Implemented burst timeslot splitter for flow control. Issue #100

3 files changed, 158 insertions, 0 deletions

diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 61f0858..4a61f0b 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -46,6 +46,7 @@ list(APPEND grgsm_sources
     decoding/GSM660Tables.cpp
     decoding/GSM503Tables.cpp
     decoding/ViterbiR204.cpp
+    flow_control/burst_timeslot_splitter_impl.cc
     misc_utils/controlled_rotator_cc_impl.cc
     misc_utils/controlled_const_source_f_impl.cc
     misc_utils/message_printer_impl.cc
diff --git a/lib/flow_control/burst_timeslot_splitter_impl.cc b/lib/flow_control/burst_timeslot_splitter_impl.cc
new file mode 100644
index 0000000..99964b7
--- /dev/null
+++ b/lib/flow_control/burst_timeslot_splitter_impl.cc
@@ -0,0 +1,114 @@
+/* -*- c++ -*- */
+/* @file
+ * @author Roman Khassraf <rkhassraf@gmail.com>
+ * @section LICENSE
+ *
+ * Gr-gsm 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.
+ *
+ * Gr-gsm 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 gr-gsm; 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 "burst_timeslot_splitter_impl.h"
+#include <stdio.h>
+#include <grgsm/endian.h>
+#include <grgsm/gsmtap.h>
+
+
+namespace gr {
+  namespace gsm {
+
+    burst_timeslot_splitter::sptr
+    burst_timeslot_splitter::make()
+    {
+      return gnuradio::get_initial_sptr
+        (new burst_timeslot_splitter_impl());
+    }
+
+    /*
+     * The private constructor
+     */
+    burst_timeslot_splitter_impl::burst_timeslot_splitter_impl()
+      : gr::block("burst_timeslot_splitter",
+              gr::io_signature::make(0, 0, 0),
+              gr::io_signature::make(0, 0, 0))
+    {
+        message_port_register_in(pmt::mp("in"));
+        
+        message_port_register_out(pmt::mp("out0"));
+        message_port_register_out(pmt::mp("out1"));
+        message_port_register_out(pmt::mp("out2"));
+        message_port_register_out(pmt::mp("out3"));
+        message_port_register_out(pmt::mp("out4"));
+        message_port_register_out(pmt::mp("out5"));
+        message_port_register_out(pmt::mp("out6"));
+        message_port_register_out(pmt::mp("out7"));
+        
+        set_msg_handler(pmt::mp("in"), boost::bind(&burst_timeslot_splitter_impl::process_burst, this, _1));
+    }
+
+    /*
+     * Our virtual destructor.
+     */
+    burst_timeslot_splitter_impl::~burst_timeslot_splitter_impl() {}
+
+    void burst_timeslot_splitter_impl::process_burst(pmt::pmt_t msg)
+    {
+        pmt::pmt_t header_plus_burst = pmt::cdr(msg);
+        gsmtap_hdr * header = (gsmtap_hdr *)pmt::blob_data(header_plus_burst);
+        
+        unsigned int timeslot = header->timeslot;
+        
+        std::string port("out");
+
+        switch (timeslot)
+        {
+            case 0:
+                port.append("0");
+                break;
+            case 1:
+                port.append("1");
+                break;
+            case 2:
+                port.append("2");
+                break;
+            case 3:
+                port.append("3");
+                break;
+            case 4:
+                port.append("4");
+                break;
+            case 5:
+                port.append("5");
+                break;
+            case 6:
+                port.append("6");
+                break;
+            case 7:
+                port.append("7");
+                break;
+            default:
+                port.append("0");
+                break;
+        }
+        
+        message_port_pub(pmt::mp(port), msg);
+    }
+  } /* namespace gsm */
+} /* namespace gr */
diff --git a/lib/flow_control/burst_timeslot_splitter_impl.h b/lib/flow_control/burst_timeslot_splitter_impl.h
new file mode 100644
index 0000000..47a9115
--- /dev/null
+++ b/lib/flow_control/burst_timeslot_splitter_impl.h
@@ -0,0 +1,43 @@
+/* -*- c++ -*- */
+/* @file
+ * @author Roman Khassraf <rkhassraf@gmail.com>
+ * @section LICENSE
+ *
+ * Gr-gsm 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.
+ *
+ * Gr-gsm 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 gr-gsm; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef INCLUDED_GSM_BURST_TIMESLOT_SPLITTER_IMPL_H
+#define INCLUDED_GSM_BURST_TIMESLOT_SPLITTER_IMPL_H
+
+#include <grgsm/flow_control/burst_timeslot_splitter.h>
+
+namespace gr {
+  namespace gsm {
+
+    class burst_timeslot_splitter_impl : public burst_timeslot_splitter
+    {
+     public:
+      burst_timeslot_splitter_impl();
+      ~burst_timeslot_splitter_impl();
+      void process_burst(pmt::pmt_t msg);
+    };
+
+  } // namespace gsm
+} // namespace gr
+
+#endif /* INCLUDED_GSM_BURST_TIMESLOT_SPLITTER_IMPL_H */
+