Added txtime_setter block (a c++ version of txtime_bursts_tagger Python block)
diff --git a/lib/transmitter/txtime_setter_impl.cc b/lib/transmitter/txtime_setter_impl.cc
new file mode 100644
index 0000000..9ff1d8a
--- /dev/null
+++ b/lib/transmitter/txtime_setter_impl.cc
@@ -0,0 +1,139 @@
+/* -*- c++ -*- */
+/* @file
+ * @author Piotr Krysik <ptrkrysik@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 <grgsm/gsmtap.h>
+#include "txtime_setter_impl.h"
+
+namespace gr {
+ namespace gsm {
+
+ txtime_setter::sptr
+ txtime_setter::make(uint32_t init_fn, uint64_t init_time_secs, double init_time_fracs, uint64_t time_hint_secs, double time_hint_fracs, double timing_advance, double delay_correction)
+ {
+ return gnuradio::get_initial_sptr
+ (new txtime_setter_impl(init_fn, init_time_secs, init_time_fracs, time_hint_secs, time_hint_fracs, timing_advance, delay_correction));
+ }
+
+ /*
+ * The private constructor
+ */
+ txtime_setter_impl::txtime_setter_impl(uint32_t init_fn, uint64_t init_time_secs, double init_time_fracs, uint64_t time_hint_secs, double time_hint_fracs, double timing_advance, double delay_correction)
+ : gr::block("txtime_setter",
+ gr::io_signature::make(0, 0, 0),
+ gr::io_signature::make(0, 0, 0)),
+ d_fn_ref(init_fn),
+ d_ts_ref(0),
+ d_time_ref(init_time_secs,init_time_fracs),
+ d_time_hint(time_hint_secs,time_hint_fracs),
+ d_timing_advance(timing_advance),
+ d_delay_correction(delay_correction)
+ {
+ message_port_register_in(pmt::intern("fn_time"));
+ message_port_register_in(pmt::intern("bursts_in"));
+ message_port_register_out(pmt::intern("bursts_out"));
+
+ set_msg_handler(pmt::intern("fn_time"), boost::bind(&txtime_setter_impl::process_fn_time_reference, this, _1));
+ set_msg_handler(pmt::intern("bursts_in"), boost::bind(&txtime_setter_impl::process_txtime_of_burst, this, _1));
+ }
+
+ /*
+ * Our virtual destructor.
+ */
+ txtime_setter_impl::~txtime_setter_impl()
+ {
+ }
+
+ void txtime_setter_impl::process_fn_time_reference(pmt::pmt_t msg)
+ {
+// d_time_hint = pmt::to_python(pmt::dict_ref(msg, pmt::intern("time_hint"), pmt::PMT_NIL))
+ pmt::pmt_t not_found = pmt::intern("not_found");
+ pmt::pmt_t fn_time = pmt::dict_ref(msg, pmt::intern("fn_time"), not_found);
+ pmt::pmt_t time_hint = pmt::dict_ref(msg, pmt::intern("fn_time"), not_found);
+
+ if(fn_time != not_found)
+ {
+ uint32_t fn_ref = static_cast<uint32_t>(pmt::to_uint64(pmt::car(pmt::car(fn_time))));
+ uint32_t ts = static_cast<uint32_t>(pmt::to_uint64(pmt::cdr(pmt::car(fn_time))));
+ uint64_t time_secs = pmt::to_uint64(pmt::car(pmt::cdr(fn_time)));
+ double time_fracs = pmt::to_double(pmt::cdr(pmt::cdr(fn_time)));
+ set_fn_time_reference(fn_ref, ts, time_secs, time_fracs);
+ } else if(time_hint != not_found) {
+ set_time_hint(pmt::to_uint64(pmt::car(fn_time)), pmt::to_double(pmt::cdr(fn_time)));
+ }
+
+ }
+
+ void txtime_setter_impl::process_txtime_of_burst(pmt::pmt_t burst)
+ {
+ pmt::pmt_t header_plus_burst = pmt::cdr(burst);
+ int8_t * burst_int8 = (int8_t *)pmt::blob_data(header_plus_burst);
+ gsmtap_hdr * header = (gsmtap_hdr *)(burst_int8);
+
+ uint32_t frame_nr = be32toh(header->frame_number);
+ uint32_t ts_num = header->timeslot;
+
+ if(d_fn_ref != 0xffffffff)
+ {
+ time_format txtime = fn_time_delta_cpp(d_fn_ref, d_time_ref, frame_nr, d_time_hint, ts_num, d_ts_ref);
+ time_spec_t txtime_spec = time_spec_t(txtime.first, txtime.second);
+ txtime_spec = txtime_spec - d_delay_correction;
+ txtime_spec = txtime_spec - d_timing_advance;
+
+ pmt::pmt_t tags_dict = pmt::dict_add(pmt::make_dict(), pmt::intern("tx_time"), pmt::make_tuple(pmt::from_uint64(txtime_spec.get_full_secs()),pmt::from_double(txtime_spec.get_frac_secs())));
+ tags_dict = pmt::dict_add(tags_dict, pmt::intern("fn"), pmt::from_uint64(frame_nr));
+ tags_dict = pmt::dict_add(tags_dict, pmt::intern("ts"), pmt::from_uint64(ts_num));
+ pmt::pmt_t new_msg = pmt::cons(tags_dict, pmt::cdr(burst));
+ message_port_pub(pmt::intern("bursts_out"), new_msg);
+ }
+ }
+
+ void txtime_setter_impl::set_fn_time_reference(uint32_t fn, uint32_t ts, uint64_t time_secs, double time_fracs)
+ {
+ d_fn_ref = fn;
+ d_ts_ref = ts;
+ d_time_ref = std::make_pair(time_secs, time_fracs);
+ set_time_hint(time_secs, time_fracs);
+ }
+
+ void txtime_setter_impl::set_time_hint(uint64_t time_hint_secs, double time_hint_fracs)
+ {
+ d_time_hint = std::make_pair(time_hint_secs, time_hint_fracs);
+ }
+
+ void txtime_setter_impl::set_delay_correction(double delay_correction)
+ {
+ d_delay_correction = delay_correction;
+ }
+
+ void txtime_setter_impl::set_timing_advance(double timing_advance)
+ {
+ d_timing_advance = timing_advance;
+ }
+
+ } /* namespace gsm */
+} /* namespace gr */
+