Bug 1686465 [wpt PR 27135] - Implement AudioDecoder.isConfigSupported(), a=testonly

Automatic update from web-platform-tests
Implement AudioDecoder.isConfigSupported()

API and motivations described here:
w3c/webcodecs#98

Spec PR here:
w3c/webcodecs#120

Bug: 1141707
Test: new layout tests
Change-Id: I3a0f3cbc2bb64a86dcefdc454d6b03e72d3f36bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622421
Reviewed-by: Thomas Guilbert <[email protected]>
Commit-Queue: Chrome Cunningham <[email protected]>
Cr-Commit-Position: refs/heads/master@{#842153}

--

wpt-commits: 87bcad098015a7b983d29b13d2e64f33b93fbc85
wpt-pr: 27135

Author: chcunningham

testing/web-platform/tests/webcodecs/audio-decoder.any.js

@@ -15,6 +15,55 @@ function getFakeChunk() {
   });
 }
 
+const invalidConfigs = [
+  {
+    comment: 'Emtpy codec',
+    config: {codec: ''},
+  },
+  {
+    comment: 'Unrecognized codec',
+    config: {codec: 'bogus'},
+  },
+  {
+    comment: 'Video codec',
+    config: {codec: 'vp8'},
+  },
+  {
+    comment: 'Ambiguous codec',
+    config: {codec: 'vp9'},
+  },
+  {
+    comment: 'Codec with MIME type',
+    config: {codec: 'audio/webm; codecs="opus"'},
+  },
+];
+
+invalidConfigs.forEach(entry => {
+  promise_test(t => {
+    return promise_rejects_js(t, TypeError, AudioDecoder.isConfigSupported(entry.config));
+  }, 'Test that AudioDecoder.isConfigSupported() rejects invalid config:' + entry.comment);
+});
+
+
+invalidConfigs.forEach(entry => {
+  async_test(t => {
+    let codec = new AudioDecoder(getDefaultCodecInit(t));
+    assert_throws_js(TypeError, () => { codec.configure(entry.config); });
+    t.done();
+  }, 'Test that AudioDecoder.configure() rejects invalid config:' + entry.comment);
+});
+
+promise_test(t => {
+  return AudioDecoder.isConfigSupported({
+    codec: 'opus',
+    sampleRate: 48000,
+    numberOfChannels: 2,
+    // Opus header extradata.
+    description: new Uint8Array([0x4f, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64,
+        0x01, 0x02, 0x38, 0x01, 0x80, 0xbb, 0x00, 0x00, 0x00, 0x00, 0x00])
+  });
+}, 'Test AudioDecoder.isConfigSupported() with a valid config');
+
 promise_test(t => {
   // AudioDecoderInit lacks required fields.
   assert_throws_js(TypeError, () => { new AudioDecoder({}); });