www.gusucode.com > VC++ 视频采集与压缩、音频采集、加扰和解绕-源码程序 > VC++ 视频采集与压缩、音频采集、加扰和解绕-源码程序/code/VideoNet_src/decoder/DGlobal.cpp
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////////////////////////////////////////////////////////////////////////////
//
//
// Project : VideoNet version 1.1.
// Description : Peer to Peer Video Conferencing over the LAN.
// Author : Nagareshwar Y Talekar ( nsry2002@yahoo.co.in)
// Date : 15-6-2004.
//
// This is the modified version of tmndecode (H.263 decoder)
// written by Karl & Robert.It was in ANSI C. I have converted into C++
// so that it can be integrated into any windows application. I have
// removed some of the files which had display and file storing
// functions.I have removed the unnecessary code and also added some
// new files..
// Original library dealt with files. Input & Output , both were files.
// I have done some major changes so that it can be used for real time
// decoding process. Now one can use this library for decoding H263 frames.
//
//
// File description :
// Name : DGlobal.cpp
// Details : Definitions of global variables.
//
/////////////////////////////////////////////////////////////////////////////
#include "DGlobal.h"
// Variable definitions....
char version[200]="tmndecode v1.7\n(C) 1995, 1996 Telenor R&D\n";
int quiet=1; //keep quiet
int trace=0; //don't trace....
char errortext[256];
unsigned char *refframe[3],*oldrefframe[3],*bframe[3],*newframe[3];
unsigned char *edgeframe[3], *edgeframeorig[3], *exnewframe[3];
int MV[2][5][MBR+1][MBC+2];
int modemap[MBR+1][MBC+2];
unsigned char *clp;
int horizontal_size,vertical_size,mb_width,mb_height;
int coded_picture_width, coded_picture_height;
int chrom_width,chrom_height,blk_cnt;
int pict_type,newgob;
int mv_outside_frame,syntax_arith_coding,adv_pred_mode,pb_frame;
int long_vectors;
int fault,expand;
int verbose;
int refidct;
int matrix_coefficients;
int temp_ref, prev_temp_ref, quant, source_format;
int framerate;
unsigned char *cframe=NULL;
int csize;
int cindex;
struct ld base,*ld;
unsigned char *yp,*up,*vp;
// log file for decoder...
FILE *dlog=NULL;
#ifndef WIN32
struct timeval tftarget;
#else
unsigned int targetTime;
#endif
int roundtab[16]= {0,0,0,1,1,1,1,1,1,1,1,1,1,1,2,2};
//output
char *outputname;
int outtype;
int trd, trb, bscan, bquant;
int bscan_tab[]= {2,4,6,8};
int bquant_tab[]= {5,6,7,8};
// zig-zag scan
unsigned char zig_zag_scan[64]=
{
0,1,8,16,9,2,3,10,17,24,32,25,18,11,4,5,
12,19,26,33,40,48,41,34,27,20,13,6,7,14,21,28,
35,42,49,56,57,50,43,36,29,22,15,23,30,37,44,51,
58,59,52,45,38,31,39,46,53,60,61,54,47,55,62,63
};
// /*color space conversion coefficients
// *
// * entries are {crv,cbu,cgu,cgv}
// *
// * crv=(255/224)*65536*(1-cr)/0.5
// * cbu=(255/224)*65536*(1-cb)/0.5
// * cgu=(255/224)*65536*(cb/cg)*(1-cb)/0.5
// * cgv=(255/224)*65536*(cr/cg)*(1-cr)/0.5
// *
// * where Y=cr*R+cg*G+cb*B (cr+cg+cb=1)
//
int convmat[8][4]=
{
{117504, 138453, 13954, 34903}, //* no sequence_display_extension
{117504, 138453, 13954, 34903}, //* ITU-R Rec. 709 (1990)
{104597, 132201, 25675, 53279}, //* unspecified
{104597, 132201, 25675, 53279}, //* reserved
{104448, 132798, 24759, 53109}, //* FCC
{104597, 132201, 25675, 53279}, //* ITU-R Rec. 624-4 System B, G
{104597, 132201, 25675, 53279}, //* SMPTE 170M
{117579, 136230, 16907, 35559} //* SMPTE 240M (1987)
};
int OM[5][8][8]=
{
{
{4,5,5,5,5,5,5,4},
{5,5,5,5,5,5,5,5},
{5,5,6,6,6,6,5,5},
{5,5,6,6,6,6,5,5},
{5,5,6,6,6,6,5,5},
{5,5,6,6,6,6,5,5},
{5,5,5,5,5,5,5,5},
{4,5,5,5,5,5,5,4},
},{
{2,2,2,2,2,2,2,2},
{1,1,2,2,2,2,1,1},
{1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1},
{0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0},
},{
{0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0},
{1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1},
{1,1,2,2,2,2,1,1},
{2,2,2,2,2,2,2,2},
},{
{0,0,0,0,1,1,1,2},
{0,0,0,0,1,1,2,2},
{0,0,0,0,1,1,2,2},
{0,0,0,0,1,1,2,2},
{0,0,0,0,1,1,2,2},
{0,0,0,0,1,1,2,2},
{0,0,0,0,1,1,2,2},
{0,0,0,0,1,1,1,2},
},{
{2,1,1,1,0,0,0,0},
{2,2,1,1,0,0,0,0},
{2,2,1,1,0,0,0,0},
{2,2,1,1,0,0,0,0},
{2,2,1,1,0,0,0,0},
{2,2,1,1,0,0,0,0},
{2,2,1,1,0,0,0,0},
{2,1,1,1,0,0,0,0},
}
};
//
VLCtabI DCT3Dtab0[] = {
{4225,7}, {4209,7}, {4193,7}, {4177,7}, {193,7}, {177,7},
{161,7}, {4,7}, {4161,6}, {4161,6}, {4145,6}, {4145,6},
{4129,6}, {4129,6}, {4113,6}, {4113,6}, {145,6}, {145,6},
{129,6}, {129,6}, {113,6}, {113,6}, {97,6}, {97,6},
{18,6}, {18,6}, {3,6}, {3,6}, {81,5}, {81,5},
{81,5}, {81,5}, {65,5}, {65,5}, {65,5}, {65,5},
{49,5}, {49,5}, {49,5}, {49,5}, {4097,4}, {4097,4},
{4097,4}, {4097,4}, {4097,4}, {4097,4}, {4097,4}, {4097,4},
{1,2}, {1,2}, {1,2}, {1,2}, {1,2}, {1,2},
{1,2}, {1,2}, {1,2}, {1,2}, {1,2}, {1,2},
{1,2}, {1,2}, {1,2}, {1,2}, {1,2}, {1,2},
{1,2}, {1,2}, {1,2}, {1,2}, {1,2}, {1,2},
{1,2}, {1,2}, {1,2}, {1,2}, {1,2}, {1,2},
{1,2}, {1,2}, {17,3}, {17,3}, {17,3}, {17,3},
{17,3}, {17,3}, {17,3}, {17,3}, {17,3}, {17,3},
{17,3}, {17,3}, {17,3}, {17,3}, {17,3}, {17,3},
{33,4}, {33,4}, {33,4}, {33,4}, {33,4}, {33,4},
{33,4}, {33,4}, {2,4}, {2,4},{2,4},{2,4},
{2,4}, {2,4},{2,4},{2,4},
};
VLCtabI DCT3Dtab1[] = {
{9,10}, {8,10}, {4481,9}, {4481,9}, {4465,9}, {4465,9},
{4449,9}, {4449,9}, {4433,9}, {4433,9}, {4417,9}, {4417,9},
{4401,9}, {4401,9}, {4385,9}, {4385,9}, {4369,9}, {4369,9},
{4098,9}, {4098,9}, {353,9}, {353,9}, {337,9}, {337,9},
{321,9}, {321,9}, {305,9}, {305,9}, {289,9}, {289,9},
{273,9}, {273,9}, {257,9}, {257,9}, {241,9}, {241,9},
{66,9}, {66,9}, {50,9}, {50,9}, {7,9}, {7,9},
{6,9}, {6,9}, {4353,8}, {4353,8}, {4353,8}, {4353,8},
{4337,8}, {4337,8}, {4337,8}, {4337,8}, {4321,8}, {4321,8},
{4321,8}, {4321,8}, {4305,8}, {4305,8}, {4305,8}, {4305,8},
{4289,8}, {4289,8}, {4289,8}, {4289,8}, {4273,8}, {4273,8},
{4273,8}, {4273,8}, {4257,8}, {4257,8}, {4257,8}, {4257,8},
{4241,8}, {4241,8}, {4241,8}, {4241,8}, {225,8}, {225,8},
{225,8}, {225,8}, {209,8}, {209,8}, {209,8}, {209,8},
{34,8}, {34,8}, {34,8}, {34,8}, {19,8}, {19,8},
{19,8}, {19,8}, {5,8}, {5,8}, {5,8}, {5,8},
};
VLCtabI DCT3Dtab2[] = {
{4114,11}, {4114,11}, {4099,11}, {4099,11}, {11,11}, {11,11},
{10,11}, {10,11}, {4545,10}, {4545,10}, {4545,10}, {4545,10},
{4529,10}, {4529,10}, {4529,10}, {4529,10}, {4513,10}, {4513,10},
{4513,10}, {4513,10}, {4497,10}, {4497,10}, {4497,10}, {4497,10},
{146,10}, {146,10}, {146,10}, {146,10}, {130,10}, {130,10},
{130,10}, {130,10}, {114,10}, {114,10}, {114,10}, {114,10},
{98,10}, {98,10}, {98,10}, {98,10}, {82,10}, {82,10},
{82,10}, {82,10}, {51,10}, {51,10}, {51,10}, {51,10},
{35,10}, {35,10}, {35,10}, {35,10}, {20,10}, {20,10},
{20,10}, {20,10}, {12,11}, {12,11}, {21,11}, {21,11},
{369,11}, {369,11}, {385,11}, {385,11}, {4561,11}, {4561,11},
{4577,11}, {4577,11}, {4593,11}, {4593,11}, {4609,11}, {4609,11},
{22,12}, {36,12}, {67,12}, {83,12}, {99,12}, {162,12},
{401,12}, {417,12}, {4625,12}, {4641,12}, {4657,12}, {4673,12},
{4689,12}, {4705,12}, {4721,12}, {4737,12}, {7167,7},
{7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7},
{7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7},
{7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7},
{7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7},
{7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7}, {7167,7},
{7167,7}, };