/* global.h, global variables */ /* * All modifications (mpeg2decode -> mpeg2play) are * Copyright (C) 1994, Stefan Eckart. All Rights Reserved. */ /* Copyright (C) 1994, MPEG Software Simulation Group. All Rights Reserved. */ /* * Disclaimer of Warranty * * These software programs are available to the user without any license fee or * royalty on an "as is" basis. The MPEG Software Simulation Group disclaims * any and all warranties, whether express, implied, or statuary, including any * implied warranties or merchantability or of fitness for a particular * purpose. In no event shall the copyright-holder be liable for any * incidental, punitive, or consequential damages of any kind whatsoever * arising from the use of these programs. * * This disclaimer of warranty extends to the user of these programs and user's * customers, employees, agents, transferees, successors, and assigns. * * The MPEG Software Simulation Group does not represent or warrant that the * programs furnished hereunder are free of infringement of any third-party * patents. * * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware, * are subject to royalty fees to patent holders. Many of these patents are * general enough such that they are unavoidable regardless of implementation * design. * */ #include "mpeg2dec.h" /* choose between declaration (GLOBAL undefined) * and definition (GLOBAL defined) * GLOBAL is defined in exactly one file (mpeg2dec.c) */ #ifndef GLOBAL #define EXTERN extern #else #define EXTERN #endif /* prototypes of global functions */ /* comply.c */ void sequence_layer_checks _ANSI_ARGS_((void)); void picture_layer_checks _ANSI_ARGS_((void)); /* getbits.c */ void initbits _ANSI_ARGS_((void)); void fillbfr _ANSI_ARGS_((void)); unsigned int showbits _ANSI_ARGS_((int n)); unsigned int getbits1 _ANSI_ARGS_((void)); void flushbits _ANSI_ARGS_((int n)); unsigned int getbits _ANSI_ARGS_((int n)); /* getblk.c */ void getintrablock _ANSI_ARGS_((int comp, int dc_dct_pred[])); void getinterblock _ANSI_ARGS_((int comp)); void getmpg2intrablock _ANSI_ARGS_((int comp, int dc_dct_pred[])); void getmpg2interblock _ANSI_ARGS_((int comp)); /* gethdr.c */ int getheader _ANSI_ARGS_((void)); void startcode _ANSI_ARGS_((void)); int getslicehdr _ANSI_ARGS_((void)); /* getpic.c */ void getpicture _ANSI_ARGS_((int framenum)); void putlast _ANSI_ARGS_((int framenum)); /* getvlc.c */ int getMBtype _ANSI_ARGS_((void)); int getMV _ANSI_ARGS_((void)); int getDMV _ANSI_ARGS_((void)); int getCBP _ANSI_ARGS_((void)); int getMBA _ANSI_ARGS_((void)); int getDClum _ANSI_ARGS_((void)); int getDCchrom _ANSI_ARGS_((void)); /* idct.c */ void idct _ANSI_ARGS_((short *block)); void init_idct _ANSI_ARGS_((void)); /* idctref.c */ void init_idctref _ANSI_ARGS_((void)); void idctref _ANSI_ARGS_((short *block)); /* motion.c */ void motion_vectors _ANSI_ARGS_((int PMV[2][2][2], int dmvector[2], int mv_field_sel[2][2], int s, int mv_count, int mv_format, int h_r_size, int v_r_size, int dmv, int mvscale)); void motion_vector _ANSI_ARGS_((int *PMV, int *dmvector, int h_r_size, int v_r_size, int dmv, int mvscale, int full_pel_vector)); void calc_DMV _ANSI_ARGS_((int DMV[][2], int *dmvector, int mvx, int mvy)); /* mpeg2dec.c */ void error _ANSI_ARGS_((char *text)); void warning _ANSI_ARGS_((char *text)); void printbits _ANSI_ARGS_((int code, int bits, int len)); /* recon.c */ void reconstruct _ANSI_ARGS_((int bx, int by, int mb_type, int motion_type, int PMV[2][2][2], int mv_field_sel[2][2], int dmvector[2], int stwtype)); /* spatscal.c */ void getspatref _ANSI_ARGS_((void)); /* store.c */ void storeframe _ANSI_ARGS_((unsigned char *src[], int frame)); /* display.c */ void init_display _ANSI_ARGS_((char *name)); void exit_display _ANSI_ARGS_((void)); void display_second_field _ANSI_ARGS_((void)); void dither _ANSI_ARGS_((unsigned char *src[])); void init_dither _ANSI_ARGS_((void)); /* global variables */ EXTERN char version[] #ifdef GLOBAL ="mpeg2play V1.1a, 94/07/04" #endif ; EXTERN char author[] #ifdef GLOBAL ="(C) 1994, Stefan Eckart & MPEG Software Simulation Group" #endif ; /* zig-zag scan */ EXTERN unsigned char zig_zag_scan[64] #ifdef GLOBAL = { 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 } #endif ; /* alternate scan */ EXTERN unsigned char alternate_scan[64] #ifdef GLOBAL = { 0,8,16,24,1,9,2,10,17,25,32,40,48,56,57,49, 41,33,26,18,3,11,4,12,19,27,34,42,50,58,35,43, 51,59,20,28,5,13,6,14,21,29,36,44,52,60,37,45, 53,61,22,30,7,15,23,31,38,46,54,62,39,47,55,63 } #endif ; /* default intra quantization matrix */ EXTERN unsigned char default_intra_quantizer_matrix[64] #ifdef GLOBAL = { 8, 16, 19, 22, 26, 27, 29, 34, 16, 16, 22, 24, 27, 29, 34, 37, 19, 22, 26, 27, 29, 34, 34, 38, 22, 22, 26, 27, 29, 34, 37, 40, 22, 26, 27, 29, 32, 35, 40, 48, 26, 27, 29, 32, 35, 40, 48, 58, 26, 27, 29, 34, 38, 46, 56, 69, 27, 29, 35, 38, 46, 56, 69, 83 } #endif ; /* non-linear quantization coefficient table */ EXTERN unsigned char non_linear_mquant_table[32] #ifdef GLOBAL = { 0, 1, 2, 3, 4, 5, 6, 7, 8,10,12,14,16,18,20,22, 24,28,32,36,40,44,48,52, 56,64,72,80,88,96,104,112 } #endif ; /* 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) */ EXTERN int convmat[8][4] #ifdef GLOBAL = { {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) */ } #endif ; EXTERN int quiet; #ifdef TRACE EXTERN int trace; #endif EXTERN char errortext[256]; EXTERN unsigned char *refframe[3],*oldrefframe[3],*auxframe[3],*newframe[3]; EXTERN unsigned char *clp; EXTERN int horizontal_size,vertical_size,mb_width,mb_height; EXTERN int coded_picture_width, coded_picture_height; EXTERN int chroma_format,chrom_width,chrom_height,blk_cnt; EXTERN int pict_type; EXTERN int forw_r_size,back_r_size; EXTERN int full_forw,full_back; EXTERN int fault; EXTERN int verbose; EXTERN int prog_seq; EXTERN int h_forw_r_size,v_forw_r_size,h_back_r_size,v_back_r_size; EXTERN int dc_prec,pict_struct,topfirst,frame_pred_dct,conceal_mv; EXTERN int intravlc,repeatfirst,prog_frame; EXTERN int secondfield; EXTERN int stwc_table_index,llw,llh,hm,hn,vm,vn; EXTERN int lltempref,llx0,lly0,llprog_frame,llfieldsel; EXTERN unsigned char *llframe0[3],*llframe1[3]; EXTERN short *lltmp; EXTERN char *llinputname; EXTERN int twostreams,sflag; EXTERN int matrix_coefficients; EXTERN int sysstream; /* output */ EXTERN int outtype; #define T_X11 0 /* layer specific variables (needed for SNR and DP scalability) */ EXTERN struct layer_data { /* bit input */ int infile; unsigned char rdbfr[2048]; unsigned char *rdptr; unsigned int bfr; int incnt; int bitcnt; unsigned char *rdmax; /* sequence header */ int intra_quantizer_matrix[64],non_intra_quantizer_matrix[64]; int chroma_intra_quantizer_matrix[64],chroma_non_intra_quantizer_matrix[64]; int mpeg2; /* sequence scalable extension */ int scalable_mode; /* picture coding extension */ int qscale_type,altscan; /* picture spatial scalable extension */ int pict_scal; /* slice/macroblock */ int pri_brk; int quant_scale; short block[12][64]; } base, enhan, *ld;