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https://github.com/yt-dlp/yt-dlp.git
synced 2024-12-12 14:26:49 +01:00
[utils] add support for ttml styles
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Remita Amine
parent
75a2485407
commit
5b995f713b
@ -1069,6 +1069,47 @@ def test_dfxp2srt(self):
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'''
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self.assertEqual(dfxp2srt(dfxp_data_no_default_namespace), srt_data)
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dfxp_data_with_style = '''<?xml version="1.0" encoding="utf-8"?>
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<tt xmlns="http://www.w3.org/2006/10/ttaf1" xmlns:ttp="http://www.w3.org/2006/10/ttaf1#parameter" ttp:timeBase="media" xmlns:tts="http://www.w3.org/2006/10/ttaf1#style" xml:lang="en" xmlns:ttm="http://www.w3.org/2006/10/ttaf1#metadata">
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<head>
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<styling>
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<style id="s2" style="s0" tts:color="cyan" tts:fontWeight="bold" />
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<style id="s1" style="s0" tts:color="yellow" tts:fontStyle="italic" />
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<style id="s3" style="s0" tts:color="lime" tts:textDecoration="underline" />
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<style id="s0" tts:backgroundColor="black" tts:fontStyle="normal" tts:fontSize="16" tts:fontFamily="sansSerif" tts:color="white" />
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</styling>
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</head>
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<body tts:textAlign="center" style="s0">
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<div>
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<p begin="00:00:02.08" id="p0" end="00:00:05.84">default style<span tts:color="red">custom style</span></p>
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<p style="s2" begin="00:00:02.08" id="p0" end="00:00:05.84"><span tts:color="lime">part 1<br /></span><span tts:color="cyan">part 2</span></p>
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<p style="s3" begin="00:00:05.84" id="p1" end="00:00:09.56">line 3<br />part 3</p>
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<p style="s1" tts:textDecoration="underline" begin="00:00:09.56" id="p2" end="00:00:12.36"><span style="s2" tts:color="lime">inner<br /> </span>style</p>
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</div>
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</body>
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</tt>'''
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srt_data = '''1
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00:00:02,080 --> 00:00:05,839
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<font color="white" face="sansSerif" size="16">default style<font color="red">custom style</font></font>
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2
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00:00:02,080 --> 00:00:05,839
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<b><font color="cyan" face="sansSerif" size="16"><font color="lime">part 1
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</font>part 2</font></b>
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3
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00:00:05,839 --> 00:00:09,560
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<u><font color="lime">line 3
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part 3</font></u>
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4
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00:00:09,560 --> 00:00:12,359
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<i><u><font color="yellow"><font color="lime">inner
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</font>style</font></u></i>
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'''
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self.assertEqual(dfxp2srt(dfxp_data_with_style), srt_data)
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def test_cli_option(self):
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self.assertEqual(cli_option({'proxy': '127.0.0.1:3128'}, '--proxy', 'proxy'), ['--proxy', '127.0.0.1:3128'])
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self.assertEqual(cli_option({'proxy': None}, '--proxy', 'proxy'), [])
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@ -2511,27 +2511,97 @@ def srt_subtitles_timecode(seconds):
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def dfxp2srt(dfxp_data):
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LEGACY_NAMESPACES = (
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('http://www.w3.org/ns/ttml', [
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'http://www.w3.org/2004/11/ttaf1',
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'http://www.w3.org/2006/04/ttaf1',
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'http://www.w3.org/2006/10/ttaf1',
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]),
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('http://www.w3.org/ns/ttml#styling', [
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'http://www.w3.org/ns/ttml#style',
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]),
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)
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SUPPORTED_STYLING = [
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'color',
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'fontFamily',
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'fontSize',
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'fontStyle',
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'fontWeight',
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'textDecoration'
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]
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_x = functools.partial(xpath_with_ns, ns_map={
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'ttml': 'http://www.w3.org/ns/ttml',
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'ttaf1': 'http://www.w3.org/2006/10/ttaf1',
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'ttaf1_0604': 'http://www.w3.org/2006/04/ttaf1',
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'tts': 'http://www.w3.org/ns/ttml#styling',
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})
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styles = {}
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default_style = {}
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class TTMLPElementParser(object):
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out = ''
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_out = ''
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_unclosed_elements = []
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_applied_styles = []
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def start(self, tag, attrib):
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if tag in (_x('ttml:br'), _x('ttaf1:br'), 'br'):
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self.out += '\n'
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if tag in (_x('ttml:br'), 'br'):
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self._out += '\n'
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else:
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unclosed_elements = []
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style = {}
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element_style_id = attrib.get('style')
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if default_style:
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style.update(default_style)
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if element_style_id:
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style.update(styles.get(element_style_id, {}))
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for prop in SUPPORTED_STYLING:
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prop_val = attrib.get(_x('tts:' + prop))
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if prop_val:
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style[prop] = prop_val
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if style:
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font = ''
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for k, v in sorted(style.items()):
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if self._applied_styles and self._applied_styles[-1].get(k) == v:
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continue
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if k == 'color':
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font += ' color="%s"' % v
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elif k == 'fontSize':
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font += ' size="%s"' % v
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elif k == 'fontFamily':
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font += ' face="%s"' % v
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elif k == 'fontWeight' and v == 'bold':
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self._out += '<b>'
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unclosed_elements.append('b')
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elif k == 'fontStyle' and v == 'italic':
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self._out += '<i>'
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unclosed_elements.append('i')
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elif k == 'textDecoration' and v == 'underline':
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self._out += '<u>'
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unclosed_elements.append('u')
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if font:
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self._out += '<font' + font + '>'
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unclosed_elements.append('font')
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applied_style = {}
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if self._applied_styles:
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applied_style.update(self._applied_styles[-1])
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applied_style.update(style)
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self._applied_styles.append(applied_style)
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self._unclosed_elements.append(unclosed_elements)
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def end(self, tag):
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pass
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if tag not in (_x('ttml:br'), 'br'):
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unclosed_elements = self._unclosed_elements.pop()
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for element in reversed(unclosed_elements):
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self._out += '</%s>' % element
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if unclosed_elements and self._applied_styles:
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self._applied_styles.pop()
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def data(self, data):
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self.out += data
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self._out += data
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def close(self):
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return self.out.strip()
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return self._out.strip()
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def parse_node(node):
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target = TTMLPElementParser()
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@ -2539,13 +2609,45 @@ def parse_node(node):
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parser.feed(xml.etree.ElementTree.tostring(node))
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return parser.close()
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for k, v in LEGACY_NAMESPACES:
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for ns in v:
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dfxp_data = dfxp_data.replace(ns, k)
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dfxp = compat_etree_fromstring(dfxp_data.encode('utf-8'))
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out = []
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paras = dfxp.findall(_x('.//ttml:p')) or dfxp.findall(_x('.//ttaf1:p')) or dfxp.findall(_x('.//ttaf1_0604:p')) or dfxp.findall('.//p')
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paras = dfxp.findall(_x('.//ttml:p')) or dfxp.findall('.//p')
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if not paras:
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raise ValueError('Invalid dfxp/TTML subtitle')
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repeat = False
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while True:
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for style in dfxp.findall(_x('.//ttml:style')):
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style_id = style.get('id')
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parent_style_id = style.get('style')
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if parent_style_id:
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if parent_style_id not in styles:
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repeat = True
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continue
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styles[style_id] = styles[parent_style_id].copy()
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for prop in SUPPORTED_STYLING:
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prop_val = style.get(_x('tts:' + prop))
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if prop_val:
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styles.setdefault(style_id, {})[prop] = prop_val
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if repeat:
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repeat = False
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else:
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break
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for p in ('body', 'div'):
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ele = xpath_element(dfxp, [_x('.//ttml:' + p), './/' + p])
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if ele is None:
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continue
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style = styles.get(ele.get('style'))
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if not style:
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continue
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default_style.update(style)
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for para, index in zip(paras, itertools.count(1)):
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begin_time = parse_dfxp_time_expr(para.attrib.get('begin'))
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end_time = parse_dfxp_time_expr(para.attrib.get('end'))
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