531 lines
16 KiB
Lua
531 lines
16 KiB
Lua
--[[
|
|
Copyright (c) 2007, Niels Martin Hansen, Rodrigo Braz Monteiro
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation
|
|
and/or other materials provided with the distribution.
|
|
* Neither the name of the Aegisub Group nor the names of its contributors
|
|
may be used to endorse or promote products derived from this software
|
|
without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
]]
|
|
|
|
-- Aegisub Automation 4 Lua karaoke templater tool
|
|
-- Parse and apply a karaoke effect written in ASS karaoke template language
|
|
-- See help file and wiki for more information on this
|
|
|
|
script_name = "Karaoke Templater"
|
|
script_description = "Macro and export filter to apply karaoke effects using the template language"
|
|
script_author = "Niels Martin Hansen"
|
|
script_version = 1
|
|
|
|
|
|
include("karaskel.lua")
|
|
|
|
|
|
-- Find and parse/prepare all karaoke template lines
|
|
function parse_templates(meta, styles, subs)
|
|
local templates = { once = {}, line = {}, syl = {}, char = {}, furi = {}, styles = {} }
|
|
local i = 1
|
|
while i <= #subs do
|
|
aegisub.progress.set((i-1) / #subs * 100)
|
|
local l = subs[i]
|
|
i = i + 1
|
|
if l.class == "dialogue" and l.comment then
|
|
local fx, mods = string.headtail(l.effect)
|
|
fx = fx:lower()
|
|
if fx == "code" then
|
|
parse_code(meta, styles, l, templates, mods)
|
|
elseif fx == "template" then
|
|
parse_template(meta, styles, l, templates, mods)
|
|
end
|
|
templates.styles[l.style] = true
|
|
elseif l.class == "dialogue" and l.effect == "fx" then
|
|
-- this is a previously generated effect line, remove it
|
|
i = i - 1
|
|
subs.delete(i)
|
|
end
|
|
end
|
|
aegisub.progress.set(100)
|
|
return templates
|
|
end
|
|
|
|
function parse_code(meta, styles, line, templates, mods)
|
|
local template = {
|
|
code = line.text,
|
|
loops = 1,
|
|
style = line.style
|
|
}
|
|
local inserted = false
|
|
|
|
local rest = mods
|
|
while rest ~= "" do
|
|
local m, t = string.headtail(rest)
|
|
rest = t
|
|
m = m:lower()
|
|
if m == "once" then
|
|
table.insert(templates.once, template)
|
|
inserted = true
|
|
elseif m == "line" then
|
|
table.insert(templates.line, template)
|
|
inserted = true
|
|
elseif m == "syl" then
|
|
table.insert(templates.syl, template)
|
|
inserted = true
|
|
elseif m == "char" then
|
|
table.insert(templates.char, template)
|
|
inserted = true
|
|
elseif m == "furi" then
|
|
table.insert(templates.furi, template)
|
|
inserted = true
|
|
elseif m == "all" then
|
|
template.style = nil
|
|
elseif m == "repeat" or m == "loop" then
|
|
local times, t = string.headtail(rest)
|
|
template.loops = tonumber(times)
|
|
if not template.loops then
|
|
aegisub.out(3, "Failed reading this repeat-count to a number: %s\nIn template code line: %s\nEffect field: %s\n\n", times, line.text, line.effect)
|
|
template.loops = 1
|
|
else
|
|
rest = t
|
|
end
|
|
else
|
|
aegisub.out(3, "Unknown modifier in code template: %s\nIn template code line: %s\nEffect field: %s\n\n", m, line.text, line.effect)
|
|
end
|
|
end
|
|
|
|
if not inserted then
|
|
table.insert(templates.once, template)
|
|
end
|
|
end
|
|
|
|
template_modifiers = {
|
|
"pre-line", "line", "syl", "char", "furi",
|
|
"all", "repeat", "loop", "notext", "keeptags", "multi", "fx"
|
|
}
|
|
|
|
function parse_template(meta, styles, line, templates, mods)
|
|
local template = {
|
|
t = "",
|
|
pre = "",
|
|
style = line.style,
|
|
loops = 1,
|
|
addtext = true,
|
|
keeptags = false,
|
|
inline_fx = nil,
|
|
multi = false,
|
|
isline = false
|
|
}
|
|
local inserted = false
|
|
|
|
local rest = mods
|
|
while rest ~= "" do
|
|
local m, t = string.headtail(rest)
|
|
rest = t
|
|
m = m:lower()
|
|
if (m == "pre-line" or m == "line") and not inserted then
|
|
-- should really fail if already inserted
|
|
local id, t = string.headtail(rest)
|
|
id = id:lower()
|
|
-- check that it really is an identifier and not a keyword
|
|
for _, kw in pairs(template_modifiers) do
|
|
if id == kw then
|
|
id = nil
|
|
break
|
|
end
|
|
end
|
|
if id then
|
|
rest = t
|
|
end
|
|
-- get old template if there is one
|
|
if id and templates.line[id] then
|
|
template = templates.line[id]
|
|
elseif id then
|
|
template.id = id
|
|
templates.line[id] = template
|
|
else
|
|
table.insert(templates.line, template)
|
|
end
|
|
inserted = true
|
|
template.isline = true
|
|
-- apply text to correct string
|
|
if m == "line" then
|
|
template.t = template.t .. line.text
|
|
else -- must be pre-line
|
|
template.pre = template.pre .. line.text
|
|
end
|
|
elseif m == "syl" and not template.isline then
|
|
table.insert(templates.syl, template)
|
|
inserted = true
|
|
elseif m == "char" and not template.isline then
|
|
table.insert(templates.char, template)
|
|
inserted = true
|
|
elseif m == "furi" and not template.isline then
|
|
aegisub.debug.out(3, "Warning, furi template class used but furigana support isn't implemented yet\n\n")
|
|
table.insert(templates.furi, template)
|
|
inserted = true
|
|
elseif (m == "pre-line" or m == "line") and inserted then
|
|
aegisub.out(2, "Unable to combine %s class templates with other template classes\n\n", m)
|
|
elseif (m == "syl" or m == "char" or m == "furi") and template.isline then
|
|
aegisub.out(2, "Unable to combine %s class template lines with line or pre-line classes\n\n", m)
|
|
elseif m == "all" then
|
|
template.style = nil
|
|
elseif m == "repeat" or m == "loop" then
|
|
local times, t = string.headtail(rest)
|
|
template.loops = tonumber(times)
|
|
if not template.loops then
|
|
aegisub.out(3, "Failed reading this repeat-count to a number: %s\nIn template line: %s\nEffect field: %s\n\n", times, line.text, line.effect)
|
|
template.loops = 1
|
|
else
|
|
rest = t
|
|
end
|
|
elseif m == "notext" then
|
|
template.addtext = false
|
|
elseif m == "keeptags" then
|
|
template.keeptags = true
|
|
elseif m == "multi" then
|
|
template.multi = true
|
|
elseif m == "fx" then
|
|
local fx, t = string.headtail(rest)
|
|
if fx ~= "" then
|
|
template.fx = fx
|
|
rest = t
|
|
else
|
|
aegisub.out(3, "No fx name following fx modifier\nIn template line: %s\nEffect field: %s\n\n", line.text, line.effect)
|
|
template.fx = nil
|
|
end
|
|
else
|
|
aegisub.out(3, "Unknown modifier in template: %s\nIn template line: %s\nEffect field: %s\n\n", m, line.text, line.effect)
|
|
end
|
|
end
|
|
|
|
if not inserted then
|
|
table.insert(templates.syl, template)
|
|
end
|
|
end
|
|
|
|
-- Iterator function, return all templates that apply to the given line
|
|
function matching_templates(templates, line)
|
|
local lastkey = 0
|
|
local function test_next()
|
|
lastkey = lastkey + 1
|
|
local t = templates[lastkey]
|
|
if not t then
|
|
return nil
|
|
elseif t.style == line.style or not t.style then
|
|
return t
|
|
else
|
|
return test_next()
|
|
end
|
|
end
|
|
return test_next
|
|
end
|
|
|
|
|
|
-- Apply the templates
|
|
function apply_templates(meta, styles, subs, templates)
|
|
-- the environment the templates will run in
|
|
local tenv = {
|
|
-- put in some standard libs
|
|
string = string,
|
|
math = math
|
|
}
|
|
|
|
-- run all run-once code snippets
|
|
for k, t in pairs(templates.once) do
|
|
assert(t.code, "WTF, a 'once' template without code?")
|
|
run_template_code(t, tenv)
|
|
end
|
|
|
|
-- start processing lines
|
|
local i, n = 1, #subs
|
|
while i < n do
|
|
local l = subs[i]
|
|
i = i + 1
|
|
if l.class == "dialogue" and ((l.effect == "" and not l.comment) or (l.effect == "karaoke" and l.comment)) then
|
|
-- make a karaoke source line off it
|
|
l.comment = true
|
|
l.effect = "karaoke"
|
|
subs[i] = l
|
|
l.i = i
|
|
-- and then run it through the templates
|
|
apply_line(meta, styles, subs, l, templates, tenv)
|
|
end
|
|
end
|
|
end
|
|
|
|
function apply_line(meta, styles, subs, line, templates, tenv)
|
|
-- Tell whether any templates were applied to this line, needed to know whether the original line should be removed from input
|
|
local applied_templates = false
|
|
|
|
-- General variable replacement context
|
|
local varctx = {
|
|
layer = line.layer,
|
|
lstart = line.start_time,
|
|
lend = line.end_time,
|
|
ldur = line.duration,
|
|
lmid = line.start_time + line.duration/2,
|
|
style = line.style,
|
|
actor = line.actor,
|
|
margin_l = ((line.margin_l > 0) and line.margin_l) or line.styleref.margin_l,
|
|
margin_r = ((line.margin_r > 0) and line.margin_r) or line.styleref.margin_r,
|
|
margin_t = ((line.margin_t > 0) and line.margin_t) or line.styleref.margin_t,
|
|
margin_b = ((line.margin_b > 0) and line.margin_b) or line.styleref.margin_b,
|
|
margin_v = ((line.margin_t > 0) and line.margin_t) or line.styleref.margin_t,
|
|
syln = line.karaoke.n,
|
|
li = line.i,
|
|
lleft = line.left,
|
|
lcenter = line.left + line.width/2,
|
|
lright = line.left + line.width,
|
|
lx = line.x,
|
|
ly = line.y
|
|
-- TODO: more positioning vars
|
|
}
|
|
|
|
-- Specific for whole-line processing
|
|
varctx["start"] = varctx.lstart
|
|
varctx["end"] = varctx.lend
|
|
varctx.dur = varctx.ldur
|
|
varctx.mid = varctx.lmid
|
|
varctx.i = varctx.li
|
|
varctx.left = varctx.lleft
|
|
varctx.center = varctx.lcenter
|
|
varctx.right = varctx.lright
|
|
varctx.x = varctx.lx
|
|
varctx.y = varctx.ly
|
|
|
|
local function set_ctx_syl(syl)
|
|
varctx.sstart = syl.start_time
|
|
varctx.send = syl.end_time
|
|
varctx.sdur = syl.duration
|
|
varctx.smid = syl.start_time + syl.duration / 2
|
|
varctx["start"] = varctx.sstart
|
|
varctx["end"] = varctx.send
|
|
varctx.dur = varctx.sdur
|
|
varctx.mid = varctx.smid
|
|
varctx.si = syl.i
|
|
varctx.i = varctx.si
|
|
varctx.sleft = syl.left
|
|
varctx.scenter = syl.center
|
|
varctx.sright = syl.right
|
|
if line.halign == "left" then
|
|
varctx.sx = varctx.lleft + syl.left
|
|
elseif line.halign == "center" then
|
|
varctx.sx = varctx.lleft + syl.center
|
|
elseif line.halign == "right" then
|
|
varctx.sx = varctx.lleft + syl.right
|
|
end
|
|
varctx.sy = line.y
|
|
varctx.left = varctx.sleft
|
|
varctx.center = varctx.scenter
|
|
varctx.right = varctx.sright
|
|
varctx.x = varctx.sx
|
|
varctx.y = varctx.sy
|
|
end
|
|
|
|
tenv.orgline = line
|
|
tenv.line = nil
|
|
tenv.syl = nil
|
|
tenv.char = nil
|
|
tenv.furi = nil
|
|
|
|
-- Apply all line templates
|
|
for t in matching_templates(templates.line, line) do
|
|
if t.code then
|
|
run_template_code(t, tenv)
|
|
else
|
|
applied_templates = true
|
|
local newline = table.copy(line)
|
|
tenv.line = newline
|
|
newline.text = ""
|
|
if t.pre ~= "" then
|
|
newline.text = newline.text .. run_text_template(t.pre, tenv, varctx)
|
|
end
|
|
if t.t ~= "" then
|
|
for i = 1, line.kara.n do
|
|
local syl = line.kara[i]
|
|
tenv.syl = syl
|
|
set_ctx_syl(syl)
|
|
newline.text = newline.text .. run_text_template(t.t, tenv, varctx)
|
|
if t.addtext then
|
|
if t.keeptags then
|
|
newline.text = newline.text .. syl.text
|
|
else
|
|
newline.text = newline.text .. syl.text_stripped
|
|
end
|
|
end
|
|
end
|
|
else
|
|
-- hmm, no main template for the line... put original text in
|
|
newline.text = newline.text .. line.text
|
|
end
|
|
newline.effect = "fx"
|
|
subs.append(newline)
|
|
end
|
|
end
|
|
|
|
-- Loop over syllables
|
|
for i = 0, line.kara.n do
|
|
local syl = line.kara[i]
|
|
|
|
-- Apply syllable templates
|
|
for t in matching_templates(templates.syl, line) do
|
|
tenv.syl = syl
|
|
set_ctx_syl(syl)
|
|
|
|
if not t.inline_fx or t.inline_fx == syl.inline_fx then
|
|
if t.code then
|
|
run_code_template(t, tenv)
|
|
elseif t.multi then
|
|
for hl = 1, syl.highlights.n do
|
|
local hldata = syl.highlights[hl]
|
|
local hlsyl = table.copy(syl)
|
|
hlsyl.start_time = hldata.start_time
|
|
hlsyl.end_time = hldata.end_time
|
|
hlsyl.duration = hldata.duration
|
|
tenv.basesyl = syl
|
|
tenv.syl = hlsyl
|
|
set_ctx_syl(hlsyl)
|
|
|
|
for j = 1, t.loops do
|
|
tenv.j = j
|
|
local newline = table.copy(line)
|
|
tenv.line = newline
|
|
newline.text = run_text_template(t, tenv, varctx)
|
|
if t.addtext then
|
|
newline.text = newline.text .. syl.text_stripped
|
|
end
|
|
newline.effect = "fx"
|
|
subs.append(newline)
|
|
end
|
|
end
|
|
else
|
|
for j = 1, t.loops do
|
|
tenv.j = j
|
|
local newline = table.copy(line)
|
|
tenv.line = newline
|
|
newline.text = run_text_template(t, tenv, varctx)
|
|
if t.addtext then
|
|
newline.text = newline.text .. syl.text_stripped
|
|
end
|
|
newline.effect = "fx"
|
|
subs.append(newline)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Apply character templates
|
|
-- TODO
|
|
end
|
|
|
|
-- Loop over furigana
|
|
for i = 1, line.furi.n do
|
|
-- TODO
|
|
end
|
|
end
|
|
|
|
function run_code_template(template, tenv)
|
|
local f, err = loadstring(template.code, "template code")
|
|
if not f then
|
|
aegisub.debug.out(2, "Failed to parse Lua code: %s\nCode that failed to parse: %s\n\n", err, template.code)
|
|
else
|
|
setfenv(f, tenv)
|
|
for j = 1, template.loops do
|
|
tenv.j = j
|
|
local res, err = pcall(f)
|
|
if not res then
|
|
aegisub.debug.out(2, "Runtime error in template code: %s\nCode producing error: %s\n\n", err, template.code)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
function run_text_template(template, tenv, varctx)
|
|
local res = template
|
|
|
|
-- Replace the variables in the string (this is probably faster than using a custom function, but doesn't provide error reporting)
|
|
if varctx then
|
|
res = string.gsub(res, "$([%a_]+)", varctx)
|
|
end
|
|
|
|
-- Function for evaluating expressions
|
|
local function expression_evaluator(expression)
|
|
f, err = loadstring(string.format("return (%s)", expression))
|
|
if (err) ~= nil then
|
|
aegisub.debug.out(2, "Error parsing expression: %s\nExpression producing error: %s\nTemplate with expression: %s\n\n", err, expression, template)
|
|
return "!" .. expression .. "!"
|
|
else
|
|
setfenv(f, tenv)
|
|
local res, val = pcall(f)
|
|
if res then
|
|
return val
|
|
else
|
|
aegisub.debug.out(2, "Runtime error in template expression: %s\nExpression producing error: %s\nTemplate with expression: %s\n\n", val, expression, template)
|
|
return "!" .. expression .. "!"
|
|
end
|
|
end
|
|
end
|
|
-- Find and evaluate expressions
|
|
res = string.gsub(res , "!(.-)!", expression_evaluator)
|
|
|
|
return res
|
|
end
|
|
|
|
|
|
-- Main function to do the templating
|
|
function filter_apply_templates(subs, config)
|
|
aegisub.progress.task("Collecting header data...")
|
|
local meta, styles = karaskel.collect_head(subs)
|
|
|
|
aegisub.progress.task("Parsing templates...")
|
|
local templates = parse_templates(meta, styles, subs)
|
|
|
|
aegisub.progress.task("Applying templates...")
|
|
apply_templates(meta, styles, subs, templates)
|
|
end
|
|
|
|
function macro_apply_templates(subs, sel)
|
|
filter_apply_templates(subs, {ismacro=true, sel=sel})
|
|
aegisub.set_undo_point("apply karaoke template")
|
|
end
|
|
|
|
function macro_can_template(subs)
|
|
-- check if this file has templates in it, don't allow running the macro if it hasn't
|
|
local num_dia = 0
|
|
for i = 1, #subs do
|
|
local l = subs[i]
|
|
if l.class == "dialogue" then
|
|
num_dia = num_dia + 1
|
|
-- test if the line is a template
|
|
if (string.headtail(l.effect)):lower() == "template" then
|
|
return true
|
|
end
|
|
-- don't try forever, this has to be fast
|
|
if num_dia > 50 then
|
|
return false
|
|
end
|
|
end
|
|
end
|
|
return false
|
|
end
|
|
|
|
aegisub.register_macro("Apply karaoke template", "Applies karaoke effects from templates", macro_apply_templates, macro_can_template)
|
|
aegisub.register_filter("Karaoke temokate", "Apply karaoke effect templates to the subtitles", 2000, filter_apply_templates)
|