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annotate src/dmzlib.h @ 1062:d36bf7514614

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Add some constants and make initialization one-time only.
author Matti Hamalainen <ccr@tnsp.org>
date Mon, 02 Mar 2015 00:03:13 +0200
parents 43905dacb365
children b20922f4746f
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1 /*
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2 * DMLib
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3 * -- ZLib implementation
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4 * Public domain zlib decode v0.2 by Sean Barrett 2006-11-18
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5 * Modified and reformatted for DMLib by Matti 'ccr' Hamalainen
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6 */
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7 #ifndef DMZLIB_H
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8 #define DMZLIB_H
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9
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10 #include "dmlib.h"
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11
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12 #ifdef __cplusplus
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13 extern "C" {
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14 #endif
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15
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16
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17 #define DM_ZLIB_HFAST_BITS 9 // accelerate all cases in default tables
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18 #define DM_ZLIB_HFAST_SIZE (1 << DM_ZLIB_HFAST_BITS)
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19 #define DM_ZLIB_HFAST_MASK (DM_ZLIB_HFAST_SIZE - 1)
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20
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21 #define DM_ZLIB_HUFF_CODES (288)
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22 #define DM_ZLIB_HUFF_DIST (32)
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23
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24 typedef struct
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25 {
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26 BOOL initialized;
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27
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28 Uint16 fast[DM_ZLIB_HFAST_SIZE];
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29 Uint16 firstCode[16];
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30 int maxCode[16 + 1];
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31 Uint16 firstSymbol[16];
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32
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33 Uint8 size[DM_ZLIB_HUFF_CODES];
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34 Uint16 value[DM_ZLIB_HUFF_CODES];
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35 } DMZHuffmanContext;
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36
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37
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38 typedef struct
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39 {
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40 Uint8 *zbuffer, *zbufferEnd;
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41
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42 int window;
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43 int numBits;
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44 Uint32 codeBuffer;
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45
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46 Uint8 *zout, *zoutStart, *zoutEnd;
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47 BOOL expandable;
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48
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49 DMZHuffmanContext zlength, zdistance;
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50 } DMZLibContext;
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51
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52
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53 int dmZLibInit();
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54 void dmZLibClose();
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55 int dmZLibParseHeader(DMZLibContext * ctx, BOOL checkPNG);
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56 int dmZLibDecode(DMZLibContext * ctx);
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58
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59 #ifdef __cplusplus
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60 }
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61 #endif
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62
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63 #endif // DMZLIB_H