// This function is called when playbin has created the appsrc element, so we have a chance to configure it.
static void SourceSetup (object sender, GLib.SignalArgs args) {
var info = new Gst.Audio.AudioInfo ();
var source = new Gst.App.AppSrc(((Element)args.Args [0]).Handle);
Console.WriteLine ("Source has been created. Configuring.");
AppSource = source;
// Configure appsrc
Gst.Audio.AudioChannelPosition[] position = {};
info.SetFormat (Gst.Audio.AudioFormat.S16, SampleRate, 1, position);
var audioCaps = info.ToCaps ();
source ["caps"] = audioCaps;
source ["format"] = Format.Time;
source.NeedData += StartFeed;
source.EnoughData += StopFeed;
}
/// <summary>
/// This function is called when playbin has created the appsrc element, so we have
/// a chance to configure it.
/// </summary>
static void HandleSourceSetup(object o, GLib.SignalArgs args)
{
var pipeline = o as Pipeline;
Console.WriteLine("Source has been created. Configuring.");
//AppSource = (Element)args.Args[0];
_data.AppSource = new Gst.App.AppSrc(((Element)args.Args[0]).Handle);;
// Configure appsrc
var info = new Gst.Audio.AudioInfo();
Gst.Audio.AudioChannelPosition[] position = { };
info.SetFormat(Gst.Audio.AudioFormat.S16, SAMPLE_RATE, 1, position);
var audioCaps = info.ToCaps();
_data.AppSource["caps"] = audioCaps;
_data.AppSource["format"] = Format.Time;
_data.AppSource.NeedData += HandleStartFeed;
_data.AppSource.EnoughData += HandleStopFeed;
// AppSource.Connect("need-data", HandleStartFeed);
// AppSource.Connect("enough-data", HandleStopFeed);
audioCaps.Dispose();
}
public static void Main(string[] args)
{
b = 1;
d = 1;
Gst.Audio.AudioInfo info = new Gst.Audio.AudioInfo();
// Initialize Gstreamer
Gst.Application.Init(ref args);
// Create the elements
AppSource = new Gst.App.AppSrc("app_src");
Tee = ElementFactory.Make("tee", "tee");
AudioQueue = ElementFactory.Make("queue", "audio_queue");
AudioConvert1 = ElementFactory.Make("audioconvert", "audio_convert1");
AudioResample = ElementFactory.Make("audioresample", "audio_resample");
AudioSink = ElementFactory.Make("autoaudiosink", "audio_sink");
VideoQueue = ElementFactory.Make("queue", "video_queue");
AudioConvert2 = ElementFactory.Make("audioconvert", "audio_convert2");
Visual = ElementFactory.Make("wavescope", "visual");
VideoConvert = ElementFactory.Make("videoconvert", "video_convert");
VideoSink = ElementFactory.Make("autovideosink", "video_sink");
AppQueue = ElementFactory.Make("queue", "app_queue");
AppSink = new Gst.App.AppSink("app_sink");
// Create the empty pipeline
var pipeline = new Pipeline("test-pipeline");
if (AppSource == null || Tee == null || AudioQueue == null || AudioConvert1 == null || AudioResample == null ||
AudioSink == null || VideoQueue == null || AudioConvert2 == null || Visual == null || VideoConvert == null ||
AppQueue == null || AppSink == null || pipeline == null)
{
Console.WriteLine("Not all elements could be created.");
return;
}
// Configure wavescope
Visual ["shader"] = 0;
Visual ["style"] = 0;
// Configure appsrc
info.SetFormat(Gst.Audio.AudioFormat.S16, SampleRate, 1, (Gst.Audio.AudioChannelPosition) 0);
var audioCaps = info.ToCaps();
AppSource ["caps"] = audioCaps;
AppSource ["format"] = Format.Time;
AppSource.NeedData += StartFeed;
AppSource.EnoughData += StopFeed;
// Configure appsink
AppSink ["emit-signals"] = true;
AppSink ["caps"] = audioCaps;
AppSink.NewSample += NewSample;
// Link all elements that can be automatically linked because they have "Always" pads
pipeline.Add(AppSource, Tee, AudioQueue, AudioConvert1, AudioResample,
AudioSink, VideoQueue, AudioConvert2, Visual, VideoConvert, VideoSink, AppQueue, AppSink);
if (!Element.Link(AppSource, Tee) ||
!Element.Link(AudioQueue, AudioConvert1, AudioResample, AudioSink) ||
!Element.Link(VideoQueue, AudioConvert2, Visual, VideoConvert, VideoSink) ||
!Element.Link(AppQueue, AppSink))
{
Console.WriteLine("Elements could not be linked.");
return;
}
// Manually link the Tee, which has "Request" pads
var teeSrcPadTemplate = Tee.GetPadTemplate("src_%u");
var teeAudioPad = Tee.RequestPad(teeSrcPadTemplate);
Console.WriteLine("Obtained request pad {0} for audio branch.", teeAudioPad.Name);
var queueAudioPad = AudioQueue.GetStaticPad("sink");
var teeVideoPad = Tee.RequestPad(teeSrcPadTemplate);
Console.WriteLine("Obtained request pad {0} for video branch.", teeVideoPad.Name);
var queueVideoPad = VideoQueue.GetStaticPad("sink");
var teeAppPad = Tee.RequestPad(teeSrcPadTemplate);
Console.WriteLine("Obtained request pad {0} for app branch.", teeAppPad.Name);
var queueAppPad = AppQueue.GetStaticPad("sink");
if (teeAudioPad.Link(queueAudioPad) != PadLinkReturn.Ok ||
teeVideoPad.Link(queueVideoPad) != PadLinkReturn.Ok ||
teeAppPad.Link(queueAppPad) != PadLinkReturn.Ok)
{
Console.WriteLine("Tee could not be linked");
return;
}
// Instruct the bus to emit signals for each received message, and connect to the interesting signals
var bus = pipeline.Bus;
bus.AddSignalWatch();
bus.Connect("message::error", HandleError);
// Start playing the pipeline
pipeline.SetState(State.Playing);
// Create a GLib Main Loop and set it to run
MainLoop = new GLib.MainLoop();
MainLoop.Run();
// Release the request pads from the Tee, and unref them
Tee.ReleaseRequestPad(teeAudioPad);
Tee.ReleaseRequestPad(teeVideoPad);
Tee.ReleaseRequestPad(teeAppPad);
// Free resources
pipeline.SetState(State.Null);
Gst.Global.Deinit();
}
public static void Run(string[] args)
{
var info = new Gst.Audio.AudioInfo();
Data.b = 1;
Data.d = 1;
Gst.Application.Init(ref args);
Data.AppSource = new Gst.App.AppSrc("audio_source");
Data.Tee = ElementFactory.Make("tee", "tee");
Data.AudioQueue = ElementFactory.Make("queue", "audio_queue");
Data.AudioConvert1 = ElementFactory.Make("audioconvert", "audio_convert1");
Data.AudioResample = ElementFactory.Make("audioresample", "audio_resample");
Data.AudioSink = ElementFactory.Make("autoaudiosink", "audio_sink");
Data.VideoQueue = ElementFactory.Make("queue", "video_queue");
Data.AudioConvert2 = ElementFactory.Make("audioconvert", "audio_convert2");
Data.Visual = ElementFactory.Make("wavescope", "visual");
Data.VideoConvert = ElementFactory.Make("videoconvert", "csp");
Data.VideoSink = ElementFactory.Make("autovideosink", "video_sink");
Data.AppQueue = ElementFactory.Make("queue", "app_queue");
Data.AppSink = new Gst.App.AppSink("app_sink");
Data.Pipeline = new Pipeline("test-pipeline");
if (new[] { Data.Pipeline, Data.AppSource, Data.Tee, Data.AudioQueue,
Data.AudioConvert1, Data.AudioResample, Data.AudioSink, Data.VideoQueue,
Data.AudioConvert2, Data.Visual, Data.VideoConvert, Data.VideoSink, Data.AppQueue, Data.AppSink }.Any(el => el == null))
{
"Not all elements could be created".PrintErr();
return;
}
// Configure wavescope
Data.Visual["shader"] = 0;
Data.Visual["style"] = 0;
// Configure appsrc
info.SetFormat(Gst.Audio.AudioFormat.S16, SAMPLE_RATE, 1);
var audioCaps = info.ToCaps();
Data.AppSource["caps"] = audioCaps;
Data.AppSource["format"] = Format.Time;
Data.AppSource.Connect("need-data", StartFeed);
// Data.AppSource.NeedData += StartFeed;
Data.AppSource.EnoughData += StopFeed;
// Configure appsink
Data.AppSink.EmitSignals = true;
Data.AppSink.Caps = audioCaps;
Data.AppSink.NewSample += NewSample;
// Link all elements that can be automatically linked because they have "Always" pads
Data.Pipeline.Add(Data.AppSource, Data.Tee, Data.AudioQueue, Data.AudioConvert1, Data.AudioResample,
Data.AudioSink, Data.VideoQueue, Data.AudioConvert2, Data.Visual, Data.VideoConvert, Data.VideoSink, Data.AppQueue, Data.AppSink);
if (!Element.Link(Data.AppSource, Data.Tee) ||
!Element.Link(Data.AudioQueue, Data.AudioConvert1, Data.AudioResample, Data.AudioSink) ||
!Element.Link(Data.VideoQueue, Data.AudioConvert2, Data.Visual, Data.VideoConvert, Data.VideoSink) ||
!Element.Link(Data.AppQueue, Data.AppSink))
{
"Elements could not be linked.".PrintErr();
return;
}
// Manually link the Tee, which has "Request" pads
var teeAudioPad = Data.Tee.GetRequestPad("src_%u");
Console.WriteLine($"Obtained request pad {teeAudioPad.Name} for audio branch.");
var queueAudioPad = Data.AudioQueue.GetStaticPad("sink");
var teeVideoPad = Data.Tee.GetRequestPad("src_%u");
Console.WriteLine($"Obtained request pad {teeVideoPad.Name} for video branch.");
var queueVideoPad = Data.VideoQueue.GetStaticPad("sink");
var teeAppPad = Data.Tee.GetRequestPad("src_%u");
Console.WriteLine($"Obtained request pad {teeAppPad.Name} for app branch.");
var queueAppPad = Data.AppQueue.GetStaticPad("sink");
if ((teeAudioPad.Link(queueAudioPad) != PadLinkReturn.Ok) ||
(teeVideoPad.Link(queueVideoPad) != PadLinkReturn.Ok) ||
(teeAppPad.Link(queueAppPad) != PadLinkReturn.Ok))
{
"tee could not be linked".PrintErr();
return;
}
// Instruct the bus to emit signals for each received message, and connect to the interesting signals
var bus = Data.Pipeline.Bus;
bus.AddSignalWatch();
bus.Connect("message::error", HandleError);
// Start playing the pipeline
Data.Pipeline.SetState(State.Playing);
Data.MainLoop = new GLib.MainLoop();
Data.MainLoop.Run();
// Release the request pads from the Tee, and unref them
Data.Tee.ReleaseRequestPad(teeAudioPad);
Data.Tee.ReleaseRequestPad(teeVideoPad);
Data.Tee.ReleaseRequestPad(teeAppPad);
// Free resources
Data.Pipeline.SetState(State.Null);
Gst.Global.Deinit();
}