1/* 2// Copyright (c) 2014 Intel Corporation 3// 4// Licensed under the Apache License, Version 2.0 (the "License"); 5// you may not use this file except in compliance with the License. 6// You may obtain a copy of the License at 7// 8// http://www.apache.org/licenses/LICENSE-2.0 9// 10// Unless required by applicable law or agreed to in writing, software 11// distributed under the License is distributed on an "AS IS" BASIS, 12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13// See the License for the specific language governing permissions and 14// limitations under the License. 15*/ 16#ifndef BUFFERMAPPER_H__ 17#define BUFFERMAPPER_H__ 18 19#include <DataBuffer.h> 20 21namespace android { 22namespace intel { 23 24class BufferMapper : public DataBuffer { 25public: 26 BufferMapper(DataBuffer& buffer) 27 : DataBuffer(buffer), 28 mRefCount(0) 29 { 30 } 31 virtual ~BufferMapper() {} 32public: 33 int incRef() 34 { 35 mRefCount++; 36 return mRefCount; 37 } 38 int decRef() 39 { 40 mRefCount--; 41 return mRefCount; 42 } 43 44 int getRef() const 45 { 46 return mRefCount; 47 } 48 49 // map the given buffer into both DC & CPU MMU 50 virtual bool map() = 0; 51 // unmap the give buffer from both DC & CPU MMU 52 virtual bool unmap() = 0; 53 54 // return gtt page offset 55 virtual uint32_t getGttOffsetInPage(int subIndex) const = 0; 56 virtual void* getCpuAddress(int subIndex) const = 0; 57 virtual uint32_t getSize(int subIndex) const = 0; 58 virtual buffer_handle_t getKHandle(int subIndex) = 0; 59 virtual buffer_handle_t getFbHandle(int subIndex) = 0; 60 virtual void putFbHandle() = 0; 61private: 62 int mRefCount; 63}; 64 65} // namespace intel 66} // namespace android 67 68#endif /* BUFFERMAPPER_H__ */ 69