rtmixer_build.py

# This is used to create the _rtmixer extension module (see setup.py).

from cffi import FFI
import pa_ringbuffer

RINGBUFFER_CDEF = pa_ringbuffer.cdef()

ffibuilder = FFI()
ffibuilder.cdef(RINGBUFFER_CDEF)
ffibuilder.cdef("""

/* From limits.h: */

#define ULONG_MAX ...

""")
ffibuilder.cdef(open('src/rtmixer.h').read())
ffibuilder.set_source(
    '_rtmixer',
    RINGBUFFER_CDEF + open('src/rtmixer.c').read(),
    include_dirs=['src', 'portaudio/include'],
    sources=['portaudio/src/common/pa_ringbuffer.c'],
    #extra_compile_args=['-Wconversion'],
    # TODO: release mode by default, option for using debug mode
    undef_macros=['NDEBUG'],
)

if __name__ == '__main__':
    ffibuilder.compile(verbose=True)