/
mediasource-errors.html
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/
mediasource-errors.html
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<!DOCTYPE html>
<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="mediasource-util.js"></script>
<script>
function ErrorTest(testFunction, description)
{
mediasource_test(function(test, mediaElement, mediaSource)
{
var segmentInfo = MediaSourceUtil.SEGMENT_INFO;
if (!segmentInfo) {
assert_unreached("No segment info compatible with this MediaSource implementation.");
return;
}
var sourceBuffer = mediaSource.addSourceBuffer(segmentInfo.type);
MediaSourceUtil.loadBinaryData(test, segmentInfo.url, function(mediaData)
{
testFunction(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData);
});
}, description);
}
ErrorTest(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
var mediaSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.media[0]);
test.expectEvent(sourceBuffer, "error", "sourceBuffer error.");
test.expectEvent(sourceBuffer, "updateend", "mediaSegment append ended.");
test.expectEvent(mediaElement, "error", "mediaElement error.");
test.expectEvent(mediaSource, "sourceended", "mediaSource ended.");
test.expectEvent(mediaSource, "sourceclose", "mediaSource closed.");
sourceBuffer.appendBuffer(mediaSegment);
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED);
assert_equals(mediaSource.sourceBuffers.length, 0);
assert_equals(mediaSource.readyState, "closed");
test.done();
});
}, "Appending media segment before the first initialization segment.");
ErrorTest(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
// Fail if the append error algorithm occurs, since the decode
// error will be provided by us directly via endOfStream().
sourceBuffer.addEventListener("error", test.unreached_func("'error' should not be fired on sourceBuffer"));
test.expectEvent(mediaElement, "error", "mediaElement error.");
test.expectEvent(mediaSource, "sourceended", "mediaSource ended.");
test.expectEvent(mediaSource, "sourceclose", "mediaSource closed.");
mediaSource.endOfStream("decode");
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED);
assert_equals(mediaSource.sourceBuffers.length, 0);
assert_equals(mediaSource.readyState, "closed");
// Give a short time for a broken implementation to errantly fire
// "error" on sourceBuffer.
test.step_timeout(test.step_func_done(), 0);
});
}, "Signaling 'decode' error via endOfStream() before initialization segment has been appended.");
ErrorTest(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
// Fail if the append error algorithm occurs, since the network
// error will be provided by us directly via endOfStream().
sourceBuffer.addEventListener("error", test.unreached_func("'error' should not be fired on sourceBuffer"));
test.expectEvent(mediaElement, "error", "mediaElement error.");
test.expectEvent(mediaSource, "sourceended", "mediaSource ended.");
test.expectEvent(mediaSource, "sourceclose", "mediaSource closed.");
mediaSource.endOfStream("network");
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED);
assert_equals(mediaSource.sourceBuffers.length, 0);
assert_equals(mediaSource.readyState, "closed");
// Give a short time for a broken implementation to errantly fire
// "error" on sourceBuffer.
test.step_timeout(test.step_func_done(), 0);
});
}, "Signaling 'network' error via endOfStream() before initialization segment has been appended.");
ErrorTest(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
// Fail if the append error algorithm occurs, since the decode
// error will be provided by us directly via endOfStream().
sourceBuffer.addEventListener("error", test.unreached_func("'error' should not be fired on sourceBuffer"));
test.expectEvent(sourceBuffer, "updateend", "mediaSegment append ended.");
test.expectEvent(mediaElement, "loadedmetadata", "mediaElement metadata.");
sourceBuffer.appendBuffer(initSegment);
test.waitForExpectedEvents(function()
{
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_METADATA);
test.expectEvent(mediaElement, "error", "mediaElement error.");
test.expectEvent(mediaSource, "sourceended", "mediaSource ended.");
mediaSource.endOfStream("decode");
});
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_DECODE);
assert_equals(mediaSource.readyState, "ended");
// Give a short time for a broken implementation to errantly fire
// "error" on sourceBuffer.
test.step_timeout(test.step_func_done(), 0);
});
}, "Signaling 'decode' error via endOfStream() after initialization segment has been appended and the HTMLMediaElement has reached HAVE_METADATA.");
ErrorTest(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
// Fail if the append error algorithm occurs, since the network
// error will be provided by us directly via endOfStream().
sourceBuffer.addEventListener("error", test.unreached_func("'error' should not be fired on sourceBuffer"));
test.expectEvent(sourceBuffer, "updateend", "mediaSegment append ended.");
test.expectEvent(mediaElement, "loadedmetadata", "mediaElement metadata.");
sourceBuffer.appendBuffer(initSegment);
test.waitForExpectedEvents(function()
{
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_METADATA);
test.expectEvent(mediaElement, "error", "mediaElement error.");
test.expectEvent(mediaSource, "sourceended", "mediaSource ended.");
mediaSource.endOfStream("network");
});
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_NETWORK);
assert_equals(mediaSource.readyState, "ended");
// Give a short time for a broken implementation to errantly fire
// "error" on sourceBuffer.
test.step_timeout(test.step_func_done(), 0);
});
}, "Signaling 'network' error via endOfStream() after initialization segment has been appended and the HTMLMediaElement has reached HAVE_METADATA.");
ErrorTest(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);
test.expectEvent(sourceBuffer, "updateend", "mediaSegment append ended.");
test.expectEvent(mediaElement, "loadedmetadata", "mediaElement metadata.");
sourceBuffer.appendBuffer(initSegment);
test.waitForExpectedEvents(function()
{
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_METADATA);
var mediaSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.media[0]);
var index = segmentInfo.init.size + (mediaSegment.length - 1) / 2;
// Corrupt the media data from index of mediaData, so it can signal 'decode' error.
// Here use mediaSegment to replace the original mediaData[index, index + mediaSegment.length]
mediaData.set(mediaSegment, index);
test.expectEvent(sourceBuffer, "error", "sourceBuffer error.");
test.expectEvent(sourceBuffer, "updateend", "mediaSegment append ended.");
test.expectEvent(mediaElement, "error", "mediaElement error.");
test.expectEvent(mediaSource, "sourceended", "mediaSource ended.");
sourceBuffer.appendBuffer(mediaData);
});
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_DECODE);
test.done();
});
}, "Signaling 'decode' error via segment parser loop algorithm after initialization segment has been appended.");
ErrorTest(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
var mediaSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.media[0]);
var index = segmentInfo.init.size + (mediaSegment.length - 1) / 2;
// Corrupt the media data from index of mediaData, so it can signal 'decode' error.
// Here use mediaSegment to replace the original mediaData[index, index + mediaSegment.length]
mediaData.set(mediaSegment, index);
// Depending on implementation, mediaElement transition to
// HAVE_METADATA and dispatching 'loadedmetadata' may occur, since the
// initialization segment is uncorrupted and forms the initial part of
// the appended bytes. The segment parser loop continues and
// eventually should observe decode error. Other implementations may
// delay such transition until some larger portion of the append's
// parsing is completed or until the media element is configured to
// handle the playback of media with the associated metadata (which may
// not occur in this case before the MSE append error algorithm executes.)
// So we cannot reliably expect the lack or presence of
// 'loadedmetadata' before the MSE append error algortihm executes in
// this case; similarly, mediaElement's resulting readyState may be
// either HAVE_NOTHING or HAVE_METADATA after the append error
// algorithm executes, and the resulting MediaError code would
// respectively be MEDIA_ERR_SRC_NOT_SUPPORTED or MEDIA_ERR_DECODE.
let loaded = false;
mediaElement.addEventListener("loadedmetadata", test.step_func(() => { loaded = true; }));
let errored = false;
mediaElement.addEventListener("error", test.step_func(() => { errored = true; }));
test.expectEvent(sourceBuffer, "error", "sourceBuffer error.");
test.expectEvent(sourceBuffer, "updateend", "mediaSegment append ended.");
test.expectEvent(mediaSource, "sourceended", "mediaSource ended.");
sourceBuffer.appendBuffer(mediaData);
let verifyFinalState = test.step_func(function() {
if (loaded) {
assert_greater_than(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_DECODE);
test.done();
} else {
assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
assert_true(mediaElement.error != null);
assert_equals(mediaElement.error.code, MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED);
test.done();
}
});
let awaitMediaElementError = test.step_func(function() {
if (!errored) {
test.step_timeout(awaitMediaElementError, 100);
} else {
verifyFinalState();
}
});
test.waitForExpectedEvents(function()
{
// Not all implementations will reliably fire a "loadedmetadata"
// event, so we use custom logic to verify mediaElement state based
// on whether or not "loadedmetadata" was ever fired. But first
// we must ensure "error" was fired on the mediaElement.
awaitMediaElementError();
});
}, "Signaling 'decode' error via segment parser loop algorithm of append containing init plus corrupted media segment.");
</script>