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/*
// Copyright (c) 2014 Intel Corporation
//
// 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 BUFFERMANAGER_H_
#define BUFFERMANAGER_H_
#include <Dump.h>
#include <DataBuffer.h>
#include <BufferMapper.h>
#include <BufferCache.h>
#include <utils/Mutex.h>
namespace android {
namespace intel {
// Gralloc Buffer Manager
class BufferManager {
public:
BufferManager();
virtual ~BufferManager();
bool initCheck() const;
virtual bool initialize();
virtual void deinitialize();
// dump interface
void dump(Dump& d);
// lockDataBuffer and unlockDataBuffer must be used in serial
// nested calling of them will cause a deadlock
DataBuffer* lockDataBuffer(buffer_handle_t handle);
void unlockDataBuffer(DataBuffer *buffer);
// get and put interfaces are deprecated
// use lockDataBuffer and unlockDataBuffer instead
DataBuffer* get(buffer_handle_t handle);
void put(DataBuffer *buffer);
// map/unmap a data buffer into/from display memory
BufferMapper* map(DataBuffer& buffer);
void unmap(BufferMapper *mapper);
// frame buffer management
//return 0 if allocation fails
virtual buffer_handle_t allocFrameBuffer(int width, int height, int *stride);
virtual void freeFrameBuffer(buffer_handle_t fbHandle);
buffer_handle_t allocGrallocBuffer(uint32_t width, uint32_t height, uint32_t format, uint32_t usage);
void freeGrallocBuffer(buffer_handle_t handle);
virtual bool blit(buffer_handle_t srcHandle, buffer_handle_t destHandle,
const crop_t& destRect, bool filter, bool async) = 0;
protected:
virtual DataBuffer* createDataBuffer(buffer_handle_t handle) = 0;
virtual BufferMapper* createBufferMapper(DataBuffer& buffer) = 0;
const hw_device_t* mGralloc;
private:
enum {
// make the buffer pool large enough
DEFAULT_BUFFER_POOL_SIZE = 128,
};
KeyedVector<buffer_handle_t, BufferMapper*> mFrameBuffers;
BufferCache *mBufferPool;
DataBuffer *mDataBuffer;
Mutex mDataBufferLock;
Mutex mLock;
bool mInitialized;
};
} // namespace intel
} // namespace android
#endif /* BUFFERMANAGER_H_ */
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