Add support for MIDI events in Ableton export pipeline

src/lib/exporters/ableton/builders.ts

@@ -800,6 +800,7 @@ async function buildTrack(
         if (!hasClip && hasSupportedAutomation) {
           sessionClips.push({
             notes: [],
+            midiEvents: [],
             bars: pattern.bars,
             offset: pattern.offset,
             sceneBars: pattern.sceneBars,

src/lib/parsers.ts

@@ -314,11 +314,18 @@ function getPatternsForScene(scenesIntermediate: IntermediateScenes, scenePatter
 
     if (lookupSceneData?.groups[group]) {
       const groupData = lookupSceneData.groups[group];
-      Object.entries(groupData.notes).forEach(([padNum, notes]) => {
+      const sources = new Set(Object.keys(groupData.notes).map(Number));
+      groupData.events.forEach((event) => {
+        if (event.type === 'midi' && event.source >= 0 && event.source < 12) {
+          sources.add(event.source);
+        }
+      });
+
+      [...sources].toSorted((a, b) => a - b).forEach((padNum) => {
         patterns.push({
           pad: `${group}${padNum}` as PadCode,
           group,
-          notes,
+          notes: groupData.notes[padNum] || [],
           bars: groupData.bars,
         });
       });

src/lib/transformers/ableton.ts

@@ -4,6 +4,7 @@ import {
   ExporterParams,
   FaderAutomationEvent,
   FaderParam,
+  MidiPatternEvent,
   Note,
   Pad,
   PadCode,
@@ -44,6 +45,7 @@ export type AblNote = Note;
 
 export type AblClip = {
   notes: AblNote[];
+  midiEvents: AblMidiEvent[];
   bars: number;
   offset: number;
   sceneBars: number;
@@ -54,6 +56,11 @@ export type AblClip = {
   groupPattern?: AblGroupPatternOccurrence;
 };
 
+export type AblMidiEvent = Pick<
+  MidiPatternEvent,
+  'position' | 'source' | 'flags' | 'data' | 'rawData'
+>;
+
 export type AblFaderAutomationPoint = Pick<FaderAutomationEvent, 'position' | 'value' | 'flags'> & {
   parameter: FaderParam;
 };
@@ -166,6 +173,10 @@ function abletonTransformer(data: ProjectRawData, exporterParams: ExporterParams
       }
 
       const faderParams = data.settings.groupFaderParams[pad.group];
+      const source = Number(pattern.pad.slice(1));
+      const midiEvents = (scene.patternEvents[pattern.group]?.events || []).filter(
+        (event): event is MidiPatternEvent => event.type === 'midi' && event.source === source,
+      );
 
       if (!track) {
         const soundId = findSoundIdByPad(pattern.pad, pads) || 0;
@@ -204,6 +215,7 @@ function abletonTransformer(data: ProjectRawData, exporterParams: ExporterParams
       lane.clips.push({
         offset,
         notes: pattern.notes,
+        midiEvents,
         bars: pattern.bars,
         sceneBars,
         sceneIndex,
@@ -324,6 +336,7 @@ function abletonTransformer(data: ProjectRawData, exporterParams: ExporterParams
           if (!newClips[clip.sceneName]) {
             newClips[clip.sceneName] = structuredClone(clip);
             newClips[clip.sceneName].notes = [];
+            newClips[clip.sceneName].midiEvents = [];
           }
 
           newClips[clip.sceneName].notes = [
@@ -333,6 +346,10 @@ function abletonTransformer(data: ProjectRawData, exporterParams: ExporterParams
               note: drumPad,
             })),
           ];
+          newClips[clip.sceneName].midiEvents = [
+            ...newClips[clip.sceneName].midiEvents,
+            ...clip.midiEvents,
+          ];
         });
       });