📄 ztscanutil.cpp
字号:
/* $Id: ztscanUtil.c,v 1.4 1998/05/14 21:41:23 hjlee 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 */
/************************************************************/
//Added by Sarnoff for error resilience, 3/5/99
#define _ERROR_RESI_
//End: Added by Sarnoff for error resilience, 3/5/99
#include <stdio.h>
#include <stdlib.h>
#ifndef WIN32
#include <unistd.h>
#endif
#include "dataStruct.hpp"
#include "globals.hpp"
//#define ZTSCAN_UTIL // hjlee 0901
#include "ztscan_common.hpp" // hjlee 0901
//Added by Sarnoff for error resilience, 3/5/99
/* all variables related to error resilience routines. bbc, 11/5/98 */
Int TU_first, TU_last; /* texture unit numbers in a packet */
Int prev_TU_first, prev_TU_last; /* TU range in the previously corrected */
/* decoded packet. */
Int TU_max, TU_max_dc,LTU,CTU_no; /* max and currently decoded TU */
Int prev_TU_err; /* <0 indicates that previous packet is erroneous */
Int packet_size,prev_segs_size;
Int errSignal,errWarnSignal,errMagSignal; /* error related signal */
//Int targetPacketLength; //bbc, 2/19/99
/* var's related to finding the position of a TU, bbc, 11/6/98 */
Int start_h,start_w,band_height,band_width,TU_height,TU_spa_loc,
TU_color,TU_band,prev_LTU,packet_band,packet_TU_first,packet_top,
packet_left,wvt_level, level_h,level_w,subband_loc;
/* var's related to finding the position of previous detected good segment */
Int prev_good_TU,prev_good_height,prev_good_width;
ac_model acmSGMK;
UShort ifreq[2] = {1,3};
//End: Added by Sarnoff for error resilience, 3/5/99
ac_model acmVZ[NCOLOR], *acm_vz; /* here only for DC */
ac_model acmType[NCOLOR][MAXDECOMPLEV][MAX_NUM_TYPE_CONTEXTS],
*acm_type[MAXDECOMPLEV][MAX_NUM_TYPE_CONTEXTS];
ac_model acmSign[NCOLOR][MAXDECOMPLEV], *acm_sign[MAXDECOMPLEV];
ac_model *acmBPMag[NCOLOR][MAXDECOMPLEV], **acm_bpmag;
ac_model *acmBPRes[NCOLOR][MAXDECOMPLEV], **acm_bpres;
ac_model *acm_bpdc; // 1127
Void CVTCCommon::probModelInitSQ(Int col)
{
SNR_IMAGE *snr_image;
Int i,l;
snr_image=&(mzte_codec.m_SPlayer[col].SNRlayer.snr_image);
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
mzte_ac_model_init(&acmType[col][l][CONTEXT_INIT],NUMCHAR_TYPE,NULL,
ADAPT,1);
mzte_ac_model_init(&acmType[col][l][CONTEXT_LINIT],2,NULL,ADAPT,1);
mzte_ac_model_init(&acmSign[col][l],2,NULL,ADAPT,1);
}
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
if ((acmBPMag[col][l]
=(ac_model *)calloc(WVTDECOMP_NUMBITPLANES(col,l),sizeof(ac_model)))==NULL&& WVTDECOMP_NUMBITPLANES(col,l)!=0) // modified by Sharp (99/5/10)
errorHandler("Can't alloc acmBPMag in probModelInitSQ.");
for(i=0;i<WVTDECOMP_NUMBITPLANES(col,l);i++)
{
mzte_ac_model_init(&acmBPMag[col][l][i],2,NULL,ADAPT,1);
acmBPMag[col][l][i].Max_frequency=Bitplane_Max_frequency;
}
}
}
Void CVTCCommon::probModelFreeSQ(Int col)
{
SNR_IMAGE *snr_image;
Int i,l;
snr_image=&(mzte_codec.m_SPlayer[col].SNRlayer.snr_image);
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
mzte_ac_model_done(&acmType[col][l][CONTEXT_INIT]);
mzte_ac_model_done(&acmType[col][l][CONTEXT_LINIT]);
mzte_ac_model_done(&acmSign[col][l]);
}
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
for(i=0;i<WVTDECOMP_NUMBITPLANES(col,l);i++)
mzte_ac_model_done(&acmBPMag[col][l][i]);
free(acmBPMag[col][l]);
}
}
Void CVTCCommon::setProbModelsSQ(Int col)
{
Int l;
/* Set prob model type pointers */
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
acm_type[l][CONTEXT_INIT]=&acmType[col][l][CONTEXT_INIT];
acm_type[l][CONTEXT_LINIT]=&acmType[col][l][CONTEXT_LINIT];
acm_sign[l]=&acmSign[col][l];
}
acm_bpmag=acmBPMag[col];
}
Void CVTCCommon::probModelInitMQ(Int col)
{
SNR_IMAGE *snr_image;
Int i,l;
snr_image=&(mzte_codec.m_SPlayer[col].SNRlayer.snr_image);
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
mzte_ac_model_init(&acmType[col][l][CONTEXT_INIT],NUMCHAR_TYPE,NULL,
ADAPT,1);
mzte_ac_model_init(&acmType[col][l][CONTEXT_LINIT],2,NULL,ADAPT,1);
mzte_ac_model_init(&acmType[col][l][CONTEXT_ZTR],NUMCHAR_TYPE,NULL,
ADAPT,1);
mzte_ac_model_init(&acmType[col][l][CONTEXT_ZTR_D],NUMCHAR_TYPE,NULL,
ADAPT,1);
mzte_ac_model_init(&acmType[col][l][CONTEXT_IZ],2,NULL,ADAPT,1);
mzte_ac_model_init(&acmType[col][l][CONTEXT_LZTR],2,NULL,ADAPT,1);
mzte_ac_model_init(&acmType[col][l][CONTEXT_LZTR_D],2,NULL,ADAPT,1);
mzte_ac_model_init(&acmSign[col][l],2,NULL,ADAPT,1);
}
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
int j = mzte_codec.m_SPlayer[col].SNRlayer.snr_image.wvtDecompNumBitPlanes[l];
int jj = mzte_codec.m_SPlayer[col].SNRlayer.snr_image.wvtDecompResNumBitPlanes ;
if ((acmBPMag[col][l]
=(ac_model *)calloc(WVTDECOMP_NUMBITPLANES(col,l),sizeof(ac_model)))==NULL&& WVTDECOMP_NUMBITPLANES(col,l)!=0) // modified by Sharp (99/5/10)
errorHandler("Can't alloc acmBPMag in probModelInitSQ.");
for(i=0;i<WVTDECOMP_NUMBITPLANES(col,l);i++)
{
mzte_ac_model_init(&acmBPMag[col][l][i],2,NULL,ADAPT,1);
acmBPMag[col][l][i].Max_frequency=Bitplane_Max_frequency;
}
if ((acmBPRes[col][l]
=(ac_model *)calloc(WVTDECOMP_RES_NUMBITPLANES(col),sizeof(ac_model)))==NULL&& WVTDECOMP_RES_NUMBITPLANES(col) != 0 ) // modified by Sharp (99/5/10)
errorHandler("Can't alloc acmBPRes in probModelInitMQ.");
for(i=0;i<WVTDECOMP_RES_NUMBITPLANES(col);i++)
{
mzte_ac_model_init(&acmBPRes[col][l][i],2,NULL,ADAPT,1);
acmBPRes[col][l][i].Max_frequency=Bitplane_Max_frequency;
}
}
}
Void CVTCCommon::probModelFreeMQ(Int col)
{
SNR_IMAGE *snr_image;
Int i,l;
snr_image=&(mzte_codec.m_SPlayer[col].SNRlayer.snr_image);
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
for (i=0; i<MAX_NUM_TYPE_CONTEXTS; ++i)
mzte_ac_model_done(&acmType[col][l][i]);
mzte_ac_model_done(&acmSign[col][l]);
}
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
for(i=0;i<WVTDECOMP_NUMBITPLANES(col,l);i++)
mzte_ac_model_done(&acmBPMag[col][l][i]);
free(acmBPMag[col][l]);
for(i=0;i<WVTDECOMP_RES_NUMBITPLANES(col);i++)
mzte_ac_model_done(&acmBPRes[col][l][i]);
free(acmBPRes[col][l]);
}
}
Void CVTCCommon::setProbModelsMQ(Int col)
{
Int l, i;
/* Set prob model type pointers */
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
for (i=0; i<MAX_NUM_TYPE_CONTEXTS; ++i)
acm_type[l][i]=&acmType[col][l][i];
acm_sign[l]=&acmSign[col][l];
}
acm_bpmag=acmBPMag[col];
acm_bpres=acmBPRes[col];
}
/*********************************************
Initialize max frequency for each ac model
*********************************************/
Void CVTCCommon::init_acm_maxf_enc()
{
Int c, l, i;
if(mzte_codec.m_iAcmMaxFreqChg == 0)
{
for (c=0; c<mzte_codec.m_iColors; c++)
{
for (l=0; l<mzte_codec.m_iWvtDecmpLev;++l)
{
for (i=0; i<MAX_NUM_TYPE_CONTEXTS; ++i)
// acmType[c][l][i].Max_frequency=DEFAULT_MAX_FREQ; // 1127
acmType[c][l][i].Max_frequency=Bitplane_Max_frequency;
acmSign[c][l].Max_frequency=DEFAULT_MAX_FREQ;
}
acmVZ[c].Max_frequency=DEFAULT_MAX_FREQ;
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -