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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - MediaPlayer::getSupportedTypes only returns types from the last engine registered"
href="https://bugs.webkit.org/show_bug.cgi?id=150669">150669</a>
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<th>Summary</th>
<td>MediaPlayer::getSupportedTypes only returns types from the last engine registered
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Media Elements
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>eric.carlson@apple.com
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<pre>MediaPlayer::getSupportedTypes is used by MIMETypeRegistry::initializeSupportedMediaMIMETypes to build a static list of all media MIME types supported by a port. MediaPlayer::getSupportedTypes takes a HashSet<String>&, which it passes to ever registered media engine's getSupportedTypes factory method, which of course means that each call overwrites the values added by the previous engine.
This works as long as every registered media engine supports the same set of MIME types, or the last engine registered is a superset of them all. r191721 added a MediaStream engine to the Mac port. This engine happens to get registered last, so MediaPlayer::getSupportedTypes returns an empty hash set.</pre>
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