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local opts = {
command_on_first_image_loaded="",
command_on_image_loaded="",
command_on_non_image_loaded="",
}
(require 'mp.options').read_options(opts)
if opts.command_on_first_image_loaded == ""
and opts.command_on_image_loaded == ""
and opts.command_on_non_image_loaded == ""
then
return
end
local msg = require 'mp.msg'
local was_image = false
local frame_count = nil
local audio_tracks = nil
local out_params_ready = nil
local path = nil
function run_maybe(str)
if str ~= "" then
mp.command(str)
end
end
function set_image(is_image)
if is_image and not was_image then
msg.verbose("First image detected")
run_maybe(opts.command_on_first_image_loaded)
end
if is_image then
msg.verbose("Image detected")
run_maybe(opts.command_on_image_loaded)
end
if not is_image and was_image then
msg.verbose("Non-image detected")
run_maybe(opts.command_on_non_image_loaded)
end
was_image = is_image
end
function state_changed()
-- only do things when state is consistent
if path ~= nil and audio_tracks ~= nil then
if frame_count == nil and audio_tracks > 0 then
set_image(false)
elseif out_params_ready and frame_count ~= nil then
-- png have 0 frames, jpg 1 ¯\_(ツ)_/¯
set_image((frame_count == 0 or frame_count == 1) and audio_tracks == 0)
end
end
end
mp.observe_property("dwidth", "number", function(_, val)
out_params_ready = (val ~= nil and val > 0)
state_changed()
end)
mp.observe_property("estimated-frame-count", "number", function(_, val)
frame_count = val
state_changed()
end)
mp.observe_property("path", "string", function(_, val)
if not val or val == "" then
path = nil
else
path = val
end
state_changed()
end)
mp.register_event("tracks-changed", function()
audio_tracks = 0
local tracks = 0
for _, track in ipairs(mp.get_property_native("track-list")) do
tracks = tracks + 1
if track.type == "audio" then
audio_tracks = audio_tracks + 1
end
end
if tracks == 0 then
audio_tracks = nil
end
state_changed()
end)
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