1 /* 2 * Copyright (c) 2015, 2019-2020, The Linux Foundation. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 31 #ifndef __HWC_BUFFER_SYNC_HANDLER_H__ 32 #define __HWC_BUFFER_SYNC_HANDLER_H__ 33 34 #include <sys/mman.h> 35 #include <fcntl.h> 36 #include <core/sdm_types.h> 37 #include <core/buffer_sync_handler.h> 38 39 namespace sdm { 40 41 class HWCBufferSyncHandler : public BufferSyncHandler { 42 public: 43 virtual DisplayError SyncWait(int fd); 44 virtual DisplayError SyncWait(int fd, int timeout); 45 virtual DisplayError SyncMerge(int fd1, int fd2, int *merged_fd); 46 virtual bool IsSyncSignaled(int fd); 47 virtual void GetSyncInfo(int fd, std::ostringstream *os); 48 49 private: 50 HWCBufferSyncHandler(); 51 52 static HWCBufferSyncHandler g_hwc_buffer_sync_handler_; 53 }; 54 55 } // namespace sdm 56 #endif // __HWC_BUFFER_SYNC_HANDLER_H__ 57