1 files changed, 60 insertions, 0 deletions
diff --git a/gr-atsc/include/atsc/randomizer.h b/gr-atsc/include/atsc/randomizer.h
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+++ b/gr-atsc/include/atsc/randomizer.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2006 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_ATSC_RANDOMIZER_H
+#define INCLUDED_ATSC_RANDOMIZER_H
+
+#include <atsc/api.h>
+#include <gr_sync_block.h>
+#include <atsc/randomizer_impl.h>
+
+class atsc_randomizer;
+typedef boost::shared_ptr<atsc_randomizer> atsc_randomizer_sptr;
+
+ATSC_API atsc_randomizer_sptr atsc_make_randomizer();
+
+/*!
+ * \brief "Whiten" incoming mpeg transport stream packets
+ * \ingroup atsc
+ *
+ * input: atsc_mpeg_packet; output: atsc_mpeg_packet_no_sync
+ */
+class ATSC_API atsc_randomizer : public gr_sync_block
+{
+  friend ATSC_API atsc_randomizer_sptr atsc_make_randomizer();
+
+  atsci_randomizer	d_rand;
+  bool			d_field2;	// user to init plinfo in output
+  int			d_segno;	// likewise
+
+  atsc_randomizer();
+
+public:
+  int work (int noutput_items,
+	    gr_vector_const_void_star &input_items,
+	    gr_vector_void_star &output_items);
+
+  void reset();
+};
+
+
+#endif /* INCLUDED_ATSC_RANDOMIZER_H */