398 lines
10 KiB
Text
398 lines
10 KiB
Text
Automation 4 Subtitle Data format and functions API
|
|
|
|
This file describes the API for retrieving and manipulating subtitle data in
|
|
Automation 4, as well as the data structures generated and accepted by these
|
|
APIs.
|
|
|
|
---
|
|
|
|
Subtitle Line table
|
|
|
|
A Subtitle Line table contains various information about a line in the
|
|
subtitle file being processed. There are several classes of subtitle lines,
|
|
which all have a few fields in common, but otherwise have different fields.
|
|
|
|
|
|
Common keys for all Subtitle Line classes:
|
|
|
|
class (string)
|
|
The class of the Subtitle Line. Must be one of:
|
|
"clear", (empty line)
|
|
"comment", (semicolon-style comment line)
|
|
"head", (section heading)
|
|
"info", (key/value pair in Script Info section)
|
|
"format", (line format definition)
|
|
"style", (style definition line)
|
|
"stylex", (style extension line, tentative AS5 feature)
|
|
"dialogue", (dialogue line or dialogue-style comment line)
|
|
"unknown" (unknown kind of line)
|
|
Lines of the "unknown" class should never appear in well-formed subtitle
|
|
scripts. They will usually be a result of a line being outside the section
|
|
it belongs in.
|
|
|
|
raw (string)
|
|
The raw text of the line.
|
|
You should not change this field directly, since the data in it will never
|
|
be used for generating lines in internal representation. It will, however,
|
|
be updated from the remaining data in the line whenever it is required for
|
|
one thing or another by an internal function.
|
|
|
|
section (string)
|
|
The section this line is placed in. If it is placed before the first section
|
|
heading, this field is nil.
|
|
|
|
|
|
Key defined only for the "comment" class:
|
|
|
|
text (string)
|
|
The text of the comment line, ie. everything after the initial semicolon,
|
|
including any spaces.
|
|
|
|
|
|
Key defined only for the "head" class:
|
|
|
|
No special keys are defined for this class, but the "section" field will be
|
|
the name of the new section started.
|
|
|
|
|
|
Keys defined only for the "info" class:
|
|
|
|
key (string)
|
|
The "key" part of the line, ie. everything before the first colon.
|
|
|
|
value (string)
|
|
The "value" part of the line, ie. everything after the first colon,
|
|
discarding any leading whitespace.
|
|
|
|
|
|
Keys defined only for the "format" class:
|
|
|
|
fields (table)
|
|
An Array Table of strings, each being the name of a field on the line.
|
|
|
|
|
|
Keys defined only for the "style" class:
|
|
|
|
name (string)
|
|
Name of the style.
|
|
|
|
fontname (string)
|
|
Name of the font used.
|
|
|
|
fontsize (string)
|
|
Size of the font used, in pixels.
|
|
|
|
color1 (string)
|
|
color2 (string)
|
|
color3 (string)
|
|
color4 (string)
|
|
The four colors for the style. (Fill, pre-karaoke fill, border, shadow)
|
|
In VB hexadecimal, ie. "&HAABBGGRR&"
|
|
|
|
bold (boolean/number)
|
|
The boldness/weight of the font. This will usually be a boolean, but it
|
|
can be a number, in which case it must be one of 0, 100, 200, ..., 900.
|
|
|
|
italic (boolean)
|
|
underline (boolean)
|
|
strikeout (boolean)
|
|
Other properties of the font.
|
|
|
|
scale_x (number)
|
|
scale_y (number)
|
|
Scaling of the text, in percent.
|
|
|
|
spacing (number)
|
|
Additional spacing between letters. Always integer.
|
|
|
|
angle (number)
|
|
Rotation of the text on the Z axis in degrees.
|
|
|
|
borderstyle (number)
|
|
1 = outline and drop shadow; 3 = opaque box.
|
|
|
|
outline (number)
|
|
Width of the outline.
|
|
|
|
shadow (number)
|
|
Distance between shadow and text.
|
|
|
|
align (number)
|
|
Numpad alignment of the text.
|
|
|
|
margin_l (number)
|
|
margin_r (number)
|
|
margin_t (number)
|
|
margin_b (number)
|
|
Left/right/top/bottom margins of the text in pixels.
|
|
If using a format without support for separate top and bottom margins, the
|
|
margin_t value will be used for vertical margin when converting back to
|
|
textual representation.
|
|
|
|
encoding (number)
|
|
Font encoding used for text. This follows the MS Windows font encoding
|
|
constants.
|
|
|
|
relative_to (number)
|
|
From STS.h: "0: window, 1: video, 2: undefined (~window)"
|
|
|
|
vertical (boolean)
|
|
Whether vertical text semantics is used or not.
|
|
|
|
|
|
Keys defined only for the "stylex" class:
|
|
|
|
Remember that this class is only for the tentative AS5 format.
|
|
|
|
name (string)
|
|
Name of the new style defined.
|
|
|
|
basename (string)
|
|
Name of the style the new style is based on.
|
|
|
|
overrides (string)
|
|
String of override tags defining the new style.
|
|
|
|
|
|
Keys only defined for the "dialogue" class:
|
|
|
|
comment (boolean)
|
|
True if the line is a comment line, otherwise false.
|
|
|
|
layer (number)
|
|
The layer the line is rendered in.
|
|
|
|
start_time (number)
|
|
end_time (number)
|
|
Start/end time of the line in milliseconds.
|
|
|
|
style (string)
|
|
Name of the style assigned to this line.
|
|
|
|
actor (string)
|
|
Name of the actor performing this line.
|
|
|
|
margin_l (number)
|
|
margin_r (number)
|
|
margin_t (number)
|
|
margin_b (number)
|
|
Left/right/top/bottom margins of the text in pixels.
|
|
If any of these are zero, it's considered "not overriding".
|
|
Same comment as for style lines applies.
|
|
|
|
effect (string)
|
|
Effect to apply to the line.
|
|
|
|
userdata (string)
|
|
Authoring-application defined data. (Tentative AS5 field.)
|
|
|
|
text (string)
|
|
The text for this line.
|
|
|
|
---
|
|
|
|
Subtitle File user data object
|
|
|
|
The Subtitle File object is a user data object with some of the metatable
|
|
methods overridden to provide table-like access to the subtitle lines, as
|
|
well as some functions to modify the subtitles.
|
|
|
|
The following operations are supported.
|
|
|
|
n = #subs
|
|
n = subs.n
|
|
Retrieve the number of lines in total.
|
|
The first syntax is preferred.
|
|
|
|
line = subs[i]
|
|
Retrieve line i, assuming 1 <= i <= n.
|
|
|
|
subs[i] = line
|
|
Replace line i with new data.
|
|
|
|
subs[i] = nil
|
|
subs.delete(i[, i2, ...])
|
|
Delete line i, pushing all following lines up an index. (Ie. by repeatedly
|
|
deleting line 1 this way, the file will eventually end up empty.)
|
|
The function syntax for this function can also take multiple line indexes,
|
|
in which case it deletes each of those lines. All indexes are relative to
|
|
the line numbering before the function is called.
|
|
|
|
subs.deleterange(a, b)
|
|
Deletes all lines from index a to index b, both inclusive. If b < a,
|
|
nothing is done.
|
|
|
|
subs[0] = line
|
|
subs.append(line[, line2, ...])
|
|
Append one or more lines to a file.
|
|
|
|
subs[-i] = line
|
|
subs.insert(i, line[, line2, ...])
|
|
Insert one or more lines before index i.
|
|
|
|
Note that the array-style accessors are most likely faster for any case only
|
|
involving one line at a time, while the function syntax versions are probably
|
|
faster if operating on multiple lines at a time.
|
|
|
|
---
|
|
|
|
Parsing tag data
|
|
|
|
This function uses the Aegisub SSA parser to split a string into override
|
|
blocks and text, and give separate access to each tag in override blocks.
|
|
|
|
function aegisub.parse_tag_data(text)
|
|
|
|
@text (string)
|
|
The SSA format string to parse.
|
|
|
|
Returns: A Parsed Tag Data table.
|
|
|
|
---
|
|
|
|
Recreating a line from tag data
|
|
|
|
This function takes a Parsed Tag Data table and creates an SSA string from it.
|
|
|
|
function aegisub.unparse_tag_data(tagdata)
|
|
|
|
@tagdata (table)
|
|
The Parsed Tag Data table to "unparse".
|
|
|
|
Returns: A string, being the "unparsed" data.
|
|
|
|
---
|
|
|
|
Parsing karaoke data
|
|
|
|
Tihs function uses the Aegisub SSA parser to split a string into karaoke
|
|
syllables with additional calculated information added.
|
|
|
|
function aegisub.parse_karaoke_data(text)
|
|
|
|
@text (string)
|
|
The SSA format string to parse.
|
|
|
|
Returns: A Parsed Karaoke Data table.
|
|
|
|
---
|
|
|
|
Parsed Tag Data table
|
|
|
|
The Parsed Tag Data table is an Array Table containing a number of Parsed Line
|
|
Block tables.
|
|
|
|
|
|
Parsed Line Block table
|
|
|
|
A Parsed Line Block describes part of a line. (See ass_dialogue.cpp:70 for a
|
|
more complete description of this.
|
|
There are several classes of Parsed Line Block tables, which have slightly
|
|
varying fields.
|
|
|
|
|
|
Base Parsed Line Block table class
|
|
|
|
class (string)
|
|
One of:
|
|
"plain",
|
|
"override",
|
|
"drawing"
|
|
|
|
|
|
"plain" and "drawing" Parsed Line Block table classes
|
|
|
|
text (string)
|
|
The text contained in this block.
|
|
|
|
|
|
"override" Parsed Line Block table class
|
|
|
|
This class doesn't have any new, specifically named fields. It does, however,
|
|
have multiple integer indexed fields, ie. acts as an Array Table.
|
|
Each of these indexes refer to a table of type Parsed Override Tag.
|
|
|
|
|
|
Parsed Override Tag table
|
|
|
|
This table describes a single override-tag in an SSA line.
|
|
|
|
valid (boolean)
|
|
Whether this tag was parsed as a valid tag, or is just used for representing
|
|
junk in the middle of the line.
|
|
|
|
name (string)
|
|
Name of the tag, including leading backslash character. (In the case of
|
|
invalid tags, the leading backslash might not be present.)
|
|
|
|
paran (boolean)
|
|
Whether this tag has parantheses in its textual representation.
|
|
|
|
params (table)
|
|
This is an Array Table containing the parameters for this tag. It will
|
|
always have the maximum number of entries that can be supported by the tag,
|
|
but in case of omitted parameters, the parameters omitted will have 'false'
|
|
for value in this table.
|
|
|
|
---
|
|
|
|
Parsed Karaoke Data table
|
|
|
|
The Parsed Karaoke Data table is simply an Array Table of Karaoke Syllable
|
|
Data tables. However, the Parsed Karaoke Data table will always have one more
|
|
item than its count shows, which is numbered 0 (zero). This item contains
|
|
everything before the first syllable.
|
|
|
|
|
|
Karaoke Syllable Data table
|
|
|
|
This table contains information about a single karaoke syllable.
|
|
|
|
duration (number)
|
|
Duration of the syllable in milliseconds.
|
|
(In case of syllable zero, this is always zero.)
|
|
|
|
start_time (number)
|
|
end_time (number)
|
|
Start and end times of the syllable, relative to the start of the line,
|
|
given in milliseconds.
|
|
(While these can technically easily be calculated from the duration data,
|
|
they are too convenient to leave out from the standard interface.)
|
|
|
|
tag (string)
|
|
The tag used for marking up this syllable. Usually one of:
|
|
"k", "K", "kf", "ko"
|
|
(In case of syllable zero, this is always the empty string.)
|
|
|
|
text (string)
|
|
The text of the syllable, including all additional override tags.
|
|
|
|
text_stripped (string)
|
|
The text of the syllable, stripped of any override tags.
|
|
|
|
---
|
|
|
|
Setting undo points
|
|
|
|
This function can only be used in macro features, it will have no effect when
|
|
used in any other feature.
|
|
It sets an undo point.
|
|
|
|
You should always call this function after every operation that must be
|
|
undoable as a separate step. It is considered very bad practice to modify
|
|
the subtitles in a macro without setting at least one undo-point, which must
|
|
be at the end.
|
|
|
|
Furthermore, this function also marks the subtitles as "modified". No other
|
|
function does this.
|
|
|
|
function aegisub.set_undo_point(description)
|
|
|
|
@description (string)
|
|
A short description of the operation that will be undone, if this undo-point
|
|
is used. Note that this is currently unused in Aegisub, and this parameter
|
|
is simply ignored.
|
|
|
|
Returns: nothing.
|
|
|
|
---
|