* metadata = (sz_metadata*)malloc(sizeof(struct sz_metadata)); |
---|
545 | |
---|
546 | metadata->versionNumber[0] = versions[0]; |
---|
547 | metadata->versionNumber[1] = versions[1]; |
---|
548 | metadata->versionNumber[2] = versions[2]; |
---|
549 | metadata->isConstant = isConstant; |
---|
550 | metadata->isLossless = isLossless; |
---|
551 | metadata->sizeType = exe_params->SZ_SIZE_TYPE; |
---|
552 | metadata->dataSeriesLength = dataSeriesLength; |
---|
553 | |
---|
554 | metadata->conf_params = confparams_dec; |
---|
555 | |
---|
556 | int defactoNBBins = 0; //real # bins |
---|
557 | if(isConstant==0 && isLossless==0) |
---|
558 | { |
---|
559 | if(isRandomAccess==1) |
---|
560 | { |
---|
561 | unsigned char* raBytes = &(bytes[index]); |
---|
562 | defactoNBBins = bytesToInt_bigEndian(raBytes + sizeof(int) + sizeof(double)); |
---|
563 | } |
---|
564 | else |
---|
565 | { |
---|
566 | int radExpoL = 0, segmentL = 0, pwrErrBoundBytesL = 0; |
---|
567 | if(metadata->conf_params->errorBoundMode >= PW_REL) |
---|
568 | { |
---|
569 | radExpoL = 1; |
---|
570 | segmentL = exe_params->SZ_SIZE_TYPE; |
---|
571 | pwrErrBoundBytesL = 4; |
---|
572 | } |
---|
573 | |
---|
574 | int offset_typearray = 3 + 1 + MetaDataByteLength + exe_params->SZ_SIZE_TYPE + 4 + radExpoL + segmentL + pwrErrBoundBytesL + 4 + (4 + params->dataType*4) + 1 + 8 |
---|
575 | + exe_params->SZ_SIZE_TYPE + exe_params->SZ_SIZE_TYPE + exe_params->SZ_SIZE_TYPE + 4; |
---|
576 | defactoNBBins = bytesToInt_bigEndian(bytes+offset_typearray); |
---|
577 | } |
---|
578 | |
---|
579 | } |
---|
580 | |
---|
581 | metadata->defactoNBBins = defactoNBBins; |
---|
582 | return metadata; |
---|
583 | } |
---|
584 | |
---|
585 | void SZ_printMetadata(sz_metadata* metadata) |
---|
586 | { |
---|
587 | printf("=================SZ Compression Meta Data=================\n"); |
---|
588 | printf("Version: \t %d.%d.%d\n", metadata->versionNumber[0], metadata->versionNumber[1], metadata->versionNumber[2]); |
---|
589 | printf("Constant data?: \t %s\n", metadata->isConstant==1?"YES":"NO"); |
---|
590 | printf("Lossless?: \t %s\n", metadata->isLossless==1?"YES":"NO"); |
---|
591 | printf("Size type (size of # elements): \t %d bytes\n", metadata->sizeType); |
---|
592 | printf("Num of elements: \t %zu\n", metadata->dataSeriesLength); |
---|
593 | |
---|
594 | sz_params* params = metadata->conf_params; |
---|
595 | |
---|
596 | switch(params->dataType) |
---|
597 | { |
---|
598 | case SZ_FLOAT: |
---|
599 | printf("Data type: \t FLOAT\n"); |
---|
600 | break; |
---|
601 | case SZ_DOUBLE: |
---|
602 | printf("Data type: \t DOUBLE\n"); |
---|
603 | break; |
---|
604 | case SZ_INT8: |
---|
605 | printf("Data type: \t INT8\n"); |
---|
606 | break; |
---|
607 | case SZ_INT16: |
---|
608 | printf("Data type: \t INT16\n"); |
---|
609 | break; |
---|
610 | case SZ_INT32: |
---|
611 | printf("Data type: \t INT32\n"); |
---|
612 | break; |
---|
613 | case SZ_INT64: |
---|
614 | printf("Data type: \t INT64\n"); |
---|
615 | break; |
---|
616 | case SZ_UINT8: |
---|
617 | printf("Data type: \t UINT8\n"); |
---|
618 | break; |
---|
619 | case SZ_UINT16: |
---|
620 | printf("Data type: \t UINT16\n"); |
---|
621 | break; |
---|
622 | case SZ_UINT32: |
---|
623 | printf("Data type: \t UINT32\n"); |
---|
624 | break; |
---|
625 | case SZ_UINT64: |
---|
626 | printf("Data type: \t UINT64\n"); |
---|
627 | break; |
---|
628 | } |
---|
629 | |
---|
630 | if(exe_params->optQuantMode==1) |
---|
631 | { |
---|
632 | printf("quantization_intervals: \t 0\n"); |
---|
633 | printf("max_quant_intervals: \t %d\n", params->max_quant_intervals); |
---|
634 | printf("actual used # intervals: \t %d\n", metadata->defactoNBBins); |
---|
635 | } |
---|
636 | else |
---|
637 | { |
---|
638 | printf("quantization_intervals: \t %d\n", params->quantization_intervals); |
---|
639 | printf("max_quant_intervals: \t - %d\n", params->max_quant_intervals); |
---|
640 | } |
---|
641 | |
---|
642 | printf("dataEndianType (prior raw data):\t %s\n", dataEndianType==BIG_ENDIAN_DATA?"BIG_ENDIAN":"LITTLE_ENDIAN"); |
---|
643 | printf("sysEndianType (at compression): \t %s\n", sysEndianType==1?"BIG_ENDIAN":"LITTLE_ENDIAN"); |
---|
644 | printf("sampleDistance: \t %d\n", params->sampleDistance); |
---|
645 | printf("predThreshold: \t %f\n", params->predThreshold); |
---|
646 | switch(params->szMode) |
---|
647 | { |
---|
648 | case SZ_BEST_SPEED: |
---|
649 | printf("szMode: \t SZ_BEST_SPEED (without Gzip)\n"); |
---|
650 | break; |
---|
651 | case SZ_BEST_COMPRESSION: |
---|
652 | printf("szMode: \t SZ_BEST_COMPRESSION (with Gzip)\n"); |
---|
653 | break; |
---|
654 | } |
---|
655 | switch(params->gzipMode) |
---|
656 | { |
---|
657 | case Z_BEST_SPEED: |
---|
658 | printf("gzipMode: \t Z_BEST_SPEED\n"); |
---|
659 | break; |
---|
660 | case Z_DEFAULT_COMPRESSION: |
---|
661 | printf("gzipMode: \t Z_BEST_SPEED\n"); |
---|
662 | break; |
---|
663 | case Z_BEST_COMPRESSION: |
---|
664 | printf("gzipMode: \t Z_BEST_COMPRESSION\n"); |
---|
665 | break; |
---|
666 | } |
---|
667 | |
---|
668 | switch(params->errorBoundMode) |
---|
669 | { |
---|
670 | case ABS: |
---|
671 | printf("errBoundMode: \t ABS\n"); |
---|
672 | printf("absErrBound: \t %f\n", params->absErrBound); |
---|
673 | break; |
---|
674 | case REL: |
---|
675 | printf("errBoundMode: \t REL (based on value_range extent)\n"); |
---|
676 | printf("relBoundRatio: \t %f\n", params->relBoundRatio); |
---|
677 | break; |
---|
678 | case ABS_AND_REL: |
---|
679 | printf("errBoundMode: \t ABS_AND_REL\n"); |
---|
680 | printf("absErrBound: \t %f\n", params->absErrBound); |
---|
681 | printf("relBoundRatio: \t %f\n", params->relBoundRatio); |
---|
682 | break; |
---|
683 | case ABS_OR_REL: |
---|
684 | printf("errBoundMode: \t ABS_OR_REL\n"); |
---|
685 | printf("absErrBound: \t %f\n", params->absErrBound); |
---|
686 | printf("relBoundRatio: \t %f\n", params->relBoundRatio); |
---|
687 | break; |
---|
688 | case PSNR: |
---|
689 | printf("errBoundMode: \t PSNR\n"); |
---|
690 | printf("psnr: \t %f\n", params->psnr); |
---|
691 | break; |
---|
692 | case PW_REL: |
---|
693 | printf("errBoundMode: \t PW_REL\n"); |
---|
694 | break; |
---|
695 | case ABS_AND_PW_REL: |
---|
696 | printf("errBoundMode: \t ABS_AND_PW_REL\n"); |
---|
697 | printf("absErrBound: \t %f\n", params->absErrBound); |
---|
698 | break; |
---|
699 | case ABS_OR_PW_REL: |
---|
700 | printf("errBoundMode: \t ABS_OR_PW_REL\n"); |
---|
701 | printf("absErrBound: \t %f\n", params->absErrBound); |
---|
702 | break; |
---|
703 | case REL_AND_PW_REL: |
---|
704 | printf("errBoundMode: \t REL_AND_PW_REL\n"); |
---|
705 | printf("range_relBoundRatio: \t %f\n", params->relBoundRatio); |
---|
706 | break; |
---|
707 | case REL_OR_PW_REL: |
---|
708 | printf("errBoundMode: \t REL_OR_PW_REL\n"); |
---|
709 | printf("range_relBoundRatio: \t %f\n", params->relBoundRatio); |
---|
710 | break; |
---|
711 | } |
---|
712 | |
---|
713 | if(params->errorBoundMode>=PW_REL && params->errorBoundMode<=REL_OR_PW_REL) |
---|
714 | { |
---|
715 | printf("pw_relBoundRatio: \t %f\n", params->pw_relBoundRatio); |
---|
716 | printf("segment_size: \t %d\n", params->segment_size); |
---|
717 | switch(params->pwr_type) |
---|
718 | { |
---|
719 | case SZ_PWR_MIN_TYPE: |
---|
720 | printf("pwrType: \t SZ_PWR_MIN_TYPE\n"); |
---|
721 | break; |
---|
722 | case SZ_PWR_AVG_TYPE: |
---|
723 | printf("pwrType: \t SZ_PWR_AVG_TYPE\n"); |
---|
724 | break; |
---|
725 | case SZ_PWR_MAX_TYPE: |
---|
726 | printf("pwrType: \t SZ_PWR_MAX_TYPE\n"); |
---|
727 | break; |
---|
728 | } |
---|
729 | } |
---|
730 | } |
---|
731 | |
---|
732 | /*-----------------------------------batch data compression--------------------------------------*/ |
---|
733 | |
---|
734 | void filloutDimArray(size_t* dim, size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
---|
735 | { |
---|
736 | if(r2==0) |
---|
737 | dim[0] = r1; |
---|
738 | else if(r3==0) |
---|
739 | { |
---|
740 | dim[0] = r2; |
---|
741 | dim[1] = r1; |
---|
742 | } |
---|
743 | else if(r4==0) |
---|
744 | { |
---|
745 | dim[0] = r3; |
---|
746 | dim[1] = r2; |
---|
747 | dim[2] = r1; |
---|
748 | } |
---|
749 | else if(r5==0) |
---|
750 | { |
---|
751 | dim[0] = r4; |
---|
752 | dim[1] = r3; |
---|
753 | dim[2] = r2; |
---|
754 | dim[3] = r1; |
---|
755 | } |
---|
756 | else |
---|
757 | { |
---|
758 | dim[0] = r5; |
---|
759 | dim[1] = r4; |
---|
760 | dim[2] = r3; |
---|
761 | dim[3] = r2; |
---|
762 | dim[4] = r1; |
---|
763 | } |
---|
764 | } |
---|
765 | |
---|
766 | size_t compute_total_batch_size() |
---|
767 | { |
---|
768 | size_t eleNum = 0, totalSize = 0; |
---|
769 | SZ_Variable* p = sz_varset->header; |
---|
770 | while(p->next!=NULL) |
---|
771 | { |
---|
772 | eleNum = computeDataLength(p->next->r5, p->next->r4, p->next->r3, p->next->r2, p->next->r1); |
---|
773 | if(p->next->dataType==SZ_FLOAT) |
---|
774 | totalSize += (eleNum*4); |
---|
775 | else |
---|
776 | totalSize += (eleNum*8); |
---|
777 | p=p->next; |
---|
778 | } |
---|
779 | return totalSize; |
---|
780 | } |
---|
781 | |
---|
782 | void SZ_registerVar(char* varName, int dataType, void* data, |
---|
783 | int errBoundMode, double absErrBound, double relBoundRatio, double pwRelBoundRatio, |
---|
784 | size_t r5, size_t r4, size_t r3, size_t r2, size_t r1) |
---|
785 | { |
---|
786 | if(sz_tsc==NULL) |
---|
787 | initSZ_TSC(); |
---|
788 | |
---|
789 | char str[256]; |
---|
790 | SZ_batchAddVar(varName, dataType, data, |
---|
791 | errBoundMode, absErrBound, relBoundRatio, pwRelBoundRatio, r5, r4, r3, r2, r1); |
---|
792 | sprintf(str, "%d: %s : %zuX%zuX%zuX%zu%zu : %d : %f : %f : %f\n", sz_varset->count - 1, varName, r5, r4, r3, r2, r1, errBoundMode, absErrBound, relBoundRatio, pwRelBoundRatio); |
---|
793 | fputs(str, sz_tsc->metadata_file); |
---|
794 | } |
---|
795 | |
---|
796 | int SZ_deregisterVar(char* varName) |
---|
797 | { |
---|
798 | int state = SZ_batchDelVar(varName); |
---|
799 | return state; |
---|
800 | } |
---|
801 | |
---|
802 | #ifdef HAVE_TIMECMPR |
---|
803 | int SZ_compress_ts(unsigned char** newByteData, size_t *outSize) |
---|
804 | { |
---|
805 | confparams_cpr->szMode = SZ_TEMPORAL_COMPRESSION; |
---|
806 | confparams_cpr->predictionMode = SZ_PREVIOUS_VALUE_ESTIMATE; |
---|
807 | |
---|
808 | SZ_VarSet* vset = sz_varset; |
---|
809 | size_t *outSize_ = (size_t*)malloc(sizeof(size_t)*vset->count); |
---|
810 | memset(outSize_, 0, sizeof(size_t)*vset->count); |
---|
811 | unsigned char** compressBuffer = (unsigned char**)malloc(vset->count*sizeof(unsigned char*));//to store compressed bytes |
---|
812 | |
---|
813 | char *metadata_str = (char*)malloc(vset->count*256); |
---|
814 | memset(metadata_str, 0, vset->count*256); |
---|
815 | sprintf(metadata_str, "step %d", sz_tsc->currentStep); |
---|
816 | |
---|
817 | int i = 0, totalSize = 0; |
---|
818 | for(i=0;i<vset->count;i++) |
---|
819 | { |
---|
820 | SZ_Variable* v = vset->header->next; |
---|
821 | multisteps = v->multisteps; //assign the v's multisteps to the global variable 'multisteps', which will be used in the following compression. |
---|
822 | |
---|
823 | if(v->dataType==SZ_FLOAT) |
---|
824 | { |
---|
825 | SZ_compress_args_float(&(compressBuffer[i]), (float*)v->data, v->r5, v->r4, v->r3, v->r2, v->r1, &outSize_[i], v->errBoundMode, v->absErrBound, v->relBoundRatio, v->pwRelBoundRatio); |
---|
826 | } |
---|
827 | else if(v->dataType==SZ_DOUBLE) |
---|
828 | { |
---|
829 | SZ_compress_args_double(&(compressBuffer[i]), (double*)v->data, v->r5, v->r4, v->r3, v->r2, v->r1, &outSize_[i], v->errBoundMode, v->absErrBound, v->relBoundRatio, v->pwRelBoundRatio); |
---|
830 | } |
---|
831 | sprintf(metadata_str, "%s:%d,%d,%zu", metadata_str, i, multisteps->lastSnapshotStep, outSize_[i]); |
---|
832 | |
---|
833 | totalSize += outSize_[i]; |
---|
834 | v->compressType = multisteps->compressionType; |
---|
835 | v = v->next; |
---|
836 | } |
---|
837 | |
---|
838 | sprintf(metadata_str, "%s\n", metadata_str); |
---|
839 | fputs(metadata_str, sz_tsc->metadata_file); |
---|
840 | free(metadata_str); |
---|
841 | |
---|
842 | //sizeof(int)==current time step; 2*sizeof(char)+sizeof(size_t)=={compressionType + datatype + compression_data_size}; |
---|
843 | //sizeof(char)==# variables |
---|
844 | *outSize = sizeof(int) + sizeof(unsigned short) + totalSize + vset->count*(2*sizeof(unsigned char)+sizeof(size_t)); |
---|
845 | *newByteData = (unsigned char*)malloc(*outSize); |
---|
846 | unsigned char* p = *newByteData; |
---|
847 | |
---|
848 | intToBytes_bigEndian(p, sz_tsc->currentStep); |
---|
849 | p+=4; |
---|
850 | shortToBytes(p, vset->count); |
---|
851 | p+=2; |
---|
852 | |
---|
853 | for(i=0;i<vset->count;i++) |
---|
854 | { |
---|
855 | SZ_Variable* v = vset->header->next; |
---|
856 | |
---|
857 | *p = (unsigned char)v->compressType; //1 byte |
---|
858 | p++; |
---|
859 | *p = (unsigned char)v->dataType; //1 byte |
---|
860 | p++; |
---|
861 | sizeToBytes(p, outSize_[i]); //size_t |
---|
862 | p += sizeof(size_t); |
---|
863 | //sizeToBytes(p, v->r5); //size_t |
---|
864 | //p += sizeof(size_t); |
---|
865 | //sizeToBytes(p, v->r4); //size_t |
---|
866 | //p += sizeof(size_t); |
---|
867 | //sizeToBytes(p, v->r3); //size_t |
---|
868 | //p += sizeof(size_t); |
---|
869 | //sizeToBytes(p, v->r2); //size_t |
---|
870 | //p += sizeof(size_t); |
---|
871 | //sizeToBytes(p, v->r1); //size_t |
---|
872 | //p += sizeof(size_t); |
---|
873 | memcpy(p, compressBuffer[i], outSize_[i]); //outSize_[i] |
---|
874 | p += outSize_[i]; |
---|
875 | } |
---|
876 | |
---|
877 | sz_tsc->currentStep ++; |
---|
878 | free(outSize_); |
---|
879 | |
---|
880 | return SZ_SCES; |
---|
881 | } |
---|
882 | |
---|
883 | void SZ_decompress_ts(unsigned char *bytes, size_t byteLength) |
---|
884 | { |
---|
885 | if(confparams_dec==NULL) |
---|
886 | confparams_dec = (sz_params*)malloc(sizeof(sz_params)); |
---|
887 | memset(confparams_dec, 0, sizeof(sz_params)); |
---|
888 | confparams_dec->szMode = SZ_TEMPORAL_COMPRESSION; |
---|
889 | confparams_dec->predictionMode = SZ_PREVIOUS_VALUE_ESTIMATE; |
---|
890 | |
---|
891 | if(exe_params==NULL) |
---|
892 | exe_params = (sz_exedata*)malloc(sizeof(sz_exedata)); |
---|
893 | memset(exe_params, 0, sizeof(sz_exedata)); |
---|
894 | |
---|
895 | int x = 1; |
---|
896 | char *y = (char*)&x; |
---|
897 | if(*y==1) |
---|
898 | sysEndianType = LITTLE_ENDIAN_SYSTEM; |
---|
899 | else //=0 |
---|
900 | sysEndianType = BIG_ENDIAN_SYSTEM; |
---|
901 | |
---|
902 | int i = 0; |
---|
903 | size_t r5 = 0, r4 = 0, r3 = 0, r2 = 0, r1 = 0; |
---|
904 | unsigned char* q = bytes; |
---|
905 | sz_tsc->currentStep = bytesToInt_bigEndian(q); |
---|
906 | q += 4; |
---|
907 | unsigned short nbVars = (unsigned short)bytesToShort(q); |
---|
908 | q += 2; |
---|
909 | |
---|
910 | if(nbVars != sz_varset->count) |
---|
911 | { |
---|
912 | printf("Error: the number of variables in the compressed data file is inconsistent with the registered # variables.\n"); |
---|
913 | printf("Specifically, nbVars = %d, sz_varset->count = %d\n", nbVars, sz_varset->count); |
---|
914 | return; |
---|
915 | } |
---|
916 | |
---|
917 | float *newFloatData = NULL; |
---|
918 | double *newDoubleData = NULL; |
---|
919 | |
---|
920 | SZ_Variable* p = sz_varset->header->next; // p is pointed to the first variable. |
---|
921 | for(i=0;i<sz_varset->count;i++) |
---|
922 | { |
---|
923 | multisteps = p->multisteps; |
---|
924 | r5 = p->r5; |
---|
925 | r4 = p->r4; |
---|
926 | r3 = p->r3; |
---|
927 | r2 = p->r2; |
---|
928 | r1 = p->r1; |
---|
929 | size_t dataLen = computeDataLength(r5, r4, r3, r2, r1); |
---|
930 | multisteps->compressionType = *(q++); |
---|
931 | unsigned char dataType = *(q++); |
---|
932 | size_t cmpSize = bytesToSize(q); |
---|
933 | q += sizeof(size_t); |
---|
934 | unsigned char* cmpBytes = q; |
---|
935 | switch(dataType) |
---|
936 | { |
---|
937 | case SZ_FLOAT: |
---|
938 | SZ_decompress_args_float(&newFloatData, r5, r4, r3, r2, r1, cmpBytes, cmpSize); |
---|
939 | memcpy(p->data, newFloatData, dataLen*sizeof(float)); |
---|
940 | free(newFloatData); |
---|
941 | break; |
---|
942 | case SZ_DOUBLE: |
---|
943 | SZ_decompress_args_double(&newDoubleData, r5, r4, r3, r2, r1, cmpBytes, cmpSize); |
---|
944 | memcpy(p->data, newDoubleData, dataLen*sizeof(double)); |
---|
945 | free(newDoubleData); |
---|
946 | break; |
---|
947 | default: |
---|
948 | printf("Error: data type cannot be the types other than SZ_FLOAT or SZ_DOUBLE\n"); |
---|
949 | return; |
---|
950 | } |
---|
951 | |
---|
952 | q += cmpSize; |
---|
953 | p = p->next; |
---|
954 | } |
---|
955 | } |
---|
956 | #endif |
---|
957 | |
---|
958 | |
---|
959 | void SZ_Finalize() |
---|
960 | { |
---|
961 | #ifdef HAVE_TIMECMPR |
---|
962 | if(sz_varset!=NULL) |
---|
963 | SZ_freeVarSet(SZ_MAINTAIN_VAR_DATA); |
---|
964 | #endif |
---|
965 | |
---|
966 | if(confparams_dec!=NULL) |
---|
967 | { |
---|
968 | free(confparams_dec); |
---|
969 | confparams_dec = NULL; |
---|
970 | } |
---|
971 | if(confparams_cpr!=NULL) |
---|
972 | { |
---|
973 | free(confparams_cpr); |
---|
974 | confparams_cpr = NULL; |
---|
975 | } |
---|
976 | if(exe_params!=NULL) |
---|
977 | { |
---|
978 | free(exe_params); |
---|
979 | exe_params = NULL; |
---|
980 | } |
---|
981 | |
---|
982 | #ifdef HAVE_TIMECMPR |
---|
983 | if(sz_tsc!=NULL && sz_tsc->metadata_file!=NULL) |
---|
984 | fclose(sz_tsc->metadata_file); |
---|
985 | #endif |
---|
986 | } |
---|