Merge remote branch 'mbant/cpm' into digital

Conflicts:
	gnuradio-core/src/lib/general/Makefile.am
	gnuradio-core/src/lib/general/general.i
	gnuradio-core/src/lib/hier/Makefile.am
	grc/blocks/Makefile.am

8 files changed, 533 insertions, 1 deletions

diff --git a/gnuradio-core/src/lib/general/Makefile.am b/gnuradio-core/src/lib/general/Makefile.am
index f210cee39..fe545f98c 100644
--- a/gnuradio-core/src/lib/general/Makefile.am
+++ b/gnuradio-core/src/lib/general/Makefile.am
@@ -55,6 +55,7 @@ libgeneral_la_SOURCES = 		\
 	gr_copy.cc			\
 	gr_count_bits.cc		\
 	gr_cpfsk_bc.cc			\
+	gr_cpm.cc			\
 	gr_ctcss_squelch_ff.cc		\
 	gr_decode_ccsds_27_fb.cc	\
 	gr_deinterleave.cc		\
@@ -176,6 +177,7 @@ libgeneral_la_SOURCES = 		\
 libgeneral_qa_la_SOURCES = 		\
 	qa_general.cc			\
 	qa_gr_circular_file.cc		\
+	qa_gr_cpm.cc			\
 	qa_gr_firdes.cc			\
 	qa_gr_fxpt.cc			\
 	qa_gr_fxpt_nco.cc		\
@@ -203,6 +205,7 @@ grinclude_HEADERS = 			\
 	gr_copy.h			\
 	gr_count_bits.h			\
 	gr_cpfsk_bc.h			\
+	gr_cpm.h			\
 	gr_ctcss_squelch_ff.h		\
 	gr_decode_ccsds_27_fb.h		\
 	gr_diff_decoder_bb.h		\
@@ -340,6 +343,7 @@ grinclude_HEADERS = 			\
 noinst_HEADERS = 			\
 	qa_general.h			\
 	qa_gr_circular_file.h		\
+	qa_gr_cpm.h			\
 	qa_gr_firdes.h			\
 	qa_gr_fxpt.h			\
 	qa_gr_fxpt_nco.h		\
@@ -367,6 +371,7 @@ swiginclude_HEADERS =			\
 	gr_conjugate_cc.i		\
 	gr_copy.i			\
 	gr_cpfsk_bc.i			\
+	gr_cpm.i			\
 	gr_ctcss_squelch_ff.i		\
 	gr_decode_ccsds_27_fb.i		\
 	gr_diff_decoder_bb.i		\
diff --git a/gnuradio-core/src/lib/general/general.i b/gnuradio-core/src/lib/general/general.i
index f9adff3fa..e965eea64 100644
--- a/gnuradio-core/src/lib/general/general.i
+++ b/gnuradio-core/src/lib/general/general.i
@@ -1,6 +1,6 @@
 /* -*- c++ -*- */
 /*
- * Copyright 2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
+ * Copyright 2004,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
  * 
  * This file is part of GNU Radio
  * 
@@ -137,6 +137,7 @@
 #include <gr_annotator_alltoall.h>
 #include <gr_annotator_1to1.h>
 #include <gr_burst_tagger.h>
+#include <gr_cpm.h>
 %}
 
 %include "gri_control_loop.i"
@@ -254,3 +255,4 @@
 %include "gr_annotator_alltoall.i"
 %include "gr_annotator_1to1.i"
 %include "gr_burst_tagger.i"
+%include "gr_cpm.i"
diff --git a/gnuradio-core/src/lib/general/gr_cpm.cc b/gnuradio-core/src/lib/general/gr_cpm.cc
new file mode 100644
index 000000000..a00526b52
--- /dev/null
+++ b/gnuradio-core/src/lib/general/gr_cpm.cc
@@ -0,0 +1,214 @@
+/* -*- 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.
+ */
+
+// Calculate the taps for the CPM phase responses
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <cmath>
+#include <cfloat>
+#include <gr_cpm.h>
+
+#ifndef M_TWOPI
+#  define M_TWOPI (2*M_PI)
+#endif
+
+//! Normalised sinc function, sinc(x)=sin(pi*x)/pi*x
+inline double
+sinc(double x)
+{
+	if (x == 0) {
+		return 1.0;
+	}
+
+	return sin(M_PI * x) / (M_PI * x);
+}
+
+
+//! Taps for L-RC CPM (Raised cosine of length L symbols)
+std::vector<float>
+generate_cpm_lrc_taps(unsigned samples_per_sym, unsigned L)
+{
+	std::vector<float> taps(samples_per_sym * L, 1.0/L/samples_per_sym);
+	for (unsigned i = 0; i < samples_per_sym * L; i++) {
+		taps[i] *= 1 - cos(M_TWOPI * i / L / samples_per_sym);
+	}
+
+	return taps;
+}
+
+
+/*! Taps for L-SRC CPM (Spectral raised cosine of length L symbols).
+ *
+ * L-SRC has a time-continuous phase response function of
+ *
+ * g(t) = 1/LT * sinc(2t/LT) * cos(beta * 2pi t / LT) / (1 - (4beta / LT * t)^2)
+ *
+ * which is the Fourier transform of a cos-rolloff function with rolloff
+ * beta, and looks like a sinc-function, multiplied with a rolloff term.
+ * We return the main lobe of the sinc, i.e., everything between the
+ * zero crossings.
+ * The time-discrete IR is thus
+ *
+ * g(k) = 1/Ls * sinc(2k/Ls) * cos(beta * pi k / Ls) / (1 - (4beta / Ls * k)^2)
+ * where k = 0...Ls-1
+ * and s = samples per symbol.
+ */
+std::vector<float>
+generate_cpm_lsrc_taps(unsigned samples_per_sym, unsigned L, double beta)
+{
+	double Ls = (double) L * samples_per_sym;
+	std::vector<double> taps_d(L * samples_per_sym, 0.0);
+	std::vector<float> taps(L * samples_per_sym, 0.0);
+
+	double sum = 0;
+	for (unsigned i = 0; i < samples_per_sym * L; i++) {
+		double k =  i - Ls/2; // Causal to acausal
+
+		taps_d[i] = 1.0 / Ls * sinc(2.0 * k / Ls);
+
+		// For k = +/-Ls/4*beta, the rolloff term's cos-function becomes zero
+		// and the whole thing converges to PI/4 (to prove this, use de
+		// l'hopital's rule).
+		if (fabs(fabs(k) - Ls/4/beta) < 2*DBL_EPSILON) {
+			taps_d[i] *= M_PI_4;
+		} else {
+			double tmp = 4.0 * beta * k / Ls;
+			taps_d[i] *= cos(beta * M_TWOPI * k / Ls) / (1 - tmp * tmp);
+		}
+		sum += taps_d[i];
+	}
+	for (unsigned i = 0; i < samples_per_sym * L; i++) {
+		taps[i] = (float) taps_d[i] / sum;
+	}
+
+	return taps;
+}
+
+
+//! Taps for L-REC CPM (Rectangular pulse shape of length L symbols)
+std::vector<float>
+generate_cpm_lrec_taps(unsigned samples_per_sym, unsigned L)
+{
+	return std::vector<float>(samples_per_sym * L, 1.0/L/samples_per_sym);
+}
+
+
+//! Helper function for TFM
+double tfm_g0(double k, double sps)
+{
+	if (fabs(k) < 2 * DBL_EPSILON) {
+		return 1.145393004159143; // 1 + pi^2/48 / sqrt(2)
+	}
+
+	const double pi2_24 = 0.411233516712057; // pi^2/24
+	double f = M_PI * k / sps;
+	return sinc(k/sps) - pi2_24 * (2 * sin(f) - 2*f*cos(f) - f*f*sin(f)) / (f*f*f);
+}
+
+
+//! Taps for TFM CPM (Tamed frequency modulation)
+//
+// See [2, Chapter 2.7.2].
+//
+// [2]: Anderson, Aulin and Sundberg; Digital Phase Modulation
+std::vector<float>
+generate_cpm_tfm_taps(unsigned sps, unsigned L)
+{
+	unsigned causal_shift = sps * L / 2;
+	std::vector<double> taps_d(sps * L, 0.0);
+	std::vector<float> taps(sps * L, 0.0);
+
+	double sum = 0;
+	for (unsigned i = 0; i < sps * L; i++) {
+		double k = (double)(((int)i) - ((int)causal_shift)); // Causal to acausal
+
+		taps_d[i] =     tfm_g0(k - sps, sps) +
+		            2 * tfm_g0(k,       sps) +
+		                tfm_g0(k + sps, sps);
+		sum += taps_d[i];
+	}
+	for (unsigned i = 0; i < sps * L; i++) {
+		taps[i] = (float) taps_d[i] / sum;
+	}
+
+	return taps;
+}
+
+
+//! Taps for Gaussian CPM. Phase response is truncated after \p L symbols.
+//  \p bt sets the 3dB-time-bandwidth product.
+//
+// Note: for h = 0.5, this is the phase response for GMSK.
+//
+// This C99-compatible formula for the taps is taken straight
+// from [1, Chapter 9.2.3].
+// A version in Q-notation can be found in [2, Chapter 2.7.2].
+//
+// [1]: Karl-Dirk Kammeyer; Nachrichtenübertragung, 4th Edition.
+// [2]: Anderson, Aulin and Sundberg; Digital Phase Modulation
+//
+std::vector<float>
+generate_cpm_gaussian_taps(unsigned samples_per_sym, unsigned L, double bt)
+{
+	double Ls = (double) L * samples_per_sym;
+	std::vector<double> taps_d(L * samples_per_sym, 0.0);
+	std::vector<float> taps(L * samples_per_sym, 0.0);
+
+	// alpha = sqrt(2/ln(2)) * pi * BT
+	double alpha = 5.336446256636997 * bt;
+	for (unsigned i = 0; i < samples_per_sym * L; i++) {
+		double k =  i - Ls/2; // Causal to acausal
+		taps_d[i] = (erf(alpha * (k / samples_per_sym + 0.5)) -
+		             erf(alpha * (k / samples_per_sym - 0.5)))
+			        * 0.5 / samples_per_sym;
+		taps[i] = (float) taps_d[i];
+	}
+
+	return taps;
+}
+
+
+std::vector<float>
+gr_cpm::phase_response(cpm_type type, unsigned samples_per_sym, unsigned L, double beta)
+{
+	switch (type) {
+		case LRC:
+			return generate_cpm_lrc_taps(samples_per_sym, L);
+
+		case LSRC:
+			return generate_cpm_lsrc_taps(samples_per_sym, L, beta);
+
+		case LREC:
+			return generate_cpm_lrec_taps(samples_per_sym, L);
+
+		case TFM:
+			return generate_cpm_tfm_taps(samples_per_sym, L);
+
+		case GAUSSIAN:
+			return generate_cpm_gaussian_taps(samples_per_sym, L, beta);
+
+		default:
+			return generate_cpm_lrec_taps(samples_per_sym, 1);
+	}
+}
+
diff --git a/gnuradio-core/src/lib/general/gr_cpm.h b/gnuradio-core/src/lib/general/gr_cpm.h
new file mode 100644
index 000000000..cae6fe313
--- /dev/null
+++ b/gnuradio-core/src/lib/general/gr_cpm.h
@@ -0,0 +1,80 @@
+/* -*- 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.
+ */
+
+
+#ifndef INCLUDED_GR_CPM_H
+#define INCLUDED_GR_CPM_H
+
+#include <vector>
+
+class gr_cpm
+{
+ public:
+	enum cpm_type {
+	 LRC,
+	 LSRC,
+	 LREC,
+	 TFM,
+	 GAUSSIAN,
+	 GENERIC = 999
+	};
+
+    /*! \brief Return the taps for an interpolating FIR filter (gr_interp_fir_filter_fff).
+	 *
+	 * These taps represent the phase response \f$g(k)\f$ for use in a CPM modulator,
+	 * see also gr_cpmmod_bc.
+	 *
+	 * \param type The CPM type (Rectangular, Raised Cosine, Spectral Raised Cosine,
+	 *             Tamed FM or Gaussian).
+	 * \param samples_per_sym Samples per symbol.
+	 * \param L The length of the phase response in symbols.
+	 * \param beta For Spectral Raised Cosine, this is the rolloff factor. For Gaussian
+	 *             phase responses, this the 3dB-time-bandwidth product. For all other
+	 *             cases, it is ignored.
+	 *
+	 * Output: returns a vector of length \a K = \p samples_per_sym x \p L.
+	 *         This can be used directly in an interpolating FIR filter such as
+	 *         gr_interp_fir_filter_fff with interpolation factor \p samples_per_sym.
+	 *
+	 * All phase responses are normalised s.t. \f$ \sum_{k=0}^{K-1} g(k) = 1\f$; this will cause
+	 * a maximum phase change of \f$ h \cdot \pi\f$ between two symbols, where \a h is the
+	 * modulation index.
+	 *
+	 * The following phase responses can be generated:
+	 * - LREC: Rectangular phase response.
+	 * - LRC: Raised cosine phase response, looks like 1 - cos(x).
+	 * - LSRC: Spectral raised cosine. This requires a rolloff factor beta.
+	 *         The phase response is the Fourier transform of raised cosine
+	 *         function.
+	 * - TFM: Tamed frequency modulation. This scheme minimizes phase change for
+	 *        rapidly varying input symbols.
+	 * - GAUSSIAN: A Gaussian phase response. For a modulation index h = 1/2, this
+	 *             results in GMSK.
+	 *
+	 * A short description of all these phase responses can be found in [1].
+	 *
+	 * [1]: Anderson, Aulin and Sundberg; Digital Phase Modulation
+     */
+	static std::vector<float>
+	phase_response(cpm_type type, unsigned samples_per_sym, unsigned L, double beta=0.3);
+};
+
+#endif /* INCLUDED_GR_CPM_H */
+
diff --git a/gnuradio-core/src/lib/general/gr_cpm.i b/gnuradio-core/src/lib/general/gr_cpm.i
new file mode 100644
index 000000000..f01aba34e
--- /dev/null
+++ b/gnuradio-core/src/lib/general/gr_cpm.i
@@ -0,0 +1,40 @@
+/* -*- C++ -*- */
+/*
+ * Copyright 2010 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.
+ */
+
+%rename(cpm) gr_cpm;
+
+class gr_cpm
+{
+ public:
+	enum cpm_type {
+	 LRC,
+	 LSRC,
+	 LREC,
+	 TFM,
+	 GAUSSIAN,
+	 GENERIC = 999
+	};
+
+	static std::vector<float>
+	phase_response(cpm_type type, unsigned samples_per_sym, unsigned L, double beta=0.3);
+};
+
diff --git a/gnuradio-core/src/lib/general/qa_general.cc b/gnuradio-core/src/lib/general/qa_general.cc
index 6984d798c..b9080f362 100644
--- a/gnuradio-core/src/lib/general/qa_general.cc
+++ b/gnuradio-core/src/lib/general/qa_general.cc
@@ -28,6 +28,7 @@
 #include <qa_general.h>
 #include <qa_gr_firdes.h>
 #include <qa_gr_circular_file.h>
+#include <qa_gr_cpm.h>
 #include <qa_gr_fxpt.h>
 #include <qa_gr_fxpt_nco.h>
 #include <qa_gr_fxpt_vco.h>
@@ -41,6 +42,7 @@ qa_general::suite ()
 
   s->addTest (qa_gr_firdes::suite ());
   s->addTest (qa_gr_circular_file::suite ());
+  s->addTest (qa_gr_cpm::suite ());
   s->addTest (qa_gr_fxpt::suite ());
   s->addTest (qa_gr_fxpt_nco::suite ());
   s->addTest (qa_gr_fxpt_vco::suite ());
diff --git a/gnuradio-core/src/lib/general/qa_gr_cpm.cc b/gnuradio-core/src/lib/general/qa_gr_cpm.cc
new file mode 100644
index 000000000..cc32d1117
--- /dev/null
+++ b/gnuradio-core/src/lib/general/qa_gr_cpm.cc
@@ -0,0 +1,140 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2010 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 <qa_gr_cpm.h>
+#include <gr_cpm.h>
+#include <cppunit/TestAssert.h>
+
+const double DELTA = 1e-5;
+const int L = 5;
+const int samples_per_sym = 4;
+const float taps_lrc[20] = {
+                   0, 0.002447174185242, 0.009549150281253, 0.020610737385376,
+   0.034549150281253, 0.050000000000000, 0.065450849718747, 0.079389262614624,
+   0.090450849718747, 0.097552825814758, 0.100000000000000, 0.097552825814758,
+   0.090450849718747, 0.079389262614624, 0.065450849718747, 0.050000000000000,
+   0.034549150281253, 0.020610737385376, 0.009549150281253, 0.002447174185242
+};
+
+
+const float taps_lsrc[20] = { // beta = 0.2
+   0.000000000000000, 0.009062686687436, 0.019517618142920, 0.030875041875917,
+   0.042552315421249, 0.053912556756416, 0.064308860403517, 0.073130584159352,
+   0.079847961304114, 0.084051371489937, 0.085482007518284, 0.084051371489937,
+   0.079847961304114, 0.073130584159352, 0.064308860403517, 0.053912556756416,
+   0.042552315421249, 0.030875041875917, 0.019517618142920, 0.009062686687436
+};
+
+
+const float taps_tfm[20] = {
+  -0.003946522220317, -0.005147757690530, -0.003171631690177,  0.003959659609805,
+   0.017498721302356,  0.037346982678383,  0.062251889790391,  0.087364237065604,
+   0.110049050955117,  0.125677762224511,  0.132288693729399,  0.125677762224511,
+   0.110049050955117,  0.087364237065604,  0.062251889790391,  0.037346982678383,
+   0.017498721302356,  0.003959659609805, -0.003171631690177, -0.005147757690530
+};
+
+
+const float taps_gaussian[20] = { // BT = 0.3
+   0.000000743866524, 0.000009286258371, 0.000085441834550, 0.000581664421923,
+   0.002945540765422, 0.011178079812344, 0.032117220937421, 0.070841188736816,
+   0.122053715366673, 0.167389736919915, 0.185594670675172, 0.167389736919915,
+   0.122053715366673, 0.070841188736816, 0.032117220937421, 0.011178079812344,
+   0.002945540765422, 0.000581664421923, 0.000085441834550, 0.000009286258371
+};
+
+
+// Check LREC phase response
+void
+qa_gr_cpm::t1 ()
+{
+	std::vector<float> taps(gr_cpm::phase_response(gr_cpm::LREC, samples_per_sym, L));
+
+	for (int i = 0; i < L * samples_per_sym; i++) {
+		CPPUNIT_ASSERT_DOUBLES_EQUAL(taps[i], 0.05, DELTA);
+	}
+}
+
+
+// Check LRC phase response
+void
+qa_gr_cpm::t2 ()
+{
+	std::vector<float> taps(gr_cpm::phase_response(gr_cpm::LRC, samples_per_sym, L));
+	float sum = 0;
+
+	for (int i = 0; i < L * samples_per_sym; i++) {
+		CPPUNIT_ASSERT_DOUBLES_EQUAL(taps[i], taps_lrc[i], DELTA);
+		sum += taps[i];
+	}
+
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(sum, 1.0, DELTA);
+}
+
+
+// Check LSRC phase response
+void
+qa_gr_cpm::t3 ()
+{
+	std::vector<float> taps(gr_cpm::phase_response(gr_cpm::LSRC, samples_per_sym, L, 0.2));
+	float sum = 0;
+
+	for (int i = 0; i < L * samples_per_sym; i++) {
+		CPPUNIT_ASSERT_DOUBLES_EQUAL(taps[i], taps_lsrc[i], DELTA);
+		sum += taps[i];
+	}
+
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(sum, 1.0, DELTA);
+}
+
+
+// Check the TFM phase response
+void
+qa_gr_cpm::t4 ()
+{
+	std::vector<float> taps(gr_cpm::phase_response(gr_cpm::TFM, samples_per_sym, L));
+	float sum = 0;
+
+	for (int i = 0; i < L * samples_per_sym; i++) {
+		CPPUNIT_ASSERT_DOUBLES_EQUAL(taps[i], taps_tfm[i], DELTA);
+		sum += taps[i];
+	}
+
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(sum, 1.0, DELTA);
+}
+
+
+// Check the Gaussian phase response
+void
+qa_gr_cpm::t5 ()
+{
+	std::vector<float> taps(gr_cpm::phase_response(gr_cpm::GAUSSIAN, samples_per_sym, L, 0.3));
+	float sum = 0;
+
+	for (int i = 0; i < L * samples_per_sym; i++) {
+		CPPUNIT_ASSERT_DOUBLES_EQUAL(taps[i], taps_gaussian[i], DELTA);
+		sum += taps[i];
+	}
+
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(sum, 1.0, DELTA);
+}
+
diff --git a/gnuradio-core/src/lib/general/qa_gr_cpm.h b/gnuradio-core/src/lib/general/qa_gr_cpm.h
new file mode 100644
index 000000000..741cb2860
--- /dev/null
+++ b/gnuradio-core/src/lib/general/qa_gr_cpm.h
@@ -0,0 +1,49 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2010 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.
+ */
+#ifndef _QA_GR_CPM_H
+#define _QA_GR_CPM_H
+
+#include <cppunit/extensions/HelperMacros.h>
+#include <cppunit/TestCase.h>
+
+class qa_gr_cpm : public CppUnit::TestCase {
+
+  CPPUNIT_TEST_SUITE (qa_gr_cpm);
+  CPPUNIT_TEST (t1);
+  CPPUNIT_TEST (t2);
+  CPPUNIT_TEST (t3);
+  CPPUNIT_TEST (t4);
+  CPPUNIT_TEST (t5);
+  CPPUNIT_TEST_SUITE_END ();
+
+ private:
+  void t1 ();
+  void t2 ();
+  void t3 ();
+  void t4 ();
+  void t5 ();
+
+};
+
+
+#endif /* _QA_GR_CPM_H */
+