Include gegl example code to read and write files.

1 files changed, 59 insertions, 0 deletions

diff --git a/src/gegltest.c b/src/gegltest.c
new file mode 100644
index 0000000..4201556
--- /dev/null
+++ b/src/gegltest.c
@@ -0,0 +1,59 @@
+#include <gegl.h> 
+
+gint
+main (gint    argc,
+      gchar **argv)
+{
+  GeglNode *graph, *src, *sink;
+  GeglBuffer *buffer = NULL;
+
+  gegl_init (&argc, &argv);
+
+  if (argc != 3)
+    {
+      g_print ("GEGL based image conversion tool\n");
+      g_print ("Usage: %s <imageA> <imageB>\n", argv[0]);
+      return 1;
+    }
+
+  graph = gegl_node_new ();
+  src   = gegl_node_new_child (graph,
+                               "operation", "gegl:load",
+                               "path", argv[1],
+                                NULL);
+  sink  = gegl_node_new_child (graph,
+                               "operation", "gegl:buffer-sink",
+                               "buffer", &buffer,
+                                NULL);
+
+  gegl_node_link_many (src, sink, NULL);
+
+  gegl_node_process (sink);
+  g_object_unref (graph);
+
+  /* FIXME: Currently a buffer will always be returned, even if the source is missing */
+  if (!buffer)
+    {
+      g_print ("Failed to open %s\n", argv[1]);
+      return 1;
+    }
+
+  graph = gegl_node_new ();
+  src   = gegl_node_new_child (graph,
+                               "operation", "gegl:buffer-source",
+                               "buffer", buffer,
+                                NULL);
+  sink  = gegl_node_new_child (graph,
+                               "operation", "gegl:save",
+                               "path", argv[2],
+                                NULL);
+
+  gegl_node_link_many (src, sink, NULL);
+
+  gegl_node_process (sink);
+  g_object_unref (graph);
+
+  g_object_unref (buffer); 
+  gegl_exit ();
+  return 0;
+}