initial commit

Author: ha7ilm

Makefile

@@ -0,0 +1,66 @@
+# This software is part of libcsdr, a set of simple DSP routines for 
+# Software Defined Radio under BSD license.
+#
+# Copyright (c) 2014, Andras Retzler <[email protected]>
+# All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in the
+#      documentation and/or other materials provided with the distribution.
+#    * Neither the name of the copyright holder nor the
+#      names of its contributors may be used to endorse or promote products
+#      derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL ANDRAS RETZLER BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+
+LIBSOURCES =  fft_fftw.c libcsdr_wrapper.c 
+#SOURCES = csdr.c $(LIBSOURCES)
+cpufeature = $(if $(findstring $(1),$(shell cat /proc/cpuinfo)),$(2))
+PARAMS_SSE = $(call cpufeature,sse,-msse) $(call cpufeature,sse2,-msse2) $(call cpufeature,sse3,-msse3) $(call cpufeature,sse4,-msse4) $(call cpufeature,sse4_1,-msse4.1) $(call cpufeature,sse4_2,-msse4.2) -mfpmath=sse 
+PARAMS_NEON = -fshort-double -mfloat-abi=softfp -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mvectorize-with-neon-quad -Wformat=0
+PARAMS_SIMD = $(if $(call cpufeature,sse,dummy-text),$(PARAMS_SSE),$(PARAMS_NEON))
+PARAMS_LOOPVECT = -O3 -ffast-math -fdump-tree-vect-details -dumpbase dumpvect
+PARAMS_LIBS = -g -lm -lfftw3f -DUSE_FFTW -DLIBCSDR_GPL
+PARAMS_SO = -fpic  
+PARAMS_MISC = -Wno-unused-result
+
+all: clean-vect
+	@echo NOTE: you may have to manually edit Makefile to optimize for your CPU \(especially if you compile on ARM, please edit PARAMS_NEON\).
+	@echo Auto-detected optimization parameters: $(PARAMS_SIMD)
+	@echo
+	c99 $(PARAMS_LOOPVECT) $(PARAMS_SIMD) $(LIBSOURCES) $(PARAMS_LIBS) $(PARAMS_MISC) -fpic -shared -o libcsdr.so
+	./parsevect dumpvect*.vect libcsdr.c
+	c99 $(PARAMS_LOOPVECT) $(PARAMS_SIMD) csdr.c $(PARAMS_LIBS) -L. -lcsdr $(PARAMS_MISC) -o csdr
+arm-cross: clean-vect
+	#note: this doesn't work since having added FFTW
+	arm-linux-gnueabihf-gcc -std=c99 -O3 -fshort-double -ffast-math -dumpbase dumpvect-arm -fdump-tree-vect-details -mfloat-abi=softfp -march=armv7-a -mtune=cortex-a9 -mfpu=neon -mvectorize-with-neon-quad -Wno-unused-result -Wformat=0 $(SOURCES) -lm -o ./csdr
+clean-vect:
+	rm -f dumpvect*.vect
+clean: clean-vect
+	rm libcsdr.so csdr 
+install: 
+	install -m 0755 libcsdr.so /usr/lib
+	install -m 0755 csdr /usr/bin
+	install -m 0755 csdr-fm /usr/bin
+	ldconfig
+uninstall:
+	rm /usr/lib/libcsdr.so /usr/bin/csdr /usr/bin/csdr-fm
+	ldconfig
+
+	
+

README.md

@@ -0,0 +1,41 @@
+#!/bin/bash
+: '
+Copyright (c) 2014, Andras Retzler <[email protected]>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer. 
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+'
+
+USAGE="csdr-fm: a script to listen to FM radio with RTL-SDR and csdr.
+
+usage:
+	csdr-fm frequency_mhz [gain_db]
+
+example:
+	csdr-fm 89.5
+	csdr-fm 89.5 30
+
+"
+GAIN=30
+if [ $# -eq 2 ]; then GAIN="$2"; fi
+if [ $# -eq 0 ]; then echo "$USAGE"; exit -1; fi
+
+rtl_sdr -s 2400000 -f `python -c "print int($1*1e6)"` -g $GAIN - | csdr convert_u8_f | csdr fir_decimate_cc 10 0.05 HAMMING | csdr fmdemod_quadri_cf | csdr fractional_decimator_ff 5 | csdr deemphasis_wfm_ff 48000 50e-6 | csdr convert_f_i16 | mplayer -cache 1024 -quiet -rawaudio samplesize=2:channels=1:rate=48000 -demuxer rawaudio -