Hi, I am revisiting what the ISO says about predictors and found... that predictors are not considered by the PDF as a filter, they are an internal part of the LZWDecode and FlateDecode filters as stated in the 7.4.4.3 section.
I think that it is still usefull for correct decoupling that the predictors are implemented as a separate filter. Then, it is the pdf_stm_filter_install() function who must test for [LZW,Flate]Decode filters wheter they should be "predicted" first and create the predictor filter in that case. What do you think? JP
