dwt.hpp
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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:6k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /* $Id: dwt.hpp,v 1.2 2001/04/19 18:32:09 wmay Exp $ */
- /****************************************************************************/
- /* MPEG4 Visual Texture Coding (VTC) Mode Software */
- /* */
- /* This software was jointly developed by the following participants: */
- /* */
- /* Single-quant, multi-quant and flow control */
- /* are provided by Sarnoff Corporation */
- /* Iraj Sodagar (iraj@sarnoff.com) */
- /* Hung-Ju Lee (hjlee@sarnoff.com) */
- /* Paul Hatrack (hatrack@sarnoff.com) */
- /* Shipeng Li (shipeng@sarnoff.com) */
- /* Bing-Bing Chai (bchai@sarnoff.com) */
- /* B.S. Srinivas (bsrinivas@sarnoff.com) */
- /* */
- /* Bi-level is provided by Texas Instruments */
- /* Jie Liang (liang@ti.com) */
- /* */
- /* Shape Coding is provided by OKI Electric Industry Co., Ltd. */
- /* Zhixiong Wu (sgo@hlabs.oki.co.jp) */
- /* Yoshihiro Ueda (yueda@hlabs.oki.co.jp) */
- /* Toshifumi Kanamaru (kanamaru@hlabs.oki.co.jp) */
- /* */
- /* OKI, Sharp, Sarnoff, TI and Microsoft contributed to bitstream */
- /* exchange and bug fixing. */
- /* */
- /* */
- /* In the course of development of the MPEG-4 standard, this software */
- /* module is an implementation of a part of one or more MPEG-4 tools as */
- /* specified by the MPEG-4 standard. */
- /* */
- /* The copyright of this software belongs to ISO/IEC. ISO/IEC gives use */
- /* of the MPEG-4 standard free license to use this software module or */
- /* modifications thereof for hardware or software products claiming */
- /* conformance to the MPEG-4 standard. */
- /* */
- /* Those intending to use this software module in hardware or software */
- /* products are advised that use may infringe existing patents. The */
- /* original developers of this software module and their companies, the */
- /* subsequent editors and their companies, and ISO/IEC have no liability */
- /* and ISO/IEC have no liability for use of this software module or */
- /* modification thereof in an implementation. */
- /* */
- /* Permission is granted to MPEG members to use, copy, modify, */
- /* and distribute the software modules ( or portions thereof ) */
- /* for standardization activity within ISO/IEC JTC1/SC29/WG11. */
- /* */
- /* Copyright 1995, 1996, 1997, 1998 ISO/IEC */
- /****************************************************************************/
- /************************************************************/
- /* Sarnoff Very Low Bit Rate Still Image Coder */
- /* Copyright 1995, 1996, 1997, 1998 Sarnoff Corporation */
- /************************************************************/
- /* DWT and inverse DWT header file
- Created by Shipeng Li, Sarnoff Corporation, Jan. 1998
- Copyright (c) Sarnoff Corporation
- */
- #ifndef _DWT_H_
- #define _DWT_H_
- #include "basic.hpp"
- #define UChar UChar
- #ifdef DATA
- #undef DATA
- #endif
- #define DATA Int
- #ifdef INT
- #undef INT
- #endif
- #define INT Int
- #define ROUNDDIV(x, y) ((x)>0?(Int)(((Int)(x)+((y)>>1))/(y)):(Int)(((Int)(x)-((y)>>1)) /(y)))
- enum { /* DWT or IDWT return values */
- DWT_OK,
- DWT_FILTER_UNSUPPORTED,
- DWT_MEMORY_FAILED,
- DWT_COEFF_OVERFLOW,
- DWT_INVALID_LEVELS,
- DWT_INVALID_WIDTH,
- DWT_INVALID_HEIGHT,
- DWT_INTERNAL_ERROR,
- DWT_NOVALID_PIXEL
- };
- #ifdef RECTANGULAR
- #undef RECTANGULAR
- #endif
- #define RECTANGULAR -1
- /* Image data type */
- enum {
- UCHAR_ENUM,
- USHORT_ENUM
- };
- enum { /* filter class */
- ODD_SYMMETRIC,
- EVEN_SYMMETRIC,
- ORTHORGONAL
- };
- enum {
- EVEN,
- ODD
- };
- enum {
- HORIZONTAL,
- VERTICAL
- };
- enum {
- NONZERO_HIGH,
- ZERO_HIGH,
- ALL_ZERO
- };
- #define OUT0 0
- #define IN 1
- #define OUT1 2
- #define OUT2 3
- #define OUT3 4
- enum { /* filter type */
- INT_TYPE,
- DBL_TYPE
- };
- typedef struct {
- INT Class;
- /* 0: Odd Symmetric 1: Even Symmetric 2: Orthogonal (not supported)
- Note: This is not defined by MPEG4-CD syntax but should be, since different
- wavelets corresponds to different extension.
- Ref. "Shape Adpative Discrete Wavelet Transform for Arbitrarily-Shaped
- Visual Object Coding" S. Li and W. Li (submitted to IEEE T-CSVT)
- */
- INT Type;
- /* 0: Short Coeff; 1: Double Coeff */
- INT HPLength;
- INT LPLength;
- Void *HPCoeff;
- Void *LPCoeff;
- INT Scale;
- } FILTER;
- #endif /*_DWT_H_ */