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 Flora License, Version 1.0 (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://floralicense.org/license/
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.
33 * Interface for monitoring VSync
34 * Implementations must provide a DoSync method
36 class VSyncMonitorInterface
41 * Initialize the vsync monitor.
43 virtual void Initialize() = 0;
46 * Terminate the vsync monitor
48 virtual void Terminate() = 0;
51 * Checks if hardware syncs are available
52 * @return true if hardware syncs are available
54 virtual bool UseHardware() = 0;
57 * Wait for vertical blank sync.
58 * @param[out] frameNumber The current sequence number for this vsync (increments by one for each vsync)
59 * @param[out] seconds The timestamp (seconds) when the vsync occured
60 * @param[out] microseconds The timestamp (microseconds) when the vsync occured
61 * @return true if a valid sync was detected, false on error
63 virtual bool DoSync( unsigned int& frameNumber, unsigned int& seconds, unsigned int& microseconds ) = 0;
68 * Virtual protected destructor - no deletion through this interface
70 virtual ~VSyncMonitorInterface() {}
72 }; // class VSyncMonitorInterface
74 } // namespace Adaptor
76 } // namespace Internal
80 #endif // __DALI_INTERNAL_BASE_VSYNC_MONITOR_INTERFACE_H__