From 4eb0a7b7c0606acd5469b93f5275481dff86132a Mon Sep 17 00:00:00 2001
From: Felix Roos <flix91@gmail.com>
Date: Wed, 27 Sep 2023 22:42:35 +0200
Subject: [PATCH] send start with accurate timing

---
 packages/midi/midi.mjs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/midi/midi.mjs b/packages/midi/midi.mjs
index e3ce0b3e..07e6e65c 100644
--- a/packages/midi/midi.mjs
+++ b/packages/midi/midi.mjs
@@ -86,9 +86,8 @@ if (typeof window !== 'undefined') {
     }
     if (e.data === 'strudel-stop') {
       WebMidi.outputs.forEach((output) => output.sendStop());
-    } else if (e.data === 'strudel-start') {
-      WebMidi.outputs.forEach((output) => output.sendStart());
     }
+    // cannot start here, since we have no timing info, see sendStart below
   });
 }
 
@@ -150,6 +149,10 @@ Pattern.prototype.midi = function (output) {
       const scaled = Math.round(ccv * 127);
       device.sendControlChange(ccn, scaled, midichan, { time: timeOffsetString });
     }
+    if (hap.whole.begin + 0 === 0) {
+      // we need to start here because we have the timing info
+      device.sendStart({ time: timeOffsetString });
+    }
     if (['clock', 'midiClock'].includes(midicmd)) {
       device.sendClock({ time: timeOffsetString });
     } else if (['start'].includes(midicmd)) {