mbs.h
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * 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 dmackie@cisco.com
- */
- #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__ */