Home | History | Annotate | Download | only in include 
      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