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1 /* ************************************************************************** */ |
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2 /* * For conditions of distribution and use, * */ |
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3 /* * see copyright notice in libmng.h * */ |
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4 /* ************************************************************************** */ |
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5 /* * * */ |
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6 /* * project : libmng * */ |
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7 /* * file : libmng_data.h copyright (c) 2000-2007 G.Juyn * */ |
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8 /* * version : 1.0.10 * */ |
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9 /* * * */ |
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10 /* * purpose : main data structure definition * */ |
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11 /* * * */ |
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12 /* * author : G.Juyn * */ |
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13 /* * * */ |
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14 /* * comment : Definition of the library main data structure * */ |
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15 /* * * */ |
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16 /* * changes : 0.5.1 - 05/04/2000 - G.Juyn * */ |
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17 /* * - added CRC table to main structure (for thread-safety) * */ |
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18 /* * 0.5.1 - 05/06/2000 - G.Juyn * */ |
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19 /* * - added iPLTEentries for checking hIST-length * */ |
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20 /* * 0.5.1 - 05/08/2000 - G.Juyn * */ |
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21 /* * - changed palette definition to exported palette-type * */ |
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22 /* * - removed frozen indicator * */ |
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23 /* * - added create/write indicators * */ |
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24 /* * - changed strict-ANSI stuff * */ |
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25 /* * 0.5.1 - 05/13/2000 - G.Juyn * */ |
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26 /* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */ |
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27 /* * - added TERM animation object pointer (easier reference) * */ |
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28 /* * - added saved-data structure for SAVE/SEEK processing * */ |
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29 /* * * */ |
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30 /* * 0.5.2 - 05/18/2000 - G.Juyn * */ |
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31 /* * - added fields for JNG support (IJG-based) * */ |
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32 /* * 0.5.2 - 05/24/2000 - G.Juyn * */ |
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33 /* * - changed global tRNS definition * */ |
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34 /* * 0.5.2 - 05/30/2000 - G.Juyn * */ |
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35 /* * - added delta-image fields * */ |
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36 /* * 0.5.2 - 06/01/2000 - G.Juyn * */ |
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37 /* * - added internal delta-image processing callbacks * */ |
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38 /* * 0.5.2 - 06/02/2000 - G.Juyn * */ |
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39 /* * - changed SWAP_ENDIAN to BIGENDIAN_SUPPORTED * */ |
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40 /* * (contributed by Tim Rowley) * */ |
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41 /* * - added getalphaline callback for RGB8_A8 canvasstyle * */ |
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42 /* * 0.5.2 - 06/06/2000 - G.Juyn * */ |
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43 /* * - added parameter for delayed buffer-processing * */ |
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44 /* * * */ |
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45 /* * 0.5.3 - 06/16/2000 - G.Juyn * */ |
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46 /* * - added update-region parms for refresh calback * */ |
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47 /* * - added Needrefresh parameter * */ |
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48 /* * 0.5.3 - 06/17/2000 - G.Juyn * */ |
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49 /* * - added Deltaimmediate parm for faster delta-processing * */ |
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50 /* * 0.5.3 - 06/21/2000 - G.Juyn * */ |
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51 /* * - added Speed parameter to facilitate testing * */ |
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52 /* * - added Imagelevel parameter for processtext callback * */ |
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53 /* * 0.5.3 - 06/26/2000 - G.Juyn * */ |
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54 /* * - changed userdata variable to mng_ptr * */ |
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55 /* * * */ |
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56 /* * 0.9.1 - 07/07/2000 - G.Juyn * */ |
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57 /* * - added variables for go_xxxx processing * */ |
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58 /* * 0.9.1 - 07/08/2000 - G.Juyn * */ |
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59 /* * - added variables for improved timing support * */ |
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60 /* * 0.9.1 - 07/15/2000 - G.Juyn * */ |
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61 /* * - added callbacks for SAVE/SEEK processing * */ |
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62 /* * - added variable for NEEDSECTIONWAIT breaks * */ |
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63 /* * - added variable for freeze & reset processing * */ |
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64 /* * 0.9.1 - 07/17/2000 - G.Juyn * */ |
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65 /* * - fixed suspension-buffering for 32K+ chunks * */ |
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66 /* * * */ |
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67 /* * 0.9.2 - 07/29/2000 - G.Juyn * */ |
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68 /* * - removed Nextbackxxx fields (no longer used) * */ |
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69 /* * 0.9.2 - 07/31/2000 - G.Juyn * */ |
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70 /* * - fixed wrapping of suspension parameters * */ |
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71 /* * 0.9.2 - 08/04/2000 - G.Juyn * */ |
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72 /* * - B111096 - fixed large-buffer read-suspension * */ |
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73 /* * 0.9.2 - 08/05/2000 - G.Juyn * */ |
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74 /* * - changed file-prefixes * */ |
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75 /* * * */ |
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76 /* * 0.9.3 - 08/26/2000 - G.Juyn * */ |
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77 /* * - added MAGN chunk * */ |
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78 /* * 0.9.3 - 09/07/2000 - G.Juyn * */ |
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79 /* * - added support for new filter_types * */ |
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80 /* * 0.9.3 - 09/10/2000 - G.Juyn * */ |
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81 /* * - fixed DEFI behavior * */ |
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82 /* * 0.9.3 - 10/10/2000 - G.Juyn * */ |
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83 /* * - added support for alpha-depth prediction * */ |
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84 /* * 0.9.3 - 10/11/2000 - G.Juyn * */ |
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85 /* * - added support for nEED * */ |
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86 /* * 0.9.3 - 10/16/2000 - G.Juyn * */ |
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87 /* * - added optional support for bKGD for PNG images * */ |
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88 /* * - added support for JDAA * */ |
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89 /* * 0.9.3 - 10/17/2000 - G.Juyn * */ |
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90 /* * - added callback to process non-critical unknown chunks * */ |
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91 /* * - fixed support for bKGD * */ |
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92 /* * 0.9.3 - 10/19/2000 - G.Juyn * */ |
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93 /* * - implemented delayed delta-processing * */ |
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94 /* * 0.9.4 - 12/16/2000 - G.Juyn * */ |
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95 /* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */ |
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96 /* * * */ |
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97 /* * 1.0.1 - 02/08/2001 - G.Juyn * */ |
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98 /* * - added MEND processing callback * */ |
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99 /* * 1.0.1 - 02/13/2001 - G.Juyn * */ |
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100 /* * - fixed first FRAM_MODE=4 timing problem * */ |
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101 /* * * */ |
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102 /* * 1.0.2 - 06/23/2001 - G.Juyn * */ |
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103 /* * - added optimization option for MNG-video playback * */ |
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104 /* * - added processterm callback * */ |
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105 /* * 1.0.2 - 06/25/2001 - G.Juyn * */ |
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106 /* * - added option to turn off progressive refresh * */ |
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107 /* * * */ |
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108 /* * 1.0.5 - 07/08/2002 - G.Juyn * */ |
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109 /* * - B578572 - removed eMNGma hack (thanks Dimitri!) * */ |
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110 /* * 1.0.5 - 07/16/2002 - G.Juyn * */ |
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111 /* * - B581625 - large chunks fail with suspension reads * */ |
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112 /* * 1.0.5 - 08/15/2002 - G.Juyn * */ |
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113 /* * - completed PROM support * */ |
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114 /* * 1.0.5 - 09/15/2002 - G.Juyn * */ |
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115 /* * - fixed LOOP iteration=0 special case * */ |
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116 /* * 1.0.5 - 09/20/2002 - G.Juyn * */ |
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117 /* * - finished support for BACK image & tiling * */ |
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118 /* * 1.0.5 - 10/07/2002 - G.Juyn * */ |
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119 /* * - added another fix for misplaced TERM chunk * */ |
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120 /* * - completed support for condition=2 in TERM chunk * */ |
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121 /* * 1.0.5 - 10/20/2002 - G.Juyn * */ |
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122 /* * - fixed processing for multiple objects in MAGN * */ |
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123 /* * - fixed display of visible target of PAST operation * */ |
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124 /* * 1.0.5 - 11/07/2002 - G.Juyn * */ |
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125 /* * - added support to get totals after mng_read() * */ |
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126 /* * 1.0.5 - 24/02/2003 - G.Juyn * */ |
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127 /* * - B683152 - libjpeg suspension not always honored correctly* */ |
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128 /* * * */ |
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129 /* * 1.0.6 - 04/11/2003 - G.Juyn * */ |
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130 /* * - B719420 - fixed several MNG_APP_CMS problems * */ |
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131 /* * 1.0.6 - 07/05/2003 - G. R-P * */ |
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132 /* * - optionally use zlib's crc32() function * */ |
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133 /* * 1.0.6 - 07/29/2003 - G.R-P * */ |
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134 /* * - added SKIPCHUNK conditionals around PAST chunk support * */ |
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135 /* * 1.0.6 - 08/17/2003 - G.R-P * */ |
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136 /* * - added iPNGdepth member to pData structure * */ |
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137 /* * * */ |
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138 /* * 1.0.7 - 03/10/2004 - G.R-P * */ |
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139 /* * - added conditionals around openstream/closestream * */ |
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140 /* * 1.0.7 - 03/24/2004 - G.R-P * */ |
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141 /* * - added more SKIPCHUNK conditionals * */ |
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142 /* * * */ |
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143 /* * 1.0.8 - 04/02/2004 - G.Juyn * */ |
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144 /* * - added CRC existence & checking flags * */ |
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145 /* * 1.0.8 - 04/10/2004 - G.Juyn * */ |
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146 /* * - added data-push mechanisms for specialized decoders * */ |
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147 /* * * */ |
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148 /* * 1.0.9 - 12/11/2004 - G.Juyn * */ |
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149 /* * - added conditional MNG_OPTIMIZE_DISPLAYCALLS * */ |
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150 /* * * */ |
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151 /* * 1.0.10 - 04/08/2007 - G.Juyn * */ |
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152 /* * - added support for mPNG proposal * */ |
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153 /* * 1.0.10 - 04/12/2007 - G.Juyn * */ |
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154 /* * - added support for ANG proposal * */ |
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155 /* * * */ |
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156 /* ************************************************************************** */ |
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157 |
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158 #if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) |
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159 #pragma option -A /* force ANSI-C */ |
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160 #endif |
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161 |
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162 #ifndef _libmng_data_h_ |
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163 #define _libmng_data_h_ |
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164 |
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165 /* ************************************************************************** */ |
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166 |
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167 #define MNG_MAGIC 0x52530a0aL |
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168 |
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169 /* ************************************************************************** */ |
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170 /* * * */ |
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171 /* * Internal structures * */ |
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172 /* * * */ |
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173 /* ************************************************************************** */ |
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174 |
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175 typedef mng_palette8 mng_rgbpaltab; |
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176 |
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177 /* ************************************************************************** */ |
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178 /* * * */ |
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179 /* * The saved_data structure * */ |
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180 /* * * */ |
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181 /* * This contains the saved data after a SAVE chunk has been processed. * */ |
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182 /* * The data is saved from the main data structure during SAVE processing, * */ |
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183 /* * and restored to the main data structure during SEEK processing. * */ |
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184 /* * * */ |
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185 /* ************************************************************************** */ |
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186 |
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187 typedef struct mng_savedata_struct { |
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188 |
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189 #if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) |
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190 mng_bool bHasglobalPLTE; /* global PLTE chunk processed */ |
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191 mng_bool bHasglobalTRNS; /* global tRNS chunk processed */ |
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192 mng_bool bHasglobalGAMA; /* global gAMA chunk processed */ |
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193 mng_bool bHasglobalCHRM; /* global cHRM chunk processed */ |
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194 mng_bool bHasglobalSRGB; /* global sRGB chunk processed */ |
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195 mng_bool bHasglobalICCP; /* global iCCP chunk processed */ |
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196 mng_bool bHasglobalBKGD; /* global bKGD chunk processed */ |
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197 #endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */ |
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198 |
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199 #ifdef MNG_SUPPORT_DISPLAY |
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200 mng_uint16 iBACKred; /* BACK fields */ |
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201 mng_uint16 iBACKgreen; |
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202 mng_uint16 iBACKblue; |
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203 mng_uint8 iBACKmandatory; |
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204 mng_uint16 iBACKimageid; |
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205 mng_uint8 iBACKtile; |
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206 |
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207 mng_uint8 iFRAMmode; /* FRAM fields (global) */ |
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208 mng_uint32 iFRAMdelay; |
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209 mng_uint32 iFRAMtimeout; |
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210 mng_bool bFRAMclipping; |
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211 mng_int32 iFRAMclipl; |
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212 mng_int32 iFRAMclipr; |
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213 mng_int32 iFRAMclipt; |
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214 mng_int32 iFRAMclipb; |
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215 |
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216 mng_uint32 iGlobalPLTEcount; /* global PLTE fields */ |
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217 mng_rgbpaltab aGlobalPLTEentries; |
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218 |
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219 mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */ |
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220 mng_uint8arr aGlobalTRNSrawdata; |
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221 |
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222 mng_uint32 iGlobalGamma; /* global gAMA fields */ |
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223 |
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224 #ifndef MNG_SKIPCHUNK_cHRM |
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225 mng_uint32 iGlobalWhitepointx; /* global cHRM fields */ |
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226 mng_uint32 iGlobalWhitepointy; |
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227 mng_uint32 iGlobalPrimaryredx; |
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228 mng_uint32 iGlobalPrimaryredy; |
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229 mng_uint32 iGlobalPrimarygreenx; |
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230 mng_uint32 iGlobalPrimarygreeny; |
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231 mng_uint32 iGlobalPrimarybluex; |
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232 mng_uint32 iGlobalPrimarybluey; |
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233 #endif |
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234 |
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235 mng_uint8 iGlobalRendintent; /* global sRGB fields */ |
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236 |
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237 mng_uint32 iGlobalProfilesize; /* global iCCP fields */ |
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238 mng_ptr pGlobalProfile; |
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239 |
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240 mng_uint16 iGlobalBKGDred; /* global bKGD fields */ |
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241 mng_uint16 iGlobalBKGDgreen; |
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242 mng_uint16 iGlobalBKGDblue; |
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243 #endif /* MNG_SUPPORT_DISPLAY */ |
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244 |
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245 } mng_savedata; |
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246 |
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247 typedef mng_savedata * mng_savedatap; |
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248 |
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249 /* ************************************************************************** */ |
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250 /* * * */ |
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251 /* * Internal buffer structure for data push mechanisms * */ |
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252 /* * * */ |
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253 /* ************************************************************************** */ |
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254 |
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255 typedef struct { |
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256 mng_ptr pNext; /* for linked list */ |
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257 mng_ptr pData; /* used for chunks & data */ |
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258 mng_uint32 iLength; |
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259 mng_bool bOwned; |
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260 mng_uint8p pDatanext; /* only used for data */ |
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261 mng_uint32 iRemaining; |
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262 } mng_pushdata; |
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263 typedef mng_pushdata * mng_pushdatap; |
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264 |
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265 /* ************************************************************************** */ |
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266 /* * * */ |
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267 /* * The main libmng data structure * */ |
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268 /* * * */ |
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269 /* * The handle used in all functions points to this structure which * */ |
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270 /* * contains all volatile data necessary to process the network graphic. * */ |
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271 /* * * */ |
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272 /* ************************************************************************** */ |
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273 |
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274 typedef struct mng_data_struct { |
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275 |
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276 mng_uint32 iMagic; /* magic number to validate |
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277 a given handle */ |
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278 mng_ptr pUserdata; /* application workdata */ |
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279 |
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280 mng_imgtype eSigtype; /* image information */ |
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281 mng_imgtype eImagetype; /* initially zeroed */ |
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282 mng_uint32 iWidth; /* filled after header is processed */ |
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283 mng_uint32 iHeight; |
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284 mng_uint32 iTicks; /* these only after MHDR */ |
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285 mng_uint32 iLayercount; |
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286 mng_uint32 iFramecount; |
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287 mng_uint32 iPlaytime; |
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288 mng_uint32 iSimplicity; |
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289 mng_uint8 iAlphadepth; /* indicates expected alpha-depth */ |
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290 |
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291 mng_uint32 iImagelevel; /* level of image inside a stream */ |
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292 |
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293 mng_uint32 iCanvasstyle; /* layout of the drawing-canvas */ |
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294 mng_uint32 iBkgdstyle; /* layout of the background-canvas */ |
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295 |
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296 mng_int8 iMagnify; /* magnification factor (not used yet) */ |
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297 mng_uint32 iOffsetx; /* x-offset for extremely large image */ |
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298 mng_uint32 iOffsety; /* y-offset for extremely large image */ |
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299 mng_uint32 iCanvaswidth; /* real canvas size */ |
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300 mng_uint32 iCanvasheight; /* must be set by processheader callback */ |
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301 |
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302 mng_uint16 iBGred; /* default background color */ |
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303 mng_uint16 iBGgreen; /* initially "black" */ |
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304 mng_uint16 iBGblue; |
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305 mng_bool bUseBKGD; /* preferred use of bKGD for PNG */ |
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306 |
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307 mng_bool bIssRGB; /* indicates sRGB system */ |
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308 |
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309 #ifdef MNG_FULL_CMS /* little CMS variables */ |
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310 mng_cmsprof hProf1; /* image input profile */ |
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311 mng_cmsprof hProf2; /* default output profile */ |
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312 mng_cmsprof hProf3; /* default sRGB profile */ |
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313 mng_cmstrans hTrans; /* current transformation handle */ |
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314 #endif |
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315 |
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316 mng_float dViewgamma; /* gamma calculation variables */ |
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317 mng_float dDisplaygamma; /* initially set for sRGB conditions */ |
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318 mng_float dDfltimggamma; |
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319 |
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320 mng_bool bStorechunks; /* switch for storing chunkdata */ |
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321 mng_bool bSectionbreaks; /* indicate NEEDSECTIONWAIT breaks */ |
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322 mng_bool bCacheplayback; /* switch to cache playback info */ |
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323 mng_bool bDoProgressive; /* progressive refresh for large images */ |
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324 mng_uint32 iCrcmode; /* CRC existence & checking flags */ |
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325 |
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326 mng_speedtype iSpeed; /* speed-modifier for animations */ |
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327 |
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328 mng_uint32 iMaxwidth; /* maximum canvas size */ |
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329 mng_uint32 iMaxheight; /* initially set to 1024 x 1024 */ |
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330 |
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331 mng_int32 iErrorcode; /* error reporting fields */ |
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332 mng_int8 iSeverity; |
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333 mng_int32 iErrorx1; |
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334 mng_int32 iErrorx2; |
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335 mng_pchar zErrortext; |
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336 |
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337 mng_memalloc fMemalloc; /* callback pointers */ |
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338 mng_memfree fMemfree; /* initially nulled */ |
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339 mng_releasedata fReleasedata; |
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340 #ifndef MNG_NO_OPEN_CLOSE_STREAM |
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341 mng_openstream fOpenstream; |
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342 mng_closestream fClosestream; |
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343 #endif |
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344 mng_readdata fReaddata; |
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345 mng_writedata fWritedata; |
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346 mng_errorproc fErrorproc; |
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347 mng_traceproc fTraceproc; |
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348 mng_processheader fProcessheader; |
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349 mng_processtext fProcesstext; |
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350 mng_processsave fProcesssave; |
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351 mng_processseek fProcessseek; |
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352 mng_processneed fProcessneed; |
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353 mng_processmend fProcessmend; |
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354 mng_processunknown fProcessunknown; |
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355 mng_processterm fProcessterm; |
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356 mng_getcanvasline fGetcanvasline; |
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357 mng_getbkgdline fGetbkgdline; |
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358 mng_getalphaline fGetalphaline; |
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359 mng_refresh fRefresh; |
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360 mng_gettickcount fGettickcount; |
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361 mng_settimer fSettimer; |
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362 mng_processgamma fProcessgamma; |
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363 mng_processchroma fProcesschroma; |
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364 mng_processsrgb fProcesssrgb; |
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365 mng_processiccp fProcessiccp; |
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366 mng_processarow fProcessarow; |
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367 |
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368 #if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) |
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369 #ifndef MNG_NO_OLD_VERSIONS |
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370 mng_bool bPreDraft48; /* flags ancient style draft */ |
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371 #endif |
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372 |
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373 mng_chunkid iChunkname; /* read/write-state variables */ |
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374 mng_uint32 iChunkseq; |
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375 mng_chunkp pFirstchunk; /* double-linked list of */ |
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376 mng_chunkp pLastchunk; /* stored chunk-structures */ |
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377 |
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378 mng_bool bHasheader; /* first header chunk processed */ |
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379 mng_bool bHasMHDR; /* inside a MHDR-MEND sequence */ |
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380 mng_bool bHasIHDR; /* inside a IHDR-IEND sequence */ |
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381 mng_bool bHasBASI; /* inside a BASI-IEND sequence */ |
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382 mng_bool bHasDHDR; /* inside a DHDR-IEND sequence */ |
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383 #ifdef MNG_INCLUDE_JNG |
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384 mng_bool bHasJHDR; /* inside a JHDR-IEND sequence */ |
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385 mng_bool bHasJSEP; /* passed the JSEP separator */ |
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386 mng_bool bHasJDAA; /* at least 1 JDAA processed */ |
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387 mng_bool bHasJDAT; /* at least 1 JDAT processed */ |
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388 #endif |
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389 mng_bool bHasPLTE; /* PLTE chunk processed */ |
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390 mng_bool bHasTRNS; /* tRNS chunk processed */ |
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391 mng_bool bHasGAMA; /* gAMA chunk processed */ |
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392 mng_bool bHasCHRM; /* cHRM chunk processed */ |
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393 mng_bool bHasSRGB; /* sRGB chunk processed */ |
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394 mng_bool bHasICCP; /* iCCP chunk processed */ |
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395 mng_bool bHasBKGD; /* bKGD chunk processed */ |
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396 mng_bool bHasIDAT; /* at least 1 IDAT processed */ |
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397 |
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398 mng_bool bHasSAVE; /* SAVE chunk processed */ |
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399 mng_bool bHasBACK; /* BACK chunk processed */ |
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400 mng_bool bHasFRAM; /* FRAM chunk processed */ |
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401 mng_bool bHasTERM; /* TERM chunk processed */ |
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402 mng_bool bHasLOOP; /* at least 1 LOOP open */ |
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403 |
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404 mng_bool bHasglobalPLTE; /* global PLTE chunk processed */ |
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405 mng_bool bHasglobalTRNS; /* global tRNS chunk processed */ |
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406 mng_bool bHasglobalGAMA; /* global gAMA chunk processed */ |
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407 mng_bool bHasglobalCHRM; /* global cHRM chunk processed */ |
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408 mng_bool bHasglobalSRGB; /* global sRGB chunk processed */ |
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409 mng_bool bHasglobalICCP; /* global iCCP chunk processed */ |
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410 mng_bool bHasglobalBKGD; /* global bKGD chunk processed */ |
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411 |
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412 mng_uint32 iDatawidth; /* IHDR/BASI/DHDR fields */ |
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413 mng_uint32 iDataheight; /* valid if inside IHDR-IEND, */ |
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414 mng_uint8 iBitdepth; /* BASI-IEND or DHDR-IEND */ |
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415 mng_uint8 iColortype; |
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416 mng_uint8 iCompression; |
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417 mng_uint8 iFilter; |
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418 mng_uint8 iInterlace; |
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419 |
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420 mng_uint32 iPLTEcount; /* PLTE fields */ |
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421 |
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422 #ifdef MNG_INCLUDE_JNG |
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423 mng_uint8 iJHDRcolortype; /* JHDR fields */ |
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424 mng_uint8 iJHDRimgbitdepth; /* valid if inside JHDR-IEND */ |
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425 mng_uint8 iJHDRimgcompression; |
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426 mng_uint8 iJHDRimginterlace; |
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427 mng_uint8 iJHDRalphabitdepth; |
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428 mng_uint8 iJHDRalphacompression; |
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429 mng_uint8 iJHDRalphafilter; |
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430 mng_uint8 iJHDRalphainterlace; |
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431 #endif |
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432 |
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433 #endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */ |
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434 |
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435 #ifdef MNG_SUPPORT_READ |
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436 mng_bool bReading; /* read processing variables */ |
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437 mng_bool bHavesig; |
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438 mng_bool bEOF; |
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439 mng_uint32 iReadbufsize; |
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440 mng_uint8p pReadbuf; |
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441 |
|
442 mng_uint32 iLargebufsize; /* temp for very large chunks */ |
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443 mng_uint8p pLargebuf; |
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444 |
|
445 mng_uint32 iSuspendtime; /* tickcount at last suspension */ |
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446 mng_bool bSuspended; /* input-reading has been suspended; |
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447 we're expecting a call to |
|
448 mng_read_resume! */ |
|
449 mng_uint8 iSuspendpoint; /* indicates at which point the flow |
|
450 was broken to suspend input-reading */ |
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451 |
|
452 mng_bool bSuspensionmode; /* I/O-suspension variables */ |
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453 mng_uint32 iSuspendbufsize; |
|
454 mng_uint8p pSuspendbuf; |
|
455 mng_uint8p pSuspendbufnext; |
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456 mng_uint32 iSuspendbufleft; |
|
457 mng_uint32 iChunklen; /* chunk length */ |
|
458 mng_uint8p pReadbufnext; /* 32K+ suspension-processing */ |
|
459 mng_uint8p pLargebufnext; |
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460 |
|
461 mng_pushdatap pFirstpushchunk; /* variables for push mechanisms */ |
|
462 mng_pushdatap pLastpushchunk; |
|
463 mng_pushdatap pFirstpushdata; |
|
464 mng_pushdatap pLastpushdata; |
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465 #endif /* MNG_SUPPORT_READ */ |
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466 |
|
467 #ifdef MNG_SUPPORT_WRITE |
|
468 mng_bool bCreating; /* create/write processing variables */ |
|
469 mng_bool bWriting; |
|
470 mng_chunkid iFirstchunkadded; |
|
471 mng_uint32 iWritebufsize; |
|
472 mng_uint8p pWritebuf; |
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473 #endif |
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474 |
|
475 #ifdef MNG_SUPPORT_DISPLAY |
|
476 mng_bool bDisplaying; /* display-state variables */ |
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477 mng_bool bFramedone; |
|
478 mng_uint32 iFrameseq; |
|
479 mng_uint32 iLayerseq; |
|
480 mng_uint32 iFrametime; /* millisecs */ |
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481 |
|
482 mng_uint32 iTotalframes; /* end-totals after mng_read() */ |
|
483 mng_uint32 iTotallayers; |
|
484 mng_uint32 iTotalplaytime; /* millisecs */ |
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485 |
|
486 mng_bool bSkipping; /* LOOP iteration=0 */ |
|
487 |
|
488 #ifdef MNG_SUPPORT_DYNAMICMNG |
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489 mng_bool bDynamic; /* MNG is dynamic (eg. has events) */ |
|
490 mng_bool bRunningevent; /* currently processing an event */ |
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491 mng_bool bStopafterseek; /* stop after next SEEK */ |
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492 mng_int32 iEventx; /* X/Y of current event */ |
|
493 mng_int32 iEventy; |
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494 mng_objectp pLastmousemove; /* last event triggered */ |
|
495 #endif |
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496 |
|
497 mng_uint32 iRequestframe; /* go_xxxx variables */ |
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498 mng_uint32 iRequestlayer; |
|
499 mng_uint32 iRequesttime; |
|
500 mng_bool bSearching; |
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501 |
|
502 mng_bool bRestorebkgd; /* flags restore required before IDAT/JDAT */ |
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503 |
|
504 mng_uint32 iRuntime; /* millisecs since start */ |
|
505 mng_uint32 iSynctime; /* tickcount at last framesync */ |
|
506 mng_uint32 iStarttime; /* tickcount at start */ |
|
507 mng_uint32 iEndtime; /* tickcount at end */ |
|
508 mng_bool bRunning; /* animation is active */ |
|
509 mng_bool bTimerset; /* the timer has been set; |
|
510 we're expecting a call to |
|
511 mng_display_resume! */ |
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512 mng_uint8 iBreakpoint; /* indicates at which point the |
|
513 flow was broken to run the timer */ |
|
514 mng_bool bSectionwait; /* indicates a section break */ |
|
515 mng_bool bFreezing; /* indicates app requested a freeze */ |
|
516 mng_bool bResetting; /* indicates app requested a reset */ |
|
517 mng_bool bNeedrefresh; /* indicates screen-refresh is needed */ |
|
518 mng_bool bMisplacedTERM; /* indicates TERM is out of place */ |
|
519 mng_bool bOnlyfirstframe; /* show first frame after TERM and stop */ |
|
520 mng_uint32 iFramesafterTERM; /* determines frame-count after TERM */ |
|
521 mng_objectp pCurrentobj; /* current "object" */ |
|
522 mng_objectp pCurraniobj; /* current animation object |
|
523 "to be"/"being" processed */ |
|
524 mng_objectp pTermaniobj; /* TERM animation object */ |
|
525 mng_uint32 iIterations; /* TERM/MEND iteration count */ |
|
526 mng_objectp pObjzero; /* "on-the-fly" image (object = 0) */ |
|
527 mng_objectp pLastclone; /* last clone */ |
|
528 mng_objectp pStoreobj; /* current store object for row routines */ |
|
529 mng_objectp pStorebuf; /* current store object-buffer for row routines */ |
|
530 mng_objectp pRetrieveobj; /* current retrieve object for row routines */ |
|
531 mng_savedatap pSavedata; /* pointer to saved data (after SAVE) */ |
|
532 |
|
533 mng_uint32 iUpdateleft; /* update region for refresh */ |
|
534 mng_uint32 iUpdateright; |
|
535 mng_uint32 iUpdatetop; |
|
536 mng_uint32 iUpdatebottom; |
|
537 |
|
538 mng_int8 iPass; /* current interlacing pass; |
|
539 negative value means no interlace */ |
|
540 mng_int32 iRow; /* current row counter */ |
|
541 mng_int32 iRowinc; /* row increment for this pass */ |
|
542 mng_int32 iCol; /* current starting column */ |
|
543 mng_int32 iColinc; /* column increment for this pass */ |
|
544 mng_int32 iRowsamples; /* nr. of samples in current workrow */ |
|
545 mng_int32 iSamplemul; /* needed to calculate rowsize */ |
|
546 mng_int32 iSampleofs; /* from rowsamples */ |
|
547 mng_int32 iSamplediv; |
|
548 mng_int32 iRowsize; /* size of actual data in work row */ |
|
549 mng_int32 iRowmax; /* maximum size of data in work row */ |
|
550 mng_int32 iFilterofs; /* offset to filter-byte in work row */ |
|
551 mng_int32 iPixelofs; /* offset to pixel-bytes in work row */ |
|
552 mng_uint32 iLevel0; /* leveling variables */ |
|
553 mng_uint32 iLevel1; |
|
554 mng_uint32 iLevel2; |
|
555 mng_uint32 iLevel3; |
|
556 mng_uint8p pWorkrow; /* working row of pixel-data */ |
|
557 mng_uint8p pPrevrow; /* previous row of pixel-data */ |
|
558 mng_uint8p pRGBArow; /* intermediate row of RGBA8 or RGBA16 data */ |
|
559 mng_bool bIsRGBA16; /* indicates intermediate row is RGBA16 */ |
|
560 mng_bool bIsOpaque; /* indicates intermediate row is fully opaque */ |
|
561 mng_int32 iFilterbpp; /* bpp index for filtering routines */ |
|
562 |
|
563 mng_int32 iSourcel; /* variables for showing objects */ |
|
564 mng_int32 iSourcer; |
|
565 mng_int32 iSourcet; |
|
566 mng_int32 iSourceb; |
|
567 mng_int32 iDestl; |
|
568 mng_int32 iDestr; |
|
569 mng_int32 iDestt; |
|
570 mng_int32 iDestb; |
|
571 |
|
572 mng_objectp pFirstimgobj; /* double-linked list of */ |
|
573 mng_objectp pLastimgobj; /* image-object structures */ |
|
574 mng_objectp pFirstaniobj; /* double-linked list of */ |
|
575 mng_objectp pLastaniobj; /* animation-object structures */ |
|
576 #ifdef MNG_SUPPORT_DYNAMICMNG |
|
577 mng_objectp pFirstevent; /* double-linked list of */ |
|
578 mng_objectp pLastevent; /* event-object structures */ |
|
579 #endif |
|
580 |
|
581 #if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS) || defined(MNG_APP_CMS) |
|
582 mng_uint8 aGammatab[256]; /* precomputed gamma lookup table */ |
|
583 mng_float dLastgamma; /* last gamma used to compute table */ |
|
584 #endif |
|
585 |
|
586 mng_fptr fDisplayrow; /* internal callback to display an |
|
587 uncompressed/unfiltered/ |
|
588 color-corrected row */ |
|
589 mng_fptr fRestbkgdrow; /* internal callback for restore- |
|
590 background processing of a row */ |
|
591 mng_fptr fCorrectrow; /* internal callback to color-correct an |
|
592 uncompressed/unfiltered row */ |
|
593 mng_fptr fRetrieverow; /* internal callback to retrieve an |
|
594 uncompressed/unfiltered row of data */ |
|
595 mng_fptr fStorerow; /* internal callback to store an |
|
596 uncompressed/unfiltered row of data */ |
|
597 mng_fptr fProcessrow; /* internal callback to process an |
|
598 uncompressed row of data */ |
|
599 mng_fptr fDifferrow; /* internal callback to perform |
|
600 added filter leveling and |
|
601 differing on an unfiltered row */ |
|
602 mng_fptr fScalerow; /* internal callback to scale a |
|
603 delta-row to the bitdepth of its target */ |
|
604 mng_fptr fDeltarow; /* internal callback to execute a |
|
605 delta-row onto a target */ |
|
606 #ifndef MNG_SKIPCHUNK_PAST |
|
607 mng_fptr fFliprow; /* internal callback to flip a row of pixels |
|
608 left<->right for a PAST operation */ |
|
609 mng_fptr fTilerow; /* internal callback to tile a row of pixels |
|
610 during a PAST operation */ |
|
611 #endif |
|
612 mng_fptr fInitrowproc; /* internal callback to initialize |
|
613 the row processing */ |
|
614 |
|
615 mng_uint16 iDEFIobjectid; /* DEFI fields */ |
|
616 mng_bool bDEFIhasdonotshow; |
|
617 mng_uint8 iDEFIdonotshow; |
|
618 mng_bool bDEFIhasconcrete; |
|
619 mng_uint8 iDEFIconcrete; |
|
620 mng_bool bDEFIhasloca; |
|
621 mng_int32 iDEFIlocax; |
|
622 mng_int32 iDEFIlocay; |
|
623 mng_bool bDEFIhasclip; |
|
624 mng_int32 iDEFIclipl; |
|
625 mng_int32 iDEFIclipr; |
|
626 mng_int32 iDEFIclipt; |
|
627 mng_int32 iDEFIclipb; |
|
628 |
|
629 mng_uint16 iBACKred; /* BACK fields */ |
|
630 mng_uint16 iBACKgreen; |
|
631 mng_uint16 iBACKblue; |
|
632 mng_uint8 iBACKmandatory; |
|
633 mng_uint16 iBACKimageid; |
|
634 mng_uint8 iBACKtile; |
|
635 |
|
636 mng_int32 iBackimgoffsx; /* temp variables for restore_bkgd */ |
|
637 mng_int32 iBackimgoffsy; |
|
638 mng_uint32 iBackimgwidth; |
|
639 mng_uint32 iBackimgheight; |
|
640 |
|
641 #ifndef MNG_SKIPCHUNK_FRAM |
|
642 mng_uint8 iFRAMmode; /* FRAM fields (global) */ |
|
643 mng_uint32 iFRAMdelay; |
|
644 mng_uint32 iFRAMtimeout; |
|
645 mng_bool bFRAMclipping; |
|
646 mng_int32 iFRAMclipl; |
|
647 mng_int32 iFRAMclipr; |
|
648 mng_int32 iFRAMclipt; |
|
649 mng_int32 iFRAMclipb; |
|
650 |
|
651 mng_uint8 iFramemode; /* current subframe variables */ |
|
652 mng_uint32 iFramedelay; |
|
653 mng_uint32 iFrametimeout; |
|
654 mng_bool bFrameclipping; |
|
655 mng_int32 iFrameclipl; |
|
656 mng_int32 iFrameclipr; |
|
657 mng_int32 iFrameclipt; |
|
658 mng_int32 iFrameclipb; |
|
659 |
|
660 mng_uint32 iNextdelay; /* delay *after* next image */ |
|
661 |
|
662 mng_bool bForcedelay; |
|
663 mng_uint32 iAccumdelay; |
|
664 #endif |
|
665 |
|
666 #ifndef MNG_SKIPCHUNK_SHOW |
|
667 mng_uint8 iSHOWmode; /* SHOW fields */ |
|
668 mng_uint16 iSHOWfromid; |
|
669 mng_uint16 iSHOWtoid; |
|
670 mng_uint16 iSHOWnextid; |
|
671 mng_int16 iSHOWskip; |
|
672 #endif |
|
673 |
|
674 mng_uint32 iGlobalPLTEcount; /* global PLTE fields */ |
|
675 mng_rgbpaltab aGlobalPLTEentries; |
|
676 |
|
677 mng_uint32 iGlobalTRNSrawlen; /* global tRNS fields */ |
|
678 mng_uint8arr aGlobalTRNSrawdata; |
|
679 |
|
680 mng_uint32 iGlobalGamma; /* global gAMA fields */ |
|
681 |
|
682 #ifndef MNG_SKIPCHUNK_cHRM |
|
683 mng_uint32 iGlobalWhitepointx; /* global cHRM fields */ |
|
684 mng_uint32 iGlobalWhitepointy; |
|
685 mng_uint32 iGlobalPrimaryredx; |
|
686 mng_uint32 iGlobalPrimaryredy; |
|
687 mng_uint32 iGlobalPrimarygreenx; |
|
688 mng_uint32 iGlobalPrimarygreeny; |
|
689 mng_uint32 iGlobalPrimarybluex; |
|
690 mng_uint32 iGlobalPrimarybluey; |
|
691 #endif |
|
692 |
|
693 mng_uint8 iGlobalRendintent; /* global sRGB fields */ |
|
694 |
|
695 #ifndef MNG_SKIPCHUNK_iCCP |
|
696 mng_uint32 iGlobalProfilesize; /* global iCCP fields */ |
|
697 mng_ptr pGlobalProfile; |
|
698 #endif |
|
699 |
|
700 mng_uint16 iGlobalBKGDred; /* global bKGD fields */ |
|
701 mng_uint16 iGlobalBKGDgreen; |
|
702 mng_uint16 iGlobalBKGDblue; |
|
703 |
|
704 mng_ptr pDeltaImage; /* delta-image fields */ |
|
705 mng_uint8 iDeltaImagetype; |
|
706 #endif /* MNG_SUPPORT_DISPLAY */ |
|
707 mng_uint8 iDeltatype; /* need this one in read processing !! */ |
|
708 #ifdef MNG_SUPPORT_DISPLAY |
|
709 mng_uint32 iDeltaBlockwidth; |
|
710 mng_uint32 iDeltaBlockheight; |
|
711 mng_uint32 iDeltaBlockx; |
|
712 mng_uint32 iDeltaBlocky; |
|
713 mng_bool bDeltaimmediate; |
|
714 |
|
715 mng_fptr fDeltagetrow; /* internal delta-proc callbacks */ |
|
716 mng_fptr fDeltaaddrow; |
|
717 mng_fptr fDeltareplacerow; |
|
718 mng_fptr fDeltaputrow; |
|
719 |
|
720 #ifndef MNG_SKIPCHUNK_PROM |
|
721 mng_fptr fPromoterow; /* internal PROM fields */ |
|
722 mng_fptr fPromBitdepth; |
|
723 mng_ptr pPromBuf; |
|
724 mng_uint8 iPromColortype; |
|
725 mng_uint8 iPromBitdepth; |
|
726 mng_uint8 iPromFilltype; |
|
727 mng_uint32 iPromWidth; |
|
728 mng_ptr pPromSrc; |
|
729 mng_ptr pPromDst; |
|
730 #endif |
|
731 |
|
732 #ifndef MNG_SKIPCHUNK_MAGN |
|
733 mng_uint16 iMAGNfromid; |
|
734 mng_uint16 iMAGNcurrentid; |
|
735 mng_uint16 iMAGNtoid; |
|
736 #endif |
|
737 |
|
738 #ifndef MNG_SKIPCHUNK_PAST |
|
739 mng_uint16 iPASTid; |
|
740 mng_int32 iPastx; /* target x/y of last PAST */ |
|
741 mng_int32 iPasty; |
|
742 #endif |
|
743 |
|
744 mng_objectp pLastseek; /* last processed ani_seek object */ |
|
745 |
|
746 #ifdef MNG_INCLUDE_MPNG_PROPOSAL |
|
747 mng_objectp pMPNG; /* mpNG object if available */ |
|
748 #endif |
|
749 #ifdef MNG_INCLUDE_ANG_PROPOSAL |
|
750 mng_objectp pANG; /* ANG object if available */ |
|
751 #endif |
|
752 |
|
753 #endif /* MNG_SUPPORT_DISPLAY */ |
|
754 |
|
755 #ifdef MNG_INCLUDE_ZLIB |
|
756 z_stream sZlib; /* zlib (de)compression variables */ |
|
757 |
|
758 mng_int32 iZlevel; /* zlib compression parameters */ |
|
759 mng_int32 iZmethod; |
|
760 mng_int32 iZwindowbits; |
|
761 mng_int32 iZmemlevel; |
|
762 mng_int32 iZstrategy; |
|
763 |
|
764 mng_uint32 iMaxIDAT; /* maximum size of IDAT data */ |
|
765 |
|
766 mng_bool bInflating; /* indicates "inflate" in progress */ |
|
767 mng_bool bDeflating; /* indicates "deflate" in progress */ |
|
768 #endif /* MNG_INCLUDE_ZLIB */ |
|
769 |
|
770 #ifdef MNG_INCLUDE_JNG |
|
771 mngjpeg_dctmethod eJPEGdctmethod; /* IJG compression variables */ |
|
772 mng_int32 iJPEGquality; |
|
773 mng_int32 iJPEGsmoothing; |
|
774 mng_bool bJPEGcompressprogr; |
|
775 mng_bool bJPEGcompressopt; |
|
776 |
|
777 mng_uint32 iMaxJDAT; /* maximum size of JDAT/JDAA data */ |
|
778 |
|
779 mngjpeg_compp pJPEGcinfo; /* compression structure */ |
|
780 mngjpeg_errorp pJPEGcerr; /* error-manager compress */ |
|
781 |
|
782 mngjpeg_decompp pJPEGdinfo; /* decompression structure (JDAT) */ |
|
783 mngjpeg_errorp pJPEGderr; /* error-manager decompress (JDAT) */ |
|
784 mngjpeg_sourcep pJPEGdsrc; /* source-manager decompress (JDAT) */ |
|
785 |
|
786 mngjpeg_decompp pJPEGdinfo2; /* decompression structure (JDAA) */ |
|
787 mngjpeg_errorp pJPEGderr2; /* error-manager decompress (JDAA) */ |
|
788 mngjpeg_sourcep pJPEGdsrc2; /* source-manager decompress (JDAA) */ |
|
789 |
|
790 mng_uint8p pJPEGbuf; /* buffer for JPEG (de)compression (JDAT) */ |
|
791 mng_uint32 iJPEGbufmax; /* allocated space for buffer (JDAT) */ |
|
792 mng_uint8p pJPEGcurrent; /* current pointer into buffer (JDAT) */ |
|
793 mng_uint32 iJPEGbufremain; /* remaining bytes in buffer (JDAT) */ |
|
794 mng_uint32 iJPEGtoskip; /* bytes to skip on next input-block (JDAT) */ |
|
795 |
|
796 mng_uint8p pJPEGbuf2; /* buffer for JPEG (de)compression (JDAA) */ |
|
797 mng_uint32 iJPEGbufmax2; /* allocated space for buffer (JDAA) */ |
|
798 mng_uint8p pJPEGcurrent2; /* current pointer into buffer (JDAA) */ |
|
799 mng_uint32 iJPEGbufremain2; /* remaining bytes in buffer (JDAA) */ |
|
800 mng_uint32 iJPEGtoskip2; /* bytes to skip on next input-block (JDAA) */ |
|
801 |
|
802 mng_uint8p pJPEGrow; /* buffer for a JPEG row of samples (JDAT) */ |
|
803 mng_uint32 iJPEGrowlen; |
|
804 |
|
805 mng_uint8p pJPEGrow2; /* buffer for a JPEG row of samples (JDAA) */ |
|
806 mng_uint32 iJPEGrowlen2; |
|
807 |
|
808 mng_bool bJPEGcompress; /* indicates "compress" initialized */ |
|
809 |
|
810 mng_bool bJPEGdecompress; /* indicates "decompress" initialized (JDAT) */ |
|
811 mng_bool bJPEGhasheader; /* indicates "readheader" succeeded (JDAT) */ |
|
812 mng_bool bJPEGdecostarted; /* indicates "decompress" started (JDAT) */ |
|
813 mng_bool bJPEGscanstarted; /* indicates "first scan" started (JDAT) */ |
|
814 mng_bool bJPEGscanending; /* indicates "finish_output" suspended (JDAT) */ |
|
815 mng_bool bJPEGprogressive; /* indicates a progressive image (JDAT) */ |
|
816 |
|
817 mng_bool bJPEGdecompress2; /* indicates "decompress" initialized (JDAA) */ |
|
818 mng_bool bJPEGhasheader2; /* indicates "readheader" succeeded (JDAA) */ |
|
819 mng_bool bJPEGdecostarted2; /* indicates "decompress" started (JDAA) */ |
|
820 mng_bool bJPEGscanstarted2; /* indicates "first scan" started (JDAA) */ |
|
821 mng_bool bJPEGprogressive2; /* indicates a progressive image (JDAA) */ |
|
822 |
|
823 mng_fptr fStorerow2; /* internal callback to store an |
|
824 uncompressed/unfiltered row of JPEG-data (JDAT) */ |
|
825 |
|
826 mng_fptr fStorerow3; /* internal callback to store an |
|
827 uncompressed/unfiltered row of JPEG-data (JDAA) */ |
|
828 |
|
829 mng_uint32 iJPEGrow; /* row-number for current JPEG row */ |
|
830 mng_uint32 iJPEGalpharow; /* nr. of rows filled with alpha */ |
|
831 mng_uint32 iJPEGrgbrow; /* nr. of rows filled with 'color'-info */ |
|
832 mng_uint32 iJPEGdisprow; /* nr. of rows already displayed "on-the-fly" */ |
|
833 |
|
834 #if defined(MNG_USE_SETJMP) && defined (MNG_INCLUDE_IJG6B) |
|
835 jmp_buf sErrorbuf; /* setjmp/longjmp buffer (error-recovery) */ |
|
836 #endif |
|
837 |
|
838 #endif /* MNG_INCLUDE_JNG */ |
|
839 |
|
840 #ifndef MNG_USE_ZLIB_CRC |
|
841 mng_uint32 aCRCtable [256]; /* CRC prefab table */ |
|
842 mng_bool bCRCcomputed; /* "has been built" indicator */ |
|
843 #endif |
|
844 |
|
845 #ifdef MNG_OPTIMIZE_FOOTPRINT_INIT |
|
846 png_imgtype ePng_imgtype; |
|
847 #endif |
|
848 |
|
849 #if defined(MNG_NO_1_2_4BIT_SUPPORT) || defined(MNG_NO_16BIT_SUPPORT) |
|
850 mng_uint8 iPNGdepth; /* Real input depth */ |
|
851 mng_uint8 iPNGmult; |
|
852 #endif |
|
853 |
|
854 #ifdef MNG_OPTIMIZE_DISPLAYCALLS |
|
855 mng_uint32 iRawlen; /* temp vars for display processing */ |
|
856 mng_uint8p pRawdata; |
|
857 #ifndef MNG_SKIPCHUNK_BASI |
|
858 mng_uint16 iBASIred; |
|
859 mng_uint16 iBASIgreen; |
|
860 mng_uint16 iBASIblue; |
|
861 mng_bool bBASIhasalpha; |
|
862 mng_uint16 iBASIalpha; |
|
863 mng_uint8 iBASIviewable; |
|
864 #endif |
|
865 #ifndef MNG_SKIPCHUNK_CLON |
|
866 mng_uint16 iCLONsourceid; |
|
867 mng_uint16 iCLONcloneid; |
|
868 mng_uint8 iCLONclonetype; |
|
869 mng_bool bCLONhasdonotshow; |
|
870 mng_uint8 iCLONdonotshow; |
|
871 mng_uint8 iCLONconcrete; |
|
872 mng_bool bCLONhasloca; |
|
873 mng_uint8 iCLONlocationtype; |
|
874 mng_int32 iCLONlocationx; |
|
875 mng_int32 iCLONlocationy; |
|
876 #endif |
|
877 #ifndef MNG_SKIPCHUNK_DISC |
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878 mng_uint32 iDISCcount; |
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879 mng_uint16p pDISCids; |
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880 #endif |
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881 #ifndef MNG_SKIPCHUNK_FRAM |
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882 mng_uint8 iTempFramemode; |
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883 mng_uint8 iTempChangedelay; |
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884 mng_uint32 iTempDelay; |
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885 mng_uint8 iTempChangetimeout; |
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886 mng_uint32 iTempTimeout; |
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887 mng_uint8 iTempChangeclipping; |
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888 mng_uint8 iTempCliptype; |
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889 mng_int32 iTempClipl; |
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890 mng_int32 iTempClipr; |
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891 mng_int32 iTempClipt; |
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892 mng_int32 iTempClipb; |
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893 #endif |
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894 #ifndef MNG_SKIPCHUNK_MOVE |
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895 mng_uint16 iMOVEfromid; |
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896 mng_uint16 iMOVEtoid; |
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897 mng_uint8 iMOVEmovetype; |
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898 mng_int32 iMOVEmovex; |
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899 mng_int32 iMOVEmovey; |
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900 #endif |
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901 #ifndef MNG_SKIPCHUNK_CLIP |
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902 mng_uint16 iCLIPfromid; |
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903 mng_uint16 iCLIPtoid; |
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904 mng_uint8 iCLIPcliptype; |
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905 mng_int32 iCLIPclipl; |
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906 mng_int32 iCLIPclipr; |
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907 mng_int32 iCLIPclipt; |
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908 mng_int32 iCLIPclipb; |
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909 #endif |
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910 #ifndef MNG_NO_DELTA_PNG |
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911 mng_uint16 iDHDRobjectid; |
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912 mng_uint8 iDHDRimagetype; |
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913 mng_uint8 iDHDRdeltatype; |
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914 mng_uint32 iDHDRblockwidth; |
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915 mng_uint32 iDHDRblockheight; |
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916 mng_uint32 iDHDRblockx; |
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917 mng_uint32 iDHDRblocky; |
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918 mng_uint8 iPROMbitdepth; |
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919 mng_uint8 iPROMcolortype; |
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920 mng_uint8 iPROMfilltype; |
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921 mng_uint8 iPPLTtype; |
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922 mng_uint32 iPPLTcount; |
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923 mng_palette8ep paPPLTindexentries; |
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924 mng_uint8p paPPLTalphaentries; |
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925 mng_uint8p paPPLTusedentries; |
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926 #endif |
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927 #ifndef MNG_SKIPCHUNK_MAGN |
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928 mng_uint16 iMAGNfirstid; |
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929 mng_uint16 iMAGNlastid; |
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930 mng_uint8 iMAGNmethodX; |
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931 mng_uint16 iMAGNmX; |
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932 mng_uint16 iMAGNmY; |
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933 mng_uint16 iMAGNmL; |
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934 mng_uint16 iMAGNmR; |
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935 mng_uint16 iMAGNmT; |
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936 mng_uint16 iMAGNmB; |
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937 mng_uint8 iMAGNmethodY; |
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938 #endif |
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939 #ifndef MNG_SKIPCHUNK_PAST |
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940 mng_uint16 iPASTtargetid; |
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941 mng_uint8 iPASTtargettype; |
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942 mng_int32 iPASTtargetx; |
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943 mng_int32 iPASTtargety; |
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944 mng_uint32 iPASTcount; |
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945 mng_ptr pPASTsources; |
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946 #endif |
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947 #endif /* MNG_OPTIMIZE_DISPLAYCALLS */ |
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948 |
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949 } mng_data; |
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950 |
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951 typedef mng_data * mng_datap; |
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952 |
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953 /* ************************************************************************** */ |
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954 /* * * */ |
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955 /* * Internal Callback-Function prototypes * */ |
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956 /* * * */ |
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957 /* ************************************************************************** */ |
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958 |
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959 typedef mng_retcode(*mng_displayrow) (mng_datap pData); |
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960 typedef mng_retcode(*mng_restbkgdrow) (mng_datap pData); |
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961 typedef mng_retcode(*mng_correctrow) (mng_datap pData); |
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962 typedef mng_retcode(*mng_retrieverow) (mng_datap pData); |
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963 typedef mng_retcode(*mng_storerow) (mng_datap pData); |
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964 typedef mng_retcode(*mng_processrow) (mng_datap pData); |
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965 typedef mng_retcode(*mng_initrowproc) (mng_datap pData); |
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966 typedef mng_retcode(*mng_differrow) (mng_datap pData); |
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967 typedef mng_retcode(*mng_scalerow) (mng_datap pData); |
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968 typedef mng_retcode(*mng_deltarow) (mng_datap pData); |
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969 typedef mng_retcode(*mng_promoterow) (mng_datap pData); |
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970 typedef mng_retcode(*mng_fliprow) (mng_datap pData); |
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971 typedef mng_retcode(*mng_tilerow) (mng_datap pData); |
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972 |
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973 typedef mng_uint8 (*mng_bitdepth_8) (mng_uint8 iB); |
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974 typedef mng_uint16 (*mng_bitdepth_16) (mng_uint8 iB); |
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975 |
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976 typedef mng_retcode(*mng_magnify_x) (mng_datap pData, |
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977 mng_uint16 iMX, |
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978 mng_uint16 iML, |
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979 mng_uint16 iMR, |
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980 mng_uint32 iWidth, |
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981 mng_uint8p iSrcline, |
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982 mng_uint8p iDstline); |
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983 typedef mng_retcode(*mng_magnify_y) (mng_datap pData, |
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984 mng_int32 iM, |
|
985 mng_int32 iS, |
|
986 mng_uint32 iWidth, |
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987 mng_uint8p iSrcline1, |
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988 mng_uint8p iSrcline2, |
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989 mng_uint8p iDstline); |
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990 |
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991 /* ************************************************************************** */ |
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992 /* * * */ |
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993 /* * Routines for swapping byte-order from and to graphic files * */ |
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994 /* * (This code is adapted from the libpng package) * */ |
|
995 /* * * */ |
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996 /* ************************************************************************** */ |
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997 |
|
998 #ifndef MNG_BIGENDIAN_SUPPORTED |
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999 mng_uint32 mng_get_uint32 (mng_uint8p pBuf); |
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1000 mng_int32 mng_get_int32 (mng_uint8p pBuf); |
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1001 mng_uint16 mng_get_uint16 (mng_uint8p pBuf); |
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1002 void mng_put_uint32 (mng_uint8p pBuf, |
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1003 mng_uint32 i); |
|
1004 void mng_put_int32 (mng_uint8p pBuf, |
|
1005 mng_int32 i); |
|
1006 void mng_put_uint16 (mng_uint8p pBuf, |
|
1007 mng_uint16 i); |
|
1008 #else /* MNG_BIGENDIAN_SUPPORTED */ |
|
1009 #define mng_get_uint32(P) *(mng_uint32p)(P) |
|
1010 #define mng_get_int32(P) *(mng_int32p)(P) |
|
1011 #define mng_get_uint16(P) *(mng_uint16p)(P) |
|
1012 #define mng_put_uint32(P,I) *(mng_uint32p)(P) = (I) |
|
1013 #define mng_put_int32(P,I) *(mng_int32p)(P) = (I) |
|
1014 #define mng_put_uint16(P,I) *(mng_uint16p)(P) = (I) |
|
1015 #endif /* MNG_BIGENDIAN_SUPPORTED */ |
|
1016 |
|
1017 /* ************************************************************************** */ |
|
1018 /* * * */ |
|
1019 /* * Some handy(?) macro definitions * */ |
|
1020 /* * * */ |
|
1021 /* ************************************************************************** */ |
|
1022 |
|
1023 #define MAX_COORD(a, b) (((a) > (b)) ? (a) : (b)) |
|
1024 #define MIN_COORD(a, b) (((a) < (b)) ? (a) : (b)) |
|
1025 |
|
1026 /* ************************************************************************** */ |
|
1027 |
|
1028 #endif /* _libmng_data_h_ */ |
|
1029 |
|
1030 /* ************************************************************************** */ |
|
1031 /* * end of file * */ |
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1032 /* ************************************************************************** */ |