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-rw-r--r--webkit/media/skcanvas_video_renderer.h46
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+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WEBKIT_MEDIA_SKCANVAS_VIDEO_RENDERER_H_
+#define WEBKIT_MEDIA_SKCANVAS_VIDEO_RENDERER_H_
+
+#include "base/time.h"
+#include "ui/gfx/rect.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+class SkCanvas;
+
+namespace media {
+class VideoFrame;
+}
+
+namespace webkit_media {
+
+// Handles rendering of VideoFrames to SkCanvases, doing any necessary YUV
+// conversion and caching of resulting RGB bitmaps.
+class SkCanvasVideoRenderer {
+ public:
+ SkCanvasVideoRenderer();
+ ~SkCanvasVideoRenderer();
+
+ // Paints |video_frame| on |canvas|, scaling the result to fit dimensions
+ // specified by |dest_rect|.
+ //
+ // Black will be painted on |canvas| if |video_frame| is null.
+ void Paint(media::VideoFrame* video_frame,
+ SkCanvas* canvas,
+ const gfx::Rect& dest_rect);
+
+ private:
+ // An RGB bitmap and corresponding timestamp of the previously converted
+ // video frame data.
+ SkBitmap last_frame_;
+ base::TimeDelta last_frame_timestamp_;
+
+ DISALLOW_COPY_AND_ASSIGN(SkCanvasVideoRenderer);
+};
+
+} // namespace webkit_media
+
+#endif // WEBKIT_MEDIA_SKCANVAS_VIDEO_RENDERER_H_