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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-audioparam-interface/k-rate-connections.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-audioparam-interface/k-rate-connections.html')
| -rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/k-rate-connections.html | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/k-rate-connections.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/k-rate-connections.html new file mode 100644 index 0000000000..730f03e561 --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/k-rate-connections.html @@ -0,0 +1,139 @@ +<!doctype html> +<html> + <head> + <title>k-rate AudioParams with Inputs</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> + </head> + + <body> + <script> + let audit = Audit.createTaskRunner(); + + // Must be power of two to eliminate round-off + const sampleRate = 8192; + + // Arbitrary duration that doesn't need to be too long to verify k-rate + // automations. Probably should be at least a few render quanta. + const testDuration = 8 * RENDER_QUANTUM_FRAMES / sampleRate; + + // Test k-rate GainNode.gain is k-rate + audit.define( + {label: 'Gain', description: 'k-rate GainNode.gain'}, + (task, should) => { + let context = new OfflineAudioContext({ + numberOfChannels: 2, + sampleRate: sampleRate, + length: testDuration * sampleRate + }); + + let merger = new ChannelMergerNode( + context, {numberOfInputs: context.destination.channelCount}); + merger.connect(context.destination); + + let src = new ConstantSourceNode(context); + + createTestSubGraph(context, src, merger, 'GainNode', 'gain'); + + src.start(); + context.startRendering() + .then(buffer => { + let actual = buffer.getChannelData(0); + let expected = buffer.getChannelData(1); + + for (let k = 0; k < actual.length; + k += RENDER_QUANTUM_FRAMES) { + should( + actual.slice(k, k + RENDER_QUANTUM_FRAMES), + `gain[${k}:${k + RENDER_QUANTUM_FRAMES}]`) + .beConstantValueOf(expected[k]); + } + }) + .then(() => task.done()); + }); + + // Test k-rate StereoPannerNode.pan is k-rate + audit.define( + {label: 'StereoPanner', description: 'k-rate StereoPannerNode.pan'}, + (task, should) => { + let context = new OfflineAudioContext({ + numberOfChannels: 2, + sampleRate: sampleRate, + length: testDuration * sampleRate + }); + let merger = new ChannelMergerNode( + context, {numberOfInputs: context.destination.channelCount}); + merger.connect(context.destination); + + let src = new ConstantSourceNode(context); + + createTestSubGraph( + context, src, merger, 'StereoPannerNode', 'pan', { + testModSetup: node => { + node.offset.setValueAtTime(-1, 0); + node.offset.linearRampToValueAtTime(1, testDuration); + } + }); + + src.start(); + context.startRendering() + .then(buffer => { + let actual = buffer.getChannelData(0); + let expected = buffer.getChannelData(1); + + for (let k = 0; k < actual.length; k += 128) { + should(actual.slice(k, k + 128), `pan[${k}:${k + 128}]`) + .beConstantValueOf(expected[k]); + } + }) + .then(() => task.done()); + }); + + audit.run(); + + function createTestSubGraph( + context, src, merger, nodeName, paramName, options) { + // The test node which has its AudioParam set up for k-rate autmoations. + let tstNode = new window[nodeName](context); + + if (options && options.setups) { + options.setups(tstNode); + } + tstNode[paramName].automationRate = 'k-rate'; + + // Modulating signal for the test node. Just a linear ramp. This is + // connected to the AudioParam of the tstNode. + let tstMod = new ConstantSourceNode(context); + if (options && options.testModSetup) { + options.testModSetup(tstMod); + } else { + tstMod.offset.linearRampToValueAtTime(context.length, testDuration); + } + + tstMod.connect(tstNode[paramName]); + src.connect(tstNode).connect(merger, 0, 0); + + // The ref node is the same type of node as the test node, but uses + // a-rate automation. However, the modulating signal is k-rate. This + // causes the input to the audio param to be constant over a render, + // which is basically the same as making the audio param be k-rate. + let refNode = new window[nodeName](context); + let refMod = new ConstantSourceNode(context); + refMod.offset.automationRate = 'k-rate'; + if (options && options.testModSetup) { + options.testModSetup(refMod); + } else { + refMod.offset.linearRampToValueAtTime(context.length, testDuration); + } + + refMod.connect(refNode[paramName]); + src.connect(refNode).connect(merger, 0, 1); + + tstMod.start(); + refMod.start(); + } + </script> + </body> +</html> |