def _generate_tfdt(self, seg_info):
if seg_info.start_time > 2**30:
version = 1
size = 20
else:
version = 0
size = 16
output = uint32_to_str(size) + 'tfdt'
if version == 0:
output += uint32_to_str(0x00000000) + uint32_to_str(
seg_info.start_time)
else:
output += uint32_to_str(0x01000000) + uint64_to_str(
seg_info.start_time)
return output
def process_tfdt(self, data, output):
"""Adjust time of tfdt if offset set."""
version = ord(data[8])
if version == 0: # 32-bit baseMediaDecodeTime
tfdt = str_to_uint32(data[12:16])
if self.offset != None:
tfdt += self.offset
output += data[:12] + uint32_to_str(tfdt) + data[16:]
else:
output += data
else:
output = data[:12]
tfdt = str_to_uint64(data[12:20])
if self.offset != None:
tfdt += self.offset
output += uint64_to_str(tfdt)
else:
output += data
self.tfdt = tfdt
return output
def process_tfdt(self, data, output):
"""Adjust time of tfdt if offset set."""
version = ord(data[8])
if version == 0: # 32-bit baseMediaDecodeTime
tfdt = str_to_uint32(data[12:16])
if self.offset != None:
tfdt += self.offset
output += data[:12] + uint32_to_str(tfdt) + data[16:]
else:
output += data
else:
output = data[:12]
tfdt = str_to_uint64(data[12:20])
if self.offset != None:
tfdt += self.offset
output += uint64_to_str(tfdt)
else:
output += data
self.tfdt = tfdt
return output