Added new block: Pad Tagged Stream

lib/CMakeLists.txt

@@ -39,6 +39,7 @@ list(APPEND foo_sources
     random_periodic_msg_source_impl.cc
     rtt_measure_impl.cc
     wireshark_connector_impl.cc
+    pad_tagged_stream_impl.cc
 )
 
 set(foo_sources "${foo_sources}" PARENT_SCOPE)

lib/pad_tagged_stream_impl.cc

@@ -0,0 +1,86 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2019 "Cyancali".
+ *
+ * This 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.
+ *
+ * This software 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 this software; 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 <gnuradio/io_signature.h>
+#include "pad_tagged_stream_impl.h"
+
+namespace gr {
+  namespace foo {
+
+    pad_tagged_stream::sptr
+    pad_tagged_stream::make(int buffer_size, const std::string len_tag_name)
+    {
+      return gnuradio::get_initial_sptr
+        (new pad_tagged_stream_impl(buffer_size, len_tag_name));
+    }
+
+
+    /*
+     * The private constructor
+     */
+    pad_tagged_stream_impl::pad_tagged_stream_impl(int buffer_size, const std::string len_tag_name)
+      : gr::tagged_stream_block("pad_tagged_stream",
+                                gr::io_signature::make(1, 1, sizeof(gr_complex)),
+                                gr::io_signature::make(1, 1, sizeof(gr_complex)),
+                                len_tag_name),
+        d_buf_len(buffer_size),
+        d_len_tag(len_tag_name)
+    {
+        set_tag_propagation_policy(TPP_DONT);
+    }
+
+    /*
+     * Our virtual destructor.
+     */
+    pad_tagged_stream_impl::~pad_tagged_stream_impl()
+    {
+    }
+
+    int
+    pad_tagged_stream_impl::calculate_output_stream_length(const gr_vector_int &ninput_items)
+    {
+      return d_buf_len;
+    }
+
+    int
+    pad_tagged_stream_impl::work (int noutput_items,
+                       gr_vector_int &ninput_items,
+                       gr_vector_const_void_star &input_items,
+                       gr_vector_void_star &output_items)
+    {
+      const gr_complex *in = (const gr_complex *) input_items[0];
+      gr_complex *out = (gr_complex *) output_items[0];
+
+      noutput_items = d_buf_len;
+
+      memcpy((void*)out, (const void*)in, ninput_items[0]);
+      if (ninput_items[0] < noutput_items) memset((void*) (out+ninput_items[0]), 0, noutput_items-ninput_items[0]);
+
+      return noutput_items;
+
+    }
+
+  } /* namespace foo */
+} /* namespace gr */
+

lib/pad_tagged_stream_impl.h

@@ -0,0 +1,52 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2019 "Cyancali".
+ *
+ * This 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.
+ *
+ * This software 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 this software; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_FOO_PAD_TAGGED_STREAM_IMPL_H
+#define INCLUDED_FOO_PAD_TAGGED_STREAM_IMPL_H
+
+#include <foo/pad_tagged_stream.h>
+
+namespace gr {
+  namespace foo {
+
+    class pad_tagged_stream_impl : public pad_tagged_stream
+    {
+     private:
+      int d_buf_len;
+      std::string d_len_tag;
+
+     public:
+      pad_tagged_stream_impl(int buffer_size, const std::string len_tag_name);
+      ~pad_tagged_stream_impl();
+
+      int calculate_output_stream_length(const gr_vector_int &ninput_items);
+
+      // Where all the action really happens
+      int work(int noutput_items,
+           gr_vector_int &ninput_items,
+           gr_vector_const_void_star &input_items,
+           gr_vector_void_star &output_items);
+    };
+
+  } // namespace foo
+} // namespace gr
+
+#endif /* INCLUDED_FOO_PAD_TAGGED_STREAM_IMPL_H */
+