Fixed several bugs. Most serious one is a segfault for a stream without input.

CMakeLists.txt

@@ -19,7 +19,7 @@ option(LASP_RTAUDIO "Compile with RtAudio Daq backend" ON)
 option(LASP_ULDAQ "Compile with UlDaq backend" ON)
 option(LASP_DEBUG "Compile in debug mode" ON)
 option(LASP_FFTW_BACKEND "Compile with FFTW fft backend" ON)
-option(LAS_FFTPACK_BACKEND "Compile with Fftpack fft backend" OFF)
+option(LASP_FFTPACK_BACKEND "Compile with Fftpack fft backend" OFF)
 
 if(LASP_PARALLEL)
 add_definitions(-DLASP_MAX_NUM_THREADS=30)

lasp/device/lasp_daq.pyx

@@ -93,6 +93,8 @@ cdef void audioCallbackPythonThreadFunction(void* voidsd) nogil:
         # print(f'Number of input channels: {ninchannels}')
         # print(f'Number of out channels: {noutchannels}')
         # fprintf(stderr, 'Sleep time: %d us\n', sleeptime_us)
+
+    if sd.outQueue:
         for i in range(nblocks_buffer):
             outbuffer = <double*> malloc(sizeof(double)*nBytesPerChan*noutchannels)
             memset(outbuffer, 0, sizeof(double)*nBytesPerChan*noutchannels)

lasp/lasp_avstream.py

@@ -107,6 +107,7 @@ class AudioStream:
         processCallback: callback function that will be called from a different
         thread, with arguments (AudioStream, in
         """
+        logging.debug('AudioStream()')
 
         self.running = Atomic(False)
         self.aframectr = Atomic(0)
@@ -130,6 +131,10 @@ class AudioStream:
         self.daq = Daq(device, daqconfig)
         en_in_ch = daqconfig.getEnabledInChannels(include_monitor=True)
         en_out_ch = daqconfig.getEnabledOutChannels()
+        if en_in_ch == 0 and en_out_ch == 0:
+            raise RuntimeError('No enabled input / output channels')
+
+        logging.debug('Ready to start device...')
 
         samplerate = self.daq.start(self.streamCallback)
         self.streammetadata = StreamMetaData(

test/CMakeLists.txt

@@ -11,5 +11,7 @@ target_link_libraries(test_fft lasp_lib)
 target_link_libraries(test_workers lasp_lib)
 target_link_libraries(test_math lasp_lib)
 
+if(LASP_ULDAQ)
     add_executable(test_uldaq test_uldaq.cpp)
     target_link_libraries(test_uldaq cpp_daq)
+endif(LASP_ULDAQ)