Add mpv visualizer script

1 files changed, 360 insertions, 0 deletions

diff --git a/mpv/scripts/visualizer.lua b/mpv/scripts/visualizer.lua
new file mode 100644
index 0000000..715d6d0
--- /dev/null
+++ b/mpv/scripts/visualizer.lua
@@ -0,0 +1,360 @@
+-- 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 = 8,
+    -- [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
+    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]," ..
+            "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)