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e040bb2dbe
Original commit message from CVS: 2005-09-02 Andy Wingo <wingo@pobox.com> * gst/gstelement.h (GstState): Renamed from GstElementState, changed to be a normal enum instead of flags. (GstStateChangeReturn): Renamed from GstElementStateReturn, names munged to be GST_STATE_CHANGE_*. (GST_STATE_CHANGE): Renamed from GST_STATE_TRANSITION, updated to work with the new state representation. (GstStateChange): New enumeration of possible state transitions. Replaces GST_STATE_FOO_TO_BAR with GST_STATE_CHANGE_FOO_TO_BAR. (GstElementClass::change_state): Pass the GstStateChange along as an argument. Helps language bindings, so they don't have to use tricky lock-needing macros like GST_STATE_CHANGE (). * scripts/update-states (file): New script. Run it on a file to update it for state naming and API changes. Updates files in place. * All files updated for the new API.
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/* GStreamer
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* Copyright (C) 2003 Thomas Vander Stichele <thomas@apestaart.org>
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* 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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* 2005 Andy Wingo <wingo@pobox.com>
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*
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* gst-typefind.c: Use GStreamer to find the type of a file
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <locale.h>
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#include <gst/gst.h>
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char *filename = NULL;
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void
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have_type_handler (GstElement * typefind, guint probability,
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const GstCaps * caps, gpointer unused)
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{
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gchar *caps_str;
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caps_str = gst_caps_to_string (caps);
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g_print ("%s - %s\n", filename, caps_str);
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g_free (caps_str);
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}
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int
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main (int argc, char *argv[])
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{
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guint i = 1;
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GstElement *pipeline;
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GstElement *source, *typefind, *fakesink;
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setlocale (LC_ALL, "");
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gst_init (&argc, &argv);
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if (argc < 2) {
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g_print ("Please give a filename to typefind\n\n");
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return 1;
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}
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pipeline = gst_pipeline_new (NULL);
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source = gst_element_factory_make ("filesrc", "source");
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g_assert (GST_IS_ELEMENT (source));
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typefind = gst_element_factory_make ("typefind", "typefind");
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g_assert (GST_IS_ELEMENT (typefind));
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fakesink = gst_element_factory_make ("fakesink", "fakesink");
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g_assert (GST_IS_ELEMENT (typefind));
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gst_bin_add_many (GST_BIN (pipeline), source, typefind, fakesink, NULL);
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gst_element_link_many (source, typefind, fakesink, NULL);
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g_signal_connect (G_OBJECT (typefind), "have-type",
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G_CALLBACK (have_type_handler), NULL);
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while (i < argc) {
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GstStateChangeReturn sret;
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GstState state;
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filename = argv[i];
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g_object_set (source, "location", filename, NULL);
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GST_DEBUG ("Starting typefinding for %s", filename);
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/* typefind will only commit to PAUSED if it actually finds a type;
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* otherwise the state change fails */
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sret = gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PAUSED);
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if (GST_STATE_CHANGE_ASYNC == sret) {
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if (GST_STATE_CHANGE_FAILURE ==
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gst_element_get_state (GST_ELEMENT (pipeline), &state, NULL, NULL))
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break;
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} else if (sret != GST_STATE_CHANGE_SUCCESS)
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g_print ("%s - No type found\n", argv[i]);
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if (GST_STATE_CHANGE_ASYNC ==
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL)) {
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if (GST_STATE_CHANGE_FAILURE ==
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gst_element_get_state (GST_ELEMENT (pipeline), &state, NULL, NULL))
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break;
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}
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i++;
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}
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gst_object_unref (pipeline);
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return 0;
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}
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