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331 lines
12 KiB
HTML
331 lines
12 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>
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Test Basic Functionality of AudioBuffer.copyFromChannel and
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AudioBuffer.copyToChannel
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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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</head>
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<body>
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<script id="layout-test-code">
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// Define utility routines.
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// Initialize the AudioBuffer |buffer| with a ramp signal on each channel.
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// The ramp starts at channel number + 1.
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function initializeAudioBufferRamp(buffer) {
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for (let c = 0; c < buffer.numberOfChannels; ++c) {
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let d = buffer.getChannelData(c);
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for (let k = 0; k < d.length; ++k) {
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d[k] = k + c + 1;
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}
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}
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}
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// Create a Float32Array of length |length| and initialize the array to
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// -1.
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function createInitializedF32Array(length) {
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let x = new Float32Array(length);
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for (let k = 0; k < length; ++k) {
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x[k] = -1;
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}
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return x;
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}
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// Create a Float32Array of length |length| that is initialized to be a
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// ramp starting at 1.
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function createFloat32RampArray(length) {
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let x = new Float32Array(length);
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for (let k = 0; k < x.length; ++k) {
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x[k] = k + 1;
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}
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return x;
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}
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// Test that the array |x| is a ramp starting at value |start| of length
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// |length|, starting at |startIndex| in the array. |startIndex| is
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// optional and defaults to 0. Any other values must be -1.
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function shouldBeRamp(
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should, testName, x, startValue, length, startIndex) {
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let k;
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let startingIndex = startIndex || 0;
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let expected = Array(x.length);
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// Fill the expected array with the correct results.
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// The initial part (if any) must be -1.
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for (k = 0; k < startingIndex; ++k) {
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expected[k] = -1;
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}
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// The second part should be a ramp starting with |startValue|
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for (; k < startingIndex + length; ++k) {
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expected[k] = startValue + k - startingIndex;
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}
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// The last part (if any) should be -1.
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for (; k < x.length; ++k) {
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expected[k] = -1;
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}
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should(x, testName, {numberOfArrayLog: 32}).beEqualToArray(expected);
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}
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let audit = Audit.createTaskRunner();
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let context = new AudioContext();
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// Temp array for testing exceptions for copyToChannel/copyFromChannel.
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// The length is arbitrary.
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let x = new Float32Array(8);
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// Number of frames in the AudioBuffer for testing. This is pretty
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// arbitrary so choose a fairly small value.
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let bufferLength = 16;
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// Number of channels in the AudioBuffer. Also arbitrary, but it should
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// be greater than 1 for test coverage.
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let numberOfChannels = 3;
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// AudioBuffer that will be used for testing copyFrom and copyTo.
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let buffer = context.createBuffer(
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numberOfChannels, bufferLength, context.sampleRate);
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let initialValues = Array(numberOfChannels);
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// Initialize things
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audit.define('initialize', (task, should) => {
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// Initialize to -1.
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initialValues.fill(-1);
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should(initialValues, 'Initialized values').beConstantValueOf(-1)
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task.done();
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});
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// Test that expected exceptions are signaled for copyFrom.
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audit.define('copyFrom-exceptions', (task, should) => {
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should(
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AudioBuffer.prototype.copyFromChannel,
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'AudioBuffer.prototype.copyFromChannel')
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.exist();
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should(
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() => {
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buffer = context.createBuffer(
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numberOfChannels, bufferLength, context.sampleRate);
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},
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'0: buffer = context.createBuffer(' + numberOfChannels + ', ' +
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bufferLength + ', context.sampleRate)')
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.notThrow();
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should(() => {
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buffer.copyFromChannel(null, 0);
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}, '1: buffer.copyFromChannel(null, 0)').throw(TypeError);
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should(() => {
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buffer.copyFromChannel(context, 0);
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}, '2: buffer.copyFromChannel(context, 0)').throw(TypeError);
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should(() => {
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buffer.copyFromChannel(x, -1);
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}, '3: buffer.copyFromChannel(x, -1)').throw('IndexSizeError');
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should(
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() => {
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buffer.copyFromChannel(x, numberOfChannels);
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},
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'4: buffer.copyFromChannel(x, ' + numberOfChannels + ')')
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.throw('IndexSizeError');
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;
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should(() => {
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buffer.copyFromChannel(x, 0, -1);
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}, '5: buffer.copyFromChannel(x, 0, -1)').throw('IndexSizeError');
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should(
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() => {
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buffer.copyFromChannel(x, 0, bufferLength);
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},
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'6: buffer.copyFromChannel(x, 0, ' + bufferLength + ')')
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.throw('IndexSizeError');
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should(() => {
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buffer.copyFromChannel(x, 3);
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}, '7: buffer.copyFromChannel(x, 3)').throw('IndexSizeError');
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if (window.SharedArrayBuffer) {
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let shared_buffer = new Float32Array(new SharedArrayBuffer(32));
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should(
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() => {
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buffer.copyFromChannel(shared_buffer, 0);
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},
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'8: buffer.copyFromChannel(SharedArrayBuffer view, 0)')
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.throw(TypeError);
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should(
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() => {
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buffer.copyFromChannel(shared_buffer, 0, 0);
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},
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'9: buffer.copyFromChannel(SharedArrayBuffer view, 0, 0)')
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.throw(TypeError);
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}
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task.done();
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});
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// Test that expected exceptions are signaled for copyTo.
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audit.define('copyTo-exceptions', (task, should) => {
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should(
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AudioBuffer.prototype.copyToChannel,
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'AudioBuffer.prototype.copyToChannel')
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.exist();
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should(() => {
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buffer.copyToChannel(null, 0);
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}, '0: buffer.copyToChannel(null, 0)').throw(TypeError);
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should(() => {
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buffer.copyToChannel(context, 0);
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}, '1: buffer.copyToChannel(context, 0)').throw(TypeError);
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should(() => {
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buffer.copyToChannel(x, -1);
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}, '2: buffer.copyToChannel(x, -1)').throw('IndexSizeError');
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should(
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() => {
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buffer.copyToChannel(x, numberOfChannels);
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},
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'3: buffer.copyToChannel(x, ' + numberOfChannels + ')')
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.throw('IndexSizeError');
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should(() => {
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buffer.copyToChannel(x, 0, -1);
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}, '4: buffer.copyToChannel(x, 0, -1)').throw('IndexSizeError');
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should(
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() => {
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buffer.copyToChannel(x, 0, bufferLength);
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},
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'5: buffer.copyToChannel(x, 0, ' + bufferLength + ')')
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.throw('IndexSizeError');
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should(() => {
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buffer.copyToChannel(x, 3);
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}, '6: buffer.copyToChannel(x, 3)').throw('IndexSizeError');
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if (window.SharedArrayBuffer) {
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let shared_buffer = new Float32Array(new SharedArrayBuffer(32));
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should(
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() => {
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buffer.copyToChannel(shared_buffer, 0);
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},
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'7: buffer.copyToChannel(SharedArrayBuffer view, 0)')
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.throw(TypeError);
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should(
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() => {
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buffer.copyToChannel(shared_buffer, 0, 0);
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},
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'8: buffer.copyToChannel(SharedArrayBuffer view, 0, 0)')
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.throw(TypeError);
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}
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task.done();
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});
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// Test copyFromChannel
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audit.define('copyFrom-validate', (task, should) => {
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// Initialize the AudioBuffer to a ramp for testing copyFrom.
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initializeAudioBufferRamp(buffer);
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// Test copyFrom operation with a short destination array, filling the
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// destination completely.
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for (let c = 0; c < numberOfChannels; ++c) {
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let dst8 = createInitializedF32Array(8);
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buffer.copyFromChannel(dst8, c);
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shouldBeRamp(
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should, 'buffer.copyFromChannel(dst8, ' + c + ')', dst8, c + 1, 8)
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}
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// Test copyFrom operation with a short destination array using a
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// non-zero start index that still fills the destination completely.
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for (let c = 0; c < numberOfChannels; ++c) {
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let dst8 = createInitializedF32Array(8);
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buffer.copyFromChannel(dst8, c, 1);
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shouldBeRamp(
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should, 'buffer.copyFromChannel(dst8, ' + c + ', 1)', dst8, c + 2,
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8)
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}
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// Test copyFrom operation with a short destination array using a
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// non-zero start index that does not fill the destinatiom completely.
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// The extra elements should be unchanged.
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for (let c = 0; c < numberOfChannels; ++c) {
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let dst8 = createInitializedF32Array(8);
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let startInChannel = bufferLength - 5;
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buffer.copyFromChannel(dst8, c, startInChannel);
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shouldBeRamp(
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should,
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'buffer.copyFromChannel(dst8, ' + c + ', ' + startInChannel + ')',
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dst8, c + 1 + startInChannel, bufferLength - startInChannel);
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}
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// Copy operation with the destination longer than the buffer, leaving
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// the trailing elements of the destination untouched.
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for (let c = 0; c < numberOfChannels; ++c) {
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let dst26 = createInitializedF32Array(bufferLength + 10);
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buffer.copyFromChannel(dst26, c);
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shouldBeRamp(
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should, 'buffer.copyFromChannel(dst26, ' + c + ')', dst26, c + 1,
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bufferLength);
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}
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task.done();
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});
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// Test copyTo
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audit.define('copyTo-validate', (task, should) => {
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// Create a source consisting of a ramp starting at 1, longer than the
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// AudioBuffer
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let src = createFloat32RampArray(bufferLength + 10);
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// Test copyTo with AudioBuffer shorter than Float32Array. The
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// AudioBuffer should be completely filled with the Float32Array.
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should(
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() => {
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buffer =
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createConstantBuffer(context, bufferLength, initialValues);
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},
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'buffer = createConstantBuffer(context, ' + bufferLength + ', [' +
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initialValues + '])')
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.notThrow();
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for (let c = 0; c < numberOfChannels; ++c) {
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buffer.copyToChannel(src, c);
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shouldBeRamp(
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should, 'buffer.copyToChannel(src, ' + c + ')',
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buffer.getChannelData(c), 1, bufferLength);
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}
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// Test copyTo with AudioBuffer longer than the Float32Array. The tail
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// of the AudioBuffer should be unchanged.
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buffer = createConstantBuffer(context, bufferLength, initialValues);
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let src10 = createFloat32RampArray(10);
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for (let c = 0; c < numberOfChannels; ++c) {
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buffer.copyToChannel(src10, c);
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shouldBeRamp(
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should, 'buffer.copyToChannel(src10, ' + c + ')',
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buffer.getChannelData(c), 1, 10);
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}
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// Test copyTo with non-default startInChannel. Part of the AudioBuffer
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// should filled with the beginning and end sections untouched.
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buffer = createConstantBuffer(context, bufferLength, initialValues);
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for (let c = 0; c < numberOfChannels; ++c) {
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let startInChannel = 5;
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buffer.copyToChannel(src10, c, startInChannel);
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shouldBeRamp(
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should,
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'buffer.copyToChannel(src10, ' + c + ', ' + startInChannel + ')',
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buffer.getChannelData(c), 1, src10.length, startInChannel);
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}
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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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