Merge branch 'dfsg-orig'

[debian/gnuradio] / gr-atsc / src / lib / atsci_data_interleaver.cc

diff --git a/gr-atsc/src/lib/atsci_data_interleaver.cc b/gr-atsc/src/lib/atsci_data_interleaver.cc
new file mode 100644 (file)
index 0000000..b20dde9
--- /dev/null
+++ b/gr-atsc/src/lib/atsci_data_interleaver.cc
@@ -0,0 +1,61 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2002 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.
+ */
+
+#include <atsci_data_interleaver.h>
+
+void 
+atsci_data_interleaver::interleave (atsc_mpeg_packet_rs_encoded &out,
+                                  const atsc_mpeg_packet_rs_encoded &in)
+{
+  assert (in.pli.regular_seg_p ());
+  plinfo::sanity_check (in.pli);
+
+  out.pli = in.pli;                    // copy pipeline info
+  if (in.pli.first_regular_seg_p ())   // reset commutator if required
+    sync ();
+
+  transform (out.data, in.data, sizeof (in.data));
+}
+
+
+void 
+atsci_data_deinterleaver::deinterleave (atsc_mpeg_packet_rs_encoded &out,
+                                      const atsc_mpeg_packet_rs_encoded &in)
+{
+  assert (in.pli.regular_seg_p ());
+  plinfo::sanity_check (in.pli);
+
+  // reset commutator if required using INPUT pipeline info
+  if (in.pli.first_regular_seg_p ())
+    sync ();
+  
+  // remap OUTPUT pipeline info to reflect 52 data segment end-to-end delay
+
+  plinfo::delay (out.pli, in.pli, 52);
+
+  // now do the actual deinterleaving
+
+  for (unsigned int i = 0; i < sizeof (in.data); i++){
+    out.data[i] = alignment_fifo.stuff (transform (in.data[i]));
+  }
+}
+