add services/worker/src/edl/parser.js

services/worker/src/edl/parser.js

@@ -0,0 +1,71 @@
+/**
+ * Parse CMX3600 EDL format
+ * Standard edit line format:
+ * EDIT# REEL TRACK_TYPE TRANS_TYPE SOURCE_IN SOURCE_OUT RECORD_IN RECORD_OUT
+ *
+ * Example:
+ * 001  REEL001  V     C        01:00:00:00 01:00:05:00 01:00:00:00 01:00:05:00
+ */
+export const parseEDL = (edlContent) => {
+  const lines = edlContent
+    .split('\n')
+    .map(line => line.trim())
+    .filter(line => line && !line.startsWith('TITLE:'));
+
+  const edits = [];
+
+  for (const line of lines) {
+    // Skip empty lines and non-edit lines
+    if (!line || line.startsWith('*') || line.startsWith('TITLE')) {
+      continue;
+    }
+
+    const parts = line.split(/\s+/);
+
+    if (parts.length < 8) {
+      continue;
+    }
+
+    const edit = {
+      editNumber: parts[0],
+      reelName: parts[1],
+      trackType: parts[2],
+      transitionType: parts[3],
+      sourceIn: parts[4],
+      sourceOut: parts[5],
+      recordIn: parts[6],
+      recordOut: parts[7],
+    };
+
+    edits.push(edit);
+  }
+
+  return edits;
+};
+
+/**
+ * Convert timecode string (HH:MM:SS:FF) to seconds
+ */
+export const timecodeToSeconds = (timecode) => {
+  const [hours, minutes, seconds, frames] = timecode
+    .split(':')
+    .map(Number);
+
+  // Assuming 30fps (adjust if needed for 24fps or 25fps)
+  const fps = 30;
+  const frameSeconds = frames / fps;
+
+  return hours * 3600 + minutes * 60 + seconds + frameSeconds;
+};
+
+/**
+ * Convert seconds to timecode string (HH:MM:SS:FF)
+ */
+export const secondsToTimecode = (totalSeconds, fps = 30) => {
+  const hours = Math.floor(totalSeconds / 3600);
+  const minutes = Math.floor((totalSeconds % 3600) / 60);
+  const seconds = Math.floor(totalSeconds % 60);
+  const frames = Math.round((totalSeconds % 1) * fps);
+
+  return `${String(hours).padStart(2, '0')}:${String(minutes).padStart(2, '0')}:${String(seconds).padStart(2, '0')}:${String(frames).padStart(2, '0')}`;
+};