From 3d38e82e7d87dfc01132b199e33b53add8a706fa Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Fri, 15 Mar 2013 20:49:05 -0400
Subject: atsc: adjustments to atsc to start to conform to v3.7 structure.
Not going to comply completely with the new structure; just wanted to get it so that it looked more consistent once installed.
---
gr-atsc/lib/GrAtscSegSymSyncImpl.cc | 103 ++++++++++++++++++++++++++++++++++++
1 file changed, 103 insertions(+)
create mode 100644 gr-atsc/lib/GrAtscSegSymSyncImpl.cc
(limited to 'gr-atsc/lib/GrAtscSegSymSyncImpl.cc')
diff --git a/gr-atsc/lib/GrAtscSegSymSyncImpl.cc b/gr-atsc/lib/GrAtscSegSymSyncImpl.cc
new file mode 100644
index 0000000000..425ab36d11
--- /dev/null
+++ b/gr-atsc/lib/GrAtscSegSymSyncImpl.cc
@@ -0,0 +1,103 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * 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.
+ */
+
+#include <atsc/GrAtscSegSymSyncImpl.h>
+#include <atsc/GrAtscSegSymSyncImpl_export.h>
+#include <cmath>
+#include <assert.h>
+
+GrAtscSegSymSyncImpl::GrAtscSegSymSyncImpl (
+ double nominal_ratio_of_rx_clock_to_symbol_freq)
+ : d_interp (nominal_ratio_of_rx_clock_to_symbol_freq)
+{
+ // set approximate decimation rate for superclass's benefit
+ decimation = (int) rint (nominal_ratio_of_rx_clock_to_symbol_freq);
+
+ history = 1500; // spare input samples in case we need them.
+
+ d_sssr.reset ();
+ d_interp.reset ();
+ d_next_input = 0;
+ d_rx_clock_to_symbol_freq = nominal_ratio_of_rx_clock_to_symbol_freq;
+}
+
+GrAtscSegSymSyncImpl::~GrAtscSegSymSyncImpl ()
+{
+ // Nop
+}
+
+void
+GrAtscSegSymSyncImpl::pre_initialize ()
+{
+ setSamplingFrequency (
+ getInputSamplingFrequencyN (0) / d_rx_clock_to_symbol_freq);
+}
+
+int
+GrAtscSegSymSyncImpl::forecast (VrSampleRange output,
+ VrSampleRange inputs[])
+{
+ assert (numberInputs == 1); // I hate these free references to
+ // superclass's instance variables...
+
+ inputs[0].index = d_next_input;
+ inputs[0].size =
+ ((long unsigned int) (output.size * d_rx_clock_to_symbol_freq)
+ + history - 1);
+
+ return 0;
+}
+
+int
+GrAtscSegSymSyncImpl::work (VrSampleRange output, void *ao[],
+ VrSampleRange inputs[], void *ai[])
+{
+#if 0
+ float *input_samples = ((float **) ai)[0];
+ float *output_samples = ((float **) ao)[0];
+ atsc::syminfo *output_info = ((atsc::syminfo **) ao)[1];
+
+ // FIXME finish...
+#endif
+ assert (0);
+
+ return output.size;
+}
+
+void
+GrAtscSegSymSyncImpl::reset ()
+{
+ d_sssr.reset ();
+ d_interp.reset ();
+}
+
+
+/*
+ * Exported constructor.
+ * Doesn't expose any of the internals or our compile time dependencies.
+ */
+
+GrAtscSegSymSync *
+create_GrAtscSegSymSyncImpl (double nominal_ratio_of_rx_clock_to_symbol_freq)
+{
+ return new GrAtscSegSymSyncImpl (nominal_ratio_of_rx_clock_to_symbol_freq);
+}
--
cgit v1.2.3