ref: 064740662b4b78775c62f610a84dc17969a1aabf
dir: /common/mp4av/mbs.h/
/* * The contents of this file are subject to the Mozilla Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is MPEG4IP. * * The Initial Developer of the Original Code is Cisco Systems Inc. * Portions created by Cisco Systems Inc. are * Copyright (C) Cisco Systems Inc. 2001-2002. All Rights Reserved. * * Contributor(s): * Dave Mackie [email protected] */ #ifndef __MBS_INCLUDED__ #define __MBS_INCLUDED__ class CMemoryBitstream { public: CMemoryBitstream() { m_pBuf = NULL; m_bitPos = 0; m_numBits = 0; } void AllocBytes(u_int32_t numBytes); void SetBytes(u_int8_t* pBytes, u_int32_t numBytes); void PutBytes(u_int8_t* pBytes, u_int32_t numBytes); void PutBits(u_int32_t bits, u_int32_t numBits); u_int32_t GetBits(u_int32_t numBits); void SkipBytes(u_int32_t numBytes) { SkipBits(numBytes << 3); } void SkipBits(u_int32_t numBits) { SetBitPosition(GetBitPosition() + numBits); } u_int32_t GetBitPosition() { return m_bitPos; } void SetBitPosition(u_int32_t bitPos) { if (bitPos > m_numBits) { throw; } m_bitPos = bitPos; } u_int8_t* GetBuffer() { return m_pBuf; } u_int32_t GetNumberOfBytes() { return (GetNumberOfBits() + 7) / 8; } u_int32_t GetNumberOfBits() { return m_numBits; } protected: u_int8_t* m_pBuf; u_int32_t m_bitPos; u_int32_t m_numBits; }; #endif /* __MBS_INCLUDED__ */