static bool MessageLoop(Element element, ref TagList tags)
{
Bus bus = element.Bus;
bool done = false;
while (!done)
{
Message message = bus.Pop();
if (message == null)
{
break;
}
switch (message.Type)
{
case MessageType.Error:
string error;
message.ParseError(out error);
message.Dispose();
return(true);
case MessageType.Eos:
message.Dispose();
return(true);
case MessageType.Tag:
TagList new_tags = message.ParseTag();
if (tags != null)
{
tags = tags.Merge(new_tags, TagMergeMode.KeepAll);
new_tags.Dispose();
}
else
{
tags = new_tags;
}
break;
default:
break;
}
message.Dispose();
}
bus.Dispose();
return(true);
}
static void AnalyzeStreams()
{
// Read some properties
_data.NVideo = (int)_data.Playbin["n-video"];
_data.NAudio = (int)_data.Playbin["n-audio"];
_data.NText = (int)_data.Playbin["n-text"];
Console.WriteLine($"{_data.NVideo} video streams, {_data.NAudio} audio streams, {_data.NText} text streams");
string str;
for (int i = 0; i < _data.NVideo; i++)
{
// Retrieve the stream's video tags
using (TagList tags = (TagList)_data.Playbin.Emit("get-video-tags", i))
{
if (tags == null)
{
continue;
}
Console.WriteLine($"video stream {i}:");
if (tags.GetString(Gst.Constants.TAG_VIDEO_CODEC, out str))
{
Console.WriteLine(" codec: {0}", str ?? "unknown");
}
tags.Dispose();
}
}
for (int i = 0; i < _data.NAudio; i++)
{
// Retrieve the stream's audio tags
using (TagList tags = (TagList)_data.Playbin.Emit("get-audio-tags", i))
{
if (tags == null)
{
continue;
}
Console.WriteLine($"audio stream {i}:");
if (tags.GetString(Gst.Constants.TAG_AUDIO_CODEC, out str))
{
Console.WriteLine(" codec: {0}", str ?? "unknown");
}
if (tags.GetString(Gst.Constants.TAG_LANGUAGE_CODE, out str))
{
Console.WriteLine($" language: {str}");
}
if (tags.GetUint(Gst.Constants.TAG_BITRATE, out uint rate))
{
Console.WriteLine($" bitrage: {rate}");
}
}
}
for (int i = 0; i < _data.NText; i++)
{
//Retrieve the stream's subtitle tags
TagList tags = (TagList)_data.Playbin.Emit("get-text-tags", i);
{
if (tags == null)
{
continue;
}
Console.WriteLine("Subtitle stream: {0}", i);
if (tags.GetString(Gst.Constants.TAG_LANGUAGE_CODE, out str))
{
Console.WriteLine($" language: {str}");
}
}
}
_data.CurrentVideo = (int)_data.Playbin.GetProperty("current-video");
_data.CurrentAudio = (int)_data.Playbin.GetProperty("current-audio");
_data.CurrentText = (int)_data.Playbin.GetProperty("current-text");
Console.WriteLine($"Currently playing video stream {_data.CurrentVideo}, audio stream {_data.CurrentAudio} and text stream {_data.CurrentText}");
Console.WriteLine("Type any number and hit ENTER to select a different subtitle stream");
}
public static void Main(string [] args)
{
Application.Init();
if (args.Length < 1)
{
Console.WriteLine("Please give filenames to read metadata from\n\n");
return;
}
MakePipeline();
int i = -1;
while (++i < args.Length)
{
State state, pending;
TagList tags = null;
string filename = args[i];
if (!File.Exists(filename))
{
Console.WriteLine("File {0} does not exist", filename);
continue;
}
source["location"] = filename;
StateChangeReturn sret = pipeline.SetState(State.Paused);
if (sret == StateChangeReturn.Async)
{
if (StateChangeReturn.Success != pipeline.GetState(out state, out pending, Clock.Second * 5))
{
Console.WriteLine("State change failed for {0}. Aborting\n", filename);
break;
}
}
else if (sret != StateChangeReturn.Success)
{
Console.WriteLine("{0} - Could not read file ({1})\n", filename, sret);
continue;
}
if (!MessageLoop(pipeline, ref tags))
{
Console.Error.WriteLine("Failed in message reading for {0}", args[i]);
}
if (tags != null)
{
Console.WriteLine("Metadata for {0}:", filename);
foreach (string tag in tags.Tags)
{
PrintTag(tags, tag);
}
tags.Dispose();
tags = null;
}
else
{
Console.WriteLine("No metadata found for {0}", args[0]);
}
sret = pipeline.SetState(State.Null);
if (StateChangeReturn.Async == sret)
{
if (StateChangeReturn.Failure == pipeline.GetState(out state, out pending, Clock.TimeNone))
{
Console.WriteLine("State change failed. Aborting");
}
}
}
if (pipeline != null)
{
pipeline.Dispose();
}
}
void ReleaseDesignerOutlets()
{
if (AddTagButton != null)
{
AddTagButton.Dispose();
AddTagButton = null;
}
if (ArrangerBox != null)
{
ArrangerBox.Dispose();
ArrangerBox = null;
}
if (BackgroundBox != null)
{
BackgroundBox.Dispose();
BackgroundBox = null;
}
if (BookmarkLabelBox != null)
{
BookmarkLabelBox.Dispose();
BookmarkLabelBox = null;
}
if (BookmarkList != null)
{
BookmarkList.Dispose();
BookmarkList = null;
}
if (BookmarkMeasureBox != null)
{
BookmarkMeasureBox.Dispose();
BookmarkMeasureBox = null;
}
if (ComposerBox != null)
{
ComposerBox.Dispose();
ComposerBox = null;
}
if (CopyrightBox != null)
{
CopyrightBox.Dispose();
CopyrightBox = null;
}
if (DifficultyBox != null)
{
DifficultyBox.Dispose();
DifficultyBox = null;
}
if (FingerHintBox != null)
{
FingerHintBox.Dispose();
FingerHintBox = null;
}
if (HandsBox != null)
{
HandsBox.Dispose();
HandsBox = null;
}
if (LicenseBox != null)
{
LicenseBox.Dispose();
LicenseBox = null;
}
if (MadeFamousByBox != null)
{
MadeFamousByBox.Dispose();
MadeFamousByBox = null;
}
if (PartsBox != null)
{
PartsBox.Dispose();
PartsBox = null;
}
if (PropertiesGroup != null)
{
PropertiesGroup.Dispose();
PropertiesGroup = null;
}
if (RatingBox != null)
{
RatingBox.Dispose();
RatingBox = null;
}
if (RemoveBookmarkButton != null)
{
RemoveBookmarkButton.Dispose();
RemoveBookmarkButton = null;
}
if (RemoveTagButton != null)
{
RemoveTagButton.Dispose();
RemoveTagButton = null;
}
if (RetargetButton != null)
{
RetargetButton.Dispose();
RetargetButton = null;
}
if (SongList != null)
{
SongList.Dispose();
SongList = null;
}
if (SubtitleBox != null)
{
SubtitleBox.Dispose();
SubtitleBox = null;
}
if (TagBox != null)
{
TagBox.Dispose();
TagBox = null;
}
if (TagList != null)
{
TagList.Dispose();
TagList = null;
}
if (TitleBox != null)
{
TitleBox.Dispose();
TitleBox = null;
}
if (UniqueIdBox != null)
{
UniqueIdBox.Dispose();
UniqueIdBox = null;
}
}