mirror of
https://github.com/mpv-player/mpv
synced 2024-12-23 15:22:09 +00:00
100 lines
2.7 KiB
Lua
100 lines
2.7 KiB
Lua
-- This script enables live control of the dynamic range compression
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-- (drc) audio filter while the video is playing back. This can be
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-- useful to avoid having to stop and restart mpv to adjust filter
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-- parameters. See the entry for "drc" under the "AUDIO FILTERS"
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-- section of the man page for a complete description of the filter.
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--
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-- This script registers the key-binding "\" to toggle the filter between
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--
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-- * off
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-- * method=1 (single-sample smoothing)
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-- * method=2 (multi-sample smoothing)
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--
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-- It registers the keybindings ctrl+9/ctrl+0 to decrease/increase the
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-- target ampltiude. These keys will insert the filter at the default
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-- target amplitude of 0.25 if it was not previously present.
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--
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-- OSD feedback of the current filter state is displayed on pressing
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-- each bound key.
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script_name = mp.get_script_name()
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function print_state(params)
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if params then
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mp.osd_message(script_name..":\n"
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.."method = "..params["method"].."\n"
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.."target = "..params["target"])
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else
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mp.osd_message(script_name..":\noff")
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end
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end
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function get_index_of_drc(afs)
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for i,af in pairs(afs) do
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if af["label"] == script_name then
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return i
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end
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end
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end
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function append_drc(afs)
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afs[#afs+1] = {
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name = "drc",
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label = script_name,
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params = {
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method = "1",
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target = "0.25"
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}
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}
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print_state(afs[#afs]["params"])
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end
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function modify_or_create_af(fun)
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afs = mp.get_property_native("af")
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i = get_index_of_drc(afs)
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if not i then
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append_drc(afs)
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else
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fun(afs, i)
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end
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mp.set_property_native("af", afs)
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end
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function drc_toggle_method_handler()
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modify_or_create_af(
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function (afs, i)
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new_method=(afs[i]["params"]["method"]+1)%3
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if new_method == 0 then
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table.remove(afs, i)
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print_state(nil)
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else
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afs[i]["params"]["method"] = tostring((afs[i]["params"]["method"])%2+1)
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print_state(afs[i]["params"])
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end
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end
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)
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end
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function drc_scale_target(factor)
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modify_or_create_af(
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function (afs)
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afs[i]["params"]["target"] = tostring(afs[i]["params"]["target"]*factor)
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print_state(afs[i]["params"])
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end
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)
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end
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function drc_louder_handler()
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drc_scale_target(2.0)
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end
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function drc_quieter_handler()
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drc_scale_target(0.5)
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end
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-- toggle between off, method 1 and method 2
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mp.add_key_binding("\\", "drc_toggle_method", drc_toggle_method_handler)
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-- increase or decrease target volume
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mp.add_key_binding("ctrl+9", "drc_quieter", drc_quieter_handler)
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mp.add_key_binding("ctrl+0", "drc_louder", drc_louder_handler)
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