1 /*
2  * Copyright (C) 2019 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 HARDWARE_GOOGLE_CAMERA_HAL_UTILS_HAL_BUFFER_ALLOCATOR_H
18 #define HARDWARE_GOOGLE_CAMERA_HAL_UTILS_HAL_BUFFER_ALLOCATOR_H
19 
20 #include "hal_types.h"
21 
22 #include <utils/Errors.h>
23 #include <vector>
24 
25 namespace android {
26 namespace google_camera_hal {
27 
28 // IHalBufferAllocator defines an interface for HAL to allocate HW accessible
29 // buffers
30 class IHalBufferAllocator {
31  public:
~IHalBufferAllocator()32   virtual ~IHalBufferAllocator(){};
33 
34   // Allocate buffers and return buffer via buffers.
35   // The buffers is owned by caller
36   virtual status_t AllocateBuffers(const HalBufferDescriptor& buffer_descriptor,
37                                    std::vector<buffer_handle_t>* buffers) = 0;
38 
39   // free the list of buffers
40   virtual void FreeBuffers(std::vector<buffer_handle_t>* buffers) = 0;
41 };
42 
43 }  // namespace google_camera_hal
44 }  // namespace android
45 
46 #endif  // HARDWARE_GOOGLE_CAMERA_HAL_UTILS_HAL_BUFFER_ALLOCATOR_H
47