1 /* 2 * Copyright (c) 2016-2017, 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 #ifndef __HWC_CALLBACKS_H__ 31 #define __HWC_CALLBACKS_H__ 32 33 #define HWC2_INCLUDE_STRINGIFICATION 34 #define HWC2_USE_CPP11 35 #include <hardware/hwcomposer2.h> 36 #undef HWC2_INCLUDE_STRINGIFICATION 37 #undef HWC2_USE_CPP11 38 39 #include <mutex> 40 41 namespace sdm { 42 43 class HWCCallbacks { 44 public: 45 void Hotplug(hwc2_display_t display, HWC2::Connection state); 46 void Refresh(hwc2_display_t display); 47 void Vsync(hwc2_display_t display, int64_t timestamp); 48 HWC2::Error Register(HWC2::Callback, hwc2_callback_data_t callback_data, 49 hwc2_function_pointer_t pointer); 50 VsyncCallbackRegistered()51 bool VsyncCallbackRegistered() { return (vsync_ != nullptr && vsync_data_ != nullptr); } 52 53 private: 54 hwc2_callback_data_t hotplug_data_ = nullptr; 55 hwc2_callback_data_t refresh_data_ = nullptr; 56 hwc2_callback_data_t vsync_data_ = nullptr; 57 58 HWC2_PFN_HOTPLUG hotplug_ = nullptr; 59 HWC2_PFN_REFRESH refresh_ = nullptr; 60 HWC2_PFN_VSYNC vsync_ = nullptr; 61 62 std::mutex hotplug_mutex_; 63 std::mutex refresh_mutex_; 64 std::mutex vsync_mutex_; 65 }; 66 67 } // namespace sdm 68 69 #endif // __HWC_CALLBACKS_H__ 70