1 #ifndef __DALI_INTERNAL_BASE_VSYNC_MONITOR_INTERFACE_H__
2 #define __DALI_INTERNAL_BASE_VSYNC_MONITOR_INTERFACE_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
34 * Interface for monitoring VSync
35 * Implementations must provide a DoSync method
37 class VSyncMonitorInterface
42 * Initialize the vsync monitor.
44 virtual void Initialize() = 0;
47 * Terminate the vsync monitor
49 virtual void Terminate() = 0;
52 * Checks if hardware syncs are available
53 * @return true if hardware syncs are available
55 virtual bool UseHardware() = 0;
58 * Wait for vertical blank sync.
59 * @param[out] frameNumber The current sequence number for this vsync (increments by one for each vsync)
60 * @param[out] seconds The timestamp (seconds) when the vsync occured
61 * @param[out] microseconds The timestamp (microseconds) when the vsync occured
62 * @return true if a valid sync was detected, false on error
64 virtual bool DoSync( unsigned int& frameNumber, unsigned int& seconds, unsigned int& microseconds ) = 0;
69 * Virtual protected destructor - no deletion through this interface
71 virtual ~VSyncMonitorInterface() {}
73 }; // class VSyncMonitorInterface
75 } // namespace Adaptor
77 } // namespace Internal
81 #endif // __DALI_INTERNAL_BASE_VSYNC_MONITOR_INTERFACE_H__