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// This file is for the audiochannelmerger-* layout tests.
// Requires |audio-testing.js| to work properly.
function testMergerInput(should, config) {
let context = new OfflineAudioContext(config.numberOfChannels, 128, 44100);
let merger = context.createChannelMerger(config.numberOfChannels);
let source = context.createBufferSource();
source.buffer = createConstantBuffer(context, 128, config.testBufferContent);
// Connect the output of source into the specified input of merger.
if (config.mergerInputIndex)
source.connect(merger, 0, config.mergerInputIndex);
else
source.connect(merger);
merger.connect(context.destination);
source.start();
return context.startRendering().then(function(buffer) {
let prefix = config.testBufferContent.length + '-channel source: ';
for (let i = 0; i < config.numberOfChannels; i++)
should(buffer.getChannelData(i), prefix + 'Channel #' + i)
.beConstantValueOf(config.expected[i]);
});
}
async function testMergerInput_W3CTH(config) {
const context = new OfflineAudioContext(config.numberOfChannels, 128, 44100);
const merger = new ChannelMergerNode(context, {
numberOfInputs: config.numberOfChannels,
});
const source = new AudioBufferSourceNode(context, {
buffer: createConstantBuffer(context, 128, config.testBufferContent),
});
// Connect the output of source into the specified input of merger.
if (config.mergerInputIndex) {
source.connect(merger, 0, config.mergerInputIndex);
} else {
source.connect(merger);
}
merger.connect(context.destination);
source.start();
return context.startRendering().then((buffer) => {
const prefix = config.testBufferContent.length + '-channel source: ';
for (let i = 0; i < config.numberOfChannels; i++) {
assert_array_equals(
buffer.getChannelData(i),
new Float32Array(buffer.length).fill(config.expected[i]),
`${prefix}Channel #${i} should be constant value of ` +
`${config.expected[i]}`);
}
});
}