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Add video/script resolution correct factor to karaskel, updates #1139.

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Originally committed to SVN as r4087.
This commit is contained in:
Niels Martin Hansen 2010-02-05 17:31:18 +00:00
parent 48e321f8ef
commit cb8cafadbd
1 changed files with 23 additions and 4 deletions
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27
aegisub/automation/include/karaskel-auto4.lua
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@ -1,5 +1,5 @@
--[[
Copyright (c) 2007, Niels Martin Hansen, Rodrigo Braz Monteiro
Copyright (c) 2007, 2010, Niels Martin Hansen, Rodrigo Braz Monteiro
All rights reserved.
Redistribution and use in source and binary forms, with or without
@ -37,7 +37,12 @@ end
-- Collect styles and metadata from the subs
function karaskel.collect_head(subs, generate_furigana)
local meta = { res_x = 0, res_y = 0 }
local meta = {
-- X and Y script resolution
res_x = 0, res_y = 0,
-- Aspect ratio correction factor for video/script resolution mismatch
video_x_correct_factor = 1.0
}
local styles = { n = 0 }
local toinsert = {}
local first_style_line = nil
@ -116,6 +121,17 @@ function karaskel.collect_head(subs, generate_furigana)
end
end
local video_x, video_y = aegisub.video_size()
if video_y then
-- Correction factor for TextSub weirdness when render resolution does
-- not match script resolution. Text pixels are considered square in
-- render resolution rather than in script resolution, which is
-- logically inconsistent. Correct for that.
meta.video_x_correct_factor =
(video_y / video_x) / (meta.res_y / meta.res_x)
end
aegisub.debug.out(4, "Karaskel: Video X correction factor = %f\n\n", meta.video_x_correct_factor)
return meta, styles
end
@ -270,14 +286,16 @@ function karaskel.preproc_line_size(meta, styles, line)
-- Calculate whole line sizing
line.width, line.height, line.descent, line.extlead = aegisub.text_extents(line.styleref, line.text_stripped)
line.width = line.width * meta.video_x_correct_factor
-- Calculate syllable sizing
for s = 0, line.kara.n do
local syl = line.kara[s]
syl.style = line.styleref
syl.width, syl.height = aegisub.text_extents(syl.style, syl.text_spacestripped)
syl.prespacewidth = aegisub.text_extents(syl.style, syl.prespace)
syl.postspacewidth = aegisub.text_extents(syl.style, syl.postspace)
syl.width = syl.width * meta.video_x_correct_factor
syl.prespacewidth = aegisub.text_extents(syl.style, syl.prespace) * meta.video_x_correct_factor
syl.postspacewidth = aegisub.text_extents(syl.style, syl.postspace) * meta.video_x_correct_factor
end
-- Calculate furigana sizing
@ -292,6 +310,7 @@ function karaskel.preproc_line_size(meta, styles, line)
local furi = line.furi[f]
furi.style = line.furistyle
furi.width, furi.height = aegisub.text_extents(furi.style, furi.text)
furi.width = furi.width * meta.video_x_correct_factor
furi.prespacewidth = 0
furi.postspacewidth = 0
end