gusucode.com > 一个可以在局域网进行视频聊天的源代码 > 一个可以在局域网进行视频聊天的源代码/VoIP/decoder/DGlobal.cpp
//////////////////////////////////////////////////////////////////////////// // // // 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}, };