https://github.com/RobBlackwell/cl-riff.git
git clone 'https://github.com/RobBlackwell/cl-riff.git'
(ql:quickload :cl-riff)
The Resource Interchange File Format (RIFF) is a generic file container format for storing data in tagged chunks. It is primarily used to store multimedia such as sound and video, though it may also be used to store any arbitrary data.
I wrote this code as a cross-platform way of processing WAV audio files. (See cl-wav).
Use read-riff-file to load a whole file, returning it's content as a list of chunks, where each chunk is a plist.
Alternatively, open the stream yourself and call read-chunk successively until NIL.
Chunks are represented as plists, with accessor methods defined for chunk-id, chunk-data-size, chunk-data and file-type.
> (ql:quickload :cl-riff)
> (riff:read-riff-file "c:/windows/media/ding.wav")
...
> (riff:riff-file-type (first *))
"WAVE"
Currently only supports reading files, not writing.
Resource Interchange File Format, Wikipedia
Resource Interchange File Format Services, MSDN
Resource Interchange File Format (RIFF), MSDN
Rob Blackwell
February 2014