I can't really test this right now, but you could insert %include <cdata.i> into your project's swig file[1]; this should generate a python method cdata(ptr, length) that you can feed your blob_data() to. I'm not quite sure that WILL work as is, maybe you will need a C(++) wrapper that simply returns an array of known type (that is, int* instead of void*) that you can yourself wrap into a SWIG array_class (like in the linked document).
Greetings Marcus [1] http://www.swig.org/Doc1.3/Library.html#Library_nn7 On 08/04/2013 04:37 AM, Peter Horvath wrote:
Hi, can I convert a blob created by my C++ code (unsigned chars) to a Python list or NumPy array? pmt.blob_data() returns a 'SwigPyObject' with which I can't do anything. Passing it to a NumPy array constructor doesn't seem to do the job. The blobs are in a tuple: pmt::pmt_t b1 = pmt::make_blob(a, a_length); pmt::pmt_t b2 = pmt::make_blob(b, b_length); return pmt::make_tuple(b1, b2); And I try to check the contents of b1 in QA code like this: res = my_test_function() b1 = pmt.blob_data(pmt.tuple_ref(res, 0)) b1_len = pmt.blob_length(pmt.tuple_ref(res, 0)) Thanks, Peter _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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