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/*
**
** Copyright 2009, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef ANDROID_BUFFER_ALLOCATOR_H
#define ANDROID_BUFFER_ALLOCATOR_H
#include <stdint.h>
#include <cutils/native_handle.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/threads.h>
#include <utils/Singleton.h>
#include <ui/PixelFormat.h>
#include <hardware/gralloc.h>
namespace android {
// ---------------------------------------------------------------------------
class String8;
class GraphicBufferAllocator : public Singleton<GraphicBufferAllocator>
{
public:
enum {
USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER,
USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY,
USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN,
USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK,
USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER,
USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY,
USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN,
USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK,
USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE,
USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER,
USAGE_HW_2D = GRALLOC_USAGE_HW_2D,
USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK
};
static inline GraphicBufferAllocator& get() { return getInstance(); }
status_t alloc(uint32_t w, uint32_t h, PixelFormat format, int usage,
buffer_handle_t* handle, int32_t* stride);
status_t free(buffer_handle_t handle);
void dump(String8& res) const;
static void dumpToSystemLog();
private:
struct alloc_rec_t {
uint32_t w;
uint32_t h;
uint32_t s;
PixelFormat format;
uint32_t usage;
size_t size;
};
static Mutex sLock;
static KeyedVector<buffer_handle_t, alloc_rec_t> sAllocList;
friend class Singleton<GraphicBufferAllocator>;
friend class BufferLiberatorThread;
GraphicBufferAllocator();
~GraphicBufferAllocator();
alloc_device_t *mAllocDev;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_BUFFER_ALLOCATOR_H
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