111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
/*
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*
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* Copyright 2009, The Android Open Source Project
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*
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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 ANDROID_BUFFER_ALLOCATOR_H
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#define ANDROID_BUFFER_ALLOCATOR_H
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#include <stdint.h>
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#include <memory>
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#include <string>
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#include <cutils/native_handle.h>
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#include <ui/PixelFormat.h>
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#include <utils/Errors.h>
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#include <utils/KeyedVector.h>
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#include <utils/Mutex.h>
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#include <utils/Singleton.h>
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namespace android {
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class GrallocAllocator;
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class GraphicBufferMapper;
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class GraphicBufferAllocator : public Singleton<GraphicBufferAllocator>
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{
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public:
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static inline GraphicBufferAllocator& get() { return getInstance(); }
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/**
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* Allocates and imports a gralloc buffer.
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*
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* The handle must be freed with GraphicBufferAllocator::free() when no longer needed.
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*/
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status_t allocate(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
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uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
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std::string requestorName);
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/**
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* Allocates and does NOT import a gralloc buffer. Buffers cannot be used until they have
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* been imported. This function is for advanced use cases only.
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*
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* The raw native handle must be freed by calling native_handle_close() followed by
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* native_handle_delete().
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*/
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status_t allocateRawHandle(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
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uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
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std::string requestorName);
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/**
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* DEPRECATED: GraphicBufferAllocator does not use the graphicBufferId.
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*/
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status_t allocate(uint32_t w, uint32_t h, PixelFormat format,
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uint32_t layerCount, uint64_t usage,
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buffer_handle_t* handle, uint32_t* stride, uint64_t graphicBufferId,
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std::string requestorName);
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status_t free(buffer_handle_t handle);
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uint64_t getTotalSize() const;
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void dump(std::string& res, bool less = true) const;
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static void dumpToSystemLog(bool less = true);
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protected:
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struct alloc_rec_t {
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uint32_t width;
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uint32_t height;
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uint32_t stride;
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PixelFormat format;
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uint32_t layerCount;
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uint64_t usage;
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size_t size;
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std::string requestorName;
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};
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status_t allocateHelper(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
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uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
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std::string requestorName, bool importBuffer);
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static Mutex sLock;
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static KeyedVector<buffer_handle_t, alloc_rec_t> sAllocList;
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friend class Singleton<GraphicBufferAllocator>;
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GraphicBufferAllocator();
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~GraphicBufferAllocator();
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GraphicBufferMapper& mMapper;
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std::unique_ptr<const GrallocAllocator> mAllocator;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_BUFFER_ALLOCATOR_H
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