69 lines
2.5 KiB
HTML
69 lines
2.5 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset=utf-8>
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<title>Missing scheme information box in protected sample entry</title>
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<link rel="help" href="https://w3c.github.io/encrypted-media/">
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<!-- Web Platform Test Harness scripts -->
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<script src=/resources/testharness.js></script>
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<script src=/resources/testharnessreport.js></script>
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<!-- Content metadata -->
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<script src=/encrypted-media/content/content-metadata.js></script>
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</head>
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<body>
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<div id='log'></div>
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<div id='audio'>
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<audio id="audioelement" width="200px"></video>
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</div>
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</body>
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<script>
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const contentItem = content['mp4-av-multikey'];
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const audio = document.getElementById('audioelement');
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// Test that a non conforming mp4 protected sample entry triggers the append
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// error algorithm.
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// https://w3c.github.io/media-source/#sourcebuffer-segment-parser-loop
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// 2. If the [[input buffer]] contains bytes that violate the SourceBuffer
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// byte stream format specification, then run the append error algorithm and
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// abort this algorithm.
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promise_test(async t => {
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audio.watcher = new EventWatcher(t, audio, ['error']);
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const response = await fetch(contentItem.audio.path);
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assert_true(response.ok, 'response.ok');
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const audioMedia = new Uint8Array(await response.arrayBuffer());
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const source = new MediaSource();
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source.watcher = new EventWatcher(t, source, ['sourceopen']);
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audio.src = URL.createObjectURL(source);
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await source.watcher.wait_for('sourceopen');
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const mediaType = contentItem.audio.type;
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assert_implements_optional(MediaSource.isTypeSupported(mediaType),
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`${mediaType} supported`);
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const buffer = source.addSourceBuffer(mediaType);
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buffer.watcher = new EventWatcher(t, buffer, ['error', 'updateend']);
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// ISO/IEC 14496-12:2015(E)
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// 8.12.1 Protection Scheme Information Box
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// 8.12.1.1 Definition
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// "At least one protection scheme information box must occur in a protected
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// sample entry."
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//
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// Change the 'sinf' box type to 'sin ' so that there is no protection
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// scheme information box in the protected sample entry.
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// 4-byte offset for the `type` field after `size` and 3 bytes to index the
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// last character of the type.
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audioMedia[contentItem.audio.sinfStart + 4 + 3] = ' '.charCodeAt();
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buffer.appendBuffer(audioMedia);
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await Promise.all([
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buffer.watcher.wait_for(['error', 'updateend']),
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audio.watcher.wait_for('error'),
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]);
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}, 'missing-sinf');
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</script>
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</html>
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