| // Copyright 2022 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_PUBLIC_BROWSER_FRAME_RATE_THROTTLING_H_ |
| #define CONTENT_PUBLIC_BROWSER_FRAME_RATE_THROTTLING_H_ |
| |
| #include "base/time/time.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| // Signals the frame sink manager that all current and future frame sinks should |
| // start sending BeginFrames at an interval that is at least as long `interval`. |
| // Because there is a single viz process, which itself contains a single host |
| // frame sink manager, calling this function multiple times from anywhere will |
| // apply the throttling described by the latest call. For instance: |
| // |
| // Foo calling StartThrottlingAllFrameSinks(Hertz(15)); |
| // |
| // followed by |
| // |
| // Bar calling StartThrottlingAllFrameSinks(Hertz(30)); |
| // |
| // Will result in framerate being throttled at 30hz |
| // Should be called from the UI thread. |
| CONTENT_EXPORT void StartThrottlingAllFrameSinks(base::TimeDelta interval); |
| |
| // Stops the BeginFrame throttling enabled by `StartThrottlingAllFrameSinks()`. |
| // Should be called from the UI thread. |
| CONTENT_EXPORT void StopThrottlingAllFrameSinks(); |
| |
| } // namespace content |
| |
| #endif // CONTENT_PUBLIC_BROWSER_FRAME_RATE_THROTTLING_H_ |
