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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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root |
1.18 |
#include <string.h> |
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1.17 |
#include <setjmp.h> |
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root |
1.33 |
#include <math.h> |
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root |
1.17 |
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root |
1.31 |
#include <magic.h> |
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1.17 |
#include <jpeglib.h> |
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1.23 |
#include <glib.h> |
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#include <gtk/gtk.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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1.33 |
#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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1.17 |
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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longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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} |
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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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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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1.4 |
static guint32 a85_val; |
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static guint a85_cnt; |
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1.7 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
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1.4 |
|
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static void |
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a85_init (void) |
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{ |
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a85_cnt = 4; |
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a85_ptr = a85_buf; |
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} |
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static void |
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a85_push (PerlIO *fp, guchar c) |
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{ |
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a85_val = a85_val << 8 | c; |
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if (!--a85_cnt) |
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{ |
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a85_cnt = 4; |
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if (a85_val) |
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{ |
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a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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a85_ptr[0] = (a85_val ) + 33; |
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a85_ptr += 5; |
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} |
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else |
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*a85_ptr++ = 'z'; |
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if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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{ |
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*a85_ptr++ = '\n'; |
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PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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a85_ptr = a85_buf; |
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} |
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} |
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} |
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root |
1.8 |
static void |
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root |
1.4 |
a85_finish (PerlIO *fp) |
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{ |
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while (a85_cnt != 4) |
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a85_push (fp, 0); |
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*a85_ptr++ = '~'; // probably buggy end-marker |
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*a85_ptr++ = '>'; // probably buggy end-marker |
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*a85_ptr++ = '\n'; |
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PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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} |
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128 |
root |
1.6 |
///////////////////////////////////////////////////////////////////////////// |
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130 |
root |
1.9 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
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root |
1.1 |
|
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PROTOTYPES: ENABLE |
133 |
root |
1.2 |
|
134 |
root |
1.29 |
# missing function in perl. really :) |
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int |
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common_prefix_length (a, b) |
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unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
139 |
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CODE: |
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RETVAL = 0; |
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142 |
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while (*a == *b && *a) |
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{ |
144 |
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RETVAL += (*a & 0xc0) != 0x80; |
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a++, b++; |
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} |
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148 |
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OUTPUT: |
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RETVAL |
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151 |
root |
1.31 |
const char * |
152 |
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magic (const char *path) |
153 |
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CODE: |
154 |
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{ |
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static magic_t cookie; |
156 |
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157 |
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if (!cookie) |
158 |
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{ |
159 |
root |
1.32 |
cookie = magic_open (MAGIC_NONE); |
160 |
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161 |
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if (cookie) |
162 |
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magic_load (cookie, 0); |
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else |
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XSRETURN_UNDEF; |
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} |
166 |
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167 |
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RETVAL = magic_file (cookie, path); |
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} |
169 |
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OUTPUT: |
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RETVAL |
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172 |
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const char * |
173 |
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magic_mime (const char *path) |
174 |
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CODE: |
175 |
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{ |
176 |
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static magic_t cookie; |
177 |
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178 |
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if (!cookie) |
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{ |
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root |
1.31 |
cookie = magic_open (MAGIC_MIME); |
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182 |
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if (cookie) |
183 |
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magic_load (cookie, 0); |
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else |
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XSRETURN_UNDEF; |
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} |
187 |
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188 |
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RETVAL = magic_file (cookie, path); |
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} |
190 |
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OUTPUT: |
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RETVAL |
192 |
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193 |
root |
1.22 |
# missing in Gtk2 perl module |
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gboolean |
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gdk_net_wm_supports (GdkAtom property) |
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CODE: |
198 |
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#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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RETVAL = gdk_net_wm_supports (property); |
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#else |
201 |
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RETVAL = 0; |
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#endif |
203 |
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OUTPUT: |
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RETVAL |
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206 |
root |
1.3 |
GdkPixbuf_noinc * |
207 |
root |
1.26 |
dealpha_expose (GdkPixbuf *pb) |
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CODE: |
209 |
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{ |
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int w = gdk_pixbuf_get_width (pb); |
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int h = gdk_pixbuf_get_height (pb); |
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int bpp = gdk_pixbuf_get_n_channels (pb); |
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int x, y, i; |
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guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
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int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
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217 |
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RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
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dst = gdk_pixbuf_get_pixels (RETVAL); |
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dstr = gdk_pixbuf_get_rowstride (RETVAL); |
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for (x = 0; x < w; x++) |
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for (y = 0; y < h; y++) |
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for (i = 0; i < 3; i++) |
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dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
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} |
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OUTPUT: |
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RETVAL |
229 |
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230 |
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GdkPixbuf_noinc * |
231 |
root |
1.28 |
rotate (GdkPixbuf *pb, int angle) |
232 |
root |
1.2 |
CODE: |
233 |
root |
1.28 |
RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
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: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
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: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
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: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
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: angle); |
238 |
root |
1.2 |
OUTPUT: |
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RETVAL |
240 |
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241 |
root |
1.17 |
GdkPixbuf_noinc * |
242 |
root |
1.23 |
load_jpeg (SV *path, int thumbnail=0) |
243 |
root |
1.17 |
CODE: |
244 |
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{ |
245 |
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struct jpeg_decompress_struct cinfo; |
246 |
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struct jpg_err_mgr jerr; |
247 |
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guchar *data; |
248 |
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int rs; |
249 |
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FILE *fp; |
250 |
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volatile GdkPixbuf *pb = 0; |
251 |
root |
1.23 |
|
252 |
root |
1.17 |
RETVAL = 0; |
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254 |
root |
1.30 |
fp = fopen (SvPVbyte_nolen (path), "rb"); |
255 |
root |
1.23 |
|
256 |
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if (!fp) |
257 |
root |
1.17 |
XSRETURN_UNDEF; |
258 |
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259 |
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cinfo.err = jpeg_std_error (&jerr.err); |
260 |
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261 |
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jerr.err.error_exit = cv_error_exit; |
262 |
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jerr.err.output_message = cv_error_output; |
263 |
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264 |
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if ((rs = setjmp (jerr.setjmp_buffer))) |
265 |
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{ |
266 |
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fclose (fp); |
267 |
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jpeg_destroy_decompress (&cinfo); |
268 |
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269 |
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if (pb) |
270 |
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g_object_unref ((gpointer)pb); |
271 |
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272 |
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XSRETURN_UNDEF; |
273 |
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} |
274 |
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275 |
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jpeg_create_decompress (&cinfo); |
276 |
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277 |
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jpeg_stdio_src (&cinfo, fp); |
278 |
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jpeg_read_header (&cinfo, TRUE); |
279 |
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280 |
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cinfo.dct_method = JDCT_DEFAULT; |
281 |
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cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
282 |
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cinfo.do_block_smoothing = FALSE; |
283 |
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cinfo.out_color_space = JCS_RGB; |
284 |
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cinfo.quantize_colors = FALSE; |
285 |
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286 |
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cinfo.scale_num = 1; |
287 |
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cinfo.scale_denom = 1; |
288 |
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289 |
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jpeg_calc_output_dimensions (&cinfo); |
290 |
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291 |
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if (thumbnail) |
292 |
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{ |
293 |
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cinfo.dct_method = JDCT_FASTEST; |
294 |
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cinfo.do_fancy_upsampling = FALSE; |
295 |
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296 |
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while (cinfo.scale_denom < 8 |
297 |
root |
1.21 |
&& cinfo.output_width >= IW*4 |
298 |
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&& cinfo.output_height >= IH*4) |
299 |
root |
1.17 |
{ |
300 |
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cinfo.scale_denom <<= 1; |
301 |
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jpeg_calc_output_dimensions (&cinfo); |
302 |
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} |
303 |
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} |
304 |
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305 |
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pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
306 |
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if (!RETVAL) |
307 |
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longjmp (jerr.setjmp_buffer, 2); |
308 |
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309 |
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data = gdk_pixbuf_get_pixels (RETVAL); |
310 |
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rs = gdk_pixbuf_get_rowstride (RETVAL); |
311 |
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312 |
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if (cinfo.output_components != 3) |
313 |
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longjmp (jerr.setjmp_buffer, 3); |
314 |
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315 |
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jpeg_start_decompress (&cinfo); |
316 |
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317 |
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while (cinfo.output_scanline < cinfo.output_height) |
318 |
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{ |
319 |
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int remaining = cinfo.output_height - cinfo.output_scanline; |
320 |
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JSAMPROW rp[4]; |
321 |
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322 |
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rp [0] = data + cinfo.output_scanline * rs; |
323 |
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rp [1] = (guchar *)rp [0] + rs; |
324 |
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rp [2] = (guchar *)rp [1] + rs; |
325 |
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rp [3] = (guchar *)rp [2] + rs; |
326 |
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327 |
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jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
328 |
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} |
329 |
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330 |
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jpeg_finish_decompress (&cinfo); |
331 |
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fclose (fp); |
332 |
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jpeg_destroy_decompress (&cinfo); |
333 |
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} |
334 |
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OUTPUT: |
335 |
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RETVAL |
336 |
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|
337 |
root |
1.33 |
void |
338 |
|
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compare (GdkPixbuf *a, GdkPixbuf *b) |
339 |
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PPCODE: |
340 |
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{ |
341 |
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int w = gdk_pixbuf_get_width (a); |
342 |
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int h = gdk_pixbuf_get_height (a); |
343 |
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int sa = gdk_pixbuf_get_rowstride (a); |
344 |
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int sb = gdk_pixbuf_get_rowstride (b); |
345 |
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346 |
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guchar *pa = gdk_pixbuf_get_pixels (a); |
347 |
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guchar *pb = gdk_pixbuf_get_pixels (b); |
348 |
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|
349 |
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int x, y; |
350 |
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|
351 |
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assert (w == gdk_pixbuf_get_width (b)); |
352 |
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assert (h == gdk_pixbuf_get_height (b)); |
353 |
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354 |
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assert (gdk_pixbuf_get_n_channels (a) == 3); |
355 |
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assert (gdk_pixbuf_get_n_channels (b) == 3); |
356 |
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|
357 |
|
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double diff = 0.; |
358 |
|
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int peak = 0; |
359 |
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|
360 |
root |
1.35 |
if (w && h) |
361 |
root |
1.34 |
for (y = 0; y < h; y++) |
362 |
|
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{ |
363 |
|
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guchar *pa_ = pa + y * sa; |
364 |
|
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guchar *pb_ = pb + y * sb; |
365 |
root |
1.33 |
|
366 |
root |
1.34 |
for (x = 0; x < w; x++) |
367 |
|
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{ |
368 |
|
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int d; |
369 |
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|
370 |
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d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
371 |
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d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
372 |
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d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
373 |
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} |
374 |
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} |
375 |
root |
1.33 |
|
376 |
|
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EXTEND (SP, 2); |
377 |
|
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PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
378 |
|
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PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
379 |
|
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} |
380 |
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|
381 |
root |
1.6 |
############################################################################# |
382 |
|
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|
383 |
root |
1.2 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
384 |
|
|
|
385 |
root |
1.18 |
SV * |
386 |
|
|
foldcase (SV *pathsv) |
387 |
|
|
PROTOTYPE: $ |
388 |
|
|
CODE: |
389 |
|
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{ |
390 |
|
|
STRLEN plen; |
391 |
root |
1.25 |
U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
392 |
root |
1.18 |
U8 *pend = path + plen; |
393 |
|
|
U8 dst [plen * 6 * 3], *dstp = dst; |
394 |
|
|
|
395 |
|
|
while (path < pend) |
396 |
|
|
{ |
397 |
root |
1.19 |
U8 ch = *path; |
398 |
|
|
|
399 |
|
|
if (ch >= 'a' && ch <= 'z') |
400 |
|
|
*dstp++ = *path++; |
401 |
|
|
else if (ch >= '0' && ch <= '9') |
402 |
root |
1.18 |
{ |
403 |
|
|
STRLEN el, nl = 0; |
404 |
root |
1.19 |
while (*path >= '0' && *path <= '9' && path < pend) |
405 |
root |
1.18 |
path++, nl++; |
406 |
|
|
|
407 |
|
|
for (el = nl; el < 6; el++) |
408 |
|
|
*dstp++ = '0'; |
409 |
|
|
|
410 |
|
|
memcpy (dstp, path - nl, nl); |
411 |
|
|
dstp += nl; |
412 |
|
|
} |
413 |
|
|
else |
414 |
|
|
{ |
415 |
|
|
STRLEN cl; |
416 |
|
|
to_utf8_fold (path, dstp, &cl); |
417 |
|
|
dstp += cl; |
418 |
|
|
path += is_utf8_char (path); |
419 |
|
|
} |
420 |
|
|
} |
421 |
|
|
|
422 |
root |
1.25 |
RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
423 |
root |
1.18 |
} |
424 |
|
|
OUTPUT: |
425 |
|
|
RETVAL |
426 |
|
|
|
427 |
root |
1.3 |
GdkPixbuf_noinc * |
428 |
root |
1.24 |
p7_to_pb (int w, int h, SV *src_sv) |
429 |
root |
1.21 |
PROTOTYPE: @ |
430 |
root |
1.2 |
CODE: |
431 |
|
|
{ |
432 |
|
|
int x, y; |
433 |
|
|
guchar *dst, *d; |
434 |
|
|
int dstr; |
435 |
root |
1.25 |
guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
436 |
root |
1.2 |
|
437 |
|
|
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
438 |
|
|
dst = gdk_pixbuf_get_pixels (RETVAL); |
439 |
|
|
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
440 |
|
|
|
441 |
|
|
for (y = 0; y < h; y++) |
442 |
|
|
for (d = dst + y * dstr, x = 0; x < w; x++) |
443 |
|
|
{ |
444 |
root |
1.3 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
445 |
|
|
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
446 |
|
|
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
447 |
root |
1.2 |
|
448 |
|
|
src++; |
449 |
|
|
} |
450 |
root |
1.3 |
} |
451 |
|
|
OUTPUT: |
452 |
|
|
RETVAL |
453 |
|
|
|
454 |
root |
1.6 |
############################################################################# |
455 |
root |
1.4 |
|
456 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
457 |
|
|
|
458 |
|
|
void |
459 |
root |
1.7 |
dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
460 |
root |
1.4 |
CODE: |
461 |
|
|
{ |
462 |
|
|
int w = gdk_pixbuf_get_width (pb); |
463 |
|
|
int h = gdk_pixbuf_get_height (pb); |
464 |
|
|
int x, y, i; |
465 |
|
|
guchar *dst; |
466 |
root |
1.7 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
467 |
root |
1.4 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
468 |
|
|
int sstr = gdk_pixbuf_get_rowstride (pb); |
469 |
|
|
|
470 |
|
|
a85_init (); |
471 |
|
|
|
472 |
|
|
for (y = 0; y < h; y++) |
473 |
|
|
for (x = 0; x < w; x++) |
474 |
root |
1.7 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
475 |
root |
1.4 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
476 |
|
|
|
477 |
|
|
a85_finish (fp); |
478 |
root |
1.7 |
} |
479 |
|
|
|
480 |
|
|
void |
481 |
|
|
dump_binary (PerlIO *fp, GdkPixbuf *pb) |
482 |
|
|
CODE: |
483 |
|
|
{ |
484 |
|
|
int w = gdk_pixbuf_get_width (pb); |
485 |
|
|
int h = gdk_pixbuf_get_height (pb); |
486 |
|
|
int x, y, i; |
487 |
|
|
guchar *dst; |
488 |
|
|
int bpp = gdk_pixbuf_get_n_channels (pb); |
489 |
|
|
guchar *src = gdk_pixbuf_get_pixels (pb); |
490 |
|
|
int sstr = gdk_pixbuf_get_rowstride (pb); |
491 |
|
|
|
492 |
|
|
for (y = 0; y < h; y++) |
493 |
|
|
for (x = 0; x < w; x++) |
494 |
|
|
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
495 |
|
|
PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
496 |
root |
1.4 |
} |
497 |
root |
1.8 |
|
498 |
|
|
############################################################################# |
499 |
|
|
|
500 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
501 |
|
|
|
502 |
|
|
SV * |
503 |
|
|
pb_to_hv84 (GdkPixbuf *pb) |
504 |
|
|
CODE: |
505 |
|
|
{ |
506 |
|
|
int w = gdk_pixbuf_get_width (pb); |
507 |
|
|
int h = gdk_pixbuf_get_height (pb); |
508 |
|
|
int x, y; |
509 |
|
|
guchar *dst; |
510 |
|
|
int bpp = gdk_pixbuf_get_n_channels (pb); |
511 |
|
|
guchar *src = gdk_pixbuf_get_pixels (pb); |
512 |
|
|
int sstr = gdk_pixbuf_get_rowstride (pb); |
513 |
|
|
|
514 |
|
|
RETVAL = newSV (6 * 8 * 12 / 8); |
515 |
|
|
SvPOK_only (RETVAL); |
516 |
|
|
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
517 |
|
|
|
518 |
root |
1.25 |
dst = (guchar *)SvPVX (RETVAL); |
519 |
root |
1.8 |
|
520 |
|
|
/* some primitive error distribution + random dithering */ |
521 |
|
|
|
522 |
|
|
for (y = 0; y < h; y++) |
523 |
|
|
{ |
524 |
|
|
guchar *p = src + y * sstr; |
525 |
|
|
|
526 |
|
|
for (x = 0; x < w; x += 2) |
527 |
|
|
{ |
528 |
|
|
unsigned int r, g, b, h, s, v, H, V1, V2; |
529 |
|
|
|
530 |
|
|
if (bpp == 3) |
531 |
|
|
r = *p++, g = *p++, b = *p++; |
532 |
|
|
else if (bpp == 1) |
533 |
|
|
r = g = b = *p++; |
534 |
|
|
else |
535 |
|
|
abort (); |
536 |
|
|
|
537 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
538 |
|
|
|
539 |
|
|
H = (h * 15 / 255) << 4; |
540 |
|
|
V1 = v; |
541 |
|
|
|
542 |
|
|
if (bpp == 3) |
543 |
|
|
r = *p++, g = *p++, b = *p++; |
544 |
|
|
else if (bpp == 1) |
545 |
|
|
r = g = b = *p++; |
546 |
|
|
else |
547 |
|
|
abort (); |
548 |
|
|
|
549 |
|
|
rgb_to_hsv (r, g, b, &h, &s, &v); |
550 |
|
|
|
551 |
|
|
H |= h * 15 / 255; |
552 |
|
|
V2 = v; |
553 |
|
|
|
554 |
|
|
*dst++ = H; |
555 |
|
|
*dst++ = V1; |
556 |
|
|
*dst++ = V2; |
557 |
|
|
} |
558 |
|
|
} |
559 |
|
|
} |
560 |
|
|
OUTPUT: |
561 |
|
|
RETVAL |
562 |
root |
1.4 |
|
563 |
root |
1.9 |
SV * |
564 |
|
|
hv84_to_av (unsigned char *hv84) |
565 |
|
|
CODE: |
566 |
|
|
{ |
567 |
|
|
int i = 72 / 3; |
568 |
|
|
AV *av = newAV (); |
569 |
|
|
|
570 |
|
|
RETVAL = (SV *)newRV_noinc ((SV *)av); |
571 |
|
|
while (i--) |
572 |
|
|
{ |
573 |
|
|
int h = *hv84++; |
574 |
|
|
int v1 = *hv84++; |
575 |
|
|
int v2 = *hv84++; |
576 |
|
|
|
577 |
|
|
av_push (av, newSViv (v1)); |
578 |
|
|
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
579 |
|
|
av_push (av, newSViv (v2)); |
580 |
|
|
av_push (av, newSViv ((h & 15) * 255 / 15)); |
581 |
|
|
} |
582 |
|
|
} |
583 |
|
|
OUTPUT: |
584 |
|
|
RETVAL |
585 |
root |
1.2 |
|
586 |
root |
1.20 |
############################################################################# |
587 |
|
|
|
588 |
|
|
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
589 |
|
|
|
590 |
|
|
SV * |
591 |
|
|
make_histograms (SV *ar) |
592 |
|
|
CODE: |
593 |
|
|
{ |
594 |
|
|
int i; |
595 |
|
|
AV *av, *result; |
596 |
|
|
|
597 |
|
|
if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
598 |
|
|
croak ("Not an array ref as first argument to make_histogram"); |
599 |
|
|
|
600 |
|
|
av = (AV *) SvRV (ar); |
601 |
|
|
result = newAV (); |
602 |
|
|
|
603 |
|
|
for (i = 0; i <= av_len (av); ++i) |
604 |
|
|
{ |
605 |
|
|
const int HISTSIZE = 64; |
606 |
|
|
|
607 |
|
|
int j; |
608 |
|
|
SV *sv = *av_fetch (av, i, 1); |
609 |
|
|
STRLEN len; |
610 |
|
|
char *buf = SvPVbyte (sv, len); |
611 |
|
|
|
612 |
|
|
int tmphist[HISTSIZE]; |
613 |
|
|
float *hist; |
614 |
|
|
|
615 |
|
|
SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
616 |
|
|
SvPOK_on (histsv); |
617 |
|
|
SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
618 |
|
|
hist = (float *)SvPVX (histsv); |
619 |
|
|
|
620 |
|
|
Zero (tmphist, sizeof (tmphist), char); |
621 |
|
|
|
622 |
|
|
for (j = len; j--; ) |
623 |
|
|
{ |
624 |
|
|
unsigned int idx |
625 |
|
|
= ((*buf & 0xc0) >> 2) |
626 |
|
|
| ((*buf & 0x18) >> 1) |
627 |
|
|
| (*buf & 0x03); |
628 |
|
|
|
629 |
|
|
++tmphist[idx]; |
630 |
|
|
++buf; |
631 |
|
|
} |
632 |
|
|
|
633 |
|
|
for (j = 0; j < HISTSIZE; ++j) |
634 |
|
|
hist[j] = (float)tmphist[j] / (len + 1e-30); |
635 |
|
|
|
636 |
|
|
av_push (result, histsv); |
637 |
|
|
} |
638 |
|
|
|
639 |
|
|
RETVAL = newRV_noinc ((SV *)result); |
640 |
|
|
} |
641 |
|
|
OUTPUT: |
642 |
|
|
RETVAL |
643 |
root |
1.1 |
|
644 |
|
|
|