First release

node_modules/@videojs/vhs-utils/test/test-helpers.js

@@ -0,0 +1,42 @@
+import {isVideoCodec, isAudioCodec} from '../src/codecs.js';
+
+const codecAliasMap = {
+  mp3: ['mp3', 'mp4a.40.34', 'mp4a.6b'],
+  aac: ['aac', 'mp4a.40.2', 'mp4a.40.5', 'mp4a.40.29']
+};
+
+Object.keys(codecAliasMap).forEach((alias) => {
+  // map aliases as keys so that everything is linked to each other
+  codecAliasMap[alias].forEach((subalias) => {
+    codecAliasMap[subalias] = codecAliasMap[alias];
+  });
+});
+
+export const doesCodecMatch = function(a, b) {
+  if (!a) {
+    return false;
+  }
+  if (codecAliasMap[b]) {
+    return codecAliasMap[a].indexOf(b) !== -1;
+  }
+
+  return a === b;
+};
+
+export const codecsFromFile = function(file) {
+  const codecs = {};
+  const extension = file.split('.').pop();
+  const codecStr = file.replace(`.${extension}`, '');
+
+  codecStr.split(',').forEach((codec) => {
+    if (isVideoCodec(codec)) {
+      codecs.video = codec;
+    } else if (isAudioCodec(codec)) {
+      codecs.audio = codec;
+    } else {
+      throw new Error(`${codec} is not detected as audio or video`);
+    }
+  });
+
+  return codecs;
+};