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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_ | 5 #ifndef MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_ |
6 #define MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_ | 6 #define MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_ |
7 | 7 |
8 #include "base/memory/ref_counted.h" | 8 #include "base/memory/ref_counted.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 #include "base/timer/timer.h" | 10 #include "base/timer/timer.h" |
11 #include "media/base/media_export.h" | 11 #include "media/base/media_export.h" |
12 #include "media/base/video_rotation.h" | 12 #include "media/base/video_rotation.h" |
13 #include "media/filters/context_3d_provider.h" | |
13 #include "third_party/skia/include/core/SkBitmap.h" | 14 #include "third_party/skia/include/core/SkBitmap.h" |
15 #include "third_party/skia/include/core/SkCanvas.h" | |
14 #include "third_party/skia/include/core/SkXfermode.h" | 16 #include "third_party/skia/include/core/SkXfermode.h" |
15 #include "ui/gfx/rect.h" | 17 #include "ui/gfx/rect.h" |
16 | 18 |
17 class SkCanvas; | |
18 | |
19 namespace media { | 19 namespace media { |
20 | 20 |
21 class VideoFrame; | 21 class VideoFrame; |
22 class VideoImageGenerator; | 22 class VideoImageGenerator; |
23 | 23 |
24 // Handles rendering of VideoFrames to SkCanvases, doing any necessary YUV | 24 // Handles rendering of VideoFrames to SkCanvases, doing any necessary YUV |
25 // conversion and caching of resulting RGB bitmaps. | 25 // conversion and caching of resulting RGB bitmaps. |
26 class MEDIA_EXPORT SkCanvasVideoRenderer { | 26 class MEDIA_EXPORT SkCanvasVideoRenderer { |
27 public: | 27 public: |
28 SkCanvasVideoRenderer(); | 28 SkCanvasVideoRenderer(); |
29 ~SkCanvasVideoRenderer(); | 29 ~SkCanvasVideoRenderer(); |
30 | 30 |
31 // Paints |video_frame| on |canvas|, scaling and rotating the result to fit | 31 // Paints |video_frame| on |canvas|, scaling and rotating the result to fit |
32 // dimensions specified by |dest_rect|. | 32 // dimensions specified by |dest_rect|. |
33 // | 33 // |
34 // Black will be painted on |canvas| if |video_frame| is null. | 34 // Black will be painted on |canvas| if |video_frame| is null. |
35 void Paint(const scoped_refptr<VideoFrame>& video_frame, | 35 void Paint(const scoped_refptr<VideoFrame>& video_frame, |
36 SkCanvas* canvas, | 36 SkCanvas* canvas, |
37 const gfx::RectF& dest_rect, | 37 const gfx::RectF& dest_rect, |
38 uint8 alpha, | 38 uint8 alpha, |
39 SkXfermode::Mode mode, | 39 SkXfermode::Mode mode, |
40 VideoRotation video_rotation); | 40 VideoRotation video_rotation, |
41 const Context3DProvider& context_provider); | |
41 | 42 |
42 // Copy |video_frame| on |canvas|. | 43 // Copy |video_frame| on |canvas|. |
43 void Copy(const scoped_refptr<VideoFrame>&, SkCanvas* canvas); | 44 void Copy(const scoped_refptr<VideoFrame>&, SkCanvas* canvas); |
44 | 45 |
46 static void CopyVideoFrameTextureToGLTexture(gpu::gles2::GLES2Interface* gl, | |
scherkus (not reviewing)
2014/10/30 20:40:13
can we get documentation?
for example, it'd be go
dshwang
2014/10/31 09:29:17
Done.
| |
47 media::VideoFrame* video_frame, | |
scherkus (not reviewing)
2014/10/30 20:40:13
nit: typically we pass these as const-ref (you can
danakj
2014/10/30 21:04:20
If you don't need a reference, passing a T* is mor
dshwang
2014/10/31 09:29:17
I preserve T* because it doesn't need to take a re
| |
48 unsigned int texture, | |
49 unsigned int level, | |
50 unsigned int internal_format, | |
51 unsigned int type, | |
52 bool premultiply_alpha, | |
53 bool flip_y); | |
54 | |
45 private: | 55 private: |
46 void ResetLastFrame(); | 56 void ResetLastFrame(); |
47 void ResetAcceleratedLastFrame(); | 57 void ResetAcceleratedLastFrame(); |
48 | 58 |
49 // An RGB bitmap and corresponding timestamp of the previously converted | 59 // An RGB bitmap and corresponding timestamp of the previously converted |
50 // video frame data by software color space conversion. | 60 // video frame data by software color space conversion. |
51 SkBitmap last_frame_; | 61 SkBitmap last_frame_; |
52 base::TimeDelta last_frame_timestamp_; | 62 base::TimeDelta last_frame_timestamp_; |
53 // If |last_frame_| is not used for a while, it's deleted to save memory. | 63 // If |last_frame_| is not used for a while, it's deleted to save memory. |
54 base::DelayTimer<SkCanvasVideoRenderer> frame_deleting_timer_; | 64 base::DelayTimer<SkCanvasVideoRenderer> frame_deleting_timer_; |
55 | 65 |
56 // This is a hardware accelerated copy of the frame generated by | 66 // This is a hardware accelerated copy of the frame generated by |
57 // |accelerated_generator_|. | 67 // |accelerated_generator_|. |
58 // It's used when |canvas| parameter in Paint() is Ganesh canvas. | 68 // It's used when |canvas| parameter in Paint() is Ganesh canvas. |
59 // Note: all GrContext in SkCanvas instances are same. | 69 // Note: all GrContext in SkCanvas instances are same. |
60 SkBitmap accelerated_last_frame_; | 70 SkBitmap accelerated_last_frame_; |
61 VideoImageGenerator* accelerated_generator_; | 71 VideoImageGenerator* accelerated_generator_; |
62 base::TimeDelta accelerated_last_frame_timestamp_; | 72 base::TimeDelta accelerated_last_frame_timestamp_; |
63 base::DelayTimer<SkCanvasVideoRenderer> accelerated_frame_deleting_timer_; | 73 base::DelayTimer<SkCanvasVideoRenderer> accelerated_frame_deleting_timer_; |
64 | 74 |
65 DISALLOW_COPY_AND_ASSIGN(SkCanvasVideoRenderer); | 75 DISALLOW_COPY_AND_ASSIGN(SkCanvasVideoRenderer); |
66 }; | 76 }; |
67 | 77 |
68 } // namespace media | 78 } // namespace media |
69 | 79 |
70 #endif // MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_ | 80 #endif // MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_ |
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