-- Adjust volume envelope point at mouse cursor via mousewheel
-- Lua script by SPK77 31-Aug-2015
-- 2-Sep-2015: added support for all track envelopes
-------------------
-- User settings --
-------------------
-- Adjustment behavior
local adj_sel_env = false -- true: envelope has to be selected
-- Volume envelope step size
-- (User configurable "dB_steps": see "set_envelope_point" -function)
-- Pan envelope step size
local pan_env_step = 0.01 -- 200 steps (-1 to 1)
-- Width envelope step size
local width_env_step = 0.01 -- 200 steps (-1 to 1)
-- Mute envelope step size
local mute_env_step = 1 -- 2 steps (0 to 1)
----------------------------------------------------------------------
local dB_step = 0.2
local max = math.max
local abs = math.abs
local exp = math.exp
local log = math.log
local dbg = true
function msg(m)
if dbg then
reaper.ShowConsoleMsg(tostring(m) .. "\n")
end
end
-- Justin's functions ----------------------------------------
function VAL2DB(x)
if x < 0.0000000298023223876953125 then
x = -150
else
x = max(-150, log(x)* 8.6858896380650365530225783783321)
end
return x
end
function DB2VAL(x)
return exp(x*0.11512925464970228420089957273422)
end
--------------------------------------------------------------
-- Set new value for an envelope point
function set_envelope_point(env_prop_table, m_wheel_delta)
local e = env_prop_table
local env = e.pointer
--msg(env)
if env == nil then
return
end
local min_val = e.min_val
local max_val = e.max_val
local br_env = reaper.BR_EnvAlloc(env, true)
local pos = reaper.BR_PositionAtMouseCursor(false)
local p_index = reaper.BR_EnvFind(br_env, pos, 10)
local get_point_ret, position, value, shape, selected, bezier = reaper.BR_EnvGetPoint(br_env, p_index)
reaper.BR_EnvFree(br_env, false)
-- Volume envelopes
if e.name == "Volume" or e.name == "Volume (Pre-FX)" then
local dB_val = VAL2DB(abs(value))
-- Change the "dB_step" here
if dB_val < -90 then dB_step = 5 -- < -90 dB
elseif dB_val < -60 then dB_step = 3 -- from -90 to -60 dB
elseif dB_val < -45 then dB_step = 2 -- from -60 to -45 dB
elseif dB_val < -30 then dB_step = 1.5 -- from -45 to -30 dB
elseif dB_val < -18 then dB_step = 1 -- from -30 to -18 dB
elseif dB_val < 24 then dB_step = 0.2 -- from -18 to 24 dB
end
if m_wheel_delta < -1 then
dB_step = -dB_step
end
value = DB2VAL(dB_val + dB_step)
--end
-- Pan envelopes
elseif e.name == "Pan" or e.name == "Pan (Pre-FX)" then
if m_wheel_delta < -1 then
pan_env_step = -pan_env_step
end
value = value + pan_env_step
--end
-- Width envelopes
elseif e.name == "Width" or e.name == "Width (Pre-FX)" then
if m_wheel_delta < -1 then
width_env_step = -width_env_step
end
value = value + width_env_step
--end
-- Mute envelope
elseif e.name == "Mute" then
if m_wheel_delta < -1 then
mute_env_step = -mute_env_step
end
value = value + mute_env_step
end
if value < e.min_val then
value = e.min_val
end
if value > e.max_val then
value = e.max_val
end
if e.is_fader_scaling then
value = reaper.ScaleToEnvelopeMode(1, value)
end
reaper.SetEnvelopePoint(env, p_index, nil, value, nil, nil, nil, true)
reaper.UpdateArrange()
reaper.Undo_OnStateChangeEx("Adjust volume envelope point", -1, -1)
end
-- Returns "envelope properties" table
function get_env_properties(env)
envelope = {}
if env ~= nil then
--local env_name = ({reaper.GetEnvelopeName(env, "")})[2]
local br_env = reaper.BR_EnvAlloc(env, true)
local active, visible, armed, in_lane, lane_height, default_shape,
min_val, max_val, center_val, env_type, is_fader_scaling
= reaper.BR_EnvGetProperties(br_env, false, false, false, false, 0, 0, 0, 0, 0, 0, false)
reaper.BR_EnvFree(br_env, false)
local env_name = ({reaper.GetEnvelopeName(env, "")})[2]
if env_name == "Volume" or env_name == "Volume (Pre-FX)" then
max_val = reaper.SNM_GetIntConfigVar("volenvrange", -1)
if max_val ~= -1 then
if max_val == 1 then
max_val = 1.0
elseif max_val == 0 then
max_val = 2.0
elseif max_val == 4 then
max_val = 4.0
else
max_val = 16.0
end
end
end
--[[
if is_fader_scaling then
max_val = reaper.ScaleToEnvelopeMode(1, max_val)
center_val = reaper.ScaleToEnvelopeMode(1, center_val)
min_val = reaper.ScaleToEnvelopeMode(1, min_val)
end
--]]
-- Store values to "envelope" table
envelope.pointer = env
envelope.active = active
envelope.visible = visible
envelope.armed = armed
envelope.in_lane = in_lane
envelope.lane_height = lane_height
envelope.default_shape = default_shape
envelope.min_val = min_val
envelope.max_val = max_val
envelope.center_val = center_val
envelope.is_fader_scaling = is_fader_scaling
envelope.type = env_type
envelope.name = env_name
envelope.is_tempo = env_type == 9
end
return envelope
end
----------
-- Main --
----------
function main()
local m_wheel_delta = ({reaper.get_action_context()})[7]
if m_wheel_delta == -1 then
return
end
local windowOut, segment, details = reaper.BR_GetMouseCursorContext()
local env
if adj_sel_env then
env = reaper.GetSelectedEnvelope(0)
else
env, is_take_env = reaper.BR_GetMouseCursorContext_Envelope()
end
if env == nil then -- or is_take_env then
return
end
--local env_name = ({reaper.GetEnvelopeName(env, "")})[2]
--if env_name == "Volume" or env_name == "Volume (Pre-FX)" then
env_properties = get_env_properties(env)
set_envelope_point(env_properties, m_wheel_delta)
--end
end
reaper.defer(main)
,