QMInit.cpp
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:9k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /* $Id: QMInit.cpp,v 1.2 2001/04/19 18:32:10 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 */
- /************************************************************/
- #include <stdio.h>
- #include <stdlib.h>
- #include "basic.hpp"
- #include "dataStruct.hpp"
- #include "globals.hpp"
- #include "states.hpp"
- #include "quant.hpp"
- #include "QMUtils.hpp"
- #include "QM.hpp"
- Int CVTCCommon::ztqQListInit()
- {
- Int err, i;
- err=0;
- /* allocatate memory for prevQList */
- for (i = 0; i < mzte_codec.m_iColors; ++i)
- if ((prevQList[i] = (Int *)calloc(mzte_codec.m_iSpatialLev,
- sizeof(Int)))==NULL)
- {
- noteError("Can't allocate memory for prevQList.");
- err = -1;
- goto ERR;
- }
- /* allocatate memory for prevQList2 */
- for (i = 0; i < mzte_codec.m_iColors; ++i)
- if ((prevQList2[i] = (Int *)calloc(mzte_codec.m_iSpatialLev,
- sizeof(Int)))==NULL)
- {
- noteError("Can't allocate memory for prevQList.");
- err = -1;
- goto ERR;
- }
- /* allocatate memory for prevQList */
- for (i = 0; i < mzte_codec.m_iColors; ++i)
- if ((scaleLev[i] = (Int *)calloc(mzte_codec.m_iSpatialLev,
- sizeof(Int)))==NULL)
- {
- noteError("Can't allocate memory for scaleLev.");
- err = -1;
- goto ERR;
- }
- ERR:
- return err;
- }
- Void CVTCCommon::ztqQListExit()
- {
- Int i;
- for (i = 0; i < mzte_codec.m_iColors; ++i)
- {
- if (prevQList[i] != NULL)
- {
- free(prevQList[i]);
- prevQList[i] = NULL;
- }
- if (prevQList2[i] != NULL)
- {
- free(prevQList2[i]);
- prevQList2[i] = NULL;
- }
- if (scaleLev[i] != NULL)
- {
- free(scaleLev[i]);
- scaleLev[i] = NULL;
- }
- }
- }
- /*
- Function Name
- -------------
- Int ztqInitDC()
- Arguments
- ---------
- Int decode - 0, if called for encoding. !0, if called for decoding.
- Description
- -----------
- Initialize all information for all DC wavelet coefficients. This must be
- called once before calling the encQuantizeDC function and once before
- calling the decIQuantizeDC function.
- Functions Called
- ----------------
- initQuantSingleStage
- initInvQuantSingleStage
- Return Value
- ------------
- 0, if ok. !0, if error.
- Source File
- -----------
- QMInit.c
- */
- Int CVTCCommon::ztqInitDC(Int decode, Int c)
- {
- Int err;
- Int x, y;
- Int dummyPrevQ;
- err = 0;
- noteDetail("Initializing DC coefficient information....");
- noteDebug("DC Dimensions: Width=%d, Height=%d",
- mzte_codec.m_iDCWidth, mzte_codec.m_iDCHeight);
- for (y = 0; y < mzte_codec.m_iDCHeight; ++y)
- for (x = 0; x < mzte_codec.m_iDCWidth; ++x)
- {
- if (decode)
- initInvQuantSingleStage(&COEFF_QSTATE(x, y, c), &dummyPrevQ);
- else
- initQuantSingleStage(&COEFF_QSTATE(x, y, c), &dummyPrevQ,
- COEFF_ORGVAL(x,y,c));
- COEFF_TYPE(x, y, c) = UNTYPED;
- COEFF_STATE(x, y, c) = S_DC;
- }
- noteDetail("Completed initializing of DC coefficient information.");
- return err;
- }
- /*
- Function Name
- -------------
- Int ztqInitAC()
- Arguments
- ---------
- Int decode - 0, if called for encoding. !0, if called for decoding.
- Description
- -----------
- Initialize all information for all AC wavelet coefficients. This must be
- called once before calling any ztq enc/AC functions and once before calling
- any ztq dec/AC functions.
- Functions Called
- ----------------
- initQuantSingleStage
- initInvQuantSingleStage
- findChild
- isIndexInRootBands
- Return Value
- ------------
- 0, if ok. !0, if error.
- Source File
- -----------
- QMInit.c
- */
- // hjlee 0901
- Int CVTCCommon::ztqInitAC(Int decode, Int c)
- {
- Int err;
- Int x, y, xc[4], yc[4];
- Int height, width;
- Int dummyPrevQ;
- err = 0;
- noteDetail("Initializing AC coefficient information for col %d....",c);
- height = mzte_codec.m_iHeight >> (int)(c!=0);
- width = mzte_codec.m_iWidth >> (int)(c!=0);
- noteDebug("Image: Width=%d, Height=%d", width, height);
- for (y = 0; y < height; ++y)
- for (x = 0; x < width; ++x)
- {
- if (x >= mzte_codec.m_iDCWidth || y >= mzte_codec.m_iDCHeight)
- {
- if (decode)
- initInvQuantSingleStage(&COEFF_QSTATE(x, y, c), &dummyPrevQ);
- else
- {
- initQuantSingleStage(&COEFF_QSTATE(x, y, c), &dummyPrevQ,
- COEFF_ORGVAL(x,y,c));
- }
- COEFF_TYPE(x, y, c) = UNTYPED;
- /* AC Bands */
- if (findChild(x, y, xc, yc, c)==0 ||
- x >= mzte_codec.m_SPlayer[c].width ||
- y >= mzte_codec.m_SPlayer[c].height) /* leaf */
- COEFF_STATE(x, y, c) = S_LINIT;
- else
- COEFF_STATE(x, y,c) = S_INIT;
- }
- }
- noteDetail("Completed Initializing of AC coefficient information.");
- return err;
- }