1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
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5 | #include <setjmp.h> |
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6 | |
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7 | #include <jpeglib.h> |
5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
8 | #include <gdk-pixbuf/gdk-pixbuf.h> |
6 | |
9 | |
7 | #include <gperl.h> |
10 | #include <gperl.h> |
8 | #include <gtk2perl.h> |
11 | #include <gtk2perl.h> |
9 | |
12 | |
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13 | #define IW 80 /* MUST match Schnauer.pm! */ |
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14 | #define IH 60 /* MUST match Schnauer.pm! */ |
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15 | |
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16 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
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17 | |
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18 | #define LINELENGTH 240 |
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19 | |
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20 | #define ELLIPSIS "\xe2\x80\xa6" |
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21 | |
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22 | struct jpg_err_mgr |
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23 | { |
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24 | struct jpeg_error_mgr err; |
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25 | jmp_buf setjmp_buffer; |
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26 | }; |
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27 | |
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28 | static void |
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29 | cv_error_exit (j_common_ptr cinfo) |
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30 | { |
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31 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
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32 | } |
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33 | |
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34 | static void |
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35 | cv_error_output (j_common_ptr cinfo) |
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36 | { |
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37 | return; |
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38 | } |
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39 | |
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40 | static void |
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41 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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42 | unsigned int *h, unsigned int *s, unsigned int *v) |
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43 | { |
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44 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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45 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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46 | unsigned int delta = mx - mn; |
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47 | |
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48 | *v = mx; |
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49 | |
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50 | *s = mx ? delta * 255 / mx : 0; |
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51 | |
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52 | if (delta == 0) |
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53 | *h = 0; |
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54 | else |
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55 | { |
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56 | if (r == mx) |
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57 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
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58 | else if (g == mx) |
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59 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
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60 | else if (b == mx) |
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61 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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62 | |
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63 | *h &= 255; |
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64 | } |
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65 | } |
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66 | |
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67 | static guint32 a85_val; |
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68 | static guint a85_cnt; |
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69 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
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70 | |
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71 | static void |
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72 | a85_init (void) |
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73 | { |
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74 | a85_cnt = 4; |
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75 | a85_ptr = a85_buf; |
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76 | } |
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77 | |
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78 | static void |
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79 | a85_push (PerlIO *fp, guchar c) |
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80 | { |
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81 | a85_val = a85_val << 8 | c; |
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82 | |
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83 | if (!--a85_cnt) |
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84 | { |
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85 | a85_cnt = 4; |
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86 | if (a85_val) |
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87 | { |
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88 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
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89 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
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90 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
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91 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
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92 | a85_ptr[0] = (a85_val ) + 33; |
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93 | |
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94 | a85_ptr += 5; |
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95 | } |
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96 | else |
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97 | *a85_ptr++ = 'z'; |
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98 | |
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99 | if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
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100 | { |
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101 | *a85_ptr++ = '\n'; |
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102 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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103 | a85_ptr = a85_buf; |
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104 | } |
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105 | } |
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106 | |
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107 | } |
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108 | |
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109 | static void |
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110 | a85_finish (PerlIO *fp) |
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111 | { |
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112 | while (a85_cnt != 4) |
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113 | a85_push (fp, 0); |
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114 | |
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115 | *a85_ptr++ = '~'; // probably buggy end-marker |
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116 | *a85_ptr++ = '>'; // probably buggy end-marker |
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117 | *a85_ptr++ = '\n'; |
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118 | |
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119 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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120 | } |
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121 | |
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122 | ///////////////////////////////////////////////////////////////////////////// |
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123 | |
10 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
124 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
11 | |
125 | |
12 | PROTOTYPES: ENABLE |
126 | PROTOTYPES: ENABLE |
13 | |
127 | |
14 | GdkPixbuf * |
128 | GdkPixbuf_noinc * |
15 | transpose (GdkPixbuf *pb) |
129 | transpose (GdkPixbuf *pb) |
16 | CODE: |
130 | CODE: |
17 | { |
131 | { |
18 | int w = gdk_pixbuf_get_width (pb); |
132 | int w = gdk_pixbuf_get_width (pb); |
19 | int h = gdk_pixbuf_get_height (pb); |
133 | int h = gdk_pixbuf_get_height (pb); |
20 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
134 | int bpp = gdk_pixbuf_get_n_channels (pb); |
21 | int x, y, i; |
135 | int x, y, i; |
22 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
136 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
23 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
137 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
24 | |
138 | |
25 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
139 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
26 | |
140 | |
27 | dst = gdk_pixbuf_get_pixels (RETVAL); |
141 | dst = gdk_pixbuf_get_pixels (RETVAL); |
28 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
142 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
29 | |
143 | |
30 | for (x = 0; x < w; x++) |
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31 | for (y = 0; y < h; y++) |
144 | for (y = 0; y < h; y++) |
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145 | for (x = 0; x < w; x++) |
32 | for (i = 0; i < bpp; i++) |
146 | for (i = 0; i < bpp; i++) |
33 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
147 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
34 | } |
148 | } |
35 | OUTPUT: |
149 | OUTPUT: |
36 | RETVAL |
150 | RETVAL |
37 | |
151 | |
38 | GdkPixbuf * |
152 | GdkPixbuf_noinc * |
39 | flop (GdkPixbuf *pb) |
153 | flop (GdkPixbuf *pb) |
40 | CODE: |
154 | CODE: |
41 | { |
155 | { |
42 | int w = gdk_pixbuf_get_width (pb); |
156 | int w = gdk_pixbuf_get_width (pb); |
43 | int h = gdk_pixbuf_get_height (pb); |
157 | int h = gdk_pixbuf_get_height (pb); |
44 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
158 | int bpp = gdk_pixbuf_get_n_channels (pb); |
45 | int x, y, i; |
159 | int x, y, i; |
46 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
160 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
47 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
161 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
48 | |
162 | |
49 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
163 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
50 | |
164 | |
51 | dst = gdk_pixbuf_get_pixels (RETVAL); |
165 | dst = gdk_pixbuf_get_pixels (RETVAL); |
52 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
166 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
53 | |
167 | |
54 | for (x = 0; x < w; x++) |
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55 | for (y = 0; y < h; y++) |
168 | for (y = 0; y < h; y++) |
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169 | for (x = 0; x < w; x++) |
56 | for (i = 0; i < bpp; i++) |
170 | for (i = 0; i < bpp; i++) |
57 | dst[(w - x) * bpp + y * dstr + i] = src[x *bpp + y * sstr + i]; |
171 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
58 | } |
172 | } |
59 | OUTPUT: |
173 | OUTPUT: |
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174 | RETVAL |
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175 | |
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176 | GdkPixbuf_noinc * |
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177 | load_jpeg (char *path, int thumbnail=0) |
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178 | CODE: |
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179 | { |
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180 | struct jpeg_decompress_struct cinfo; |
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181 | struct jpg_err_mgr jerr; |
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182 | guchar *data; |
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183 | int rs; |
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184 | FILE *fp; |
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185 | volatile GdkPixbuf *pb = 0; |
60 | RETVAL |
186 | RETVAL = 0; |
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187 | |
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188 | if (!(fp = fopen (path, "rb"))) |
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189 | XSRETURN_UNDEF; |
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190 | |
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191 | cinfo.err = jpeg_std_error (&jerr.err); |
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192 | |
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193 | jerr.err.error_exit = cv_error_exit; |
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194 | jerr.err.output_message = cv_error_output; |
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195 | |
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196 | if ((rs = setjmp (jerr.setjmp_buffer))) |
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197 | { |
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198 | fclose (fp); |
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199 | jpeg_destroy_decompress (&cinfo); |
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200 | |
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201 | if (pb) |
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202 | g_object_unref ((gpointer)pb); |
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203 | |
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204 | XSRETURN_UNDEF; |
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205 | } |
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206 | |
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207 | jpeg_create_decompress (&cinfo); |
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208 | |
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209 | jpeg_stdio_src (&cinfo, fp); |
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210 | jpeg_read_header (&cinfo, TRUE); |
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211 | |
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212 | cinfo.dct_method = JDCT_DEFAULT; |
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213 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
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214 | cinfo.do_block_smoothing = FALSE; |
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215 | cinfo.out_color_space = JCS_RGB; |
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216 | cinfo.quantize_colors = FALSE; |
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217 | |
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218 | cinfo.scale_num = 1; |
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219 | cinfo.scale_denom = 1; |
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220 | |
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221 | jpeg_calc_output_dimensions (&cinfo); |
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222 | |
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223 | if (thumbnail) |
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224 | { |
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225 | cinfo.dct_method = JDCT_FASTEST; |
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226 | cinfo.do_fancy_upsampling = FALSE; |
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227 | |
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228 | while (cinfo.scale_denom < 8 |
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229 | && (cinfo.output_width >> 1) >= IW |
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230 | && (cinfo.output_height >> 1) >= IH) |
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231 | { |
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232 | cinfo.scale_denom <<= 1; |
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233 | jpeg_calc_output_dimensions (&cinfo); |
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234 | } |
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235 | } |
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236 | |
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237 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
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238 | if (!RETVAL) |
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239 | longjmp (jerr.setjmp_buffer, 2); |
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240 | |
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241 | data = gdk_pixbuf_get_pixels (RETVAL); |
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242 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
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243 | |
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244 | if (cinfo.output_components != 3) |
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245 | longjmp (jerr.setjmp_buffer, 3); |
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246 | |
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247 | jpeg_start_decompress (&cinfo); |
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248 | |
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249 | while (cinfo.output_scanline < cinfo.output_height) |
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250 | { |
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251 | int remaining = cinfo.output_height - cinfo.output_scanline; |
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252 | JSAMPROW rp[4]; |
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253 | |
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254 | rp [0] = data + cinfo.output_scanline * rs; |
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255 | rp [1] = (guchar *)rp [0] + rs; |
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256 | rp [2] = (guchar *)rp [1] + rs; |
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257 | rp [3] = (guchar *)rp [2] + rs; |
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258 | |
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259 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
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260 | } |
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261 | |
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262 | jpeg_finish_decompress (&cinfo); |
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263 | fclose (fp); |
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264 | jpeg_destroy_decompress (&cinfo); |
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265 | } |
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266 | OUTPUT: |
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267 | RETVAL |
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268 | |
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269 | ############################################################################# |
61 | |
270 | |
62 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
271 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
63 | |
272 | |
64 | GdkPixbuf * |
273 | GdkPixbuf_noinc * |
65 | p7_to_pb (int w, int h, guchar *src) |
274 | p7_to_pb (int w, int h, guchar *src) |
66 | CODE: |
275 | CODE: |
67 | { |
276 | { |
68 | int x, y; |
277 | int x, y; |
69 | guchar *dst, *d; |
278 | guchar *dst, *d; |
… | |
… | |
74 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
283 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
75 | |
284 | |
76 | for (y = 0; y < h; y++) |
285 | for (y = 0; y < h; y++) |
77 | for (d = dst + y * dstr, x = 0; x < w; x++) |
286 | for (d = dst + y * dstr, x = 0; x < w; x++) |
78 | { |
287 | { |
79 | *d++ = ((*src >> 5) & 7) * 255 / 7; |
288 | *d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
80 | *d++ = ((*src >> 2) & 7) * 255 / 7; |
289 | *d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
81 | *d++ = ((*src >> 0) & 3) * 255 / 3; |
290 | *d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
82 | |
291 | |
83 | src++; |
292 | src++; |
84 | } |
293 | } |
85 | } |
294 | } |
86 | OUTPUT: |
295 | OUTPUT: |
87 | RETVAL |
296 | RETVAL |
88 | |
297 | |
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298 | SV * |
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299 | pb_to_p7 (GdkPixbuf *pb) |
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300 | CODE: |
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301 | { |
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302 | int w = gdk_pixbuf_get_width (pb); |
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303 | int h = gdk_pixbuf_get_height (pb); |
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304 | int x, y; |
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305 | guchar *dst; |
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306 | int bpp = gdk_pixbuf_get_n_channels (pb); |
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307 | guchar *src = gdk_pixbuf_get_pixels (pb); |
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308 | int sstr = gdk_pixbuf_get_rowstride (pb); |
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309 | int Er[IW], Eg[IW], Eb[IW]; |
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310 | int seed = 77; |
89 | |
311 | |
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312 | RETVAL = newSV (w * h); |
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313 | SvPOK_only (RETVAL); |
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314 | SvCUR_set (RETVAL, w * h); |
90 | |
315 | |
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316 | dst = SvPVX (RETVAL); |
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317 | |
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318 | memset (Er, 0, sizeof (int) * IW); |
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319 | memset (Eg, 0, sizeof (int) * IW); |
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320 | memset (Eb, 0, sizeof (int) * IW); |
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321 | |
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322 | /* some primitive error distribution + random dithering */ |
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323 | |
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324 | for (y = 0; y < h; y++) |
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325 | { |
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326 | int er = 0, eg = 0, eb = 0; |
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327 | |
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328 | for (x = 0; x < w; x++) |
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329 | { |
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330 | int r, g, b; |
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331 | guchar *p = src + x * bpp + y * sstr; |
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332 | |
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333 | r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255; |
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334 | g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255; |
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335 | b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255; |
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336 | |
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337 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
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338 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
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339 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
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340 | |
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341 | er += p[0] - (r * 255 + 4) / 7; |
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342 | eg += p[1] - (g * 255 + 4) / 7; |
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343 | eb += p[2] - (b * 255 + 2) / 3; |
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344 | |
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345 | Er[x] = er >> 1; er -= (er + 1) >> 1; |
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346 | Eg[x] = eg >> 1; eg -= (eg + 1) >> 1; |
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347 | Eb[x] = eb >> 1; eb -= (eb + 1) >> 1; |
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348 | |
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349 | *dst++ = r << 5 | g << 2 | b; |
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350 | } |
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351 | } |
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352 | } |
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353 | OUTPUT: |
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354 | RETVAL |
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355 | |
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356 | SV * |
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357 | make_histogram (SV *ar) |
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358 | CODE: |
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359 | { |
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360 | int i; |
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361 | AV *av, *result; |
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362 | |
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363 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
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364 | croak ("Not an array ref as first argument to make_histogram"); |
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365 | |
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366 | av = (AV *) SvRV (ar); |
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367 | result = newAV (); |
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368 | |
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369 | for (i = 0; i <= av_len (av); ++i) |
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370 | { |
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371 | const int HISTSIZE = 64; |
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372 | |
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373 | int j; |
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374 | SV *sv = *av_fetch (av, i, 1); |
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375 | STRLEN len; |
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376 | char *buf = SvPVbyte (sv, len); |
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377 | |
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378 | int tmphist[HISTSIZE]; |
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379 | float *hist; |
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380 | |
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381 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
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382 | SvPOK_on (histsv); |
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383 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
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384 | hist = (float *)SvPVX (histsv); |
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385 | |
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386 | Zero (tmphist, sizeof (tmphist), char); |
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387 | |
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388 | for (j = len; j--; ) |
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389 | { |
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390 | unsigned int idx |
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391 | = ((*buf & 0xc0) >> 2) |
|
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392 | | ((*buf & 0x18) >> 1) |
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393 | | (*buf & 0x03); |
|
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394 | |
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395 | ++tmphist[idx]; |
|
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396 | ++buf; |
|
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397 | } |
|
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398 | |
|
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399 | for (j = 0; j < HISTSIZE; ++j) |
|
|
400 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
401 | |
|
|
402 | av_push (result, histsv); |
|
|
403 | } |
|
|
404 | |
|
|
405 | RETVAL = newRV_noinc ((SV *)result); |
|
|
406 | } |
|
|
407 | OUTPUT: |
|
|
408 | RETVAL |
|
|
409 | |
|
|
410 | ############################################################################# |
|
|
411 | |
|
|
412 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
413 | |
|
|
414 | void |
|
|
415 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
416 | CODE: |
|
|
417 | { |
|
|
418 | int w = gdk_pixbuf_get_width (pb); |
|
|
419 | int h = gdk_pixbuf_get_height (pb); |
|
|
420 | int x, y, i; |
|
|
421 | guchar *dst; |
|
|
422 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
423 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
424 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
425 | |
|
|
426 | a85_init (); |
|
|
427 | |
|
|
428 | for (y = 0; y < h; y++) |
|
|
429 | for (x = 0; x < w; x++) |
|
|
430 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
431 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
432 | |
|
|
433 | a85_finish (fp); |
|
|
434 | } |
|
|
435 | |
|
|
436 | void |
|
|
437 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
438 | CODE: |
|
|
439 | { |
|
|
440 | int w = gdk_pixbuf_get_width (pb); |
|
|
441 | int h = gdk_pixbuf_get_height (pb); |
|
|
442 | int x, y, i; |
|
|
443 | guchar *dst; |
|
|
444 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
445 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
446 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
447 | |
|
|
448 | for (y = 0; y < h; y++) |
|
|
449 | for (x = 0; x < w; x++) |
|
|
450 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
451 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
452 | } |
|
|
453 | |
|
|
454 | ############################################################################# |
|
|
455 | |
|
|
456 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
457 | |
|
|
458 | SV * |
|
|
459 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
460 | CODE: |
|
|
461 | { |
|
|
462 | int w = gdk_pixbuf_get_width (pb); |
|
|
463 | int h = gdk_pixbuf_get_height (pb); |
|
|
464 | int x, y; |
|
|
465 | guchar *dst; |
|
|
466 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
467 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
468 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
469 | |
|
|
470 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
|
471 | SvPOK_only (RETVAL); |
|
|
472 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
|
473 | |
|
|
474 | dst = SvPVX (RETVAL); |
|
|
475 | |
|
|
476 | /* some primitive error distribution + random dithering */ |
|
|
477 | |
|
|
478 | for (y = 0; y < h; y++) |
|
|
479 | { |
|
|
480 | guchar *p = src + y * sstr; |
|
|
481 | |
|
|
482 | for (x = 0; x < w; x += 2) |
|
|
483 | { |
|
|
484 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
|
485 | |
|
|
486 | if (bpp == 3) |
|
|
487 | r = *p++, g = *p++, b = *p++; |
|
|
488 | else if (bpp == 1) |
|
|
489 | r = g = b = *p++; |
|
|
490 | else |
|
|
491 | abort (); |
|
|
492 | |
|
|
493 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
494 | |
|
|
495 | H = (h * 15 / 255) << 4; |
|
|
496 | V1 = v; |
|
|
497 | |
|
|
498 | if (bpp == 3) |
|
|
499 | r = *p++, g = *p++, b = *p++; |
|
|
500 | else if (bpp == 1) |
|
|
501 | r = g = b = *p++; |
|
|
502 | else |
|
|
503 | abort (); |
|
|
504 | |
|
|
505 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
506 | |
|
|
507 | H |= h * 15 / 255; |
|
|
508 | V2 = v; |
|
|
509 | |
|
|
510 | *dst++ = H; |
|
|
511 | *dst++ = V1; |
|
|
512 | *dst++ = V2; |
|
|
513 | } |
|
|
514 | } |
|
|
515 | } |
|
|
516 | OUTPUT: |
|
|
517 | RETVAL |
|
|
518 | |
|
|
519 | SV * |
|
|
520 | hv84_to_av (unsigned char *hv84) |
|
|
521 | CODE: |
|
|
522 | { |
|
|
523 | int i = 72 / 3; |
|
|
524 | AV *av = newAV (); |
|
|
525 | |
|
|
526 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
527 | while (i--) |
|
|
528 | { |
|
|
529 | int h = *hv84++; |
|
|
530 | int v1 = *hv84++; |
|
|
531 | int v2 = *hv84++; |
|
|
532 | |
|
|
533 | av_push (av, newSViv (v1)); |
|
|
534 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
535 | av_push (av, newSViv (v2)); |
|
|
536 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
537 | } |
|
|
538 | } |
|
|
539 | OUTPUT: |
|
|
540 | RETVAL |
|
|
541 | |
|
|
542 | |
|
|
543 | |