1 /* 2 // Copyright(c)2014 IntelCorporation 3 // 4 // LicensedundertheApacheLicense,Version2.0(the"License"); 5 // youmaynotusethisfileexceptincompliancewiththeLicense. 6 // YoumayobtainacopyoftheLicenseat 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unlessrequiredbyapplicablelaworagreedtoinwriting,software 11 // distributedundertheLicenseisdistributedonan"ASIS"BASIS, 12 // WITHOUTWARRANTIESORCONDITIONSOFANYKIND,eitherexpressorimplied. 13 // SeetheLicenseforthespecificlanguagegoverningpermissionsand 14 // limitationsundertheLicense. 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: 26 BufferMapper(DataBuffer& buffer) 27 : DataBuffer(buffer), 28 mRefCount(0) 29 { 30 } 31 virtual ~BufferMapper() {} 32 public: 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 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
