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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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