// Print information regarding a stream
static void PrintStreamInfo(DiscovererStreamInfo info, int depth)
{
var caps = info.Caps;
string desc = null;
if (caps != null)
{
if (caps.IsFixed)
{
desc = Gst.PbUtils.Global.PbUtilsGetCodecDescription(caps);
}
else
{
desc = caps.ToString();
}
}
Console.WriteLine("{0}{1}: {2}", new string (' ', 2 * depth), info.StreamTypeNick, (desc != null ? desc : ""));
var tags = info.Tags;
if (tags != null)
{
Console.WriteLine("{0}Tags:", new string (' ', 2 * (depth + 1)));
tags.Foreach((TagForeachFunc) delegate(TagList list, string tag) {
PrintTagForeach(list, tag, depth + 2);
});
}
}
/// <summary>
/// Print information regarding a stream and its substreams, if any
/// </summary>
static void PrintTopology(DiscovererStreamInfo info, int depth)
{
if (info == null)
{
return;
}
PrintStreamInfo(info, depth);
DiscovererStreamInfo next = info.Next;
if (next != null)
{
PrintTopology(next, depth + 1);
next.Dispose();
}
else if (info is DiscovererContainerInfo)
{
var streams = ((DiscovererContainerInfo)info).Streams;
foreach (var stream in streams)
{
PrintTopology(stream, depth + 1);
}
}
}
/// <summary>
/// This function is called every time the discoverer has information regarding one of the URIs we provided.
/// </summary>
static void OnDiscoveredCb(object o, DiscoveredArgs args)
{
var discoverer = o as Discoverer;
var info = args.Info;
var uri = info.Uri;
var result = info.Result;
switch (result)
{
case DiscovererResult.UriInvalid:
$"Invalid uri {uri}".PrintErr();
break;
case DiscovererResult.Error:
var err = new GLib.GException(args.Error);
$"Discoverer error {err.Message}".PrintErr();
break;
case DiscovererResult.Timeout:
Console.WriteLine("Timeout");
break;
case DiscovererResult.Busy:
Console.WriteLine("Busy");
break;
case DiscovererResult.MissingPlugins:
var s = info.Misc;
if (s != null)
{
Console.WriteLine($"Missing plugins {s}");
}
break;
case DiscovererResult.Ok:
Console.WriteLine($"Discovered {uri}");
break;
}
if (result != DiscovererResult.Ok)
{
"This URI cannot be played".PrintErr();
return;
}
// If we got no error, show the retrieved information
var duration = new TimeSpan((long)info.Duration);
Console.WriteLine($"Duration {duration}");
var tags = info.Tags;
if (tags != null)
{
Console.WriteLine("Tags: ");
tags.Foreach(PrintTagForeach);
}
Console.WriteLine("Seekable: {0}", info.Seekable ? "yes" : "no");
DiscovererStreamInfo sinfo = info.StreamInfo;
if (sinfo == null)
{
return;
}
Console.WriteLine("Stream information: ");
PrintTopology(sinfo, 1);
Console.WriteLine();
}
