/* Scales the volume of all incoming midi messages parameter a.
 * If a is 0.5 the Volume is not changed.
 * a = 1.0 scales the volume by 2
 */



import org.jvaptools.scripteffect.*;

org.jvaptools.VstPluginImpl plugin;

public void init(org.jvaptools.VstPluginImpl owner) {
  this.plugin=owner; 
  // Set Volume to 1
  scale=1.0f;
}

public void close() {}

float scale;

public void onMidiEvent(javax.sound.midi.MidiMessage message, long timeStamp) {
  // If message of type ShortMessage
  if(message instanceof javax.sound.midi.ShortMessage ){
      javax.sound.midi.ShortMessage sm=(javax.sound.midi.ShortMessage)message;
      int command=sm.getCommand();
      int velocity=sm.getData2();
      // Test if message is a Note on 
      if((command==javax.sound.midi.ShortMessage.NOTE_ON)&&(velocity!=0)) {
           try{
              // Set a new message volume
              velocity=(int)(velocity*scale*2);
              if(velocity>127) velocity=127;
              sm.setMessage(command,sm.getChannel(),sm.getData1(),velocity);
           } catch(javax.sound.midi.InvalidMidiDataException e){}
      }
      plugin.send(sm,timeStamp);
  }
}

public void processReplacing(vstmain plugin,float a,float b,float c,float d,float[][] inputs, float[][] outputs, int sampleFrames)
{ 
// Save parameter a as midi message volume
scale=a;
float[] out1 = outputs[0];
float[] out2 = outputs[1];
float[] in1 = inputs[0];
float[] in2 = inputs[1];
for (int i = 0; i < sampleFrames; i++) {
out1[i] = in1[i];
out2[i] = in2[i];
} }