Converting a matlab function to java

Hi all,

I am converting my matlab functions to java. In my matlab function there is a line

hmfr = video.MultimediaFileReader(path)

When i convert it in to java and when i run that method java gives a error

undefined variable "video" or class "video.MultimediaFileReader"

can you help me to solve this problem. Thank you.

Answer 1

[Friedrich]

Hi,

What do you mean with converting to Java? Are you talking about MATLAB Builder JA? The error looks like a ML error and it looks like the class is not compiled into the java class. Maybe take a look at the generated mccExcludedfiles.log file for some information regarding that the function is excluded from compiling. If there aren't any information try to add

%#function video.MultimediaFileReader

in the top of your main MATLAB function. This will tell the compiler to explicit include this into the compiled java class.

[Anne Fernando]

HI,

Thanks for the reply. Yes. i am talking about MATLAB Builder JA. i check the mccExcludedfiles.log file. MultimediaFileReader didn't appear there. so i added %#function video.MultimediaFileReader. But it didn't help either. What should i do next.

thanx.

[Friedrich]

Hi,

I have done a small test with 11a 64bit and compiled an exe. The video.MultimediaFileReader was included and it worked fine. I hadn't to add anything to get it working. Can you compile a small example like:

out = video.MultimediaFileReader('C:\Program Files\MATLAB\R2011a\toolbox\vision\visiondemos\vipmen.avi')

and run it successfully? Maybe start with an exe first and later go over to java.