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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/167658">167658</a></dd>
<dt>Author</dt> <dd>eric.carlson@apple.com</dd>
<dt>Date</dt> <dd>2014-04-22 07:06:36 -0700 (Tue, 22 Apr 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>[Mac] don't ask for AVAssetTrack properties before they are available
https://bugs.webkit.org/show_bug.cgi?id=131902
<rdar://problem/16505076>
Reviewed by Jer Noble.
No new tests, the behavior this changes can not be tested with a layout test.
* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h:
* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
(WebCore::MediaPlayerPrivateAVFoundationObjC::MediaPlayerPrivateAVFoundationObjC): Initialize
m_cachedTotalBytes.
(WebCore::MediaPlayerPrivateAVFoundationObjC::beginLoadingMetadata): Don't report that
metadata has been loaded until the track properties we need have been loaded too.
(WebCore::MediaPlayerPrivateAVFoundationObjC::totalBytes): Cache totalBytes instead
of recalculating it every time.
(WebCore::MediaPlayerPrivateAVFoundationObjC::tracksDidChange): Invalidate cached
total bytes.
(WebCore::assetTrackMetadataKeyNames): Array of AVAssetTrack properties we use.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsavfoundationobjcMediaPlayerPrivateAVFoundationObjCh">trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsavfoundationobjcMediaPlayerPrivateAVFoundationObjCmm">trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (167657 => 167658)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2014-04-22 13:39:49 UTC (rev 167657)
+++ trunk/Source/WebCore/ChangeLog 2014-04-22 14:06:36 UTC (rev 167658)
</span><span class="lines">@@ -1,3 +1,25 @@
</span><ins>+2014-04-22 Eric Carlson <eric.carlson@apple.com>
+
+ [Mac] don't ask for AVAssetTrack properties before they are available
+ https://bugs.webkit.org/show_bug.cgi?id=131902
+ <rdar://problem/16505076>
+
+ Reviewed by Jer Noble.
+
+ No new tests, the behavior this changes can not be tested with a layout test.
+
+ * platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h:
+ * platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
+ (WebCore::MediaPlayerPrivateAVFoundationObjC::MediaPlayerPrivateAVFoundationObjC): Initialize
+ m_cachedTotalBytes.
+ (WebCore::MediaPlayerPrivateAVFoundationObjC::beginLoadingMetadata): Don't report that
+ metadata has been loaded until the track properties we need have been loaded too.
+ (WebCore::MediaPlayerPrivateAVFoundationObjC::totalBytes): Cache totalBytes instead
+ of recalculating it every time.
+ (WebCore::MediaPlayerPrivateAVFoundationObjC::tracksDidChange): Invalidate cached
+ total bytes.
+ (WebCore::assetTrackMetadataKeyNames): Array of AVAssetTrack properties we use.
+
</ins><span class="cx"> 2014-04-22 Peter Molnar <pmolnar.u-szeged@partner.samsung.com>
</span><span class="cx">
</span><span class="cx"> Buildfix after r167650 broke non-Cocoa builds
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsavfoundationobjcMediaPlayerPrivateAVFoundationObjCh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h (167657 => 167658)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h 2014-04-22 13:39:49 UTC (rev 167657)
+++ trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h 2014-04-22 14:06:36 UTC (rev 167658)
</span><span class="lines">@@ -320,6 +320,7 @@
</span><span class="cx"> FloatSize m_cachedPresentationSize;
</span><span class="cx"> double m_cachedDuration;
</span><span class="cx"> double m_cachedRate;
</span><ins>+ mutable long long m_cachedTotalBytes;
</ins><span class="cx"> unsigned m_pendingStatusChanges;
</span><span class="cx"> int m_cachedItemStatus;
</span><span class="cx"> bool m_cachedLikelyToKeepUp;
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsavfoundationobjcMediaPlayerPrivateAVFoundationObjCmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm (167657 => 167658)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm 2014-04-22 13:39:49 UTC (rev 167657)
+++ trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm 2014-04-22 14:06:36 UTC (rev 167658)
</span><span class="lines">@@ -294,6 +294,7 @@
</span><span class="cx">
</span><span class="cx"> static NSArray *assetMetadataKeyNames();
</span><span class="cx"> static NSArray *itemKVOProperties();
</span><ins>+static NSArray* assetTrackMetadataKeyNames();
</ins><span class="cx">
</span><span class="cx"> #if !LOG_DISABLED
</span><span class="cx"> static const char *boolString(bool val)
</span><span class="lines">@@ -365,6 +366,7 @@
</span><span class="cx"> , m_currentTextTrack(0)
</span><span class="cx"> , m_cachedDuration(MediaPlayer::invalidTime())
</span><span class="cx"> , m_cachedRate(0)
</span><ins>+ , m_cachedTotalBytes(0)
</ins><span class="cx"> , m_pendingStatusChanges(0)
</span><span class="cx"> , m_cachedItemStatus(MediaPlayerAVPlayerItemStatusDoesNotExist)
</span><span class="cx"> , m_cachedLikelyToKeepUp(false)
</span><span class="lines">@@ -783,9 +785,23 @@
</span><span class="cx"> void MediaPlayerPrivateAVFoundationObjC::beginLoadingMetadata()
</span><span class="cx"> {
</span><span class="cx"> LOG(Media, "MediaPlayerPrivateAVFoundationObjC::beginLoadingMetadata(%p) - requesting metadata loading", this);
</span><ins>+ dispatch_group_t metadataLoadingGroup = dispatch_group_create();
+ dispatch_group_enter(metadataLoadingGroup);
</ins><span class="cx"> [m_avAsset.get() loadValuesAsynchronouslyForKeys:[assetMetadataKeyNames() retain] completionHandler:^{
</span><ins>+ if ([m_avAsset.get() statusOfValueForKey:@"tracks" error:nil] == AVKeyValueStatusLoaded) {
+ for (AVAssetTrack *track in [m_avAsset.get() tracks]) {
+ dispatch_group_enter(metadataLoadingGroup);
+ [track loadValuesAsynchronouslyForKeys:[assetTrackMetadataKeyNames() retain] completionHandler:^{
+ dispatch_group_leave(metadataLoadingGroup);
+ }];
+ }
+ }
+ dispatch_group_leave(metadataLoadingGroup);
+ }];
+ dispatch_group_notify(metadataLoadingGroup, dispatch_get_main_queue(), ^{
</ins><span class="cx"> [m_objcObserver.get() metadataLoaded];
</span><del>- }];
</del><ins>+ });
+ dispatch_release(metadataLoadingGroup);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> MediaPlayerPrivateAVFoundation::ItemStatus MediaPlayerPrivateAVFoundationObjC::playerItemStatus() const
</span><span class="lines">@@ -1130,11 +1146,13 @@
</span><span class="cx"> if (!metaDataAvailable())
</span><span class="cx"> return 0;
</span><span class="cx">
</span><del>- long long totalMediaSize = 0;
</del><ins>+ if (m_cachedTotalBytes)
+ return m_cachedTotalBytes;
+
</ins><span class="cx"> for (AVPlayerItemTrack *thisTrack in m_cachedTracks.get())
</span><del>- totalMediaSize += [[thisTrack assetTrack] totalSampleDataLength];
</del><ins>+ m_cachedTotalBytes += [[thisTrack assetTrack] totalSampleDataLength];
</ins><span class="cx">
</span><del>- return totalMediaSize;
</del><ins>+ return m_cachedTotalBytes;
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void MediaPlayerPrivateAVFoundationObjC::setAsset(id asset)
</span><span class="lines">@@ -2343,6 +2361,7 @@
</span><span class="cx"> void MediaPlayerPrivateAVFoundationObjC::tracksDidChange(RetainPtr<NSArray> tracks)
</span><span class="cx"> {
</span><span class="cx"> m_cachedTracks = tracks;
</span><ins>+ m_cachedTotalBytes = 0;
</ins><span class="cx">
</span><span class="cx"> tracksChanged();
</span><span class="cx"> updateStates();
</span><span class="lines">@@ -2424,6 +2443,15 @@
</span><span class="cx"> return keys;
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+NSArray* assetTrackMetadataKeyNames()
+{
+ static NSArray* keys;
+ if (!keys)
+ keys = @[@"totalSampleDataLength", @"mediaType"];
+
+ return keys;
+}
+
</ins><span class="cx"> } // namespace WebCore
</span><span class="cx">
</span><span class="cx"> @implementation WebCoreAVFMovieObserver
</span></span></pre>
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