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5496 | leency | 1 | /* |
2 | jbig2dec |
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3 | |||
4 | Copyright (C) 2002-2004 Artifex Software, Inc. |
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5 | |||
6 | This software is distributed under license and may not |
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7 | be copied, modified or distributed except as expressly |
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8 | authorized under the terms of the license contained in |
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9 | the file LICENSE in this distribution. |
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10 | |||
11 | For further licensing information refer to http://artifex.com/ or |
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12 | contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, |
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13 | San Rafael, CA 94903, U.S.A., +1(415)492-9861. |
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14 | */ |
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15 | |||
16 | /** |
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17 | * Headers for Text region handling |
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18 | **/ |
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19 | |||
20 | typedef enum { |
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21 | JBIG2_CORNER_BOTTOMLEFT = 0, |
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22 | JBIG2_CORNER_TOPLEFT = 1, |
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23 | JBIG2_CORNER_BOTTOMRIGHT = 2, |
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24 | JBIG2_CORNER_TOPRIGHT = 3 |
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25 | } Jbig2RefCorner; |
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26 | |||
27 | typedef struct { |
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28 | bool SBHUFF; |
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29 | bool SBREFINE; |
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30 | bool SBDEFPIXEL; |
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31 | Jbig2ComposeOp SBCOMBOP; |
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32 | bool TRANSPOSED; |
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33 | Jbig2RefCorner REFCORNER; |
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34 | int SBDSOFFSET; |
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35 | /* int SBW; */ |
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36 | /* int SBH; */ |
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37 | uint32_t SBNUMINSTANCES; |
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38 | int LOGSBSTRIPS; |
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39 | int SBSTRIPS; |
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40 | /* int SBNUMSYMS; */ |
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41 | /* SBSYMCODES */ |
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42 | /* SBSYMCODELEN */ |
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43 | /* SBSYMS */ |
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44 | Jbig2HuffmanTable *SBHUFFFS; |
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45 | Jbig2HuffmanTable *SBHUFFDS; |
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46 | Jbig2HuffmanTable *SBHUFFDT; |
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47 | Jbig2HuffmanTable *SBHUFFRDW; |
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48 | Jbig2HuffmanTable *SBHUFFRDH; |
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49 | Jbig2HuffmanTable *SBHUFFRDX; |
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50 | Jbig2HuffmanTable *SBHUFFRDY; |
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51 | Jbig2HuffmanTable *SBHUFFRSIZE; |
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52 | Jbig2ArithIntCtx *IADT; |
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53 | Jbig2ArithIntCtx *IAFS; |
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54 | Jbig2ArithIntCtx *IADS; |
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55 | Jbig2ArithIntCtx *IAIT; |
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56 | Jbig2ArithIaidCtx *IAID; |
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57 | Jbig2ArithIntCtx *IARI; |
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58 | Jbig2ArithIntCtx *IARDW; |
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59 | Jbig2ArithIntCtx *IARDH; |
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60 | Jbig2ArithIntCtx *IARDX; |
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61 | Jbig2ArithIntCtx *IARDY; |
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62 | bool SBRTEMPLATE; |
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63 | int8_t sbrat[4]; |
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64 | } Jbig2TextRegionParams; |
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65 | |||
66 | int |
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67 | jbig2_decode_text_region(Jbig2Ctx *ctx, Jbig2Segment *segment, |
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68 | const Jbig2TextRegionParams *params, |
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69 | const Jbig2SymbolDict * const *dicts, const int n_dicts, |
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70 | Jbig2Image *image, |
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71 | const byte *data, const size_t size, |
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72 | Jbig2ArithCx *GR_stats, |
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73 | Jbig2ArithState *as, Jbig2WordStream *ws); |