mirror of
https://github.com/openharmony/graphic_surface.git
synced 2026-07-01 03:21:54 -04:00
mamingshuai
85 lines
2.6 KiB
C++
Executable File
85 lines
2.6 KiB
C++
Executable File
/*
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef GRAPHIC_LITE_BUFFER_MANAGER_H
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#define GRAPHIC_LITE_BUFFER_MANAGER_H
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#include "display_gralloc.h"
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#include "surface_buffer_impl.h"
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#include "surface_type.h"
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namespace OHOS {
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/**
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* @brief Buffer Manager abstract class. Provide allocate, free, map, unmap buffer attr ability.
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* It needs vendor to adapte it. Default Hisi support shm and physical memory.
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*/
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class BufferManager {
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public:
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/**
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* @brief Buffer Manager Shared Memory Single Instance.
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* It depends kernel supported shm.
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* @returns BufferManager pointer.
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*/
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static BufferManager* GetInstance();
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/**
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* @brief Buffer Manager Init.
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* @returns Whether Buffer manager init succeed or not.
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*/
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bool Init();
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/**
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* @brief Allocate buffer for producer.
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* @param [in] size, alloc buffer size.
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* @param [in] usage, alloc buffer usage.
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* @returns buffer poiter.
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*/
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SurfaceBufferImpl* AllocBuffer(uint32_t size, uint32_t usage);
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/**
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* @brief Free the buffer.
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* @param [in] SurfaceBufferImpl pointer, free the buffer size.
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*/
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void FreeBuffer(const SurfaceBufferImpl* buffer);
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/**
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* @brief Flush the buffer.
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* @param [in] Flush SurfaceBufferImpl cache to physical memory.
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* @returns 0 is succeed; other is failed.
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*/
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int32_t FlushCache(const SurfaceBufferImpl& buffer);
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/**
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* @brief Map the buffer for producer.
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* @param [in] SurfaceBufferImpl, need to map.
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* @returns Whether map buffer succeed or not.
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*/
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bool MapBuffer(SurfaceBufferImpl& buffer);
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/**
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* @brief Unmap the buffer, which producer could not writed data.
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* @param [in] SurfaceBufferImpl, need to unmap.
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*/
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void UnmapBuffer(SurfaceBufferImpl& buffer);
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private:
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BufferManager() : grallocFucs_(nullptr) {}
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~BufferManager() {}
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bool UsageToMemType(MemType& type, uint32_t usage);
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void SurfaceBufferToGrallocBuffer(const SurfaceBufferImpl& buffer, GrallocBuffer &graphicBuffer);
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GrallocFuncs* grallocFucs_;
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};
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} // end namespace
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#endif |