lpc_common.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++
- /*
- This software module was originally developed by
- Heiko Purnhagen (University of Hannover)
- and edited by
- 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.
- */
- /**********************************************************************
- MPEG-4 Audio VM
- Source file: lpc_common.h
- $Id: lpc_common.h,v 1.2 2002/05/13 15:54:11 mvillari Exp $
- Authors:
- HP Heiko Purnhagen, Uni Hannover <purnhage@tnt.uni-hannover.de>
- Changes:
- 25-oct-96 HP common BITSTREAM and MAX_N_LAG_CANDIDATES
- **********************************************************************/
- #ifndef _lpc_common_h_
- #define _lpc_common_h_
- #include "bitstreamHandle.h" /* handler */
- /* see wdbxx.h and lpc_abscomp.ch */
- #define MAX_N_LAG_CANDIDATES 15
- #define MultiPulseExc 0
- #define RegularPulseExc 1
- typedef enum {
- fs8kHz= 0,
- fs16kHz= 1
- } LPC_FS_MODE;
- #define ScalarQuantizer 0
- #define VectorQuantizer 1
- #define Scalable_VQ 0
- #define Optimized_VQ 1
- #define OFF 0
- #define ON 1
- #define NO 0
- #define YES 1
- typedef struct {
- int frameNumSample; /* out: num samples per frame */
- int delayNumSample;
- BsBitStream* p_bitstream;
- BsBitBuffer* coreBitBuf;
- float** sampleBuf;
- int bitsPerFrame;
- } LPC_DATA;
- #endif /* #ifndef _lpc_common_h_ */
- /* end of lpc_common.h */