Hi Steven Brossi,
As per my understanding of the question, to handle the variable length C-array you may use the following suggested methods:
- Create an opaque object to hold the length, then call the function to retrieve the length.
len = coder.opaque('int32_T', '0'); % Create an opaque object to hold the length
clib.MyLib.getBuffer(len); % Call the function to retrieve the length
% Convert the length to a MATLAB variable
lenValue = int32(len);
- Using a libpointer to create a pointer object lenof type int32Ptr to hold the length value and then call the function to retrieve the length.
% Call the function to get the length
len = libpointer('int32Ptr', 0);
clib.MyLib.getBuffer(len);
% Retrieve the length value
lenValue = len.Value;
You may also use "calllib" function with the "libpointer" function to first load the library functions and then call them to retrieve the value.
After retrieving the value of len from the above suggested methods you may create a buffer MATLAB Array and then call the function again with lenValue as the argument to get the bufferArray store the actual values.
% Allocate a MATLAB array
bufferArray = zeros(1, lenValue, 'uint8');
You may refer to the following MATLAB Documentation for better understanding of the functions above:
opaque object
libpointer function
calllib function
I hope this helps!
Thank You
Maneet Bagga
