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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 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 UI_GL_SYNC_CONTROL_VSYNC_PROVIDER_H_ | 5 #ifndef UI_GL_SYNC_CONTROL_VSYNC_PROVIDER_H_ |
6 #define UI_GL_SYNC_CONTROL_VSYNC_PROVIDER_H_ | 6 #define UI_GL_SYNC_CONTROL_VSYNC_PROVIDER_H_ |
7 | 7 |
| 8 #include <stdint.h> |
| 9 |
8 #include <queue> | 10 #include <queue> |
9 | 11 |
| 12 #include "base/macros.h" |
10 #include "ui/gfx/vsync_provider.h" | 13 #include "ui/gfx/vsync_provider.h" |
11 | 14 |
12 namespace gfx { | 15 namespace gfx { |
13 | 16 |
14 // Base class for providers based on extensions like GLX_OML_sync_control and | 17 // Base class for providers based on extensions like GLX_OML_sync_control and |
15 // EGL_CHROMIUM_sync_control. | 18 // EGL_CHROMIUM_sync_control. |
16 class SyncControlVSyncProvider : public VSyncProvider { | 19 class SyncControlVSyncProvider : public VSyncProvider { |
17 public: | 20 public: |
18 SyncControlVSyncProvider(); | 21 SyncControlVSyncProvider(); |
19 ~SyncControlVSyncProvider() override; | 22 ~SyncControlVSyncProvider() override; |
20 | 23 |
21 void GetVSyncParameters(const UpdateVSyncCallback& callback) override; | 24 void GetVSyncParameters(const UpdateVSyncCallback& callback) override; |
22 | 25 |
23 protected: | 26 protected: |
24 virtual bool GetSyncValues(int64* system_time, | 27 virtual bool GetSyncValues(int64_t* system_time, |
25 int64* media_stream_counter, | 28 int64_t* media_stream_counter, |
26 int64* swap_buffer_counter) = 0; | 29 int64_t* swap_buffer_counter) = 0; |
27 | 30 |
28 virtual bool GetMscRate(int32* numerator, int32* denominator) = 0; | 31 virtual bool GetMscRate(int32_t* numerator, int32_t* denominator) = 0; |
29 | 32 |
30 private: | 33 private: |
31 base::TimeTicks last_timebase_; | 34 base::TimeTicks last_timebase_; |
32 uint64 last_media_stream_counter_; | 35 uint64_t last_media_stream_counter_; |
33 base::TimeDelta last_good_interval_; | 36 base::TimeDelta last_good_interval_; |
34 bool invalid_msc_; | 37 bool invalid_msc_; |
35 | 38 |
36 // A short history of the last few computed intervals. | 39 // A short history of the last few computed intervals. |
37 // We use this to filter out the noise in the computation resulting | 40 // We use this to filter out the noise in the computation resulting |
38 // from configuration change (monitor reconfiguration, moving windows | 41 // from configuration change (monitor reconfiguration, moving windows |
39 // between monitors, suspend and resume, etc.). | 42 // between monitors, suspend and resume, etc.). |
40 std::queue<base::TimeDelta> last_computed_intervals_; | 43 std::queue<base::TimeDelta> last_computed_intervals_; |
41 | 44 |
42 DISALLOW_COPY_AND_ASSIGN(SyncControlVSyncProvider); | 45 DISALLOW_COPY_AND_ASSIGN(SyncControlVSyncProvider); |
43 }; | 46 }; |
44 | 47 |
45 } // namespace gfx | 48 } // namespace gfx |
46 | 49 |
47 #endif // UI_GL_SYNC_CONTROL_VSYNC_PROVIDER_H_ | 50 #endif // UI_GL_SYNC_CONTROL_VSYNC_PROVIDER_H_ |
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