def clearIXML(): try: filename = sys.argv[1] if os.path.exists(filename): wavefile = PCWaveFile(filename) wavefile.clearIXMLChunk() else: print "The file",filename,"doesn't exist" except: print "No file was passed in as a variable"
def updatebwftimecode():
parser = argparse.ArgumentParser(description="Set Timecode for a Broadcast Wave File, Optionally write metadata to iXML, and display file information")
parser.add_argument( "filename", help="the file to process, represented as a path")
parser.add_argument('-t','--timecode', required=True, dest="timecode", help="the timecode value, displayed as either drop or non drop, wrapped in quotes")
parser.add_argument('-f', '--framerate', required=True, dest="framerate", help="an string representation of the framerate", choices=['2398', '24', '25', '2997', '2997DF', '30'])
parser.add_argument('-l','--tracklayout', dest="tracklayout", help="a tracklayout confirguration for the iXML file", choices=tracklayouts.tracklayoutRepresentation())
parser.add_argument('-x', '--noixml', dest="noixml", help="do not write ixml into file", action="store_true")
group = parser.add_mutually_exclusive_group()
group.add_argument('-v', '--verbose', dest="verbose", help="display iXML to screen", action="store_true")
group.add_argument('-o', '--outputfile', dest="outputfile", help="a path to a file to save information about the wav file you are updating")
args = parser.parse_args()
# bail if the timecode is not properly specified
if pctimecode.isTimeCodeSafe(args.timecode, args.framerate) == False:
print "-----------Timcode is invalid-----------"
return
useDropFrame = False
if args.framerate.find("DF") is not -1:
useDropFrame = True
filename = args.filename
layout = tracklayouts.tracklayouts
if os.path.exists(filename):
wavefile = PCWaveFile(filename)
newTimeReference = 0
fileSampleRate = wavefile.numberOfSamplesPerSecond()
# Calculate new timecode information
if args.framerate == '2398':
newTimeReference = pctimecode.convertTimeCodeToUnsignedLongLong2398(args.timecode, fileSampleRate)
elif args.framerate == '24':
newTimeReference = pctimecode.convertTimeCodeToUnsignedLongLong24(args.timecode, fileSampleRate)
elif args.framerate == '25':
newTimeReference = pctimecode.convertTimeCodeToUnsignedLongLong25(args.timecode, fileSampleRate)
elif args.framerate == '2997':
if useDropFrame == True:
newTimeReference = pctimecode.convertTimeCodeToUnsignedLongLong2997DF(args.timecode, fileSampleRate)
else:
newTimeReference = pctimecode.convertTimeCodeToUnsignedLongLong2997(args.timecode, fileSampleRate)
else:
newTimeReference = pctimecode.convertTimeCodeToUnsignedLongLong30(args.timecode, fileSampleRate)
wavefile.setTimeReference(newTimeReference)
# Set the layout of the files for the iXML chunk
suggestedTrackLayoutDictionary = {}
if args.tracklayout is not None:
suggestedTrackLayoutDictionary = {"suggestedTrackNameLayoutArray":layout[args.tracklayout]["trackNames"], "suggestedTrackFunctionLayoutArray":layout[args.tracklayout]["trackFunctions"]}
xmlstring = xmlStringForWaveFile(wavefile, useDropFrame, args.framerate, suggestedTrackLayoutDictionary)
# Check to see if we want to append the iXML to the file
if args.noixml == False:
wavefile.clearIXMLChunk()
addiXMLToWaveFile(wavefile, xmlstring)
# Write the iXML to stdout or file depending on the option
if args.verbose == True:
print "Sample Time Stamp:", newTimeReference
prettyprintxml(xmlstring)
elif args.outputfile is not None:
with open(args.outputfile, 'w+') as f:
f.write(xmlstring)
else:
print "file does not exist:", filename