init commit

remotion/node_modules/@remotion/media-parser/dist/seek-forwards.js

@@ -0,0 +1,38 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.seekForward = void 0;
+const disallow_forward_seek_if_samples_are_needed_1 = require("./disallow-forward-seek-if-samples-are-needed");
+const log_1 = require("./log");
+const seekForward = async ({ seekTo, userInitiated, iterator, fields, logLevel, currentReader, readerInterface, src, controller, discardReadBytes, prefetchCache, }) => {
+    if (userInitiated) {
+        (0, disallow_forward_seek_if_samples_are_needed_1.disallowForwardSeekIfSamplesAreNeeded)({
+            fields,
+            seekTo,
+            previousPosition: iterator.counter.getOffset(),
+        });
+    }
+    const alreadyHasBuffer = iterator.bytesRemaining() >= seekTo - iterator.counter.getOffset();
+    log_1.Log.verbose(logLevel, `Performing seek from ${iterator.counter.getOffset()} to ${seekTo}`);
+    // (a) starting byte has already been fetched
+    if (alreadyHasBuffer) {
+        iterator.skipTo(seekTo);
+        log_1.Log.verbose(logLevel, `Already read ahead enough, skipping forward`);
+        return;
+    }
+    // (b) starting byte has not been fetched yet, making new reader
+    const time = Date.now();
+    log_1.Log.verbose(logLevel, `Skipping over video data from position ${iterator.counter.getOffset()} -> ${seekTo}. Re-reading because this portion is not available`);
+    await currentReader.getCurrent().abort();
+    const { reader: newReader } = await readerInterface.read({
+        src,
+        range: seekTo,
+        controller,
+        logLevel,
+        prefetchCache,
+    });
+    iterator.skipTo(seekTo);
+    await discardReadBytes(true);
+    log_1.Log.verbose(logLevel, `Re-reading took ${Date.now() - time}ms. New position: ${iterator.counter.getOffset()}`);
+    currentReader.setCurrent(newReader);
+};
+exports.seekForward = seekForward;