Merge branch 'dfsg-orig'

[debian/gnuradio] / gr-atsc / src / lib / atsc_derandomizer.h

diff --git a/gr-atsc/src/lib/atsc_derandomizer.h b/gr-atsc/src/lib/atsc_derandomizer.h
new file mode 100644 (file)
index 0000000..a72efbd
--- /dev/null
+++ b/gr-atsc/src/lib/atsc_derandomizer.h
@@ -0,0 +1,56 @@
+/* -*- 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_DERANDOMIZER_H
+#define INCLUDED_ATSC_DERANDOMIZER_H
+
+#include <gr_sync_block.h>
+#include <atsci_randomizer.h>
+
+class atsc_derandomizer;
+typedef boost::shared_ptr<atsc_derandomizer> atsc_derandomizer_sptr;
+
+atsc_derandomizer_sptr atsc_make_derandomizer();
+
+/*!
+ * \brief "dewhiten" incoming mpeg transport stream packets
+ * \ingroup atsc
+ *
+ * input: atsc_mpeg_packet_no_sync; output: atsc_mpeg_packet; 
+ */
+class atsc_derandomizer : public gr_sync_block
+{
+  friend atsc_derandomizer_sptr atsc_make_derandomizer();
+
+  atsci_randomizer     d_rand;
+
+  atsc_derandomizer();
+
+public:
+  int work (int noutput_items,
+           gr_vector_const_void_star &input_items,
+           gr_vector_void_star &output_items);
+
+  void reset();
+};
+
+
+#endif /* INCLUDED_ATSC_DERANDOMIZER_H */