Don't send a SHChangeNotify for creating an app icon when creating a shortcut.
[chromium-blink-merge.git] / media / blink / skcanvas_video_renderer.h
blob9b75cd01e0fad04c242dd1463c73c6142e853845
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.
5 #ifndef MEDIA_BLINK_SKCANVAS_VIDEO_RENDERER_H_
6 #define MEDIA_BLINK_SKCANVAS_VIDEO_RENDERER_H_
8 #include "base/memory/ref_counted.h"
9 #include "base/time/time.h"
10 #include "base/timer/timer.h"
11 #include "media/base/media_export.h"
12 #include "media/base/video_rotation.h"
13 #include "media/filters/context_3d.h"
14 #include "third_party/skia/include/core/SkBitmap.h"
15 #include "third_party/skia/include/core/SkXfermode.h"
16 #include "ui/gfx/geometry/rect.h"
18 class SkCanvas;
20 namespace media {
22 class VideoFrame;
23 class VideoImageGenerator;
25 // Handles rendering of VideoFrames to SkCanvases, doing any necessary YUV
26 // conversion and caching of resulting RGB bitmaps.
27 class MEDIA_EXPORT SkCanvasVideoRenderer {
28 public:
29 SkCanvasVideoRenderer();
30 ~SkCanvasVideoRenderer();
32 // Paints |video_frame| on |canvas|, scaling and rotating the result to fit
33 // dimensions specified by |dest_rect|.
34 // If the format of |video_frame| is VideoFrame::NATIVE_TEXTURE, |context_3d|
35 // must be provided.
37 // Black will be painted on |canvas| if |video_frame| is null.
38 void Paint(const scoped_refptr<VideoFrame>& video_frame,
39 SkCanvas* canvas,
40 const gfx::RectF& dest_rect,
41 uint8 alpha,
42 SkXfermode::Mode mode,
43 VideoRotation video_rotation,
44 const Context3D& context_3d);
46 // Copy |video_frame| on |canvas|.
47 // If the format of |video_frame| is VideoFrame::NATIVE_TEXTURE, |context_3d|
48 // must be provided.
49 void Copy(const scoped_refptr<VideoFrame>& video_frame,
50 SkCanvas* canvas,
51 const Context3D& context_3d);
53 // Convert the contents of |video_frame| to raw RGB pixels. |rgb_pixels|
54 // should point into a buffer large enough to hold as many 32 bit RGBA pixels
55 // as are in the visible_rect() area of the frame.
56 static void ConvertVideoFrameToRGBPixels(
57 const scoped_refptr<media::VideoFrame>& video_frame,
58 void* rgb_pixels,
59 size_t row_bytes);
61 // Copy the contents of texture of |video_frame| to texture |texture|.
62 // |level|, |internal_format|, |type| specify target texture |texture|.
63 // The format of |video_frame| must be VideoFrame::NATIVE_TEXTURE.
64 static void CopyVideoFrameTextureToGLTexture(gpu::gles2::GLES2Interface* gl,
65 VideoFrame* video_frame,
66 unsigned int texture,
67 unsigned int internal_format,
68 unsigned int type,
69 bool premultiply_alpha,
70 bool flip_y);
72 private:
73 void ResetLastFrame();
74 void ResetAcceleratedLastFrame();
76 // An RGB bitmap and corresponding timestamp of the previously converted
77 // video frame data by software color space conversion.
78 SkBitmap last_frame_;
79 base::TimeDelta last_frame_timestamp_;
80 // If |last_frame_| is not used for a while, it's deleted to save memory.
81 base::DelayTimer<SkCanvasVideoRenderer> frame_deleting_timer_;
83 // This is a hardware accelerated copy of the frame generated by
84 // |accelerated_generator_|.
85 // It's used when |canvas| parameter in Paint() is Ganesh canvas.
86 // Note: all GrContext in SkCanvas instances are same.
87 SkBitmap accelerated_last_frame_;
88 VideoImageGenerator* accelerated_generator_;
89 base::TimeDelta accelerated_last_frame_timestamp_;
90 base::DelayTimer<SkCanvasVideoRenderer> accelerated_frame_deleting_timer_;
92 DISALLOW_COPY_AND_ASSIGN(SkCanvasVideoRenderer);
95 } // namespace media
97 #endif // MEDIA_BLINK_SKCANVAS_VIDEO_RENDERER_H_