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 21 namespace android { 22 namespace intel { 23 24 class BufferMapper : public DataBuffer { 25 public: BufferMapper(DataBuffer & buffer)26 BufferMapper(DataBuffer& buffer) 27 : DataBuffer(buffer), 28 mRefCount(0) 29 { 30 } ~BufferMapper()31 virtual ~BufferMapper() {} 32 public: incRef()33 int incRef() 34 { 35 mRefCount++; 36 return mRefCount; 37 } decRef()38 int decRef() 39 { 40 mRefCount--; 41 return mRefCount; 42 } 43 getRef()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 uint32_t getKHandle(int subIndex) = 0; 59 virtual uint32_t getFbHandle(int subIndex) = 0; 60 virtual void putFbHandle() = 0; 61 private: 62 int mRefCount; 63 }; 64 65 } // namespace intel 66 } // namespace android 67 68 #endif /* BUFFERMAPPER_H__ */ 69