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