Gst.Buffer buffer = null;
public Gst.Buffer Buffer {
  get {
    return buffer;
  }
}

[DllImport ("libgstbase-0.10.dll", CallingConvention = CallingConvention.Cdecl) ]
static extern IntPtr gst_byte_writer_new_with_buffer (IntPtr buffer, bool initialized);

public ByteWriter (Gst.Buffer buffer, bool initialized) {
  Raw = gst_byte_writer_new_with_buffer (buffer == null ? IntPtr.Zero : buffer.Handle, initialized);
  this.buffer = buffer;
}

[DllImport ("libgstbase-0.10.dll", CallingConvention = CallingConvention.Cdecl) ]
static extern bool gst_byte_writer_put_data (IntPtr writer, IntPtr data, uint size);

public bool PutData (byte[] data) {
  IntPtr data_raw = Marshal.AllocHGlobal (data.Length);
  Marshal.Copy (data, 0, data_raw, data.Length);
  bool ret = gst_byte_writer_put_data (Handle, data_raw, (uint) data.Length);
  Marshal.FreeHGlobal (data_raw);
  return ret;
}

[DllImport ("libgstbase-0.10.dll", CallingConvention = CallingConvention.Cdecl) ]
static extern bool gst_byte_reader_peek_data (IntPtr raw, uint size, out IntPtr val);

public bool PeekData (uint size, out byte[] val) {
  IntPtr raw_ret;

  bool ret = gst_byte_reader_peek_data (Handle, size, out raw_ret);

  if (!ret || raw_ret == IntPtr.Zero) {
    val = null;
  } else {
    val = new byte[size];
    Marshal.Copy (raw_ret, val, 0, (int) size);
  }

  return ret;
}

[DllImport ("libgstbase-0.10.dll", CallingConvention = CallingConvention.Cdecl) ]
static extern bool gst_byte_reader_get_data (IntPtr raw, uint size, out IntPtr val);

public bool GetData (uint size, out byte[] val) {
  IntPtr raw_ret;

  bool ret = gst_byte_reader_get_data (Handle, size, out raw_ret);

  if (!ret || raw_ret == IntPtr.Zero) {
    val = null;
  } else {
    val = new byte[size];
    Marshal.Copy (raw_ret, val, 0, (int) size);
  }

  return ret;
}