96 lines
3 KiB
Lua
96 lines
3 KiB
Lua
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-- pitchcontrol.lua
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--
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-- Version: 0.2.0
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-- URL: https://github.com/FichteFoll/mpv-scripts
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-- License: ISC
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-- Commands for key bindings:
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--
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-- * script-message-to pitchcontrol increase
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-- Increase pitch by one half-tone. Bound to Alt+R.
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-- * script-message-to pitchcontrol decrease
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-- Increase pitch by one half-tone. Bound to Alt+r.
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-- * script-message-to pitchcontrol toggle
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-- Toggle pitching.
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-- * script-message-to pitchcontrol set_halftone_pitch <number>
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-- Sets pitch to <number> half-tones - positive, negative or 0.
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-- Copyright 2016-2017 FichteFoll
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--
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-- Permission to use, copy, modify, and/or distribute this software for any
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-- purpose with or without fee is hereby granted, provided that the above
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-- copyright notice and this permission notice appear in all copies.
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--
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-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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-- IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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local utils = require 'mp.utils'
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local msg = require('mp.msg')
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local options = require('mp.options')
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local script_name = mp.get_script_name() -- "pitchcontrol"
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local HALFTONE_SCALE = math.pow(2, 1.0/12) -- 1.059463094352953
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local RUBBERBAND_LABEL = string.format("%s-rubberband", script_name)
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local current_pitch = 0
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local active = false
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function set_halftone_pitch(pitch, activate)
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if activate == nil then
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activate = true
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end
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pitch = tonumber(pitch)
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local pitch_scale = math.pow(HALFTONE_SCALE, pitch)
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if active then
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mp.commandv('af-command', RUBBERBAND_LABEL, 'set-pitch', pitch_scale)
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elseif activate then
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mp.command(("af add @%s:rubberband=pitch-scale=%s"):format(RUBBERBAND_LABEL, pitch_scale))
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active = true
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else
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mp.osd_message(("'%s' is inactive"):format(script_name))
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return
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end
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current_pitch = pitch
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-- output new pitch
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msg.debug(("new pitch-scale: %f"):format(pitch_scale))
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mp.osd_message(("Pitch: %+d halftones"):format(pitch))
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end
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function increase_handler()
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set_halftone_pitch(current_pitch + 1, false)
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end
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function decrease_handler()
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set_halftone_pitch(current_pitch - 1, false)
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end
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function toggle_handler()
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if active then
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mp.command(("af del @%s"):format(RUBBERBAND_LABEL))
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mp.osd_message(("'%s' deactivated"):format(script_name))
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active = false
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else
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set_halftone_pitch(current_pitch, true)
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end
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end
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mp.add_key_binding("Alt+p", 'increase', decrease_handler)
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mp.add_key_binding("Alt+P", 'decrease', increase_handler)
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mp.register_script_message('toggle', toggle_handler)
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mp.register_script_message('set_halftone_pitch', set_halftone_pitch)
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