Aegisub/automation/include/karaskel.auto3
Niels Martin Hansen a2c8d7922e Auto3 engine for auto4 seems to work now
Originally committed to SVN as r833.
2007-01-18 08:15:02 +00:00

134 lines
5.8 KiB
Text

--[[
Copyright (c) 2005, Niels Martin Hansen
All rights reserved.
Redistribution and use in source and binary forms, with or without
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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]]
-- Aegisub Automation include file
-- The purpose of this include file is to provide a default skeleton for Automation scripts,
-- where you, as a scripter, can just override the functions you need to override.
-- The following functions can be overridden:
-- do_syllable - called for each syllable in a line
-- do_line_decide - called to decide whether to process a line or not
-- do_line_start - called at the beginning of each line
-- do_line_end - called at the end of each line
-- do_line - Process an entire line
-- By default, these functions are all assigned to the following default functions
-- Your functions should obviously use the same parameter lists etc.
-- Note that if you override do_line, none of the other functions will be called!
-- All the functions mentioned here are, however, wrapped in some code that pre-calculates some
-- extra data for the lines and syllables.
-- The following fields are added to lines:
-- i - The index of the line in the file, 0 being the first
-- width - Rendered width of the line in pixels (using the line style, overrides are not taken into account)
-- height - Rendered height of the line in pixels (note that rotation isn't taken into account either)
-- ascent - Height of the ascenders, in pixels (notice that this looks like the output of text_extents?)
-- extlead - External leading of the font, in pixels (well, it is!)
-- centerleft - Pixel position of the left edge of the line, when horisontally centered on screen
-- centerright - Pixel pisition of the right edge of the line, when horisontally centered on screen
-- duration - Duration of the line in miliseconds
-- styleref - The actual style table for the style this line has
-- The following fields are added to syllables:
-- i - The index of the syllable in the line, 0 being the first (and usually empty) one
-- width, height, ascent, extlead - Same as for lines
-- left - Left pixel position of the syllable, relative to the start of the line
-- center - Center pixel position of the syllable, also relative to the start of the line
-- right - Right pixel position of the syllable, relative again
-- start_time - Start time of the syllable, in miliseconds, relative to the start of the line
-- end_time - End time of the syllable, similar to start_time
include("karaskel-base.auto3")
-- Return a replacement text for a syllable
function karaskel.do_syllable(meta, styles, config, line, syl)
karaskel.trace("default_do_syllable")
return syl.text
end
-- Decide whether or not to process a line
function karaskel.do_line_decide(meta, styles, config, line)
karaskel.trace("default_do_line_decide")
return line.kind == "dialogue"
end
-- Return a text to prefix the line
function karaskel.do_line_start(meta, styles, config, line)
karaskel.trace("default_do_line_start")
return ""
end
-- Return a text to suffix the line
function karaskel.do_line_end(meta, styles, config, line)
karaskel.trace("default_do_line_end")
return ""
end
-- Process an entire line (which has pre-calculated extra data in it already)
-- Return a table of replacement lines
function karaskel.do_line(meta, styles, config, line)
karaskel.trace("default_do_line")
-- Check if the line should be processed at all
if not do_line_decide(meta, styles, config, line) then
return {n=0}
end
karaskel.trace("default_do_line:2")
-- Create a new local var for the line replacement text, set it to line prefix
-- This is to make sure the actual line text isn't replaced before the line has been completely processed
local newtext = do_line_start(meta, styles, config, line)
karaskel.trace("default_do_line:3")
-- Loop over the syllables
for i = 0, line.karaoke.n-1 do
karaskel.trace("default_do_line:4:"..i)
-- Append the replacement for each syllable onto the line
newtext = newtext .. do_syllable(meta, styles, config, line, line.karaoke[i])
end
karaskel.trace("default_do_line:5")
-- Append line suffix
newtext = newtext .. do_line_end(meta, styles, config, line)
karaskel.trace("default_do_line:6")
-- Now replace the line text
line.text = newtext
-- And return a table with one entry
return {n=1; [1]=line}
end
-- Now assign all the default functions to the names that are actually called
do_syllable = karaskel.do_syllable
do_line_decide = karaskel.do_line_decide
do_line_start = karaskel.do_line_start
do_line_end = karaskel.do_line_end
do_line = karaskel.do_line