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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/webaudio/the-audio-api/the-channelmergernode-interface/audiochannelmerger-input.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-channelmergernode-interface/audiochannelmerger-input.html')
| -rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-channelmergernode-interface/audiochannelmerger-input.html | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-channelmergernode-interface/audiochannelmerger-input.html b/testing/web-platform/tests/webaudio/the-audio-api/the-channelmergernode-interface/audiochannelmerger-input.html new file mode 100644 index 0000000000..66a70dcb3b --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-channelmergernode-interface/audiochannelmerger-input.html @@ -0,0 +1,113 @@ +<!DOCTYPE html> +<html> + <head> + <title> + audiochannelmerger-input.html + </title> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + <script src="/webaudio/resources/audit-util.js"></script> + <script src="/webaudio/resources/audit.js"></script> + <script src="/webaudio/resources/merger-testing.js"></script> + </head> + <body> + <script id="layout-test-code"> + let audit = Audit.createTaskRunner(); + + // Task: Check if an inactive input renders a silent mono channel in the + // output. + audit.define('silent-channel', (task, should) => { + testMergerInput(should, { + numberOfChannels: 6, + + // Create a mono source buffer filled with '1'. + testBufferContent: [1], + + // Connect the output of source into the 4th input of merger. + mergerInputIndex: 3, + + // All channels should contain 0, except channel 4 which should be 1. + expected: [0, 0, 0, 1, 0, 0], + }).then(() => task.done()); + }); + + + // Task: Check if a stereo input is being down-mixed to mono channel + // correctly based on the mixing rule. + audit.define('stereo-down-mixing', (task, should) => { + testMergerInput(should, { + numberOfChannels: 6, + + // Create a stereo buffer filled with '1' and '2' for left and right + // channels respectively. + testBufferContent: [1, 2], + + // Connect the output of source into the 1st input of merger. + mergerInputIndex: undefined, + + // The result of summed and down-mixed stereo audio should be 1.5. + // (= 1 * 0.5 + 2 * 0.5) + expected: [1.5, 0, 0, 0, 0, 0], + }).then(() => task.done()); + }); + + + // Task: Check if 3-channel input gets processed by the 'discrete' mixing + // rule. + audit.define('undefined-channel-layout', (task, should) => { + testMergerInput(should, { + numberOfChannels: 6, + + // Create a 3-channel buffer filled with '1', '2', and '3' + // respectively. + testBufferContent: [1, 2, 3], + + // Connect the output of source into the 1st input of merger. + mergerInputIndex: undefined, + + // The result of summed stereo audio should be 1 because 3-channel is + // not a canonical layout, so the input channel 2 and 3 should be + // dropped by 'discrete' mixing rule. + expected: [1, 0, 0, 0, 0, 0], + }).then(() => task.done()); + }); + + + // Task: Merging two inputs into a single stereo stream. + audit.define('merging-to-stereo', (task, should) => { + + // For this test, the number of channel should be 2. + let context = new OfflineAudioContext(2, 128, 44100); + let merger = context.createChannelMerger(); + let source1 = context.createBufferSource(); + let source2 = context.createBufferSource(); + + // Create a DC offset buffer (mono) filled with 1 and assign it to BS + // nodes. + let positiveDCOffset = createConstantBuffer(context, 128, 1); + let negativeDCOffset = createConstantBuffer(context, 128, -1); + source1.buffer = positiveDCOffset; + source2.buffer = negativeDCOffset; + + // Connect: BS#1 => merger_input#0, BS#2 => Inverter => merger_input#1 + source1.connect(merger, 0, 0); + source2.connect(merger, 0, 1); + merger.connect(context.destination); + source1.start(); + source2.start(); + + context.startRendering().then(function(buffer) { + + // Channel#0 = 1, Channel#1 = -1 + should(buffer.getChannelData(0), 'Channel #0').beConstantValueOf(1); + should(buffer.getChannelData(1), 'Channel #1').beConstantValueOf(-1); + + task.done(); + }); + }); + + + audit.run(); + </script> + </body> +</html> |