bitstreamStruct.h
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上传日期:2007-02-02
资源大小:6116k
文件大小:3k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /**********************************************************************
- MPEG-4 Audio VM
- Bit stream module
- This software module was originally developed by
- Heiko Purnhagen (University of Hannover / ACTS-MoMuSys)
- and edited by
- Ralph Sperschneider (Fraunhofer Gesellschaft IIS)
- in the course of development of the MPEG-2 NBC/MPEG-4 Audio standard
- ISO/IEC 13818-7, 14496-1,2 and 3. This software module is an
- implementation of a part of one or more MPEG-2 NBC/MPEG-4 Audio tools
- as specified by the MPEG-2 NBC/MPEG-4 Audio standard. ISO/IEC gives
- users of the MPEG-2 NBC/MPEG-4 Audio standards free license to this
- software module or modifications thereof for use in hardware or
- software products claiming conformance to the MPEG-2 NBC/ MPEG-4 Audio
- standards. Those intending to use this software module in hardware or
- software products are advised that this use may infringe existing
- patents. The original developer of this software module and his/her
- company, the subsequent editors and their companies, and ISO/IEC have
- no liability for use of this software module or modifications thereof
- in an implementation. Copyright is not released for non MPEG-2
- NBC/MPEG-4 Audio conforming products. The original developer retains
- full right to use the code for his/her own purpose, assign or donate
- the code to a third party and to inhibit third party from using the
- code for non MPEG-2 NBC/MPEG-4 Audio conforming products. This
- copyright notice must be included in all copies or derivative works.
- Copyright (c) 1996, 1999.
- Authors:
- HP Heiko Purnhagen, Uni Hannover <purnhage@tnt.uni-hannover.de>
- Changes:
- 19-apr-99 HP cleaning up some header files again :-(
- **********************************************************************/
- #ifndef _bitstreamStruct_h_
- #define _bitstreamStruct_h_
- /*
- * Although they should NEVER do so, some functions using the bitstream
- * module still want to have access to internal variables of the
- * BsBitBuffer and BsBitStream structures ...
- * ... and thus want include this file :-(
- *
- * HP 970219 990419
- */
- #include "bitstreamHandle.h" /* handles */
- struct BsBitBufferStruct /* bit buffer */
- {
- unsigned char* data; /* data bits */
- long numBit; /* number of bits in buffer */
- long size; /* buffer size in bits */
- };
- struct BsBitStreamStruct /* bit stream */
- {
- FILE * file; /* file or NULL for buffer i/o */
- int write; /* 0=read 1=write */
- long streamId; /* stream id (for debug) */
- char* info; /* info string (for read file) */
- BsBitBuffer* buffer[2]; /* bit buffers */
- /* (buffer[1] is only used for read file) */
- long currentBit; /* current bit position in bit stream */
- /* (i.e. number of bits read/written) */
- long numByte; /* number of bytes read/written (only file) */
- };
- #endif /* _bitstreamStruct_h_ */