• Home
  • History
  • Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 <cutils/native_handle.h>
23 
24 using android::hardware::graphics::mapper::V2_0::IMapper;
25 using android::hardware::graphics::mapper::V2_0::YCbCrLayout;
26 
27 namespace android {
28 namespace hardware {
29 namespace camera {
30 namespace common {
31 namespace V1_0 {
32 namespace helper {
33 
34 // Borrowed from graphics HAL. Use this until gralloc mapper HAL is working
35 class HandleImporter {
36 public:
37     HandleImporter();
38 
39     // In IComposer, any buffer_handle_t is owned by the caller and we need to
40     // make a clone for hwcomposer2.  We also need to translate empty handle
41     // to nullptr.  This function does that, in-place.
42     bool importBuffer(buffer_handle_t& handle);
43     void freeBuffer(buffer_handle_t handle);
44     bool importFence(const native_handle_t* handle, int& fd) const;
45     void closeFence(int fd) const;
46 
47     // Assume caller has done waiting for acquire fences
48     void* lock(buffer_handle_t& buf, uint64_t cpuUsage, size_t size);
49 
50     // Assume caller has done waiting for acquire fences
51     YCbCrLayout lockYCbCr(buffer_handle_t& buf, uint64_t cpuUsage,
52                           const IMapper::Rect& accessRegion);
53 
54     int unlock(buffer_handle_t& buf); // returns release fence
55 
56 private:
57     void initializeLocked();
58     void cleanup();
59 
60     Mutex mLock;
61     bool mInitialized;
62     sp<IMapper> mMapper;
63 
64 };
65 
66 } // namespace helper
67 } // namespace V1_0
68 } // namespace common
69 } // namespace camera
70 } // namespace hardware
71 } // namespace android
72 
73 #endif // CAMERA_COMMON_1_0_HANDLEIMPORTED_H
74