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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      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 
     17 #ifndef ANDROID_MEMORY_BASE_H
     18 #define ANDROID_MEMORY_BASE_H
     19 
     20 #include <stdlib.h>
     21 #include <stdint.h>
     22 
     23 #include <binder/IMemory.h>
     24 
     25 
     26 namespace android {
     27 
     28 // ---------------------------------------------------------------------------
     29 
     30 class MemoryBase : public BnMemory
     31 {
     32 public:
     33     MemoryBase(const sp<IMemoryHeap>& heap, ssize_t offset, size_t size);
     34     virtual ~MemoryBase();
     35     virtual sp<IMemoryHeap> getMemory(ssize_t* offset, size_t* size) const;
     36 
     37 protected:
     38     size_t getSize() const { return mSize; }
     39     ssize_t getOffset() const { return mOffset; }
     40     const sp<IMemoryHeap>& getHeap() const { return mHeap; }
     41 
     42 private:
     43     size_t          mSize;
     44     ssize_t         mOffset;
     45     sp<IMemoryHeap> mHeap;
     46 };
     47 
     48 // ---------------------------------------------------------------------------
     49 }; // namespace android
     50 
     51 #endif // ANDROID_MEMORY_BASE_H
     52