python bindings

Author: ckuethe

.gitignore

@@ -7,3 +7,6 @@ tags
 dumpvect.*.vect
 grc_tests/top_block.py
 *.swp
+csdrpy.i
+csdrpy.py*
+csdrpy_wrap.*

Makefile

@@ -43,9 +43,10 @@ PARAMS_MISC = -Wno-unused-result
 #PARAMS_DEBUG = $(if $(DEBUG_ON),-g,)
 FFTW_PACKAGE = fftw-3.3.3
 PREFIX ?= /usr
+PYVERSION ?= 2.7
 SOVERSION = 0.15
 
-.PHONY: clean-vect clean
+.PHONY: clean-vect clean-python clean
 all: csdr nmux
 libcsdr.so: fft_fftw.c fft_rpi.c libcsdr_wrapper.c libcsdr.c libcsdr_gpl.c fastddc.c fastddc.h  fft_fftw.h  fft_rpi.h  ima_adpcm.h  libcsdr_gpl.h  libcsdr.h  predefined.h
 	@echo NOTE: you may have to manually edit Makefile to optimize for your CPU \(especially if you compile on ARM, please edit PARAMS_NEON\).
@@ -65,7 +66,7 @@ arm-cross: clean-vect
 	arm-linux-gnueabihf-gcc -std=gnu99 -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
+clean: clean-vect clean-python
 	rm -f libcsdr.so csdr ddcd nmux
 install: all 
 	install -m 0755 libcsdr.so $(PREFIX)/lib
@@ -98,3 +99,23 @@ emcc:
 	cat sdr.js/sdrjs-header.js sdr.js/sdrjs-compiled.js sdr.js/sdrjs-footer.js > sdr.js/sdr.js
 emcc-beautify:
 	bash -c 'type js-beautify >/dev/null 2>&1; if [ $$? -eq 0 ]; then js-beautify sdr.js/sdr.js >sdr.js/sdr.js.beautiful; mv sdr.js/sdr.js.beautiful sdr.js/sdr.js; fi'
+
+python: libcsdr.so clean-python
+	@echo "/* This file is autogenerated. Any changes should be made to csdrpy.i.in */" > csdrpy.i
+	@echo 'generating "csdrpy.i"'
+	@cat csdrpy.i.in >> csdrpy.i
+	@cat fastddc.h >> csdrpy.i
+	@cat fft_fftw.h >> csdrpy.i
+	@cat fft_rpi.h >> csdrpy.i
+	@cat ima_adpcm.h >> csdrpy.i
+	@cat libcsdr_gpl.h >> csdrpy.i
+	@cat libcsdr.h >> csdrpy.i
+	swig -python csdrpy.i
+	gcc -c -fPIC csdrpy_wrap.c -I/usr/include/python$(PYVERSION) -I.
+	gcc -shared  csdrpy_wrap.o -lcsdr -lfftw3f -lm -o _csdrpy.so
+
+clean-python:
+	rm -f csdrpy_wrap.c csdrpy_wrap.o _csdrpy.so csdrpy.py* csdrpy.i
+
+python-install: libcsdr.so
+	install -m 0755 csdrpy.py _csdrpy.so $(PREFIX)/lib/python$(PYVERSION)/

csdrpy.i.in

@@ -0,0 +1,21 @@
+%module csdrpy
+
+%{
+#define SWIG_FILE_WITH_INIT
+#define LIBCSDR_GPL
+#define USE_FFTW
+#define USE_IMA_ADPCM
+
+#include "predefined.h"
+#include "fastddc.h"
+#include "libcsdr.h"
+#include "libcsdr_gpl.h"
+#include "fft_fftw.h"
+#include "fft_rpi.h"
+#include "ima_adpcm.h"
+%}
+
+%feature("autodoc", "2");
+
+/* contents of libcsdr.h will be appended below for processing by swig */
+

csdrpy_test.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+
+import csdrpy
+
+csdrpy_syms = filter(lambda x: x.startswith('_') == False, dir(csdrpy))
+csdrpy_syms = set(csdrpy_syms)
+
+assert( csdrpy.is_nan(1.0) == False)
+assert( csdrpy.is_nan(float('NaN')) == True)
+assert( csdrpy.log2n(1) == 0 )
+assert( csdrpy.log2n(256) == 8)
+
+print 'Loaded {0} symbols'.format(len(csdrpy_syms))
+print 'csdr python binding works! :)'