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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 CHROMECAST_MEDIA_VIDEO_PLANE_CONTROLLER_H_ | 5 #ifndef CHROMECAST_MEDIA_VIDEO_PLANE_CONTROLLER_H_ |
6 #define CHROMECAST_MEDIA_VIDEO_PLANE_CONTROLLER_H_ | 6 #define CHROMECAST_MEDIA_VIDEO_PLANE_CONTROLLER_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "base/memory/ref_counted.h" | 9 #include "base/memory/ref_counted.h" |
10 #include "base/memory/singleton.h" | 10 #include "base/memory/singleton.h" |
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25 // resolution coordinates | 25 // resolution coordinates |
26 // * updates VideoPlane when screen resolution changes | 26 // * updates VideoPlane when screen resolution changes |
27 // * handles threading correctly (posting SetGeometry to media thread). | 27 // * handles threading correctly (posting SetGeometry to media thread). |
28 // * coalesces multiple calls in short space of time to prevent flooding the | 28 // * coalesces multiple calls in short space of time to prevent flooding the |
29 // media thread with SetGeometry calls (which are expensive on many | 29 // media thread with SetGeometry calls (which are expensive on many |
30 // platforms). | 30 // platforms). |
31 // All public methods should be called from the same thread that the class was | 31 // All public methods should be called from the same thread that the class was |
32 // constructed on. | 32 // constructed on. |
33 class VideoPlaneController { | 33 class VideoPlaneController { |
34 public: | 34 public: |
35 explicit VideoPlaneController( | 35 VideoPlaneController( |
| 36 const Size& graphics_resolution, |
36 scoped_refptr<base::SingleThreadTaskRunner> media_task_runner); | 37 scoped_refptr<base::SingleThreadTaskRunner> media_task_runner); |
37 ~VideoPlaneController(); | 38 ~VideoPlaneController(); |
38 // Sets the video plane geometry in *graphics plane coordinates*. If there is | 39 // Sets the video plane geometry in *graphics plane coordinates*. If there is |
39 // no change to video plane parameters from the last call to this method, it | 40 // no change to video plane parameters from the last call to this method, it |
40 // is a no-op. | 41 // is a no-op. |
41 void SetGeometry(const RectF& display_rect, VideoPlane::Transform transform); | 42 void SetGeometry(const RectF& display_rect, VideoPlane::Transform transform); |
42 | 43 |
43 // Sets physical screen resolution. This must be called at least once when | 44 // Sets physical screen resolution. This must be called at least once when |
44 // the final output resolution (HDMI signal or panel resolution) is known, | 45 // the final output resolution (HDMI signal or panel resolution) is known, |
45 // then later when it changes. If there is no change to the screen resolution | 46 // then later when it changes. If there is no change to the screen resolution |
46 // from the last call to this method, it is a no-op. | 47 // from the last call to this method, it is a no-op. |
47 void SetScreenResolution(const Size& resolution); | 48 void SetScreenResolution(const Size& resolution); |
48 | 49 |
49 // Sets graphics hardware plane resolution, and clears any cached video plane | |
50 // geometry parameters. This must be called at least once when the hardware | |
51 // graphics plane resolution (same resolution as display::Screen) is known, | |
52 // then later when it changes. If there is no change to the graphics plane | |
53 // resolution from the last call to this method, it is a no-op. | |
54 void SetGraphicsPlaneResolution(const Size& resolution); | |
55 | |
56 // After Pause is called, no further calls to VideoPlane::SetGeometry will be | 50 // After Pause is called, no further calls to VideoPlane::SetGeometry will be |
57 // made except for any pending calls already scheduled on the media thread. | 51 // made except for any pending calls already scheduled on the media thread. |
58 // The Set methods will however update cached parameters that will take | 52 // The Set methods will however update cached parameters that will take |
59 // effect once the class is resumed. Safe to call multiple times. | 53 // effect once the class is resumed. Safe to call multiple times. |
60 // TODO(esum): Handle the case where there are pending calls already on the | 54 // TODO(esum): Handle the case where there are pending calls already on the |
61 // media thread. When this returns, the caller needs to know that absolutely | 55 // media thread. When this returns, the caller needs to know that absolutely |
62 // no more SetGeometry calls will be made. | 56 // no more SetGeometry calls will be made. |
63 void Pause(); | 57 void Pause(); |
64 // Makes class active again, and clears any cached video plane geometry | 58 // Makes class active again, and clears any cached video plane geometry |
65 // parameters. Safe to call multiple times. | 59 // parameters. Safe to call multiple times. |
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77 // Checks if all data has been collected to make calls to | 71 // Checks if all data has been collected to make calls to |
78 // VideoPlane::SetGeometry. | 72 // VideoPlane::SetGeometry. |
79 bool HaveDataForSetGeometry() const; | 73 bool HaveDataForSetGeometry() const; |
80 // Clears any cached video plane geometry parameters. | 74 // Clears any cached video plane geometry parameters. |
81 void ClearVideoPlaneGeometry(); | 75 void ClearVideoPlaneGeometry(); |
82 | 76 |
83 bool is_paused_; | 77 bool is_paused_; |
84 | 78 |
85 // Current resolutions | 79 // Current resolutions |
86 bool have_screen_res_; | 80 bool have_screen_res_; |
87 bool have_graphics_plane_res_; | |
88 Size screen_res_; | 81 Size screen_res_; |
89 Size graphics_plane_res_; | 82 const Size graphics_plane_res_; |
90 | 83 |
91 // Saved video plane parameters (in graphics plane coordinates) | 84 // Saved video plane parameters (in graphics plane coordinates) |
92 // for use when screen resolution changes. | 85 // for use when screen resolution changes. |
93 bool have_video_plane_geometry_; | 86 bool have_video_plane_geometry_; |
94 RectF video_plane_display_rect_; | 87 RectF video_plane_display_rect_; |
95 VideoPlane::Transform video_plane_transform_; | 88 VideoPlane::Transform video_plane_transform_; |
96 | 89 |
97 scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_; | 90 scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_; |
98 scoped_refptr<RateLimitedSetVideoPlaneGeometry> video_plane_wrapper_; | 91 scoped_refptr<RateLimitedSetVideoPlaneGeometry> video_plane_wrapper_; |
99 | 92 |
100 base::ThreadChecker thread_checker_; | 93 base::ThreadChecker thread_checker_; |
101 | 94 |
102 DISALLOW_COPY_AND_ASSIGN(VideoPlaneController); | 95 DISALLOW_COPY_AND_ASSIGN(VideoPlaneController); |
103 }; | 96 }; |
104 | 97 |
105 } // namespace media | 98 } // namespace media |
106 } // namespace chromecast | 99 } // namespace chromecast |
107 | 100 |
108 #endif // CHROMECAST_MEDIA_VIDEO_PLANE_CONTROLLER_H_ | 101 #endif // CHROMECAST_MEDIA_VIDEO_PLANE_CONTROLLER_H_ |
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