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| 1 // Copyright (c) 2012 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_MEDIA_SKCANVAS_VIDEO_RENDERER_H_ | |
| 6 #define WEBKIT_MEDIA_SKCANVAS_VIDEO_RENDERER_H_ | |
| 7 | |
| 8 #include "base/time.h" | |
| 9 #include "ui/gfx/rect.h" | |
| 10 #include "third_party/skia/include/core/SkBitmap.h" | |
| 11 | |
| 12 class SkCanvas; | |
| 13 | |
| 14 namespace media { | |
| 15 class VideoFrame; | |
| 16 } | |
| 17 | |
| 18 namespace webkit_media { | |
| 19 | |
| 20 // Handles rendering of VideoFrames to SkCanvases, doing any necessary YUV | |
| 21 // conversion and caching of resulting RGB bitmaps. | |
| 22 class SkCanvasVideoRenderer { | |
| 23 public: | |
| 24 SkCanvasVideoRenderer(); | |
| 25 ~SkCanvasVideoRenderer(); | |
| 26 | |
| 27 // Paints |video_frame| on |canvas|, scaling the result to fit dimensions | |
| 28 // specified by |dest_rect|. | |
| 29 // | |
| 30 // Black will be painted on |canvas| if |video_frame| is null. | |
| 31 void Paint(media::VideoFrame* video_frame, | |
| 32 SkCanvas* canvas, | |
| 33 const gfx::Rect& dest_rect, | |
| 34 uint8_t alpha); | |
| 35 | |
| 36 private: | |
| 37 // An RGB bitmap and corresponding timestamp of the previously converted | |
| 38 // video frame data. | |
| 39 SkBitmap last_frame_; | |
| 40 base::TimeDelta last_frame_timestamp_; | |
| 41 | |
| 42 DISALLOW_COPY_AND_ASSIGN(SkCanvasVideoRenderer); | |
| 43 }; | |
| 44 | |
| 45 } // namespace webkit_media | |
| 46 | |
| 47 #endif // WEBKIT_MEDIA_SKCANVAS_VIDEO_RENDERER_H_ | |
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