1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
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5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
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6 | |
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7 | #include <gperl.h> |
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8 | #include <gtk2perl.h> |
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9 | |
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10 | #define IW 80 |
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11 | |
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12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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13 | |
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14 | #define LINELENGTH 240 |
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15 | |
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16 | #define ELLIPSIS "\xe2\x80\xa6" |
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17 | |
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18 | static guint32 a85_val; |
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19 | static guint a85_cnt; |
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20 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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21 | |
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22 | static void |
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23 | a85_init (void) |
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24 | { |
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25 | a85_cnt = 4; |
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26 | a85_ptr = a85_buf; |
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27 | } |
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28 | |
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29 | static void |
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30 | a85_push (PerlIO *fp, guchar c) |
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31 | { |
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32 | a85_val = a85_val << 8 | c; |
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33 | |
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34 | if (!--a85_cnt) |
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35 | { |
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36 | a85_cnt = 4; |
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37 | if (a85_val) |
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38 | { |
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39 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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40 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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41 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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42 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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43 | a85_ptr[0] = (a85_val ) + 33; |
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44 | |
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45 | a85_ptr += 5; |
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46 | } |
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47 | else |
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48 | *a85_ptr++ = 'z'; |
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49 | |
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50 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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51 | { |
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52 | *a85_ptr++ = '\n'; |
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53 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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54 | a85_ptr = a85_buf; |
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55 | } |
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56 | } |
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57 | |
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58 | } |
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59 | |
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60 | static void |
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61 | a85_finish (PerlIO *fp) |
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62 | { |
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63 | while (a85_cnt != 4) |
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64 | a85_push (fp, 0); |
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65 | |
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66 | *a85_ptr++ = '~'; // probably buggy end-marker |
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67 | *a85_ptr++ = '>'; // probably buggy end-marker |
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68 | *a85_ptr++ = '\n'; |
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69 | |
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70 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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71 | } |
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72 | |
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73 | static void |
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74 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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75 | unsigned int *h, unsigned int *s, unsigned int *v) |
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76 | { |
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77 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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78 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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79 | unsigned int delta = mx - mn; |
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80 | |
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81 | *v = mx; |
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82 | |
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83 | *s = mx ? delta * 255 / mx : 0; |
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84 | |
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85 | if (delta == 0) |
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86 | *h = 0; |
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87 | else |
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88 | { |
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89 | if (r == mx) |
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90 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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91 | else if (g == mx) |
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92 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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93 | else if (b == mx) |
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94 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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95 | |
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96 | *h &= 255; |
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97 | } |
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98 | } |
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99 | |
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100 | ///////////////////////////////////////////////////////////////////////////// |
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101 | |
5 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
102 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
6 | |
103 | |
7 | PROTOTYPES: ENABLE |
104 | PROTOTYPES: ENABLE |
8 | |
105 | |
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106 | GdkPixbuf_noinc * |
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107 | transpose (GdkPixbuf *pb) |
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108 | CODE: |
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109 | { |
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110 | int w = gdk_pixbuf_get_width (pb); |
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111 | int h = gdk_pixbuf_get_height (pb); |
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112 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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113 | int x, y, i; |
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114 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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115 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
9 | |
116 | |
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117 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
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118 | |
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119 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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120 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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121 | |
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122 | for (y = 0; y < h; y++) |
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123 | for (x = 0; x < w; x++) |
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124 | for (i = 0; i < bpp; i++) |
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125 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
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126 | } |
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127 | OUTPUT: |
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128 | RETVAL |
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129 | |
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130 | GdkPixbuf_noinc * |
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131 | flop (GdkPixbuf *pb) |
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132 | CODE: |
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133 | { |
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134 | int w = gdk_pixbuf_get_width (pb); |
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135 | int h = gdk_pixbuf_get_height (pb); |
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136 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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137 | int x, y, i; |
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138 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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139 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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140 | |
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141 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
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142 | |
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143 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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144 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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145 | |
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146 | for (y = 0; y < h; y++) |
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147 | for (x = 0; x < w; x++) |
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148 | for (i = 0; i < bpp; i++) |
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149 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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150 | } |
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151 | OUTPUT: |
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152 | RETVAL |
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153 | |
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154 | ############################################################################# |
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155 | |
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156 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
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157 | |
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158 | GdkPixbuf_noinc * |
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159 | p7_to_pb (int w, int h, guchar *src) |
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160 | CODE: |
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161 | { |
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162 | int x, y; |
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163 | guchar *dst, *d; |
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164 | int dstr; |
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165 | |
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166 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
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167 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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168 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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169 | |
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170 | for (y = 0; y < h; y++) |
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171 | for (d = dst + y * dstr, x = 0; x < w; x++) |
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172 | { |
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173 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
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174 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
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175 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
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176 | |
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177 | src++; |
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178 | } |
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179 | } |
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180 | OUTPUT: |
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181 | RETVAL |
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182 | |
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183 | SV * |
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184 | pb_to_p7 (GdkPixbuf *pb) |
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185 | CODE: |
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186 | { |
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187 | int w = gdk_pixbuf_get_width (pb); |
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188 | int h = gdk_pixbuf_get_height (pb); |
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189 | int x, y; |
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190 | guchar *dst; |
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191 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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192 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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193 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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194 | int Er[IW], Eg[IW], Eb[IW]; |
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195 | int seed = 77; |
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196 | |
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197 | RETVAL = newSV (w * h); |
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198 | SvPOK_only (RETVAL); |
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199 | SvCUR_set (RETVAL, w * h); |
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200 | |
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201 | dst = SvPVX (RETVAL); |
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202 | |
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203 | memset (Er, 0, sizeof (int) * IW); |
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204 | memset (Eg, 0, sizeof (int) * IW); |
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205 | memset (Eb, 0, sizeof (int) * IW); |
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206 | |
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207 | /* some primitive error distribution + random dithering */ |
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208 | |
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209 | for (y = 0; y < h; y++) |
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210 | { |
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211 | int er = 0, eg = 0, eb = 0; |
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212 | |
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213 | for (x = 0; x < w; x++) |
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214 | { |
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215 | int r, g, b; |
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216 | guchar *p = src + x * bpp + y * sstr; |
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217 | |
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218 | r = ((p[0] + er + Er[x]) * 7 + 128) / 255; |
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219 | g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; |
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220 | b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; |
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221 | |
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222 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
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223 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
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224 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
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225 | |
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226 | er += p[0] - (r * 255 + 4) / 7; |
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227 | eg += p[1] - (g * 255 + 4) / 7; |
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228 | eb += p[2] - (b * 255 + 2) / 3; |
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229 | |
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230 | Er[x] = er / 2; er -= er / 2 + RAND % 5 - 2; |
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231 | Eg[x] = eg / 2; eg -= eg / 2 + RAND % 5 - 2; |
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232 | Eb[x] = eb / 2; eb -= eb / 2 + RAND % 5 - 2; |
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233 | |
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234 | *dst++ = r << 5 | g << 2 | b; |
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235 | } |
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236 | } |
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237 | } |
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238 | OUTPUT: |
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239 | RETVAL |
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240 | |
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241 | SV * |
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242 | make_histogram (SV *ar) |
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243 | CODE: |
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244 | { |
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245 | int i; |
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246 | AV *av, *result; |
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247 | |
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248 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
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249 | croak ("Not an array ref as first argument to make_histogram"); |
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250 | |
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251 | av = (AV *) SvRV (ar); |
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252 | result = newAV (); |
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253 | |
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254 | for (i = 0; i <= av_len (av); ++i) |
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255 | { |
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256 | const int HISTSIZE = 64; |
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257 | |
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258 | int j; |
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259 | SV *sv = *av_fetch (av, i, 1); |
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260 | STRLEN len; |
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261 | char *buf = SvPVbyte (sv, len); |
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262 | |
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263 | int tmphist[HISTSIZE]; |
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264 | float *hist; |
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265 | |
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266 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
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267 | SvPOK_on (histsv); |
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268 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
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269 | hist = (float *)SvPVX (histsv); |
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270 | |
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271 | Zero (tmphist, sizeof (tmphist), char); |
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272 | |
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273 | for (j = len; j--; ) |
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274 | { |
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275 | unsigned int idx |
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276 | = ((*buf & 0xc0) >> 2) |
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277 | | ((*buf & 0x18) >> 1) |
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278 | | (*buf & 0x03); |
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279 | |
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280 | ++tmphist[idx]; |
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281 | ++buf; |
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282 | } |
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283 | |
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284 | for (j = 0; j < HISTSIZE; ++j) |
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285 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
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286 | |
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287 | av_push (result, histsv); |
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288 | } |
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289 | |
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290 | RETVAL = newRV_noinc ((SV *)result); |
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291 | } |
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292 | OUTPUT: |
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293 | RETVAL |
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294 | |
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295 | |
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296 | |
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297 | ############################################################################# |
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298 | |
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299 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
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300 | |
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301 | void |
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302 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
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303 | CODE: |
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304 | { |
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305 | int w = gdk_pixbuf_get_width (pb); |
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306 | int h = gdk_pixbuf_get_height (pb); |
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307 | int x, y, i; |
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308 | guchar *dst; |
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309 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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310 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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311 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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312 | |
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313 | a85_init (); |
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314 | |
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315 | for (y = 0; y < h; y++) |
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316 | for (x = 0; x < w; x++) |
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317 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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318 | a85_push (fp, src [x * bpp + y * sstr + i]); |
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319 | |
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320 | a85_finish (fp); |
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321 | } |
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322 | |
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323 | void |
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324 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
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325 | CODE: |
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326 | { |
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327 | int w = gdk_pixbuf_get_width (pb); |
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328 | int h = gdk_pixbuf_get_height (pb); |
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329 | int x, y, i; |
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330 | guchar *dst; |
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331 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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332 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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333 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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334 | |
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335 | for (y = 0; y < h; y++) |
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336 | for (x = 0; x < w; x++) |
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337 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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338 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
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339 | } |
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340 | |
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341 | ############################################################################# |
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342 | |
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343 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
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344 | |
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345 | SV * |
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346 | pb_to_hv84 (GdkPixbuf *pb) |
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347 | CODE: |
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348 | { |
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349 | int w = gdk_pixbuf_get_width (pb); |
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350 | int h = gdk_pixbuf_get_height (pb); |
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351 | int x, y; |
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352 | guchar *dst; |
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353 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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354 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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355 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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356 | |
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357 | RETVAL = newSV (6 * 8 * 12 / 8); |
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358 | SvPOK_only (RETVAL); |
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359 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
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360 | |
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361 | dst = SvPVX (RETVAL); |
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362 | |
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363 | /* some primitive error distribution + random dithering */ |
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364 | |
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365 | for (y = 0; y < h; y++) |
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366 | { |
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367 | guchar *p = src + y * sstr; |
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368 | |
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369 | for (x = 0; x < w; x += 2) |
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370 | { |
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371 | unsigned int r, g, b, h, s, v, H, V1, V2; |
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372 | |
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373 | if (bpp == 3) |
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374 | r = *p++, g = *p++, b = *p++; |
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375 | else if (bpp == 1) |
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376 | r = g = b = *p++; |
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377 | else |
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378 | abort (); |
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379 | |
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380 | rgb_to_hsv (r, g, b, &h, &s, &v); |
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381 | |
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382 | H = (h * 15 / 255) << 4; |
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383 | V1 = v; |
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384 | |
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385 | if (bpp == 3) |
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386 | r = *p++, g = *p++, b = *p++; |
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387 | else if (bpp == 1) |
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388 | r = g = b = *p++; |
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389 | else |
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390 | abort (); |
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391 | |
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392 | rgb_to_hsv (r, g, b, &h, &s, &v); |
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393 | |
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394 | H |= h * 15 / 255; |
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395 | V2 = v; |
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396 | |
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397 | *dst++ = H; |
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398 | *dst++ = V1; |
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399 | *dst++ = V2; |
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400 | } |
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401 | } |
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402 | } |
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403 | OUTPUT: |
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404 | RETVAL |
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405 | |
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406 | SV * |
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407 | hv84_to_av (unsigned char *hv84) |
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408 | CODE: |
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409 | { |
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410 | int i = 72 / 3; |
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411 | AV *av = newAV (); |
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412 | |
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413 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
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414 | while (i--) |
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415 | { |
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416 | int h = *hv84++; |
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417 | int v1 = *hv84++; |
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418 | int v2 = *hv84++; |
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419 | |
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420 | av_push (av, newSViv (v1)); |
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421 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
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422 | av_push (av, newSViv (v2)); |
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423 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
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424 | } |
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425 | } |
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|
426 | OUTPUT: |
|
|
427 | RETVAL |
|
|
428 | |
|
|
429 | |
|
|
430 | |