Cody Schuffelen | 134ff03 | 2019-11-22 00:25:32 -0800 | [diff] [blame^] | 1 | #pragma once |
| 2 | /* |
| 3 | * Copyright (C) 2017 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #include "common/vsoc/lib/typed_region_view.h" |
| 19 | #include "common/vsoc/shm/gralloc_layout.h" |
| 20 | |
| 21 | #include <string> |
| 22 | |
| 23 | namespace vsoc { |
| 24 | namespace gralloc { |
| 25 | |
| 26 | // Allows access to the gralloc buffer region from host side. It needs to be a |
| 27 | // different class than the one on guest side because of the required |
| 28 | // interactions with the kernel on the guest. |
| 29 | // Initially this class only returns a pointer to a buffer in memory given a |
| 30 | // region offset, which is enough for now since it's only used by the hwcomposer |
| 31 | // (which gets all other information from the guest side hwcomposer) and by the |
| 32 | // VNC server (which uses only the frame buffer and gets the information it |
| 33 | // needs from the framebuffer region). |
| 34 | class GrallocBufferRegionView |
| 35 | : vsoc::TypedRegionView< |
| 36 | GrallocBufferRegionView, |
| 37 | vsoc::layout::gralloc::GrallocBufferLayout> { |
| 38 | public: |
| 39 | GrallocBufferRegionView() = default; |
| 40 | GrallocBufferRegionView(const GrallocBufferRegionView&) = delete; |
| 41 | GrallocBufferRegionView& operator=(const GrallocBufferRegionView&) = delete; |
| 42 | |
| 43 | uint8_t* OffsetToBufferPtr(uint32_t offset); |
| 44 | }; |
| 45 | |
| 46 | } // namespace gralloc |
| 47 | } // namespace vsoc |