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remotion/node_modules/@remotion/studio/dist/helpers/get-timeline-sequence-hash.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getTimelineSequenceHash = void 0;
+// The goal for this function is to calculate an as unique as possible identifier
+// for a sequence based on it's properties. A sequence can be registered multiple times
+// from main preview and from thumbnails and we use this to deduplicate it.
+// This is why we don't use `id` properties as they will
+// differ as a hash.
+const getTimelineSequenceHash = (sequence, allSequences, hashesUsedInRoot, cache) => {
+    if (cache[sequence.id]) {
+        return cache[sequence.id];
+    }
+    const parent = allSequences.find((a) => a.id === sequence.parent);
+    const baseHash = [
+        parent
+            ? (0, exports.getTimelineSequenceHash)(parent, allSequences, hashesUsedInRoot, cache)
+            : null,
+        sequence.displayName,
+        sequence.duration,
+        sequence.from,
+        sequence.type,
+        sequence.type === 'audio' ? sequence.src : null,
+        sequence.type === 'audio' ? sequence.volume : null,
+        sequence.type === 'video' ? sequence.src : null,
+        sequence.type === 'video' ? sequence.volume : null,
+    ].join('-');
+    const actualHash = baseHash +
+        hashesUsedInRoot[sequence.rootId].filter((h) => h === baseHash).length;
+    hashesUsedInRoot[sequence.rootId].push(baseHash);
+    cache[sequence.id] = actualHash;
+    return actualHash;
+};
+exports.getTimelineSequenceHash = getTimelineSequenceHash;