79 lines
2.5 KiB
HTML
79 lines
2.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>
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audiochannelmerger-input-non-default.html
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</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/webaudio/resources/audit-util.js"></script>
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<script src="/webaudio/resources/audit.js"></script>
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<script src="/webaudio/resources/merger-testing.js"></script>
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</head>
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<body>
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<script id="layout-test-code">
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let audit = Audit.createTaskRunner();
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// Task: Check if an inactive input renders a silent mono channel in the
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// output.
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audit.define('silent-channel', (task, should) => {
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testMergerInput(should, {
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numberOfChannels: 7,
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// Create a mono source buffer filled with '1'.
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testBufferContent: [1],
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// Connect the output of source into the 7th input of merger.
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mergerInputIndex: 6,
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// 7th channel should be '1'.
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expected: [0, 0, 0, 0, 0, 0, 1],
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}).then(() => task.done());
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});
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// Task: Check if a stereo input is being down-mixed to mono channel
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// correctly based on the mixing rule.
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audit.define('stereo-down-mixing', (task, should) => {
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testMergerInput(should, {
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numberOfChannels: 7,
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// Create a stereo buffer filled with '1' and '2' for left and right
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// channels respectively.
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testBufferContent: [1, 2],
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// Connect the output of source into the 7th input of merger.
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mergerInputIndex: 6,
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// The result of summed and down-mixed stereo audio should be 1.5.
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// (= 1 * 0.5 + 2 * 0.5)
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expected: [0, 0, 0, 0, 0, 0, 1.5],
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}).then(() => task.done());
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});
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// Task: Check if 3-channel input gets processed by the 'discrete' mixing
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// rule.
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audit.define('undefined-channel-layout', (task, should) => {
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testMergerInput(should, {
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numberOfChannels: 7,
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// Create a 3-channel buffer filled with '1', '2', and '3'
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// respectively.
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testBufferContent: [1, 2, 3],
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// Connect the output of source into the 7th input of merger.
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mergerInputIndex: 6,
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// The result of summed stereo audio should be 1 because 3-channel is
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// not a canonical layout, so the input channel 2 and 3 should be
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// dropped by 'discrete' mixing rule.
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expected: [0, 0, 0, 0, 0, 0, 1],
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}).then(() => task.done());
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});
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audit.run();
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</script>
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</body>
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</html>
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