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path: root/mpv/scripts/visualizer.lua
blob: 5ab5272521ef6461e49dcb0cdd74527aeab252af (plain)
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-- https://github.com/mfcc64/mpv-scripts

-- 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 = "absurdlyhigh",
    -- verylow
    -- low
    -- medium
    -- high
    -- veryhigh

    height = 9,
    -- [4 .. 12]

    forcewindow = false,
    -- 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
    elseif quality == "absurdlyhigh" then -- Honestly this just looks the same as veryhigh???
        w = 3840
        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 / 3840 / fps) -- This was originally 1920

        return "[aid1] asplit [ao]," ..
            "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]," ..
            "aformat            =" ..
                "sample_rates   = 192000," ..
            "avectorscope       =" ..
                "size           =" .. w .. "x" .. h .. ":" ..
                "r              =" .. fps .. "," ..
            "format             = rgb0 [vo]"


    elseif name == "showspectrum" then
        return "[aid1] asplit [ao]," ..
            "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]," ..
            "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]," ..
            "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)