/* GStreamer * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #include <gst/gst.h> #include <string.h> static void warning_cb (GstBus * bus, GstMessage * msg, gpointer foo) { GError *err = NULL; gchar *dbg = NULL; gst_message_parse_warning (msg, &err, &dbg); g_printerr ("WARNING: %s (%s)\n", err->message, (dbg) ? dbg : "no details"); g_error_free (err); g_free (dbg); } static void error_cb (GstBus * bus, GstMessage * msg, GMainLoop * main_loop) { GError *err = NULL; gchar *dbg = NULL; gst_message_parse_error (msg, &err, &dbg); g_printerr ("ERROR: %s (%s)\n", err->message, (dbg) ? dbg : "no details"); g_main_loop_quit (main_loop); g_error_free (err); g_free (dbg); } static void eos_cb (GstBus * bus, GstMessage * msg, GMainLoop * main_loop) { g_print ("EOS\n"); g_main_loop_quit (main_loop); } static void state_cb (GstBus * bus, GstMessage * msg, GstElement * pipeline) { if (msg->src == GST_OBJECT (pipeline)) { GstState old_state, new_state, pending_state; gst_message_parse_state_changed (msg, &old_state, &new_state, &pending_state); if (new_state == GST_STATE_PLAYING) { g_print ("Decoding ...\n"); } } } static void new_decoded_pad_cb (GstElement * decodebin, GstPad * pad, gboolean last, GstElement * pipeline) { GstPadLinkReturn ret; GstElement *fakesink; GstPad *fakesink_pad; fakesink = gst_element_factory_make ("fakesink", NULL); fakesink_pad = gst_element_get_static_pad (fakesink, "sink"); gst_bin_add (GST_BIN (pipeline), fakesink); /* this doesn't really seem right, but it makes things work for me */ gst_element_set_state (fakesink, GST_STATE_PLAYING); ret = gst_pad_link (pad, fakesink_pad); if (!GST_PAD_LINK_SUCCESSFUL (ret)) { g_printerr ("Failed to link %s:%s to %s:%s (ret = %d)\n", GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (fakesink_pad), ret); } else { g_printerr ("Linked %s:%s to %s:%s\n", GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (fakesink_pad)); } gst_object_unref (fakesink_pad); } gint main (gint argc, gchar * argv[]) { GstElement *decoder; GstElement *source; GstElement *pipeline; GstStateChangeReturn res; GMainLoop *loop; GstBus *bus; gst_init (&argc, &argv); if (argc != 2) { g_printerr ("Decode file from start to end.\n"); g_printerr ("Usage: %s URI\n\n", argv[0]); return 1; } loop = g_main_loop_new (NULL, TRUE); pipeline = gst_pipeline_new ("pipeline"); bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); gst_bus_add_signal_watch (bus); g_signal_connect (bus, "message::eos", G_CALLBACK (eos_cb), loop); g_signal_connect (bus, "message::error", G_CALLBACK (error_cb), loop); g_signal_connect (bus, "message::warning", G_CALLBACK (warning_cb), NULL); g_signal_connect (bus, "message::state-changed", G_CALLBACK (state_cb), pipeline); source = gst_element_factory_make ("giosrc", "source"); g_assert (source); if (argv[1] && strstr (argv[1], "://") != NULL) { g_object_set (G_OBJECT (source), "location", argv[1], NULL); } else if (argv[1]) { gchar *uri = g_strdup_printf ("file://%s", argv[1]); g_object_set (G_OBJECT (source), "location", uri, NULL); g_free (uri); } decoder = gst_element_factory_make ("decodebin", "decoder"); g_assert (decoder); gst_bin_add (GST_BIN (pipeline), source); gst_bin_add (GST_BIN (pipeline), decoder); gst_element_link_pads (source, "src", decoder, "sink"); g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK (new_decoded_pad_cb), pipeline); res = gst_element_set_state (pipeline, GST_STATE_PLAYING); if (res == GST_STATE_CHANGE_FAILURE) { g_print ("could not play\n"); return -1; } g_main_loop_run (loop); /* tidy up */ gst_element_set_state (pipeline, GST_STATE_NULL); gst_object_unref (pipeline); gst_object_unref (bus); return 0; }