1 /* 2 * Copyright (C) 2010 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 A_BUFFER_H_ 18 19 #define A_BUFFER_H_ 20 21 #include <sys/types.h> 22 #include <stdint.h> 23 24 #include <media/stagefright/foundation/ABase.h> 25 #include <utils/RefBase.h> 26 27 namespace android { 28 29 struct AMessage; 30 31 struct ABuffer : public RefBase { 32 explicit ABuffer(size_t capacity); 33 ABuffer(void *data, size_t capacity); 34 35 uint8_t *base() { return (uint8_t *)mData; } 36 uint8_t *data() { return (uint8_t *)mData + mRangeOffset; } 37 size_t capacity() const { return mCapacity; } 38 size_t size() const { return mRangeLength; } 39 size_t offset() const { return mRangeOffset; } 40 41 void setRange(size_t offset, size_t size); 42 43 // create buffer from dup of some memory block 44 static sp<ABuffer> CreateAsCopy(const void *data, size_t capacity); 45 46 void setInt32Data(int32_t data) { mInt32Data = data; } 47 int32_t int32Data() const { return mInt32Data; } 48 49 sp<AMessage> meta(); 50 51 protected: 52 virtual ~ABuffer(); 53 54 private: 55 sp<AMessage> mMeta; 56 57 void *mData; 58 size_t mCapacity; 59 size_t mRangeOffset; 60 size_t mRangeLength; 61 62 int32_t mInt32Data; 63 64 bool mOwnsData; 65 66 DISALLOW_EVIL_CONSTRUCTORS(ABuffer); 67 }; 68 69 } // namespace android 70 71 #endif // A_BUFFER_H_ 72
