101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
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/*
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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 <cutils/native_handle.h>
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#include <utils/Errors.h>
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#include <utils/KeyedVector.h>
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#include <utils/threads.h>
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#include <utils/Singleton.h>
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#include <ui/PixelFormat.h>
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#include <hardware/gralloc.h>
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namespace android {
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// ---------------------------------------------------------------------------
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class String8;
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class BufferAllocator : public Singleton<BufferAllocator>
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{
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public:
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enum {
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USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER,
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USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY,
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USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN,
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USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK,
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USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER,
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USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY,
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USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN,
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USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK,
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USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
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USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE,
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USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER,
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USAGE_HW_2D = GRALLOC_USAGE_HW_2D,
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USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK
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};
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static inline BufferAllocator& get() { return getInstance(); }
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status_t alloc(uint32_t w, uint32_t h, PixelFormat format, int usage,
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buffer_handle_t* handle, int32_t* stride);
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status_t free(buffer_handle_t handle);
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status_t map(buffer_handle_t handle, void** addr);
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status_t unmap(buffer_handle_t handle);
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void dump(String8& res) const;
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private:
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struct alloc_rec_t {
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uint32_t w;
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uint32_t h;
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PixelFormat format;
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uint32_t usage;
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void* vaddr;
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size_t size;
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};
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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<BufferAllocator>;
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BufferAllocator();
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~BufferAllocator();
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mutable Mutex mLock;
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alloc_device_t *mAllocDev;
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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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