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//
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//
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// Provide Automatic Gainstaging for e.g. Nebula Audio VST
// 
// by TBProAudio 2016 (www.tb-software.com)

// Usage:
// 0. Place AutoGainStage_src before plugins you want to gainstage and AutoGainStage_cntrl after 
// 1. Setup Drive Reference Level, e.g. -18 for most Nebula custom programs (0dBVU = -18dBfs)
// 2. Set Drive Control to "Analyse" in order to determine necessary gain to reach reference 
//    level and then let the DAW play ...
// 3. Set Drive Control to "Drive" in order to "drive" the following plugins with measured add. gain, 
//    the add. gain will be compensated in the control plugin// Changelog
// see AutoGain Control

desc:AutoGainStage Source JSFX V1.9 (TB Pro Audio)
options:gmem=TBProAudio_AutoGain

import memorymanager.jsfx-inc
import tbproaudio_common.jsfx-inc

slider1:0<0,31,1{0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31}>LinkID

@init
PDCM.PDC_Measure_Init_Src(1);
// EO@init

@slider
linkid=slider1;
// EO@slider

@block
PDCM.PDC_Measure_Block_Src(linkid);
pre_gain_pos  = linkid*(2*samplesblock + 2) + 0;
pos           = linkid*(2*samplesblock + 2) + 2;
// EO@block

@sample
  // Store audio in gmem
  gmem[pos]   = spl0; 
  gmem[pos+1] = spl1;
  pos+=2;

  spl0 *= gmem[pre_gain_pos];
  spl1 *= gmem[pre_gain_pos];

  // Last
  PDCM.PDC_Measure_Process_Src();        
// EO@sample


