1 /* -*- Mode: C; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 3 -*- */
2
3 /*
4 * XVPICS image saver plugin for GImageView
5 * Copyright (C) 2001 Takuro Ashie
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 */
21
22 #include <stdio.h>
23 #include <png.h>
24
25 #include "gimv_image.h"
26
27 #include "dither.h"
28 #include "gimv_plugin.h"
29 #include "gimv_image_saver.h"
30
31 static gboolean save_xvpics (GimvImageSaver *saver,
32 GimvImage *image,
33 const gchar *filename,
34 const gchar *format);
35
36 static GimvImageSaverPlugin plugin_impl[] =
37 {
38 {GIMV_IMAGE_SAVER_IF_VERSION, "xvpic", save_xvpics, NULL},
39 {GIMV_IMAGE_SAVER_IF_VERSION, "xvpics", save_xvpics, NULL},
40 };
41
42 GIMV_PLUGIN_GET_IMPL(plugin_impl, GIMV_PLUGIN_IMAGE_SAVER)
43
44 GimvPluginInfo gimv_plugin_info =
45 {
46 if_version: GIMV_PLUGIN_IF_VERSION,
47 name: N_("XVPICS Image Saver"),
48 version: "0.2.0",
49 author: N_("Takuro Ashie"),
50 description: NULL,
51 get_implement: gimv_plugin_get_impl,
52 get_mime_type: NULL,
53 get_prefs_ui: NULL,
54 };
55
56
57 static gboolean
save_xvpics(GimvImageSaver * saver,GimvImage * image,const gchar * filename,const gchar * format)58 save_xvpics (GimvImageSaver *saver,
59 GimvImage *image,
60 const gchar *filename,
61 const gchar *format)
62 {
63 GimvImageInfo *info;
64 FILE *handle;
65 gint width, height, rowstride;
66 guchar *pixels, *buf;
67 gboolean success;
68 gint orig_width = -1, orig_height = -1, orig_size = -1;
69 gint y;
70
71 g_return_val_if_fail (image, FALSE);
72 g_return_val_if_fail (filename, FALSE);
73 g_return_val_if_fail (filename[0] != '\0', FALSE);
74
75 handle = fopen(filename, "wb");
76 if (!handle)
77 return FALSE;
78
79 width = gimv_image_width (image);
80 height = gimv_image_height (image);
81 pixels = gimv_image_get_pixels (image);
82 rowstride = gimv_image_rowstride (image);
83
84 info = gimv_image_saver_get_image_info (saver);
85 if (info) {
86 gimv_image_info_get_image_size (info, &orig_width, &orig_height);
87 orig_size = info->st.st_size;
88 }
89 success = fprintf(handle,
90 "P7 332\n"
91 "#IMGINFO:%dx%d RGB (%d bytes)\n"
92 "#END_OF_COMMENTS\n"
93 "%d %d 255\n",
94 orig_width, orig_height, orig_size,
95 width, height);
96 if (!success) {
97 fclose(handle);
98 return FALSE;
99 }
100
101 buf = ditherinit (width);
102 for (y = 0; y < height; y++) {
103 ditherline(pixels + y * rowstride, y, width);
104 fwrite(buf, 1, width, handle);
105 }
106 ditherfinish();
107
108 fclose(handle);
109 return TRUE;
110 }
111