Gif Info
gif-info is analyzer of the GIF image format. It performs complete
analysis of internal GIF block structure and streams it as an "object
stream" with metainformations of each block. Also can interpret internal
structure by providing the simple object-like interface to base image
file informations. Works above all seekable IO streams, so allows
processing of the big files too. Doesn't perform LZW decompressing,
returns raw data for both color tables and images.
Two different approaches are available: sequential and static.
First one yields "stream" of objects which are equivalent to functional
blocks in the GIF file and which contain low-level GIF data. It's
equivalent of for example SAX parser although, of sure, less
complex. The other one provides classical single object-like access to
interpreted file informations.
Examples of both are available in the bin
directory. git-info
command writes out content of the static information object, git-dump
dumps content of low level blocks stream.
Modifiing the file and writing changes back is possible (see StructFx
library documentation). It isn't implemented directly by this library,
but should be easy to implement it if you will need it -- with exception
of data blocks as comments or image data -- it's necessary split them
to blocks manually in your writing routine. Other structures provided
by the library contains binary serialization routines implicitly.
Copyright
Copyright © 2011 - 2016 Martin Poljak. See LICENSE.txt
for
further details.