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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /media-source/mse-for-webcodecs/tentative/mediasource-webcodecs-addsourcebuffer.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<title>Test MediaSource addSourceBuffer overloads for WebCodecs Audio/VideoDecoderConfigs</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
setup(() => {
assert_implements(
SourceBuffer.prototype.hasOwnProperty('appendEncodedChunks'),
'SourceBuffer prototype hasOwnProperty "appendEncodedChunks", used ' +
'here to feature detect MSE-for-WebCodecs implementation.');
});
testInvalidArguments();
testValidArguments();
function getValidAudioConfig() {
// TODO(crbug.com/1144908): Consider confirming with WebCodecs'
// isConfigSupported() once that API is available.
return {
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2
};
}
function getValidVideoConfig() {
// TODO(crbug.com/1144908): Consider confirming with WebCodecs'
// isConfigSupported() once that API is available.
return { codec: 'vp09.00.10.08' };
}
function testInvalidArguments() {
const INVALID_CASES = [
{ arg: null,
name: 'null' },
{ arg: undefined,
name: 'undefined' },
{ arg: { },
name: '{ empty dictionary }' },
{
arg: {
audioConfig: getValidAudioConfig(),
videoConfig: getValidVideoConfig()
},
name: '{ valid audioConfig and videoConfig }',
},
{ arg: { audioConfig: { sampleRate: 48000, numberOfChannels: 2 } },
name: 'audio config missing required member "codec"' },
{ arg: { videoConfig: { } },
name: 'video config missing required member "codec"' },
];
[ 'closed', 'open', 'ended' ].forEach(readyStateScenario => {
INVALID_CASES.forEach(invalidCase => {
runAddSourceBufferTest(invalidCase['arg'] /* argument */,
false /* isValidArgument */,
invalidCase['name'] /* argumentDescription */,
readyStateScenario);
});
});
}
function testValidArguments() {
const VALID_CASES = [
{
arg: {
audioConfig: getValidAudioConfig()
},
name: 'valid audioConfig'
},
{
arg: {
videoConfig: getValidVideoConfig()
},
name: 'valid videoConfig'
},
];
[ 'closed', 'open', 'ended' ].forEach(readyStateScenario => {
VALID_CASES.forEach(validCase => {
runAddSourceBufferTest(
validCase['arg'] /* argument */,
true /* isValidArgument */,
validCase['name'] /* argumentDescription */,
readyStateScenario);
});
});
}
async function getClosedMediaSource(test) {
let mediaSource = new MediaSource();
assert_equals(mediaSource.readyState, 'closed');
return mediaSource;
}
async function getOpenMediaSource(test) {
return new Promise(async resolve => {
const v = document.createElement('video');
const mediaSource = new MediaSource();
const url = URL.createObjectURL(mediaSource);
mediaSource.addEventListener('sourceopen', test.step_func(() => {
URL.revokeObjectURL(url);
assert_equals(mediaSource.readyState, 'open', 'MediaSource is open');
resolve(mediaSource);
}), { once: true });
v.src = url;
});
}
async function getEndedMediaSource(test) {
let mediaSource = await getOpenMediaSource(test);
assert_equals(mediaSource.readyState, 'open', 'MediaSource is open');
mediaSource.endOfStream();
assert_equals(mediaSource.readyState, 'ended', 'MediaSource is ended');
return mediaSource;
}
function runAddSourceBufferTest(argument, isValidArgument, argumentDescription, readyStateScenario) {
const testDescription = 'addSourceBuffer call with ' +
(isValidArgument ? 'valid' : 'invalid') +
' argument ' + argumentDescription + ' while MediaSource readyState is ' +
readyStateScenario;
switch(readyStateScenario) {
case 'closed':
promise_test(async t => {
let mediaSource = await getClosedMediaSource(t);
assert_equals(mediaSource.readyState, 'closed');
let sourceBuffer;
if (isValidArgument) {
assert_throws_dom('InvalidStateError',
() => { sourceBuffer = mediaSource.addSourceBuffer(argument); },
'addSourceBuffer(valid config) throws InvalidStateError if MediaSource is "closed"');
assert_equals(sourceBuffer, undefined,
'addSourceBuffer result for valid config while "closed" should be exception');
} else {
assert_throws_js(TypeError,
() => { sourceBuffer = mediaSource.addSourceBuffer(argument); },
'addSourceBuffer(invalid config) throws TypeError if MediaSource is "closed"');
assert_equals(sourceBuffer, undefined,
'addSourceBuffer result for invalid config while "closed" should be exception');
}
}, testDescription);
break;
case 'open':
promise_test(async t => {
let mediaSource = await getOpenMediaSource(t);
assert_equals(mediaSource.readyState, 'open', 'MediaSource is open');
let sourceBuffer;
if (isValidArgument) {
sourceBuffer = mediaSource.addSourceBuffer(argument);
assert_true(sourceBuffer instanceof SourceBuffer,
'addSourceBuffer result for valid config while "open" should be a SourceBuffer instance');
} else {
assert_throws_js(TypeError,
() => { sourceBuffer = mediaSource.addSourceBuffer(argument); },
'addSourceBuffer(invalid config) throws TypeError if MediaSource is "open"');
assert_equals(sourceBuffer, undefined,
'addSourceBufferResult for invalid config while "open" should be exception');
}
}, testDescription);
break;
case 'ended':
promise_test(async t => {
let mediaSource = await getEndedMediaSource(t);
let sourceBuffer;
if (isValidArgument) {
assert_throws_dom('InvalidStateError',
() => { sourceBuffer = mediaSource.addSourceBuffer(argument); },
'addSourceBuffer(valid config) throws InvalidStateError if MediaSource is "ended"');
assert_equals(sourceBuffer, undefined,
'addSourceBuffer result for valid config while "ended" should be exception');
} else {
assert_throws_js(TypeError,
() => { sourceBuffer = mediaSource.addSourceBuffer(argument); },
'addSourceBuffer(invalid config) throws TypeError if MediaSource is "ended"');
assert_equals(sourceBuffer, undefined,
'addSourceBuffer result for invalid config while "ended" should be exception');
}
}, testDescription);
break;
default:
assert_unreached('Invalid readyStateScenario ' + readyStateScenario);
break;
}
}
</script>
</html>