From 73916df9417b21c0e19717d581bcbfcc0f08ffd6 Mon Sep 17 00:00:00 2001
From: amagalma <amagalma@gmail.com>
Date: Wed, 3 Jul 2024 12:38:34 +0300
Subject: [PATCH] Release Paste video processor parameter values to focused
 video FX or to all selected items v1.00 (#1414)

---
 ...used video FX or to all selected items.lua | 178 ++++++++++++++++++
 1 file changed, 178 insertions(+)
 create mode 100644 Video/amagalma_Paste video processor parameter values to focused video FX or to all selected items.lua

diff --git a/Video/amagalma_Paste video processor parameter values to focused video FX or to all selected items.lua b/Video/amagalma_Paste video processor parameter values to focused video FX or to all selected items.lua
new file mode 100644
index 000000000..0665d2c02
--- /dev/null
+++ b/Video/amagalma_Paste video processor parameter values to focused video FX or to all selected items.lua	
@@ -0,0 +1,178 @@
+-- @description Paste video processor parameter values to focused video FX or to all selected items
+-- @author amagalma
+-- @version 1.00
+-- @donation https://www.paypal.me/amagalma
+
+
+local ext_state = reaper.GetExtState( "amagalma_copyVideoParameterValues", "values" )
+if ext_state == "" then
+  reaper.MB( "You haven't copied any video processor parameter values.", "Nothing done!", 0 )
+  return
+end
+
+local saved, saved_cnt = {}, 0
+for entry in ext_state:gmatch("[^|]+") do
+  local name, value = entry:match("([^:]+):([^:]+)")
+  saved_cnt = saved_cnt + 1
+  saved[saved_cnt] = { name = name, val = tonumber(value) }
+end
+
+--------
+
+local x, y = reaper.GetMousePosition()
+local retval, trackidx, itemidx, takeidx, fxidx, parm = reaper.GetTouchedOrFocusedFX( 1 )
+
+if retval then -- work with focused fx_chain
+  local track = reaper.GetTrack( 0, trackidx )
+  if takeidx == -1 then -- track FX
+
+    local _, fx_ident = reaper.TrackFX_GetNamedConfigParm( track, fxidx, "fx_ident" )
+    if fx_ident ~= "__builtin_video_processor" then
+      reaper.MB("The focused FX is not a video processor.", "Nothing done", 0)
+      return
+    else
+      local num_param = reaper.TrackFX_GetNumParams( track, fxidx )-3
+      if num_param ~= saved_cnt then
+        reaper.MB("The focused video FX has a different number of\nparameters than the one that was copied.", "Nothing done", 0)
+        return
+      else
+        for p = 1, num_param do
+          local _, param_name = reaper.TrackFX_GetParamName( track, fxidx, p-1 )
+          if param_name ~= saved[p].name then
+            reaper.MB("The focused video FX has a different named parameters\nthan the one that was copied.", "Nothing done", 0)
+            return
+          end
+          reaper.Undo_BeginBlock()
+          reaper.PreventUIRefresh( 1 )
+          for p = 0, num_param-1 do
+            reaper.TrackFX_SetParam( track, fxidx, p, saved[p+1].val )
+          end
+          reaper.PreventUIRefresh( -1 )
+          reaper.Undo_EndBlock( "Changed video parameter values", 2 )
+          reaper.TrackCtl_SetToolTip( "Pasted values to focused track FX", x, y, true )
+          return
+        end
+      end
+    end
+  else -- ItemFX
+    local item = reaper.GetTrackMediaItem( track, itemidx )
+    local take = reaper.GetTake( item, takeidx )
+    local _, fx_ident = reaper.TakeFX_GetNamedConfigParm( take, fxidx, "fx_ident" )
+    if fx_ident ~= "__builtin_video_processor" then
+      reaper.MB("The focused FX is not a video processor.", "Nothing done", 0)
+      return
+    else
+      local num_param = reaper.TakeFX_GetNumParams( take, fxidx )-3
+      if num_param ~= saved_cnt then
+        reaper.MB("The focused video FX has a different number of\nparameters than the one that was copied.", "Nothing done", 0)
+        return
+      else
+        for p = 1, num_param do
+          local _, param_name = reaper.TakeFX_GetParamName( take, fxidx, p-1 )
+          if param_name ~= saved[p].name then
+            reaper.MB("The focused video FX has a different named parameters\nthan the one that was copied.", "Nothing done", 0)
+            return
+          end
+          reaper.PreventUIRefresh( 1 )
+          for p = 0, num_param-1 do
+            reaper.TakeFX_SetParam( take, fxidx, p, saved[p+1].val )
+          end
+          reaper.PreventUIRefresh( -1 )
+          reaper.Undo_OnStateChange_Item( 0, "Changed video parameter values", item )
+          reaper.TrackCtl_SetToolTip( "Pasted values to focused take FX", x, y, true )
+          return
+        end
+      end
+    end
+  end
+else -- work with selected items
+  local item_cnt = reaper.CountSelectedMediaItems( 0 )
+  if item_cnt == 0  then
+    reaper.MB("No items selected!", "Nothing done", 0)
+    return
+  end
+  local to_process, to_process_cnt = {}, 0
+  for i = 0, item_cnt-1 do
+    local item = reaper.GetSelectedMediaItem( 0, i )
+    local take = reaper.GetActiveTake( item )
+    if take then
+      for fx = 0, reaper.TakeFX_GetCount( take )-1 do
+        local _, fx_ident = reaper.TakeFX_GetNamedConfigParm( take, fx, "fx_ident" )
+        if fx_ident == "__builtin_video_processor" then
+          local num_param = reaper.TakeFX_GetNumParams( take, fx )-3
+          local same_parm_names = true
+          if num_param == saved_cnt then
+            for p = 1, num_param do
+              local _, param_name = reaper.TakeFX_GetParamName( take, fx, p-1 )
+              if param_name ~= saved[p].name then
+                same_parm_names = false
+                break
+              end
+            end
+          else
+            same_parm_names = false
+          end
+          if same_parm_names then
+            to_process_cnt = to_process_cnt + 1
+            to_process[to_process_cnt] = { take = take, fxid = fx }
+          end
+        end
+      end
+      -- check if dedicated processor
+      local source = reaper.GetMediaItemTake_Source( take )
+      local source_type = reaper.GetMediaSourceType( source )
+      if source_type == "VIDEOEFFECT" then
+        local parameters, last_param = {}
+        local _, chunk = reaper.GetItemStateChunk( item, "", false )
+        local start_noting = false
+        local same_parm_names = true
+        for line in chunk:gmatch("[^\n\r]+") do
+          if line == "<SOURCE VIDEOEFFECT\n" then
+            start_noting = true
+          end
+          if start_noting then
+            param, param_name = line:match("|//@param(%d+):[^']+'([^']+)")
+            reaper.ShowConsoleMsg(param_name .. "\n")
+            if param and param_name then
+              last_param = tonumber(param)
+              if param_name ~= saved[param].name then
+                same_parm_names = false
+                break
+              end
+            elseif line:match("CODEPARM ") then
+              start_noting = false
+              break
+            end
+          end
+        end
+        if same_parm_names then
+          to_process_cnt = to_process_cnt + 1
+          to_process[to_process_cnt] = { take = item, fxid = chunk } -- .take contains item, fxid contains chunk!
+        end
+      end
+    end
+  end
+  if to_process_cnt == 0 then
+    reaper.MB("No suitable video processor FX on the selected items!", "Nothing done", 0)
+    return
+  else
+    reaper.PreventUIRefresh( 1 )
+    for i = 1, to_process_cnt do
+      if tonumber(to_process[i].fxid) then
+        for p = 0, saved_cnt-1 do
+          reaper.TakeFX_SetParam( to_process[i].take, to_process[i].fxid, p, saved[p+1].val )
+        end
+      else -- work with chunk
+        local codeparm = "CODEPARM"
+        for i = 1, saved_cnt do
+          codeparm = codeparm .. " " .. tostring(saved[i].val)
+        end
+        local chunk = to_process[i].fxid:gsub("CODEPARM[^n]-", codeparm, 1)
+        reaper.SetItemStateChunk( to_process[i].take, chunk, false )
+      end
+    end
+    reaper.PreventUIRefresh( -1 )
+    reaper.Undo_OnStateChange( "Changed video parameter values" )
+    reaper.TrackCtl_SetToolTip( "Pasted values to " .. tostring(to_process_cnt) .. " FX instances", x, y, true )
+  end
+end