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/*
* Copyright (C) 2009 Nokia Corporation.
*
* Author: Zeeshan Ali (Khattak) <zeeshanak@gnome.org>
* <zeeshan.ali@nokia.com>
*
* This file is part of Rygel.
*
* Rygel is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Rygel 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
using Gst;
using Gst.PbUtils;
internal errordomain Rygel.GstError {
MISSING_PLUGIN,
LINK
}
internal abstract class Rygel.GstUtils {
public static Element create_element (string factoryname,
string? name)
throws Error {
Element element = ElementFactory.make (factoryname, name);
if (element == null) {
throw new GstError.MISSING_PLUGIN
(_("Required element %s missing"),
factoryname);
}
return element;
}
public static Element? create_source_for_uri (string uri) {
try {
dynamic Element src;
if (uri.has_prefix ("gst-launch://")) {
var description = uri.replace ("gst-launch://", "");
description = Soup.URI.decode (description);
src = Gst.parse_bin_from_description (description, true);
} else if (uri.has_prefix ("dvd://")) {
src = ElementFactory.make ("dvdreadsrc", "dvdreadsrc");
if (src == null) {
warning (_("GStreamer element “dvdreadsrc” not found. DVD support does not work"));
return null;
}
var tmp = new Soup.URI (uri);
var query = Soup.Form.decode (tmp.query);
if (query.contains ("title")) {
src.title = int.parse (query.lookup ("title"));
}
src.device = Soup.URI.decode (tmp.path);
} else {
var file = File.new_for_uri (uri);
var path = file.get_path ();
if (path != null) {
src = Element.make_from_uri (URIType.SRC,
Filename.to_uri (path),
null);
} else {
src = Element.make_from_uri (URIType.SRC, uri, null);
}
}
if (src.get_class ().find_property ("blocksize") != null) {
// The default is usually 4KiB which is not really big enough
// for most cases so we set this to 65KiB.
src.blocksize = (long) 65536;
}
if (src.get_class ().find_property ("tcp-timeout") != null) {
// For rtspsrc since some RTSP sources takes a while to start
// transmitting
src.tcp_timeout = (int64) 60000000;
}
return src;
} catch (Error error) {
return null;
}
}
public static void dump_encoding_profile (EncodingProfile profile,
int indent = 2) {
var indent_s = string.nfill (indent, ' ');
debug (indent_s + "%s:", profile.get_name ());
debug (indent_s + " Format: %s", profile.get_format ().to_string ());
if (profile.get_restriction () != null) {
debug (indent_s + " Restriction: %s",
profile.get_restriction ().to_string ());
}
if (profile is EncodingContainerProfile) {
var container = profile as EncodingContainerProfile;
foreach (var subprofile in container.get_profiles ()) {
dump_encoding_profile (subprofile, indent + 4);
}
}
}
public static dynamic Element? get_rtp_depayloader (Caps caps) {
if (!need_rtp_depayloader (caps)) {
return null;
}
var features = ElementFactory.list_get_elements
(ElementFactoryType.DEPAYLOADER,
Rank.NONE);
features = ElementFactory.list_filter (features,
caps,
PadDirection.SINK,
false);
if (features == null) {
return null;
}
// If most "fitting" depayloader was rtpdepay skip it because it is
// just some kind of proxy.
if (features.data.get_name () == "rtpdepay") {
if (features.next != null) {
return features.next.data.create (null);
}
return null;
} else {
return features.data.create (null);
}
}
private static bool need_rtp_depayloader (Caps caps) {
unowned Structure structure = caps.get_structure (0);
return structure.get_name () == "application/x-rtp";
}
}
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