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cropmode.lua
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cropmode.lua
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-- This script provides a user interface for making crop filters.
--
-- Shift+C to enter/exit crop mode. Filter will be printed to console on exit.
--
-- Arrow keys, numpad, or hjklyubn to crop. Hold Ctrl to pan instead.
--
-- c to pan to center.
--
-- a/z to double/halve precision, hold Shift to increment/decrement instead.
--
-- Ctrl+a/Ctrl+z to cycle through aspect ratios, Ctrl+s to apply
--
-- All keys may be rebound via script-binding, the names of the keybinds can be
-- found near the bottom of this script. For example, if you wanted to rebind C
-- as F in input.conf:
--
-- F script-binding cropmode
--
-- If you use an hwdec, it will need to be of the copy variety, e.g.,
-- hwdec=auto-copy-safe
--
-- The default step and aspect ratios can be changed via script-opts, see options below.
--
local options = require 'mp.options'
local o = {
step = 64,
ars = {
{ 1, 1 },
{ 16, 9 },
{ 9, 16 },
{ 4, 3 },
{ 2, 3 }
}
}
options.read_options(o)
step,ars = o.step,o.ars
ari = 1
-- keep x/y/w/h in the bounds of the image & initialize them if not already
local function bound()
iw,ih = mp.get_property_native("width", 2),mp.get_property_native("height", 2)
x=math.floor(((not x or x<0) and 0 or x))
y=math.floor(((not y or y<0) and 0 or y))
w=math.floor(((not w or w>iw) and iw or w))
h=math.floor(((not h or h>ih) and ih or h))
w=(w<2 and 2 or w)
h=(h<2 and 2 or h)
x=(x+w>iw and iw-w or x)
y=(y+h>ih and ih-h or y)
end
local function filter() return "crop="..w..":"..h..":"..x..":"..y end
local function jpegtran() return "jpegtran -crop "..w.."x"..h.."+"..x.."+"..y end
local function update() bound(); mp.commandv("vf", "add", "@crop:"..filter()) end
local function addw() w=w+step; x=x-step/2; update() end
local function addh() h=h+step; y=y-step/2; update() end
local function addx() x=x+step; update() end
local function addy() y=y+step; update() end
local function subw() w=w-step; x=x+step/2; update() end
local function subh() h=h-step; y=y+step/2; update() end
local function subx() x=x-step; update() end
local function suby() y=y-step; update() end
local function center() bound(); x=(iw-w)/2; y=(ih-h)/2; update() end
local function addstep() step=step+1; mp.commandv("show-text", "step: "..step) end
local function substep() step=step-1; mp.commandv("show-text", "step: "..step) end
local function dblstep() step=step*2; mp.commandv("show-text", "step: "..step) end
local function hlfstep() step=step/2; mp.commandv("show-text", "step: "..step) end
local function showaspect() mp.commandv("show-text", ars[ari][1]..":"..ars[ari][2]) end
local function incrari() ari=(ari==#ars and 1 or ari+1); showaspect() end
local function decrari() ari=(ari==1 and #ars or ari-1); showaspect() end
local function applyaspect()
local w_ = h/ars[ari][2]*ars[ari][1]
local h_ = w/ars[ari][1]*ars[ari][2]
if w_ <= w then
x = x + (w - w_)/2
w = w_
else
y = y + (h - h_)/2
h = h_
end
showaspect()
update()
end
local function cropmode()
if not mode_on then
mode_on = true
mp.commandv("show-text", "Crop mode enabled")
x,y,w,h = nil; update();
mp.add_forced_key_binding("c", "center", center)
mp.add_forced_key_binding("a", "dblstep", dblstep)
mp.add_forced_key_binding("z", "hlfstep", hlfstep)
mp.add_forced_key_binding("A", "addstep", addstep, { repeatable = true })
mp.add_forced_key_binding("Z", "substep", substep, { repeatable = true })
mp.add_forced_key_binding("Ctrl+a", "incrari", incrari)
mp.add_forced_key_binding("Ctrl+z", "decrari", decrari)
mp.add_forced_key_binding("Ctrl+s", "applyaspect", function() applyaspect() end)
mp.add_forced_key_binding("h", "subwvi", subw)
mp.add_forced_key_binding("j", "addhvi", addh)
mp.add_forced_key_binding("k", "subhvi", subh)
mp.add_forced_key_binding("l", "addwvi", addw)
mp.add_forced_key_binding("y", "subwsubhvi", function() subw(); subh(); end)
mp.add_forced_key_binding("u", "addwsubhvi", function() addw(); subh(); end)
mp.add_forced_key_binding("b", "subwaddhvi", function() subw(); addh(); end)
mp.add_forced_key_binding("n", "addwaddhvi", function() addw(); addh(); end)
mp.add_forced_key_binding("1", "subwaddhnp", function() subw(); addh(); end)
mp.add_forced_key_binding("2", "addhnp", addh)
mp.add_forced_key_binding("3", "addwaddhnp", function() addw(); addh(); end)
mp.add_forced_key_binding("4", "subwnp", subw)
mp.add_forced_key_binding("5", "applyaspectnp", applyaspect)
mp.add_forced_key_binding("6", "addwnp", addw)
mp.add_forced_key_binding("7", "subwsubhnp", function() subw(); subh(); end)
mp.add_forced_key_binding("8", "subhnp", subh)
mp.add_forced_key_binding("9", "addwsubhnp", function() addw(); subh(); end)
mp.add_forced_key_binding("LEFT", "subw", subw)
mp.add_forced_key_binding("DOWN", "addh", addh)
mp.add_forced_key_binding("UP", "subh", subh)
mp.add_forced_key_binding("RIGHT", "addw", addw)
mp.add_forced_key_binding("Ctrl+h", "subxvi", subx)
mp.add_forced_key_binding("Ctrl+j", "addyvi", addy)
mp.add_forced_key_binding("Ctrl+k", "subyvi", suby)
mp.add_forced_key_binding("Ctrl+l", "addxvi", addx)
mp.add_forced_key_binding("Ctrl+y", "subxsubyvi", function() subx(); suby(); end)
mp.add_forced_key_binding("Ctrl+u", "addxsubyvi", function() addx(); suby(); end)
mp.add_forced_key_binding("Ctrl+b", "subxaddyvi", function() subx(); addy(); end)
mp.add_forced_key_binding("Ctrl+n", "addxaddyvi", function() addx(); addy(); end)
mp.add_forced_key_binding("Ctrl+1", "subxaddynp", function() subx(); addy(); end)
mp.add_forced_key_binding("Ctrl+2", "addynp", addy)
mp.add_forced_key_binding("Ctrl+3", "addxaddynp", function() addx(); addy(); end)
mp.add_forced_key_binding("Ctrl+4", "subxnp", subx)
mp.add_forced_key_binding("Ctrl+5", "centernp", center)
mp.add_forced_key_binding("Ctrl+6", "addxnp", addx)
mp.add_forced_key_binding("Ctrl+7", "subxsubynp", function() subx(); suby(); end)
mp.add_forced_key_binding("Ctrl+8", "subynp", suby)
mp.add_forced_key_binding("Ctrl+9", "addxsubynp", function() addx(); suby(); end)
mp.add_forced_key_binding("Ctrl+LEFT", "subx", subx)
mp.add_forced_key_binding("Ctrl+DOWN", "addy", addy)
mp.add_forced_key_binding("Ctrl+UP", "suby", suby)
mp.add_forced_key_binding("Ctrl+RIGHT", "addx", addx)
else
mode_on = false
print(jpegtran()); mp.commandv("show-text", jpegtran());
print(filter()); mp.commandv("show-text", filter());
mp.commandv("vf", "remove", "@crop")
local binds = { "center", "dblstep", "hlfstep", "addstep", "substep", "incrari", "decrari", "applyaspect", "subwvi", "addhvi", "subhvi", "addwvi", "subwsubhvi", "addwsubhvi", "subwaddhvi", "addwaddhvi", "subwaddhnp", "addhnp", "addwaddhnp", "subwnp", "applyaspectnp", "addwnp", "subwsubhnp", "subhnp", "addwsubhnp", "subw", "addh", "subh", "addw", "subxvi", "addyvi", "subyvi", "addxvi", "subxsubyvi", "addxsubyvi", "subxaddyvi", "addxaddyvi", "subxaddynp", "addynp", "addxaddynp", "subxnp", "centernp", "addxnp", "subxsubynp", "subynp", "addxsubynp", "subx", "addy", "suby", "addx" }
for k,v in pairs(binds) do
mp.remove_key_binding(v)
end
end
end
mode_on = false
mp.add_key_binding("C", "cropmode", cropmode)