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259 | daniel-mar | 1 | /* |
2 | This file is part of "Filter Foundry", a filter plugin for Adobe Photoshop |
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3 | Copyright (C) 2003-2009 Toby Thain, toby@telegraphics.com.au |
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4 | Copyright (C) 2018-2021 Daniel Marschall, ViaThinkSoft |
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5 | |||
6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2 of the License, or |
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9 | (at your option) any later version. |
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10 | |||
11 | This program is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |||
16 | You should have received a copy of the GNU General Public License |
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17 | along with this program; if not, write to the Free Software |
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18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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19 | */ |
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20 | |||
21 | #include "ff.h" |
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22 | |||
23 | #include "symtab.h" |
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24 | #include "node.h" |
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25 | #include "funcs.h" |
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26 | #include "y.tab.h" |
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27 | |||
28 | // Strict compatibility to Filter Factory |
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29 | //#define YUV_FILTER_FACTORY |
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30 | |||
31 | extern value_type var[]; |
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32 | extern int nplanes,varused[],cnvused; |
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33 | extern struct node *tree[]; |
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34 | |||
35 | // points to first row, first column of selection image data |
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36 | // this is used by src() and cnv() functions to access pixels |
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37 | unsigned char *image_ptr; |
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38 | |||
39 | extern int needinput; |
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40 | int state_changing_funcs_used; |
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41 | |||
42 | /* get prepared to evaluate expression trees-- |
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43 | this assumes that tree[] array is already set up |
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44 | return TRUE if we're ready to go |
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45 | */ |
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46 | |||
47 | // minimum setup required when formulae have not changed, |
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48 | // and a new preview is to be generated. (Called by recalc_preview()) |
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49 | void evalinit(){ |
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50 | int i; |
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51 | |||
52 | INITRANDSEED(); |
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53 | |||
54 | for (i=0; i<NUM_CELLS; ++i) { |
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55 | cell[i] = 0; |
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56 | } |
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57 | } |
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58 | |||
59 | // full setup for evaluation, called when formulae have changed. |
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60 | Boolean setup(FilterRecordPtr pb){ |
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61 | int i; |
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62 | |||
63 | // Attention: If you introduce new variables, please define them also in lexer.l |
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64 | if (HAS_BIG_DOC(pb)) { |
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65 | var['X'] = BIGDOC_FILTER_RECT(pb).right - BIGDOC_FILTER_RECT(pb).left; |
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66 | var['Y'] = BIGDOC_FILTER_RECT(pb).bottom - BIGDOC_FILTER_RECT(pb).top; |
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67 | } else { |
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68 | var['X'] = FILTER_RECT(pb).right - FILTER_RECT(pb).left; |
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69 | var['Y'] = FILTER_RECT(pb).bottom - FILTER_RECT(pb).top; |
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70 | } |
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71 | var['Z'] = nplanes; |
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72 | var['D'] = 1024; |
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73 | var['M'] = ff_c2m(var['X'],var['Y'])/2; |
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74 | |||
75 | /* initialise flags for tracking special variable usage */ |
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76 | for(i = 0; i < 0x100; i++) |
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77 | varused[i] = 0; |
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288 | daniel-mar | 78 | needall = cnvused = state_changing_funcs_used = 0; |
259 | daniel-mar | 79 | for(i = 0; i < nplanes; ++i){ |
80 | //char s[100];sprintf(s,"expr[%d]=%#x",i,expr[i]);dbg(s); |
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81 | if( tree[i] || (tree[i] = parseexpr(expr[i])) ) |
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82 | checkvars(tree[i],varused,&cnvused,&needall,&state_changing_funcs_used); |
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83 | else |
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84 | break; |
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85 | } |
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86 | needinput = ( cnvused || needall |
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87 | || varused['r'] || varused['g'] || varused['b'] || varused['a'] |
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88 | || varused['i'] || varused['u'] || varused['v'] || varused['c'] ); |
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89 | |||
90 | /* |
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91 | * Workaround for PSPI for GIMP: |
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92 | * Filters will only fill the bottom of the picture, not the whole canvas. |
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93 | * The reason is that OnContinue/main.c:RequestNext() processes the image in chunks, |
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94 | * and probably due to a bug, PSPI only applies the image data of the last chunk. |
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95 | * Workaround applied in FF 1.7: If the host is GIMP, then we set |
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96 | * needall=1 to disable chunked processing. |
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97 | */ |
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98 | if (pb->hostSig == HOSTSIG_GIMP) needall = true; |
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99 | |||
288 | daniel-mar | 100 | // If we want accurate rnd(a,b) results (i.e. FilterFoundry and FilterFactory output |
101 | // exactly the same picture), we must not use chunked processing. |
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102 | if (state_changing_funcs_used) needall = true; |
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103 | |||
259 | daniel-mar | 104 | evalinit(); |
105 | return i==nplanes; /* all required expressions parse OK */ |
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106 | } |
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107 | |||
108 | void evalpixel(unsigned char *outp,unsigned char *inp){ |
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109 | int f,k; |
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110 | |||
111 | if(needinput){ |
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112 | var['r'] = inp[0]; |
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113 | var['g'] = nplanes > 1 ? inp[1] : 0; |
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114 | var['b'] = nplanes > 2 ? inp[2] : 0; |
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115 | var['a'] = nplanes > 3 ? inp[3] : 0; |
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116 | |||
268 | daniel-mar | 117 | #ifdef YUV_FILTER_FACTORY |
259 | daniel-mar | 118 | if(varused['i']) var['i'] = (( 76L*var['r'])+(150L*var['g'])+( 29L*var['b']))/256; // range: [0..254] |
119 | if(varused['u']) var['u'] = ((-19L*var['r'])+(-37L*var['g'])+( 56L*var['b']))/256; // range: [-55..55] |
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120 | if(varused['v']) var['v'] = (( 78L*var['r'])+(-65L*var['g'])+(-13L*var['b']))/256; // range: [-77..77] |
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268 | daniel-mar | 121 | #else |
259 | daniel-mar | 122 | // These formulas are more accurate, e.g. pure white has now i=255 instead of 254 |
123 | |||
124 | // For Y, the definition is Y := 0.299R + 0.587G + 0.114B |
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125 | if(varused['i']) var['i'] = (( 299L*var['r'])+( 587L*var['g'])+( 114L*var['b']))/1000; // range: [0..255] |
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126 | |||
127 | // For U, the definition is U := (B-Y) * 0.493; the range would be [-111..111] |
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128 | // Filter Factory divided it by 2, resulting in a range of [-55..55]. |
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129 | // Due to compatibility reasons, we adopt that behavior. |
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130 | if(varused['u']) var['u'] = ((-147407L*var['r'])+(-289391L*var['g'])+( 436798L*var['b']))/2000000; // range: [-55..55] |
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131 | |||
132 | // For V, the definition is V := (R-Y) * 0.877; the range would be [-156..156] |
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133 | // Filter Factory divided it by 2, resulting in a range of [-78..78]. |
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134 | // Due to compatibility reasons, we adopt that behavior. |
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135 | if(varused['v']) var['v'] = (( 614777L*var['r'])+(-514799L*var['g'])+(- 99978L*var['b']))/2000000; // range: [-78..78] |
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268 | daniel-mar | 136 | #endif |
259 | daniel-mar | 137 | |
138 | } |
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139 | if(varused['d']) var['d'] = ff_c2d_negated(var['X']/2 - var['x'], var['Y']/2 - var['y']); |
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140 | if(varused['m']) var['m'] = ff_c2m(var['X']/2 - var['x'], var['Y']/2 - var['y']); |
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141 | |||
142 | for(k = 0; k < nplanes; ++k){ |
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143 | if(needinput) |
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144 | var['c'] = inp[k]; |
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145 | var['z'] = k; |
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146 | var['p'] = k; // undocumented alias of z |
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147 | f = eval(tree[k]); |
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148 | if (outp) |
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149 | outp[k] = f<0 ? 0 : (f>255 ? 255 : f); // clamp channel value to 0-255 |
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150 | } |
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151 | } |
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152 | |||
153 | /* Zoom and filter image. |
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154 | * Parameters: pb - Photoshop Filter parameter block |
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155 | * progress - whether to use Photoshop's progress bar |
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156 | * (not appropriate during preview) |
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157 | * filterRect - rectangle (within pb->inRect) |
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158 | * of area to be filtered. This may not correspond |
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159 | * to pb->filterRect, it may be just a piece. |
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160 | * outPiece - rectangle defining scaled output buffer. |
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161 | * In case of zoomed preview, this is physically |
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162 | * scaled FROM filterRect (or equal to filterRect |
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163 | * for unscaled 1:1 filtering). |
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164 | * outData - pointer to output data buffer |
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165 | * outRowBytes - row stride of output data buffer |
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166 | * zoom - pixel scale factor (both horiz & vert) |
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167 | * e.g. 2.0 means 1 output pixel per 2 input pixels. |
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168 | */ |
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169 | |||
170 | //#define PROCESS_SCALED_GAP_DEBUG 1 |
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171 | |||
172 | OSErr process_scaled_bigdoc(FilterRecordPtr pb, Boolean progress, |
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173 | VRect filterPiece, VRect outPiece, |
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174 | void *outData, long outRowBytes, double zoom){ |
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175 | unsigned char *inrow,*outrow,*outp; |
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176 | int j,i; |
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177 | int64_t t, ticks = TICKCOUNT(); |
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178 | double x,y,k; |
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179 | |||
180 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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181 | char s[0x200]; |
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182 | int last_good_x, last_good_y; |
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183 | last_good_y = -1; |
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184 | #endif |
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185 | |||
186 | VRect filterRect; |
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187 | VRect inRect; |
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188 | |||
189 | if (HAS_BIG_DOC(pb)) { |
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190 | filterRect = BIGDOC_FILTER_RECT(pb); |
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191 | inRect = BIGDOC_IN_RECT(pb); |
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192 | } else { |
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193 | filterRect.bottom = FILTER_RECT(pb).bottom; |
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194 | filterRect.left = FILTER_RECT(pb).left; |
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195 | filterRect.right = FILTER_RECT(pb).right; |
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196 | filterRect.top = FILTER_RECT(pb).top; |
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197 | inRect.bottom = IN_RECT(pb).bottom; |
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198 | inRect.left = IN_RECT(pb).left; |
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199 | inRect.right = IN_RECT(pb).right; |
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200 | inRect.top = IN_RECT(pb).top; |
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201 | } |
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202 | |||
203 | // find base pointer to selection image data |
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204 | image_ptr = (unsigned char*)pb->inData |
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205 | + (long)pb->inRowBytes*(filterRect.top - inRect.top) |
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206 | + (long)nplanes*(filterRect.left - inRect.left); |
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207 | |||
208 | if (state_changing_funcs_used) { |
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209 | // Fill gap between selection/filter top border and top preview zoomed border |
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210 | for (y = 0; y < (double)filterPiece.top - (double)filterRect.top; ++y) { |
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211 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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212 | if (state_changing_funcs_used && last_good_y != (int)floor(y-1)) { sprintf(s, "Non calculated Y gap, type 1: %f, last good %d, zoom %f\n", y, last_good_y, zoom); simplealert(s); } last_good_y = (int)floor(y); |
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213 | #endif |
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214 | |||
215 | var['y'] = (value_type)y; |
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216 | inrow = image_ptr + (long)(y)*pb->inRowBytes; |
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217 | |||
218 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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219 | last_good_x = -1; |
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220 | #endif |
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221 | |||
222 | for (x = 0; x < (double)filterRect.right - (double)filterRect.left; ++x) { |
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223 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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224 | if (state_changing_funcs_used && last_good_x != (int)floor(x-1)) { sprintf(s, "Non calculated X gap, type 1a: %f, last good %d, zoom %f\n", x, last_good_x, zoom); simplealert(s); } last_good_x = (int)floor(x); |
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225 | #endif |
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226 | |||
227 | var['x'] = (value_type)x; |
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228 | evalpixel(NULL,inrow + (long)(x)*nplanes); |
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229 | } |
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230 | |||
231 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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232 | if (var['x'] != var['X']-1) { sprintf(s, "X not at right border #1: x=%d, X=%d\n", var['x'], var['X']); simplealert(s); } |
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233 | #endif |
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234 | } |
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235 | } |
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236 | |||
237 | // j indexes scaled output rows |
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238 | for( j = outPiece.top, outrow = (unsigned char*)outData, y = (double)filterPiece.top - (double)filterRect.top ; |
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239 | j < outPiece.bottom ; ++j, outrow += outRowBytes, y += zoom ) |
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240 | { |
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241 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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242 | if (state_changing_funcs_used && last_good_y != (int)floor(y-1)) { sprintf(s, "Non calculated Y gap, type 1: %f, last good %d, zoom %f\n", y, last_good_y, zoom); simplealert(s); } last_good_y = (int)floor(y); |
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243 | #endif |
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244 | |||
245 | var['y'] = (value_type)y; // index of corresponding *input* row, top of selection == 0 |
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246 | inrow = image_ptr + (long)y*pb->inRowBytes; |
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247 | |||
248 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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249 | last_good_x = -1; |
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250 | #endif |
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251 | |||
252 | if (state_changing_funcs_used) { |
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253 | // Fill gap between left selection/image border and left border of the preview-area |
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254 | for (x = 0; x < (double)filterPiece.left - (double)filterRect.left; ++x) { |
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255 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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256 | if (state_changing_funcs_used && last_good_x != (int)floor(x-1)) { sprintf(s, "Non calculated X gap, type 2a: %f, last good %d, zoom %f\n", x, last_good_x, zoom); simplealert(s); } last_good_x = (int)floor(x); |
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257 | #endif |
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258 | |||
259 | var['x'] = (value_type)x; |
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260 | evalpixel(NULL,inrow + (long)(x)*nplanes); |
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261 | } |
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262 | } |
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263 | |||
264 | // i indexes scaled output columns |
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265 | for( outp = outrow, i = outPiece.left, x = (double)filterPiece.left - (double)filterRect.left ; |
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266 | i < outPiece.right ; ++i, outp += nplanes, x += zoom ) |
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267 | { |
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268 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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269 | if (state_changing_funcs_used && last_good_x != (int)floor(x-1)) { sprintf(s, "Non calculated X gap, type 2b: %f, last good %d, zoom %f\n", x, last_good_x, zoom); simplealert(s); } last_good_x = (int)floor(x); |
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270 | #endif |
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271 | |||
272 | var['x'] = (value_type)x; // index of corresponding *input* column, left of selection == 0 |
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273 | evalpixel(outp,inrow + (long)(x)*nplanes); /* var['x'] & var['y'] are implicit parameters */ |
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274 | |||
275 | if (state_changing_funcs_used) { |
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276 | // Fill gap between each X-preview-pixel (discarded pixels due to zoom level) |
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277 | for (k = x+1; floor(k) < floor(x + zoom); ++k) { |
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278 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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279 | if (state_changing_funcs_used && last_good_x != (int)floor(k-1)) { sprintf(s, "Non calculated X gap, type 2c: %f (x=%f), last good %d, zoom %f\n", k, x, last_good_x, zoom); simplealert(s); } last_good_x = (int)floor(k); |
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280 | #endif |
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281 | |||
282 | var['x'] = (value_type)k; |
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283 | if (var['x'] >= var['X']) break; |
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284 | evalpixel(NULL,inrow + (long)(k)*nplanes); |
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285 | } |
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286 | } |
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287 | } |
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288 | |||
289 | if (state_changing_funcs_used) { |
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290 | // Fill gap between right border of preview-area and right border of selection/image border |
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291 | |||
292 | for (x = (double)var['x']+1; x < (double)filterRect.right - (double)filterRect.left; ++x) { |
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293 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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294 | if (state_changing_funcs_used && last_good_x != (int)floor(x-1)) { sprintf(s, "Non calculated X gap, type 2d: %f, last good %d, zoom %f\n", x, last_good_x, zoom); simplealert(s); } last_good_x = (int)floor(x); |
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295 | #endif |
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296 | |||
297 | var['x'] = (value_type)x; |
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298 | evalpixel(NULL,inrow + (long)(x)*nplanes); |
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299 | } |
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300 | |||
301 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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302 | if (var['x'] != var['X']-1) { sprintf(s, "X not at right border #2: x=%d, X=%d\n", var['x'], var['X']); simplealert(s);} |
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303 | #endif |
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304 | |||
305 | // Fill gap between each Y-preview-pixel (discarded pixels due to zoom level), |
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306 | // but not for the very last line, since we are then done drawing our preview picture |
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307 | for (k = y+1; floor(k) < floor(y + zoom) && (j < outPiece.bottom-1); ++k) { |
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308 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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309 | if (state_changing_funcs_used && last_good_y != (int)floor(k-1)) { sprintf(s, "Non calculated Y gap, type 3a: %f (y=%f), last good %d, zoom %f\n", k, y, last_good_y, zoom); simplealert(s); } last_good_y = (int)floor(k); |
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310 | #endif |
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311 | |||
312 | var['y'] = (value_type)k; |
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313 | if (var['y'] >= var['Y']) break; |
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314 | inrow = image_ptr + (long)(k)*pb->inRowBytes; |
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315 | |||
316 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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317 | last_good_x = -1; |
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318 | #endif |
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319 | |||
320 | for (x = 0; x < (double)filterRect.right - (double)filterRect.left; ++x) { |
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321 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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322 | if (state_changing_funcs_used && last_good_x != (int)floor(x-1)) { sprintf(s, "Non calculated X gap, type 3b: %f, last good %d, zoom %f\n", x, last_good_x, zoom); simplealert(s); } last_good_x = (int)floor(x); |
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323 | #endif |
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324 | |||
325 | var['x'] = (value_type)x; |
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326 | evalpixel(NULL,inrow + (long)(x)*nplanes); |
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327 | } |
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328 | |||
329 | #ifdef PROCESS_SCALED_GAP_DEBUG |
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330 | if (var['x'] != var['X']-1) {sprintf(s, "X not at right border #3: x=%d, X=%d\n", var['x'], var['X']); simplealert(s);} |
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331 | #endif |
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332 | } |
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333 | } |
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334 | |||
335 | if(progress){ |
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336 | if((t = TICKCOUNT()) > ticks){ |
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337 | ticks = t + TICKS_SEC/4; |
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338 | if(pb->abortProc()) |
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339 | return userCanceledErr; |
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340 | else |
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341 | pb->progressProc((int)y - filterRect.top,filterRect.bottom - filterRect.top); |
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342 | } |
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268 | daniel-mar | 343 | }else{ |
344 | #ifdef MAC_ENV |
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259 | daniel-mar | 345 | /* to stop delays during typing of expressions, |
346 | immediately abort preview calculation if a key or mouse has been pressed. */ |
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347 | EventRecord event; |
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268 | daniel-mar | 348 | if(EventAvail(mDownMask|keyDownMask|autoKeyMask,&event)) { |
259 | daniel-mar | 349 | return userCanceledErr; |
268 | daniel-mar | 350 | } |
351 | #endif |
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259 | daniel-mar | 352 | } |
353 | } |
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354 | |||
355 | // Note for state_changing_funcs_used: We will not evaluate the gap between bottom border |
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356 | // of preview area and the bottom border of the selection/filter, because there are no |
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357 | // preview output pixels left that could be affected by these gap evaluations. |
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358 | |||
359 | return noErr; |
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360 | } |
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361 | |||
362 | OSErr process_scaled_olddoc(FilterRecordPtr pb, Boolean progress, |
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363 | Rect filterPiece, Rect outPiece, |
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364 | void* outData, long outRowBytes, double zoom) { |
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365 | |||
366 | VRect filterPiece32; |
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367 | VRect outPiece32; |
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368 | |||
369 | filterPiece32.bottom = filterPiece.bottom; |
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370 | filterPiece32.left = filterPiece.left; |
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371 | filterPiece32.right = filterPiece.right; |
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372 | filterPiece32.top = filterPiece.top; |
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373 | |||
374 | outPiece32.bottom = outPiece.bottom; |
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375 | outPiece32.left = outPiece.left; |
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376 | outPiece32.right = outPiece.right; |
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377 | outPiece32.top = outPiece.top; |
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378 | |||
379 | return process_scaled_bigdoc(pb, progress, filterPiece32, outPiece32, outData, outRowBytes, zoom); |
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380 | } |