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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-test.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-test.js')
-rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-test.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-test.js b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-test.js new file mode 100644 index 0000000000..bbda190f09 --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-test.js @@ -0,0 +1,29 @@ +// Create an audio graph on an offline context that consists of a +// constant source and two gain nodes. One of the nodes is the node te +// be tested and the other is the reference node. The output from the +// test node is in channel 0 of the offline context; the reference +// node is in channel 1. +// +// Returns a dictionary with the context, source node, the test node, +// and the reference node. +function setupRetrospectiveGraph() { + // Use a sample rate that is a power of two to eliminate round-off + // in computing the currentTime. + let context = new OfflineAudioContext(2, 16384, 16384); + let source = new ConstantSourceNode(context); + + let test = new GainNode(context); + let reference = new GainNode(context); + + source.connect(test); + source.connect(reference); + + let merger = new ChannelMergerNode( + context, {numberOfInputs: context.destination.channelCount}); + test.connect(merger, 0, 0); + reference.connect(merger, 0, 1); + + merger.connect(context.destination); + + return {context: context, source: source, test: test, reference: reference}; +} |