def __init__(self, fdesc, rp210=None, debug=False):
InterchangeObject.__init__(self, fdesc, debug)
self.data = OrderedDict()
if rp210:
self.rp210 = rp210
else:
self.rp210 = Singleton(RP210)
if self.key and not re.search('060e2b34020501..0d01020101050100',
self.key.encode('hex_codec')):
raise S377MException('Not a valid Primer Pack key: %s' %
self.key.encode('hex_codec'))
def __init__(self, fdesc, primer, debug=False):
# Prepare object specific Primer
aprim = MXFPrimer.customize(primer,
Singleton(RP210, 'AvidAAFDefinition'),
self._extra_mappings)
MXFDataSet.__init__(self, fdesc, aprim, debug=debug, dark=True)
self.set_type = 'AvidAAFDefinition'
def __init__(self, fdesc, rp210=None, debug=False):
InterchangeObject.__init__(self, fdesc, debug)
self.data = OrderedDict()
if rp210:
self.rp210 = rp210
else:
self.rp210 = Singleton(RP210)
if self.key and not re.search('060e2b34020501..0d01020101050100', self.key.encode('hex_codec')):
raise S377MException('Not a valid Primer Pack key: %s' % self.key.encode('hex_codec'))
def __init__(self, fdesc, primer, debug=False):
aprim = MXFPrimer.customize(primer, Singleton(RP210Avid),
self._extra_mappings)
MXFDataSet.__init__(self, fdesc, aprim, debug=debug, dark=True)
self.set_type = 'Avid' + self.set_type
class MXFPrimer(InterchangeObject):
""" MXF Primer Pack parser. """
def __init__(self, fdesc, rp210=None, debug=False):
InterchangeObject.__init__(self, fdesc, debug)
self.data = OrderedDict()
if rp210:
self.rp210 = rp210
else:
self.rp210 = Singleton(RP210)
if self.key and not re.search('060e2b34020501..0d01020101050100', self.key.encode('hex_codec')):
raise S377MException('Not a valid Primer Pack key: %s' % self.key.encode('hex_codec'))
def __str__(self):
ret = ['<MXFPrimer']
ret += ['pos=%d' % self.pos]
ret += ['size=%d' % self.length]
ret += ['localtags=%d' % len(self.data)]
if self.debug:
ret += ['\n']
for i, j in self.data.items():
ret += ['%s: %s\n' % (i.encode('hex_codec'), j.encode('hex_codec'))]
return ' '.join(ret) + '>'
@staticmethod
def customize(primer, spec, mappings=None):
""" Modifies a primer to abide @spec rules with optional @mappings.
@spec: instance of a sjmxf.rp210 like object
@mappings: a dictionary that is passed to inject method
@returns: custimized Primer object.
"""
import copy
aprim = copy.copy(primer)
if mappings:
spec.inject(mappings)
aprim.data = {}
aprim.data.update(primer.data)
aprim.rp210 = spec
if mappings:
aprim.inject(mappings.keys())
return aprim
def inject(self, mappings):
""" Insert new mappings in Primer.
Allows insertion of new local tag to format UL mappings with their
RP210 basic type.
"""
for item in mappings:
self.data[item.decode('hex_codec')] = item.rjust(32, '0').decode('hex_codec')
return
def read(self):
data = self.fdesc.read(self.length)
lt_list_size = Integer(data[0:4], 'UInt32').read()
lt_item_size = Integer(data[4:8], 'UInt32').read()
idx = 8
while lt_list_size > len(self.data):
self.data[data[idx:idx+2]] = Reference(data[idx+2:idx+lt_item_size], 'Universal Label').read()
idx += lt_item_size
if self.debug:
print "%d local tag mappings in Primer Pack" % len(self.data)
return
def write(self):
ret = ""
for tag, ful in self.data.items():
ret += tag + Reference(ful, 'Universal Label').write()
lt_list_size = Integer(len(self.data), 'UInt32').write()
lt_item_size = Integer(len(ret) / len(self.data), 'UInt32').write()
ret = lt_list_size + lt_item_size + ret
self.pos = self.fdesc.tell()
self.length = len(ret)
self.fdesc.write(self.key + self.ber_encode_length(self.length, bytes_num=8).decode('hex_codec') + ret)
return
def decode_from_local_tag(self, tag, value):
""" Decode data according to local tag mapping to format Universal Labels. """
etag = tag.encode('hex_codec')
evalue = value.encode('hex_codec')
if tag not in self.data.keys():
print "Error: Local key '%s' not found in primer" % etag
return etag, evalue
#if not self.data[tag].startswith('060e2b34'.decode('hex_codec')):
# return "Error: '%s' does not map to a SMPTE format UL '%s'" % (etag, self.data[tag].encode('hex_codec'))
key = "unkown_data_format"
# SMTPE RP 210 conversion
try:
key = self.rp210.get_triplet_from_format_ul(self.data[tag])[1]
return key, self.rp210.convert(self.data[tag], value)
except RP210Exception, error:
print error
return key, evalue
class MXFPrimer(InterchangeObject):
""" MXF Primer Pack parser. """
def __init__(self, fdesc, rp210=None, debug=False):
InterchangeObject.__init__(self, fdesc, debug)
self.data = OrderedDict()
if rp210:
self.rp210 = rp210
else:
self.rp210 = Singleton(RP210)
if self.key and not re.search('060e2b34020501..0d01020101050100',
self.key.encode('hex_codec')):
raise S377MException('Not a valid Primer Pack key: %s' %
self.key.encode('hex_codec'))
def __str__(self):
ret = ['<MXFPrimer']
ret += ['pos=%d' % self.pos]
ret += ['size=%d' % self.length]
ret += ['localtags=%d' % len(self.data)]
if self.debug:
ret += ['\n']
for i, j in self.data.items():
ret += [
'%s: %s\n' % (i.encode('hex_codec'), j.encode('hex_codec'))
]
return ' '.join(ret) + '>'
@staticmethod
def customize(primer, spec, mappings=None):
""" Modifies a primer to abide @spec rules with optional @mappings.
@spec: instance of a sjmxf.rp210 like object
@mappings: a dictionary that is passed to inject method
@returns: custimized Primer object.
"""
import copy
aprim = copy.copy(primer)
if mappings:
spec.inject(mappings)
aprim.data = {}
aprim.data.update(primer.data)
aprim.rp210 = spec
if mappings:
aprim.inject(mappings.keys())
return aprim
def inject(self, mappings):
""" Insert new mappings in Primer.
Allows insertion of new local tag to format UL mappings with their
RP210 basic type.
"""
for item in mappings:
self.data[item.decode('hex_codec')] = item.rjust(
32, '0').decode('hex_codec')
return
def read(self):
data = self.fdesc.read(self.length)
lt_list_size = Integer(data[0:4], 'UInt32').read()
lt_item_size = Integer(data[4:8], 'UInt32').read()
idx = 8
while lt_list_size > len(self.data):
self.data[data[idx:idx + 2]] = Reference(
data[idx + 2:idx + lt_item_size], 'Universal Label').read()
idx += lt_item_size
if self.debug:
print "%d local tag mappings in Primer Pack" % len(self.data)
return
def write(self):
ret = ""
for tag, ful in self.data.items():
ret += tag + Reference(ful, 'Universal Label').write()
lt_list_size = Integer(len(self.data), 'UInt32').write()
lt_item_size = Integer(len(ret) / len(self.data), 'UInt32').write()
ret = lt_list_size + lt_item_size + ret
self.pos = self.fdesc.tell()
self.length = len(ret)
self.fdesc.write(self.key + self.ber_encode_length(
self.length, bytes_num=8).decode('hex_codec') + ret)
return
def decode_from_local_tag(self, tag, value):
""" Decode data according to local tag mapping to format Universal Labels. """
etag = tag.encode('hex_codec')
evalue = value.encode('hex_codec')
if tag not in self.data.keys():
print "Error: Local key '%s' not found in primer" % etag
return etag, evalue
#if not self.data[tag].startswith('060e2b34'.decode('hex_codec')):
# return "Error: '%s' does not map to a SMPTE format UL '%s'" % (etag, self.data[tag].encode('hex_codec'))
key = "unkown_data_format"
# SMTPE RP 210 conversion
try:
key = self.rp210.get_triplet_from_format_ul(self.data[tag])[1]
return key, self.rp210.convert(self.data[tag], value)
except RP210Exception, error:
print error
return key, evalue
