Is there any way to retrieve flags from SWS context?
When creating SWS context, it can silently internally modify sent flags.
For instance, if trying to sett context flags to SWS_BICUBIC, in many cases
flags for the context are actually set to SWS_BICUBIC | SWS_FULL_CHR_H_INT
Then later, if trying to get cached SWS context using f.ex.: