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-rw-r--r--gr-digital/hier/digital_cpmmod_bc.cc69
1 files changed, 69 insertions, 0 deletions
diff --git a/gr-digital/hier/digital_cpmmod_bc.cc b/gr-digital/hier/digital_cpmmod_bc.cc
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+/* -*- c++ -*- */
+/*
+ * Copyright 2010 Free Software Foundation, Inc.
+ *
+ * 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 <digital_cpmmod_bc.h>
+#include <gr_io_signature.h>
+
+
+// Shared pointer constructor
+digital_cpmmod_bc_sptr
+digital_make_cpmmod_bc(int type, float h,
+ unsigned samples_per_sym,
+ unsigned L, double beta)
+{
+ return gnuradio::get_initial_sptr(new digital_cpmmod_bc((gr_cpm::cpm_type)type,
+ h, samples_per_sym,
+ L, beta));
+}
+
+
+digital_cpmmod_bc::digital_cpmmod_bc(gr_cpm::cpm_type type, float h,
+ unsigned samples_per_sym,
+ unsigned L, double beta)
+ : gr_hier_block2("digital_cpmmod_bc",
+ gr_make_io_signature(1, 1, sizeof(char)),
+ gr_make_io_signature2(1, 1, sizeof(gr_complex), sizeof(float))),
+ d_taps(gr_cpm::phase_response(type, samples_per_sym, L, beta)),
+ d_char_to_float(gr_make_char_to_float()),
+ d_pulse_shaper(gr_make_interp_fir_filter_fff(samples_per_sym, d_taps)),
+ d_fm(gr_make_frequency_modulator_fc(M_PI * h))
+{
+ switch (type) {
+ case gr_cpm::LRC:
+ case gr_cpm::LSRC:
+ case gr_cpm::LREC:
+ case gr_cpm::TFM:
+ case gr_cpm::GAUSSIAN:
+ break;
+
+ default:
+ throw std::invalid_argument("invalid CPM type");
+ }
+
+ connect(self(), 0, d_char_to_float, 0);
+ connect(d_char_to_float, 0, d_pulse_shaper, 0);
+ connect(d_pulse_shaper, 0, d_fm, 0);
+ connect(d_fm, 0, self(), 0);
+}
+