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/* GStreamer
* Copyright (C) 2003 Thomas Vander Stichele <thomas@apestaart.org>
* 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
* 2005 Andy Wingo <wingo@pobox.com>
*
* gst-typefind.c: Use GStreamer to find the type of a file
*
* 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 <string.h>
#include <stdlib.h>
#include <locale.h>
#include <gst/gst.h>
char *filename = NULL;
void
have_type_handler (GstElement * typefind, guint probability,
const GstCaps * caps, gpointer unused)
{
gchar *caps_str;
caps_str = gst_caps_to_string (caps);
g_print ("%s - %s\n", filename, caps_str);
g_free (caps_str);
}
int
main (int argc, char *argv[])
{
guint i = 1;
GstElement *pipeline;
GstElement *source, *typefind, *fakesink;
setlocale (LC_ALL, "");
gst_init (&argc, &argv);
if (argc < 2) {
g_print ("Please give a filename to typefind\n\n");
return 1;
}
pipeline = gst_pipeline_new (NULL);
source = gst_element_factory_make ("filesrc", "source");
g_assert (GST_IS_ELEMENT (source));
typefind = gst_element_factory_make ("typefind", "typefind");
g_assert (GST_IS_ELEMENT (typefind));
fakesink = gst_element_factory_make ("fakesink", "fakesink");
g_assert (GST_IS_ELEMENT (typefind));
gst_bin_add_many (GST_BIN (pipeline), source, typefind, fakesink, NULL);
gst_element_link_many (source, typefind, fakesink, NULL);
g_signal_connect (G_OBJECT (typefind), "have-type",
G_CALLBACK (have_type_handler), NULL);
while (i < argc) {
GstStateChangeReturn sret;
GstState state;
filename = argv[i];
g_object_set (source, "location", filename, NULL);
GST_DEBUG ("Starting typefinding for %s", filename);
/* typefind will only commit to PAUSED if it actually finds a type;
* otherwise the state change fails */
sret = gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PAUSED);
if (GST_STATE_CHANGE_ASYNC == sret) {
if (GST_STATE_CHANGE_FAILURE ==
gst_element_get_state (GST_ELEMENT (pipeline), &state, NULL, NULL))
break;
} else if (sret != GST_STATE_CHANGE_SUCCESS)
g_print ("%s - No type found\n", argv[i]);
if (GST_STATE_CHANGE_ASYNC ==
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL)) {
if (GST_STATE_CHANGE_FAILURE ==
gst_element_get_state (GST_ELEMENT (pipeline), &state, NULL, NULL))
break;
}
i++;
}
gst_object_unref (pipeline);
return 0;
}
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