Permalink
600 lines (528 sloc) 15.5 KB
-- Compatibility shim for lua 5.2/5.3
unpack = unpack or table.unpack
-- these are used internally by lua.c
mp.UNKNOWN_TYPE.info = "this value is inserted if the C type is not supported"
mp.UNKNOWN_TYPE.type = "UNKNOWN_TYPE"
mp.ARRAY.info = "native array"
mp.ARRAY.type = "ARRAY"
mp.MAP.info = "native map"
mp.MAP.type = "MAP"
function mp.get_script_name()
return mp.script_name
end
function mp.get_opt(key, def)
local opts = mp.get_property_native("options/script-opts")
local val = opts[key]
if val == nil then
val = def
end
return val
end
function mp.input_define_section(section, contents, flags)
if flags == nil or flags == "" then
flags = "default"
end
mp.commandv("define-section", section, contents, flags)
end
function mp.input_enable_section(section, flags)
if flags == nil then
flags = ""
end
mp.commandv("enable-section", section, flags)
end
function mp.input_disable_section(section)
mp.commandv("disable-section", section)
end
-- For dispatching script-binding. This is sent as:
-- script-message-to $script_name $binding_name $keystate
-- The array is indexed by $binding_name, and has functions like this as value:
-- fn($binding_name, $keystate)
local dispatch_key_bindings = {}
local message_id = 0
local function reserve_binding()
message_id = message_id + 1
return "__keybinding" .. tostring(message_id)
end
local function dispatch_key_binding(name, state)
local fn = dispatch_key_bindings[name]
if fn then
fn(name, state)
end
end
-- "Old", deprecated API
-- each script has its own section, so that they don't conflict
local default_section = "input_dispatch_" .. mp.script_name
-- Set the list of key bindings. These will override the user's bindings, so
-- you should use this sparingly.
-- A call to this function will remove all bindings previously set with this
-- function. For example, set_key_bindings({}) would remove all script defined
-- key bindings.
-- Note: the bindings are not active by default. Use enable_key_bindings().
--
-- list is an array of key bindings, where each entry is an array as follow:
-- {key, callback_press, callback_down, callback_up}
-- key is the key string as used in input.conf, like "ctrl+a"
--
-- callback can be a string too, in which case the following will be added like
-- an input.conf line: key .. " " .. callback
-- (And callback_down is ignored.)
function mp.set_key_bindings(list, section, flags)
local cfg = ""
for i = 1, #list do
local entry = list[i]
local key = entry[1]
local cb = entry[2]
local cb_down = entry[3]
local cb_up = entry[4]
if type(cb) ~= "string" then
local mangle = reserve_binding()
dispatch_key_bindings[mangle] = function(name, state)
local event = state:sub(1, 1)
local is_mouse = state:sub(2, 2) == "m"
local def = (is_mouse and "u") or "d"
if event == "r" then
return
end
if event == "p" and cb then
cb()
elseif event == "d" and cb_down then
cb_down()
elseif event == "u" and cb_up then
cb_up()
elseif event == def and cb then
cb()
end
end
cfg = cfg .. key .. " script-binding " ..
mp.script_name .. "/" .. mangle .. "\n"
else
cfg = cfg .. key .. " " .. cb .. "\n"
end
end
mp.input_define_section(section or default_section, cfg, flags)
end
function mp.enable_key_bindings(section, flags)
mp.input_enable_section(section or default_section, flags)
end
function mp.disable_key_bindings(section)
mp.input_disable_section(section or default_section)
end
function mp.set_mouse_area(x0, y0, x1, y1, section)
mp.input_set_section_mouse_area(section or default_section, x0, y0, x1, y1)
end
-- "Newer" and more convenient API
local key_bindings = {}
local function update_key_bindings()
for i = 1, 2 do
local section, flags
local def = i == 1
if def then
section = "input_" .. mp.script_name
flags = "default"
else
section = "input_forced_" .. mp.script_name
flags = "force"
end
local cfg = ""
for k, v in pairs(key_bindings) do
if v.bind and v.forced ~= def then
cfg = cfg .. v.bind .. "\n"
end
end
mp.input_define_section(section, cfg, flags)
-- TODO: remove the section if the script is stopped
mp.input_enable_section(section, "allow-hide-cursor+allow-vo-dragging")
end
end
local function add_binding(attrs, key, name, fn, rp)
rp = rp or ""
if (type(name) ~= "string") and (not fn) then
fn = name
name = reserve_binding()
end
local repeatable = rp == "repeatable" or rp["repeatable"]
if rp["forced"] then
attrs.forced = true
end
local key_cb, msg_cb
if not fn then
fn = function() end
end
if rp["complex"] then
local key_states = {
["u"] = "up",
["d"] = "down",
["r"] = "repeat",
["p"] = "press",
}
key_cb = function(name, state)
fn({
event = key_states[state:sub(1, 1)] or "unknown",
is_mouse = state:sub(2, 2) == "m"
})
end
msg_cb = function()
fn({event = "press", is_mouse = false})
end
else
key_cb = function(name, state)
-- Emulate the same semantics as input.c uses for most bindings:
-- For keyboard, "down" runs the command, "up" does nothing;
-- for mouse, "down" does nothing, "up" runs the command.
-- Also, key repeat triggers the binding again.
local event = state:sub(1, 1)
local is_mouse = state:sub(2, 2) == "m"
if event == "r" and not repeatable then
return
end
if is_mouse and (event == "u" or event == "p") then
fn()
elseif (not is_mouse) and (event == "d" or event == "r" or event == "p") then
fn()
end
end
msg_cb = fn
end
if key and #key > 0 then
attrs.bind = key .. " script-binding " .. mp.script_name .. "/" .. name
end
attrs.name = name
key_bindings[name] = attrs
update_key_bindings()
dispatch_key_bindings[name] = key_cb
mp.register_script_message(name, msg_cb)
end
function mp.add_key_binding(...)
add_binding({forced=false}, ...)
end
function mp.add_forced_key_binding(...)
add_binding({forced=true}, ...)
end
function mp.remove_key_binding(name)
key_bindings[name] = nil
dispatch_key_bindings[name] = nil
update_key_bindings()
mp.unregister_script_message(name)
end
local timers = {}
local timer_mt = {}
timer_mt.__index = timer_mt
function mp.add_timeout(seconds, cb)
local t = mp.add_periodic_timer(seconds, cb)
t.oneshot = true
return t
end
function mp.add_periodic_timer(seconds, cb)
local t = {
timeout = seconds,
cb = cb,
oneshot = false,
}
setmetatable(t, timer_mt)
t:resume()
return t
end
function timer_mt.stop(t)
if timers[t] then
timers[t] = nil
t.next_deadline = t.next_deadline - mp.get_time()
end
end
function timer_mt.kill(t)
timers[t] = nil
t.next_deadline = nil
end
mp.cancel_timer = timer_mt.kill
function timer_mt.resume(t)
if not timers[t] then
local timeout = t.next_deadline
if timeout == nil then
timeout = t.timeout
end
t.next_deadline = mp.get_time() + timeout
timers[t] = t
end
end
function timer_mt.is_enabled(t)
return timers[t] ~= nil
end
-- Return the timer that expires next.
local function get_next_timer()
local best = nil
for t, _ in pairs(timers) do
if (best == nil) or (t.next_deadline < best.next_deadline) then
best = t
end
end
return best
end
function mp.get_next_timeout()
local timer = get_next_timer()
if not timer then
return
end
local now = mp.get_time()
return timer.next_deadline - now
end
-- Run timers that have met their deadline.
-- Return: next absolute time a timer expires as number, or nil if no timers
local function process_timers()
while true do
local timer = get_next_timer()
if not timer then
return
end
local now = mp.get_time()
local wait = timer.next_deadline - now
if wait > 0 then
return wait
else
if timer.oneshot then
timer:kill()
else
timer.next_deadline = now + timer.timeout
end
timer.cb()
end
end
end
local messages = {}
function mp.register_script_message(name, fn)
messages[name] = fn
end
function mp.unregister_script_message(name)
messages[name] = nil
end
local function message_dispatch(ev)
if #ev.args > 0 then
local handler = messages[ev.args[1]]
if handler then
handler(unpack(ev.args, 2))
end
end
end
local property_id = 0
local properties = {}
function mp.observe_property(name, t, cb)
local id = property_id + 1
property_id = id
properties[id] = cb
mp.raw_observe_property(id, name, t)
end
function mp.unobserve_property(cb)
for prop_id, prop_cb in pairs(properties) do
if cb == prop_cb then
properties[prop_id] = nil
end
end
end
local function property_change(ev)
local prop = properties[ev.id]
if prop then
prop(ev.name, ev.data)
end
end
-- used by default event loop (mp_event_loop()) to decide when to quit
mp.keep_running = true
local event_handlers = {}
function mp.register_event(name, cb)
local list = event_handlers[name]
if not list then
list = {}
event_handlers[name] = list
end
list[#list + 1] = cb
return mp.request_event(name, true)
end
function mp.unregister_event(cb)
for name, sub in pairs(event_handlers) do
local found = false
for i, e in ipairs(sub) do
if e == cb then
found = true
break
end
end
if found then
-- create a new array, just in case this function was called
-- from an event handler
local new = {}
for i = 1, #sub do
if sub[i] ~= cb then
new[#new + 1] = sub[i]
end
end
event_handlers[name] = new
if #new == 0 then
mp.request_event(name, false)
end
end
end
end
-- default handlers
mp.register_event("shutdown", function() mp.keep_running = false end)
mp.register_event("client-message", message_dispatch)
mp.register_event("property-change", property_change)
-- called before the event loop goes back to sleep
local idle_handlers = {}
function mp.register_idle(cb)
idle_handlers[#idle_handlers + 1] = cb
end
function mp.unregister_idle(cb)
local new = {}
for _, handler in ipairs(idle_handlers) do
if handler ~= cb then
new[#new + 1] = handler
end
end
idle_handlers = new
end
-- sent by "script-binding"
mp.register_script_message("key-binding", dispatch_key_binding)
mp.msg = {
log = mp.log,
fatal = function(...) return mp.log("fatal", ...) end,
error = function(...) return mp.log("error", ...) end,
warn = function(...) return mp.log("warn", ...) end,
info = function(...) return mp.log("info", ...) end,
verbose = function(...) return mp.log("v", ...) end,
debug = function(...) return mp.log("debug", ...) end,
trace = function(...) return mp.log("trace", ...) end,
}
_G.print = mp.msg.info
package.loaded["mp"] = mp
package.loaded["mp.msg"] = mp.msg
_G.mp_event_loop = function()
mp.dispatch_events(true)
end
local function call_event_handlers(e)
local handlers = event_handlers[e.event]
if handlers then
for _, handler in ipairs(handlers) do
handler(e)
end
end
end
mp.use_suspend = false
local suspend_warned = false
function mp.dispatch_events(allow_wait)
local more_events = true
if mp.use_suspend then
if not suspend_warned then
mp.msg.error("mp.use_suspend is now ignored.")
suspend_warned = true
end
end
while mp.keep_running do
local wait = 0
if not more_events then
wait = process_timers()
if wait == nil then
for _, handler in ipairs(idle_handlers) do
handler()
end
wait = 1e20 -- infinity for all practical purposes
end
-- Resume playloop - important especially if an error happened while
-- suspended, and the error was handled, but no resume was done.
mp.resume_all()
if allow_wait ~= true then
return
end
end
local e = mp.wait_event(wait)
more_events = false
if e.event ~= "none" then
call_event_handlers(e)
more_events = true
end
end
end
-- additional helpers
function mp.osd_message(text, duration)
if not duration then
duration = "-1"
else
duration = tostring(math.floor(duration * 1000))
end
mp.commandv("show-text", text, duration)
end
local hook_table = {}
mp.register_event("hook", function(ev)
local fn = hook_table[tonumber(ev.id)]
if fn then
fn()
end
mp.raw_hook_continue(ev.hook_id)
end)
function mp.add_hook(name, pri, cb)
local id = #hook_table + 1
hook_table[id] = cb
-- The C API suggests using 0 for a neutral priority, but lua.rst suggests
-- 50 (?), so whatever.
mp.raw_hook_add(id, name, pri - 50)
end
local mp_utils = package.loaded["mp.utils"]
function mp_utils.format_table(t, set)
if not set then
set = { [t] = true }
end
local res = "{"
-- pretty expensive but simple way to distinguish array and map parts of t
local keys = {}
local vals = {}
local arr = 0
for i = 1, #t do
if t[i] == nil then
break
end
keys[i] = i
vals[i] = t[i]
arr = i
end
for k, v in pairs(t) do
if not (type(k) == "number" and k >= 1 and k <= arr and keys[k]) then
keys[#keys + 1] = k
vals[#keys] = v
end
end
for i = 1, #keys do
if #res > 1 then
res = res .. ", "
end
if i > arr then
res = res .. mp_utils.to_string(keys[i], set) .. " = "
end
res = res .. mp_utils.to_string(vals[i], set)
end
res = res .. "}"
return res
end
function mp_utils.to_string(v, set)
if type(v) == "string" then
return "\"" .. v .. "\""
elseif type(v) == "table" then
if set then
if set[v] then
return "[cycle]"
end
set[v] = true
end
return mp_utils.format_table(v, set)
else
return tostring(v)
end
end
function mp_utils.getcwd()
return mp.get_property("working-directory")
end
function mp_utils.format_bytes_humanized(b)
local d = {"Bytes", "KiB", "MiB", "GiB", "TiB", "PiB"}
local i = 1
while b >= 1024 do
b = b / 1024
i = i + 1
end
return string.format("%0.2f %s", b, d[i] and d[i] or "*1024^" .. (i-1))
end
return {}