mpv/TOOLS/lua/command-test.lua

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-- Test script for some command API details.
local utils = require("mp.utils")
function join(sep, arr, count)
local r = ""
if count == nil then
count = #arr
end
for i = 1, count do
if i > 1 then
r = r .. sep
end
r = r .. utils.to_string(arr[i])
end
return r
end
mp.observe_property("vo-configured", "bool", function(_, v)
if v ~= true then
return
end
print("async expand-text")
mp.command_native_async({"expand-text", "hello ${path}!"},
function(res, val, err)
print("done async expand-text: " .. join(" ", {res, val, err}))
end)
-- make screenshot writing very slow
mp.set_property("screenshot-format", "png")
mp.set_property("screenshot-png-compression", "9")
timer = mp.add_periodic_timer(0.1, function() print("I'm alive") end)
timer:resume()
print("Slow screenshot command...")
res, err = mp.command_native({"screenshot"})
print("done, res: " .. utils.to_string(res))
print("Slow screenshot async command...")
res, err = mp.command_native_async({"screenshot"}, function(res)
print("done (async), res: " .. utils.to_string(res))
timer:kill()
end)
print("done (sending), res: " .. utils.to_string(res))
print("Broken screenshot async command...")
mp.command_native_async({"screenshot-to-file", "/nonexistent/bogus.png"},
function(res, val, err)
print("done err scr.: " .. join(" ", {res, val, err}))
end)
mp.command_native_async({name = "subprocess", args = {"sh", "-c", "echo hi && sleep 10s"}, capture_stdout = true},
function(res, val, err)
print("done subprocess: " .. join(" ", {res, val, err}))
end)
local x = mp.command_native_async({name = "subprocess", args = {"sleep", "inf"}},
function(res, val, err)
print("done sleep inf subprocess: " .. join(" ", {res, val, err}))
end)
mp.add_timeout(15, function()
print("aborting sleep inf subprocess after timeout")
mp.abort_async_command(x)
end)
-- (assuming this "freezes")
local y = mp.command_native_async({name = "sub-add", url = "-"},
function(res, val, err)
print("done sub-add stdin: " .. join(" ", {res, val, err}))
end)
mp.add_timeout(20, function()
print("aborting sub-add stdin after timeout")
mp.abort_async_command(y)
end)
mp.command_native_async({name = "subprocess", args = {"wc", "-c"},
stdin_data = "hello", capture_stdout = true},
function(res, val, err)
print("Should be '5': " .. val.stdout)
end)
-- blocking stdin by default
mp.command_native_async({name = "subprocess", args = {"cat"},
capture_stdout = true},
function(res, val, err)
print("Should be 0: " .. #val.stdout)
end)
-- stdin + detached
mp.command_native_async({name = "subprocess",
args = {"bash", "-c", "(sleep 5s ; cat)"},
stdin_data = "this should appear after 5s.\n",
detach = true},
function(res, val, err)
print("5s test: " .. val.status)
end)
-- This should get killed on script exit.
mp.command_native_async({name = "subprocess", playback_only = false,
args = {"sleep", "inf"}}, function()end)
-- Runs detached; should be killed on player exit (forces timeout)
mp.command_native({_flags={"async"}, name = "subprocess",
playback_only = false, args = {"sleep", "inf"}})
end)
function freeze_test(playback_only)
-- This "freezes" the script, should be killed via timeout.
counter = counter and counter + 1 or 0
print("freeze! " .. counter)
local x = mp.command_native({name = "subprocess",
playback_only = playback_only,
args = {"sleep", "inf"}})
print("done, killed=" .. utils.to_string(x.killed_by_us))
end
mp.register_event("shutdown", function()
freeze_test(false)
end)
mp.register_event("idle", function()
freeze_test(true)
end)