</TT>=2
(separate planes).  This is important for algorithms such as JPEG.
If <TT>PlanarConfig</TT>=1 (interleaved), then sample will always be 0.

<A NAME=Other><P><HR WIDTH=65% ALIGN=right><H3>Other Comments</H3></A>

The library handles most I/O buffering.  There are two data buffers
when decoding data: a raw data buffer that holds all the data in a
strip, and a user-supplied scanline buffer that compression schemes
place decoded data into.  When encoding data the data in the
user-supplied scanline buffe