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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/175370">175370</a></dd>
<dt>Author</dt> <dd>philn@webkit.org</dd>
<dt>Date</dt> <dd>2014-10-30 01:53:39 -0700 (Thu, 30 Oct 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>[GStreamer] Video resolution changes trigger a crash in the TextureMapper
https://bugs.webkit.org/show_bug.cgi?id=137065

Reviewed by Gustavo Noronha Silva.

Switch to GstSample for buffer+caps communication between the
video sink and the player. Using a single object type for this
avoid issues where the caps might not correctly describe the
buffer contents anymore, for example when the video resolution is
changed.

* platform/graphics/gstreamer/ImageGStreamer.h: Use GstSample
instead of GstBuffer+GstCaps.
(WebCore::ImageGStreamer::createImage):
* platform/graphics/gstreamer/ImageGStreamerCairo.cpp: Ditto.
(ImageGStreamer::ImageGStreamer):
* platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:
(WebCore::mediaPlayerPrivateRepaintCallback): The repaint signal
now uses a GstSample instead of a GstBuffer.
(WebCore::MediaPlayerPrivateGStreamerBase::MediaPlayerPrivateGStreamerBase):
Store the current sample instead of a buffer. Also renamed the
mutex protecting access to the sample.
(WebCore::MediaPlayerPrivateGStreamerBase::~MediaPlayerPrivateGStreamerBase): Ditto.
(WebCore::MediaPlayerPrivateGStreamerBase::naturalSize): Return
early if no sample is available. The caps used to get the video
size are store in the sample.
(WebCore::MediaPlayerPrivateGStreamerBase::updateTexture): Use
GstSample instead of GstBuffer.
(WebCore::MediaPlayerPrivateGStreamerBase::triggerRepaint): Ditto.
(WebCore::MediaPlayerPrivateGStreamerBase::paint): Ditto.
* platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.h:
* platform/graphics/gstreamer/VideoSinkGStreamer.cpp: Now store a
GstSample internally. Also removed the now useless current-caps property.
(_WebKitVideoSinkPrivate::_WebKitVideoSinkPrivate): Renamed the
mutex protecting access to the sample.
(_WebKitVideoSinkPrivate::~_WebKitVideoSinkPrivate): Ditto.
(webkit_video_sink_init): Disable last-sample in basesink since we
already store one in our sink anyway.
(webkitVideoSinkTimeoutCallback): Switch to GstSample.
(webkitVideoSinkRender): Ditto.
(unlockSampleMutex): Ditto.
(webkitVideoSinkUnlock): Ditto.
(webkitVideoSinkUnlockStop): Ditto.
(webkitVideoSinkStop): Ditto!
(webkitVideoSinkStart): Ditto.
(webkit_video_sink_class_init): Drop current-caps property.
(webkitVideoSinkGetProperty): Deleted.
(unlockBufferMutex): Deleted.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsgstreamerImageGStreamerh">trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamer.h</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsgstreamerImageGStreamerCairocpp">trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamerCairo.cpp</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsgstreamerMediaPlayerPrivateGStreamerBasecpp">trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsgstreamerMediaPlayerPrivateGStreamerBaseh">trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.h</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsgstreamerVideoSinkGStreamercpp">trunk/Source/WebCore/platform/graphics/gstreamer/VideoSinkGStreamer.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (175369 => 175370)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2014-10-30 08:02:20 UTC (rev 175369)
+++ trunk/Source/WebCore/ChangeLog        2014-10-30 08:53:39 UTC (rev 175370)
</span><span class="lines">@@ -1,3 +1,54 @@
</span><ins>+2014-10-24  Philippe Normand  &lt;pnormand@igalia.com&gt;
+
+        [GStreamer] Video resolution changes trigger a crash in the TextureMapper
+        https://bugs.webkit.org/show_bug.cgi?id=137065
+
+        Reviewed by Gustavo Noronha Silva.
+
+        Switch to GstSample for buffer+caps communication between the
+        video sink and the player. Using a single object type for this
+        avoid issues where the caps might not correctly describe the
+        buffer contents anymore, for example when the video resolution is
+        changed.
+
+        * platform/graphics/gstreamer/ImageGStreamer.h: Use GstSample
+        instead of GstBuffer+GstCaps.
+        (WebCore::ImageGStreamer::createImage):
+        * platform/graphics/gstreamer/ImageGStreamerCairo.cpp: Ditto.
+        (ImageGStreamer::ImageGStreamer):
+        * platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:
+        (WebCore::mediaPlayerPrivateRepaintCallback): The repaint signal
+        now uses a GstSample instead of a GstBuffer.
+        (WebCore::MediaPlayerPrivateGStreamerBase::MediaPlayerPrivateGStreamerBase):
+        Store the current sample instead of a buffer. Also renamed the
+        mutex protecting access to the sample.
+        (WebCore::MediaPlayerPrivateGStreamerBase::~MediaPlayerPrivateGStreamerBase): Ditto.
+        (WebCore::MediaPlayerPrivateGStreamerBase::naturalSize): Return
+        early if no sample is available. The caps used to get the video
+        size are store in the sample.
+        (WebCore::MediaPlayerPrivateGStreamerBase::updateTexture): Use
+        GstSample instead of GstBuffer.
+        (WebCore::MediaPlayerPrivateGStreamerBase::triggerRepaint): Ditto.
+        (WebCore::MediaPlayerPrivateGStreamerBase::paint): Ditto.
+        * platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.h:
+        * platform/graphics/gstreamer/VideoSinkGStreamer.cpp: Now store a
+        GstSample internally. Also removed the now useless current-caps property.
+        (_WebKitVideoSinkPrivate::_WebKitVideoSinkPrivate): Renamed the
+        mutex protecting access to the sample.
+        (_WebKitVideoSinkPrivate::~_WebKitVideoSinkPrivate): Ditto.
+        (webkit_video_sink_init): Disable last-sample in basesink since we
+        already store one in our sink anyway.
+        (webkitVideoSinkTimeoutCallback): Switch to GstSample.
+        (webkitVideoSinkRender): Ditto.
+        (unlockSampleMutex): Ditto.
+        (webkitVideoSinkUnlock): Ditto.
+        (webkitVideoSinkUnlockStop): Ditto.
+        (webkitVideoSinkStop): Ditto!
+        (webkitVideoSinkStart): Ditto.
+        (webkit_video_sink_class_init): Drop current-caps property.
+        (webkitVideoSinkGetProperty): Deleted.
+        (unlockBufferMutex): Deleted.
+
</ins><span class="cx"> 2014-10-30  Carlos Garcia Campos  &lt;cgarcia@igalia.com&gt;
</span><span class="cx"> 
</span><span class="cx">         FormDataBuilder should not use Document
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsgstreamerImageGStreamerh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamer.h (175369 => 175370)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamer.h        2014-10-30 08:02:20 UTC (rev 175369)
+++ trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamer.h        2014-10-30 08:53:39 UTC (rev 175370)
</span><span class="lines">@@ -38,9 +38,9 @@
</span><span class="cx"> 
</span><span class="cx"> class ImageGStreamer : public RefCounted&lt;ImageGStreamer&gt; {
</span><span class="cx">     public:
</span><del>-        static PassRefPtr&lt;ImageGStreamer&gt; createImage(GstBuffer* buffer, GstCaps* caps)
</del><ins>+        static PassRefPtr&lt;ImageGStreamer&gt; createImage(GstSample* sample)
</ins><span class="cx">         {
</span><del>-            return adoptRef(new ImageGStreamer(buffer, caps));
</del><ins>+            return adoptRef(new ImageGStreamer(sample));
</ins><span class="cx">         }
</span><span class="cx">         ~ImageGStreamer();
</span><span class="cx"> 
</span><span class="lines">@@ -60,7 +60,7 @@
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="cx">     private:
</span><del>-        ImageGStreamer(GstBuffer*, GstCaps*);
</del><ins>+        ImageGStreamer(GstSample*);
</ins><span class="cx">         RefPtr&lt;BitmapImage&gt; m_image;
</span><span class="cx">         FloatRect m_cropRect;
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsgstreamerImageGStreamerCairocpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamerCairo.cpp (175369 => 175370)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamerCairo.cpp        2014-10-30 08:02:20 UTC (rev 175369)
+++ trunk/Source/WebCore/platform/graphics/gstreamer/ImageGStreamerCairo.cpp        2014-10-30 08:53:39 UTC (rev 175370)
</span><span class="lines">@@ -32,8 +32,9 @@
</span><span class="cx"> using namespace std;
</span><span class="cx"> using namespace WebCore;
</span><span class="cx"> 
</span><del>-ImageGStreamer::ImageGStreamer(GstBuffer* buffer, GstCaps* caps)
</del><ins>+ImageGStreamer::ImageGStreamer(GstSample* sample)
</ins><span class="cx"> {
</span><ins>+    GstCaps* caps = gst_sample_get_caps(sample);
</ins><span class="cx">     GstVideoInfo videoInfo;
</span><span class="cx">     gst_video_info_init(&amp;videoInfo);
</span><span class="cx">     if (!gst_video_info_from_caps(&amp;videoInfo, caps))
</span><span class="lines">@@ -42,6 +43,7 @@
</span><span class="cx">     // Right now the TextureMapper only supports chromas with one plane
</span><span class="cx">     ASSERT(GST_VIDEO_INFO_N_PLANES(&amp;videoInfo) == 1);
</span><span class="cx"> 
</span><ins>+    GstBuffer* buffer = gst_sample_get_buffer(sample);
</ins><span class="cx">     if (!gst_video_frame_map(&amp;m_videoFrame, &amp;videoInfo, buffer, GST_MAP_READ))
</span><span class="cx">         return;
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsgstreamerMediaPlayerPrivateGStreamerBasecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp (175369 => 175370)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp        2014-10-30 08:02:20 UTC (rev 175369)
+++ trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp        2014-10-30 08:53:39 UTC (rev 175370)
</span><span class="lines">@@ -79,9 +79,9 @@
</span><span class="cx">     player-&gt;muteChanged();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-static void mediaPlayerPrivateRepaintCallback(WebKitVideoSink*, GstBuffer *buffer, MediaPlayerPrivateGStreamerBase* playerPrivate)
</del><ins>+static void mediaPlayerPrivateRepaintCallback(WebKitVideoSink*, GstSample* sample, MediaPlayerPrivateGStreamerBase* playerPrivate)
</ins><span class="cx"> {
</span><del>-    playerPrivate-&gt;triggerRepaint(buffer);
</del><ins>+    playerPrivate-&gt;triggerRepaint(sample);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> MediaPlayerPrivateGStreamerBase::MediaPlayerPrivateGStreamerBase(MediaPlayer* player)
</span><span class="lines">@@ -89,12 +89,12 @@
</span><span class="cx">     , m_fpsSink(0)
</span><span class="cx">     , m_readyState(MediaPlayer::HaveNothing)
</span><span class="cx">     , m_networkState(MediaPlayer::Empty)
</span><del>-    , m_buffer(0)
</del><ins>+    , m_sample(0)
</ins><span class="cx">     , m_repaintHandler(0)
</span><span class="cx">     , m_volumeSignalHandler(0)
</span><span class="cx">     , m_muteSignalHandler(0)
</span><span class="cx"> {
</span><del>-    g_mutex_init(&amp;m_bufferMutex);
</del><ins>+    g_mutex_init(&amp;m_sampleMutex);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> MediaPlayerPrivateGStreamerBase::~MediaPlayerPrivateGStreamerBase()
</span><span class="lines">@@ -104,11 +104,11 @@
</span><span class="cx">         m_repaintHandler = 0;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    g_mutex_clear(&amp;m_bufferMutex);
</del><ins>+    g_mutex_clear(&amp;m_sampleMutex);
</ins><span class="cx"> 
</span><del>-    if (m_buffer)
-        gst_buffer_unref(m_buffer);
-    m_buffer = 0;
</del><ins>+    if (m_sample)
+        gst_sample_unref(m_sample);
+    m_sample = 0;
</ins><span class="cx"> 
</span><span class="cx">     m_player = 0;
</span><span class="cx"> 
</span><span class="lines">@@ -137,7 +137,11 @@
</span><span class="cx">     if (!m_videoSize.isEmpty())
</span><span class="cx">         return m_videoSize;
</span><span class="cx"> 
</span><del>-    GRefPtr&lt;GstCaps&gt; caps = currentVideoSinkCaps();
</del><ins>+    GMutexLocker&lt;GMutex&gt; lock(m_sampleMutex);
+    if (!m_sample)
+        return IntSize();
+
+    GstCaps* caps = gst_sample_get_caps(m_sample);
</ins><span class="cx">     if (!caps)
</span><span class="cx">         return IntSize();
</span><span class="cx"> 
</span><span class="lines">@@ -152,7 +156,7 @@
</span><span class="cx">     int pixelAspectRatioNumerator, pixelAspectRatioDenominator, stride;
</span><span class="cx">     IntSize originalSize;
</span><span class="cx">     GstVideoFormat format;
</span><del>-    if (!getVideoSizeAndFormatFromCaps(caps.get(), originalSize, format, pixelAspectRatioNumerator, pixelAspectRatioDenominator, stride))
</del><ins>+    if (!getVideoSizeAndFormatFromCaps(caps, originalSize, format, pixelAspectRatioNumerator, pixelAspectRatioDenominator, stride))
</ins><span class="cx">         return IntSize();
</span><span class="cx"> 
</span><span class="cx">     LOG_MEDIA_MESSAGE(&quot;Original video size: %dx%d&quot;, originalSize.width(), originalSize.height());
</span><span class="lines">@@ -275,25 +279,26 @@
</span><span class="cx"> #if USE(TEXTURE_MAPPER_GL) &amp;&amp; !USE(COORDINATED_GRAPHICS)
</span><span class="cx"> PassRefPtr&lt;BitmapTexture&gt; MediaPlayerPrivateGStreamerBase::updateTexture(TextureMapper* textureMapper)
</span><span class="cx"> {
</span><del>-    GMutexLocker&lt;GMutex&gt; lock(m_bufferMutex);
-    if (!m_buffer)
</del><ins>+    GMutexLocker&lt;GMutex&gt; lock(m_sampleMutex);
+    if (!m_sample)
</ins><span class="cx">         return nullptr;
</span><span class="cx"> 
</span><del>-    GRefPtr&lt;GstCaps&gt; caps = currentVideoSinkCaps();
</del><ins>+    GstCaps* caps = gst_sample_get_caps(m_sample);
</ins><span class="cx">     if (!caps)
</span><span class="cx">         return nullptr;
</span><span class="cx"> 
</span><span class="cx">     GstVideoInfo videoInfo;
</span><span class="cx">     gst_video_info_init(&amp;videoInfo);
</span><del>-    if (!gst_video_info_from_caps(&amp;videoInfo, caps.get()))
</del><ins>+    if (!gst_video_info_from_caps(&amp;videoInfo, caps))
</ins><span class="cx">         return nullptr;
</span><span class="cx"> 
</span><span class="cx">     IntSize size = IntSize(GST_VIDEO_INFO_WIDTH(&amp;videoInfo), GST_VIDEO_INFO_HEIGHT(&amp;videoInfo));
</span><span class="cx">     RefPtr&lt;BitmapTexture&gt; texture = textureMapper-&gt;acquireTextureFromPool(size, GST_VIDEO_INFO_HAS_ALPHA(&amp;videoInfo) ? BitmapTexture::SupportsAlpha : BitmapTexture::NoFlag);
</span><ins>+    GstBuffer* buffer = gst_sample_get_buffer(m_sample);
</ins><span class="cx"> 
</span><span class="cx"> #if GST_CHECK_VERSION(1, 1, 0)
</span><span class="cx">     GstVideoGLTextureUploadMeta* meta;
</span><del>-    if ((meta = gst_buffer_get_video_gl_texture_upload_meta(m_buffer))) {
</del><ins>+    if ((meta = gst_buffer_get_video_gl_texture_upload_meta(buffer))) {
</ins><span class="cx">         if (meta-&gt;n_textures == 1) { // BRGx &amp; BGRA formats use only one texture.
</span><span class="cx">             const BitmapTextureGL* textureGL = static_cast&lt;const BitmapTextureGL*&gt;(texture.get());
</span><span class="cx">             guint ids[4] = { textureGL-&gt;id(), 0, 0, 0 };
</span><span class="lines">@@ -308,7 +313,7 @@
</span><span class="cx">     ASSERT(GST_VIDEO_INFO_N_PLANES(&amp;videoInfo) == 1);
</span><span class="cx"> 
</span><span class="cx">     GstVideoFrame videoFrame;
</span><del>-    if (!gst_video_frame_map(&amp;videoFrame, &amp;videoInfo, m_buffer, GST_MAP_READ))
</del><ins>+    if (!gst_video_frame_map(&amp;videoFrame, &amp;videoInfo, buffer, GST_MAP_READ))
</ins><span class="cx">         return nullptr;
</span><span class="cx"> 
</span><span class="cx">     int stride = GST_VIDEO_FRAME_PLANE_STRIDE(&amp;videoFrame, 0);
</span><span class="lines">@@ -320,13 +325,15 @@
</span><span class="cx"> }
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><del>-void MediaPlayerPrivateGStreamerBase::triggerRepaint(GstBuffer* buffer)
</del><ins>+void MediaPlayerPrivateGStreamerBase::triggerRepaint(GstSample* sample)
</ins><span class="cx"> {
</span><del>-    g_return_if_fail(GST_IS_BUFFER(buffer));
</del><ins>+    g_return_if_fail(GST_IS_SAMPLE(sample));
</ins><span class="cx"> 
</span><span class="cx">     {
</span><del>-        GMutexLocker&lt;GMutex&gt; lock(m_bufferMutex);
-        gst_buffer_replace(&amp;m_buffer, buffer);
</del><ins>+        GMutexLocker&lt;GMutex&gt; lock(m_sampleMutex);
+        if (m_sample)
+            gst_sample_unref(m_sample);
+        m_sample = gst_sample_ref(sample);
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx"> #if USE(TEXTURE_MAPPER_GL) &amp;&amp; !USE(COORDINATED_GRAPHICS)
</span><span class="lines">@@ -357,15 +364,11 @@
</span><span class="cx">     if (!m_player-&gt;visible())
</span><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    GMutexLocker&lt;GMutex&gt; lock(m_bufferMutex);
-    if (!m_buffer)
</del><ins>+    GMutexLocker&lt;GMutex&gt; lock(m_sampleMutex);
+    if (!m_sample)
</ins><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    GRefPtr&lt;GstCaps&gt; caps = currentVideoSinkCaps();
-    if (!caps)
-        return;
-
-    RefPtr&lt;ImageGStreamer&gt; gstImage = ImageGStreamer::createImage(m_buffer, caps.get());
</del><ins>+    RefPtr&lt;ImageGStreamer&gt; gstImage = ImageGStreamer::createImage(m_sample);
</ins><span class="cx">     if (!gstImage)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><span class="lines">@@ -409,16 +412,6 @@
</span><span class="cx">     return MediaPlayer::Download;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-GRefPtr&lt;GstCaps&gt; MediaPlayerPrivateGStreamerBase::currentVideoSinkCaps() const
-{
-    if (!m_webkitVideoSink)
-        return nullptr;
-
-    GRefPtr&lt;GstCaps&gt; currentCaps;
-    g_object_get(G_OBJECT(m_webkitVideoSink.get()), &quot;current-caps&quot;, &amp;currentCaps.outPtr(), NULL);
-    return currentCaps;
-}
-
</del><span class="cx"> GstElement* MediaPlayerPrivateGStreamerBase::createVideoSink()
</span><span class="cx"> {
</span><span class="cx">     ASSERT(initializeGStreamer());
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsgstreamerMediaPlayerPrivateGStreamerBaseh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.h (175369 => 175370)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.h        2014-10-30 08:02:20 UTC (rev 175369)
+++ trunk/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.h        2014-10-30 08:53:39 UTC (rev 175370)
</span><span class="lines">@@ -36,7 +36,7 @@
</span><span class="cx"> #include &quot;TextureMapperPlatformLayer.h&quot;
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><del>-typedef struct _GstBuffer GstBuffer;
</del><ins>+typedef struct _GstSample GstSample;
</ins><span class="cx"> typedef struct _GstElement GstElement;
</span><span class="cx"> typedef struct _GstMessage GstMessage;
</span><span class="cx"> typedef struct _GstStreamVolume GstStreamVolume;
</span><span class="lines">@@ -77,7 +77,7 @@
</span><span class="cx">     void setSize(const IntSize&amp;);
</span><span class="cx">     void sizeChanged();
</span><span class="cx"> 
</span><del>-    void triggerRepaint(GstBuffer*);
</del><ins>+    void triggerRepaint(GstSample*);
</ins><span class="cx">     void paint(GraphicsContext*, const IntRect&amp;);
</span><span class="cx"> 
</span><span class="cx">     virtual bool hasSingleSecurityOrigin() const { return true; }
</span><span class="lines">@@ -110,7 +110,6 @@
</span><span class="cx"> protected:
</span><span class="cx">     MediaPlayerPrivateGStreamerBase(MediaPlayer*);
</span><span class="cx">     virtual GstElement* createVideoSink();
</span><del>-    GRefPtr&lt;GstCaps&gt; currentVideoSinkCaps() const;
</del><span class="cx"> 
</span><span class="cx">     void setStreamVolumeElement(GstStreamVolume*);
</span><span class="cx">     virtual GstElement* createAudioSink() { return 0; }
</span><span class="lines">@@ -123,8 +122,8 @@
</span><span class="cx">     MediaPlayer::ReadyState m_readyState;
</span><span class="cx">     MediaPlayer::NetworkState m_networkState;
</span><span class="cx">     IntSize m_size;
</span><del>-    GMutex m_bufferMutex;
-    GstBuffer* m_buffer;
</del><ins>+    mutable GMutex m_sampleMutex;
+    GstSample* m_sample;
</ins><span class="cx">     GThreadSafeMainLoopSource m_volumeTimerHandler;
</span><span class="cx">     GThreadSafeMainLoopSource m_muteTimerHandler;
</span><span class="cx">     unsigned long m_repaintHandler;
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsgstreamerVideoSinkGStreamercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/gstreamer/VideoSinkGStreamer.cpp (175369 => 175370)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/gstreamer/VideoSinkGStreamer.cpp        2014-10-30 08:02:20 UTC (rev 175369)
+++ trunk/Source/WebCore/platform/graphics/gstreamer/VideoSinkGStreamer.cpp        2014-10-30 08:53:39 UTC (rev 175370)
</span><span class="lines">@@ -66,30 +66,25 @@
</span><span class="cx">     LAST_SIGNAL
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-enum {
-    PROP_0,
-    PROP_CAPS
-};
-
</del><span class="cx"> static guint webkitVideoSinkSignals[LAST_SIGNAL] = { 0, };
</span><span class="cx"> 
</span><span class="cx"> struct _WebKitVideoSinkPrivate {
</span><span class="cx">     _WebKitVideoSinkPrivate()
</span><span class="cx">     {
</span><del>-        g_mutex_init(&amp;bufferMutex);
</del><ins>+        g_mutex_init(&amp;sampleMutex);
</ins><span class="cx">         g_cond_init(&amp;dataCondition);
</span><span class="cx">         gst_video_info_init(&amp;info);
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     ~_WebKitVideoSinkPrivate()
</span><span class="cx">     {
</span><del>-        g_mutex_clear(&amp;bufferMutex);
</del><ins>+        g_mutex_clear(&amp;sampleMutex);
</ins><span class="cx">         g_cond_clear(&amp;dataCondition);
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    GstBuffer* buffer;
</del><ins>+    GstSample* sample;
</ins><span class="cx">     GThreadSafeMainLoopSource timeoutSource;
</span><del>-    GMutex bufferMutex;
</del><ins>+    GMutex sampleMutex;
</ins><span class="cx">     GCond dataCondition;
</span><span class="cx"> 
</span><span class="cx">     GstVideoInfo info;
</span><span class="lines">@@ -103,7 +98,7 @@
</span><span class="cx">     // everything else isn't running anymore. This will lead
</span><span class="cx">     // to deadlocks because render() holds the stream lock.
</span><span class="cx">     //
</span><del>-    // Protected by the buffer mutex
</del><ins>+    // Protected by the sample mutex
</ins><span class="cx">     bool unlocked;
</span><span class="cx"> };
</span><span class="cx"> 
</span><span class="lines">@@ -114,6 +109,7 @@
</span><span class="cx"> static void webkit_video_sink_init(WebKitVideoSink* sink)
</span><span class="cx"> {
</span><span class="cx">     sink-&gt;priv = G_TYPE_INSTANCE_GET_PRIVATE(sink, WEBKIT_TYPE_VIDEO_SINK, WebKitVideoSinkPrivate);
</span><ins>+    g_object_set(GST_BASE_SINK(sink), &quot;enable-last-sample&quot;, FALSE, NULL);
</ins><span class="cx">     new (sink-&gt;priv) WebKitVideoSinkPrivate();
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -121,17 +117,17 @@
</span><span class="cx"> {
</span><span class="cx">     WebKitVideoSinkPrivate* priv = sink-&gt;priv;
</span><span class="cx"> 
</span><del>-    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;bufferMutex);
-    GstBuffer* buffer = priv-&gt;buffer;
-    priv-&gt;buffer = 0;
</del><ins>+    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;sampleMutex);
+    GstSample* sample = priv-&gt;sample;
+    priv-&gt;sample = 0;
</ins><span class="cx"> 
</span><del>-    if (!buffer || priv-&gt;unlocked || UNLIKELY(!GST_IS_BUFFER(buffer))) {
</del><ins>+    if (!sample || priv-&gt;unlocked || UNLIKELY(!GST_IS_SAMPLE(sample))) {
</ins><span class="cx">         g_cond_signal(&amp;priv-&gt;dataCondition);
</span><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    g_signal_emit(sink, webkitVideoSinkSignals[REPAINT_REQUESTED], 0, buffer);
-    gst_buffer_unref(buffer);
</del><ins>+    g_signal_emit(sink, webkitVideoSinkSignals[REPAINT_REQUESTED], 0, sample);
+    gst_sample_unref(sample);
</ins><span class="cx">     g_cond_signal(&amp;priv-&gt;dataCondition);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -140,17 +136,17 @@
</span><span class="cx">     WebKitVideoSink* sink = WEBKIT_VIDEO_SINK(baseSink);
</span><span class="cx">     WebKitVideoSinkPrivate* priv = sink-&gt;priv;
</span><span class="cx"> 
</span><del>-    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;bufferMutex);
</del><ins>+    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;sampleMutex);
</ins><span class="cx"> 
</span><span class="cx">     if (priv-&gt;unlocked)
</span><span class="cx">         return GST_FLOW_OK;
</span><span class="cx"> 
</span><del>-    priv-&gt;buffer = gst_buffer_ref(buffer);
</del><ins>+    priv-&gt;sample = gst_sample_new(buffer, priv-&gt;currentCaps, 0, 0);
</ins><span class="cx"> 
</span><span class="cx">     // The video info structure is valid only if the sink handled an allocation query.
</span><span class="cx">     GstVideoFormat format = GST_VIDEO_INFO_FORMAT(&amp;priv-&gt;info);
</span><span class="cx">     if (format == GST_VIDEO_FORMAT_UNKNOWN) {
</span><del>-        gst_buffer_unref(buffer);
</del><ins>+        gst_sample_unref(priv-&gt;sample);
</ins><span class="cx">         return GST_FLOW_ERROR;
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="lines">@@ -179,13 +175,12 @@
</span><span class="cx">         GstVideoFrame destinationFrame;
</span><span class="cx"> 
</span><span class="cx">         if (!gst_video_frame_map(&amp;sourceFrame, &amp;priv-&gt;info, buffer, GST_MAP_READ)) {
</span><del>-            gst_buffer_unref(buffer);
</del><ins>+            gst_sample_unref(priv-&gt;sample);
</ins><span class="cx">             gst_buffer_unref(newBuffer);
</span><span class="cx">             return GST_FLOW_ERROR;
</span><span class="cx">         }
</span><span class="cx">         if (!gst_video_frame_map(&amp;destinationFrame, &amp;priv-&gt;info, newBuffer, GST_MAP_WRITE)) {
</span><span class="cx">             gst_video_frame_unmap(&amp;sourceFrame);
</span><del>-            gst_buffer_unref(buffer);
</del><span class="cx">             gst_buffer_unref(newBuffer);
</span><span class="cx">             return GST_FLOW_ERROR;
</span><span class="cx">         }
</span><span class="lines">@@ -215,8 +210,8 @@
</span><span class="cx"> 
</span><span class="cx">         gst_video_frame_unmap(&amp;sourceFrame);
</span><span class="cx">         gst_video_frame_unmap(&amp;destinationFrame);
</span><del>-        gst_buffer_unref(buffer);
-        buffer = priv-&gt;buffer = newBuffer;
</del><ins>+        gst_sample_unref(priv-&gt;sample);
+        priv-&gt;sample = gst_sample_new(newBuffer, priv-&gt;currentCaps, 0, 0);
</ins><span class="cx">     }
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><span class="lines">@@ -227,7 +222,7 @@
</span><span class="cx">     priv-&gt;timeoutSource.schedule(&quot;[WebKit] webkitVideoSinkTimeoutCallback&quot;, std::function&lt;void()&gt;(std::bind(webkitVideoSinkTimeoutCallback, sink)), G_PRIORITY_DEFAULT,
</span><span class="cx">         [sink] { gst_object_unref(sink); });
</span><span class="cx"> 
</span><del>-    g_cond_wait(&amp;priv-&gt;dataCondition, &amp;priv-&gt;bufferMutex);
</del><ins>+    g_cond_wait(&amp;priv-&gt;dataCondition, &amp;priv-&gt;sampleMutex);
</ins><span class="cx">     return GST_FLOW_OK;
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -237,33 +232,15 @@
</span><span class="cx">     G_OBJECT_CLASS(parent_class)-&gt;finalize(object);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-static void webkitVideoSinkGetProperty(GObject* object, guint propertyId, GValue* value, GParamSpec* parameterSpec)
</del><ins>+static void unlockSampleMutex(WebKitVideoSinkPrivate* priv)
</ins><span class="cx"> {
</span><del>-    WebKitVideoSink* sink = WEBKIT_VIDEO_SINK(object);
-    WebKitVideoSinkPrivate* priv = sink-&gt;priv;
</del><ins>+    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;sampleMutex);
</ins><span class="cx"> 
</span><del>-    switch (propertyId) {
-    case PROP_CAPS: {
-        GstCaps* caps = priv-&gt;currentCaps;
-        if (caps)
-            gst_caps_ref(caps);
-        g_value_take_boxed(value, caps);
-        break;
</del><ins>+    if (priv-&gt;sample) {
+        gst_sample_unref(priv-&gt;sample);
+        priv-&gt;sample = 0;
</ins><span class="cx">     }
</span><del>-    default:
-        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propertyId, parameterSpec);
-    }
-}
</del><span class="cx"> 
</span><del>-static void unlockBufferMutex(WebKitVideoSinkPrivate* priv)
-{
-    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;bufferMutex);
-
-    if (priv-&gt;buffer) {
-        gst_buffer_unref(priv-&gt;buffer);
-        priv-&gt;buffer = 0;
-    }
-
</del><span class="cx">     priv-&gt;unlocked = true;
</span><span class="cx"> 
</span><span class="cx">     g_cond_signal(&amp;priv-&gt;dataCondition);
</span><span class="lines">@@ -273,7 +250,7 @@
</span><span class="cx"> {
</span><span class="cx">     WebKitVideoSink* sink = WEBKIT_VIDEO_SINK(baseSink);
</span><span class="cx"> 
</span><del>-    unlockBufferMutex(sink-&gt;priv);
</del><ins>+    unlockSampleMutex(sink-&gt;priv);
</ins><span class="cx"> 
</span><span class="cx">     return GST_CALL_PARENT_WITH_DEFAULT(GST_BASE_SINK_CLASS, unlock, (baseSink), TRUE);
</span><span class="cx"> }
</span><span class="lines">@@ -283,7 +260,7 @@
</span><span class="cx">     WebKitVideoSinkPrivate* priv = WEBKIT_VIDEO_SINK(baseSink)-&gt;priv;
</span><span class="cx"> 
</span><span class="cx">     {
</span><del>-        GMutexLocker&lt;GMutex&gt; lock(priv-&gt;bufferMutex);
</del><ins>+        GMutexLocker&lt;GMutex&gt; lock(priv-&gt;sampleMutex);
</ins><span class="cx">         priv-&gt;unlocked = false;
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="lines">@@ -294,7 +271,7 @@
</span><span class="cx"> {
</span><span class="cx">     WebKitVideoSinkPrivate* priv = WEBKIT_VIDEO_SINK(baseSink)-&gt;priv;
</span><span class="cx"> 
</span><del>-    unlockBufferMutex(priv);
</del><ins>+    unlockSampleMutex(priv);
</ins><span class="cx"> 
</span><span class="cx">     if (priv-&gt;currentCaps) {
</span><span class="cx">         gst_caps_unref(priv-&gt;currentCaps);
</span><span class="lines">@@ -308,7 +285,7 @@
</span><span class="cx"> {
</span><span class="cx">     WebKitVideoSinkPrivate* priv = WEBKIT_VIDEO_SINK(baseSink)-&gt;priv;
</span><span class="cx"> 
</span><del>-    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;bufferMutex);
</del><ins>+    GMutexLocker&lt;GMutex&gt; lock(priv-&gt;sampleMutex);
</ins><span class="cx">     priv-&gt;unlocked = false;
</span><span class="cx">     return TRUE;
</span><span class="cx"> }
</span><span class="lines">@@ -363,7 +340,6 @@
</span><span class="cx">     g_type_class_add_private(klass, sizeof(WebKitVideoSinkPrivate));
</span><span class="cx"> 
</span><span class="cx">     gobjectClass-&gt;finalize = webkitVideoSinkFinalize;
</span><del>-    gobjectClass-&gt;get_property = webkitVideoSinkGetProperty;
</del><span class="cx"> 
</span><span class="cx">     baseSinkClass-&gt;unlock = webkitVideoSinkUnlock;
</span><span class="cx">     baseSinkClass-&gt;unlock_stop = webkitVideoSinkUnlockStop;
</span><span class="lines">@@ -374,9 +350,6 @@
</span><span class="cx">     baseSinkClass-&gt;set_caps = webkitVideoSinkSetCaps;
</span><span class="cx">     baseSinkClass-&gt;propose_allocation = webkitVideoSinkProposeAllocation;
</span><span class="cx"> 
</span><del>-    g_object_class_install_property(gobjectClass, PROP_CAPS,
-        g_param_spec_boxed(&quot;current-caps&quot;, &quot;Current-Caps&quot;, &quot;Current caps&quot;, GST_TYPE_CAPS, G_PARAM_READABLE));
-
</del><span class="cx">     webkitVideoSinkSignals[REPAINT_REQUESTED] = g_signal_new(&quot;repaint-requested&quot;,
</span><span class="cx">             G_TYPE_FROM_CLASS(klass),
</span><span class="cx">             static_cast&lt;GSignalFlags&gt;(G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION),
</span><span class="lines">@@ -386,7 +359,7 @@
</span><span class="cx">             g_cclosure_marshal_generic,
</span><span class="cx">             G_TYPE_NONE, // Return type
</span><span class="cx">             1, // Only one parameter
</span><del>-            GST_TYPE_BUFFER);
</del><ins>+            GST_TYPE_SAMPLE);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> 
</span></span></pre>
</div>
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