xdgmime: Add new typefinder based on xdgmime

This typefinder is mostly useful to filter out any false positives
by the other typefinders like the usual Word document misdetected as
MP3 file.

1 files changed, 68 insertions, 0 deletions

diff --git a/gst/xdgmime/gstxdgmime.c b/gst/xdgmime/gstxdgmime.c
new file mode 100644
index 00000000..1d7536c3
--- /dev/null
+++ b/gst/xdgmime/gstxdgmime.c
@@ -0,0 +1,68 @@
+/* GStreamer
+ * Copyright (C) <2009> Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include "xdgmime/xdgmime.h"
+
+GST_DEBUG_CATEGORY (xdgmime_debug);
+#define GST_CAT_DEFAULT xdgmime_debug
+
+static void
+xdgmime_typefind (GstTypeFind * find, gpointer user_data)
+{
+  const gchar *mimetype;
+  gsize length = 16384;
+  guint64 tf_length;
+  gint prio;
+  guint8 *data;
+  GstCaps *caps;
+
+  if ((tf_length = gst_type_find_get_length (find)) > 0)
+    length = MIN (length, tf_length);
+
+  if ((data = gst_type_find_peek (find, 0, length)) == NULL)
+    return;
+
+  mimetype = xdg_mime_get_mime_type_for_data (data, length, &prio);
+  if (mimetype == NULL || g_str_equal (mimetype, XDG_MIME_TYPE_UNKNOWN))
+    return;
+
+  GST_DEBUG ("Got mimetype '%s' with prio %d", mimetype, prio);
+
+  caps = gst_caps_new_simple (mimetype, NULL);
+  gst_type_find_suggest (find, GST_TYPE_FIND_LIKELY, caps);
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  GST_DEBUG_CATEGORY_INIT (xdgmime_debug, "xdgmime", 0, "XDG-MIME");
+
+  return gst_type_find_register (plugin,
+      "xdgmime", GST_RANK_MARGINAL, xdgmime_typefind, NULL, NULL, NULL, NULL);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "xdgmime",
+    "XDG-MIME",
+    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)