Implementation of TCH/F demapper block. See issue #38
diff --git a/lib/demapping/tch_f_chans_demapper_impl.h b/lib/demapping/tch_f_chans_demapper_impl.h
new file mode 100644
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+++ b/lib/demapping/tch_f_chans_demapper_impl.h
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+/* -*- 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.
+ */
+
+#ifndef INCLUDED_GSM_UNIVERSAL_TCH_CHANS_DEMAPPER_IMPL_H
+#define INCLUDED_GSM_UNIVERSAL_TCH_CHANS_DEMAPPER_IMPL_H
+
+#include <grgsm/demapping/tch_f_chans_demapper.h>
+
+namespace gr {
+ namespace gsm {
+
+ class tch_f_chans_demapper_impl : public tch_f_chans_demapper
+ {
+ private:
+ unsigned int d_starts_fn_mod26[26];
+ unsigned int d_timeslot;
+ uint32_t d_frame_numbers[4];
+ uint32_t d_frame_numbers_sacch[4];
+ pmt::pmt_t d_bursts[4];
+ bool d_bursts_stolen;
+ pmt::pmt_t d_bursts_sacch[4];
+ public:
+ tch_f_chans_demapper_impl(unsigned int timeslot_nr);
+ ~tch_f_chans_demapper_impl();
+
+ void filter_tch_chans(pmt::pmt_t msg);
+ };
+
+ } // namespace gsm
+} // namespace gr
+
+#endif /* INCLUDED_GSM_UNIVERSAL_TCH_CHANS_DEMAPPER_IMPL_H */
+