1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef WEBKIT_GLUE_MEDIA_WEB_VIDEO_RENDERER_H_
6#define WEBKIT_GLUE_MEDIA_WEB_VIDEO_RENDERER_H_
7
8#include "media/base/video_frame.h"
9#include "media/filters/video_renderer_base.h"
10#include "webkit/glue/webmediaplayer_impl.h"
11
12namespace webkit_glue {
13
14// A specialized version of a VideoRenderer designed to be used inside WebKit.
15class WebVideoRenderer : public media::VideoRendererBase {
16 public:
17  WebVideoRenderer() : media::VideoRendererBase() {}
18  virtual ~WebVideoRenderer() {}
19
20  // Saves the reference to WebMediaPlayerImpl::Proxy.
21  virtual void SetWebMediaPlayerImplProxy(WebMediaPlayerImpl::Proxy* proxy) = 0;
22
23  // This method is called with the same rect as the Paint() method and could
24  // be used by future implementations to implement an improved color space +
25  // scale code on a separate thread.  Since we always do the stretch on the
26  // same thread as the Paint method, we just ignore the call for now.
27  //
28  // Method called on the render thread.
29  virtual void SetRect(const gfx::Rect& rect) = 0;
30
31  // Paint the current front frame on the |canvas| stretching it to fit the
32  // |dest_rect|.
33  //
34  // Method called on the render thread.
35  virtual void Paint(SkCanvas* canvas,
36                     const gfx::Rect& dest_rect) = 0;
37
38  // Clients of this class (painter/compositor) should use GetCurrentFrame()
39  // obtain ownership of VideoFrame, it should always relinquish the ownership
40  // by use PutCurrentFrame(). Current frame is not guaranteed to be non-NULL.
41  // It expects clients to use color-fill the background if current frame
42  // is NULL. This could happen when before pipeline is pre-rolled or during
43  // pause/flush/seek.
44  virtual void GetCurrentFrame(scoped_refptr<media::VideoFrame>* frame_out) {}
45  virtual void PutCurrentFrame(scoped_refptr<media::VideoFrame> frame) {}
46
47 private:
48  DISALLOW_COPY_AND_ASSIGN(WebVideoRenderer);
49};
50
51}  // namespace webkit_glue
52
53#endif  // WEBKIT_GLUE_MEDIA_WEB_VIDEO_RENDERER_H_
54