Implemented way to share video frames between WebKit and Chromium

third_party/WebKit/WebCore/platform/graphics/chromium/VideoLayerChromium.h

+/*
+ * Copyright (C) 2010 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef VideoLayerChromium_h
+#define VideoLayerChromium_h
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "LayerChromium.h"
+#include "VideoFrameChromium.h"
+#include "VideoFrameProvider.h"
+
+namespace WebCore {
+
+// A Layer that contains a Video element.
+class VideoLayerChromium : public LayerChromium {
+public:
+    static PassRefPtr<VideoLayerChromium> create(GraphicsLayerChromium* owner = 0,
+                                                 VideoFrameProvider* provider = 0);
+    virtual bool drawsContent() { return true; }
+    virtual void updateTextureContents(unsigned textureId);
+
+private:
+    VideoLayerChromium(GraphicsLayerChromium* owner, VideoFrameProvider* provider);
+    void createTextureRect(VideoFrameChromium* frame, const IntSize& requiredTextureSize, const IntRect& updateRect, unsigned textureId);
+    void updateTextureRect(VideoFrameChromium* frame, const IntRect& updateRect, unsigned textureId);
+    void updateCompleted();
+
+    unsigned m_allocatedTextureId;
+    IntSize m_allocatedTextureSize;
+    OwnPtr<VideoFrameProvider> m_provider;
+};
+
+}
+#endif // USE(ACCELERATED_COMPOSITING)
+
+#endif