1 |
root |
1.1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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root |
1.18 |
#include <string.h> |
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root |
1.17 |
#include <setjmp.h> |
7 |
root |
1.33 |
#include <math.h> |
8 |
root |
1.17 |
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9 |
root |
1.31 |
#include <magic.h> |
10 |
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root |
1.17 |
#include <jpeglib.h> |
12 |
root |
1.53 |
#include <jerror.h> |
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1.23 |
#include <glib.h> |
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#include <gtk/gtk.h> |
16 |
root |
1.50 |
#include <gdk/gdkx.h> |
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1.2 |
#include <gdk-pixbuf/gdk-pixbuf.h> |
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19 |
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#include <gperl.h> |
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#include <gtk2perl.h> |
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22 |
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1.43 |
#include <assert.h> |
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24 |
root |
1.50 |
#if WEBP |
25 |
root |
1.54 |
#include <webp/demux.h> |
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root |
1.50 |
#include <webp/decode.h> |
27 |
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#endif |
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29 |
root |
1.58 |
#if JXL |
30 |
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#include <jxl/decode.h> |
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#include "jxl/thread_parallel_runner.h" |
32 |
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#endif |
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34 |
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1.46 |
#include "perlmulticore.h" |
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36 |
root |
1.33 |
#define IW 80 /* MUST match Schnauzer.pm! */ |
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#define IH 60 /* MUST match Schnauzer.pm! */ |
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root |
1.5 |
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39 |
root |
1.7 |
#define LINELENGTH 240 |
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41 |
root |
1.6 |
#define ELLIPSIS "\xe2\x80\xa6" |
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1.42 |
typedef char *octet_string; |
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45 |
root |
1.51 |
static magic_t magic_cookie[2]; /* !mime, mime */ |
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47 |
root |
1.17 |
struct jpg_err_mgr |
48 |
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{ |
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struct jpeg_error_mgr err; |
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jmp_buf setjmp_buffer; |
51 |
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}; |
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static void |
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cv_error_exit (j_common_ptr cinfo) |
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{ |
56 |
root |
1.48 |
cinfo->err->output_message (cinfo); |
57 |
root |
1.17 |
longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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} |
59 |
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60 |
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static void |
61 |
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cv_error_output (j_common_ptr cinfo) |
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{ |
63 |
root |
1.48 |
char msg[JMSG_LENGTH_MAX]; |
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65 |
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cinfo->err->format_message (cinfo, msg); |
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67 |
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fprintf (stderr, "JPEG decoding error: %s\n", msg); |
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root |
1.17 |
return; |
69 |
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} |
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71 |
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static void |
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rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
73 |
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unsigned int *h, unsigned int *s, unsigned int *v) |
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{ |
75 |
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unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
77 |
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unsigned int delta = mx - mn; |
78 |
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79 |
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*v = mx; |
80 |
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*s = mx ? delta * 255 / mx : 0; |
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83 |
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if (delta == 0) |
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*h = 0; |
85 |
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else |
86 |
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{ |
87 |
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if (r == mx) |
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*h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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else if (g == mx) |
90 |
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*h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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else if (b == mx) |
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*h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
93 |
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94 |
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*h &= 255; |
95 |
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} |
96 |
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} |
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98 |
root |
1.36 |
struct feature { |
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float v1, v2, v3; // mean, square, cube |
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int n; |
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}; |
102 |
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103 |
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static void |
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feature_init (struct feature *f) |
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{ |
106 |
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f->v1 = 0.; |
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f->v2 = 0.; |
108 |
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f->v3 = 0.; |
109 |
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f->n = 0; |
110 |
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} |
111 |
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112 |
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// didn't find an algorithm to neatly do mean, variance and skew in one pass. |
113 |
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// elmex ist schuld. |
114 |
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static void |
115 |
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feature_update_pass_1 (struct feature *f, unsigned int v) |
116 |
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{ |
117 |
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f->v1 += v; |
118 |
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f->n += 1; |
119 |
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} |
120 |
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121 |
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static void |
122 |
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feature_finish_pass_1 (struct feature *f) |
123 |
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{ |
124 |
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if (f->n < 1) |
125 |
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return; |
126 |
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127 |
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f->v1 /= f->n; |
128 |
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} |
129 |
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130 |
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static void |
131 |
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feature_update_pass_2 (struct feature *f, unsigned int v) |
132 |
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{ |
133 |
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float d = v - f->v1; |
134 |
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135 |
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f->v2 += d * d; |
136 |
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f->v3 += d * d * d; |
137 |
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} |
138 |
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139 |
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static void |
140 |
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feature_finish_pass_2 (struct feature *f) |
141 |
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{ |
142 |
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if (f->n < 1) |
143 |
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return; |
144 |
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145 |
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f->v2 /= f->n; |
146 |
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f->v3 /= f->n; |
147 |
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148 |
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f->v1 /= 255.; |
149 |
root |
1.37 |
f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
150 |
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f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
151 |
root |
1.36 |
} |
152 |
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153 |
root |
1.4 |
static guint32 a85_val; |
154 |
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static guint a85_cnt; |
155 |
root |
1.7 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
156 |
root |
1.4 |
|
157 |
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static void |
158 |
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a85_init (void) |
159 |
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{ |
160 |
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a85_cnt = 4; |
161 |
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a85_ptr = a85_buf; |
162 |
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} |
163 |
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164 |
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static void |
165 |
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a85_push (PerlIO *fp, guchar c) |
166 |
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{ |
167 |
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a85_val = a85_val << 8 | c; |
168 |
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169 |
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if (!--a85_cnt) |
170 |
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{ |
171 |
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a85_cnt = 4; |
172 |
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if (a85_val) |
173 |
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{ |
174 |
root |
1.49 |
a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
175 |
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a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
176 |
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a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
177 |
root |
1.4 |
a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
178 |
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a85_ptr[0] = (a85_val ) + 33; |
179 |
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180 |
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a85_ptr += 5; |
181 |
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} |
182 |
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else |
183 |
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*a85_ptr++ = 'z'; |
184 |
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185 |
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if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
186 |
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{ |
187 |
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*a85_ptr++ = '\n'; |
188 |
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PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
189 |
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a85_ptr = a85_buf; |
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 |
root |
1.8 |
static void |
196 |
root |
1.4 |
a85_finish (PerlIO *fp) |
197 |
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{ |
198 |
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while (a85_cnt != 4) |
199 |
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a85_push (fp, 0); |
200 |
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201 |
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*a85_ptr++ = '~'; // probably buggy end-marker |
202 |
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*a85_ptr++ = '>'; // probably buggy end-marker |
203 |
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*a85_ptr++ = '\n'; |
204 |
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205 |
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PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
206 |
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} |
207 |
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208 |
root |
1.6 |
///////////////////////////////////////////////////////////////////////////// |
209 |
root |
1.56 |
// memory source for libjpeg |
210 |
root |
1.6 |
|
211 |
root |
1.53 |
static void cv_ms_init (j_decompress_ptr cinfo) |
212 |
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{ |
213 |
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} |
214 |
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215 |
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static void cv_ms_term (j_decompress_ptr cinfo) |
216 |
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{ |
217 |
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} |
218 |
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219 |
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static boolean cv_ms_fill (j_decompress_ptr cinfo) |
220 |
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{ |
221 |
root |
1.57 |
// unexpected EOF, warn and generate fake EOI marker |
222 |
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223 |
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WARNMS (cinfo, JWRN_JPEG_EOF); |
224 |
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225 |
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struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
226 |
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227 |
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static const JOCTET eoi[] = { 0xFF, JPEG_EOI }; |
228 |
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229 |
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src->next_input_byte = eoi; |
230 |
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src->bytes_in_buffer = sizeof (eoi); |
231 |
root |
1.53 |
|
232 |
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return TRUE; |
233 |
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} |
234 |
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235 |
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static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes) |
236 |
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{ |
237 |
root |
1.57 |
struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
238 |
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239 |
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src->next_input_byte += num_bytes; |
240 |
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src->bytes_in_buffer -= num_bytes; |
241 |
root |
1.53 |
} |
242 |
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243 |
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static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen) |
244 |
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{ |
245 |
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struct jpeg_source_mgr *src; |
246 |
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247 |
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if (!cinfo->src) |
248 |
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cinfo->src = (struct jpeg_source_mgr *) |
249 |
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(*cinfo->mem->alloc_small) ( |
250 |
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(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr) |
251 |
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); |
252 |
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253 |
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src = (struct jpeg_source_mgr *)cinfo->src; |
254 |
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src->init_source = cv_ms_init; |
255 |
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src->fill_input_buffer = cv_ms_fill; |
256 |
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src->skip_input_data = cv_ms_skip; |
257 |
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src->resync_to_restart = jpeg_resync_to_restart; |
258 |
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src->term_source = cv_ms_term; |
259 |
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src->next_input_byte = (JOCTET *)buf; |
260 |
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src->bytes_in_buffer = buflen; |
261 |
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} |
262 |
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263 |
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///////////////////////////////////////////////////////////////////////////// |
264 |
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265 |
root |
1.58 |
/* great, the jpeg-xl reference implementaton requires us to parse bmff files */ |
266 |
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267 |
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struct bmff_box |
268 |
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{ |
269 |
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char type[4]; |
270 |
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const uint8_t *ptr; |
271 |
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size_t size; |
272 |
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}; |
273 |
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274 |
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static int |
275 |
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bmff_parse_box (struct bmff_box *box, const uint8_t **next_in, size_t *avail_in) |
276 |
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{ |
277 |
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if (*avail_in < 8) |
278 |
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return 0; |
279 |
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280 |
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box->size = ((*next_in)[0] << 24) |
281 |
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| ((*next_in)[1] << 16) |
282 |
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| ((*next_in)[2] << 8) |
283 |
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| ((*next_in)[3] ); |
284 |
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285 |
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if (box->size < 8) |
286 |
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return 0; |
287 |
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288 |
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if (*avail_in < box->size) |
289 |
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return 0; |
290 |
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291 |
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memcpy (box->type, *next_in + 4, 4); |
292 |
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box->ptr = *next_in + 8; |
293 |
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294 |
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*next_in += box->size; |
295 |
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*avail_in -= box->size; |
296 |
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297 |
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box->size -= 8; |
298 |
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299 |
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return 1; |
300 |
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} |
301 |
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302 |
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///////////////////////////////////////////////////////////////////////////// |
303 |
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|
304 |
root |
1.9 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
305 |
root |
1.1 |
|
306 |
|
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PROTOTYPES: ENABLE |
307 |
root |
1.2 |
|
308 |
root |
1.56 |
# calculate the common prefix length of two strings |
309 |
root |
1.29 |
# missing function in perl. really :) |
310 |
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int |
311 |
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common_prefix_length (a, b) |
312 |
|
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unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
313 |
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unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
314 |
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CODE: |
315 |
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RETVAL = 0; |
316 |
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|
317 |
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while (*a == *b && *a) |
318 |
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{ |
319 |
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RETVAL += (*a & 0xc0) != 0x80; |
320 |
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a++, b++; |
321 |
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} |
322 |
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323 |
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OUTPUT: |
324 |
|
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RETVAL |
325 |
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|
326 |
root |
1.31 |
const char * |
327 |
root |
1.51 |
magic (SV *path_or_data) |
328 |
|
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ALIAS: |
329 |
|
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magic = 0 |
330 |
|
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magic_mime = 1 |
331 |
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magic_buffer = 2 |
332 |
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magic_buffer_mime = 3 |
333 |
root |
1.31 |
CODE: |
334 |
|
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{ |
335 |
root |
1.51 |
STRLEN len; |
336 |
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char *data = SvPVbyte (path_or_data, len); |
337 |
root |
1.31 |
|
338 |
root |
1.51 |
if (!magic_cookie[0]) |
339 |
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{ |
340 |
|
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magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
341 |
root |
1.52 |
magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
342 |
|
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magic_load (magic_cookie[0], 0); |
343 |
|
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magic_load (magic_cookie[1], 0); |
344 |
root |
1.32 |
} |
345 |
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|
346 |
root |
1.52 |
perlinterp_release (); |
347 |
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|
348 |
root |
1.51 |
RETVAL = ix & 2 |
349 |
root |
1.52 |
? magic_buffer (magic_cookie[ix & 1], data, len) |
350 |
|
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: magic_file (magic_cookie[ix & 1], data); |
351 |
root |
1.32 |
|
352 |
root |
1.46 |
perlinterp_acquire (); |
353 |
root |
1.31 |
} |
354 |
|
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OUTPUT: |
355 |
|
|
RETVAL |
356 |
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|
357 |
root |
1.40 |
# missing/broken in Gtk2 perl module |
358 |
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|
359 |
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void |
360 |
|
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gdk_window_clear_hints (GdkWindow *window) |
361 |
|
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CODE: |
362 |
|
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gdk_window_set_geometry_hints (window, 0, 0); |
363 |
root |
1.22 |
|
364 |
|
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gboolean |
365 |
|
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gdk_net_wm_supports (GdkAtom property) |
366 |
|
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CODE: |
367 |
|
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#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
368 |
|
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RETVAL = gdk_net_wm_supports (property); |
369 |
|
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#else |
370 |
|
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RETVAL = 0; |
371 |
|
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#endif |
372 |
|
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OUTPUT: |
373 |
|
|
RETVAL |
374 |
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|
375 |
root |
1.3 |
GdkPixbuf_noinc * |
376 |
root |
1.26 |
dealpha_expose (GdkPixbuf *pb) |
377 |
|
|
CODE: |
378 |
root |
1.46 |
perlinterp_release (); |
379 |
root |
1.26 |
{ |
380 |
|
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int w = gdk_pixbuf_get_width (pb); |
381 |
|
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int h = gdk_pixbuf_get_height (pb); |
382 |
|
|
int bpp = gdk_pixbuf_get_n_channels (pb); |
383 |
|
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int x, y, i; |
384 |
|
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guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
385 |
|
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int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
386 |
|
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|
387 |
|
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RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
388 |
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|
389 |
|
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dst = gdk_pixbuf_get_pixels (RETVAL); |
390 |
|
|
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
391 |
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|
392 |
|
|
for (x = 0; x < w; x++) |
393 |
|
|
for (y = 0; y < h; y++) |
394 |
|
|
for (i = 0; i < 3; i++) |
395 |
|
|
dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
396 |
|
|
} |
397 |
root |
1.46 |
perlinterp_acquire (); |
398 |
root |
1.26 |
OUTPUT: |
399 |
|
|
RETVAL |
400 |
|
|
|
401 |
|
|
GdkPixbuf_noinc * |
402 |
root |
1.28 |
rotate (GdkPixbuf *pb, int angle) |
403 |
root |
1.2 |
CODE: |
404 |
root |
1.46 |
perlinterp_release (); |
405 |
root |
1.44 |
if (angle < 0) |
406 |
|
|
angle += 360; |
407 |
root |
1.28 |
RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
408 |
|
|
: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
409 |
|
|
: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
410 |
|
|
: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
411 |
|
|
: angle); |
412 |
root |
1.46 |
perlinterp_acquire (); |
413 |
root |
1.2 |
OUTPUT: |
414 |
|
|
RETVAL |
415 |
|
|
|
416 |
root |
1.53 |
const char * |
417 |
|
|
filetype (SV *image_data) |
418 |
|
|
CODE: |
419 |
|
|
{ |
420 |
|
|
STRLEN data_len; |
421 |
|
|
U8 *data = SvPVbyte (image_data, data_len); |
422 |
root |
1.58 |
static const unsigned char jxl_header[] = { |
423 |
root |
1.63 |
0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a |
424 |
root |
1.58 |
}; |
425 |
root |
1.53 |
|
426 |
|
|
if (data_len >= 20 |
427 |
|
|
&& data[0] == 0xff |
428 |
|
|
&& data[1] == 0xd8 |
429 |
|
|
&& data[2] == 0xff) |
430 |
root |
1.58 |
RETVAL = "image/jpeg"; |
431 |
root |
1.53 |
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 |
root |
1.58 |
RETVAL = "image/webp"; |
441 |
root |
1.53 |
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 |
root |
1.58 |
RETVAL = "image/png"; |
451 |
|
|
else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0) |
452 |
root |
1.63 |
RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck |
453 |
|
|
else if (data_len >= 2 |
454 |
|
|
&& data[0] == 0xff |
455 |
|
|
&& data[1] == 0x0a) |
456 |
root |
1.58 |
RETVAL = "image/jxl"; |
457 |
root |
1.61 |
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 |
root |
1.62 |
|
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 |
root |
1.61 |
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 |
root |
1.53 |
else |
489 |
root |
1.58 |
XSRETURN_UNDEF; |
490 |
root |
1.53 |
} |
491 |
|
|
OUTPUT: |
492 |
|
|
RETVAL |
493 |
|
|
|
494 |
root |
1.17 |
GdkPixbuf_noinc * |
495 |
root |
1.51 |
decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
496 |
root |
1.50 |
CODE: |
497 |
|
|
{ |
498 |
|
|
#if WEBP |
499 |
|
|
STRLEN data_size; |
500 |
|
|
int alpha; |
501 |
root |
1.54 |
WebPData data; |
502 |
|
|
WebPDemuxer *demux; |
503 |
|
|
WebPIterator iter; |
504 |
|
|
WebPDecoderConfig config; |
505 |
root |
1.51 |
int inw, inh; |
506 |
|
|
|
507 |
root |
1.54 |
data.bytes = (uint8_t *)SvPVbyte (image_data, data_size); |
508 |
|
|
data.size = data_size; |
509 |
root |
1.50 |
|
510 |
|
|
perlinterp_release (); |
511 |
|
|
|
512 |
|
|
RETVAL = 0; |
513 |
|
|
|
514 |
root |
1.54 |
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 |
root |
1.50 |
|
523 |
|
|
config.options.use_threads = 1; |
524 |
|
|
|
525 |
root |
1.54 |
if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK) |
526 |
|
|
goto err_iter; |
527 |
root |
1.51 |
|
528 |
|
|
inw = config.input.width; |
529 |
|
|
inh = config.input.height; |
530 |
|
|
|
531 |
root |
1.50 |
if (thumbnail) |
532 |
|
|
{ |
533 |
root |
1.51 |
if (inw * ih > inh * iw) |
534 |
|
|
ih = (iw * inh + inw - 1) / inw; |
535 |
|
|
else |
536 |
|
|
iw = (ih * inw + inh - 1) / inh; |
537 |
|
|
|
538 |
root |
1.50 |
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 |
root |
1.51 |
iw = inw; |
548 |
|
|
ih = inh; |
549 |
root |
1.50 |
} |
550 |
|
|
|
551 |
root |
1.54 |
alpha = !!config.input.has_alpha; |
552 |
root |
1.50 |
|
553 |
root |
1.54 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih); |
554 |
root |
1.50 |
if (!RETVAL) |
555 |
root |
1.54 |
goto err_iter; |
556 |
root |
1.50 |
|
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 |
root |
1.54 |
if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK) |
564 |
root |
1.50 |
{ |
565 |
|
|
g_object_unref (RETVAL); |
566 |
|
|
RETVAL = 0; |
567 |
root |
1.54 |
goto err_iter; |
568 |
root |
1.50 |
} |
569 |
|
|
|
570 |
root |
1.54 |
err_iter: |
571 |
|
|
WebPDemuxReleaseIterator (&iter); |
572 |
|
|
err_demux: |
573 |
root |
1.55 |
WebPDemuxDelete (demux); |
574 |
root |
1.54 |
|
575 |
root |
1.50 |
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 |
root |
1.58 |
decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
585 |
|
|
CODE: |
586 |
|
|
{ |
587 |
|
|
#if JXL |
588 |
root |
1.63 |
JxlDecoder *dec; |
589 |
root |
1.58 |
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 |
root |
1.63 |
JxlDecoderStatus status; |
594 |
root |
1.58 |
void *runner = 0; |
595 |
|
|
struct bmff_box box; |
596 |
|
|
|
597 |
root |
1.63 |
RETVAL = 0; |
598 |
|
|
|
599 |
root |
1.58 |
perlinterp_release (); |
600 |
|
|
|
601 |
root |
1.63 |
dec = JxlDecoderCreate (0); |
602 |
root |
1.58 |
|
603 |
|
|
error = "JxlDecoderCreate failed"; |
604 |
|
|
if (!dec) |
605 |
|
|
goto done; |
606 |
|
|
|
607 |
|
|
runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ()); |
608 |
|
|
|
609 |
root |
1.63 |
status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner); |
610 |
root |
1.58 |
error = "JxlDecoderSetParallelRunner failed"; |
611 |
root |
1.63 |
if (status != JXL_DEC_SUCCESS) |
612 |
root |
1.58 |
goto done; |
613 |
|
|
|
614 |
|
|
error = "JxlDecoderSubscribeEvents failed"; |
615 |
root |
1.63 |
status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE); |
616 |
|
|
if (status != JXL_DEC_SUCCESS) |
617 |
root |
1.59 |
goto done; |
618 |
|
|
|
619 |
root |
1.63 |
status = JxlDecoderSetInput (dec, next_in, avail_in); |
620 |
root |
1.59 |
error = "JxlDecoderSetInput failed"; |
621 |
root |
1.63 |
if (status != JXL_DEC_SUCCESS) |
622 |
root |
1.58 |
goto done; |
623 |
|
|
|
624 |
|
|
for (;;) |
625 |
|
|
{ |
626 |
root |
1.63 |
status = JxlDecoderProcessInput (dec); |
627 |
root |
1.58 |
|
628 |
|
|
switch (status) |
629 |
|
|
{ |
630 |
root |
1.63 |
case JXL_DEC_FULL_IMAGE: |
631 |
|
|
error = 0; |
632 |
|
|
goto done; |
633 |
|
|
|
634 |
root |
1.58 |
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 |
root |
1.63 |
error = "incomplete decode"; |
644 |
root |
1.58 |
goto done; |
645 |
|
|
|
646 |
root |
1.63 |
case JXL_DEC_BASIC_INFO: |
647 |
root |
1.58 |
{ |
648 |
root |
1.63 |
status = JxlDecoderGetBasicInfo (dec, &info); |
649 |
root |
1.58 |
error = "JxlDecoderGetBasicInfo failed"; |
650 |
root |
1.63 |
if (status != JXL_DEC_SUCCESS) |
651 |
root |
1.58 |
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 |
root |
1.63 |
// 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 |
root |
1.58 |
error = "JxlDecoderSetImageOutBuffer failed"; |
678 |
root |
1.63 |
if (status != JXL_DEC_SUCCESS) |
679 |
root |
1.58 |
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 |
root |
1.63 |
croak ("load_jxl: %s (status %d)", error, status); |
704 |
root |
1.58 |
} |
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 |
root |
1.53 |
decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
714 |
root |
1.17 |
CODE: |
715 |
|
|
{ |
716 |
|
|
struct jpeg_decompress_struct cinfo; |
717 |
|
|
struct jpg_err_mgr jerr; |
718 |
|
|
int rs; |
719 |
|
|
volatile GdkPixbuf *pb = 0; |
720 |
root |
1.53 |
STRLEN data_len; |
721 |
|
|
guchar *data = SvPVbyte (image_data, data_len); |
722 |
root |
1.23 |
|
723 |
root |
1.17 |
RETVAL = 0; |
724 |
|
|
|
725 |
root |
1.46 |
perlinterp_release (); |
726 |
|
|
|
727 |
root |
1.17 |
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 |
root |
1.46 |
perlinterp_acquire (); |
740 |
root |
1.17 |
XSRETURN_UNDEF; |
741 |
|
|
} |
742 |
|
|
|
743 |
root |
1.57 |
if (!data_len) |
744 |
|
|
longjmp (jerr.setjmp_buffer, 4); |
745 |
|
|
|
746 |
root |
1.17 |
jpeg_create_decompress (&cinfo); |
747 |
root |
1.53 |
cv_jpeg_mem_src (&cinfo, data, data_len); |
748 |
root |
1.17 |
|
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 |
root |
1.47 |
&& cinfo.output_width >= iw*4 |
769 |
|
|
&& cinfo.output_height >= ih*4) |
770 |
root |
1.17 |
{ |
771 |
|
|
cinfo.scale_denom <<= 1; |
772 |
|
|
jpeg_calc_output_dimensions (&cinfo); |
773 |
|
|
} |
774 |
|
|
} |
775 |
|
|
|
776 |
root |
1.48 |
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 |
root |
1.17 |
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 |
root |
1.48 |
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 |
root |
1.49 |
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 |
root |
1.48 |
|
832 |
|
|
data += 4; |
833 |
|
|
} |
834 |
|
|
} |
835 |
|
|
|
836 |
root |
1.17 |
jpeg_finish_decompress (&cinfo); |
837 |
|
|
jpeg_destroy_decompress (&cinfo); |
838 |
root |
1.46 |
perlinterp_acquire (); |
839 |
root |
1.17 |
} |
840 |
|
|
OUTPUT: |
841 |
|
|
RETVAL |
842 |
|
|
|
843 |
root |
1.33 |
void |
844 |
|
|
compare (GdkPixbuf *a, GdkPixbuf *b) |
845 |
|
|
PPCODE: |
846 |
root |
1.46 |
perlinterp_release (); |
847 |
root |
1.33 |
{ |
848 |
|
|
int w = gdk_pixbuf_get_width (a); |
849 |
|
|
int h = gdk_pixbuf_get_height (a); |
850 |
root |
1.43 |
|
851 |
root |
1.33 |
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 |
root |
1.35 |
if (w && h) |
869 |
root |
1.34 |
for (y = 0; y < h; y++) |
870 |
|
|
{ |
871 |
|
|
guchar *pa_ = pa + y * sa; |
872 |
|
|
guchar *pb_ = pb + y * sb; |
873 |
root |
1.33 |
|
874 |
root |
1.34 |
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 |
root |
1.33 |
|
884 |
root |
1.46 |
perlinterp_acquire (); |
885 |
|
|
|
886 |
root |
1.33 |
EXTEND (SP, 2); |
887 |
|
|
PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
888 |
|
|
PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
889 |
|
|
} |
890 |
|
|
|
891 |
root |
1.6 |
############################################################################# |
892 |
|
|
|
893 |
root |
1.2 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
894 |
|
|
|
895 |
root |
1.41 |
# currently only works for filenames (octet strings) |
896 |
|
|
|
897 |
root |
1.18 |
SV * |
898 |
|
|
foldcase (SV *pathsv) |
899 |
|
|
PROTOTYPE: $ |
900 |
|
|
CODE: |
901 |
|
|
{ |
902 |
|
|
STRLEN plen; |
903 |
root |
1.41 |
U8 *path = (U8 *)SvPV (pathsv, plen); |
904 |
root |
1.18 |
U8 *pend = path + plen; |
905 |
root |
1.60 |
U8 dst [plen * 8 * 3], *dstp = dst; |
906 |
root |
1.18 |
|
907 |
|
|
while (path < pend) |
908 |
|
|
{ |
909 |
root |
1.19 |
U8 ch = *path; |
910 |
|
|
|
911 |
|
|
if (ch >= 'a' && ch <= 'z') |
912 |
|
|
*dstp++ = *path++; |
913 |
root |
1.41 |
else if (ch >= 'A' && ch <= 'Z') |
914 |
|
|
*dstp++ = *path++ + ('a' - 'A'); |
915 |
root |
1.19 |
else if (ch >= '0' && ch <= '9') |
916 |
root |
1.18 |
{ |
917 |
root |
1.60 |
/* version sort, up to 8 digits */ |
918 |
root |
1.18 |
STRLEN el, nl = 0; |
919 |
root |
1.19 |
while (*path >= '0' && *path <= '9' && path < pend) |
920 |
root |
1.18 |
path++, nl++; |
921 |
|
|
|
922 |
root |
1.60 |
for (el = nl; el < 8; el++) |
923 |
root |
1.18 |
*dstp++ = '0'; |
924 |
|
|
|
925 |
|
|
memcpy (dstp, path - nl, nl); |
926 |
|
|
dstp += nl; |
927 |
|
|
} |
928 |
|
|
else |
929 |
root |
1.41 |
*dstp++ = *path++; |
930 |
|
|
#if 0 |
931 |
|
|
else |
932 |
root |
1.18 |
{ |
933 |
|
|
STRLEN cl; |
934 |
|
|
to_utf8_fold (path, dstp, &cl); |
935 |
|
|
dstp += cl; |
936 |
|
|
path += is_utf8_char (path); |
937 |
|
|
} |
938 |
root |
1.41 |
#endif |
939 |
root |
1.18 |
} |
940 |
|
|
|
941 |
root |
1.25 |
RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
942 |
root |
1.18 |
} |
943 |
|
|
OUTPUT: |
944 |
|
|
RETVAL |
945 |
|
|
|
946 |
root |
1.3 |
GdkPixbuf_noinc * |
947 |
root |
1.24 |
p7_to_pb (int w, int h, SV *src_sv) |
948 |
root |
1.21 |
PROTOTYPE: @ |
949 |
root |
1.2 |
CODE: |
950 |
|
|
{ |
951 |
|
|
int x, y; |
952 |
|
|
guchar *dst, *d; |
953 |
|
|
int dstr; |
954 |
root |
1.25 |
guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
955 |
root |
1.2 |
|
956 |
|
|
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
957 |
|
|
dst = gdk_pixbuf_get_pixels (RETVAL); |
958 |
|
|
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
959 |
|
|
|
960 |
|
|
for (y = 0; y < h; y++) |
961 |
|
|
for (d = dst + y * dstr, x = 0; x < w; x++) |
962 |
|
|
{ |
963 |
root |
1.3 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
964 |
|
|
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
965 |
|
|
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
966 |
root |
1.2 |
|
967 |
|
|
src++; |
968 |
|
|
} |
969 |
root |
1.3 |
} |
970 |
|
|
OUTPUT: |
971 |
|
|
RETVAL |
972 |
|
|
|
973 |
root |
1.6 |
############################################################################# |
974 |
root |
1.4 |
|
975 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
976 |
|
|
|
977 |
|
|
void |
978 |
root |
1.7 |
dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
979 |
root |
1.4 |
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 |
root |
1.7 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
986 |
root |
1.4 |
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 |
root |
1.7 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
994 |
root |
1.4 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
995 |
|
|
|
996 |
|
|
a85_finish (fp); |
997 |
root |
1.7 |
} |
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 |
root |
1.4 |
} |
1016 |
root |
1.8 |
|
1017 |
|
|
############################################################################# |
1018 |
|
|
|
1019 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
1020 |
|
|
|
1021 |
|
|
SV * |
1022 |
|
|
pb_to_hv84 (GdkPixbuf *pb) |
1023 |
|
|
CODE: |
1024 |
|
|
{ |
1025 |
|
|
int w = gdk_pixbuf_get_width (pb); |
1026 |
|
|
int h = gdk_pixbuf_get_height (pb); |
1027 |
|
|
int x, y; |
1028 |
|
|
guchar *dst; |
1029 |
|
|
int bpp = gdk_pixbuf_get_n_channels (pb); |
1030 |
|
|
guchar *src = gdk_pixbuf_get_pixels (pb); |
1031 |
|
|
int sstr = gdk_pixbuf_get_rowstride (pb); |
1032 |
|
|
|
1033 |
|
|
RETVAL = newSV (6 * 8 * 12 / 8); |
1034 |
|
|
SvPOK_only (RETVAL); |
1035 |
|
|
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
1036 |
|
|
|
1037 |
root |
1.25 |
dst = (guchar *)SvPVX (RETVAL); |
1038 |
root |
1.8 |
|
1039 |
|
|
/* some primitive error distribution + random dithering */ |
1040 |
|
|
|
1041 |
|
|
for (y = 0; y < h; y++) |
1042 |
|
|
{ |
1043 |
|
|
guchar *p = src + y * sstr; |
1044 |
|
|
|
1045 |
|
|
for (x = 0; x < w; x += 2) |
1046 |
|
|
{ |
1047 |
|
|
unsigned int r, g, b, h, s, v, H, V1, V2; |
1048 |
|
|
|
1049 |
|
|
if (bpp == 3) |
1050 |
|
|
r = *p++, g = *p++, b = *p++; |
1051 |
|
|
else if (bpp == 1) |
1052 |
|
|
r = g = b = *p++; |
1053 |
|
|
else |
1054 |
|
|
abort (); |
1055 |
|
|
|
1056 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
1057 |
|
|
|
1058 |
|
|
H = (h * 15 / 255) << 4; |
1059 |
|
|
V1 = v; |
1060 |
|
|
|
1061 |
|
|
if (bpp == 3) |
1062 |
|
|
r = *p++, g = *p++, b = *p++; |
1063 |
|
|
else if (bpp == 1) |
1064 |
|
|
r = g = b = *p++; |
1065 |
|
|
else |
1066 |
|
|
abort (); |
1067 |
|
|
|
1068 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
1069 |
|
|
|
1070 |
|
|
H |= h * 15 / 255; |
1071 |
|
|
V2 = v; |
1072 |
|
|
|
1073 |
|
|
*dst++ = H; |
1074 |
|
|
*dst++ = V1; |
1075 |
|
|
*dst++ = V2; |
1076 |
|
|
} |
1077 |
|
|
} |
1078 |
|
|
} |
1079 |
|
|
OUTPUT: |
1080 |
|
|
RETVAL |
1081 |
root |
1.4 |
|
1082 |
root |
1.9 |
SV * |
1083 |
|
|
hv84_to_av (unsigned char *hv84) |
1084 |
|
|
CODE: |
1085 |
|
|
{ |
1086 |
|
|
int i = 72 / 3; |
1087 |
|
|
AV *av = newAV (); |
1088 |
|
|
|
1089 |
|
|
RETVAL = (SV *)newRV_noinc ((SV *)av); |
1090 |
|
|
while (i--) |
1091 |
|
|
{ |
1092 |
|
|
int h = *hv84++; |
1093 |
|
|
int v1 = *hv84++; |
1094 |
|
|
int v2 = *hv84++; |
1095 |
|
|
|
1096 |
|
|
av_push (av, newSViv (v1)); |
1097 |
|
|
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
1098 |
|
|
av_push (av, newSViv (v2)); |
1099 |
|
|
av_push (av, newSViv ((h & 15) * 255 / 15)); |
1100 |
|
|
} |
1101 |
|
|
} |
1102 |
|
|
OUTPUT: |
1103 |
|
|
RETVAL |
1104 |
root |
1.2 |
|
1105 |
root |
1.20 |
############################################################################# |
1106 |
|
|
|
1107 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
1108 |
|
|
|
1109 |
|
|
SV * |
1110 |
root |
1.36 |
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 |
root |
1.39 |
croak ("Not an array ref as first argument to extract_features"); |
1118 |
root |
1.36 |
|
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); |
1135 |
|
|
|
1136 |
|
|
{ |
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 |
|
|
} |
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 |
root |
1.38 |
hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
1181 |
root |
1.36 |
|
1182 |
|
|
av_push (result, histsv); |
1183 |
|
|
} |
1184 |
|
|
|
1185 |
|
|
RETVAL = newRV_noinc ((SV *)result); |
1186 |
|
|
} |
1187 |
|
|
OUTPUT: |
1188 |
|
|
RETVAL |
1189 |
|
|
|