Hi,

Looking around I have read that the C equivalent Jpeglib is not thread safe.

I believe that the Pascal code is derived from the C.

Is the Free Pascal implementation of Jpeglib is thread safe?

I am using a class similar to FPReadJPEG and FPWriteJPEG from multiple threads, do I need some form of locking?

Thank you,

Shaun

It's an interesting question. Seems like the places that mention thread non-safety, mean something different, for example

From http://www.freedesktop.org/wiki/Software/libjpeg

(Note: the JPEG library currently is not thread-safe. You must not call jpeg_consume_input() from one thread of control if a different library routine is working on the same JPEG object in another thread.)

So I suppose when you're talking about different jpeg files, there should be no problem, at least I'm not aware of IJG code to be using global variables that can be a real tread in this case

Max Vlasov