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 <string.h> |
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6 | #include <setjmp.h> |
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7 | #include <math.h> |
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8 | |
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9 | #include <magic.h> |
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10 | |
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11 | #include <jpeglib.h> |
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12 | #include <jerror.h> |
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13 | |
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14 | #include <glib.h> |
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15 | #include <gtk/gtk.h> |
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16 | #include <gdk/gdkx.h> |
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17 | #include <gdk-pixbuf/gdk-pixbuf.h> |
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18 | |
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19 | #include <gperl.h> |
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20 | #include <gtk2perl.h> |
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21 | |
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22 | #include <assert.h> |
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23 | |
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24 | #if WEBP |
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25 | #include <webp/decode.h> |
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26 | #endif |
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27 | |
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28 | #include "perlmulticore.h" |
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29 | |
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30 | #define IW 80 /* MUST match Schnauzer.pm! */ |
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31 | #define IH 60 /* MUST match Schnauzer.pm! */ |
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32 | |
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33 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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34 | |
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35 | #define LINELENGTH 240 |
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36 | |
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37 | #define ELLIPSIS "\xe2\x80\xa6" |
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38 | |
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39 | typedef char *octet_string; |
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40 | |
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41 | static magic_t magic_cookie[2]; /* !mime, mime */ |
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42 | |
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43 | struct jpg_err_mgr |
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44 | { |
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45 | struct jpeg_error_mgr err; |
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46 | jmp_buf setjmp_buffer; |
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47 | }; |
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48 | |
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49 | static void |
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50 | cv_error_exit (j_common_ptr cinfo) |
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51 | { |
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52 | cinfo->err->output_message (cinfo); |
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53 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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54 | } |
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55 | |
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56 | static void |
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57 | cv_error_output (j_common_ptr cinfo) |
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58 | { |
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59 | char msg[JMSG_LENGTH_MAX]; |
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60 | |
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61 | cinfo->err->format_message (cinfo, msg); |
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62 | |
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63 | fprintf (stderr, "JPEG decoding error: %s\n", msg); |
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64 | return; |
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65 | } |
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66 | |
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67 | static void |
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68 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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69 | unsigned int *h, unsigned int *s, unsigned int *v) |
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70 | { |
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71 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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72 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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73 | unsigned int delta = mx - mn; |
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74 | |
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75 | *v = mx; |
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76 | |
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77 | *s = mx ? delta * 255 / mx : 0; |
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78 | |
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79 | if (delta == 0) |
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80 | *h = 0; |
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81 | else |
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82 | { |
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83 | if (r == mx) |
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84 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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85 | else if (g == mx) |
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86 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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87 | else if (b == mx) |
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88 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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89 | |
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90 | *h &= 255; |
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91 | } |
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92 | } |
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93 | |
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94 | struct feature { |
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95 | float v1, v2, v3; // mean, square, cube |
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96 | int n; |
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97 | }; |
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98 | |
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99 | static void |
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100 | feature_init (struct feature *f) |
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101 | { |
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102 | f->v1 = 0.; |
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103 | f->v2 = 0.; |
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104 | f->v3 = 0.; |
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105 | f->n = 0; |
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106 | } |
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107 | |
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108 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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109 | // elmex ist schuld. |
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110 | static void |
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111 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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112 | { |
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113 | f->v1 += v; |
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114 | f->n += 1; |
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115 | } |
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116 | |
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117 | static void |
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118 | feature_finish_pass_1 (struct feature *f) |
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119 | { |
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120 | if (f->n < 1) |
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121 | return; |
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122 | |
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123 | f->v1 /= f->n; |
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124 | } |
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125 | |
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126 | static void |
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127 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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128 | { |
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129 | float d = v - f->v1; |
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130 | |
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131 | f->v2 += d * d; |
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132 | f->v3 += d * d * d; |
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133 | } |
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134 | |
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135 | static void |
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136 | feature_finish_pass_2 (struct feature *f) |
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137 | { |
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138 | if (f->n < 1) |
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139 | return; |
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140 | |
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141 | f->v2 /= f->n; |
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142 | f->v3 /= f->n; |
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143 | |
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144 | f->v1 /= 255.; |
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145 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
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146 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
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147 | } |
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148 | |
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149 | static guint32 a85_val; |
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150 | static guint a85_cnt; |
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151 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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152 | |
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153 | static void |
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154 | a85_init (void) |
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155 | { |
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156 | a85_cnt = 4; |
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157 | a85_ptr = a85_buf; |
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158 | } |
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159 | |
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160 | static void |
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161 | a85_push (PerlIO *fp, guchar c) |
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162 | { |
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163 | a85_val = a85_val << 8 | c; |
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164 | |
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165 | if (!--a85_cnt) |
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166 | { |
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167 | a85_cnt = 4; |
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168 | if (a85_val) |
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169 | { |
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170 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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171 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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172 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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173 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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174 | a85_ptr[0] = (a85_val ) + 33; |
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175 | |
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176 | a85_ptr += 5; |
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177 | } |
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178 | else |
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179 | *a85_ptr++ = 'z'; |
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180 | |
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181 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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182 | { |
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183 | *a85_ptr++ = '\n'; |
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184 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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185 | a85_ptr = a85_buf; |
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186 | } |
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187 | } |
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188 | |
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189 | } |
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190 | |
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191 | static void |
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192 | a85_finish (PerlIO *fp) |
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193 | { |
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194 | while (a85_cnt != 4) |
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195 | a85_push (fp, 0); |
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196 | |
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197 | *a85_ptr++ = '~'; // probably buggy end-marker |
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198 | *a85_ptr++ = '>'; // probably buggy end-marker |
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199 | *a85_ptr++ = '\n'; |
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200 | |
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201 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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202 | } |
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203 | |
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204 | ///////////////////////////////////////////////////////////////////////////// |
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205 | |
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206 | static void cv_ms_init (j_decompress_ptr cinfo) |
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207 | { |
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208 | } |
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209 | |
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210 | static void cv_ms_term (j_decompress_ptr cinfo) |
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211 | { |
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212 | } |
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213 | |
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214 | static boolean cv_ms_fill (j_decompress_ptr cinfo) |
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215 | { |
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216 | ERREXIT (cinfo, JERR_INPUT_EMPTY); |
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217 | |
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218 | return TRUE; |
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219 | } |
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220 | |
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221 | static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes) |
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222 | { |
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223 | if (num_bytes > 0) |
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224 | { |
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225 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
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226 | |
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227 | src->next_input_byte += num_bytes; |
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228 | src->bytes_in_buffer -= num_bytes; |
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229 | } |
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230 | } |
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231 | |
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232 | static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen) |
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233 | { |
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234 | struct jpeg_source_mgr *src; |
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235 | |
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236 | if (!cinfo->src) |
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237 | cinfo->src = (struct jpeg_source_mgr *) |
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238 | (*cinfo->mem->alloc_small) ( |
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239 | (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr) |
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240 | ); |
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241 | |
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242 | src = (struct jpeg_source_mgr *)cinfo->src; |
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243 | src->init_source = cv_ms_init; |
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244 | src->fill_input_buffer = cv_ms_fill; |
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245 | src->skip_input_data = cv_ms_skip; |
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246 | src->resync_to_restart = jpeg_resync_to_restart; |
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247 | src->term_source = cv_ms_term; |
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248 | src->next_input_byte = (JOCTET *)buf; |
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249 | src->bytes_in_buffer = buflen; |
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250 | } |
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251 | |
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252 | ///////////////////////////////////////////////////////////////////////////// |
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253 | |
5 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
254 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
6 | |
255 | |
7 | PROTOTYPES: ENABLE |
256 | PROTOTYPES: ENABLE |
8 | |
257 | |
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258 | # missing function in perl. really :) |
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259 | int |
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260 | common_prefix_length (a, b) |
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261 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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262 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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263 | CODE: |
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264 | RETVAL = 0; |
9 | |
265 | |
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266 | while (*a == *b && *a) |
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267 | { |
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268 | RETVAL += (*a & 0xc0) != 0x80; |
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269 | a++, b++; |
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270 | } |
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271 | |
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272 | OUTPUT: |
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273 | RETVAL |
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274 | |
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275 | const char * |
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276 | magic (SV *path_or_data) |
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277 | ALIAS: |
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278 | magic = 0 |
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279 | magic_mime = 1 |
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280 | magic_buffer = 2 |
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281 | magic_buffer_mime = 3 |
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282 | CODE: |
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283 | { |
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284 | STRLEN len; |
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285 | char *data = SvPVbyte (path_or_data, len); |
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286 | |
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287 | if (!magic_cookie[0]) |
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288 | { |
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289 | magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
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290 | magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
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291 | magic_load (magic_cookie[0], 0); |
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292 | magic_load (magic_cookie[1], 0); |
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293 | } |
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294 | |
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295 | perlinterp_release (); |
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296 | |
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297 | RETVAL = ix & 2 |
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298 | ? magic_buffer (magic_cookie[ix & 1], data, len) |
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299 | : magic_file (magic_cookie[ix & 1], data); |
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300 | |
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301 | perlinterp_acquire (); |
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302 | } |
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303 | OUTPUT: |
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304 | RETVAL |
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305 | |
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306 | # missing/broken in Gtk2 perl module |
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307 | |
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308 | void |
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309 | gdk_window_clear_hints (GdkWindow *window) |
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310 | CODE: |
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311 | gdk_window_set_geometry_hints (window, 0, 0); |
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312 | |
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313 | gboolean |
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314 | gdk_net_wm_supports (GdkAtom property) |
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315 | CODE: |
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316 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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317 | RETVAL = gdk_net_wm_supports (property); |
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318 | #else |
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319 | RETVAL = 0; |
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320 | #endif |
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321 | OUTPUT: |
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322 | RETVAL |
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323 | |
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324 | GdkPixbuf_noinc * |
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325 | dealpha_expose (GdkPixbuf *pb) |
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326 | CODE: |
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327 | perlinterp_release (); |
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328 | { |
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329 | int w = gdk_pixbuf_get_width (pb); |
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330 | int h = gdk_pixbuf_get_height (pb); |
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331 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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332 | int x, y, i; |
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333 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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334 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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335 | |
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336 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
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337 | |
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338 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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339 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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340 | |
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341 | for (x = 0; x < w; x++) |
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342 | for (y = 0; y < h; y++) |
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343 | for (i = 0; i < 3; i++) |
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344 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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345 | } |
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346 | perlinterp_acquire (); |
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347 | OUTPUT: |
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348 | RETVAL |
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349 | |
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350 | GdkPixbuf_noinc * |
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351 | rotate (GdkPixbuf *pb, int angle) |
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352 | CODE: |
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353 | perlinterp_release (); |
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354 | if (angle < 0) |
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355 | angle += 360; |
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356 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
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357 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
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358 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
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359 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
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360 | : angle); |
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361 | perlinterp_acquire (); |
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362 | OUTPUT: |
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363 | RETVAL |
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364 | |
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365 | const char * |
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366 | filetype (SV *image_data) |
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367 | CODE: |
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368 | { |
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369 | STRLEN data_len; |
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370 | U8 *data = SvPVbyte (image_data, data_len); |
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371 | |
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372 | if (data_len >= 20 |
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373 | && data[0] == 0xff |
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374 | && data[1] == 0xd8 |
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375 | && data[2] == 0xff) |
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376 | RETVAL = "jpg"; |
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377 | else if (data_len >= 12 |
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378 | && data[ 0] == (U8)'R' |
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379 | && data[ 1] == (U8)'I' |
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380 | && data[ 2] == (U8)'F' |
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381 | && data[ 3] == (U8)'F' |
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382 | && data[ 8] == (U8)'W' |
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383 | && data[ 9] == (U8)'E' |
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384 | && data[10] == (U8)'B' |
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385 | && data[11] == (U8)'P') |
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386 | RETVAL = "webp"; |
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387 | else if (data_len >= 16 |
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388 | && data[ 0] == 0x89 |
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389 | && data[ 1] == (U8)'P' |
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390 | && data[ 2] == (U8)'N' |
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391 | && data[ 3] == (U8)'G' |
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392 | && data[ 4] == 0x0d |
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393 | && data[ 5] == 0x0a |
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394 | && data[ 6] == 0x1a |
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395 | && data[ 7] == 0x0a) |
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396 | RETVAL = "png"; |
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397 | else |
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398 | RETVAL = "other"; |
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399 | } |
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400 | OUTPUT: |
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401 | RETVAL |
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402 | |
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403 | GdkPixbuf_noinc * |
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404 | decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
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405 | CODE: |
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406 | { |
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407 | #if WEBP |
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408 | guchar *data; |
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409 | STRLEN data_size; |
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410 | int alpha; |
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411 | WebPDecoderConfig config; |
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412 | int inw, inh; |
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413 | |
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414 | data = SvPVbyte (image_data, data_size); |
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415 | |
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416 | perlinterp_release (); |
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417 | |
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418 | RETVAL = 0; |
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419 | |
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420 | if (!WebPInitDecoderConfig (&config)) |
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421 | goto err; |
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422 | |
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423 | config.options.use_threads = 1; |
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424 | |
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425 | if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK) |
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426 | goto err; |
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427 | |
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428 | inw = config.input.width; |
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429 | inh = config.input.height; |
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430 | |
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431 | if (thumbnail) |
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432 | { |
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433 | if (inw * ih > inh * iw) |
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434 | ih = (iw * inh + inw - 1) / inw; |
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435 | else |
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436 | iw = (ih * inw + inh - 1) / inh; |
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437 | |
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438 | config.options.bypass_filtering = 1; |
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439 | config.options.no_fancy_upsampling = 1; |
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440 | |
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441 | config.options.use_scaling = 1; |
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442 | config.options.scaled_width = iw; |
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443 | config.options.scaled_height = ih; |
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444 | } |
|
|
445 | else |
|
|
446 | { |
|
|
447 | iw = inw; |
|
|
448 | ih = inh; |
|
|
449 | } |
|
|
450 | |
|
|
451 | alpha = config.input.has_alpha; |
|
|
452 | |
|
|
453 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih); |
|
|
454 | if (!RETVAL) |
|
|
455 | goto err; |
|
|
456 | |
|
|
457 | config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; |
|
|
458 | config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); |
|
|
459 | config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
460 | config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); |
|
|
461 | config.output.is_external_memory = 1; |
|
|
462 | |
|
|
463 | if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK) |
|
|
464 | { |
|
|
465 | g_object_unref (RETVAL); |
|
|
466 | RETVAL = 0; |
|
|
467 | goto err; |
|
|
468 | } |
|
|
469 | |
|
|
470 | err: |
|
|
471 | perlinterp_acquire (); |
|
|
472 | #else |
|
|
473 | croak ("load_webp: webp not enabled at compile time"); |
|
|
474 | #endif |
|
|
475 | } |
|
|
476 | OUTPUT: |
|
|
477 | RETVAL |
|
|
478 | |
|
|
479 | GdkPixbuf_noinc * |
|
|
480 | decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
481 | CODE: |
|
|
482 | { |
|
|
483 | struct jpeg_decompress_struct cinfo; |
|
|
484 | struct jpg_err_mgr jerr; |
|
|
485 | int rs; |
|
|
486 | volatile GdkPixbuf *pb = 0; |
|
|
487 | STRLEN data_len; |
|
|
488 | guchar *data = SvPVbyte (image_data, data_len); |
|
|
489 | |
|
|
490 | RETVAL = 0; |
|
|
491 | |
|
|
492 | perlinterp_release (); |
|
|
493 | |
|
|
494 | cinfo.err = jpeg_std_error (&jerr.err); |
|
|
495 | |
|
|
496 | jerr.err.error_exit = cv_error_exit; |
|
|
497 | jerr.err.output_message = cv_error_output; |
|
|
498 | |
|
|
499 | if ((rs = setjmp (jerr.setjmp_buffer))) |
|
|
500 | { |
|
|
501 | jpeg_destroy_decompress (&cinfo); |
|
|
502 | |
|
|
503 | if (pb) |
|
|
504 | g_object_unref ((gpointer)pb); |
|
|
505 | |
|
|
506 | perlinterp_acquire (); |
|
|
507 | XSRETURN_UNDEF; |
|
|
508 | } |
|
|
509 | |
|
|
510 | jpeg_create_decompress (&cinfo); |
|
|
511 | cv_jpeg_mem_src (&cinfo, data, data_len); |
|
|
512 | |
|
|
513 | jpeg_read_header (&cinfo, TRUE); |
|
|
514 | |
|
|
515 | cinfo.dct_method = JDCT_DEFAULT; |
|
|
516 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
|
|
517 | cinfo.do_block_smoothing = FALSE; |
|
|
518 | cinfo.out_color_space = JCS_RGB; |
|
|
519 | cinfo.quantize_colors = FALSE; |
|
|
520 | |
|
|
521 | cinfo.scale_num = 1; |
|
|
522 | cinfo.scale_denom = 1; |
|
|
523 | |
|
|
524 | jpeg_calc_output_dimensions (&cinfo); |
|
|
525 | |
|
|
526 | if (thumbnail) |
|
|
527 | { |
|
|
528 | cinfo.dct_method = JDCT_FASTEST; |
|
|
529 | cinfo.do_fancy_upsampling = FALSE; |
|
|
530 | |
|
|
531 | while (cinfo.scale_denom < 8 |
|
|
532 | && cinfo.output_width >= iw*4 |
|
|
533 | && cinfo.output_height >= ih*4) |
|
|
534 | { |
|
|
535 | cinfo.scale_denom <<= 1; |
|
|
536 | jpeg_calc_output_dimensions (&cinfo); |
|
|
537 | } |
|
|
538 | } |
|
|
539 | |
|
|
540 | if (cinfo.output_components != 3) |
|
|
541 | longjmp (jerr.setjmp_buffer, 3); |
|
|
542 | |
|
|
543 | if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) |
|
|
544 | { |
|
|
545 | cinfo.out_color_space = JCS_CMYK; |
|
|
546 | cinfo.output_components = 4; |
|
|
547 | } |
|
|
548 | |
|
|
549 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
|
|
550 | if (!RETVAL) |
|
|
551 | longjmp (jerr.setjmp_buffer, 2); |
|
|
552 | |
|
|
553 | data = gdk_pixbuf_get_pixels (RETVAL); |
|
|
554 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
555 | |
|
|
556 | jpeg_start_decompress (&cinfo); |
|
|
557 | |
|
|
558 | while (cinfo.output_scanline < cinfo.output_height) |
|
|
559 | { |
|
|
560 | int remaining = cinfo.output_height - cinfo.output_scanline; |
|
|
561 | JSAMPROW rp[4]; |
|
|
562 | |
|
|
563 | rp [0] = data + cinfo.output_scanline * rs; |
|
|
564 | rp [1] = (guchar *)rp [0] + rs; |
|
|
565 | rp [2] = (guchar *)rp [1] + rs; |
|
|
566 | rp [3] = (guchar *)rp [2] + rs; |
|
|
567 | |
|
|
568 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
|
|
569 | } |
|
|
570 | |
|
|
571 | if (cinfo.out_color_space == JCS_CMYK) |
|
|
572 | { |
|
|
573 | guchar *end = data + cinfo.output_height * rs; |
|
|
574 | |
|
|
575 | while (data < end) |
|
|
576 | { |
|
|
577 | U32 c = data [0]; |
|
|
578 | U32 m = data [1]; |
|
|
579 | U32 y = data [2]; |
|
|
580 | U32 k = data [3]; |
|
|
581 | |
|
|
582 | if (0) |
|
|
583 | if (cinfo.Adobe_transform == 2) |
|
|
584 | { |
|
|
585 | c ^= 0xff; |
|
|
586 | m ^= 0xff; |
|
|
587 | y ^= 0xff; |
|
|
588 | k ^= 0xff; |
|
|
589 | } |
|
|
590 | |
|
|
591 | data [0] = (c * k + 0x80) / 0xff; |
|
|
592 | data [1] = (m * k + 0x80) / 0xff; |
|
|
593 | data [2] = (y * k + 0x80) / 0xff; |
|
|
594 | data [3] = 0xff; |
|
|
595 | |
|
|
596 | data += 4; |
|
|
597 | } |
|
|
598 | } |
|
|
599 | |
|
|
600 | jpeg_finish_decompress (&cinfo); |
|
|
601 | jpeg_destroy_decompress (&cinfo); |
|
|
602 | perlinterp_acquire (); |
|
|
603 | } |
|
|
604 | OUTPUT: |
|
|
605 | RETVAL |
|
|
606 | |
|
|
607 | void |
|
|
608 | compare (GdkPixbuf *a, GdkPixbuf *b) |
|
|
609 | PPCODE: |
|
|
610 | perlinterp_release (); |
|
|
611 | { |
|
|
612 | int w = gdk_pixbuf_get_width (a); |
|
|
613 | int h = gdk_pixbuf_get_height (a); |
|
|
614 | |
|
|
615 | int sa = gdk_pixbuf_get_rowstride (a); |
|
|
616 | int sb = gdk_pixbuf_get_rowstride (b); |
|
|
617 | |
|
|
618 | guchar *pa = gdk_pixbuf_get_pixels (a); |
|
|
619 | guchar *pb = gdk_pixbuf_get_pixels (b); |
|
|
620 | |
|
|
621 | int x, y; |
|
|
622 | |
|
|
623 | assert (w == gdk_pixbuf_get_width (b)); |
|
|
624 | assert (h == gdk_pixbuf_get_height (b)); |
|
|
625 | |
|
|
626 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
|
|
627 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
|
|
628 | |
|
|
629 | double diff = 0.; |
|
|
630 | int peak = 0; |
|
|
631 | |
|
|
632 | if (w && h) |
|
|
633 | for (y = 0; y < h; y++) |
|
|
634 | { |
|
|
635 | guchar *pa_ = pa + y * sa; |
|
|
636 | guchar *pb_ = pb + y * sb; |
|
|
637 | |
|
|
638 | for (x = 0; x < w; x++) |
|
|
639 | { |
|
|
640 | int d; |
|
|
641 | |
|
|
642 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
643 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
644 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
645 | } |
|
|
646 | } |
|
|
647 | |
|
|
648 | perlinterp_acquire (); |
|
|
649 | |
|
|
650 | EXTEND (SP, 2); |
|
|
651 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
652 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
|
|
653 | } |
|
|
654 | |
|
|
655 | ############################################################################# |
|
|
656 | |
|
|
657 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
|
|
658 | |
|
|
659 | # currently only works for filenames (octet strings) |
|
|
660 | |
|
|
661 | SV * |
|
|
662 | foldcase (SV *pathsv) |
|
|
663 | PROTOTYPE: $ |
|
|
664 | CODE: |
|
|
665 | { |
|
|
666 | STRLEN plen; |
|
|
667 | U8 *path = (U8 *)SvPV (pathsv, plen); |
|
|
668 | U8 *pend = path + plen; |
|
|
669 | U8 dst [plen * 6 * 3], *dstp = dst; |
|
|
670 | |
|
|
671 | while (path < pend) |
|
|
672 | { |
|
|
673 | U8 ch = *path; |
|
|
674 | |
|
|
675 | if (ch >= 'a' && ch <= 'z') |
|
|
676 | *dstp++ = *path++; |
|
|
677 | else if (ch >= 'A' && ch <= 'Z') |
|
|
678 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
679 | else if (ch >= '0' && ch <= '9') |
|
|
680 | { |
|
|
681 | STRLEN el, nl = 0; |
|
|
682 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
683 | path++, nl++; |
|
|
684 | |
|
|
685 | for (el = nl; el < 6; el++) |
|
|
686 | *dstp++ = '0'; |
|
|
687 | |
|
|
688 | memcpy (dstp, path - nl, nl); |
|
|
689 | dstp += nl; |
|
|
690 | } |
|
|
691 | else |
|
|
692 | *dstp++ = *path++; |
|
|
693 | #if 0 |
|
|
694 | else |
|
|
695 | { |
|
|
696 | STRLEN cl; |
|
|
697 | to_utf8_fold (path, dstp, &cl); |
|
|
698 | dstp += cl; |
|
|
699 | path += is_utf8_char (path); |
|
|
700 | } |
|
|
701 | #endif |
|
|
702 | } |
|
|
703 | |
|
|
704 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
705 | } |
|
|
706 | OUTPUT: |
|
|
707 | RETVAL |
|
|
708 | |
|
|
709 | GdkPixbuf_noinc * |
|
|
710 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
711 | PROTOTYPE: @ |
|
|
712 | CODE: |
|
|
713 | { |
|
|
714 | int x, y; |
|
|
715 | guchar *dst, *d; |
|
|
716 | int dstr; |
|
|
717 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
|
|
718 | |
|
|
719 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
|
|
720 | dst = gdk_pixbuf_get_pixels (RETVAL); |
|
|
721 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
722 | |
|
|
723 | for (y = 0; y < h; y++) |
|
|
724 | for (d = dst + y * dstr, x = 0; x < w; x++) |
|
|
725 | { |
|
|
726 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
|
|
727 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
|
|
728 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
|
|
729 | |
|
|
730 | src++; |
|
|
731 | } |
|
|
732 | } |
|
|
733 | OUTPUT: |
|
|
734 | RETVAL |
|
|
735 | |
|
|
736 | ############################################################################# |
|
|
737 | |
|
|
738 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
739 | |
|
|
740 | void |
|
|
741 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
742 | CODE: |
|
|
743 | { |
|
|
744 | int w = gdk_pixbuf_get_width (pb); |
|
|
745 | int h = gdk_pixbuf_get_height (pb); |
|
|
746 | int x, y, i; |
|
|
747 | guchar *dst; |
|
|
748 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
749 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
750 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
751 | |
|
|
752 | a85_init (); |
|
|
753 | |
|
|
754 | for (y = 0; y < h; y++) |
|
|
755 | for (x = 0; x < w; x++) |
|
|
756 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
757 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
758 | |
|
|
759 | a85_finish (fp); |
|
|
760 | } |
|
|
761 | |
|
|
762 | void |
|
|
763 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
764 | CODE: |
|
|
765 | { |
|
|
766 | int w = gdk_pixbuf_get_width (pb); |
|
|
767 | int h = gdk_pixbuf_get_height (pb); |
|
|
768 | int x, y, i; |
|
|
769 | guchar *dst; |
|
|
770 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
771 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
772 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
773 | |
|
|
774 | for (y = 0; y < h; y++) |
|
|
775 | for (x = 0; x < w; x++) |
|
|
776 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
777 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
778 | } |
|
|
779 | |
|
|
780 | ############################################################################# |
|
|
781 | |
|
|
782 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
783 | |
|
|
784 | SV * |
|
|
785 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
786 | CODE: |
|
|
787 | { |
|
|
788 | int w = gdk_pixbuf_get_width (pb); |
|
|
789 | int h = gdk_pixbuf_get_height (pb); |
|
|
790 | int x, y; |
|
|
791 | guchar *dst; |
|
|
792 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
793 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
794 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
795 | |
|
|
796 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
|
797 | SvPOK_only (RETVAL); |
|
|
798 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
|
799 | |
|
|
800 | dst = (guchar *)SvPVX (RETVAL); |
|
|
801 | |
|
|
802 | /* some primitive error distribution + random dithering */ |
|
|
803 | |
|
|
804 | for (y = 0; y < h; y++) |
|
|
805 | { |
|
|
806 | guchar *p = src + y * sstr; |
|
|
807 | |
|
|
808 | for (x = 0; x < w; x += 2) |
|
|
809 | { |
|
|
810 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
|
811 | |
|
|
812 | if (bpp == 3) |
|
|
813 | r = *p++, g = *p++, b = *p++; |
|
|
814 | else if (bpp == 1) |
|
|
815 | r = g = b = *p++; |
|
|
816 | else |
|
|
817 | abort (); |
|
|
818 | |
|
|
819 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
820 | |
|
|
821 | H = (h * 15 / 255) << 4; |
|
|
822 | V1 = v; |
|
|
823 | |
|
|
824 | if (bpp == 3) |
|
|
825 | r = *p++, g = *p++, b = *p++; |
|
|
826 | else if (bpp == 1) |
|
|
827 | r = g = b = *p++; |
|
|
828 | else |
|
|
829 | abort (); |
|
|
830 | |
|
|
831 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
832 | |
|
|
833 | H |= h * 15 / 255; |
|
|
834 | V2 = v; |
|
|
835 | |
|
|
836 | *dst++ = H; |
|
|
837 | *dst++ = V1; |
|
|
838 | *dst++ = V2; |
|
|
839 | } |
|
|
840 | } |
|
|
841 | } |
|
|
842 | OUTPUT: |
|
|
843 | RETVAL |
|
|
844 | |
|
|
845 | SV * |
|
|
846 | hv84_to_av (unsigned char *hv84) |
|
|
847 | CODE: |
|
|
848 | { |
|
|
849 | int i = 72 / 3; |
|
|
850 | AV *av = newAV (); |
|
|
851 | |
|
|
852 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
853 | while (i--) |
|
|
854 | { |
|
|
855 | int h = *hv84++; |
|
|
856 | int v1 = *hv84++; |
|
|
857 | int v2 = *hv84++; |
|
|
858 | |
|
|
859 | av_push (av, newSViv (v1)); |
|
|
860 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
861 | av_push (av, newSViv (v2)); |
|
|
862 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
863 | } |
|
|
864 | } |
|
|
865 | OUTPUT: |
|
|
866 | RETVAL |
|
|
867 | |
|
|
868 | ############################################################################# |
|
|
869 | |
|
|
870 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
|
|
871 | |
|
|
872 | SV * |
|
|
873 | extract_features (SV *ar) |
|
|
874 | CODE: |
|
|
875 | { |
|
|
876 | int i; |
|
|
877 | AV *av, *result; |
|
|
878 | |
|
|
879 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
880 | croak ("Not an array ref as first argument to extract_features"); |
|
|
881 | |
|
|
882 | av = (AV *) SvRV (ar); |
|
|
883 | result = newAV (); |
|
|
884 | |
|
|
885 | for (i = 0; i <= av_len (av); ++i) |
|
|
886 | { |
|
|
887 | SV *sv = *av_fetch (av, i, 1); |
|
|
888 | SV *histsv = newSV (9 * sizeof (float) + 1); |
|
|
889 | |
|
|
890 | SvPOK_on (histsv); |
|
|
891 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
892 | float *hist = (float *)SvPVX (histsv); |
|
|
893 | |
|
|
894 | struct feature f_h, f_s, f_v; |
|
|
895 | feature_init (&f_h); |
|
|
896 | feature_init (&f_s); |
|
|
897 | feature_init (&f_v); |
|
|
898 | |
|
|
899 | { |
|
|
900 | STRLEN len; |
|
|
901 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
902 | while (len >= 3) |
|
|
903 | { |
|
|
904 | unsigned int r, g, b, h, s, v; |
|
|
905 | r = *buf++; g = *buf++; b = *buf++; |
|
|
906 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
907 | |
|
|
908 | feature_update_pass_1 (&f_h, h); |
|
|
909 | feature_update_pass_1 (&f_s, s); |
|
|
910 | feature_update_pass_1 (&f_v, v); |
|
|
911 | |
|
|
912 | len -= 3; |
|
|
913 | } |
|
|
914 | |
|
|
915 | feature_finish_pass_1 (&f_h); |
|
|
916 | feature_finish_pass_1 (&f_s); |
|
|
917 | feature_finish_pass_1 (&f_v); |
|
|
918 | } |
|
|
919 | |
|
|
920 | { |
|
|
921 | STRLEN len; |
|
|
922 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
923 | while (len >= 3) |
|
|
924 | { |
|
|
925 | unsigned int r, g, b, h, s, v; |
|
|
926 | r = *buf++; g = *buf++; b = *buf++; |
|
|
927 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
928 | |
|
|
929 | feature_update_pass_2 (&f_h, h); |
|
|
930 | feature_update_pass_2 (&f_s, s); |
|
|
931 | feature_update_pass_2 (&f_v, v); |
|
|
932 | |
|
|
933 | len -= 3; |
|
|
934 | } |
|
|
935 | |
|
|
936 | feature_finish_pass_2 (&f_h); |
|
|
937 | feature_finish_pass_2 (&f_s); |
|
|
938 | feature_finish_pass_2 (&f_v); |
|
|
939 | } |
|
|
940 | |
|
|
941 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
942 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
943 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
944 | |
|
|
945 | av_push (result, histsv); |
|
|
946 | } |
|
|
947 | |
|
|
948 | RETVAL = newRV_noinc ((SV *)result); |
|
|
949 | } |
|
|
950 | OUTPUT: |
|
|
951 | RETVAL |
|
|
952 | |