1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef STAGEFRIGHT_CODEC2_FENCE_FACTORY_H_ 18 #define STAGEFRIGHT_CODEC2_FENCE_FACTORY_H_ 19 20 21 #include <C2Buffer.h> 22 23 class C2SurfaceSyncMemory; 24 25 /** 26 * C2Fence implementation factory 27 */ 28 struct _C2FenceFactory { 29 30 class SurfaceFenceImpl; 31 class SyncFenceImpl; 32 33 /* 34 * Create C2Fence for BufferQueueBased blockpool. 35 * 36 * \param syncMem Shared memory object for synchronization between processes. 37 * \param waitId wait id for tracking status change for C2Fence. 38 */ 39 static C2Fence CreateSurfaceFence( 40 std::shared_ptr<C2SurfaceSyncMemory> syncMem, 41 uint32_t waitId); 42 43 /* 44 * Create C2Fence from a fence file fd. 45 * 46 * \param fenceFd Fence file descriptor. 47 * It will be owned and closed by the returned fence object. 48 */ 49 static C2Fence CreateSyncFence(int fenceFd); 50 51 /** 52 * Create a native handle from fence for marshalling 53 * 54 * \return a non-null pointer if the fence can be marshalled, otherwise return nullptr 55 */ 56 static native_handle_t* CreateNativeHandle(const C2Fence& fence); 57 58 /* 59 * Create C2Fence from a native handle. 60 61 * \param handle A native handle representing a fence 62 * The fd in the native handle will be duplicated, so the caller will 63 * still own the handle and have to close it. 64 */ 65 static C2Fence CreateFromNativeHandle(const native_handle_t* handle); 66 }; 67 68 69 #endif // STAGEFRIGHT_CODEC2_FENCE_FACTORY_H_ 70