104 lines
2.2 KiB
Python
104 lines
2.2 KiB
Python
#!/usr/bin/env python3
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#
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# bbb.py
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#
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# Utilities to parse BBB recording components
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#
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# Copyright (c) 2023 Sylvain Munaut <tnt@246tNt.com>
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# SPDX-License-Identifier: MIT
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#
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__all__ = [
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'CursorEvent',
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'parse_cursor_xml',
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'PresentEvent',
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'SlideRef',
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'parse_deskshare_xml',
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'parse_shapes_svg',
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'PanZoomEvent',
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'parse_panzooms_xml',
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]
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import re
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from collections import namedtuple
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import lxml.etree
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CursorEvent = namedtuple('CursorEvent', 'ts x y')
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def parse_cursor_xml(filename):
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rv = []
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xml_doc = lxml.etree.parse(filename)
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for element in xml_doc.xpath("//recording/event"):
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px, py = [float(x) for x in element.getchildren()[0].text.split()]
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rv.append(CursorEvent(
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float(element.get("timestamp")),
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px,
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py,
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))
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return rv
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PresentEvent = namedtuple('CursorEvent', 'ts_in ts_out slide')
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SlideRef = namedtuple('SlideRef', 'deck_id page')
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def parse_deskshare_xml(filename):
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rv = []
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xml_doc = lxml.etree.parse(filename)
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for element in xml_doc.xpath("//recording/event"):
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st = float(element.get("start_timestamp"))
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et = float(element.get("stop_timestamp"))
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rv.append( PresentEvent(st, et, None) )
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return rv
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def parse_shapes_svg(filename):
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rv = []
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xml_doc = lxml.etree.parse(filename)
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ns = {
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'svg': 'http://www.w3.org/2000/svg',
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'xlink': 'http://www.w3.org/1999/xlink',
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}
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for element in xml_doc.xpath("//svg:svg/svg:image", namespaces=ns):
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# Parse/Validate href
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href = element.get('{http://www.w3.org/1999/xlink}href')
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if href == "presentation/deskshare.png":
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slide = None
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else:
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m = re.match('^presentation/([0-9a-fA-F]{40,64}-[0-9]+)/slide-([0-9]+).png$', href)
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if not m:
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raise RuntimeError('Invalid presentation page link')
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slide = SlideRef(m.group(1), int(m.group(2)))
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# Append
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rv.append(PresentEvent(
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float(element.get('in')),
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float(element.get('out')),
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slide
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))
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return rv
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PanZoomEvent = namedtuple('PanZoomEvent', 'ts x y w h')
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def parse_panzooms_xml(filename):
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rv = []
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xml_doc = lxml.etree.parse(filename)
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for element in xml_doc.xpath("//recording/event"):
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x, y, w, h = [float(x) for x in element.getchildren()[0].text.split()]
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rv.append(PanZoomEvent(
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float(element.get("timestamp")),
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x,
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y,
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w,
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h,
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))
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return rv
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