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> |
5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
17 | #include <gdk-pixbuf/gdk-pixbuf.h> |
6 | |
18 | |
7 | #include <gperl.h> |
19 | #include <gperl.h> |
8 | #include <gtk2perl.h> |
20 | #include <gtk2perl.h> |
9 | |
21 | |
10 | #define IW 80 |
22 | #include <assert.h> |
11 | |
23 | |
12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
24 | #if WEBP |
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25 | #include <webp/demux.h> |
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26 | #include <webp/decode.h> |
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27 | #endif |
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28 | |
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29 | #if JXL |
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30 | #include <jxl/decode.h> |
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31 | #include "jxl/thread_parallel_runner.h" |
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32 | #endif |
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33 | |
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34 | #include "perlmulticore.h" |
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35 | |
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36 | #define IW 80 /* MUST match Schnauzer.pm! */ |
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37 | #define IH 60 /* MUST match Schnauzer.pm! */ |
13 | |
38 | |
14 | #define LINELENGTH 240 |
39 | #define LINELENGTH 240 |
15 | |
40 | |
16 | #define ELLIPSIS "\xe2\x80\xa6" |
41 | #define ELLIPSIS "\xe2\x80\xa6" |
17 | |
42 | |
18 | static guint32 a85_val; |
43 | typedef char *octet_string; |
19 | static guint a85_cnt; |
44 | |
20 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
45 | static magic_t magic_cookie[2]; /* !mime, mime */ |
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46 | |
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47 | struct jpg_err_mgr |
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48 | { |
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49 | struct jpeg_error_mgr err; |
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50 | jmp_buf setjmp_buffer; |
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51 | }; |
21 | |
52 | |
22 | static void |
53 | static void |
23 | a85_init (void) |
54 | cv_error_exit (j_common_ptr cinfo) |
24 | { |
55 | { |
25 | a85_cnt = 4; |
56 | cinfo->err->output_message (cinfo); |
26 | a85_ptr = a85_buf; |
57 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
27 | } |
58 | } |
28 | |
59 | |
29 | static void |
60 | static void |
30 | a85_push (PerlIO *fp, guchar c) |
61 | cv_error_output (j_common_ptr cinfo) |
31 | { |
62 | { |
32 | a85_val = a85_val << 8 | c; |
63 | char msg[JMSG_LENGTH_MAX]; |
33 | |
64 | |
34 | if (!--a85_cnt) |
65 | cinfo->err->format_message (cinfo, msg); |
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 | |
66 | |
45 | a85_ptr += 5; |
67 | fprintf (stderr, "JPEG decoding error: %s\n", msg); |
46 | } |
68 | return; |
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 | } |
69 | } |
72 | |
70 | |
73 | static void |
71 | static void |
74 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
72 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
75 | unsigned int *h, unsigned int *s, unsigned int *v) |
73 | unsigned int *h, unsigned int *s, unsigned int *v) |
… | |
… | |
95 | |
93 | |
96 | *h &= 255; |
94 | *h &= 255; |
97 | } |
95 | } |
98 | } |
96 | } |
99 | |
97 | |
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98 | struct feature { |
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99 | float v1, v2, v3; // mean, square, cube |
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100 | int n; |
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101 | }; |
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102 | |
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103 | static void |
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104 | feature_init (struct feature *f) |
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105 | { |
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106 | f->v1 = 0.; |
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107 | f->v2 = 0.; |
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108 | f->v3 = 0.; |
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109 | f->n = 0; |
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110 | } |
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111 | |
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112 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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113 | // elmex ist schuld. |
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114 | static void |
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115 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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116 | { |
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117 | f->v1 += v; |
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118 | f->n += 1; |
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119 | } |
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120 | |
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121 | static void |
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122 | feature_finish_pass_1 (struct feature *f) |
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123 | { |
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124 | if (f->n < 1) |
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125 | return; |
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126 | |
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127 | f->v1 /= f->n; |
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128 | } |
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129 | |
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130 | static void |
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131 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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132 | { |
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133 | float d = v - f->v1; |
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134 | |
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135 | f->v2 += d * d; |
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136 | f->v3 += d * d * d; |
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137 | } |
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138 | |
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139 | static void |
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140 | feature_finish_pass_2 (struct feature *f) |
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141 | { |
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142 | if (f->n < 1) |
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143 | return; |
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144 | |
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145 | f->v2 /= f->n; |
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146 | f->v3 /= f->n; |
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147 | |
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148 | f->v1 /= 255.; |
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149 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
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150 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
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151 | } |
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152 | |
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153 | static guint32 a85_val; |
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154 | static guint a85_cnt; |
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155 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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156 | |
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157 | static void |
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158 | a85_init (void) |
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159 | { |
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160 | a85_cnt = 4; |
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161 | a85_ptr = a85_buf; |
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162 | } |
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163 | |
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164 | static void |
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165 | a85_push (PerlIO *fp, guchar c) |
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166 | { |
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167 | a85_val = a85_val << 8 | c; |
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168 | |
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169 | if (!--a85_cnt) |
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170 | { |
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171 | a85_cnt = 4; |
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172 | if (a85_val) |
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173 | { |
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174 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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175 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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176 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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177 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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178 | a85_ptr[0] = (a85_val ) + 33; |
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179 | |
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180 | a85_ptr += 5; |
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181 | } |
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182 | else |
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183 | *a85_ptr++ = 'z'; |
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184 | |
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185 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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186 | { |
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187 | *a85_ptr++ = '\n'; |
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188 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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189 | a85_ptr = a85_buf; |
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190 | } |
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191 | } |
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192 | |
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193 | } |
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194 | |
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195 | static void |
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196 | a85_finish (PerlIO *fp) |
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197 | { |
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198 | while (a85_cnt != 4) |
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199 | a85_push (fp, 0); |
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200 | |
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201 | *a85_ptr++ = '~'; // probably buggy end-marker |
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202 | *a85_ptr++ = '>'; // probably buggy end-marker |
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203 | *a85_ptr++ = '\n'; |
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204 | |
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205 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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206 | } |
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207 | |
100 | ///////////////////////////////////////////////////////////////////////////// |
208 | ///////////////////////////////////////////////////////////////////////////// |
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209 | // memory source for libjpeg |
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210 | |
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211 | static void cv_ms_init (j_decompress_ptr cinfo) |
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212 | { |
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213 | } |
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214 | |
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215 | static void cv_ms_term (j_decompress_ptr cinfo) |
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216 | { |
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217 | } |
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218 | |
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219 | static boolean cv_ms_fill (j_decompress_ptr cinfo) |
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220 | { |
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221 | // unexpected EOF, warn and generate fake EOI marker |
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222 | |
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223 | WARNMS (cinfo, JWRN_JPEG_EOF); |
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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 | static const JOCTET eoi[] = { 0xFF, JPEG_EOI }; |
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228 | |
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229 | src->next_input_byte = eoi; |
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230 | src->bytes_in_buffer = sizeof (eoi); |
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231 | |
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232 | return TRUE; |
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233 | } |
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234 | |
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235 | static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes) |
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236 | { |
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237 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
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238 | |
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239 | src->next_input_byte += num_bytes; |
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240 | src->bytes_in_buffer -= num_bytes; |
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241 | } |
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242 | |
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243 | static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen) |
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244 | { |
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245 | struct jpeg_source_mgr *src; |
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246 | |
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247 | if (!cinfo->src) |
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248 | cinfo->src = (struct jpeg_source_mgr *) |
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249 | (*cinfo->mem->alloc_small) ( |
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250 | (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr) |
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251 | ); |
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252 | |
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253 | src = (struct jpeg_source_mgr *)cinfo->src; |
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254 | src->init_source = cv_ms_init; |
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255 | src->fill_input_buffer = cv_ms_fill; |
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256 | src->skip_input_data = cv_ms_skip; |
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257 | src->resync_to_restart = jpeg_resync_to_restart; |
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258 | src->term_source = cv_ms_term; |
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259 | src->next_input_byte = (JOCTET *)buf; |
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260 | src->bytes_in_buffer = buflen; |
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261 | } |
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262 | |
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263 | ///////////////////////////////////////////////////////////////////////////// |
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264 | |
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265 | /* great, the jpeg-xl reference implementaton requires us to parse bmff files */ |
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266 | |
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267 | struct bmff_box |
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268 | { |
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269 | char type[4]; |
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270 | const uint8_t *ptr; |
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271 | size_t size; |
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272 | }; |
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273 | |
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274 | static int |
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275 | bmff_parse_box (struct bmff_box *box, const uint8_t **next_in, size_t *avail_in) |
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276 | { |
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277 | if (*avail_in < 8) |
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278 | return 0; |
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279 | |
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280 | box->size = ((*next_in)[0] << 24) |
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281 | | ((*next_in)[1] << 16) |
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282 | | ((*next_in)[2] << 8) |
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283 | | ((*next_in)[3] ); |
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284 | |
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285 | if (box->size < 8) |
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286 | return 0; |
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287 | |
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288 | if (*avail_in < box->size) |
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289 | return 0; |
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290 | |
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291 | memcpy (box->type, *next_in + 4, 4); |
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292 | box->ptr = *next_in + 8; |
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293 | |
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294 | *next_in += box->size; |
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295 | *avail_in -= box->size; |
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296 | |
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297 | box->size -= 8; |
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298 | |
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299 | return 1; |
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300 | } |
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301 | |
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302 | ///////////////////////////////////////////////////////////////////////////// |
101 | |
303 | |
102 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
304 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
103 | |
305 | |
104 | PROTOTYPES: ENABLE |
306 | PROTOTYPES: ENABLE |
105 | |
307 | |
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308 | # calculate the common prefix length of two strings |
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309 | # missing function in perl. really :) |
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310 | int |
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311 | common_prefix_length (a, b) |
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312 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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313 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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314 | CODE: |
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315 | RETVAL = 0; |
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316 | |
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317 | while (*a == *b && *a) |
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318 | { |
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319 | RETVAL += (*a & 0xc0) != 0x80; |
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320 | a++, b++; |
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321 | } |
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322 | |
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323 | OUTPUT: |
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324 | RETVAL |
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325 | |
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326 | const char * |
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327 | magic (SV *path_or_data) |
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328 | ALIAS: |
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329 | magic = 0 |
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330 | magic_mime = 1 |
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331 | magic_buffer = 2 |
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332 | magic_buffer_mime = 3 |
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333 | CODE: |
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334 | { |
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335 | STRLEN len; |
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336 | char *data = SvPVbyte (path_or_data, len); |
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337 | |
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338 | if (!magic_cookie[0]) |
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339 | { |
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340 | magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
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341 | magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
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342 | magic_load (magic_cookie[0], 0); |
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343 | magic_load (magic_cookie[1], 0); |
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344 | } |
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345 | |
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346 | perlinterp_release (); |
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347 | |
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348 | RETVAL = ix & 2 |
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349 | ? magic_buffer (magic_cookie[ix & 1], data, len) |
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350 | : magic_file (magic_cookie[ix & 1], data); |
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351 | |
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352 | perlinterp_acquire (); |
|
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353 | } |
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354 | OUTPUT: |
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355 | RETVAL |
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356 | |
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357 | # missing/broken in Gtk2 perl module |
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358 | |
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359 | void |
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360 | gdk_window_clear_hints (GdkWindow *window) |
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361 | CODE: |
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362 | gdk_window_set_geometry_hints (window, 0, 0); |
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363 | |
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364 | gboolean |
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365 | gdk_net_wm_supports (GdkAtom property) |
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366 | CODE: |
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367 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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368 | RETVAL = gdk_net_wm_supports (property); |
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369 | #else |
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370 | RETVAL = 0; |
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371 | #endif |
|
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372 | OUTPUT: |
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373 | RETVAL |
|
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374 | |
106 | GdkPixbuf_noinc * |
375 | GdkPixbuf_noinc * |
107 | transpose (GdkPixbuf *pb) |
376 | dealpha_expose (GdkPixbuf *pb) |
108 | CODE: |
377 | CODE: |
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378 | perlinterp_release (); |
109 | { |
379 | { |
110 | int w = gdk_pixbuf_get_width (pb); |
380 | int w = gdk_pixbuf_get_width (pb); |
111 | int h = gdk_pixbuf_get_height (pb); |
381 | int h = gdk_pixbuf_get_height (pb); |
112 | int bpp = gdk_pixbuf_get_n_channels (pb); |
382 | int bpp = gdk_pixbuf_get_n_channels (pb); |
113 | int x, y, i; |
383 | int x, y, i; |
114 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
384 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
115 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
385 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
116 | |
386 | |
117 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
387 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
118 | |
388 | |
119 | dst = gdk_pixbuf_get_pixels (RETVAL); |
389 | dst = gdk_pixbuf_get_pixels (RETVAL); |
120 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
390 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
121 | |
391 | |
122 | for (y = 0; y < h; y++) |
|
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123 | for (x = 0; x < w; x++) |
392 | for (x = 0; x < w; x++) |
|
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393 | for (y = 0; y < h; y++) |
124 | for (i = 0; i < bpp; i++) |
394 | for (i = 0; i < 3; i++) |
125 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
395 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
126 | } |
396 | } |
|
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397 | perlinterp_acquire (); |
127 | OUTPUT: |
398 | OUTPUT: |
128 | RETVAL |
399 | RETVAL |
129 | |
400 | |
130 | GdkPixbuf_noinc * |
401 | GdkPixbuf_noinc * |
131 | flop (GdkPixbuf *pb) |
402 | rotate (GdkPixbuf *pb, int angle) |
132 | CODE: |
403 | CODE: |
133 | { |
404 | perlinterp_release (); |
134 | int w = gdk_pixbuf_get_width (pb); |
405 | if (angle < 0) |
135 | int h = gdk_pixbuf_get_height (pb); |
406 | angle += 360; |
136 | int bpp = gdk_pixbuf_get_n_channels (pb); |
407 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
137 | int x, y, i; |
408 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
138 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
409 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
139 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
410 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
140 | |
411 | : angle); |
141 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
412 | perlinterp_acquire (); |
142 | |
|
|
143 | dst = gdk_pixbuf_get_pixels (RETVAL); |
|
|
144 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
145 | |
|
|
146 | for (y = 0; y < h; y++) |
|
|
147 | for (x = 0; x < w; x++) |
|
|
148 | for (i = 0; i < bpp; i++) |
|
|
149 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
|
|
150 | } |
|
|
151 | OUTPUT: |
413 | OUTPUT: |
152 | RETVAL |
414 | RETVAL |
153 | |
415 | |
|
|
416 | const char * |
|
|
417 | filetype (SV *image_data) |
|
|
418 | CODE: |
|
|
419 | { |
|
|
420 | STRLEN data_len; |
|
|
421 | U8 *data = SvPVbyte (image_data, data_len); |
|
|
422 | static const unsigned char jxl_header[] = { |
|
|
423 | 0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a |
|
|
424 | }; |
|
|
425 | |
|
|
426 | if (data_len >= 20 |
|
|
427 | && data[0] == 0xff |
|
|
428 | && data[1] == 0xd8 |
|
|
429 | && data[2] == 0xff) |
|
|
430 | RETVAL = "image/jpeg"; |
|
|
431 | else if (data_len >= 12 |
|
|
432 | && data[ 0] == (U8)'R' |
|
|
433 | && data[ 1] == (U8)'I' |
|
|
434 | && data[ 2] == (U8)'F' |
|
|
435 | && data[ 3] == (U8)'F' |
|
|
436 | && data[ 8] == (U8)'W' |
|
|
437 | && data[ 9] == (U8)'E' |
|
|
438 | && data[10] == (U8)'B' |
|
|
439 | && data[11] == (U8)'P') |
|
|
440 | RETVAL = "image/webp"; |
|
|
441 | else if (data_len >= 16 |
|
|
442 | && data[ 0] == 0x89 |
|
|
443 | && data[ 1] == (U8)'P' |
|
|
444 | && data[ 2] == (U8)'N' |
|
|
445 | && data[ 3] == (U8)'G' |
|
|
446 | && data[ 4] == 0x0d |
|
|
447 | && data[ 5] == 0x0a |
|
|
448 | && data[ 6] == 0x1a |
|
|
449 | && data[ 7] == 0x0a) |
|
|
450 | RETVAL = "image/png"; |
|
|
451 | else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0) |
|
|
452 | RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck |
|
|
453 | else if (data_len >= 2 |
|
|
454 | && data[0] == 0xff |
|
|
455 | && data[1] == 0x0a) |
|
|
456 | RETVAL = "image/jxl"; |
|
|
457 | else if (data_len >= 13 |
|
|
458 | && data[0] == 'G' |
|
|
459 | && data[1] == 'I' |
|
|
460 | && data[2] == 'F' |
|
|
461 | && data[3] == '8' |
|
|
462 | //&& (data[4] == '7' || data[4] == '9') |
|
|
463 | && data[5] == 'a') |
|
|
464 | { |
|
|
465 | RETVAL = "image/gif"; |
|
|
466 | |
|
|
467 | // now see if its animated - we require the netscape application header for this |
|
|
468 | int ofs = 13; |
|
|
469 | |
|
|
470 | if (data[10] & 0x80) |
|
|
471 | ofs += (1 << ((data[10] & 7) + 1)) * 3; |
|
|
472 | |
|
|
473 | if (data_len >= ofs + 2 + 1 + 11) |
|
|
474 | { |
|
|
475 | |
|
|
476 | // skip a graphic control extension block. we assume |
|
|
477 | // there is at most one such block - while the NAB |
|
|
478 | // has to come firstz, some files do not obey this |
|
|
479 | if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9) |
|
|
480 | ofs += 3 + data[ofs + 2] + 1; |
|
|
481 | |
|
|
482 | if (data_len >= ofs + 2 + 1 + 11) |
|
|
483 | if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1)) |
|
|
484 | RETVAL = "video/gif"; |
|
|
485 | } |
|
|
486 | } |
|
|
487 | |
|
|
488 | else |
|
|
489 | XSRETURN_UNDEF; |
|
|
490 | } |
|
|
491 | OUTPUT: |
|
|
492 | RETVAL |
|
|
493 | |
|
|
494 | GdkPixbuf_noinc * |
|
|
495 | decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
496 | CODE: |
|
|
497 | { |
|
|
498 | #if WEBP |
|
|
499 | STRLEN data_size; |
|
|
500 | int alpha; |
|
|
501 | WebPData data; |
|
|
502 | WebPDemuxer *demux; |
|
|
503 | WebPIterator iter; |
|
|
504 | WebPDecoderConfig config; |
|
|
505 | int inw, inh; |
|
|
506 | |
|
|
507 | data.bytes = (uint8_t *)SvPVbyte (image_data, data_size); |
|
|
508 | data.size = data_size; |
|
|
509 | |
|
|
510 | perlinterp_release (); |
|
|
511 | |
|
|
512 | RETVAL = 0; |
|
|
513 | |
|
|
514 | if (!(demux = WebPDemux (&data))) |
|
|
515 | goto err_demux; |
|
|
516 | |
|
|
517 | if (!WebPDemuxGetFrame (demux, 1, &iter)) |
|
|
518 | goto err_iter; |
|
|
519 | |
|
|
520 | if (!WebPInitDecoderConfig (&config)) |
|
|
521 | goto err_iter; |
|
|
522 | |
|
|
523 | config.options.use_threads = 1; |
|
|
524 | |
|
|
525 | if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK) |
|
|
526 | goto err_iter; |
|
|
527 | |
|
|
528 | inw = config.input.width; |
|
|
529 | inh = config.input.height; |
|
|
530 | |
|
|
531 | if (thumbnail) |
|
|
532 | { |
|
|
533 | if (inw * ih > inh * iw) |
|
|
534 | ih = (iw * inh + inw - 1) / inw; |
|
|
535 | else |
|
|
536 | iw = (ih * inw + inh - 1) / inh; |
|
|
537 | |
|
|
538 | config.options.bypass_filtering = 1; |
|
|
539 | config.options.no_fancy_upsampling = 1; |
|
|
540 | |
|
|
541 | config.options.use_scaling = 1; |
|
|
542 | config.options.scaled_width = iw; |
|
|
543 | config.options.scaled_height = ih; |
|
|
544 | } |
|
|
545 | else |
|
|
546 | { |
|
|
547 | iw = inw; |
|
|
548 | ih = inh; |
|
|
549 | } |
|
|
550 | |
|
|
551 | alpha = !!config.input.has_alpha; |
|
|
552 | |
|
|
553 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih); |
|
|
554 | if (!RETVAL) |
|
|
555 | goto err_iter; |
|
|
556 | |
|
|
557 | config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; |
|
|
558 | config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); |
|
|
559 | config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
560 | config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); |
|
|
561 | config.output.is_external_memory = 1; |
|
|
562 | |
|
|
563 | if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK) |
|
|
564 | { |
|
|
565 | g_object_unref (RETVAL); |
|
|
566 | RETVAL = 0; |
|
|
567 | goto err_iter; |
|
|
568 | } |
|
|
569 | |
|
|
570 | err_iter: |
|
|
571 | WebPDemuxReleaseIterator (&iter); |
|
|
572 | err_demux: |
|
|
573 | WebPDemuxDelete (demux); |
|
|
574 | |
|
|
575 | perlinterp_acquire (); |
|
|
576 | #else |
|
|
577 | croak ("load_webp: webp not enabled at compile time"); |
|
|
578 | #endif |
|
|
579 | } |
|
|
580 | OUTPUT: |
|
|
581 | RETVAL |
|
|
582 | |
|
|
583 | GdkPixbuf_noinc * |
|
|
584 | decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
585 | CODE: |
|
|
586 | { |
|
|
587 | #if JXL |
|
|
588 | JxlDecoder *dec; |
|
|
589 | JxlBasicInfo info; |
|
|
590 | const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data); |
|
|
591 | size_t avail_in = SvCUR (image_data); |
|
|
592 | const char *error = 0; |
|
|
593 | JxlDecoderStatus status; |
|
|
594 | void *runner = 0; |
|
|
595 | struct bmff_box box; |
|
|
596 | |
|
|
597 | RETVAL = 0; |
|
|
598 | |
|
|
599 | perlinterp_release (); |
|
|
600 | |
|
|
601 | dec = JxlDecoderCreate (0); |
|
|
602 | |
|
|
603 | error = "JxlDecoderCreate failed"; |
|
|
604 | if (!dec) |
|
|
605 | goto done; |
|
|
606 | |
|
|
607 | runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ()); |
|
|
608 | |
|
|
609 | status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner); |
|
|
610 | error = "JxlDecoderSetParallelRunner failed"; |
|
|
611 | if (status != JXL_DEC_SUCCESS) |
|
|
612 | goto done; |
|
|
613 | |
|
|
614 | error = "JxlDecoderSubscribeEvents failed"; |
|
|
615 | status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE); |
|
|
616 | if (status != JXL_DEC_SUCCESS) |
|
|
617 | goto done; |
|
|
618 | |
|
|
619 | status = JxlDecoderSetInput (dec, next_in, avail_in); |
|
|
620 | error = "JxlDecoderSetInput failed"; |
|
|
621 | if (status != JXL_DEC_SUCCESS) |
|
|
622 | goto done; |
|
|
623 | |
|
|
624 | for (;;) |
|
|
625 | { |
|
|
626 | status = JxlDecoderProcessInput (dec); |
|
|
627 | |
|
|
628 | switch (status) |
|
|
629 | { |
|
|
630 | case JXL_DEC_FULL_IMAGE: |
|
|
631 | error = 0; |
|
|
632 | goto done; |
|
|
633 | |
|
|
634 | case JXL_DEC_ERROR: |
|
|
635 | error = "JxlDecoderProcessInput failed"; |
|
|
636 | goto done; |
|
|
637 | |
|
|
638 | case JXL_DEC_NEED_MORE_INPUT: |
|
|
639 | error = "incomplete file"; |
|
|
640 | goto done; |
|
|
641 | |
|
|
642 | case JXL_DEC_SUCCESS: |
|
|
643 | error = "incomplete decode"; |
|
|
644 | goto done; |
|
|
645 | |
|
|
646 | case JXL_DEC_BASIC_INFO: |
|
|
647 | { |
|
|
648 | status = JxlDecoderGetBasicInfo (dec, &info); |
|
|
649 | error = "JxlDecoderGetBasicInfo failed"; |
|
|
650 | if (status != JXL_DEC_SUCCESS) |
|
|
651 | goto done; |
|
|
652 | |
|
|
653 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize); |
|
|
654 | error = "unable to allocate pixbuf"; |
|
|
655 | if (!RETVAL) |
|
|
656 | goto done; |
|
|
657 | |
|
|
658 | JxlPixelFormat format = { |
|
|
659 | info.alpha_bits ? 4 : 3, |
|
|
660 | JXL_TYPE_UINT8, |
|
|
661 | JXL_NATIVE_ENDIAN, |
|
|
662 | gdk_pixbuf_get_rowstride (RETVAL) |
|
|
663 | }; |
|
|
664 | |
|
|
665 | // cannot use gdk_pixbuf_get_byte_length because that does |
|
|
666 | // not return the size of the buffer, but the size of the buffer without |
|
|
667 | // the last padding bytes. the internal buffer is rowstride * ysize, |
|
|
668 | // and this is what the jxl decoder needs. none of this is documented |
|
|
669 | // in either library, of course. |
|
|
670 | |
|
|
671 | status = JxlDecoderSetImageOutBuffer ( |
|
|
672 | dec, |
|
|
673 | &format, |
|
|
674 | gdk_pixbuf_get_pixels (RETVAL), |
|
|
675 | gdk_pixbuf_get_rowstride (RETVAL) * info.ysize |
|
|
676 | ); |
|
|
677 | error = "JxlDecoderSetImageOutBuffer failed"; |
|
|
678 | if (status != JXL_DEC_SUCCESS) |
|
|
679 | goto done; |
|
|
680 | } |
|
|
681 | break; |
|
|
682 | |
|
|
683 | default: |
|
|
684 | error = "unexpected event"; |
|
|
685 | goto done; |
|
|
686 | } |
|
|
687 | } |
|
|
688 | |
|
|
689 | done: |
|
|
690 | if (dec) |
|
|
691 | JxlDecoderDestroy (dec); |
|
|
692 | |
|
|
693 | if (runner) |
|
|
694 | JxlThreadParallelRunnerDestroy (runner); |
|
|
695 | |
|
|
696 | perlinterp_acquire (); |
|
|
697 | |
|
|
698 | if (error) |
|
|
699 | { |
|
|
700 | if (RETVAL) |
|
|
701 | g_object_unref (RETVAL); |
|
|
702 | |
|
|
703 | croak ("load_jxl: %s (status %d)", error, status); |
|
|
704 | } |
|
|
705 | #else |
|
|
706 | croak ("load_jxl: jpeg-xl not enabled at compile time"); |
|
|
707 | #endif |
|
|
708 | } |
|
|
709 | OUTPUT: |
|
|
710 | RETVAL |
|
|
711 | |
|
|
712 | GdkPixbuf_noinc * |
|
|
713 | decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
714 | CODE: |
|
|
715 | { |
|
|
716 | struct jpeg_decompress_struct cinfo; |
|
|
717 | struct jpg_err_mgr jerr; |
|
|
718 | int rs; |
|
|
719 | volatile GdkPixbuf *pb = 0; |
|
|
720 | STRLEN data_len; |
|
|
721 | guchar *data = SvPVbyte (image_data, data_len); |
|
|
722 | |
|
|
723 | RETVAL = 0; |
|
|
724 | |
|
|
725 | perlinterp_release (); |
|
|
726 | |
|
|
727 | cinfo.err = jpeg_std_error (&jerr.err); |
|
|
728 | |
|
|
729 | jerr.err.error_exit = cv_error_exit; |
|
|
730 | jerr.err.output_message = cv_error_output; |
|
|
731 | |
|
|
732 | if ((rs = setjmp (jerr.setjmp_buffer))) |
|
|
733 | { |
|
|
734 | jpeg_destroy_decompress (&cinfo); |
|
|
735 | |
|
|
736 | if (pb) |
|
|
737 | g_object_unref ((gpointer)pb); |
|
|
738 | |
|
|
739 | perlinterp_acquire (); |
|
|
740 | XSRETURN_UNDEF; |
|
|
741 | } |
|
|
742 | |
|
|
743 | if (!data_len) |
|
|
744 | longjmp (jerr.setjmp_buffer, 4); |
|
|
745 | |
|
|
746 | jpeg_create_decompress (&cinfo); |
|
|
747 | cv_jpeg_mem_src (&cinfo, data, data_len); |
|
|
748 | |
|
|
749 | jpeg_read_header (&cinfo, TRUE); |
|
|
750 | |
|
|
751 | cinfo.dct_method = JDCT_DEFAULT; |
|
|
752 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
|
|
753 | cinfo.do_block_smoothing = FALSE; |
|
|
754 | cinfo.out_color_space = JCS_RGB; |
|
|
755 | cinfo.quantize_colors = FALSE; |
|
|
756 | |
|
|
757 | cinfo.scale_num = 1; |
|
|
758 | cinfo.scale_denom = 1; |
|
|
759 | |
|
|
760 | jpeg_calc_output_dimensions (&cinfo); |
|
|
761 | |
|
|
762 | if (thumbnail) |
|
|
763 | { |
|
|
764 | cinfo.dct_method = JDCT_FASTEST; |
|
|
765 | cinfo.do_fancy_upsampling = FALSE; |
|
|
766 | |
|
|
767 | while (cinfo.scale_denom < 8 |
|
|
768 | && cinfo.output_width >= iw*4 |
|
|
769 | && cinfo.output_height >= ih*4) |
|
|
770 | { |
|
|
771 | cinfo.scale_denom <<= 1; |
|
|
772 | jpeg_calc_output_dimensions (&cinfo); |
|
|
773 | } |
|
|
774 | } |
|
|
775 | |
|
|
776 | if (cinfo.output_components != 3) |
|
|
777 | longjmp (jerr.setjmp_buffer, 3); |
|
|
778 | |
|
|
779 | if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) |
|
|
780 | { |
|
|
781 | cinfo.out_color_space = JCS_CMYK; |
|
|
782 | cinfo.output_components = 4; |
|
|
783 | } |
|
|
784 | |
|
|
785 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
|
|
786 | if (!RETVAL) |
|
|
787 | longjmp (jerr.setjmp_buffer, 2); |
|
|
788 | |
|
|
789 | data = gdk_pixbuf_get_pixels (RETVAL); |
|
|
790 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
791 | |
|
|
792 | jpeg_start_decompress (&cinfo); |
|
|
793 | |
|
|
794 | while (cinfo.output_scanline < cinfo.output_height) |
|
|
795 | { |
|
|
796 | int remaining = cinfo.output_height - cinfo.output_scanline; |
|
|
797 | JSAMPROW rp[4]; |
|
|
798 | |
|
|
799 | rp [0] = data + cinfo.output_scanline * rs; |
|
|
800 | rp [1] = (guchar *)rp [0] + rs; |
|
|
801 | rp [2] = (guchar *)rp [1] + rs; |
|
|
802 | rp [3] = (guchar *)rp [2] + rs; |
|
|
803 | |
|
|
804 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
|
|
805 | } |
|
|
806 | |
|
|
807 | if (cinfo.out_color_space == JCS_CMYK) |
|
|
808 | { |
|
|
809 | guchar *end = data + cinfo.output_height * rs; |
|
|
810 | |
|
|
811 | while (data < end) |
|
|
812 | { |
|
|
813 | U32 c = data [0]; |
|
|
814 | U32 m = data [1]; |
|
|
815 | U32 y = data [2]; |
|
|
816 | U32 k = data [3]; |
|
|
817 | |
|
|
818 | if (0) |
|
|
819 | if (cinfo.Adobe_transform == 2) |
|
|
820 | { |
|
|
821 | c ^= 0xff; |
|
|
822 | m ^= 0xff; |
|
|
823 | y ^= 0xff; |
|
|
824 | k ^= 0xff; |
|
|
825 | } |
|
|
826 | |
|
|
827 | data [0] = (c * k + 0x80) / 0xff; |
|
|
828 | data [1] = (m * k + 0x80) / 0xff; |
|
|
829 | data [2] = (y * k + 0x80) / 0xff; |
|
|
830 | data [3] = 0xff; |
|
|
831 | |
|
|
832 | data += 4; |
|
|
833 | } |
|
|
834 | } |
|
|
835 | |
|
|
836 | jpeg_finish_decompress (&cinfo); |
|
|
837 | jpeg_destroy_decompress (&cinfo); |
|
|
838 | perlinterp_acquire (); |
|
|
839 | } |
|
|
840 | OUTPUT: |
|
|
841 | RETVAL |
|
|
842 | |
|
|
843 | void |
|
|
844 | compare (GdkPixbuf *a, GdkPixbuf *b) |
|
|
845 | PPCODE: |
|
|
846 | perlinterp_release (); |
|
|
847 | { |
|
|
848 | int w = gdk_pixbuf_get_width (a); |
|
|
849 | int h = gdk_pixbuf_get_height (a); |
|
|
850 | |
|
|
851 | int sa = gdk_pixbuf_get_rowstride (a); |
|
|
852 | int sb = gdk_pixbuf_get_rowstride (b); |
|
|
853 | |
|
|
854 | guchar *pa = gdk_pixbuf_get_pixels (a); |
|
|
855 | guchar *pb = gdk_pixbuf_get_pixels (b); |
|
|
856 | |
|
|
857 | int x, y; |
|
|
858 | |
|
|
859 | assert (w == gdk_pixbuf_get_width (b)); |
|
|
860 | assert (h == gdk_pixbuf_get_height (b)); |
|
|
861 | |
|
|
862 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
|
|
863 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
|
|
864 | |
|
|
865 | double diff = 0.; |
|
|
866 | int peak = 0; |
|
|
867 | |
|
|
868 | if (w && h) |
|
|
869 | for (y = 0; y < h; y++) |
|
|
870 | { |
|
|
871 | guchar *pa_ = pa + y * sa; |
|
|
872 | guchar *pb_ = pb + y * sb; |
|
|
873 | |
|
|
874 | for (x = 0; x < w; x++) |
|
|
875 | { |
|
|
876 | int d; |
|
|
877 | |
|
|
878 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
879 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
880 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
881 | } |
|
|
882 | } |
|
|
883 | |
|
|
884 | perlinterp_acquire (); |
|
|
885 | |
|
|
886 | EXTEND (SP, 2); |
|
|
887 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
888 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
|
|
889 | } |
|
|
890 | |
154 | ############################################################################# |
891 | ############################################################################# |
155 | |
892 | |
156 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
893 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
157 | |
894 | |
|
|
895 | # currently only works for filenames (octet strings) |
|
|
896 | |
|
|
897 | SV * |
|
|
898 | foldcase (SV *pathsv) |
|
|
899 | PROTOTYPE: $ |
|
|
900 | CODE: |
|
|
901 | { |
|
|
902 | STRLEN plen; |
|
|
903 | U8 *path = (U8 *)SvPV (pathsv, plen); |
|
|
904 | U8 *pend = path + plen; |
|
|
905 | U8 dst [plen * 8 * 3], *dstp = dst; |
|
|
906 | |
|
|
907 | while (path < pend) |
|
|
908 | { |
|
|
909 | U8 ch = *path; |
|
|
910 | |
|
|
911 | if (ch >= 'a' && ch <= 'z') |
|
|
912 | *dstp++ = *path++; |
|
|
913 | else if (ch >= 'A' && ch <= 'Z') |
|
|
914 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
915 | else if (ch >= '0' && ch <= '9') |
|
|
916 | { |
|
|
917 | /* version sort, up to 8 digits */ |
|
|
918 | STRLEN el, nl = 0; |
|
|
919 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
920 | path++, nl++; |
|
|
921 | |
|
|
922 | for (el = nl; el < 8; el++) |
|
|
923 | *dstp++ = '0'; |
|
|
924 | |
|
|
925 | memcpy (dstp, path - nl, nl); |
|
|
926 | dstp += nl; |
|
|
927 | } |
|
|
928 | else |
|
|
929 | *dstp++ = *path++; |
|
|
930 | #if 0 |
|
|
931 | else |
|
|
932 | { |
|
|
933 | STRLEN cl; |
|
|
934 | to_utf8_fold (path, dstp, &cl); |
|
|
935 | dstp += cl; |
|
|
936 | path += is_utf8_char (path); |
|
|
937 | } |
|
|
938 | #endif |
|
|
939 | } |
|
|
940 | |
|
|
941 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
942 | } |
|
|
943 | OUTPUT: |
|
|
944 | RETVAL |
|
|
945 | |
158 | GdkPixbuf_noinc * |
946 | GdkPixbuf_noinc * |
159 | p7_to_pb (int w, int h, guchar *src) |
947 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
948 | PROTOTYPE: @ |
160 | CODE: |
949 | CODE: |
161 | { |
950 | { |
162 | int x, y; |
951 | int x, y; |
163 | guchar *dst, *d; |
952 | guchar *dst, *d; |
164 | int dstr; |
953 | int dstr; |
|
|
954 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
165 | |
955 | |
166 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
956 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
167 | dst = gdk_pixbuf_get_pixels (RETVAL); |
957 | dst = gdk_pixbuf_get_pixels (RETVAL); |
168 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
958 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
169 | |
959 | |
… | |
… | |
178 | } |
968 | } |
179 | } |
969 | } |
180 | OUTPUT: |
970 | OUTPUT: |
181 | RETVAL |
971 | RETVAL |
182 | |
972 | |
|
|
973 | ############################################################################# |
|
|
974 | |
|
|
975 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
976 | |
|
|
977 | void |
|
|
978 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
979 | CODE: |
|
|
980 | { |
|
|
981 | int w = gdk_pixbuf_get_width (pb); |
|
|
982 | int h = gdk_pixbuf_get_height (pb); |
|
|
983 | int x, y, i; |
|
|
984 | guchar *dst; |
|
|
985 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
986 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
987 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
988 | |
|
|
989 | a85_init (); |
|
|
990 | |
|
|
991 | for (y = 0; y < h; y++) |
|
|
992 | for (x = 0; x < w; x++) |
|
|
993 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
994 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
995 | |
|
|
996 | a85_finish (fp); |
|
|
997 | } |
|
|
998 | |
|
|
999 | void |
|
|
1000 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
1001 | CODE: |
|
|
1002 | { |
|
|
1003 | int w = gdk_pixbuf_get_width (pb); |
|
|
1004 | int h = gdk_pixbuf_get_height (pb); |
|
|
1005 | int x, y, i; |
|
|
1006 | guchar *dst; |
|
|
1007 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
1008 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
1009 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
1010 | |
|
|
1011 | for (y = 0; y < h; y++) |
|
|
1012 | for (x = 0; x < w; x++) |
|
|
1013 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
1014 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
1015 | } |
|
|
1016 | |
|
|
1017 | ############################################################################# |
|
|
1018 | |
|
|
1019 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
1020 | |
183 | SV * |
1021 | SV * |
184 | pb_to_p7 (GdkPixbuf *pb) |
1022 | pb_to_hv84 (GdkPixbuf *pb) |
185 | CODE: |
1023 | CODE: |
186 | { |
1024 | { |
187 | int w = gdk_pixbuf_get_width (pb); |
1025 | int w = gdk_pixbuf_get_width (pb); |
188 | int h = gdk_pixbuf_get_height (pb); |
1026 | int h = gdk_pixbuf_get_height (pb); |
189 | int x, y; |
1027 | int x, y; |
190 | guchar *dst; |
1028 | guchar *dst; |
191 | int bpp = gdk_pixbuf_get_n_channels (pb); |
1029 | int bpp = gdk_pixbuf_get_n_channels (pb); |
192 | guchar *src = gdk_pixbuf_get_pixels (pb); |
1030 | guchar *src = gdk_pixbuf_get_pixels (pb); |
193 | int sstr = gdk_pixbuf_get_rowstride (pb); |
1031 | int sstr = gdk_pixbuf_get_rowstride (pb); |
194 | int Er[IW], Eg[IW], Eb[IW]; |
|
|
195 | int seed = 77; |
|
|
196 | |
|
|
197 | RETVAL = newSV (w * h); |
|
|
198 | SvPOK_only (RETVAL); |
|
|
199 | SvCUR_set (RETVAL, w * h); |
|
|
200 | |
|
|
201 | dst = SvPVX (RETVAL); |
|
|
202 | |
|
|
203 | memset (Er, 0, sizeof (int) * IW); |
|
|
204 | memset (Eg, 0, sizeof (int) * IW); |
|
|
205 | memset (Eb, 0, sizeof (int) * IW); |
|
|
206 | |
|
|
207 | /* some primitive error distribution + random dithering */ |
|
|
208 | |
|
|
209 | for (y = 0; y < h; y++) |
|
|
210 | { |
|
|
211 | int er = 0, eg = 0, eb = 0; |
|
|
212 | |
|
|
213 | for (x = 0; x < w; x++) |
|
|
214 | { |
|
|
215 | int r, g, b; |
|
|
216 | guchar *p = src + x * bpp + y * sstr; |
|
|
217 | |
|
|
218 | r = ((p[0] + er + Er[x]) * 7 + 128) / 255; |
|
|
219 | g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; |
|
|
220 | b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; |
|
|
221 | |
|
|
222 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
|
|
223 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
224 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
225 | |
|
|
226 | er += p[0] - (r * 255 + 4) / 7; |
|
|
227 | eg += p[1] - (g * 255 + 4) / 7; |
|
|
228 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
229 | |
|
|
230 | Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3; |
|
|
231 | Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3; |
|
|
232 | Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3; |
|
|
233 | |
|
|
234 | *dst++ = r << 5 | g << 2 | b; |
|
|
235 | } |
|
|
236 | } |
|
|
237 | } |
|
|
238 | OUTPUT: |
|
|
239 | RETVAL |
|
|
240 | |
|
|
241 | SV * |
|
|
242 | make_histogram (SV *ar) |
|
|
243 | CODE: |
|
|
244 | { |
|
|
245 | int i; |
|
|
246 | AV *av, *result; |
|
|
247 | |
|
|
248 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
249 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
250 | |
|
|
251 | av = (AV *) SvRV (ar); |
|
|
252 | result = newAV (); |
|
|
253 | |
|
|
254 | for (i = 0; i <= av_len (av); ++i) |
|
|
255 | { |
|
|
256 | const int HISTSIZE = 64; |
|
|
257 | |
|
|
258 | int j; |
|
|
259 | SV *sv = *av_fetch (av, i, 1); |
|
|
260 | STRLEN len; |
|
|
261 | char *buf = SvPVbyte (sv, len); |
|
|
262 | |
|
|
263 | int tmphist[HISTSIZE]; |
|
|
264 | float *hist; |
|
|
265 | |
|
|
266 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
267 | SvPOK_on (histsv); |
|
|
268 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
269 | hist = (float *)SvPVX (histsv); |
|
|
270 | |
|
|
271 | Zero (tmphist, sizeof (tmphist), char); |
|
|
272 | |
|
|
273 | for (j = len; j--; ) |
|
|
274 | { |
|
|
275 | unsigned int idx |
|
|
276 | = ((*buf & 0xc0) >> 2) |
|
|
277 | | ((*buf & 0x18) >> 1) |
|
|
278 | | (*buf & 0x03); |
|
|
279 | |
|
|
280 | ++tmphist[idx]; |
|
|
281 | ++buf; |
|
|
282 | } |
|
|
283 | |
|
|
284 | for (j = 0; j < HISTSIZE; ++j) |
|
|
285 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
286 | |
|
|
287 | av_push (result, histsv); |
|
|
288 | } |
|
|
289 | |
|
|
290 | RETVAL = newRV_noinc ((SV *)result); |
|
|
291 | } |
|
|
292 | OUTPUT: |
|
|
293 | RETVAL |
|
|
294 | |
|
|
295 | |
|
|
296 | |
|
|
297 | ############################################################################# |
|
|
298 | |
|
|
299 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
300 | |
|
|
301 | void |
|
|
302 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
303 | CODE: |
|
|
304 | { |
|
|
305 | int w = gdk_pixbuf_get_width (pb); |
|
|
306 | int h = gdk_pixbuf_get_height (pb); |
|
|
307 | int x, y, i; |
|
|
308 | guchar *dst; |
|
|
309 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
310 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
311 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
312 | |
|
|
313 | a85_init (); |
|
|
314 | |
|
|
315 | for (y = 0; y < h; y++) |
|
|
316 | for (x = 0; x < w; x++) |
|
|
317 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
318 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
319 | |
|
|
320 | a85_finish (fp); |
|
|
321 | } |
|
|
322 | |
|
|
323 | void |
|
|
324 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
325 | CODE: |
|
|
326 | { |
|
|
327 | int w = gdk_pixbuf_get_width (pb); |
|
|
328 | int h = gdk_pixbuf_get_height (pb); |
|
|
329 | int x, y, i; |
|
|
330 | guchar *dst; |
|
|
331 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
332 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
333 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
334 | |
|
|
335 | for (y = 0; y < h; y++) |
|
|
336 | for (x = 0; x < w; x++) |
|
|
337 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
338 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
339 | } |
|
|
340 | |
|
|
341 | ############################################################################# |
|
|
342 | |
|
|
343 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
344 | |
|
|
345 | SV * |
|
|
346 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
347 | CODE: |
|
|
348 | { |
|
|
349 | int w = gdk_pixbuf_get_width (pb); |
|
|
350 | int h = gdk_pixbuf_get_height (pb); |
|
|
351 | int x, y; |
|
|
352 | guchar *dst; |
|
|
353 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
354 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
355 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
356 | |
1032 | |
357 | RETVAL = newSV (6 * 8 * 12 / 8); |
1033 | RETVAL = newSV (6 * 8 * 12 / 8); |
358 | SvPOK_only (RETVAL); |
1034 | SvPOK_only (RETVAL); |
359 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
1035 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
360 | |
1036 | |
361 | dst = SvPVX (RETVAL); |
1037 | dst = (guchar *)SvPVX (RETVAL); |
362 | |
1038 | |
363 | /* some primitive error distribution + random dithering */ |
1039 | /* some primitive error distribution + random dithering */ |
364 | |
1040 | |
365 | for (y = 0; y < h; y++) |
1041 | for (y = 0; y < h; y++) |
366 | { |
1042 | { |
… | |
… | |
424 | } |
1100 | } |
425 | } |
1101 | } |
426 | OUTPUT: |
1102 | OUTPUT: |
427 | RETVAL |
1103 | RETVAL |
428 | |
1104 | |
|
|
1105 | ############################################################################# |
429 | |
1106 | |
|
|
1107 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
430 | |
1108 | |
|
|
1109 | SV * |
|
|
1110 | extract_features (SV *ar) |
|
|
1111 | CODE: |
|
|
1112 | { |
|
|
1113 | int i; |
|
|
1114 | AV *av, *result; |
|
|
1115 | |
|
|
1116 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
1117 | croak ("Not an array ref as first argument to extract_features"); |
|
|
1118 | |
|
|
1119 | av = (AV *) SvRV (ar); |
|
|
1120 | result = newAV (); |
|
|
1121 | |
|
|
1122 | for (i = 0; i <= av_len (av); ++i) |
|
|
1123 | { |
|
|
1124 | SV *sv = *av_fetch (av, i, 1); |
|
|
1125 | SV *histsv = newSV (9 * sizeof (float) + 1); |
|
|
1126 | |
|
|
1127 | SvPOK_on (histsv); |
|
|
1128 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
1129 | float *hist = (float *)SvPVX (histsv); |
|
|
1130 | |
|
|
1131 | struct feature f_h, f_s, f_v; |
|
|
1132 | feature_init (&f_h); |
|
|
1133 | feature_init (&f_s); |
|
|
1134 | feature_init (&f_v); |
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|
1135 | |
|
|
1136 | { |
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|
1137 | STRLEN len; |
|
|
1138 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
1139 | while (len >= 3) |
|
|
1140 | { |
|
|
1141 | unsigned int r, g, b, h, s, v; |
|
|
1142 | r = *buf++; g = *buf++; b = *buf++; |
|
|
1143 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
1144 | |
|
|
1145 | feature_update_pass_1 (&f_h, h); |
|
|
1146 | feature_update_pass_1 (&f_s, s); |
|
|
1147 | feature_update_pass_1 (&f_v, v); |
|
|
1148 | |
|
|
1149 | len -= 3; |
|
|
1150 | } |
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|
1151 | |
|
|
1152 | feature_finish_pass_1 (&f_h); |
|
|
1153 | feature_finish_pass_1 (&f_s); |
|
|
1154 | feature_finish_pass_1 (&f_v); |
|
|
1155 | } |
|
|
1156 | |
|
|
1157 | { |
|
|
1158 | STRLEN len; |
|
|
1159 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
1160 | while (len >= 3) |
|
|
1161 | { |
|
|
1162 | unsigned int r, g, b, h, s, v; |
|
|
1163 | r = *buf++; g = *buf++; b = *buf++; |
|
|
1164 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
1165 | |
|
|
1166 | feature_update_pass_2 (&f_h, h); |
|
|
1167 | feature_update_pass_2 (&f_s, s); |
|
|
1168 | feature_update_pass_2 (&f_v, v); |
|
|
1169 | |
|
|
1170 | len -= 3; |
|
|
1171 | } |
|
|
1172 | |
|
|
1173 | feature_finish_pass_2 (&f_h); |
|
|
1174 | feature_finish_pass_2 (&f_s); |
|
|
1175 | feature_finish_pass_2 (&f_v); |
|
|
1176 | } |
|
|
1177 | |
|
|
1178 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
1179 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
1180 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
1181 | |
|
|
1182 | av_push (result, histsv); |
|
|
1183 | } |
|
|
1184 | |
|
|
1185 | RETVAL = newRV_noinc ((SV *)result); |
|
|
1186 | } |
|
|
1187 | OUTPUT: |
|
|
1188 | RETVAL |
|
|
1189 | |