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// Authors
// Copyright (C) 2014 Stephan Sundermann <stephansundermann@gmail.com>
using System;
using Gst;
using System.Runtime.InteropServices;
using System.Text;
namespace GstreamerSharp
{
class Playback
{
public static void Main (string[] args)
{
// Initialize GStreamer
Application.Init (ref args);
// Build the pipeline
var pipeline = Parse.Launch ("playbin uri=http://docs.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm");
// Create the elements inside the sink bin
var equalizer = ElementFactory.Make ("equalizer-3bands", "equalizer");
var convert = ElementFactory.Make ("audioconvert", "convert");
var sink = ElementFactory.Make ("autoaudiosink", "audio_sink");
if (equalizer == null || convert == null || sink == null) {
Console.WriteLine ("Not all elements could be created.");
return;
}
// Create the sink bin, add the elements and link them
var bin = new Bin ("audio_sink_bin");
bin.Add (equalizer, convert, sink);
Element.Link (equalizer, convert, sink);
var pad = equalizer.GetStaticPad ("sink");
var ghostPad = new GhostPad ("sink", pad);
ghostPad.SetActive (true);
bin.AddPad (ghostPad);
// Start playing
var ret = pipeline.SetState (State.Playing);
if (ret == StateChangeReturn.Failure) {
Console.WriteLine ("Unable to set the pipeline to the playing state.");
return;
}
// Configure the equalizer
equalizer ["band1"] = (double)-24.0;
equalizer ["band2"] = (double)-24.0;
// Set playbin's audio sink to be our sink bin
pipeline ["audio-sink"] = bin;
// Wait until error or EOS
var bus = pipeline.Bus;
var msg = bus.TimedPopFiltered (Constants.CLOCK_TIME_NONE, MessageType.Error | MessageType.Eos);
// Free resources
pipeline.SetState (State.Null);
}
}
}
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