[2c47b73] | 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 | |
---|
| 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 | |
---|
| 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; |
---|
| 505 | } |
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