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Don't leak the bus. Don't parse messages with the method for errors (triggers gobject warning).
135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/* GStreamer typefind element example
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* Copyright (C) <2005> Stefan Kost
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* Copyright (C) <2006> Tim-Philipp Müller
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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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#include <gst/gst.h>
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#include <stdlib.h>
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static void
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type_found (GstElement * typefind, guint probability, const GstCaps * caps,
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gpointer user_data)
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{
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gchar *xml, *caps_str;
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caps_str = gst_caps_to_string (caps);
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xml = g_markup_printf_escaped ("<?xml version=\"1.0\"?>\n<Capabilities>\n"
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" <Caps1>%s</Caps1>\n</Capabilities>", caps_str);
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g_free (caps_str);
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g_print ("%s\n", xml);
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g_free (xml);
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}
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static void
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event_loop (GstElement * pipe)
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{
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GstBus *bus;
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GstMessage *message = NULL;
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gboolean running = TRUE;
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bus = gst_element_get_bus (GST_ELEMENT (pipe));
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while (running) {
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message = gst_bus_poll (bus, GST_MESSAGE_ANY, -1);
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g_assert (message != NULL);
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switch (message->type) {
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case GST_MESSAGE_EOS:
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running = FALSE;
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break;
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case GST_MESSAGE_WARNING:{
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GError *gerror;
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gchar *debug;
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gst_message_parse_warning (message, &gerror, &debug);
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gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
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g_error_free (gerror);
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g_free (debug);
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break;
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}
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case GST_MESSAGE_ERROR:{
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GError *gerror;
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gchar *debug;
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gst_message_parse_error (message, &gerror, &debug);
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gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
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g_error_free (gerror);
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g_free (debug);
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running = FALSE;
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break;
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}
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default:
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break;
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}
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gst_message_unref (message);
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}
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gst_object_unref (bus);
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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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GstElement *pipeline, *filesrc, *typefind, *sink;
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gst_init (&argc, &argv);
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if (argc != 2) {
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g_print ("usage: %s <filename>\n", argv[0]);
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exit (-1);
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}
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/* create a new pipeline to hold the elements */
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pipeline = gst_pipeline_new ("pipeline");
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g_assert (pipeline != NULL);
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/* create a file reader */
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filesrc = gst_element_factory_make ("filesrc", "file_source");
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g_assert (filesrc != NULL);
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g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
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typefind = gst_element_factory_make ("typefind", "typefind");
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g_assert (typefind != NULL);
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sink = gst_element_factory_make ("fakesink", "sink");
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g_assert (sink != NULL);
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/* add objects to the main pipeline */
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gst_bin_add (GST_BIN (pipeline), filesrc);
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gst_bin_add (GST_BIN (pipeline), typefind);
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gst_bin_add (GST_BIN (pipeline), sink);
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g_signal_connect (G_OBJECT (typefind), "have-type",
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G_CALLBACK (type_found), NULL);
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gst_element_link_many (filesrc, typefind, sink, NULL);
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/* start playing */
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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/* Run event loop listening for bus messages until EOS or ERROR */
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event_loop (pipeline);
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/* stop the bin */
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gst_element_set_state (pipeline, GST_STATE_NULL);
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gst_object_unref (pipeline);
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exit (0);
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}
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