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visualizer.lua
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-- various audio visualization
local opts = {
mode = "novideo",
-- off disable visualization
-- noalbumart enable visualization when no albumart and no video
-- novideo enable visualization when no video
-- force always enable visualization
name = "showcqt",
-- off
-- showcqt
-- avectorscope
-- showspectrum
-- showcqtbar
-- showwaves
quality = "medium",
-- verylow
-- low
-- medium
-- high
-- veryhigh
height = 6,
-- [4 .. 12]
forcewindow = true,
-- true (yes) always run visualizer regardless of force-window settings
-- false (no) does not run visualizer when force-window is no
}
-- key bindings
-- cycle visualizer
local cycle_key = "c"
if not (mp.get_property("options/lavfi-complex", "") == "") then
return
end
local visualizer_name_list = {
"off",
"showcqt",
"avectorscope",
"showspectrum",
"showcqtbar",
"showwaves",
}
local axis_0 = "image/png;base64," ..
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local axis_1 = "image/png;base64," ..
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local options = require 'mp.options'
local msg = require 'mp.msg'
options.read_options(opts)
opts.height = math.min(12, math.max(4, opts.height))
opts.height = math.floor(opts.height)
if not opts.forcewindow and mp.get_property('force-window') == "no" then
return
end
local function get_visualizer(name, quality, vtrack)
local w, h, fps
if quality == "verylow" then
w = 640
fps = 30
elseif quality == "low" then
w = 960
fps = 30
elseif quality == "medium" then
w = 1280
fps = 60
elseif quality == "high" then
w = 1920
fps = 60
elseif quality == "veryhigh" then
w = 2560
fps = 60
else
msg.log("error", "invalid quality")
return ""
end
h = w * opts.height / 16
if name == "showcqt" then
local count = math.ceil(w * 180 / 1920 / fps)
return "[aid1] asplit [ao]," ..
"afifo, aformat = channel_layouts = stereo," ..
"firequalizer =" ..
"gain = '1.4884e8 * f*f*f / (f*f + 424.36) / (f*f + 1.4884e8) / sqrt(f*f + 25122.25)':" ..
"scale = linlin:" ..
"wfunc = tukey:" ..
"zero_phase = on:" ..
"fft2 = on," ..
"showcqt =" ..
"fps =" .. fps .. ":" ..
"size =" .. w .. "x" .. h .. ":" ..
"count =" .. count .. ":" ..
"csp = bt709:" ..
"bar_g = 2:" ..
"sono_g = 4:" ..
"bar_v = 9:" ..
"sono_v = 17:" ..
"axisfile = data\\\\:'" .. axis_0 .. "':" ..
"font = 'Nimbus Mono L,Courier New,mono|bold':" ..
"fontcolor = 'st(0, (midi(f)-53.5)/12); st(1, 0.5 - 0.5 * cos(PI*ld(0))); r(1-ld(1)) + b(ld(1))':" ..
"tc = 0.33:" ..
"attack = 0.033:" ..
"tlength = 'st(0,0.17); 384*tc / (384 / ld(0) + tc*f /(1-ld(0))) + 384*tc / (tc*f / ld(0) + 384 /(1-ld(0)))'," ..
"format = yuv420p [vo]"
elseif name == "avectorscope" then
return "[aid1] asplit [ao]," ..
"afifo," ..
"aformat =" ..
"sample_rates = 192000," ..
"avectorscope =" ..
"size =" .. w .. "x" .. h .. ":" ..
"r =" .. fps .. "," ..
"format = rgb0 [vo]"
elseif name == "showspectrum" then
return "[aid1] asplit [ao]," ..
"afifo," ..
"showspectrum =" ..
"size =" .. w .. "x" .. h .. ":" ..
"win_func = blackman [vo]"
elseif name == "showcqtbar" then
local axis_h = math.ceil(w * 12 / 1920) * 4
return "[aid1] asplit [ao]," ..
"afifo, aformat = channel_layouts = stereo," ..
"firequalizer =" ..
"gain = '1.4884e8 * f*f*f / (f*f + 424.36) / (f*f + 1.4884e8) / sqrt(f*f + 25122.25)':" ..
"scale = linlin:" ..
"wfunc = tukey:" ..
"zero_phase = on:" ..
"fft2 = on," ..
"showcqt =" ..
"fps =" .. fps .. ":" ..
"size =" .. w .. "x" .. (h + axis_h)/2 .. ":" ..
"count = 1:" ..
"csp = bt709:" ..
"bar_g = 2:" ..
"sono_g = 4:" ..
"bar_v = 9:" ..
"sono_v = 17:" ..
"sono_h = 0:" ..
"axisfile = data\\\\:'" .. axis_1 .. "':" ..
"axis_h =" .. axis_h .. ":" ..
"font = 'Nimbus Mono L,Courier New,mono|bold':" ..
"fontcolor = 'st(0, (midi(f)-53.5)/12); st(1, 0.5 - 0.5 * cos(PI*ld(0))); r(1-ld(1)) + b(ld(1))':" ..
"tc = 0.33:" ..
"attack = 0.033:" ..
"tlength = 'st(0,0.17); 384*tc / (384 / ld(0) + tc*f /(1-ld(0))) + 384*tc / (tc*f / ld(0) + 384 /(1-ld(0)))'," ..
"format = yuv420p," ..
"split [v0]," ..
"crop =" ..
"h =" .. (h - axis_h)/2 .. ":" ..
"y = 0," ..
"vflip [v1];" ..
"[v0][v1] vstack [vo]"
elseif name == "showwaves" then
return "[aid1] asplit [ao]," ..
"afifo," ..
"showwaves =" ..
"size =" .. w .. "x" .. h .. ":" ..
"r =" .. fps .. ":" ..
"mode = p2p," ..
"format = rgb0 [vo]"
elseif name == "off" then
local hasvideo = false
for id, track in ipairs(mp.get_property_native("track-list")) do
if track.type == "video" then
hasvideo = true
break
end
end
if hasvideo then
return "[aid1] asetpts=PTS [ao]; [vid1] setpts=PTS [vo]"
else
return "[aid1] asetpts=PTS [ao];" ..
"color =" ..
"c = Black:" ..
"s =" .. w .. "x" .. h .. "," ..
"format = yuv420p [vo]"
end
end
msg.log("error", "invalid visualizer name")
return ""
end
local function select_visualizer(vtrack)
if opts.mode == "off" then
return ""
elseif opts.mode == "force" then
return get_visualizer(opts.name, opts.quality, vtrack)
elseif opts.mode == "noalbumart" then
if vtrack == nil then
return get_visualizer(opts.name, opts.quality, vtrack)
end
return ""
elseif opts.mode == "novideo" then
if vtrack == nil or vtrack.albumart then
return get_visualizer(opts.name, opts.quality, vtrack)
end
return ""
end
msg.log("error", "invalid mode")
return ""
end
local function visualizer_hook()
local count = mp.get_property_number("track-list/count", -1)
if count <= 0 then
return
end
local atrack = mp.get_property_native("current-tracks/audio")
local vtrack = mp.get_property_native("current-tracks/video")
--no tracks selected (yet)
if atrack == nil and vtrack == nil then
for id, track in ipairs(mp.get_property_native("track-list")) do
if track.type == "video" and (vtrack == nil or vtrack.albumart == true) and mp.get_property("vid") ~= "no" then
vtrack = track
elseif track.type == "audio" then
atrack = track
end
end
end
local lavfi = select_visualizer(vtrack)
--prevent endless loop
if lavfi ~= mp.get_property("options/lavfi-complex", "") then
mp.set_property("options/lavfi-complex", lavfi)
end
end
mp.add_hook("on_preloaded", 50, visualizer_hook)
mp.observe_property("current-tracks/audio", "native", visualizer_hook)
mp.observe_property("current-tracks/video", "native", visualizer_hook)
local function cycle_visualizer()
local i, index = 1
for i = 1, #visualizer_name_list do
if (visualizer_name_list[i] == opts.name) then
index = i + 1
if index > #visualizer_name_list then
index = 1
end
break
end
end
opts.name = visualizer_name_list[index]
visualizer_hook()
end
mp.add_key_binding(cycle_key, "cycle-visualizer", cycle_visualizer)