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 class MediaBufferBase; 31 32 struct ABuffer : public RefBase { 33 explicit ABuffer(size_t capacity); 34 ABuffer(void *data, size_t capacity); 35 baseABuffer36 uint8_t *base() { return (uint8_t *)mData; } dataABuffer37 uint8_t *data() { return (uint8_t *)mData + mRangeOffset; } capacityABuffer38 size_t capacity() const { return mCapacity; } sizeABuffer39 size_t size() const { return mRangeLength; } offsetABuffer40 size_t offset() const { return mRangeOffset; } 41 42 void setRange(size_t offset, size_t size); 43 44 // create buffer from dup of some memory block 45 static sp<ABuffer> CreateAsCopy(const void *data, size_t capacity); 46 setInt32DataABuffer47 void setInt32Data(int32_t data) { mInt32Data = data; } int32DataABuffer48 int32_t int32Data() const { return mInt32Data; } 49 50 sp<AMessage> meta(); 51 52 MediaBufferBase *getMediaBufferBase(); 53 void setMediaBufferBase(MediaBufferBase *mediaBuffer); 54 55 protected: 56 virtual ~ABuffer(); 57 58 private: 59 sp<AMessage> mMeta; 60 61 MediaBufferBase *mMediaBufferBase; 62 63 void *mData; 64 size_t mCapacity; 65 size_t mRangeOffset; 66 size_t mRangeLength; 67 68 int32_t mInt32Data; 69 70 bool mOwnsData; 71 72 DISALLOW_EVIL_CONSTRUCTORS(ABuffer); 73 }; 74 75 } // namespace android 76 77 #endif // A_BUFFER_H_ 78