Open Source Document Management System | OpenKM

Please guide me can we achieve below points for PDF docs via openKM Professional Cloud APIs

1. I have metadata for rotating particular pages in PDF, is it possible to rotate pages by passing all the necessary data like page number, rotate degree and clokwise/anticlock wise via openKM API before save or while download

2. I would like to download particular pages from PDF document instead of whole document. Is it Possible via OpenKM

Here we got two options:
1- MInimal client in pc which connect to openkm and do it before upload to OpenKM.
2- Extend API to process documents already uploaded ( OpenKM only works with documents still uploaded )

About extend api : Both case are not implemented at the moment, but as a OpenKM customer we can implement it and extend actual OpenKM API. All the reslated problems seems are in direction of image managing into pdf files. For what you said are needed api with:
1- getInfo ( return document info for pdf, like number of pages )
2- getPage(int page) return specific page number ( for what you say each page should an image no ? )
3- rotate(int page, bool clockwise, int degree)