base64_decode_step

Description:

public static size_t base64_decode_step (uint8 inbuf, size_t inlen, uint8 outbuf, int state, uint32 save)

Decodes a chunk of base64 encoded data.

inbuf	input buffer
inlen	input buffer length
outbuf	output buffer
state	holds the number of bits that are stored in `save`
save	leftover bits that have not yet been decoded

the number of bytes decoded (which have been dumped in outbuf).