1 files changed, 113 insertions, 0 deletions
diff --git a/gr-fec/lib/encoder_impl.cc b/gr-fec/lib/encoder_impl.cc
new file mode 100644
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+++ b/gr-fec/lib/encoder_impl.cc
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+/* -*- c++ -*- */
+/*
+ * Copyright 2013-2014 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 "encoder_impl.h"
+#include <gnuradio/io_signature.h>
+#include <stdio.h>
+
+namespace gr {
+  namespace fec {
+
+    encoder::sptr
+    encoder::make(generic_encoder::sptr my_encoder,
+                  size_t input_item_size,
+                  size_t output_item_size)
+    {
+      return gnuradio::get_initial_sptr
+        (new encoder_impl(my_encoder, input_item_size,
+                          output_item_size));
+    }
+
+    encoder_impl::encoder_impl(generic_encoder::sptr my_encoder,
+                               size_t input_item_size,
+                               size_t output_item_size)
+      : block("fec_encoder",
+              io_signature::make(1, 1, input_item_size),
+              io_signature::make(1, 1, output_item_size)),
+        d_input_item_size(input_item_size),
+        d_output_item_size(output_item_size)
+    {
+      set_fixed_rate(true);
+      set_relative_rate((double)my_encoder->get_output_size()/(double)my_encoder->get_input_size());
+      set_output_multiple(my_encoder->get_output_size());
+      d_encoder = my_encoder;
+
+      d_input_size = d_encoder->get_input_size()*d_input_item_size;
+      d_output_size = d_encoder->get_output_size()*d_output_item_size;
+    }
+
+    encoder_impl::~encoder_impl()
+    {
+    }
+
+    int
+    encoder_impl::fixed_rate_ninput_to_noutput(int ninput)
+    {
+      return (int)(0.5 + ninput*relative_rate());
+    }
+
+    int
+    encoder_impl::fixed_rate_noutput_to_ninput(int noutput)
+    {
+      return (int)(0.5 + noutput/relative_rate());
+    }
+
+    void
+    encoder_impl::forecast(int noutput_items,
+                           gr_vector_int& ninput_items_required)
+    {
+      ninput_items_required[0] = fixed_rate_noutput_to_ninput(noutput_items);
+    }
+
+    int
+    encoder_impl::general_work(int noutput_items,
+                               gr_vector_int& ninput_items,
+                               gr_vector_const_void_star &input_items,
+                               gr_vector_void_star &output_items)
+    {
+      char *inbuffer  = (char*)input_items[0];
+      char *outbuffer = (char*)output_items[0];
+
+      GR_LOG_DEBUG(d_debug_logger, boost::format("%1%, %2%, %3%")      \
+                   % noutput_items % ninput_items[0] % (noutput_items/output_multiple()));
+
+
+      for(int i = 0; i < noutput_items/output_multiple(); i++) {
+        d_encoder->generic_work((void*)(inbuffer+(i*d_input_size)),
+                                (void*)(outbuffer+(i*d_output_size)));
+      }
+
+      GR_LOG_DEBUG(d_debug_logger, boost::format("consuming: %1%") \
+                   % (fixed_rate_noutput_to_ninput(noutput_items)));
+      GR_LOG_DEBUG(d_debug_logger, boost::format("returning: %1%") \
+                   % (noutput_items));
+
+      consume_each(fixed_rate_noutput_to_ninput(noutput_items));
+      return noutput_items;
+    }
+
+  } /* namespace fec */
+} /* namespace gr */