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