readcondep.py

#!/usr/bin/python 

#===============================================================
#  readcondep.py - A utility to inspect CartChunk'ed BWF files,
#  such as those generated by the ContentDepot(TM) system.
#  Uses the cdpfile.py library functions
#  February 4, 2010
#
#===============================================================
#
#===============================================================
#License (see the MIT License)
#
#Copyright (c) 2010 John McMellen
#
#Permission is hereby granted, free of charge, to any person
#obtaining a copy of this software and associated documentation
#files (the "Software"), to deal in the Software without
#restriction, including without limitation the rights to use,
#copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the
#Software is furnished to do so, subject to the following
#conditions:
#
#The above copyright notice and this permission notice shall be
#included in all copies or substantial portions of the Software.
#
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
#EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
#OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
#NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
#HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
#WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
#FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
#OTHER DEALINGS IN THE SOFTWARE.
#
#=================================================================

from cdpwavefile import *
from optparse import OptionParser
import sys

program_version = "1.4"

chunklist = ("cart", "bext", "mext", "fact", "fmt")
parser = OptionParser(usage="usage: %prog [options] wavefile")
parser.add_option("-v", "--ver", dest="show_version",
	action="store_true", default=False,
	help="show program version")
for chunkname in chunklist:
    parser.add_option("--" + chunkname, action="store_true", 
	    dest="show" + chunkname, 
	    help="show the values stored in the {0} chunk".format(chunkname))
parser.add_option("-a", "--all", dest="show_all_chunks", action="store_true",
	help="show info in all chunks", default=False)
parser.add_option("--save-cart", dest="cart_xml_filename",
	help="save cart chunk data to FILE for transfer", metavar="FILE")
parser.add_option("-x", "--extract-mp2", dest="mp2filename",
	help="extract MP2 audio to FILE", metavar="FILE")
parser.add_option("--tagtext-out", dest="tagtextoutfile", 
	help="export TagText value to FILE", metavar="FILE")
(options, args) = parser.parse_args()

def main():
    if options.show_version:
	print "Readcondep Version {0}/Core version {1}".format(program_version,
		cdpwavefile_core_version)
	if len(args) != 1:
	    sys.exit()
    picked_at_least_one_option = False
    if len(args) != 1:
	parser.error("Input file not specified. Try {0} -h for detailed help."
		.format(os.path.basename(sys.argv[0])))

    MyCDPFile = CDPFile()
    try:
	foundchunks = MyCDPFile.ReadWaveFile(args[0])
	foundchunks.remove('data')
	if options.show_all_chunks:
	    for chunkname in foundchunks:
		if hasattr(options, "show" + chunkname):
		    setattr(options, "show" + chunkname, True)
		else:
		    print "Unknown chunk '{0}' found, skipping".format(
			    chunkname)
	for chunkname in chunklist:
	    if ( getattr(options, "show" + chunkname) and 
	           (chunkname not in foundchunks) ):
		print "Chunk ID '{0}' not found".format(chunkname)
		picked_at_least_one_option = True
	for chunkname in foundchunks:
	    if hasattr(options, "show" + chunkname):
		if getattr(options, "show" + chunkname):
		    print "--Contents of {0} chunk--".format(chunkname)
		    print str(getattr(MyCDPFile, chunkname))
		    picked_at_least_one_option = True
	if options.tagtextoutfile is not None:
	    with open(options.tagtextoutfile, 'w') as f:
		print "Saving TagText to {0}".format(
			options.tagtextoutfile)
		f.write(MyCDPFile.cart.tagtext)
	    picked_at_least_one_option = True
	if options.mp2filename is not None:
	    print "Saving MP2 audio to {0}".format(
		    options.mp2filename)
	    MyCDPFile.ExportMpegFile(options.mp2filename)
	    picked_at_least_one_option = True
	if options.cart_xml_filename is not None:
	    with open(options.cart_xml_filename, 'w') as x:
		print "Saving cart chunk to {0}".format(
			options.cart_xml_filename)
		x.write(MyCDPFile.cart.ExportXMLValues())
	    picked_at_least_one_option = True

	if not picked_at_least_one_option:
	    if "cart" in foundchunks:
		chunkname = "cart"
		print "--Contents of {0} chunk--".format(chunkname)
		print str(getattr(MyCDPFile, chunkname))
	    else:
		print "CartChunk data not found"
    except IOError as inst:
	print "An IO error occurred"
	print inst
    except Exception as inst:
	print "An error occurred"
	print inst

if __name__ == "__main__":
    main()