dump-wav-chunks.py

# -*- coding: utf-8 -*-

from struct import unpack

def do(f):
    (tag1, size, tag2) = unpack('<4sI4s', f.read(12))
    if not (tag1 == 'RIFF' and tag2 == 'WAVE'):
        print 'not wave file.'
        return

    eof = size + 8
    while f.tell() < eof:
        (tag, size) = unpack('<4sI', f.read(8))
        print '%s\t%d' % (tag, size)
        f.read(size)

if __name__ == '__main__':
    import sys
    do(sys.stdin)