… | |
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2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #include <string.h> |
5 | #include <string.h> |
6 | #include <setjmp.h> |
6 | #include <setjmp.h> |
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7 | #include <math.h> |
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8 | |
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9 | #include <magic.h> |
7 | |
10 | |
8 | #include <jpeglib.h> |
11 | #include <jpeglib.h> |
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12 | #include <jerror.h> |
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13 | |
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14 | #include <glib.h> |
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15 | #include <gtk/gtk.h> |
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16 | #include <gdk/gdkx.h> |
9 | #include <gdk-pixbuf/gdk-pixbuf.h> |
17 | #include <gdk-pixbuf/gdk-pixbuf.h> |
10 | |
18 | |
11 | #include <gperl.h> |
19 | #include <gperl.h> |
12 | #include <gtk2perl.h> |
20 | #include <gtk2perl.h> |
13 | |
21 | |
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22 | #include <assert.h> |
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23 | |
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24 | #if WEBP |
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25 | #include <webp/demux.h> |
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26 | #include <webp/decode.h> |
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27 | #endif |
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28 | |
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29 | #include "perlmulticore.h" |
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30 | |
14 | #define IW 80 /* MUST match Schnauer.pm! */ |
31 | #define IW 80 /* MUST match Schnauzer.pm! */ |
15 | #define IH 60 /* MUST match Schnauer.pm! */ |
32 | #define IH 60 /* MUST match Schnauzer.pm! */ |
16 | |
33 | |
17 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
34 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
18 | |
35 | |
19 | #define LINELENGTH 240 |
36 | #define LINELENGTH 240 |
20 | |
37 | |
21 | #define ELLIPSIS "\xe2\x80\xa6" |
38 | #define ELLIPSIS "\xe2\x80\xa6" |
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39 | |
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40 | typedef char *octet_string; |
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41 | |
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42 | static magic_t magic_cookie[2]; /* !mime, mime */ |
22 | |
43 | |
23 | struct jpg_err_mgr |
44 | struct jpg_err_mgr |
24 | { |
45 | { |
25 | struct jpeg_error_mgr err; |
46 | struct jpeg_error_mgr err; |
26 | jmp_buf setjmp_buffer; |
47 | jmp_buf setjmp_buffer; |
27 | }; |
48 | }; |
28 | |
49 | |
29 | static void |
50 | static void |
30 | cv_error_exit (j_common_ptr cinfo) |
51 | cv_error_exit (j_common_ptr cinfo) |
31 | { |
52 | { |
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53 | cinfo->err->output_message (cinfo); |
32 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
54 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
33 | } |
55 | } |
34 | |
56 | |
35 | static void |
57 | static void |
36 | cv_error_output (j_common_ptr cinfo) |
58 | cv_error_output (j_common_ptr cinfo) |
37 | { |
59 | { |
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60 | char msg[JMSG_LENGTH_MAX]; |
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61 | |
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62 | cinfo->err->format_message (cinfo, msg); |
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63 | |
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64 | fprintf (stderr, "JPEG decoding error: %s\n", msg); |
38 | return; |
65 | return; |
39 | } |
66 | } |
40 | |
67 | |
41 | static void |
68 | static void |
42 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
69 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
… | |
… | |
63 | |
90 | |
64 | *h &= 255; |
91 | *h &= 255; |
65 | } |
92 | } |
66 | } |
93 | } |
67 | |
94 | |
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95 | struct feature { |
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96 | float v1, v2, v3; // mean, square, cube |
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97 | int n; |
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98 | }; |
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99 | |
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100 | static void |
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101 | feature_init (struct feature *f) |
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102 | { |
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103 | f->v1 = 0.; |
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104 | f->v2 = 0.; |
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105 | f->v3 = 0.; |
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106 | f->n = 0; |
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107 | } |
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108 | |
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109 | // didn't find an algorithm to neatly do mean, variance and skew in one pass. |
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110 | // elmex ist schuld. |
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111 | static void |
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112 | feature_update_pass_1 (struct feature *f, unsigned int v) |
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113 | { |
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114 | f->v1 += v; |
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115 | f->n += 1; |
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116 | } |
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117 | |
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118 | static void |
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119 | feature_finish_pass_1 (struct feature *f) |
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120 | { |
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121 | if (f->n < 1) |
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122 | return; |
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123 | |
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124 | f->v1 /= f->n; |
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125 | } |
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126 | |
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127 | static void |
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128 | feature_update_pass_2 (struct feature *f, unsigned int v) |
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129 | { |
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130 | float d = v - f->v1; |
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131 | |
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132 | f->v2 += d * d; |
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133 | f->v3 += d * d * d; |
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134 | } |
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135 | |
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136 | static void |
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137 | feature_finish_pass_2 (struct feature *f) |
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138 | { |
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139 | if (f->n < 1) |
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140 | return; |
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141 | |
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142 | f->v2 /= f->n; |
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143 | f->v3 /= f->n; |
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144 | |
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145 | f->v1 /= 255.; |
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146 | f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
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147 | f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
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148 | } |
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149 | |
68 | static guint32 a85_val; |
150 | static guint32 a85_val; |
69 | static guint a85_cnt; |
151 | static guint a85_cnt; |
70 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
152 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
71 | |
153 | |
72 | static void |
154 | static void |
… | |
… | |
84 | if (!--a85_cnt) |
166 | if (!--a85_cnt) |
85 | { |
167 | { |
86 | a85_cnt = 4; |
168 | a85_cnt = 4; |
87 | if (a85_val) |
169 | if (a85_val) |
88 | { |
170 | { |
89 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
171 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
90 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
172 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
91 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
173 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
92 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
174 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
93 | a85_ptr[0] = (a85_val ) + 33; |
175 | a85_ptr[0] = (a85_val ) + 33; |
94 | |
176 | |
95 | a85_ptr += 5; |
177 | a85_ptr += 5; |
96 | } |
178 | } |
… | |
… | |
119 | |
201 | |
120 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
202 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
121 | } |
203 | } |
122 | |
204 | |
123 | ///////////////////////////////////////////////////////////////////////////// |
205 | ///////////////////////////////////////////////////////////////////////////// |
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206 | // memory source for libjpeg |
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207 | |
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208 | static void cv_ms_init (j_decompress_ptr cinfo) |
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209 | { |
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210 | } |
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211 | |
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212 | static void cv_ms_term (j_decompress_ptr cinfo) |
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213 | { |
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214 | } |
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215 | |
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216 | static boolean cv_ms_fill (j_decompress_ptr cinfo) |
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217 | { |
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218 | // unexpected EOF, warn and generate fake EOI marker |
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219 | |
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220 | WARNMS (cinfo, JWRN_JPEG_EOF); |
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221 | |
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222 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
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223 | |
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224 | static const JOCTET eoi[] = { 0xFF, JPEG_EOI }; |
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225 | |
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226 | src->next_input_byte = eoi; |
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227 | src->bytes_in_buffer = sizeof (eoi); |
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228 | |
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229 | return TRUE; |
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230 | } |
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231 | |
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232 | static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes) |
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233 | { |
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234 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
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235 | |
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236 | src->next_input_byte += num_bytes; |
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237 | src->bytes_in_buffer -= num_bytes; |
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238 | } |
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239 | |
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240 | static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen) |
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241 | { |
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242 | struct jpeg_source_mgr *src; |
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243 | |
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244 | if (!cinfo->src) |
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245 | cinfo->src = (struct jpeg_source_mgr *) |
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246 | (*cinfo->mem->alloc_small) ( |
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247 | (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr) |
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248 | ); |
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249 | |
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250 | src = (struct jpeg_source_mgr *)cinfo->src; |
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251 | src->init_source = cv_ms_init; |
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252 | src->fill_input_buffer = cv_ms_fill; |
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253 | src->skip_input_data = cv_ms_skip; |
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254 | src->resync_to_restart = jpeg_resync_to_restart; |
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255 | src->term_source = cv_ms_term; |
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256 | src->next_input_byte = (JOCTET *)buf; |
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257 | src->bytes_in_buffer = buflen; |
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258 | } |
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259 | |
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260 | ///////////////////////////////////////////////////////////////////////////// |
124 | |
261 | |
125 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
262 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
126 | |
263 | |
127 | PROTOTYPES: ENABLE |
264 | PROTOTYPES: ENABLE |
128 | |
265 | |
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266 | # calculate the common prefix length of two strings |
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267 | # missing function in perl. really :) |
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268 | int |
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269 | common_prefix_length (a, b) |
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270 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
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271 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
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272 | CODE: |
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273 | RETVAL = 0; |
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274 | |
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275 | while (*a == *b && *a) |
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276 | { |
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277 | RETVAL += (*a & 0xc0) != 0x80; |
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278 | a++, b++; |
|
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279 | } |
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280 | |
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281 | OUTPUT: |
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282 | RETVAL |
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283 | |
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284 | const char * |
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285 | magic (SV *path_or_data) |
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286 | ALIAS: |
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287 | magic = 0 |
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288 | magic_mime = 1 |
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289 | magic_buffer = 2 |
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290 | magic_buffer_mime = 3 |
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291 | CODE: |
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292 | { |
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293 | STRLEN len; |
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294 | char *data = SvPVbyte (path_or_data, len); |
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295 | |
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296 | if (!magic_cookie[0]) |
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297 | { |
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298 | magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
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299 | magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
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300 | magic_load (magic_cookie[0], 0); |
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301 | magic_load (magic_cookie[1], 0); |
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302 | } |
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303 | |
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304 | perlinterp_release (); |
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305 | |
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306 | RETVAL = ix & 2 |
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307 | ? magic_buffer (magic_cookie[ix & 1], data, len) |
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308 | : magic_file (magic_cookie[ix & 1], data); |
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309 | |
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310 | perlinterp_acquire (); |
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311 | } |
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312 | OUTPUT: |
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313 | RETVAL |
|
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314 | |
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315 | # missing/broken in Gtk2 perl module |
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316 | |
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317 | void |
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318 | gdk_window_clear_hints (GdkWindow *window) |
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319 | CODE: |
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320 | gdk_window_set_geometry_hints (window, 0, 0); |
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321 | |
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322 | gboolean |
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323 | gdk_net_wm_supports (GdkAtom property) |
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324 | CODE: |
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325 | #if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
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326 | RETVAL = gdk_net_wm_supports (property); |
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327 | #else |
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328 | RETVAL = 0; |
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329 | #endif |
|
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330 | OUTPUT: |
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331 | RETVAL |
|
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332 | |
129 | GdkPixbuf_noinc * |
333 | GdkPixbuf_noinc * |
130 | transpose (GdkPixbuf *pb) |
334 | dealpha_expose (GdkPixbuf *pb) |
131 | CODE: |
335 | CODE: |
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336 | perlinterp_release (); |
132 | { |
337 | { |
133 | int w = gdk_pixbuf_get_width (pb); |
338 | int w = gdk_pixbuf_get_width (pb); |
134 | int h = gdk_pixbuf_get_height (pb); |
339 | int h = gdk_pixbuf_get_height (pb); |
135 | int bpp = gdk_pixbuf_get_n_channels (pb); |
340 | int bpp = gdk_pixbuf_get_n_channels (pb); |
136 | int x, y, i; |
341 | int x, y, i; |
137 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
342 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
138 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
343 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
139 | |
344 | |
140 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
345 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
141 | |
346 | |
142 | dst = gdk_pixbuf_get_pixels (RETVAL); |
347 | dst = gdk_pixbuf_get_pixels (RETVAL); |
143 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
348 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
144 | |
349 | |
145 | for (y = 0; y < h; y++) |
|
|
146 | for (x = 0; x < w; x++) |
350 | for (x = 0; x < w; x++) |
|
|
351 | for (y = 0; y < h; y++) |
147 | for (i = 0; i < bpp; i++) |
352 | for (i = 0; i < 3; i++) |
148 | dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
353 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
149 | } |
354 | } |
|
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355 | perlinterp_acquire (); |
150 | OUTPUT: |
356 | OUTPUT: |
151 | RETVAL |
357 | RETVAL |
152 | |
358 | |
153 | GdkPixbuf_noinc * |
359 | GdkPixbuf_noinc * |
154 | flop (GdkPixbuf *pb) |
360 | rotate (GdkPixbuf *pb, int angle) |
155 | CODE: |
361 | CODE: |
156 | { |
362 | perlinterp_release (); |
157 | int w = gdk_pixbuf_get_width (pb); |
363 | if (angle < 0) |
158 | int h = gdk_pixbuf_get_height (pb); |
364 | angle += 360; |
159 | int bpp = gdk_pixbuf_get_n_channels (pb); |
365 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
160 | int x, y, i; |
366 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
161 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
367 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
162 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
368 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
163 | |
369 | : angle); |
164 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
370 | perlinterp_acquire (); |
165 | |
|
|
166 | dst = gdk_pixbuf_get_pixels (RETVAL); |
|
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167 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
168 | |
|
|
169 | for (y = 0; y < h; y++) |
|
|
170 | for (x = 0; x < w; x++) |
|
|
171 | for (i = 0; i < bpp; i++) |
|
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172 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
|
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173 | } |
|
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174 | OUTPUT: |
371 | OUTPUT: |
175 | RETVAL |
372 | RETVAL |
176 | |
373 | |
|
|
374 | const char * |
|
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375 | filetype (SV *image_data) |
|
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376 | CODE: |
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377 | { |
|
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378 | STRLEN data_len; |
|
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379 | U8 *data = SvPVbyte (image_data, data_len); |
|
|
380 | |
|
|
381 | if (data_len >= 20 |
|
|
382 | && data[0] == 0xff |
|
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383 | && data[1] == 0xd8 |
|
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384 | && data[2] == 0xff) |
|
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385 | RETVAL = "jpg"; |
|
|
386 | else if (data_len >= 12 |
|
|
387 | && data[ 0] == (U8)'R' |
|
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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') |
|
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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 |
|
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404 | && data[ 7] == 0x0a) |
|
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405 | RETVAL = "png"; |
|
|
406 | else |
|
|
407 | RETVAL = "other"; |
|
|
408 | } |
|
|
409 | OUTPUT: |
|
|
410 | RETVAL |
|
|
411 | |
177 | GdkPixbuf_noinc * |
412 | GdkPixbuf_noinc * |
178 | load_jpeg (char *path, int thumbnail=0) |
413 | decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
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414 | CODE: |
|
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415 | { |
|
|
416 | #if WEBP |
|
|
417 | STRLEN data_size; |
|
|
418 | int alpha; |
|
|
419 | WebPData data; |
|
|
420 | WebPDemuxer *demux; |
|
|
421 | WebPIterator iter; |
|
|
422 | WebPDecoderConfig config; |
|
|
423 | int inw, inh; |
|
|
424 | |
|
|
425 | data.bytes = (uint8_t *)SvPVbyte (image_data, data_size); |
|
|
426 | data.size = data_size; |
|
|
427 | |
|
|
428 | perlinterp_release (); |
|
|
429 | |
|
|
430 | RETVAL = 0; |
|
|
431 | |
|
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432 | 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 | |
|
|
441 | config.options.use_threads = 1; |
|
|
442 | |
|
|
443 | if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK) |
|
|
444 | goto err_iter; |
|
|
445 | |
|
|
446 | inw = config.input.width; |
|
|
447 | inh = config.input.height; |
|
|
448 | |
|
|
449 | if (thumbnail) |
|
|
450 | { |
|
|
451 | if (inw * ih > inh * iw) |
|
|
452 | ih = (iw * inh + inw - 1) / inw; |
|
|
453 | else |
|
|
454 | iw = (ih * inw + inh - 1) / inh; |
|
|
455 | |
|
|
456 | 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 | iw = inw; |
|
|
466 | ih = inh; |
|
|
467 | } |
|
|
468 | |
|
|
469 | alpha = !!config.input.has_alpha; |
|
|
470 | |
|
|
471 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih); |
|
|
472 | if (!RETVAL) |
|
|
473 | goto err_iter; |
|
|
474 | |
|
|
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 | if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK) |
|
|
482 | { |
|
|
483 | g_object_unref (RETVAL); |
|
|
484 | RETVAL = 0; |
|
|
485 | goto err_iter; |
|
|
486 | } |
|
|
487 | |
|
|
488 | err_iter: |
|
|
489 | WebPDemuxReleaseIterator (&iter); |
|
|
490 | err_demux: |
|
|
491 | WebPDemuxDelete (demux); |
|
|
492 | |
|
|
493 | 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 | decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
179 | CODE: |
503 | CODE: |
180 | { |
504 | { |
181 | struct jpeg_decompress_struct cinfo; |
505 | struct jpeg_decompress_struct cinfo; |
182 | struct jpg_err_mgr jerr; |
506 | struct jpg_err_mgr jerr; |
183 | guchar *data; |
|
|
184 | int rs; |
507 | int rs; |
185 | FILE *fp; |
|
|
186 | volatile GdkPixbuf *pb = 0; |
508 | volatile GdkPixbuf *pb = 0; |
|
|
509 | STRLEN data_len; |
|
|
510 | guchar *data = SvPVbyte (image_data, data_len); |
|
|
511 | |
187 | RETVAL = 0; |
512 | RETVAL = 0; |
188 | |
513 | |
189 | if (!(fp = fopen (path, "rb"))) |
514 | perlinterp_release (); |
190 | XSRETURN_UNDEF; |
|
|
191 | |
515 | |
192 | cinfo.err = jpeg_std_error (&jerr.err); |
516 | cinfo.err = jpeg_std_error (&jerr.err); |
193 | |
517 | |
194 | jerr.err.error_exit = cv_error_exit; |
518 | jerr.err.error_exit = cv_error_exit; |
195 | jerr.err.output_message = cv_error_output; |
519 | jerr.err.output_message = cv_error_output; |
196 | |
520 | |
197 | if ((rs = setjmp (jerr.setjmp_buffer))) |
521 | if ((rs = setjmp (jerr.setjmp_buffer))) |
198 | { |
522 | { |
199 | fclose (fp); |
|
|
200 | jpeg_destroy_decompress (&cinfo); |
523 | jpeg_destroy_decompress (&cinfo); |
201 | |
524 | |
202 | if (pb) |
525 | if (pb) |
203 | g_object_unref ((gpointer)pb); |
526 | g_object_unref ((gpointer)pb); |
204 | |
527 | |
|
|
528 | perlinterp_acquire (); |
205 | XSRETURN_UNDEF; |
529 | XSRETURN_UNDEF; |
206 | } |
530 | } |
207 | |
531 | |
|
|
532 | if (!data_len) |
|
|
533 | longjmp (jerr.setjmp_buffer, 4); |
|
|
534 | |
208 | jpeg_create_decompress (&cinfo); |
535 | jpeg_create_decompress (&cinfo); |
|
|
536 | cv_jpeg_mem_src (&cinfo, data, data_len); |
209 | |
537 | |
210 | jpeg_stdio_src (&cinfo, fp); |
|
|
211 | jpeg_read_header (&cinfo, TRUE); |
538 | jpeg_read_header (&cinfo, TRUE); |
212 | |
539 | |
213 | cinfo.dct_method = JDCT_DEFAULT; |
540 | cinfo.dct_method = JDCT_DEFAULT; |
214 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
541 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
215 | cinfo.do_block_smoothing = FALSE; |
542 | cinfo.do_block_smoothing = FALSE; |
… | |
… | |
225 | { |
552 | { |
226 | cinfo.dct_method = JDCT_FASTEST; |
553 | cinfo.dct_method = JDCT_FASTEST; |
227 | cinfo.do_fancy_upsampling = FALSE; |
554 | cinfo.do_fancy_upsampling = FALSE; |
228 | |
555 | |
229 | while (cinfo.scale_denom < 8 |
556 | while (cinfo.scale_denom < 8 |
230 | && (cinfo.output_width >> 1) >= IW |
557 | && cinfo.output_width >= iw*4 |
231 | && (cinfo.output_height >> 1) >= IH) |
558 | && cinfo.output_height >= ih*4) |
232 | { |
559 | { |
233 | cinfo.scale_denom <<= 1; |
560 | cinfo.scale_denom <<= 1; |
234 | jpeg_calc_output_dimensions (&cinfo); |
561 | jpeg_calc_output_dimensions (&cinfo); |
235 | } |
562 | } |
236 | } |
563 | } |
237 | |
564 | |
|
|
565 | 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 | |
238 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
574 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
239 | if (!RETVAL) |
575 | if (!RETVAL) |
240 | longjmp (jerr.setjmp_buffer, 2); |
576 | longjmp (jerr.setjmp_buffer, 2); |
241 | |
577 | |
242 | data = gdk_pixbuf_get_pixels (RETVAL); |
578 | data = gdk_pixbuf_get_pixels (RETVAL); |
243 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
579 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
244 | |
|
|
245 | if (cinfo.output_components != 3) |
|
|
246 | longjmp (jerr.setjmp_buffer, 3); |
|
|
247 | |
580 | |
248 | jpeg_start_decompress (&cinfo); |
581 | jpeg_start_decompress (&cinfo); |
249 | |
582 | |
250 | while (cinfo.output_scanline < cinfo.output_height) |
583 | while (cinfo.output_scanline < cinfo.output_height) |
251 | { |
584 | { |
… | |
… | |
258 | rp [3] = (guchar *)rp [2] + rs; |
591 | rp [3] = (guchar *)rp [2] + rs; |
259 | |
592 | |
260 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
593 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
261 | } |
594 | } |
262 | |
595 | |
|
|
596 | 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 | 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 | |
|
|
621 | data += 4; |
|
|
622 | } |
|
|
623 | } |
|
|
624 | |
263 | jpeg_finish_decompress (&cinfo); |
625 | jpeg_finish_decompress (&cinfo); |
264 | fclose (fp); |
|
|
265 | jpeg_destroy_decompress (&cinfo); |
626 | jpeg_destroy_decompress (&cinfo); |
|
|
627 | perlinterp_acquire (); |
266 | } |
628 | } |
267 | OUTPUT: |
629 | OUTPUT: |
268 | RETVAL |
630 | RETVAL |
269 | |
631 | |
|
|
632 | void |
|
|
633 | compare (GdkPixbuf *a, GdkPixbuf *b) |
|
|
634 | PPCODE: |
|
|
635 | perlinterp_release (); |
|
|
636 | { |
|
|
637 | int w = gdk_pixbuf_get_width (a); |
|
|
638 | int h = gdk_pixbuf_get_height (a); |
|
|
639 | |
|
|
640 | 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 | if (w && h) |
|
|
658 | for (y = 0; y < h; y++) |
|
|
659 | { |
|
|
660 | guchar *pa_ = pa + y * sa; |
|
|
661 | guchar *pb_ = pb + y * sb; |
|
|
662 | |
|
|
663 | 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 | |
|
|
673 | perlinterp_acquire (); |
|
|
674 | |
|
|
675 | EXTEND (SP, 2); |
|
|
676 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
|
|
677 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
|
|
678 | } |
|
|
679 | |
270 | ############################################################################# |
680 | ############################################################################# |
271 | |
681 | |
272 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
682 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
|
|
683 | |
|
|
684 | # currently only works for filenames (octet strings) |
273 | |
685 | |
274 | SV * |
686 | SV * |
275 | foldcase (SV *pathsv) |
687 | foldcase (SV *pathsv) |
276 | PROTOTYPE: $ |
688 | PROTOTYPE: $ |
277 | CODE: |
689 | CODE: |
278 | { |
690 | { |
279 | STRLEN plen; |
691 | STRLEN plen; |
280 | U8 *path = SvPVutf8 (pathsv, plen); |
692 | U8 *path = (U8 *)SvPV (pathsv, plen); |
281 | U8 *pend = path + plen; |
693 | U8 *pend = path + plen; |
282 | U8 dst [plen * 6 * 3], *dstp = dst; |
694 | U8 dst [plen * 6 * 3], *dstp = dst; |
283 | |
695 | |
284 | while (path < pend) |
696 | while (path < pend) |
285 | { |
697 | { |
|
|
698 | U8 ch = *path; |
|
|
699 | |
286 | if (*path >= '0' && *path <= '9') |
700 | if (ch >= 'a' && ch <= 'z') |
|
|
701 | *dstp++ = *path++; |
|
|
702 | else if (ch >= 'A' && ch <= 'Z') |
|
|
703 | *dstp++ = *path++ + ('a' - 'A'); |
|
|
704 | else if (ch >= '0' && ch <= '9') |
287 | { |
705 | { |
288 | STRLEN el, nl = 0; |
706 | STRLEN el, nl = 0; |
289 | while (*path >= '0' && *path <= '9') |
707 | while (*path >= '0' && *path <= '9' && path < pend) |
290 | path++, nl++; |
708 | path++, nl++; |
291 | |
709 | |
292 | for (el = nl; el < 6; el++) |
710 | for (el = nl; el < 6; el++) |
293 | *dstp++ = '0'; |
711 | *dstp++ = '0'; |
294 | |
712 | |
295 | memcpy (dstp, path - nl, nl); |
713 | memcpy (dstp, path - nl, nl); |
296 | dstp += nl; |
714 | dstp += nl; |
297 | } |
715 | } |
|
|
716 | else |
|
|
717 | *dstp++ = *path++; |
|
|
718 | #if 0 |
298 | else |
719 | else |
299 | { |
720 | { |
300 | STRLEN cl; |
721 | STRLEN cl; |
301 | to_utf8_fold (path, dstp, &cl); |
722 | to_utf8_fold (path, dstp, &cl); |
302 | dstp += cl; |
723 | dstp += cl; |
303 | path += is_utf8_char (path); |
724 | path += is_utf8_char (path); |
304 | } |
725 | } |
|
|
726 | #endif |
305 | } |
727 | } |
306 | |
728 | |
307 | RETVAL = newSVpvn (dst, dstp - dst); |
729 | RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
308 | } |
730 | } |
309 | OUTPUT: |
731 | OUTPUT: |
310 | RETVAL |
732 | RETVAL |
311 | |
733 | |
312 | GdkPixbuf_noinc * |
734 | GdkPixbuf_noinc * |
313 | p7_to_pb (int w, int h, guchar *src) |
735 | p7_to_pb (int w, int h, SV *src_sv) |
|
|
736 | PROTOTYPE: @ |
314 | CODE: |
737 | CODE: |
315 | { |
738 | { |
316 | int x, y; |
739 | int x, y; |
317 | guchar *dst, *d; |
740 | guchar *dst, *d; |
318 | int dstr; |
741 | int dstr; |
|
|
742 | guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
319 | |
743 | |
320 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
744 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
321 | dst = gdk_pixbuf_get_pixels (RETVAL); |
745 | dst = gdk_pixbuf_get_pixels (RETVAL); |
322 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
746 | dstr = gdk_pixbuf_get_rowstride (RETVAL); |
323 | |
747 | |
… | |
… | |
332 | } |
756 | } |
333 | } |
757 | } |
334 | OUTPUT: |
758 | OUTPUT: |
335 | RETVAL |
759 | RETVAL |
336 | |
760 | |
|
|
761 | ############################################################################# |
|
|
762 | |
|
|
763 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
764 | |
|
|
765 | void |
|
|
766 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
767 | 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 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
774 | 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 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
782 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
783 | |
|
|
784 | a85_finish (fp); |
|
|
785 | } |
|
|
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 | } |
|
|
804 | |
|
|
805 | ############################################################################# |
|
|
806 | |
|
|
807 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
808 | |
337 | SV * |
809 | SV * |
338 | pb_to_p7 (GdkPixbuf *pb) |
810 | pb_to_hv84 (GdkPixbuf *pb) |
339 | CODE: |
811 | CODE: |
340 | { |
812 | { |
341 | int w = gdk_pixbuf_get_width (pb); |
813 | int w = gdk_pixbuf_get_width (pb); |
342 | int h = gdk_pixbuf_get_height (pb); |
814 | int h = gdk_pixbuf_get_height (pb); |
343 | int x, y; |
815 | int x, y; |
344 | guchar *dst; |
816 | guchar *dst; |
345 | int bpp = gdk_pixbuf_get_n_channels (pb); |
817 | int bpp = gdk_pixbuf_get_n_channels (pb); |
346 | guchar *src = gdk_pixbuf_get_pixels (pb); |
818 | guchar *src = gdk_pixbuf_get_pixels (pb); |
347 | int sstr = gdk_pixbuf_get_rowstride (pb); |
819 | int sstr = gdk_pixbuf_get_rowstride (pb); |
348 | int Er[IW], Eg[IW], Eb[IW]; |
|
|
349 | int seed = 77; |
|
|
350 | |
|
|
351 | RETVAL = newSV (w * h); |
|
|
352 | SvPOK_only (RETVAL); |
|
|
353 | SvCUR_set (RETVAL, w * h); |
|
|
354 | |
|
|
355 | dst = SvPVX (RETVAL); |
|
|
356 | |
|
|
357 | memset (Er, 0, sizeof (int) * IW); |
|
|
358 | memset (Eg, 0, sizeof (int) * IW); |
|
|
359 | memset (Eb, 0, sizeof (int) * IW); |
|
|
360 | |
|
|
361 | /* some primitive error distribution + random dithering */ |
|
|
362 | |
|
|
363 | for (y = 0; y < h; y++) |
|
|
364 | { |
|
|
365 | int er = 0, eg = 0, eb = 0; |
|
|
366 | |
|
|
367 | for (x = 0; x < w; x++) |
|
|
368 | { |
|
|
369 | int r, g, b; |
|
|
370 | guchar *p = src + x * bpp + y * sstr; |
|
|
371 | |
|
|
372 | r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255; |
|
|
373 | g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255; |
|
|
374 | b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255; |
|
|
375 | |
|
|
376 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
|
|
377 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
|
|
378 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
|
|
379 | |
|
|
380 | er += p[0] - (r * 255 + 4) / 7; |
|
|
381 | eg += p[1] - (g * 255 + 4) / 7; |
|
|
382 | eb += p[2] - (b * 255 + 2) / 3; |
|
|
383 | |
|
|
384 | Er[x] = er >> 1; er -= (er + 1) >> 1; |
|
|
385 | Eg[x] = eg >> 1; eg -= (eg + 1) >> 1; |
|
|
386 | Eb[x] = eb >> 1; eb -= (eb + 1) >> 1; |
|
|
387 | |
|
|
388 | *dst++ = r << 5 | g << 2 | b; |
|
|
389 | } |
|
|
390 | } |
|
|
391 | } |
|
|
392 | OUTPUT: |
|
|
393 | RETVAL |
|
|
394 | |
|
|
395 | SV * |
|
|
396 | make_histogram (SV *ar) |
|
|
397 | CODE: |
|
|
398 | { |
|
|
399 | int i; |
|
|
400 | AV *av, *result; |
|
|
401 | |
|
|
402 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
403 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
404 | |
|
|
405 | av = (AV *) SvRV (ar); |
|
|
406 | result = newAV (); |
|
|
407 | |
|
|
408 | for (i = 0; i <= av_len (av); ++i) |
|
|
409 | { |
|
|
410 | const int HISTSIZE = 64; |
|
|
411 | |
|
|
412 | int j; |
|
|
413 | SV *sv = *av_fetch (av, i, 1); |
|
|
414 | STRLEN len; |
|
|
415 | char *buf = SvPVbyte (sv, len); |
|
|
416 | |
|
|
417 | int tmphist[HISTSIZE]; |
|
|
418 | float *hist; |
|
|
419 | |
|
|
420 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
421 | SvPOK_on (histsv); |
|
|
422 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
423 | hist = (float *)SvPVX (histsv); |
|
|
424 | |
|
|
425 | Zero (tmphist, sizeof (tmphist), char); |
|
|
426 | |
|
|
427 | for (j = len; j--; ) |
|
|
428 | { |
|
|
429 | unsigned int idx |
|
|
430 | = ((*buf & 0xc0) >> 2) |
|
|
431 | | ((*buf & 0x18) >> 1) |
|
|
432 | | (*buf & 0x03); |
|
|
433 | |
|
|
434 | ++tmphist[idx]; |
|
|
435 | ++buf; |
|
|
436 | } |
|
|
437 | |
|
|
438 | for (j = 0; j < HISTSIZE; ++j) |
|
|
439 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
440 | |
|
|
441 | av_push (result, histsv); |
|
|
442 | } |
|
|
443 | |
|
|
444 | RETVAL = newRV_noinc ((SV *)result); |
|
|
445 | } |
|
|
446 | OUTPUT: |
|
|
447 | RETVAL |
|
|
448 | |
|
|
449 | ############################################################################# |
|
|
450 | |
|
|
451 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
|
|
452 | |
|
|
453 | void |
|
|
454 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
|
|
455 | CODE: |
|
|
456 | { |
|
|
457 | int w = gdk_pixbuf_get_width (pb); |
|
|
458 | int h = gdk_pixbuf_get_height (pb); |
|
|
459 | int x, y, i; |
|
|
460 | guchar *dst; |
|
|
461 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
462 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
463 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
464 | |
|
|
465 | a85_init (); |
|
|
466 | |
|
|
467 | for (y = 0; y < h; y++) |
|
|
468 | for (x = 0; x < w; x++) |
|
|
469 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
470 | a85_push (fp, src [x * bpp + y * sstr + i]); |
|
|
471 | |
|
|
472 | a85_finish (fp); |
|
|
473 | } |
|
|
474 | |
|
|
475 | void |
|
|
476 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
477 | CODE: |
|
|
478 | { |
|
|
479 | int w = gdk_pixbuf_get_width (pb); |
|
|
480 | int h = gdk_pixbuf_get_height (pb); |
|
|
481 | int x, y, i; |
|
|
482 | guchar *dst; |
|
|
483 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
484 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
485 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
486 | |
|
|
487 | for (y = 0; y < h; y++) |
|
|
488 | for (x = 0; x < w; x++) |
|
|
489 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
490 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
491 | } |
|
|
492 | |
|
|
493 | ############################################################################# |
|
|
494 | |
|
|
495 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
496 | |
|
|
497 | SV * |
|
|
498 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
499 | CODE: |
|
|
500 | { |
|
|
501 | int w = gdk_pixbuf_get_width (pb); |
|
|
502 | int h = gdk_pixbuf_get_height (pb); |
|
|
503 | int x, y; |
|
|
504 | guchar *dst; |
|
|
505 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
506 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
507 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
508 | |
820 | |
509 | RETVAL = newSV (6 * 8 * 12 / 8); |
821 | RETVAL = newSV (6 * 8 * 12 / 8); |
510 | SvPOK_only (RETVAL); |
822 | SvPOK_only (RETVAL); |
511 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
823 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
512 | |
824 | |
513 | dst = SvPVX (RETVAL); |
825 | dst = (guchar *)SvPVX (RETVAL); |
514 | |
826 | |
515 | /* some primitive error distribution + random dithering */ |
827 | /* some primitive error distribution + random dithering */ |
516 | |
828 | |
517 | for (y = 0; y < h; y++) |
829 | for (y = 0; y < h; y++) |
518 | { |
830 | { |
… | |
… | |
576 | } |
888 | } |
577 | } |
889 | } |
578 | OUTPUT: |
890 | OUTPUT: |
579 | RETVAL |
891 | RETVAL |
580 | |
892 | |
|
|
893 | ############################################################################# |
581 | |
894 | |
|
|
895 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
582 | |
896 | |
|
|
897 | SV * |
|
|
898 | 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 | croak ("Not an array ref as first argument to extract_features"); |
|
|
906 | |
|
|
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 | hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
|
|
969 | |
|
|
970 | av_push (result, histsv); |
|
|
971 | } |
|
|
972 | |
|
|
973 | RETVAL = newRV_noinc ((SV *)result); |
|
|
974 | } |
|
|
975 | OUTPUT: |
|
|
976 | RETVAL |
|
|
977 | |