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! */ |
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38 | |
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39 | #define LINELENGTH 240 |
13 | |
40 | |
14 | #define ELLIPSIS "\xe2\x80\xa6" |
41 | #define ELLIPSIS "\xe2\x80\xa6" |
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42 | |
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43 | typedef char *octet_string; |
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44 | |
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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 | }; |
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52 | |
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53 | static void |
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54 | cv_error_exit (j_common_ptr cinfo) |
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55 | { |
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56 | cinfo->err->output_message (cinfo); |
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57 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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58 | } |
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59 | |
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60 | static void |
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61 | cv_error_output (j_common_ptr cinfo) |
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62 | { |
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63 | char msg[JMSG_LENGTH_MAX]; |
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64 | |
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65 | cinfo->err->format_message (cinfo, msg); |
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66 | |
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67 | fprintf (stderr, "JPEG decoding error: %s\n", msg); |
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68 | return; |
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69 | } |
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70 | |
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71 | static void |
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72 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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73 | unsigned int *h, unsigned int *s, unsigned int *v) |
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74 | { |
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75 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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76 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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77 | unsigned int delta = mx - mn; |
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78 | |
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79 | *v = mx; |
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80 | |
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81 | *s = mx ? delta * 255 / mx : 0; |
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82 | |
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83 | if (delta == 0) |
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84 | *h = 0; |
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85 | else |
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86 | { |
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87 | if (r == mx) |
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88 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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89 | else if (g == mx) |
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90 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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91 | else if (b == mx) |
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92 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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93 | |
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94 | *h &= 255; |
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95 | } |
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96 | } |
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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 | } |
15 | |
152 | |
16 | static guint32 a85_val; |
153 | static guint32 a85_val; |
17 | static guint a85_cnt; |
154 | static guint a85_cnt; |
18 | static guchar a85_buf[80], *a85_ptr; |
155 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
19 | |
156 | |
20 | static void |
157 | static void |
21 | a85_init (void) |
158 | a85_init (void) |
22 | { |
159 | { |
23 | a85_cnt = 4; |
160 | a85_cnt = 4; |
… | |
… | |
32 | if (!--a85_cnt) |
169 | if (!--a85_cnt) |
33 | { |
170 | { |
34 | a85_cnt = 4; |
171 | a85_cnt = 4; |
35 | if (a85_val) |
172 | if (a85_val) |
36 | { |
173 | { |
37 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
174 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
38 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
175 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
39 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
176 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
40 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
177 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
41 | a85_ptr[0] = (a85_val ) + 33; |
178 | a85_ptr[0] = (a85_val ) + 33; |
42 | |
179 | |
43 | a85_ptr += 5; |
180 | a85_ptr += 5; |
44 | } |
181 | } |
… | |
… | |
53 | } |
190 | } |
54 | } |
191 | } |
55 | |
192 | |
56 | } |
193 | } |
57 | |
194 | |
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195 | static void |
58 | a85_finish (PerlIO *fp) |
196 | a85_finish (PerlIO *fp) |
59 | { |
197 | { |
60 | while (a85_cnt != 4) |
198 | while (a85_cnt != 4) |
61 | a85_push (fp, 0); |
199 | a85_push (fp, 0); |
62 | |
200 | |
… | |
… | |
66 | |
204 | |
67 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
205 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
68 | } |
206 | } |
69 | |
207 | |
70 | ///////////////////////////////////////////////////////////////////////////// |
208 | ///////////////////////////////////////////////////////////////////////////// |
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209 | // memory source for libjpeg |
71 | |
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 | ///////////////////////////////////////////////////////////////////////////// |
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303 | |
72 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
304 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
73 | |
305 | |
74 | PROTOTYPES: ENABLE |
306 | PROTOTYPES: ENABLE |
75 | |
307 | |
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308 | void |
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309 | _exit (int code) |
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310 | |
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311 | # calculate the common prefix length of two strings |
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312 | # missing function in perl. really :) |
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313 | int |
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314 | common_prefix_length (a, b) |
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315 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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316 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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317 | CODE: |
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318 | RETVAL = 0; |
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319 | |
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320 | while (*a == *b && *a) |
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321 | { |
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322 | RETVAL += (*a & 0xc0) != 0x80; |
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323 | a++, b++; |
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324 | } |
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325 | |
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326 | OUTPUT: |
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327 | RETVAL |
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328 | |
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329 | const char * |
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330 | magic (SV *path_or_data) |
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331 | ALIAS: |
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332 | magic = 0 |
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333 | magic_mime = 1 |
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334 | magic_buffer = 2 |
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335 | magic_buffer_mime = 3 |
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336 | CODE: |
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337 | { |
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338 | STRLEN len; |
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339 | char *data = SvPVbyte (path_or_data, len); |
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340 | |
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341 | if (!magic_cookie[0]) |
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342 | { |
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343 | magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
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344 | magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
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345 | magic_load (magic_cookie[0], 0); |
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346 | magic_load (magic_cookie[1], 0); |
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347 | } |
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348 | |
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349 | perlinterp_release (); |
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350 | |
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351 | RETVAL = ix & 2 |
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352 | ? magic_buffer (magic_cookie[ix & 1], data, len) |
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353 | : magic_file (magic_cookie[ix & 1], data); |
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354 | |
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355 | perlinterp_acquire (); |
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356 | } |
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357 | OUTPUT: |
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358 | RETVAL |
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359 | |
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360 | # missing/broken in Gtk2 perl module |
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361 | |
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362 | void |
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363 | gdk_window_clear_hints (GdkWindow *window) |
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364 | CODE: |
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365 | gdk_window_set_geometry_hints (window, 0, 0); |
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366 | |
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367 | gboolean |
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368 | gdk_net_wm_supports (GdkAtom property) |
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369 | CODE: |
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370 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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371 | RETVAL = gdk_net_wm_supports (property); |
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372 | #else |
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373 | RETVAL = 0; |
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374 | #endif |
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375 | OUTPUT: |
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376 | RETVAL |
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377 | |
76 | GdkPixbuf_noinc * |
378 | GdkPixbuf_noinc * |
77 | transpose (GdkPixbuf *pb) |
379 | dealpha_expose (GdkPixbuf *pb) |
78 | CODE: |
380 | CODE: |
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381 | perlinterp_release (); |
79 | { |
382 | { |
80 | int w = gdk_pixbuf_get_width (pb); |
383 | int w = gdk_pixbuf_get_width (pb); |
81 | int h = gdk_pixbuf_get_height (pb); |
384 | int h = gdk_pixbuf_get_height (pb); |
82 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
385 | int bpp = gdk_pixbuf_get_n_channels (pb); |
83 | int x, y, i; |
386 | int x, y, i; |
84 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
387 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
85 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
388 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
86 | |
389 | |
87 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
390 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
88 | |
391 | |
89 | dst = gdk_pixbuf_get_pixels (RETVAL); |
392 | dst = gdk_pixbuf_get_pixels (RETVAL); |
90 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
393 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
91 | |
394 | |
92 | for (y = 0; y < h; y++) |
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93 | for (x = 0; x < w; x++) |
395 | for (x = 0; x < w; x++) |
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396 | for (y = 0; y < h; y++) |
94 | for (i = 0; i < bpp; i++) |
397 | for (i = 0; i < 3; i++) |
95 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
398 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
96 | } |
399 | } |
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400 | perlinterp_acquire (); |
97 | OUTPUT: |
401 | OUTPUT: |
98 | RETVAL |
402 | RETVAL |
99 | |
403 | |
100 | GdkPixbuf_noinc * |
404 | GdkPixbuf_noinc * |
101 | flop (GdkPixbuf *pb) |
405 | rotate (GdkPixbuf *pb, int angle) |
102 | CODE: |
406 | CODE: |
103 | { |
407 | perlinterp_release (); |
104 | int w = gdk_pixbuf_get_width (pb); |
408 | if (angle < 0) |
105 | int h = gdk_pixbuf_get_height (pb); |
409 | angle += 360; |
106 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
410 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
107 | int x, y, i; |
411 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
108 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
412 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
109 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
413 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
110 | |
414 | : angle); |
111 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
415 | perlinterp_acquire (); |
112 | |
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113 | dst = gdk_pixbuf_get_pixels (RETVAL); |
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114 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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115 | |
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116 | for (y = 0; y < h; y++) |
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117 | for (x = 0; x < w; x++) |
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118 | for (i = 0; i < bpp; i++) |
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119 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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120 | } |
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121 | OUTPUT: |
416 | OUTPUT: |
122 | RETVAL |
417 | RETVAL |
123 | |
418 | |
|
|
419 | const char * |
|
|
420 | filetype (SV *image_data) |
|
|
421 | CODE: |
|
|
422 | { |
|
|
423 | STRLEN data_len; |
|
|
424 | U8 *data = SvPVbyte (image_data, data_len); |
|
|
425 | static const unsigned char jxl_header[] = { |
|
|
426 | 0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a |
|
|
427 | }; |
|
|
428 | |
|
|
429 | if (data_len >= 20 |
|
|
430 | && data[0] == 0xff |
|
|
431 | && data[1] == 0xd8 |
|
|
432 | && data[2] == 0xff) |
|
|
433 | RETVAL = "image/jpeg"; |
|
|
434 | else if (data_len >= 12 |
|
|
435 | && data[ 0] == (U8)'R' |
|
|
436 | && data[ 1] == (U8)'I' |
|
|
437 | && data[ 2] == (U8)'F' |
|
|
438 | && data[ 3] == (U8)'F' |
|
|
439 | && data[ 8] == (U8)'W' |
|
|
440 | && data[ 9] == (U8)'E' |
|
|
441 | && data[10] == (U8)'B' |
|
|
442 | && data[11] == (U8)'P') |
|
|
443 | RETVAL = "image/webp"; |
|
|
444 | else if (data_len >= 16 |
|
|
445 | && data[ 0] == 0x89 |
|
|
446 | && data[ 1] == (U8)'P' |
|
|
447 | && data[ 2] == (U8)'N' |
|
|
448 | && data[ 3] == (U8)'G' |
|
|
449 | && data[ 4] == 0x0d |
|
|
450 | && data[ 5] == 0x0a |
|
|
451 | && data[ 6] == 0x1a |
|
|
452 | && data[ 7] == 0x0a) |
|
|
453 | RETVAL = "image/png"; |
|
|
454 | else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0) |
|
|
455 | RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck |
|
|
456 | else if (data_len >= 2 |
|
|
457 | && data[0] == 0xff |
|
|
458 | && data[1] == 0x0a) |
|
|
459 | RETVAL = "image/jxl"; |
|
|
460 | else if (data_len >= 13 |
|
|
461 | && data[0] == 'G' |
|
|
462 | && data[1] == 'I' |
|
|
463 | && data[2] == 'F' |
|
|
464 | && data[3] == '8' |
|
|
465 | //&& (data[4] == '7' || data[4] == '9') |
|
|
466 | && data[5] == 'a') |
|
|
467 | { |
|
|
468 | RETVAL = "image/gif"; |
|
|
469 | |
|
|
470 | // now see if its animated - we require the netscape application header for this |
|
|
471 | int ofs = 13; |
|
|
472 | |
|
|
473 | if (data[10] & 0x80) |
|
|
474 | ofs += (1 << ((data[10] & 7) + 1)) * 3; |
|
|
475 | |
|
|
476 | if (data_len >= ofs + 2 + 1 + 11) |
|
|
477 | { |
|
|
478 | |
|
|
479 | // skip a graphic control extension block. we assume |
|
|
480 | // there is at most one such block - while the NAB |
|
|
481 | // has to come firstz, some files do not obey this |
|
|
482 | if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9) |
|
|
483 | ofs += 3 + data[ofs + 2] + 1; |
|
|
484 | |
|
|
485 | if (data_len >= ofs + 2 + 1 + 11) |
|
|
486 | if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1)) |
|
|
487 | RETVAL = "video/gif"; |
|
|
488 | } |
|
|
489 | } |
|
|
490 | else if (data_len >= 0x8000 + 6 |
|
|
491 | && data[0x8000+1] == (U8)'B' |
|
|
492 | && data[0x8000+2] == (U8)'E' |
|
|
493 | && data[0x8000+3] == (U8)'A' |
|
|
494 | && data[0x8000+4] == (U8)'0' |
|
|
495 | && data[0x8000+5] == (U8)'1') |
|
|
496 | RETVAL = "video/iso-bluray"; |
|
|
497 | else if (data_len >= 0x8000 + 6 |
|
|
498 | && data[0x8000+1] == (U8)'C' |
|
|
499 | && data[0x8000+2] == (U8)'D' |
|
|
500 | && data[0x8000+3] == (U8)'0' |
|
|
501 | && data[0x8000+4] == (U8)'0' |
|
|
502 | && data[0x8000+5] == (U8)'1') |
|
|
503 | RETVAL = "video/iso9660"; |
|
|
504 | |
|
|
505 | else |
|
|
506 | XSRETURN_UNDEF; |
|
|
507 | } |
|
|
508 | OUTPUT: |
|
|
509 | RETVAL |
|
|
510 | |
|
|
511 | GdkPixbuf_noinc * |
|
|
512 | decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
513 | CODE: |
|
|
514 | { |
|
|
515 | #if WEBP |
|
|
516 | STRLEN data_size; |
|
|
517 | int alpha; |
|
|
518 | WebPData data; |
|
|
519 | WebPDemuxer *demux; |
|
|
520 | WebPIterator iter; |
|
|
521 | WebPDecoderConfig config; |
|
|
522 | int inw, inh; |
|
|
523 | |
|
|
524 | data.bytes = (uint8_t *)SvPVbyte (image_data, data_size); |
|
|
525 | data.size = data_size; |
|
|
526 | |
|
|
527 | perlinterp_release (); |
|
|
528 | |
|
|
529 | RETVAL = 0; |
|
|
530 | |
|
|
531 | if (!(demux = WebPDemux (&data))) |
|
|
532 | goto err_demux; |
|
|
533 | |
|
|
534 | if (!WebPDemuxGetFrame (demux, 1, &iter)) |
|
|
535 | goto err_iter; |
|
|
536 | |
|
|
537 | if (!WebPInitDecoderConfig (&config)) |
|
|
538 | goto err_iter; |
|
|
539 | |
|
|
540 | config.options.use_threads = 1; |
|
|
541 | |
|
|
542 | if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK) |
|
|
543 | goto err_iter; |
|
|
544 | |
|
|
545 | inw = config.input.width; |
|
|
546 | inh = config.input.height; |
|
|
547 | |
|
|
548 | if (thumbnail) |
|
|
549 | { |
|
|
550 | if (inw * ih > inh * iw) |
|
|
551 | ih = (iw * inh + inw - 1) / inw; |
|
|
552 | else |
|
|
553 | iw = (ih * inw + inh - 1) / inh; |
|
|
554 | |
|
|
555 | config.options.bypass_filtering = 1; |
|
|
556 | config.options.no_fancy_upsampling = 1; |
|
|
557 | |
|
|
558 | config.options.use_scaling = 1; |
|
|
559 | config.options.scaled_width = iw; |
|
|
560 | config.options.scaled_height = ih; |
|
|
561 | } |
|
|
562 | else |
|
|
563 | { |
|
|
564 | iw = inw; |
|
|
565 | ih = inh; |
|
|
566 | } |
|
|
567 | |
|
|
568 | alpha = !!config.input.has_alpha; |
|
|
569 | |
|
|
570 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih); |
|
|
571 | if (!RETVAL) |
|
|
572 | goto err_iter; |
|
|
573 | |
|
|
574 | config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; |
|
|
575 | config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); |
|
|
576 | config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
577 | config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); |
|
|
578 | config.output.is_external_memory = 1; |
|
|
579 | |
|
|
580 | if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK) |
|
|
581 | { |
|
|
582 | g_object_unref (RETVAL); |
|
|
583 | RETVAL = 0; |
|
|
584 | goto err_iter; |
|
|
585 | } |
|
|
586 | |
|
|
587 | err_iter: |
|
|
588 | WebPDemuxReleaseIterator (&iter); |
|
|
589 | err_demux: |
|
|
590 | WebPDemuxDelete (demux); |
|
|
591 | |
|
|
592 | perlinterp_acquire (); |
|
|
593 | #else |
|
|
594 | croak ("load_webp: webp not enabled at compile time"); |
|
|
595 | #endif |
|
|
596 | } |
|
|
597 | OUTPUT: |
|
|
598 | RETVAL |
|
|
599 | |
|
|
600 | GdkPixbuf_noinc * |
|
|
601 | decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
602 | CODE: |
|
|
603 | { |
|
|
604 | #if JXL |
|
|
605 | JxlDecoder *dec; |
|
|
606 | JxlBasicInfo info; |
|
|
607 | const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data); |
|
|
608 | size_t avail_in = SvCUR (image_data); |
|
|
609 | const char *error = 0; |
|
|
610 | JxlDecoderStatus status; |
|
|
611 | static void *runner_cache; |
|
|
612 | void *runner = 0; |
|
|
613 | |
|
|
614 | RETVAL = 0; |
|
|
615 | |
|
|
616 | if (runner_cache) |
|
|
617 | runner = runner_cache; |
|
|
618 | else |
|
|
619 | runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ()); |
|
|
620 | |
|
|
621 | runner_cache = 0; |
|
|
622 | |
|
|
623 | perlinterp_release (); |
|
|
624 | |
|
|
625 | dec = JxlDecoderCreate (0); |
|
|
626 | |
|
|
627 | error = "JxlDecoderCreate failed"; |
|
|
628 | if (!dec) |
|
|
629 | goto done; |
|
|
630 | |
|
|
631 | status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner); |
|
|
632 | error = "JxlDecoderSetParallelRunner failed"; |
|
|
633 | if (status != JXL_DEC_SUCCESS) |
|
|
634 | goto done; |
|
|
635 | |
|
|
636 | error = "JxlDecoderSubscribeEvents failed"; |
|
|
637 | status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE); |
|
|
638 | if (status != JXL_DEC_SUCCESS) |
|
|
639 | goto done; |
|
|
640 | |
|
|
641 | status = JxlDecoderSetInput (dec, next_in, avail_in); |
|
|
642 | error = "JxlDecoderSetInput failed"; |
|
|
643 | if (status != JXL_DEC_SUCCESS) |
|
|
644 | goto done; |
|
|
645 | |
|
|
646 | for (;;) |
|
|
647 | { |
|
|
648 | status = JxlDecoderProcessInput (dec); |
|
|
649 | |
|
|
650 | switch (status) |
|
|
651 | { |
|
|
652 | case JXL_DEC_FULL_IMAGE: |
|
|
653 | error = 0; |
|
|
654 | goto done; |
|
|
655 | |
|
|
656 | case JXL_DEC_ERROR: |
|
|
657 | error = "JxlDecoderProcessInput failed"; |
|
|
658 | goto done; |
|
|
659 | |
|
|
660 | case JXL_DEC_NEED_MORE_INPUT: |
|
|
661 | error = "incomplete file"; |
|
|
662 | goto done; |
|
|
663 | |
|
|
664 | case JXL_DEC_SUCCESS: |
|
|
665 | error = "incomplete decode"; |
|
|
666 | goto done; |
|
|
667 | |
|
|
668 | case JXL_DEC_BASIC_INFO: |
|
|
669 | { |
|
|
670 | status = JxlDecoderGetBasicInfo (dec, &info); |
|
|
671 | error = "JxlDecoderGetBasicInfo failed"; |
|
|
672 | if (status != JXL_DEC_SUCCESS) |
|
|
673 | goto done; |
|
|
674 | |
|
|
675 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize); |
|
|
676 | error = "unable to allocate pixbuf"; |
|
|
677 | if (!RETVAL) |
|
|
678 | goto done; |
|
|
679 | |
|
|
680 | JxlPixelFormat format = { |
|
|
681 | info.alpha_bits ? 4 : 3, |
|
|
682 | JXL_TYPE_UINT8, |
|
|
683 | JXL_NATIVE_ENDIAN, |
|
|
684 | gdk_pixbuf_get_rowstride (RETVAL) |
|
|
685 | }; |
|
|
686 | |
|
|
687 | // cannot use gdk_pixbuf_get_byte_length because that does |
|
|
688 | // not return the size of the buffer, but the size of the buffer without |
|
|
689 | // the last padding bytes. the internal buffer is rowstride * ysize, |
|
|
690 | // and this is what the jxl decoder needs. none of this is documented |
|
|
691 | // in either library, of course. |
|
|
692 | |
|
|
693 | status = JxlDecoderSetImageOutBuffer ( |
|
|
694 | dec, |
|
|
695 | &format, |
|
|
696 | gdk_pixbuf_get_pixels (RETVAL), |
|
|
697 | gdk_pixbuf_get_rowstride (RETVAL) * info.ysize |
|
|
698 | ); |
|
|
699 | error = "JxlDecoderSetImageOutBuffer failed"; |
|
|
700 | if (status != JXL_DEC_SUCCESS) |
|
|
701 | goto done; |
|
|
702 | } |
|
|
703 | break; |
|
|
704 | |
|
|
705 | default: |
|
|
706 | error = "unexpected event"; |
|
|
707 | goto done; |
|
|
708 | } |
|
|
709 | } |
|
|
710 | |
|
|
711 | done: |
|
|
712 | if (dec) |
|
|
713 | JxlDecoderDestroy (dec); |
|
|
714 | |
|
|
715 | perlinterp_acquire (); |
|
|
716 | |
|
|
717 | if (runner_cache) |
|
|
718 | JxlThreadParallelRunnerDestroy (runner); |
|
|
719 | |
|
|
720 | runner_cache = runner; |
|
|
721 | |
|
|
722 | if (error) |
|
|
723 | { |
|
|
724 | if (RETVAL) |
|
|
725 | g_object_unref (RETVAL); |
|
|
726 | |
|
|
727 | croak ("load_jxl: %s (status %d)", error, status); |
|
|
728 | } |
|
|
729 | #else |
|
|
730 | croak ("load_jxl: jpeg-xl not enabled at compile time"); |
|
|
731 | #endif |
|
|
732 | } |
|
|
733 | OUTPUT: |
|
|
734 | RETVAL |
|
|
735 | |
|
|
736 | GdkPixbuf_noinc * |
|
|
737 | decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
738 | CODE: |
|
|
739 | { |
|
|
740 | struct jpeg_decompress_struct cinfo; |
|
|
741 | struct jpg_err_mgr jerr; |
|
|
742 | int rs; |
|
|
743 | volatile GdkPixbuf *pb = 0; |
|
|
744 | STRLEN data_len; |
|
|
745 | guchar *data = SvPVbyte (image_data, data_len); |
|
|
746 | |
|
|
747 | RETVAL = 0; |
|
|
748 | |
|
|
749 | perlinterp_release (); |
|
|
750 | |
|
|
751 | cinfo.err = jpeg_std_error (&jerr.err); |
|
|
752 | |
|
|
753 | jerr.err.error_exit = cv_error_exit; |
|
|
754 | jerr.err.output_message = cv_error_output; |
|
|
755 | |
|
|
756 | if ((rs = setjmp (jerr.setjmp_buffer))) |
|
|
757 | { |
|
|
758 | jpeg_destroy_decompress (&cinfo); |
|
|
759 | |
|
|
760 | if (pb) |
|
|
761 | g_object_unref ((gpointer)pb); |
|
|
762 | |
|
|
763 | perlinterp_acquire (); |
|
|
764 | XSRETURN_UNDEF; |
|
|
765 | } |
|
|
766 | |
|
|
767 | if (!data_len) |
|
|
768 | longjmp (jerr.setjmp_buffer, 4); |
|
|
769 | |
|
|
770 | jpeg_create_decompress (&cinfo); |
|
|
771 | cv_jpeg_mem_src (&cinfo, data, data_len); |
|
|
772 | |
|
|
773 | jpeg_read_header (&cinfo, TRUE); |
|
|
774 | |
|
|
775 | cinfo.dct_method = JDCT_DEFAULT; |
|
|
776 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
|
|
777 | cinfo.do_block_smoothing = FALSE; |
|
|
778 | cinfo.out_color_space = JCS_RGB; |
|
|
779 | cinfo.quantize_colors = FALSE; |
|
|
780 | |
|
|
781 | cinfo.scale_num = 1; |
|
|
782 | cinfo.scale_denom = 1; |
|
|
783 | |
|
|
784 | jpeg_calc_output_dimensions (&cinfo); |
|
|
785 | |
|
|
786 | if (thumbnail) |
|
|
787 | { |
|
|
788 | cinfo.dct_method = JDCT_FASTEST; |
|
|
789 | cinfo.do_fancy_upsampling = FALSE; |
|
|
790 | |
|
|
791 | while (cinfo.scale_denom < 8 |
|
|
792 | && cinfo.output_width >= iw*4 |
|
|
793 | && cinfo.output_height >= ih*4) |
|
|
794 | { |
|
|
795 | cinfo.scale_denom <<= 1; |
|
|
796 | jpeg_calc_output_dimensions (&cinfo); |
|
|
797 | } |
|
|
798 | } |
|
|
799 | |
|
|
800 | if (cinfo.output_components != 3) |
|
|
801 | longjmp (jerr.setjmp_buffer, 3); |
|
|
802 | |
|
|
803 | if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) |
|
|
804 | { |
|
|
805 | cinfo.out_color_space = JCS_CMYK; |
|
|
806 | cinfo.output_components = 4; |
|
|
807 | } |
|
|
808 | |
|
|
809 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
|
|
810 | if (!RETVAL) |
|
|
811 | longjmp (jerr.setjmp_buffer, 2); |
|
|
812 | |
|
|
813 | data = gdk_pixbuf_get_pixels (RETVAL); |
|
|
814 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
815 | |
|
|
816 | jpeg_start_decompress (&cinfo); |
|
|
817 | |
|
|
818 | while (cinfo.output_scanline < cinfo.output_height) |
|
|
819 | { |
|
|
820 | int remaining = cinfo.output_height - cinfo.output_scanline; |
|
|
821 | JSAMPROW rp[4]; |
|
|
822 | |
|
|
823 | rp [0] = data + cinfo.output_scanline * rs; |
|
|
824 | rp [1] = (guchar *)rp [0] + rs; |
|
|
825 | rp [2] = (guchar *)rp [1] + rs; |
|
|
826 | rp [3] = (guchar *)rp [2] + rs; |
|
|
827 | |
|
|
828 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
|
|
829 | } |
|
|
830 | |
|
|
831 | if (cinfo.out_color_space == JCS_CMYK) |
|
|
832 | { |
|
|
833 | guchar *end = data + cinfo.output_height * rs; |
|
|
834 | |
|
|
835 | while (data < end) |
|
|
836 | { |
|
|
837 | U32 c = data [0]; |
|
|
838 | U32 m = data [1]; |
|
|
839 | U32 y = data [2]; |
|
|
840 | U32 k = data [3]; |
|
|
841 | |
|
|
842 | if (0) |
|
|
843 | if (cinfo.Adobe_transform == 2) |
|
|
844 | { |
|
|
845 | c ^= 0xff; |
|
|
846 | m ^= 0xff; |
|
|
847 | y ^= 0xff; |
|
|
848 | k ^= 0xff; |
|
|
849 | } |
|
|
850 | |
|
|
851 | data [0] = (c * k + 0x80) / 0xff; |
|
|
852 | data [1] = (m * k + 0x80) / 0xff; |
|
|
853 | data [2] = (y * k + 0x80) / 0xff; |
|
|
854 | data [3] = 0xff; |
|
|
855 | |
|
|
856 | data += 4; |
|
|
857 | } |
|
|
858 | } |
|
|
859 | |
|
|
860 | jpeg_finish_decompress (&cinfo); |
|
|
861 | jpeg_destroy_decompress (&cinfo); |
|
|
862 | perlinterp_acquire (); |
|
|
863 | } |
|
|
864 | OUTPUT: |
|
|
865 | RETVAL |
|
|
866 | |
|
|
867 | void |
|
|
868 | compare (GdkPixbuf *a, GdkPixbuf *b) |
|
|
869 | PPCODE: |
|
|
870 | perlinterp_release (); |
|
|
871 | { |
|
|
872 | int w = gdk_pixbuf_get_width (a); |
|
|
873 | int h = gdk_pixbuf_get_height (a); |
|
|
874 | |
|
|
875 | int sa = gdk_pixbuf_get_rowstride (a); |
|
|
876 | int sb = gdk_pixbuf_get_rowstride (b); |
|
|
877 | |
|
|
878 | guchar *pa = gdk_pixbuf_get_pixels (a); |
|
|
879 | guchar *pb = gdk_pixbuf_get_pixels (b); |
|
|
880 | |
|
|
881 | int x, y; |
|
|
882 | |
|
|
883 | assert (w == gdk_pixbuf_get_width (b)); |
|
|
884 | assert (h == gdk_pixbuf_get_height (b)); |
|
|
885 | |
|
|
886 | assert (gdk_pixbuf_get_n_channels (a) == 3); |
|
|
887 | assert (gdk_pixbuf_get_n_channels (b) == 3); |
|
|
888 | |
|
|
889 | double diff = 0.; |
|
|
890 | int peak = 0; |
|
|
891 | |
|
|
892 | if (w && h) |
|
|
893 | for (y = 0; y < h; y++) |
|
|
894 | { |
|
|
895 | guchar *pa_ = pa + y * sa; |
|
|
896 | guchar *pb_ = pb + y * sb; |
|
|
897 | |
|
|
898 | for (x = 0; x < w; x++) |
|
|
899 | { |
|
|
900 | int d; |
|
|
901 | |
|
|
902 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
903 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
904 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
|
|
905 | } |
|
|
906 | } |
|
|
907 | |
|
|
908 | perlinterp_acquire (); |
|
|
909 | |
|
|
910 | EXTEND (SP, 2); |
|
|
911 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
912 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
|
|
913 | } |
|
|
914 | |
124 | ############################################################################# |
915 | ############################################################################# |
125 | |
916 | |
126 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
917 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
127 | |
918 | |
|
|
919 | # currently only works for filenames (octet strings) |
|
|
920 | |
|
|
921 | SV * |
|
|
922 | foldcase (SV *pathsv) |
|
|
923 | PROTOTYPE: $ |
|
|
924 | CODE: |
|
|
925 | { |
|
|
926 | STRLEN plen; |
|
|
927 | U8 *path = (U8 *)SvPV (pathsv, plen); |
|
|
928 | U8 *pend = path + plen; |
|
|
929 | U8 dst [plen * 8 * 3], *dstp = dst; |
|
|
930 | |
|
|
931 | while (path < pend) |
|
|
932 | { |
|
|
933 | U8 ch = *path; |
|
|
934 | |
|
|
935 | if (ch >= 'a' && ch <= 'z') |
|
|
936 | *dstp++ = *path++; |
|
|
937 | else if (ch >= 'A' && ch <= 'Z') |
|
|
938 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
939 | else if (ch >= '0' && ch <= '9') |
|
|
940 | { |
|
|
941 | /* version sort, up to 8 digits */ |
|
|
942 | STRLEN el, nl = 0; |
|
|
943 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
944 | path++, nl++; |
|
|
945 | |
|
|
946 | for (el = nl; el < 8; el++) |
|
|
947 | *dstp++ = '0'; |
|
|
948 | |
|
|
949 | memcpy (dstp, path - nl, nl); |
|
|
950 | dstp += nl; |
|
|
951 | } |
|
|
952 | else |
|
|
953 | *dstp++ = *path++; |
|
|
954 | #if 0 |
|
|
955 | else |
|
|
956 | { |
|
|
957 | STRLEN cl; |
|
|
958 | to_utf8_fold (path, dstp, &cl); |
|
|
959 | dstp += cl; |
|
|
960 | path += is_utf8_char (path); |
|
|
961 | } |
|
|
962 | #endif |
|
|
963 | } |
|
|
964 | |
|
|
965 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
|
|
966 | } |
|
|
967 | OUTPUT: |
|
|
968 | RETVAL |
|
|
969 | |
128 | GdkPixbuf_noinc * |
970 | GdkPixbuf_noinc * |
129 | p7_to_pb (int w, int h, guchar *src) |
971 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
972 | PROTOTYPE: @ |
130 | CODE: |
973 | CODE: |
131 | { |
974 | { |
132 | int x, y; |
975 | int x, y; |
133 | guchar *dst, *d; |
976 | guchar *dst, *d; |
134 | int dstr; |
977 | int dstr; |
|
|
978 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
135 | |
979 | |
136 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
980 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
137 | dst = gdk_pixbuf_get_pixels (RETVAL); |
981 | dst = gdk_pixbuf_get_pixels (RETVAL); |
138 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
982 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
139 | |
983 | |
… | |
… | |
148 | } |
992 | } |
149 | } |
993 | } |
150 | OUTPUT: |
994 | OUTPUT: |
151 | RETVAL |
995 | RETVAL |
152 | |
996 | |
|
|
997 | ############################################################################# |
|
|
998 | |
|
|
999 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
1000 | |
|
|
1001 | void |
|
|
1002 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
1003 | CODE: |
|
|
1004 | { |
|
|
1005 | int w = gdk_pixbuf_get_width (pb); |
|
|
1006 | int h = gdk_pixbuf_get_height (pb); |
|
|
1007 | int x, y, i; |
|
|
1008 | guchar *dst; |
|
|
1009 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
1010 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
1011 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
1012 | |
|
|
1013 | a85_init (); |
|
|
1014 | |
|
|
1015 | for (y = 0; y < h; y++) |
|
|
1016 | for (x = 0; x < w; x++) |
|
|
1017 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
1018 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
1019 | |
|
|
1020 | a85_finish (fp); |
|
|
1021 | } |
|
|
1022 | |
|
|
1023 | void |
|
|
1024 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
1025 | CODE: |
|
|
1026 | { |
|
|
1027 | int w = gdk_pixbuf_get_width (pb); |
|
|
1028 | int h = gdk_pixbuf_get_height (pb); |
|
|
1029 | int x, y, i; |
|
|
1030 | guchar *dst; |
|
|
1031 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
1032 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
1033 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
1034 | |
|
|
1035 | for (y = 0; y < h; y++) |
|
|
1036 | for (x = 0; x < w; x++) |
|
|
1037 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
1038 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
1039 | } |
|
|
1040 | |
|
|
1041 | ############################################################################# |
|
|
1042 | |
|
|
1043 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
1044 | |
153 | SV * |
1045 | SV * |
154 | pb_to_p7 (GdkPixbuf *pb) |
1046 | pb_to_hv84 (GdkPixbuf *pb) |
155 | CODE: |
1047 | CODE: |
156 | { |
1048 | { |
157 | int w = gdk_pixbuf_get_width (pb); |
1049 | int w = gdk_pixbuf_get_width (pb); |
158 | int h = gdk_pixbuf_get_height (pb); |
1050 | int h = gdk_pixbuf_get_height (pb); |
159 | int x, y; |
1051 | int x, y; |
160 | guchar *dst; |
1052 | guchar *dst; |
161 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
1053 | int bpp = gdk_pixbuf_get_n_channels (pb); |
162 | guchar *src = gdk_pixbuf_get_pixels (pb); |
1054 | guchar *src = gdk_pixbuf_get_pixels (pb); |
163 | int sstr = gdk_pixbuf_get_rowstride (pb); |
1055 | int sstr = gdk_pixbuf_get_rowstride (pb); |
164 | int Er[IW], Eg[IW], Eb[IW]; |
|
|
165 | int seed = 77; |
|
|
166 | |
1056 | |
167 | RETVAL = newSV (w * h); |
1057 | RETVAL = newSV (6 * 8 * 12 / 8); |
168 | SvPOK_only (RETVAL); |
1058 | SvPOK_only (RETVAL); |
169 | SvCUR_set (RETVAL, w * h); |
1059 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
170 | |
1060 | |
171 | dst = SvPVX (RETVAL); |
1061 | dst = (guchar *)SvPVX (RETVAL); |
172 | |
|
|
173 | memset (Er, 0, sizeof (int) * IW); |
|
|
174 | memset (Eg, 0, sizeof (int) * IW); |
|
|
175 | memset (Eb, 0, sizeof (int) * IW); |
|
|
176 | |
1062 | |
177 | /* some primitive error distribution + random dithering */ |
1063 | /* some primitive error distribution + random dithering */ |
178 | |
1064 | |
179 | for (y = 0; y < h; y++) |
1065 | for (y = 0; y < h; y++) |
180 | { |
1066 | { |
181 | int er = 0, eg = 0, eb = 0; |
1067 | guchar *p = src + y * sstr; |
182 | |
1068 | |
183 | for (x = 0; x < w; x++) |
1069 | for (x = 0; x < w; x += 2) |
184 | { |
1070 | { |
185 | int r, g, b; |
1071 | unsigned int r, g, b, h, s, v, H, V1, V2; |
186 | guchar *p = src + x * bpp + y * sstr; |
|
|
187 | |
1072 | |
188 | r = ((p[0] + er + Er[x]) * 7 + 128) / 255; |
1073 | if (bpp == 3) |
189 | g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; |
1074 | r = *p++, g = *p++, b = *p++; |
190 | b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; |
1075 | else if (bpp == 1) |
|
|
1076 | r = g = b = *p++; |
|
|
1077 | else |
|
|
1078 | abort (); |
191 | |
1079 | |
192 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
1080 | rgb_to_hsv (r, g, b, &h, &s, &v); |
193 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
194 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
195 | |
1081 | |
196 | er += p[0] - (r * 255 + 4) / 7; |
1082 | H = (h * 15 / 255) << 4; |
197 | eg += p[1] - (g * 255 + 4) / 7; |
1083 | V1 = v; |
198 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
199 | |
1084 | |
200 | Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3; |
1085 | if (bpp == 3) |
201 | Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3; |
1086 | r = *p++, g = *p++, b = *p++; |
202 | Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3; |
1087 | else if (bpp == 1) |
|
|
1088 | r = g = b = *p++; |
|
|
1089 | else |
|
|
1090 | abort (); |
203 | |
1091 | |
204 | *dst++ = r << 5 | g << 2 | b; |
1092 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
1093 | |
|
|
1094 | H |= h * 15 / 255; |
|
|
1095 | V2 = v; |
|
|
1096 | |
|
|
1097 | *dst++ = H; |
|
|
1098 | *dst++ = V1; |
|
|
1099 | *dst++ = V2; |
205 | } |
1100 | } |
206 | } |
1101 | } |
207 | } |
1102 | } |
208 | OUTPUT: |
1103 | OUTPUT: |
209 | RETVAL |
1104 | RETVAL |
210 | |
1105 | |
|
|
1106 | SV * |
|
|
1107 | hv84_to_av (unsigned char *hv84) |
|
|
1108 | CODE: |
|
|
1109 | { |
|
|
1110 | int i = 72 / 3; |
|
|
1111 | AV *av = newAV (); |
|
|
1112 | |
|
|
1113 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
1114 | while (i--) |
|
|
1115 | { |
|
|
1116 | int h = *hv84++; |
|
|
1117 | int v1 = *hv84++; |
|
|
1118 | int v2 = *hv84++; |
|
|
1119 | |
|
|
1120 | av_push (av, newSViv (v1)); |
|
|
1121 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
1122 | av_push (av, newSViv (v2)); |
|
|
1123 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
1124 | } |
|
|
1125 | } |
|
|
1126 | OUTPUT: |
|
|
1127 | RETVAL |
|
|
1128 | |
211 | ############################################################################# |
1129 | ############################################################################# |
212 | |
1130 | |
213 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
1131 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
214 | |
1132 | |
215 | void |
1133 | SV * |
216 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
1134 | extract_features (SV *ar) |
217 | CODE: |
1135 | CODE: |
218 | { |
1136 | { |
219 | int w = gdk_pixbuf_get_width (pb); |
1137 | int i; |
220 | int h = gdk_pixbuf_get_height (pb); |
1138 | AV *av, *result; |
221 | int x, y, i; |
|
|
222 | guchar *dst; |
|
|
223 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
|
|
224 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
225 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
226 | |
1139 | |
227 | a85_init (); |
1140 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
1141 | croak ("Not an array ref as first argument to extract_features"); |
228 | |
1142 | |
229 | for (y = 0; y < h; y++) |
1143 | av = (AV *) SvRV (ar); |
230 | for (x = 0; x < w; x++) |
1144 | result = newAV (); |
231 | for (i = 0; i < 3; i++) |
|
|
232 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
233 | |
1145 | |
234 | a85_finish (fp); |
1146 | for (i = 0; i <= av_len (av); ++i) |
235 | } |
1147 | { |
|
|
1148 | SV *sv = *av_fetch (av, i, 1); |
|
|
1149 | SV *histsv = newSV (9 * sizeof (float) + 1); |
236 | |
1150 | |
|
|
1151 | SvPOK_on (histsv); |
|
|
1152 | SvCUR_set (histsv, 9 * sizeof (float)); |
|
|
1153 | float *hist = (float *)SvPVX (histsv); |
237 | |
1154 | |
|
|
1155 | struct feature f_h, f_s, f_v; |
|
|
1156 | feature_init (&f_h); |
|
|
1157 | feature_init (&f_s); |
|
|
1158 | feature_init (&f_v); |
238 | |
1159 | |
|
|
1160 | { |
|
|
1161 | STRLEN len; |
|
|
1162 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
1163 | while (len >= 3) |
|
|
1164 | { |
|
|
1165 | unsigned int r, g, b, h, s, v; |
|
|
1166 | r = *buf++; g = *buf++; b = *buf++; |
|
|
1167 | rgb_to_hsv (r, g, b, &h, &s, &v); |
239 | |
1168 | |
|
|
1169 | feature_update_pass_1 (&f_h, h); |
|
|
1170 | feature_update_pass_1 (&f_s, s); |
|
|
1171 | feature_update_pass_1 (&f_v, v); |
|
|
1172 | |
|
|
1173 | len -= 3; |
|
|
1174 | } |
|
|
1175 | |
|
|
1176 | feature_finish_pass_1 (&f_h); |
|
|
1177 | feature_finish_pass_1 (&f_s); |
|
|
1178 | feature_finish_pass_1 (&f_v); |
|
|
1179 | } |
|
|
1180 | |
|
|
1181 | { |
|
|
1182 | STRLEN len; |
|
|
1183 | unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
|
|
1184 | while (len >= 3) |
|
|
1185 | { |
|
|
1186 | unsigned int r, g, b, h, s, v; |
|
|
1187 | r = *buf++; g = *buf++; b = *buf++; |
|
|
1188 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
1189 | |
|
|
1190 | feature_update_pass_2 (&f_h, h); |
|
|
1191 | feature_update_pass_2 (&f_s, s); |
|
|
1192 | feature_update_pass_2 (&f_v, v); |
|
|
1193 | |
|
|
1194 | len -= 3; |
|
|
1195 | } |
|
|
1196 | |
|
|
1197 | feature_finish_pass_2 (&f_h); |
|
|
1198 | feature_finish_pass_2 (&f_s); |
|
|
1199 | feature_finish_pass_2 (&f_v); |
|
|
1200 | } |
|
|
1201 | |
|
|
1202 | hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
|
|
1203 | hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
|
|
1204 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
1205 | |
|
|
1206 | av_push (result, histsv); |
|
|
1207 | } |
|
|
1208 | |
|
|
1209 | RETVAL = newRV_noinc ((SV *)result); |
|
|
1210 | } |
|
|
1211 | OUTPUT: |
|
|
1212 | RETVAL |
|
|
1213 | |