/* mpeg2dec.h, MPEG specific defines                                        */

/* 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.
 *
 */

#define ERROR (-1)

#define PICTURE_START_CODE 0x100
#define SLICE_MIN_START    0x101
#define SLICE_MAX_START    0x1AF
#define USER_START_CODE    0x1B2
#define SEQ_START_CODE     0x1B3
#define EXT_START_CODE     0x1B5
#define SEQ_END_CODE       0x1B7
#define GOP_START_CODE     0x1B8

#define ISO_END_CODE       0x1B9
#define PACK_START_CODE    0x1BA
#define SYSTEM_START_CODE  0x1BB

/* scalable_mode */
#define SC_NONE 0
#define SC_DP   1
#define SC_SPAT 2
#define SC_SNR  3
#define SC_TEMP 4

/* picture coding type */
#define I_TYPE 1
#define P_TYPE 2
#define B_TYPE 3
#define D_TYPE 4

/* picture structure */
#define TOP_FIELD     1
#define BOTTOM_FIELD  2
#define FRAME_PICTURE 3

/* macroblock type */
#define MB_INTRA    1
#define MB_PATTERN  2
#define MB_BACKWARD 4
#define MB_FORWARD  8
#define MB_QUANT    16
#define MB_WEIGHT   32
#define MB_CLASS4   64

/* motion_type */
#define MC_FIELD 1
#define MC_FRAME 2
#define MC_16X8  2
#define MC_DMV   3

/* mv_format */
#define MV_FIELD 0
#define MV_FRAME 1

/* chroma_format */
#define CHROMA420 1
#define CHROMA422 2
#define CHROMA444 3

/* extension start code IDs */

#define SEQ_ID       1
#define DISP_ID      2
#define QUANT_ID     3
#define SEQSCAL_ID   5
#define PANSCAN_ID   7
#define CODING_ID    8
#define SPATSCAL_ID  9
#define TEMPSCAL_ID 10