1 /**
2  * Copyright (C) 2022 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 IMS_MEDIA_BITREADER_H
18 #define IMS_MEDIA_BITREADER_H
19 
20 #include <stdint.h>
21 
22 class ImsMediaBitReader
23 {
24 public:
25     ImsMediaBitReader();
26     ~ImsMediaBitReader();
27     void SetBuffer(uint8_t* pbBuffer, uint32_t nBufferSize);
28     uint32_t Read(uint32_t nSize);
29     void ReadByteBuffer(uint8_t* pbDst, uint32_t nBitSize);
30     uint32_t ReadByUEMode();
31 
32 private:
33     uint8_t* mBuffer;
34     uint32_t mMaxBufferSize;
35     uint32_t mBytePos;
36     uint32_t mBitPos;  // start bit position of valid data in mBitBuffer
37     uint32_t mBitBuffer;
38     bool mBufferEOF;
39 };
40 
41 #endif