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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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76 lines
1.6 KiB
Text
76 lines
1.6 KiB
Text
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[DllImport ("libgstreamer-0.10.dll") ]
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static extern int gst_iterator_next (IntPtr iterator, out IntPtr elem);
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[DllImport ("libgstreamer-0.10.dll") ]
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static extern void gst_iterator_resync (IntPtr iterator);
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private class Enumerator : IEnumerator {
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Iterator iterator;
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Hashtable seen = new Hashtable ();
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private object current = null;
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public object Current {
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get {
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return current;
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}
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}
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public bool MoveNext () {
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IntPtr raw_ret;
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bool retry = false;
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if (iterator.Handle == IntPtr.Zero)
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return false;
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do {
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int ret = gst_iterator_next (iterator.Handle, out raw_ret);
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switch (ret) {
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case 0:
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return false;
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case 1:
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if (seen.Contains (raw_ret)) {
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retry = true;
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break;
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}
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seen.Add (raw_ret, null);
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current = GLib.Object.GetObject (raw_ret, true);
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return true;
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case 2:
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gst_iterator_resync (iterator.Handle);
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retry = true;
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break;
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default:
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case 3:
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throw new Exception ("Error while iterating pads");
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}
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} while (retry);
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return false;
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}
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public void Reset () {
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seen.Clear ();
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if (iterator.Handle != IntPtr.Zero)
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gst_iterator_resync (iterator.Handle);
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}
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public Enumerator (Iterator iterator) {
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this.iterator = iterator;
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}
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}
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private Enumerator enumerator = null;
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public IEnumerator GetEnumerator () {
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if (this.enumerator == null)
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this.enumerator = new Enumerator (this);
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return this.enumerator;
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}
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[DllImport ("libgstreamer-0.10.dll") ]
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static extern void gst_iterator_free (IntPtr iterator);
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~Iterator () {
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if (Raw != IntPtr.Zero)
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gst_iterator_free (Raw);
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}
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