wavetables

1 files changed, 13 insertions, 1 deletions

diff --git a/src/midi.c b/src/midi.c
index fbea43f..c65a298 100644
--- a/src/midi.c
+++ b/src/midi.c
@@ -92,7 +92,19 @@ void midi_decode(uint32_t msg, synth_t * synth) {
       printf("Channel Pressure: channel=%d, pressure=%d\n", channel, data1);
       break;
     case 0x0E:
-      printf("Pitch Bend: channel=%d, value=%d\n", channel, ((data2 << 7) | data1) - 8192);
+      int val = ((data2 << 7) | data1) - 8192;
+      printf("Pitch Bend: channel=%d, value=%d\n", channel, val);
+      float pitch;
+      float semitones = 2;
+      if (val == 0) {
+        pitch = 1;
+      } else if (val > 0) {
+        pitch = 1 + ((float)val / 8191) * semitones * pow(2.0, 1.0 / 12.0) / 12;
+      } else {
+        pitch = 1 + ((float)val / 8192) * semitones * pow(2.0, 1.0 / 12.0) / 12;
+      }
+      synth->cc_pitch.target = pitch;
+      /* cc_step(synth->cc_pitch, 1); */
       break;
     default:
       printf("Unknown MIDI message\n");