| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_SHELL_PLATFORM_DARWIN_IOS_FRAMEWORK_SOURCE_VSYNC_WAITER_IOS_H_ |
| #define FLUTTER_SHELL_PLATFORM_DARWIN_IOS_FRAMEWORK_SOURCE_VSYNC_WAITER_IOS_H_ |
| |
| #include "flutter/fml/macros.h" |
| #include "flutter/fml/memory/weak_ptr.h" |
| #include "flutter/fml/platform/darwin/scoped_nsobject.h" |
| #include "flutter/shell/common/vsync_waiter.h" |
| |
| @interface DisplayLinkManager : NSObject |
| |
| //------------------------------------------------------------------------------ |
| /// @brief The display refresh rate used for reporting purposes. The engine does not care |
| /// about this for frame scheduling. It is only used by tools for instrumentation. The |
| /// engine uses the duration field of the link per frame for frame scheduling. |
| /// |
| /// @attention Do not use the this call in frame scheduling. It is only meant for reporting. |
| /// |
| /// @return The refresh rate in frames per second. |
| /// |
| + (double)displayRefreshRate; |
| |
| @end |
| |
| @interface VSyncClient : NSObject |
| |
| - (instancetype)initWithTaskRunner:(fml::RefPtr<fml::TaskRunner>)task_runner |
| callback:(flutter::VsyncWaiter::Callback)callback; |
| |
| - (void)await; |
| |
| - (void)invalidate; |
| |
| @end |
| |
| namespace flutter { |
| |
| class VsyncWaiterIOS final : public VsyncWaiter { |
| public: |
| VsyncWaiterIOS(flutter::TaskRunners task_runners); |
| |
| ~VsyncWaiterIOS() override; |
| |
| private: |
| fml::scoped_nsobject<VSyncClient> client_; |
| |
| // |VsyncWaiter| |
| void AwaitVSync() override; |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(VsyncWaiterIOS); |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_SHELL_PLATFORM_DARWIN_IOS_FRAMEWORK_SOURCE_VSYNC_WAITER_IOS_H_ |