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-rw-r--r--convert/gdk-pixbuf-convert/gdk-pixbuf-convert.c226
1 files changed, 226 insertions, 0 deletions
diff --git a/convert/gdk-pixbuf-convert/gdk-pixbuf-convert.c b/convert/gdk-pixbuf-convert/gdk-pixbuf-convert.c
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+++ b/convert/gdk-pixbuf-convert/gdk-pixbuf-convert.c
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+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+
+/*
+ * gdk-pixbuf-convert.c gdk pixbuf replacement for convert geometry commands
+ *
+ * Copyright (C) 2003 Ximian Inc.
+ *
+ * Author: Larry Ewing <lewing@ximian.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * build with
+ * gcc `pkg-config --cflags gdk-pixbuf-2.0` gdk-pixbuf-convert.c -o gdk-pixbuf-convert `pkg-config --libs gdk-pixbuf-2.0`
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <glib-object.h>
+
+#define d(x) x
+
+typedef enum {
+ SAVE_JPG,
+ SAVE_PNG
+} OutputType;
+
+GdkPixbuf *
+scale (GdkPixbuf *src, char *geom)
+{
+ GdkPixbuf *dest = NULL;
+ char *s, *e;
+ guint w;
+ guint h;
+ guint src_w, dest_w;
+ guint src_h, dest_h;
+ double scale_w = 1.0;
+ double scale_h = 1.0;
+ gboolean force = FALSE;
+
+ src_w = gdk_pixbuf_get_width (src);
+ src_h = gdk_pixbuf_get_height (src);
+
+ /* d(printf ("%d %d ", src_w, src_h);) */
+
+ s = e = geom;
+
+ w = strtol (s, &e, 10);
+ /* d(printf ("%d ", w);) */
+ if (e != s) {
+ scale_w = w / (double)src_w;
+ } else {
+ w = 100;
+ }
+
+
+ if (*e == 'x')
+ e++;
+ else
+ return NULL;
+
+ s = e;
+
+ h = strtol (s, &e, 10);
+ /* d(printf ("%d ", h);) */
+ if (e != s) {
+ scale_h = h / (double)src_h;
+ } else {
+ h = 100;
+ }
+
+ if (*e == '%') {
+ scale_h = h / 100.0;
+ scale_w = w / 100.0;
+ e++;
+ }
+
+ /* d(printf ("%f %f\n", scale_w, scale_h);) */
+
+ while (*e) {
+ switch (*e) {
+ case '!':
+ force = TRUE;
+ break;
+ case '>':
+ if (scale_w >= 1.0 && scale_h >= 1.0)
+ scale_w = scale_h = 1.0;
+ break;
+ case '<':
+ if (scale_w < 1.0 || scale_h <= 1.0)
+ scale_w = scale_h = 1.0;
+ break;
+ default:
+ break;
+ }
+ e++;
+ }
+
+ if (!force) {
+ /* Keep aspect ratio */
+ scale_w = scale_h = MIN (scale_h, scale_w);
+ }
+
+ dest_w = (int)(src_w * scale_w + 0.5);
+ dest_h = (int)(src_h * scale_h + 0.5);
+
+ /* printf ("%dx%d\n", dest_w, dest_h); */
+
+ /* dest = gdk_pixbuf_scale_simple (src, dest_w, dest_h, GDK_INTERP_BILINEAR);*/
+ dest = gdk_pixbuf_scale_simple (src, dest_w, dest_h, GDK_INTERP_HYPER);
+
+ return dest;
+}
+
+OutputType
+get_filetype (char *filename)
+{
+ gint len = strlen (filename);
+
+ if (len > 4 && g_ascii_strncasecmp (filename + len - 4, ".png", 4)== 0)
+ return SAVE_PNG;
+ else
+ return SAVE_JPG;
+}
+
+int
+convert (char *geom, char *quality, char *sfile, char *dfile)
+{
+ GdkPixbuf *src;
+ GdkPixbuf *dest;
+ GError *error = NULL;
+
+ src = gdk_pixbuf_new_from_file (sfile, &error);
+
+ if (!src) {
+ fprintf (stderr, "Unable to open input file");
+ return 1;
+ }
+
+ if (geom) {
+ dest = scale (src, geom);
+ } else {
+ dest = src;
+ g_object_ref (dest);
+ }
+
+ if (!dest)
+ return 1;
+
+ unlink (dfile);
+ if (get_filetype (dfile) == SAVE_JPG)
+ gdk_pixbuf_save (dest, dfile, "jpeg", &error,
+ "quality", quality, NULL);
+ else
+ gdk_pixbuf_save (dest, dfile, "png", &error, NULL);
+
+ g_object_unref (src);
+ g_object_unref (dest);
+
+ if (error) {
+ return 1;
+ }
+
+ return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+ char *dfile;
+ char *sfile;
+ char *geom = NULL;
+ char *quality = "100";
+
+ g_type_init ();
+
+ if (argc > 4) {
+ int i = 1;
+ if (!g_ascii_strcasecmp (argv[i], "-geometry")) {
+ i++;
+ geom = argv[i++];
+ if (argc < 5)
+ goto usage;
+ }
+ if (!g_ascii_strcasecmp (argv[i], "-quality")) {
+ i++;
+ quality = argv[i++];
+ if (argc < 7)
+ goto usage;
+ if ((atoi(quality) < 0) || (atoi(quality) > 100)) {
+ g_print ("Value for '-quality' must be in range 0-100!\n");
+ goto usage;
+ }
+ }
+ sfile = argv[i++];
+ dfile = argv[i++];
+ } else {
+ goto usage;
+ }
+
+ return convert (geom, quality, sfile, dfile);
+
+ usage:
+ g_print ("Usage:\n");
+ g_print (" gdk-pixbuf-convert -geometry <X>x<Y> [-quality <0-100>] <input> <output>\n");
+ g_print ("\n");
+ g_print ("Example:\n");
+ g_print (" gdk-pixbuf-convert -geometry 120x120 -quality 75 foo.jpg bar.jpg\n");
+ exit (2);
+}