1 /* 2 * Copyright (C) 2017 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 CAMERA_COMMON_1_0_HANDLEIMPORTED_H 18 #define CAMERA_COMMON_1_0_HANDLEIMPORTED_H 19 20 #include <utils/Mutex.h> 21 #include <android/hardware/graphics/mapper/2.0/IMapper.h> 22 #include <android/hardware/graphics/mapper/3.0/IMapper.h> 23 #include <cutils/native_handle.h> 24 25 using android::hardware::graphics::mapper::V2_0::IMapper; 26 using android::hardware::graphics::mapper::V2_0::YCbCrLayout; 27 28 namespace android { 29 namespace hardware { 30 namespace camera { 31 namespace common { 32 namespace V1_0 { 33 namespace helper { 34 35 // Borrowed from graphics HAL. Use this until gralloc mapper HAL is working 36 class HandleImporter { 37 public: 38 HandleImporter(); 39 40 // In IComposer, any buffer_handle_t is owned by the caller and we need to 41 // make a clone for hwcomposer2. We also need to translate empty handle 42 // to nullptr. This function does that, in-place. 43 bool importBuffer(buffer_handle_t& handle); 44 void freeBuffer(buffer_handle_t handle); 45 bool importFence(const native_handle_t* handle, int& fd) const; 46 void closeFence(int fd) const; 47 48 // Assume caller has done waiting for acquire fences 49 void* lock(buffer_handle_t& buf, uint64_t cpuUsage, size_t size); 50 51 // Assume caller has done waiting for acquire fences 52 YCbCrLayout lockYCbCr(buffer_handle_t& buf, uint64_t cpuUsage, 53 const IMapper::Rect& accessRegion); 54 55 int unlock(buffer_handle_t& buf); // returns release fence 56 57 private: 58 void initializeLocked(); 59 void cleanup(); 60 61 template<class M, class E> 62 bool importBufferInternal(const sp<M> mapper, buffer_handle_t& handle); 63 template<class M, class E> 64 YCbCrLayout lockYCbCrInternal(const sp<M> mapper, buffer_handle_t& buf, uint64_t cpuUsage, 65 const IMapper::Rect& accessRegion); 66 template<class M, class E> 67 int unlockInternal(const sp<M> mapper, buffer_handle_t& buf); 68 69 Mutex mLock; 70 bool mInitialized; 71 sp<IMapper> mMapperV2; 72 sp<graphics::mapper::V3_0::IMapper> mMapperV3; 73 }; 74 75 } // namespace helper 76 } // namespace V1_0 77 } // namespace common 78 } // namespace camera 79 } // namespace hardware 80 } // namespace android 81 82 #endif // CAMERA_COMMON_1_0_HANDLEIMPORTED_H 83