+
+ # As per [1, 5.3.9.2.2] SegmentList and SegmentTemplate share some
+ # common attributes and elements. We will only extract relevant
+ # for us.
+ def extract_common(source):
+ segment_timeline = source.find(_add_ns('SegmentTimeline'))
+ if segment_timeline is not None:
+ s_e = segment_timeline.findall(_add_ns('S'))
+ if s_e:
+ ms_info['total_number'] = 0
+ ms_info['s'] = []
+ for s in s_e:
+ r = int(s.get('r', 0))
+ ms_info['total_number'] += 1 + r
+ ms_info['s'].append({
+ 't': int(s.get('t', 0)),
+ # @d is mandatory (see [1, 5.3.9.6.2, Table 17, page 60])
+ 'd': int(s.attrib['d']),
+ 'r': r,
+ })
+ start_number = source.get('startNumber')
+ if start_number:
+ ms_info['start_number'] = int(start_number)
+ timescale = source.get('timescale')
+ if timescale:
+ ms_info['timescale'] = int(timescale)
+ segment_duration = source.get('duration')
+ if segment_duration:
+ ms_info['segment_duration'] = int(segment_duration)
+
+ def extract_Initialization(source):
+ initialization = source.find(_add_ns('Initialization'))
+ if initialization is not None:
+ ms_info['initialization_url'] = initialization.attrib['sourceURL']
+