Implemented drumtype locking.

MicroDexed.ino

@@ -303,6 +303,11 @@ int perform_release_mod[NUM_DEXED] = { 0 };
 // Allocate the delay lines for chorus
 int16_t delayline[NUM_DEXED][MOD_DELAY_SAMPLE_BUFFER];
 #endif
+#if NUM_DRUMS >1
+static uint8_t drum_counter;
+static uint8_t drum_type[NUM_DRUMS];
+enum {DRUM_NONE, DRUM_BASS, DRUM_SNAREDRUM, DRUM_HIHAT, DRUM_HANDCLAP, DRUM_RIDE, DRUM_CHRASH, DRUM_LOWTOM, DRUM_MIDTOM, DRUM_HIGHTOM};
+#endif
 
 #ifdef ENABLE_LCD_UI
 extern LCDMenuLib2 LCDML;
@@ -709,8 +714,6 @@ void handleNoteOn(byte inChannel, byte inNumber, byte inVelocity)
   }
 
 #if NUM_DRUMS > 0
-  static uint8_t drum_counter;
-
   // Check for Drum
   if (inChannel == DRUM_MIDI_CHANNEL)
   {
@@ -729,50 +732,72 @@ void handleNoteOn(byte inChannel, byte inNumber, byte inVelocity)
     switch (inNumber - 48)
     {
       case 0:
-        Drum[drum_counter % 4]->play("/DRM/BD01.RAW");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_BASS)]->play("/DRM/BD01.RAW");
         break;
       case 1:
-        Drum[drum_counter % 4]->play("/drm/cp02.raw");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_HANDCLAP)]->play("/drm/cp02.raw");
         break;
       case 2:
-        Drum[drum_counter % 4]->play("/drm/sd15.raw");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_SNAREDRUM)]->play("/drm/sd15.raw");
         break;
       case 6:
-        Drum[drum_counter % 4]->play("/drm/hh01.wav");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_HIHAT)]->play("/drm/hh01.wav");
         break;
       case 8:
-        Drum[drum_counter % 4]->play("/drm/hh02.wav");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_HIHAT)]->play("/drm/hh02.wav");
         break;
       case 10:
-        Drum[drum_counter % 4]->play("/drm/oh02.wav");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_HIHAT)]->play("/drm/oh02.wav");
         break;
       case 5:
-        Drum[drum_counter % 4]->play("/drm/lt01.raw");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_LOWTOM)]->play("/drm/lt01.raw");
         break;
       case 7:
-        Drum[drum_counter % 4]->play("/drm/ht01.raw");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_HIGHTOM)]->play("/drm/ht01.raw");
         break;
       case 13:
-        Drum[drum_counter % 4]->play("/drm/rd01.raw");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_RIDE)]->play("/drm/rd01.raw");
         break;
       case 15:
-        Drum[drum_counter % 4]->play("/drm/rd02.raw");
-        drum_counter++;
+        Drum[drum_get_slot(DRUM_RIDE)]->play("/drm/rd02.raw");
         break;
     }
   }
 #endif
 }
 
+#if NUM_DRUMS > 0
+uint8_t drum_get_slot(uint8_t dt)
+{
+  for (uint8_t i = 0; i < NUM_DRUMS; i++)
+  {
+    if (!Drum[i]->isPlaying())
+      drum_type[i] = DRUM_NONE;
+    else
+    {
+      if (drum_type[i] == dt)
+      {
+#ifdef DEBUG
+        Serial.print(F("Stopping Drum "));
+        Serial.print(i);
+        Serial.print(F(" type "));
+        Serial.println(dt);
+#endif
+        Drum[i]->stop();
+        return (i);
+      }
+    }
+  }
+#ifdef DEBUG
+  Serial.print(F("Using next free Drum slot "));
+  Serial.println(drum_counter % 4);
+#endif
+  drum_type[drum_counter % 4] = dt;
+  drum_counter++;
+  return (drum_counter - 1 % 4);
+}
+#endif
+
 void handleNoteOff(byte inChannel, byte inNumber, byte inVelocity)
 {
   for (uint8_t instance_id = 0; instance_id < NUM_DEXED; instance_id++)

effect_auto_pan.cpp

@@ -29,6 +29,33 @@
 // Written by Holger Wirtz
 // 20191205 - initial version
 
+static const audio_block_t zeroblock = {
+  0, 0, 0, {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#if AUDIO_BLOCK_SAMPLES > 16
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+#if AUDIO_BLOCK_SAMPLES > 32
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+#if AUDIO_BLOCK_SAMPLES > 48
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+#if AUDIO_BLOCK_SAMPLES > 64
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+#if AUDIO_BLOCK_SAMPLES > 80
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+#if AUDIO_BLOCK_SAMPLES > 96
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+#if AUDIO_BLOCK_SAMPLES > 112
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+#endif
+  }
+};
+
 void AudioEffectAutoPan::update(void)
 {
   audio_block_t *in;
@@ -37,12 +64,12 @@ void AudioEffectAutoPan::update(void)
 
   in = receiveReadOnly(0);
   if (!in)
-    return;
+    in = (audio_block_t*)&zeroblock;
 
   mod = receiveReadOnly(1);
   if (!mod)
-    return;
-    
+    mod = (audio_block_t*)&zeroblock;
+
   out[0] = allocate();
   out[1] = allocate();
 
@@ -66,10 +93,15 @@ void AudioEffectAutoPan::update(void)
     {
       release(in);
     }
-    if (mod)
+    if (in != (audio_block_t*)&zeroblock)
+    {
+      release(in);
+    }
+    if (mod != (audio_block_t*)&zeroblock)
     {
       release(mod);
     }
+
     for (uint8_t i = 0; i < 2; i++)
     {
       if (out[i])

effect_stereo_mono.cpp

@@ -77,6 +77,7 @@ void AudioEffectStereoMono::update(void)
     transmit(block[0], 0);
     release(block[0]);
   }
+
   if (block[1])
   {
     transmit(block[1], 1);