1 files changed, 96 insertions, 0 deletions
diff --git a/gr-dtv/lib/atsc_deinterleaver_impl.cc b/gr-dtv/lib/atsc_deinterleaver_impl.cc
new file mode 100644
index 0000000000..0d6d13106d
--- /dev/null
+++ b/gr-dtv/lib/atsc_deinterleaver_impl.cc
@@ -0,0 +1,96 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2014 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "atsc_deinterleaver_impl.h"
+#include "gnuradio/dtv/atsc_consts.h"
+#include <gnuradio/io_signature.h>
+
+namespace gr {
+  namespace dtv {
+
+    atsc_deinterleaver::sptr
+    atsc_deinterleaver::make()
+    {
+      return gnuradio::get_initial_sptr
+	(new atsc_deinterleaver_impl());
+    }
+
+    atsc_deinterleaver_impl::atsc_deinterleaver_impl()
+        : gr::sync_block("atsc_deinterleaver",
+                    io_signature::make(1, 1, sizeof(atsc_mpeg_packet_rs_encoded)),
+                    io_signature::make(1, 1, sizeof(atsc_mpeg_packet_rs_encoded))), alignment_fifo (156)
+    {
+      m_fifo.resize (52);
+
+      for (int i = 0; i < 52; i++)
+        m_fifo[52 - 1 - i] = new interleaver_fifo<unsigned char>(i * 4);
+
+      sync ();
+    }
+
+    atsc_deinterleaver_impl::~atsc_deinterleaver_impl()
+    {
+      for (int i = 0; i < 52; i++)
+        delete m_fifo[i];
+    }
+
+    void atsc_deinterleaver_impl::reset ()
+    {
+      sync ();
+      for (int i = 0; i < 52; i++)
+        m_fifo[i]->reset ();
+    }
+
+    int
+    atsc_deinterleaver_impl::work (int noutput_items,
+                        gr_vector_const_void_star &input_items,
+                        gr_vector_void_star &output_items)
+    {
+      const atsc_mpeg_packet_rs_encoded *in = (const atsc_mpeg_packet_rs_encoded *) input_items[0];
+      atsc_mpeg_packet_rs_encoded *out = (atsc_mpeg_packet_rs_encoded *) output_items[0];
+
+      for (int i = 0; i < noutput_items; i++){
+        assert (in[i].pli.regular_seg_p ());
+        plinfo::sanity_check (in[i].pli);
+
+        // reset commutator if required using INPUT pipeline info
+        if (in[i].pli.first_regular_seg_p ())
+          sync ();
+
+        // remap OUTPUT pipeline info to reflect 52 data segment end-to-end delay
+        plinfo::delay (out[i].pli, in[i].pli, 52);
+
+        // now do the actual deinterleaving
+        for (unsigned int j = 0; j < sizeof (in[i].data); j++){
+          out[i].data[j] = alignment_fifo.stuff (transform (in[i].data[j]));
+        }
+      }
+
+      return noutput_items;
+    }
+
+  } /* namespace dtv */
+} /* namespace gr */