def to_model(scc_content: str):
"""Converts a SCC document to the data model"""
context = _SccContext()
document = ContentDocument()
# Safe area must be a 32x15 grid, that represents 80% of the root area
root_cell_resolution = CellResolutionType(rows=19, columns=40)
document.set_cell_resolution(root_cell_resolution)
context.set_safe_area(int((root_cell_resolution.columns - 32) / 2), int((root_cell_resolution.rows - 15) / 2))
body = Body()
body.set_doc(document)
document.set_body(body)
context.div = Div()
context.div.set_doc(document)
body.push_child(context.div)
time_code = None
for line in scc_content.splitlines():
LOGGER.debug(line)
scc_line = SccLine.from_str(line)
if scc_line is None:
continue
time_code = scc_line.to_model(context)
context.flush(time_code)
return document
def to_model(scc_content: str,
config: Optional[SccReaderConfiguration] = None,
progress_callback=lambda _: None):
"""Converts a SCC document to the data model"""
context = _SccContext(config)
document = ContentDocument()
# Safe area must be a 32x15 grid, that represents 80% of the root area
root_cell_resolution = CellResolutionType(
rows=SCC_ROOT_CELL_RESOLUTION_ROWS,
columns=SCC_ROOT_CELL_RESOLUTION_COLUMNS)
document.set_cell_resolution(root_cell_resolution)
context.set_safe_area(
int((root_cell_resolution.columns -
SCC_SAFE_AREA_CELL_RESOLUTION_COLUMNS) / 2),
int((root_cell_resolution.rows - SCC_SAFE_AREA_CELL_RESOLUTION_ROWS) /
2))
# The active area is equivalent to the safe area
active_area = ActiveAreaType(
left_offset=context.safe_area_x_offset / root_cell_resolution.columns,
top_offset=context.safe_area_y_offset / root_cell_resolution.rows,
width=(root_cell_resolution.columns -
(context.safe_area_x_offset * 2)) /
root_cell_resolution.columns,
height=(root_cell_resolution.rows -
(context.safe_area_y_offset * 2)) / root_cell_resolution.rows,
)
document.set_active_area(active_area)
body = Body()
body.set_doc(document)
document.set_body(body)
# the default value of LineHeight ("normal") typically translates to 125% of the font size, which causes regions to overflow.
body.set_style(StyleProperties.LineHeight,
LengthType(value=100, units=LengthType.Units.pct))
# use a more readable font than the default Courier
body.set_style(StyleProperties.FontFamily,
("Consolas", "Monaco", GenericFontFamilyType.monospace))
# add line padding
body.set_style(StyleProperties.LinePadding,
LengthType(value=0.25, units=LengthType.Units.c))
context.div = Div()
context.div.set_doc(document)
body.push_child(context.div)
lines = scc_content.splitlines()
nb_lines = len(lines)
for (index, line) in enumerate(lines):
LOGGER.debug(line)
scc_line = SccLine.from_str(line)
progress_callback((index + 1) / nb_lines)
if scc_line is None:
continue
context.process_line(scc_line)
context.flush()
return document
def test_srt_writer(self):
doc = ContentDocument()
r1 = Region("r1", doc)
doc.put_region(r1)
r2 = Region("r2", doc)
r2.set_begin(Fraction(2))
r2.set_end(Fraction(4))
doc.put_region(r2)
body = Body(doc)
doc.set_body(body)
div = Div(doc)
body.push_child(div)
p = P(doc)
p.set_region(r1)
p.set_end(Fraction(2))
div.push_child(p)
span = Span(doc)
span.push_child(Text(doc, "Lorem ipsum dolor sit amet,"))
p.push_child(span)
p = P(doc)
p.set_region(r2)
div.push_child(p)
span = Span(doc)
span.push_child(Text(doc, "consectetur adipiscing elit."))
p.push_child(span)
p = P(doc)
p.set_region(r1)
p.set_begin(Fraction(4))
p.set_end(Fraction(6))
div.push_child(p)
span = Span(doc)
span.push_child(
Text(doc, "Pellentesque interdum lacinia sollicitudin."))
p.push_child(span)
expected_srt = """1
00:00:00,000 --> 00:00:02,000
Lorem ipsum dolor sit amet,
2
00:00:02,000 --> 00:00:04,000
consectetur adipiscing elit.
3
00:00:04,000 --> 00:00:06,000
Pellentesque interdum lacinia sollicitudin.
"""
srt_from_model = srt_writer.from_model(doc)
self.assertEqual(expected_srt, srt_from_model)
def test_process_isd(self):
supported_style_properties = SupportedStylePropertiesFilter({
StyleProperties.BackgroundColor: [NamedColors.red.value],
StyleProperties.Extent: []
})
doc = ContentDocument()
r1 = Region("r1", doc)
r1.set_style(StyleProperties.BackgroundColor, NamedColors.red.value)
r1.set_style(StyleProperties.LuminanceGain, 2.0)
doc.put_region(r1)
b = Body(doc)
b.set_begin(Fraction(1))
b.set_end(Fraction(10))
doc.set_body(b)
div1 = Div(doc)
div1.set_region(r1)
b.push_child(div1)
p1 = P(doc)
p1.set_style(StyleProperties.BackgroundColor, NamedColors.white.value)
p1.set_style(StyleProperties.Direction, DirectionType.rtl)
div1.push_child(p1)
span1 = Span(doc)
span1.set_style(StyleProperties.BackgroundColor, NamedColors.red.value)
span1.set_style(StyleProperties.FontStyle, FontStyleType.italic)
span1.set_style(StyleProperties.Direction, DirectionType.ltr)
p1.push_child(span1)
t1 = Text(doc, "hello")
span1.push_child(t1)
significant_times = sorted(ISD.significant_times(doc))
self.assertEqual(3, len(significant_times))
isd = ISD.from_model(doc, significant_times[1])
r1 = isd.get_region("r1")
self.assertEqual(len(Region._applicableStyles), len(r1._styles))
self.assertEqual(NamedColors.red.value,
r1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(2.0, r1.get_style(StyleProperties.LuminanceGain))
body1 = list(r1)[0]
div1 = list(body1)[0]
p1 = list(div1)[0]
span1 = list(p1)[0]
self.assertEqual(len(P._applicableStyles), len(p1._styles))
self.assertEqual(NamedColors.white.value,
p1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(DirectionType.rtl,
p1.get_style(StyleProperties.Direction))
self.assertEqual(len(Span._applicableStyles), len(span1._styles))
self.assertEqual(NamedColors.red.value,
span1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(FontStyleType.italic,
span1.get_style(StyleProperties.FontStyle))
self.assertEqual(DirectionType.ltr,
span1.get_style(StyleProperties.Direction))
supported_style_properties.process(isd)
self.assertEqual(2, len(r1._styles))
self.assertEqual(NamedColors.red.value,
r1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(
ExtentType(height=LengthType(value=0.0, units=LengthType.Units.rh),
width=LengthType(value=0.0, units=LengthType.Units.rw)),
r1.get_style(StyleProperties.Extent))
self.assertEqual(0, len(p1._styles))
self.assertIsNone(p1.get_style(StyleProperties.BackgroundColor))
self.assertIsNone(p1.get_style(StyleProperties.Direction))
self.assertEqual(1, len(span1._styles))
self.assertEqual(NamedColors.red.value,
span1.get_style(StyleProperties.BackgroundColor))
self.assertIsNone(span1.get_style(StyleProperties.FontStyle))
self.assertIsNone(span1.get_style(StyleProperties.Direction))
def test_process_isd(self):
default_style_value_filter = DefaultStylePropertyValuesFilter({
StyleProperties.BackgroundColor:
NamedColors.red.value,
StyleProperties.Direction:
DirectionType.ltr
})
doc = ContentDocument()
r1 = Region("r1", doc)
r1.set_style(StyleProperties.BackgroundColor, NamedColors.red.value)
r1.set_style(StyleProperties.LuminanceGain, 2.0)
doc.put_region(r1)
b = Body(doc)
b.set_begin(Fraction(1))
b.set_end(Fraction(10))
doc.set_body(b)
div1 = Div(doc)
div1.set_region(r1)
b.push_child(div1)
p1 = P(doc)
p1.set_style(StyleProperties.BackgroundColor, NamedColors.white.value)
p1.set_style(StyleProperties.Direction, DirectionType.rtl)
div1.push_child(p1)
span1 = Span(doc)
span1.set_style(StyleProperties.BackgroundColor, NamedColors.red.value)
span1.set_style(StyleProperties.FontStyle, FontStyleType.italic)
span1.set_style(StyleProperties.Direction, DirectionType.ltr)
p1.push_child(span1)
t1 = Text(doc, "hello")
span1.push_child(t1)
significant_times = sorted(ISD.significant_times(doc))
self.assertEqual(3, len(significant_times))
isd = ISD.from_model(doc, significant_times[1])
r1 = isd.get_region("r1")
self.assertEqual(len(Region._applicableStyles), len(r1._styles))
self.assertEqual(NamedColors.red.value,
r1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(2.0, r1.get_style(StyleProperties.LuminanceGain))
body1 = list(r1)[0]
div1 = list(body1)[0]
p1 = list(div1)[0]
span1 = list(p1)[0]
self.assertEqual(len(P._applicableStyles), len(p1._styles))
self.assertEqual(NamedColors.white.value,
p1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(DirectionType.rtl,
p1.get_style(StyleProperties.Direction))
self.assertEqual(len(Span._applicableStyles), len(span1._styles))
self.assertEqual(NamedColors.red.value,
span1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(FontStyleType.italic,
span1.get_style(StyleProperties.FontStyle))
self.assertEqual(DirectionType.ltr,
span1.get_style(StyleProperties.Direction))
default_style_value_filter.process(isd)
self.assertEqual(len(Region._applicableStyles) - 1, len(r1._styles))
self.assertIsNone(r1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(len(P._applicableStyles), len(p1._styles))
self.assertEqual(NamedColors.white.value,
p1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(DirectionType.rtl,
p1.get_style(StyleProperties.Direction))
self.assertEqual(len(Span._applicableStyles) - 1, len(span1._styles))
self.assertIsNone(span1.get_style(StyleProperties.BackgroundColor))
self.assertEqual(FontStyleType.italic,
span1.get_style(StyleProperties.FontStyle))
self.assertEqual(DirectionType.ltr,
span1.get_style(StyleProperties.Direction))