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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_ | 5 #ifndef MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_ |
6 #define MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_ | 6 #define MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_ |
7 | 7 |
8 #include "base/callback_forward.h" | 8 #include "base/callback_forward.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 #include "media/base/media_export.h" | 10 #include "media/capture/capture_export.h" |
11 #include "media/capture/content/animated_content_sampler.h" | 11 #include "media/capture/content/animated_content_sampler.h" |
12 #include "media/capture/content/capture_resolution_chooser.h" | 12 #include "media/capture/content/capture_resolution_chooser.h" |
13 #include "media/capture/content/feedback_signal_accumulator.h" | 13 #include "media/capture/content/feedback_signal_accumulator.h" |
14 #include "media/capture/content/smooth_event_sampler.h" | 14 #include "media/capture/content/smooth_event_sampler.h" |
15 #include "ui/gfx/geometry/rect.h" | 15 #include "ui/gfx/geometry/rect.h" |
16 | 16 |
17 namespace media { | 17 namespace media { |
18 | 18 |
19 // VideoCaptureOracle manages the producer-side throttling of captured frames | 19 // VideoCaptureOracle manages the producer-side throttling of captured frames |
20 // from a video capture device. It is informed of every update by the device; | 20 // from a video capture device. It is informed of every update by the device; |
21 // this empowers it to look into the future and decide if a particular frame | 21 // this empowers it to look into the future and decide if a particular frame |
22 // ought to be captured in order to achieve its target frame rate. | 22 // ought to be captured in order to achieve its target frame rate. |
23 class MEDIA_EXPORT VideoCaptureOracle { | 23 class CAPTURE_EXPORT VideoCaptureOracle { |
24 public: | 24 public: |
25 enum Event { | 25 enum Event { |
26 kCompositorUpdate, | 26 kCompositorUpdate, |
27 kActiveRefreshRequest, | 27 kActiveRefreshRequest, |
28 kPassiveRefreshRequest, | 28 kPassiveRefreshRequest, |
29 kMouseCursorUpdate, | 29 kMouseCursorUpdate, |
30 kNumEvents, | 30 kNumEvents, |
31 }; | 31 }; |
32 | 32 |
33 VideoCaptureOracle(base::TimeDelta min_capture_period, | 33 VideoCaptureOracle(base::TimeDelta min_capture_period, |
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196 | 196 |
197 // The timestamp of the frame where |content_sampler_| last detected | 197 // The timestamp of the frame where |content_sampler_| last detected |
198 // animation. This determines whether capture size increases will be | 198 // animation. This determines whether capture size increases will be |
199 // aggressive (because content is not animating). | 199 // aggressive (because content is not animating). |
200 base::TimeTicks last_time_animation_was_detected_; | 200 base::TimeTicks last_time_animation_was_detected_; |
201 }; | 201 }; |
202 | 202 |
203 } // namespace media | 203 } // namespace media |
204 | 204 |
205 #endif // MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_ | 205 #endif // MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_ |
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