att_header.h
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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++
- /*
- This software module was originally developed by
- Peter Kroon (Bell Laboratories, Lucent Technologies)
- 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.
- */
- #ifndef _att_header_h_
- #define _att_header_h_
- #include <stdio.h>
- #include <stdlib.h>
- #include <math.h>
- #include <malloc.h>
- /* Revised 06/26/96 These are defined as configuration input
- #define FRAME_SIZE 200
- #define MAX_N_LAG_CANDIDATES 2
- #define MAXLAG 156
- */
- #define mmax(x,y) ((x > y) ? x : y)
- #define mmin(x,y) ((x > y) ? y : x)
- typedef signed short Int16;
- typedef struct {
- float val;
- int idx;
- } lag_amdf;
- #ifdef __cplusplus
- extern "C" {
- #endif
- void Int2Float(Int16 *int_sig, float *flt_sig, long n);
- void MoveFData(float *des, float *start, long len);
- void MoveIData(Int16 *des, Int16 *start, long len);
- void LPF_800(float inbuf[], float lpbuf[], long len);
- void Inv_Filt(float lpbuf[], float ivbuf[], long len);
- void AMDF(float speech[], lag_amdf amdf[], long min_lag, long max_lag, long len);
- void MakeAmdfWeight(float weight[], long min_lag, long max_lag);
- void Weighted_amdf(lag_amdf amdf[], float weight[], long min_lag, long max_lag);
- void Sort_Amdf(lag_amdf amdf[], long len, long n_lag);
- void Assign_candidate(long candidates[], lag_amdf amdf[], long n_cand);
- #ifdef __cplusplus
- }
- #endif
- #endif