Utils

C/Python co-simulation utilities

cosim.utils.b64enc_int_list(lst, width, height)

Encode list of numbers as a base64 encoded PNG image.

Parameters

• lst – list of pixel values (len = height x width) in row-major order

• width – spatial width

• height – spatial height

cosim.utils.b64enc_list_of_int_lists(lst, width, height)

Convert list of lists of numbers to list of base64 encoded PNG images.

Parameters

• lst – list of lists of pixel values (len = height x width) in row-major order

• width – spatial width

• height – spatial height

cosim.utils.byte_buf(lst)

Convert array to a string buffer (uint8_t* in C).

Parameters

lst – list of naturals range [0,255]

cosim.utils.dlclose(obj)

Close/unload a PIE binary or a shared library.

Parameters

obj – object returned by ctypes.CDLL when the resource was loaded

cosim.utils.dlopen(path)

Open/load a PIE binary or a shared library.

cosim.utils.enc_args(args)

Convert args to a suitable format for a foreign C function.

Parameters

args – list of strings

cosim.utils.int_buf(lst, bpw=4, signed=True)

Convert array to a string buffer (uint8_t* in C).

Parameters

• lst – list of integers

• bpw – number of bytes per word/integer

• signed – whether to encode the numbers as signed

cosim.utils.read_byte_buf(buf)

Read byte/string buffer (uint8_t* in C) as a list of numbers.

cosim.utils.read_int_buf(buf, bpw=4, signed=True)

Read byte/string buffer as a list of numbers.

Parameters

• buf – byte/string buffer (uint8_t* in C) to read from

• bpw – number of bytes per word/integer

• signed – whether to decode the numbers as signed