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root |
1.1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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1.18 |
#include <string.h> |
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1.17 |
#include <setjmp.h> |
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1.33 |
#include <math.h> |
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1.17 |
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1.31 |
#include <magic.h> |
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1.17 |
#include <jpeglib.h> |
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1.53 |
#include <jerror.h> |
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1.23 |
#include <glib.h> |
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#include <gtk/gtk.h> |
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1.50 |
#include <gdk/gdkx.h> |
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1.2 |
#include <gdk-pixbuf/gdk-pixbuf.h> |
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#include <gperl.h> |
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#include <gtk2perl.h> |
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1.43 |
#include <assert.h> |
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1.50 |
#if WEBP |
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1.54 |
#include <webp/demux.h> |
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1.50 |
#include <webp/decode.h> |
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#endif |
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1.46 |
#include "perlmulticore.h" |
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1.33 |
#define IW 80 /* MUST match Schnauzer.pm! */ |
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#define IH 60 /* MUST match Schnauzer.pm! */ |
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1.5 |
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#define RAND (seed = (seed + 7141) * 54773 % 134456) |
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1.7 |
#define LINELENGTH 240 |
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1.6 |
#define ELLIPSIS "\xe2\x80\xa6" |
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1.42 |
typedef char *octet_string; |
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1.51 |
static magic_t magic_cookie[2]; /* !mime, mime */ |
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1.17 |
struct jpg_err_mgr |
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{ |
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struct jpeg_error_mgr err; |
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jmp_buf setjmp_buffer; |
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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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{ |
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1.48 |
cinfo->err->output_message (cinfo); |
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root |
1.17 |
longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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} |
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57 |
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static void |
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cv_error_output (j_common_ptr cinfo) |
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{ |
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root |
1.48 |
char msg[JMSG_LENGTH_MAX]; |
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cinfo->err->format_message (cinfo, msg); |
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fprintf (stderr, "JPEG decoding error: %s\n", msg); |
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root |
1.17 |
return; |
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} |
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static void |
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rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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unsigned int *h, unsigned int *s, unsigned int *v) |
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{ |
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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; |
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unsigned int delta = mx - mn; |
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*v = mx; |
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*s = mx ? delta * 255 / mx : 0; |
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if (delta == 0) |
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*h = 0; |
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else |
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{ |
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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) |
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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; |
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*h &= 255; |
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} |
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} |
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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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}; |
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static void |
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feature_init (struct feature *f) |
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{ |
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f->v1 = 0.; |
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f->v2 = 0.; |
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f->v3 = 0.; |
106 |
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f->n = 0; |
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} |
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// didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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// elmex ist schuld. |
111 |
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static void |
112 |
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feature_update_pass_1 (struct feature *f, unsigned int v) |
113 |
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{ |
114 |
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f->v1 += v; |
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f->n += 1; |
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} |
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118 |
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static void |
119 |
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feature_finish_pass_1 (struct feature *f) |
120 |
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{ |
121 |
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if (f->n < 1) |
122 |
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return; |
123 |
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f->v1 /= f->n; |
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} |
126 |
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127 |
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static void |
128 |
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feature_update_pass_2 (struct feature *f, unsigned int v) |
129 |
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{ |
130 |
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float d = v - f->v1; |
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132 |
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f->v2 += d * d; |
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f->v3 += d * d * d; |
134 |
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} |
135 |
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136 |
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static void |
137 |
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feature_finish_pass_2 (struct feature *f) |
138 |
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{ |
139 |
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if (f->n < 1) |
140 |
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return; |
141 |
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142 |
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f->v2 /= f->n; |
143 |
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f->v3 /= f->n; |
144 |
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145 |
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f->v1 /= 255.; |
146 |
root |
1.37 |
f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
147 |
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f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
148 |
root |
1.36 |
} |
149 |
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150 |
root |
1.4 |
static guint32 a85_val; |
151 |
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static guint a85_cnt; |
152 |
root |
1.7 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
153 |
root |
1.4 |
|
154 |
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static void |
155 |
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a85_init (void) |
156 |
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{ |
157 |
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a85_cnt = 4; |
158 |
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a85_ptr = a85_buf; |
159 |
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} |
160 |
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161 |
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static void |
162 |
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a85_push (PerlIO *fp, guchar c) |
163 |
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{ |
164 |
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a85_val = a85_val << 8 | c; |
165 |
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166 |
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if (!--a85_cnt) |
167 |
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{ |
168 |
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a85_cnt = 4; |
169 |
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if (a85_val) |
170 |
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{ |
171 |
root |
1.49 |
a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
172 |
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a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
173 |
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a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
174 |
root |
1.4 |
a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
175 |
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a85_ptr[0] = (a85_val ) + 33; |
176 |
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177 |
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a85_ptr += 5; |
178 |
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} |
179 |
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else |
180 |
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*a85_ptr++ = 'z'; |
181 |
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182 |
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if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
183 |
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{ |
184 |
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*a85_ptr++ = '\n'; |
185 |
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PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
186 |
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a85_ptr = a85_buf; |
187 |
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} |
188 |
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} |
189 |
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190 |
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} |
191 |
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192 |
root |
1.8 |
static void |
193 |
root |
1.4 |
a85_finish (PerlIO *fp) |
194 |
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{ |
195 |
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while (a85_cnt != 4) |
196 |
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a85_push (fp, 0); |
197 |
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198 |
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*a85_ptr++ = '~'; // probably buggy end-marker |
199 |
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*a85_ptr++ = '>'; // probably buggy end-marker |
200 |
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*a85_ptr++ = '\n'; |
201 |
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202 |
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PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
203 |
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} |
204 |
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205 |
root |
1.6 |
///////////////////////////////////////////////////////////////////////////// |
206 |
root |
1.56 |
// memory source for libjpeg |
207 |
root |
1.6 |
|
208 |
root |
1.53 |
static void cv_ms_init (j_decompress_ptr cinfo) |
209 |
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{ |
210 |
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} |
211 |
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212 |
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static void cv_ms_term (j_decompress_ptr cinfo) |
213 |
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{ |
214 |
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} |
215 |
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216 |
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static boolean cv_ms_fill (j_decompress_ptr cinfo) |
217 |
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{ |
218 |
root |
1.57 |
// unexpected EOF, warn and generate fake EOI marker |
219 |
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220 |
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WARNMS (cinfo, JWRN_JPEG_EOF); |
221 |
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222 |
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struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
223 |
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224 |
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static const JOCTET eoi[] = { 0xFF, JPEG_EOI }; |
225 |
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226 |
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src->next_input_byte = eoi; |
227 |
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src->bytes_in_buffer = sizeof (eoi); |
228 |
root |
1.53 |
|
229 |
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return TRUE; |
230 |
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} |
231 |
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232 |
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static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes) |
233 |
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{ |
234 |
root |
1.57 |
struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
235 |
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236 |
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src->next_input_byte += num_bytes; |
237 |
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src->bytes_in_buffer -= num_bytes; |
238 |
root |
1.53 |
} |
239 |
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240 |
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static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen) |
241 |
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{ |
242 |
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struct jpeg_source_mgr *src; |
243 |
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244 |
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if (!cinfo->src) |
245 |
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cinfo->src = (struct jpeg_source_mgr *) |
246 |
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(*cinfo->mem->alloc_small) ( |
247 |
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(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr) |
248 |
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); |
249 |
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250 |
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src = (struct jpeg_source_mgr *)cinfo->src; |
251 |
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src->init_source = cv_ms_init; |
252 |
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src->fill_input_buffer = cv_ms_fill; |
253 |
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src->skip_input_data = cv_ms_skip; |
254 |
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src->resync_to_restart = jpeg_resync_to_restart; |
255 |
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src->term_source = cv_ms_term; |
256 |
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src->next_input_byte = (JOCTET *)buf; |
257 |
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src->bytes_in_buffer = buflen; |
258 |
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} |
259 |
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260 |
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///////////////////////////////////////////////////////////////////////////// |
261 |
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262 |
root |
1.9 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
263 |
root |
1.1 |
|
264 |
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PROTOTYPES: ENABLE |
265 |
root |
1.2 |
|
266 |
root |
1.56 |
# calculate the common prefix length of two strings |
267 |
root |
1.29 |
# missing function in perl. really :) |
268 |
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int |
269 |
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common_prefix_length (a, b) |
270 |
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unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
271 |
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unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
272 |
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CODE: |
273 |
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RETVAL = 0; |
274 |
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275 |
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while (*a == *b && *a) |
276 |
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{ |
277 |
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RETVAL += (*a & 0xc0) != 0x80; |
278 |
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a++, b++; |
279 |
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} |
280 |
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281 |
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OUTPUT: |
282 |
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RETVAL |
283 |
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284 |
root |
1.31 |
const char * |
285 |
root |
1.51 |
magic (SV *path_or_data) |
286 |
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ALIAS: |
287 |
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magic = 0 |
288 |
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magic_mime = 1 |
289 |
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magic_buffer = 2 |
290 |
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magic_buffer_mime = 3 |
291 |
root |
1.31 |
CODE: |
292 |
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{ |
293 |
root |
1.51 |
STRLEN len; |
294 |
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char *data = SvPVbyte (path_or_data, len); |
295 |
root |
1.31 |
|
296 |
root |
1.51 |
if (!magic_cookie[0]) |
297 |
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{ |
298 |
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magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
299 |
root |
1.52 |
magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
300 |
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magic_load (magic_cookie[0], 0); |
301 |
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magic_load (magic_cookie[1], 0); |
302 |
root |
1.32 |
} |
303 |
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304 |
root |
1.52 |
perlinterp_release (); |
305 |
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|
306 |
root |
1.51 |
RETVAL = ix & 2 |
307 |
root |
1.52 |
? magic_buffer (magic_cookie[ix & 1], data, len) |
308 |
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: magic_file (magic_cookie[ix & 1], data); |
309 |
root |
1.32 |
|
310 |
root |
1.46 |
perlinterp_acquire (); |
311 |
root |
1.31 |
} |
312 |
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OUTPUT: |
313 |
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RETVAL |
314 |
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|
315 |
root |
1.40 |
# missing/broken in Gtk2 perl module |
316 |
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|
317 |
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void |
318 |
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gdk_window_clear_hints (GdkWindow *window) |
319 |
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CODE: |
320 |
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gdk_window_set_geometry_hints (window, 0, 0); |
321 |
root |
1.22 |
|
322 |
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gboolean |
323 |
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gdk_net_wm_supports (GdkAtom property) |
324 |
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CODE: |
325 |
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#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
326 |
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RETVAL = gdk_net_wm_supports (property); |
327 |
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#else |
328 |
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RETVAL = 0; |
329 |
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#endif |
330 |
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OUTPUT: |
331 |
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RETVAL |
332 |
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|
333 |
root |
1.3 |
GdkPixbuf_noinc * |
334 |
root |
1.26 |
dealpha_expose (GdkPixbuf *pb) |
335 |
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CODE: |
336 |
root |
1.46 |
perlinterp_release (); |
337 |
root |
1.26 |
{ |
338 |
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int w = gdk_pixbuf_get_width (pb); |
339 |
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int h = gdk_pixbuf_get_height (pb); |
340 |
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int bpp = gdk_pixbuf_get_n_channels (pb); |
341 |
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int x, y, i; |
342 |
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guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
343 |
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int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
344 |
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|
345 |
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RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
346 |
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|
347 |
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dst = gdk_pixbuf_get_pixels (RETVAL); |
348 |
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dstr = gdk_pixbuf_get_rowstride (RETVAL); |
349 |
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|
350 |
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for (x = 0; x < w; x++) |
351 |
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for (y = 0; y < h; y++) |
352 |
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for (i = 0; i < 3; i++) |
353 |
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dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
354 |
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} |
355 |
root |
1.46 |
perlinterp_acquire (); |
356 |
root |
1.26 |
OUTPUT: |
357 |
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RETVAL |
358 |
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|
359 |
|
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GdkPixbuf_noinc * |
360 |
root |
1.28 |
rotate (GdkPixbuf *pb, int angle) |
361 |
root |
1.2 |
CODE: |
362 |
root |
1.46 |
perlinterp_release (); |
363 |
root |
1.44 |
if (angle < 0) |
364 |
|
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angle += 360; |
365 |
root |
1.28 |
RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
366 |
|
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: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
367 |
|
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: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
368 |
|
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: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
369 |
|
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: angle); |
370 |
root |
1.46 |
perlinterp_acquire (); |
371 |
root |
1.2 |
OUTPUT: |
372 |
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RETVAL |
373 |
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|
374 |
root |
1.53 |
const char * |
375 |
|
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filetype (SV *image_data) |
376 |
|
|
CODE: |
377 |
|
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{ |
378 |
|
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STRLEN data_len; |
379 |
|
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U8 *data = SvPVbyte (image_data, data_len); |
380 |
|
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|
381 |
|
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if (data_len >= 20 |
382 |
|
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&& data[0] == 0xff |
383 |
|
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&& data[1] == 0xd8 |
384 |
|
|
&& data[2] == 0xff) |
385 |
|
|
RETVAL = "jpg"; |
386 |
|
|
else if (data_len >= 12 |
387 |
|
|
&& data[ 0] == (U8)'R' |
388 |
|
|
&& data[ 1] == (U8)'I' |
389 |
|
|
&& data[ 2] == (U8)'F' |
390 |
|
|
&& data[ 3] == (U8)'F' |
391 |
|
|
&& data[ 8] == (U8)'W' |
392 |
|
|
&& data[ 9] == (U8)'E' |
393 |
|
|
&& data[10] == (U8)'B' |
394 |
|
|
&& data[11] == (U8)'P') |
395 |
|
|
RETVAL = "webp"; |
396 |
|
|
else if (data_len >= 16 |
397 |
|
|
&& data[ 0] == 0x89 |
398 |
|
|
&& data[ 1] == (U8)'P' |
399 |
|
|
&& data[ 2] == (U8)'N' |
400 |
|
|
&& data[ 3] == (U8)'G' |
401 |
|
|
&& data[ 4] == 0x0d |
402 |
|
|
&& data[ 5] == 0x0a |
403 |
|
|
&& data[ 6] == 0x1a |
404 |
|
|
&& data[ 7] == 0x0a) |
405 |
|
|
RETVAL = "png"; |
406 |
|
|
else |
407 |
|
|
RETVAL = "other"; |
408 |
|
|
} |
409 |
|
|
OUTPUT: |
410 |
|
|
RETVAL |
411 |
|
|
|
412 |
root |
1.17 |
GdkPixbuf_noinc * |
413 |
root |
1.51 |
decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
414 |
root |
1.50 |
CODE: |
415 |
|
|
{ |
416 |
|
|
#if WEBP |
417 |
|
|
STRLEN data_size; |
418 |
|
|
int alpha; |
419 |
root |
1.54 |
WebPData data; |
420 |
|
|
WebPDemuxer *demux; |
421 |
|
|
WebPIterator iter; |
422 |
|
|
WebPDecoderConfig config; |
423 |
root |
1.51 |
int inw, inh; |
424 |
|
|
|
425 |
root |
1.54 |
data.bytes = (uint8_t *)SvPVbyte (image_data, data_size); |
426 |
|
|
data.size = data_size; |
427 |
root |
1.50 |
|
428 |
|
|
perlinterp_release (); |
429 |
|
|
|
430 |
|
|
RETVAL = 0; |
431 |
|
|
|
432 |
root |
1.54 |
if (!(demux = WebPDemux (&data))) |
433 |
|
|
goto err_demux; |
434 |
|
|
|
435 |
|
|
if (!WebPDemuxGetFrame (demux, 1, &iter)) |
436 |
|
|
goto err_iter; |
437 |
|
|
|
438 |
|
|
if (!WebPInitDecoderConfig (&config)) |
439 |
|
|
goto err_iter; |
440 |
root |
1.50 |
|
441 |
|
|
config.options.use_threads = 1; |
442 |
|
|
|
443 |
root |
1.54 |
if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK) |
444 |
|
|
goto err_iter; |
445 |
root |
1.51 |
|
446 |
|
|
inw = config.input.width; |
447 |
|
|
inh = config.input.height; |
448 |
|
|
|
449 |
root |
1.50 |
if (thumbnail) |
450 |
|
|
{ |
451 |
root |
1.51 |
if (inw * ih > inh * iw) |
452 |
|
|
ih = (iw * inh + inw - 1) / inw; |
453 |
|
|
else |
454 |
|
|
iw = (ih * inw + inh - 1) / inh; |
455 |
|
|
|
456 |
root |
1.50 |
config.options.bypass_filtering = 1; |
457 |
|
|
config.options.no_fancy_upsampling = 1; |
458 |
|
|
|
459 |
|
|
config.options.use_scaling = 1; |
460 |
|
|
config.options.scaled_width = iw; |
461 |
|
|
config.options.scaled_height = ih; |
462 |
|
|
} |
463 |
|
|
else |
464 |
|
|
{ |
465 |
root |
1.51 |
iw = inw; |
466 |
|
|
ih = inh; |
467 |
root |
1.50 |
} |
468 |
|
|
|
469 |
root |
1.54 |
alpha = !!config.input.has_alpha; |
470 |
root |
1.50 |
|
471 |
root |
1.54 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih); |
472 |
root |
1.50 |
if (!RETVAL) |
473 |
root |
1.54 |
goto err_iter; |
474 |
root |
1.50 |
|
475 |
|
|
config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; |
476 |
|
|
config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); |
477 |
|
|
config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); |
478 |
|
|
config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); |
479 |
|
|
config.output.is_external_memory = 1; |
480 |
|
|
|
481 |
root |
1.54 |
if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK) |
482 |
root |
1.50 |
{ |
483 |
|
|
g_object_unref (RETVAL); |
484 |
|
|
RETVAL = 0; |
485 |
root |
1.54 |
goto err_iter; |
486 |
root |
1.50 |
} |
487 |
|
|
|
488 |
root |
1.54 |
err_iter: |
489 |
|
|
WebPDemuxReleaseIterator (&iter); |
490 |
|
|
err_demux: |
491 |
root |
1.55 |
WebPDemuxDelete (demux); |
492 |
root |
1.54 |
|
493 |
root |
1.50 |
perlinterp_acquire (); |
494 |
|
|
#else |
495 |
|
|
croak ("load_webp: webp not enabled at compile time"); |
496 |
|
|
#endif |
497 |
|
|
} |
498 |
|
|
OUTPUT: |
499 |
|
|
RETVAL |
500 |
|
|
|
501 |
|
|
GdkPixbuf_noinc * |
502 |
root |
1.53 |
decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
503 |
root |
1.17 |
CODE: |
504 |
|
|
{ |
505 |
|
|
struct jpeg_decompress_struct cinfo; |
506 |
|
|
struct jpg_err_mgr jerr; |
507 |
|
|
int rs; |
508 |
|
|
volatile GdkPixbuf *pb = 0; |
509 |
root |
1.53 |
STRLEN data_len; |
510 |
|
|
guchar *data = SvPVbyte (image_data, data_len); |
511 |
root |
1.23 |
|
512 |
root |
1.17 |
RETVAL = 0; |
513 |
|
|
|
514 |
root |
1.46 |
perlinterp_release (); |
515 |
|
|
|
516 |
root |
1.17 |
cinfo.err = jpeg_std_error (&jerr.err); |
517 |
|
|
|
518 |
|
|
jerr.err.error_exit = cv_error_exit; |
519 |
|
|
jerr.err.output_message = cv_error_output; |
520 |
|
|
|
521 |
|
|
if ((rs = setjmp (jerr.setjmp_buffer))) |
522 |
|
|
{ |
523 |
|
|
jpeg_destroy_decompress (&cinfo); |
524 |
|
|
|
525 |
|
|
if (pb) |
526 |
|
|
g_object_unref ((gpointer)pb); |
527 |
|
|
|
528 |
root |
1.46 |
perlinterp_acquire (); |
529 |
root |
1.17 |
XSRETURN_UNDEF; |
530 |
|
|
} |
531 |
|
|
|
532 |
root |
1.57 |
if (!data_len) |
533 |
|
|
longjmp (jerr.setjmp_buffer, 4); |
534 |
|
|
|
535 |
root |
1.17 |
jpeg_create_decompress (&cinfo); |
536 |
root |
1.53 |
cv_jpeg_mem_src (&cinfo, data, data_len); |
537 |
root |
1.17 |
|
538 |
|
|
jpeg_read_header (&cinfo, TRUE); |
539 |
|
|
|
540 |
|
|
cinfo.dct_method = JDCT_DEFAULT; |
541 |
|
|
cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
542 |
|
|
cinfo.do_block_smoothing = FALSE; |
543 |
|
|
cinfo.out_color_space = JCS_RGB; |
544 |
|
|
cinfo.quantize_colors = FALSE; |
545 |
|
|
|
546 |
|
|
cinfo.scale_num = 1; |
547 |
|
|
cinfo.scale_denom = 1; |
548 |
|
|
|
549 |
|
|
jpeg_calc_output_dimensions (&cinfo); |
550 |
|
|
|
551 |
|
|
if (thumbnail) |
552 |
|
|
{ |
553 |
|
|
cinfo.dct_method = JDCT_FASTEST; |
554 |
|
|
cinfo.do_fancy_upsampling = FALSE; |
555 |
|
|
|
556 |
|
|
while (cinfo.scale_denom < 8 |
557 |
root |
1.47 |
&& cinfo.output_width >= iw*4 |
558 |
|
|
&& cinfo.output_height >= ih*4) |
559 |
root |
1.17 |
{ |
560 |
|
|
cinfo.scale_denom <<= 1; |
561 |
|
|
jpeg_calc_output_dimensions (&cinfo); |
562 |
|
|
} |
563 |
|
|
} |
564 |
|
|
|
565 |
root |
1.48 |
if (cinfo.output_components != 3) |
566 |
|
|
longjmp (jerr.setjmp_buffer, 3); |
567 |
|
|
|
568 |
|
|
if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) |
569 |
|
|
{ |
570 |
|
|
cinfo.out_color_space = JCS_CMYK; |
571 |
|
|
cinfo.output_components = 4; |
572 |
|
|
} |
573 |
|
|
|
574 |
|
|
pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
575 |
root |
1.17 |
if (!RETVAL) |
576 |
|
|
longjmp (jerr.setjmp_buffer, 2); |
577 |
|
|
|
578 |
|
|
data = gdk_pixbuf_get_pixels (RETVAL); |
579 |
|
|
rs = gdk_pixbuf_get_rowstride (RETVAL); |
580 |
|
|
|
581 |
|
|
jpeg_start_decompress (&cinfo); |
582 |
|
|
|
583 |
|
|
while (cinfo.output_scanline < cinfo.output_height) |
584 |
|
|
{ |
585 |
|
|
int remaining = cinfo.output_height - cinfo.output_scanline; |
586 |
|
|
JSAMPROW rp[4]; |
587 |
|
|
|
588 |
|
|
rp [0] = data + cinfo.output_scanline * rs; |
589 |
|
|
rp [1] = (guchar *)rp [0] + rs; |
590 |
|
|
rp [2] = (guchar *)rp [1] + rs; |
591 |
|
|
rp [3] = (guchar *)rp [2] + rs; |
592 |
|
|
|
593 |
|
|
jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
594 |
|
|
} |
595 |
|
|
|
596 |
root |
1.48 |
if (cinfo.out_color_space == JCS_CMYK) |
597 |
|
|
{ |
598 |
|
|
guchar *end = data + cinfo.output_height * rs; |
599 |
|
|
|
600 |
|
|
while (data < end) |
601 |
|
|
{ |
602 |
|
|
U32 c = data [0]; |
603 |
|
|
U32 m = data [1]; |
604 |
|
|
U32 y = data [2]; |
605 |
|
|
U32 k = data [3]; |
606 |
|
|
|
607 |
root |
1.49 |
if (0) |
608 |
|
|
if (cinfo.Adobe_transform == 2) |
609 |
|
|
{ |
610 |
|
|
c ^= 0xff; |
611 |
|
|
m ^= 0xff; |
612 |
|
|
y ^= 0xff; |
613 |
|
|
k ^= 0xff; |
614 |
|
|
} |
615 |
|
|
|
616 |
|
|
data [0] = (c * k + 0x80) / 0xff; |
617 |
|
|
data [1] = (m * k + 0x80) / 0xff; |
618 |
|
|
data [2] = (y * k + 0x80) / 0xff; |
619 |
|
|
data [3] = 0xff; |
620 |
root |
1.48 |
|
621 |
|
|
data += 4; |
622 |
|
|
} |
623 |
|
|
} |
624 |
|
|
|
625 |
root |
1.17 |
jpeg_finish_decompress (&cinfo); |
626 |
|
|
jpeg_destroy_decompress (&cinfo); |
627 |
root |
1.46 |
perlinterp_acquire (); |
628 |
root |
1.17 |
} |
629 |
|
|
OUTPUT: |
630 |
|
|
RETVAL |
631 |
|
|
|
632 |
root |
1.33 |
void |
633 |
|
|
compare (GdkPixbuf *a, GdkPixbuf *b) |
634 |
|
|
PPCODE: |
635 |
root |
1.46 |
perlinterp_release (); |
636 |
root |
1.33 |
{ |
637 |
|
|
int w = gdk_pixbuf_get_width (a); |
638 |
|
|
int h = gdk_pixbuf_get_height (a); |
639 |
root |
1.43 |
|
640 |
root |
1.33 |
int sa = gdk_pixbuf_get_rowstride (a); |
641 |
|
|
int sb = gdk_pixbuf_get_rowstride (b); |
642 |
|
|
|
643 |
|
|
guchar *pa = gdk_pixbuf_get_pixels (a); |
644 |
|
|
guchar *pb = gdk_pixbuf_get_pixels (b); |
645 |
|
|
|
646 |
|
|
int x, y; |
647 |
|
|
|
648 |
|
|
assert (w == gdk_pixbuf_get_width (b)); |
649 |
|
|
assert (h == gdk_pixbuf_get_height (b)); |
650 |
|
|
|
651 |
|
|
assert (gdk_pixbuf_get_n_channels (a) == 3); |
652 |
|
|
assert (gdk_pixbuf_get_n_channels (b) == 3); |
653 |
|
|
|
654 |
|
|
double diff = 0.; |
655 |
|
|
int peak = 0; |
656 |
|
|
|
657 |
root |
1.35 |
if (w && h) |
658 |
root |
1.34 |
for (y = 0; y < h; y++) |
659 |
|
|
{ |
660 |
|
|
guchar *pa_ = pa + y * sa; |
661 |
|
|
guchar *pb_ = pb + y * sb; |
662 |
root |
1.33 |
|
663 |
root |
1.34 |
for (x = 0; x < w; x++) |
664 |
|
|
{ |
665 |
|
|
int d; |
666 |
|
|
|
667 |
|
|
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
668 |
|
|
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
669 |
|
|
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
670 |
|
|
} |
671 |
|
|
} |
672 |
root |
1.33 |
|
673 |
root |
1.46 |
perlinterp_acquire (); |
674 |
|
|
|
675 |
root |
1.33 |
EXTEND (SP, 2); |
676 |
|
|
PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
677 |
|
|
PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
678 |
|
|
} |
679 |
|
|
|
680 |
root |
1.6 |
############################################################################# |
681 |
|
|
|
682 |
root |
1.2 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
683 |
|
|
|
684 |
root |
1.41 |
# currently only works for filenames (octet strings) |
685 |
|
|
|
686 |
root |
1.18 |
SV * |
687 |
|
|
foldcase (SV *pathsv) |
688 |
|
|
PROTOTYPE: $ |
689 |
|
|
CODE: |
690 |
|
|
{ |
691 |
|
|
STRLEN plen; |
692 |
root |
1.41 |
U8 *path = (U8 *)SvPV (pathsv, plen); |
693 |
root |
1.18 |
U8 *pend = path + plen; |
694 |
|
|
U8 dst [plen * 6 * 3], *dstp = dst; |
695 |
|
|
|
696 |
|
|
while (path < pend) |
697 |
|
|
{ |
698 |
root |
1.19 |
U8 ch = *path; |
699 |
|
|
|
700 |
|
|
if (ch >= 'a' && ch <= 'z') |
701 |
|
|
*dstp++ = *path++; |
702 |
root |
1.41 |
else if (ch >= 'A' && ch <= 'Z') |
703 |
|
|
*dstp++ = *path++ + ('a' - 'A'); |
704 |
root |
1.19 |
else if (ch >= '0' && ch <= '9') |
705 |
root |
1.18 |
{ |
706 |
|
|
STRLEN el, nl = 0; |
707 |
root |
1.19 |
while (*path >= '0' && *path <= '9' && path < pend) |
708 |
root |
1.18 |
path++, nl++; |
709 |
|
|
|
710 |
|
|
for (el = nl; el < 6; el++) |
711 |
|
|
*dstp++ = '0'; |
712 |
|
|
|
713 |
|
|
memcpy (dstp, path - nl, nl); |
714 |
|
|
dstp += nl; |
715 |
|
|
} |
716 |
|
|
else |
717 |
root |
1.41 |
*dstp++ = *path++; |
718 |
|
|
#if 0 |
719 |
|
|
else |
720 |
root |
1.18 |
{ |
721 |
|
|
STRLEN cl; |
722 |
|
|
to_utf8_fold (path, dstp, &cl); |
723 |
|
|
dstp += cl; |
724 |
|
|
path += is_utf8_char (path); |
725 |
|
|
} |
726 |
root |
1.41 |
#endif |
727 |
root |
1.18 |
} |
728 |
|
|
|
729 |
root |
1.25 |
RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
730 |
root |
1.18 |
} |
731 |
|
|
OUTPUT: |
732 |
|
|
RETVAL |
733 |
|
|
|
734 |
root |
1.3 |
GdkPixbuf_noinc * |
735 |
root |
1.24 |
p7_to_pb (int w, int h, SV *src_sv) |
736 |
root |
1.21 |
PROTOTYPE: @ |
737 |
root |
1.2 |
CODE: |
738 |
|
|
{ |
739 |
|
|
int x, y; |
740 |
|
|
guchar *dst, *d; |
741 |
|
|
int dstr; |
742 |
root |
1.25 |
guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
743 |
root |
1.2 |
|
744 |
|
|
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
745 |
|
|
dst = gdk_pixbuf_get_pixels (RETVAL); |
746 |
|
|
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
747 |
|
|
|
748 |
|
|
for (y = 0; y < h; y++) |
749 |
|
|
for (d = dst + y * dstr, x = 0; x < w; x++) |
750 |
|
|
{ |
751 |
root |
1.3 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
752 |
|
|
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
753 |
|
|
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
754 |
root |
1.2 |
|
755 |
|
|
src++; |
756 |
|
|
} |
757 |
root |
1.3 |
} |
758 |
|
|
OUTPUT: |
759 |
|
|
RETVAL |
760 |
|
|
|
761 |
root |
1.6 |
############################################################################# |
762 |
root |
1.4 |
|
763 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
764 |
|
|
|
765 |
|
|
void |
766 |
root |
1.7 |
dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
767 |
root |
1.4 |
CODE: |
768 |
|
|
{ |
769 |
|
|
int w = gdk_pixbuf_get_width (pb); |
770 |
|
|
int h = gdk_pixbuf_get_height (pb); |
771 |
|
|
int x, y, i; |
772 |
|
|
guchar *dst; |
773 |
root |
1.7 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
774 |
root |
1.4 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
775 |
|
|
int sstr = gdk_pixbuf_get_rowstride (pb); |
776 |
|
|
|
777 |
|
|
a85_init (); |
778 |
|
|
|
779 |
|
|
for (y = 0; y < h; y++) |
780 |
|
|
for (x = 0; x < w; x++) |
781 |
root |
1.7 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
782 |
root |
1.4 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
783 |
|
|
|
784 |
|
|
a85_finish (fp); |
785 |
root |
1.7 |
} |
786 |
|
|
|
787 |
|
|
void |
788 |
|
|
dump_binary (PerlIO *fp, GdkPixbuf *pb) |
789 |
|
|
CODE: |
790 |
|
|
{ |
791 |
|
|
int w = gdk_pixbuf_get_width (pb); |
792 |
|
|
int h = gdk_pixbuf_get_height (pb); |
793 |
|
|
int x, y, i; |
794 |
|
|
guchar *dst; |
795 |
|
|
int bpp = gdk_pixbuf_get_n_channels (pb); |
796 |
|
|
guchar *src = gdk_pixbuf_get_pixels (pb); |
797 |
|
|
int sstr = gdk_pixbuf_get_rowstride (pb); |
798 |
|
|
|
799 |
|
|
for (y = 0; y < h; y++) |
800 |
|
|
for (x = 0; x < w; x++) |
801 |
|
|
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
802 |
|
|
PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
803 |
root |
1.4 |
} |
804 |
root |
1.8 |
|
805 |
|
|
############################################################################# |
806 |
|
|
|
807 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
808 |
|
|
|
809 |
|
|
SV * |
810 |
|
|
pb_to_hv84 (GdkPixbuf *pb) |
811 |
|
|
CODE: |
812 |
|
|
{ |
813 |
|
|
int w = gdk_pixbuf_get_width (pb); |
814 |
|
|
int h = gdk_pixbuf_get_height (pb); |
815 |
|
|
int x, y; |
816 |
|
|
guchar *dst; |
817 |
|
|
int bpp = gdk_pixbuf_get_n_channels (pb); |
818 |
|
|
guchar *src = gdk_pixbuf_get_pixels (pb); |
819 |
|
|
int sstr = gdk_pixbuf_get_rowstride (pb); |
820 |
|
|
|
821 |
|
|
RETVAL = newSV (6 * 8 * 12 / 8); |
822 |
|
|
SvPOK_only (RETVAL); |
823 |
|
|
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
824 |
|
|
|
825 |
root |
1.25 |
dst = (guchar *)SvPVX (RETVAL); |
826 |
root |
1.8 |
|
827 |
|
|
/* some primitive error distribution + random dithering */ |
828 |
|
|
|
829 |
|
|
for (y = 0; y < h; y++) |
830 |
|
|
{ |
831 |
|
|
guchar *p = src + y * sstr; |
832 |
|
|
|
833 |
|
|
for (x = 0; x < w; x += 2) |
834 |
|
|
{ |
835 |
|
|
unsigned int r, g, b, h, s, v, H, V1, V2; |
836 |
|
|
|
837 |
|
|
if (bpp == 3) |
838 |
|
|
r = *p++, g = *p++, b = *p++; |
839 |
|
|
else if (bpp == 1) |
840 |
|
|
r = g = b = *p++; |
841 |
|
|
else |
842 |
|
|
abort (); |
843 |
|
|
|
844 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
845 |
|
|
|
846 |
|
|
H = (h * 15 / 255) << 4; |
847 |
|
|
V1 = v; |
848 |
|
|
|
849 |
|
|
if (bpp == 3) |
850 |
|
|
r = *p++, g = *p++, b = *p++; |
851 |
|
|
else if (bpp == 1) |
852 |
|
|
r = g = b = *p++; |
853 |
|
|
else |
854 |
|
|
abort (); |
855 |
|
|
|
856 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
857 |
|
|
|
858 |
|
|
H |= h * 15 / 255; |
859 |
|
|
V2 = v; |
860 |
|
|
|
861 |
|
|
*dst++ = H; |
862 |
|
|
*dst++ = V1; |
863 |
|
|
*dst++ = V2; |
864 |
|
|
} |
865 |
|
|
} |
866 |
|
|
} |
867 |
|
|
OUTPUT: |
868 |
|
|
RETVAL |
869 |
root |
1.4 |
|
870 |
root |
1.9 |
SV * |
871 |
|
|
hv84_to_av (unsigned char *hv84) |
872 |
|
|
CODE: |
873 |
|
|
{ |
874 |
|
|
int i = 72 / 3; |
875 |
|
|
AV *av = newAV (); |
876 |
|
|
|
877 |
|
|
RETVAL = (SV *)newRV_noinc ((SV *)av); |
878 |
|
|
while (i--) |
879 |
|
|
{ |
880 |
|
|
int h = *hv84++; |
881 |
|
|
int v1 = *hv84++; |
882 |
|
|
int v2 = *hv84++; |
883 |
|
|
|
884 |
|
|
av_push (av, newSViv (v1)); |
885 |
|
|
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
886 |
|
|
av_push (av, newSViv (v2)); |
887 |
|
|
av_push (av, newSViv ((h & 15) * 255 / 15)); |
888 |
|
|
} |
889 |
|
|
} |
890 |
|
|
OUTPUT: |
891 |
|
|
RETVAL |
892 |
root |
1.2 |
|
893 |
root |
1.20 |
############################################################################# |
894 |
|
|
|
895 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
896 |
|
|
|
897 |
|
|
SV * |
898 |
root |
1.36 |
extract_features (SV *ar) |
899 |
|
|
CODE: |
900 |
|
|
{ |
901 |
|
|
int i; |
902 |
|
|
AV *av, *result; |
903 |
|
|
|
904 |
|
|
if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
905 |
root |
1.39 |
croak ("Not an array ref as first argument to extract_features"); |
906 |
root |
1.36 |
|
907 |
|
|
av = (AV *) SvRV (ar); |
908 |
|
|
result = newAV (); |
909 |
|
|
|
910 |
|
|
for (i = 0; i <= av_len (av); ++i) |
911 |
|
|
{ |
912 |
|
|
SV *sv = *av_fetch (av, i, 1); |
913 |
|
|
SV *histsv = newSV (9 * sizeof (float) + 1); |
914 |
|
|
|
915 |
|
|
SvPOK_on (histsv); |
916 |
|
|
SvCUR_set (histsv, 9 * sizeof (float)); |
917 |
|
|
float *hist = (float *)SvPVX (histsv); |
918 |
|
|
|
919 |
|
|
struct feature f_h, f_s, f_v; |
920 |
|
|
feature_init (&f_h); |
921 |
|
|
feature_init (&f_s); |
922 |
|
|
feature_init (&f_v); |
923 |
|
|
|
924 |
|
|
{ |
925 |
|
|
STRLEN len; |
926 |
|
|
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
927 |
|
|
while (len >= 3) |
928 |
|
|
{ |
929 |
|
|
unsigned int r, g, b, h, s, v; |
930 |
|
|
r = *buf++; g = *buf++; b = *buf++; |
931 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
932 |
|
|
|
933 |
|
|
feature_update_pass_1 (&f_h, h); |
934 |
|
|
feature_update_pass_1 (&f_s, s); |
935 |
|
|
feature_update_pass_1 (&f_v, v); |
936 |
|
|
|
937 |
|
|
len -= 3; |
938 |
|
|
} |
939 |
|
|
|
940 |
|
|
feature_finish_pass_1 (&f_h); |
941 |
|
|
feature_finish_pass_1 (&f_s); |
942 |
|
|
feature_finish_pass_1 (&f_v); |
943 |
|
|
} |
944 |
|
|
|
945 |
|
|
{ |
946 |
|
|
STRLEN len; |
947 |
|
|
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
948 |
|
|
while (len >= 3) |
949 |
|
|
{ |
950 |
|
|
unsigned int r, g, b, h, s, v; |
951 |
|
|
r = *buf++; g = *buf++; b = *buf++; |
952 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
953 |
|
|
|
954 |
|
|
feature_update_pass_2 (&f_h, h); |
955 |
|
|
feature_update_pass_2 (&f_s, s); |
956 |
|
|
feature_update_pass_2 (&f_v, v); |
957 |
|
|
|
958 |
|
|
len -= 3; |
959 |
|
|
} |
960 |
|
|
|
961 |
|
|
feature_finish_pass_2 (&f_h); |
962 |
|
|
feature_finish_pass_2 (&f_s); |
963 |
|
|
feature_finish_pass_2 (&f_v); |
964 |
|
|
} |
965 |
|
|
|
966 |
|
|
hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
967 |
|
|
hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
968 |
root |
1.38 |
hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
969 |
root |
1.36 |
|
970 |
|
|
av_push (result, histsv); |
971 |
|
|
} |
972 |
|
|
|
973 |
|
|
RETVAL = newRV_noinc ((SV *)result); |
974 |
|
|
} |
975 |
|
|
OUTPUT: |
976 |
|
|
RETVAL |
977 |
|
|
|