/* mpeg2dec.h, MPEG specific defines                                        */

/* Copyright (C) 1996, 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_START_CODE_MIN    0x101
#define SLICE_START_CODE_MAX    0x1AF
#define USER_DATA_START_CODE    0x1B2
#define SEQUENCE_HEADER_CODE    0x1B3
#define SEQUENCE_ERROR_CODE     0x1B4
#define EXTENSION_START_CODE    0x1B5
#define SEQUENCE_END_CODE       0x1B7
#define GROUP_START_CODE        0x1B8
#define SYSTEM_START_CODE_MIN   0x1B9
#define SYSTEM_START_CODE_MAX   0x1FF

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

#define VIDEO_ELEMENTARY_STREAM 0x1e0

/* 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 MACROBLOCK_INTRA                        1
#define MACROBLOCK_PATTERN                      2
#define MACROBLOCK_MOTION_BACKWARD              4
#define MACROBLOCK_MOTION_FORWARD               8
#define MACROBLOCK_QUANT                        16
#define SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG       32
#define PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS 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 SEQUENCE_EXTENSION_ID                    1
#define SEQUENCE_DISPLAY_EXTENSION_ID            2
#define QUANT_MATRIX_EXTENSION_ID                3
#define COPYRIGHT_EXTENSION_ID                   4
#define SEQUENCE_SCALABLE_EXTENSION_ID           5
#define PICTURE_DISPLAY_EXTENSION_ID             7
#define PICTURE_CODING_EXTENSION_ID              8
#define PICTURE_SPATIAL_SCALABLE_EXTENSION_ID    9
#define PICTURE_TEMPORAL_SCALABLE_EXTENSION_ID  10

#define ZIG_ZAG                                  0

#define PROFILE_422                             (128+5)
#define MAIN_LEVEL                              8

/* Layers: used by Verbose_Flag, Verifier_Flag, Stats_Flag, and Trace_Flag */
#define NO_LAYER                                0
#define SEQUENCE_LAYER                          1
#define PICTURE_LAYER                           2
#define SLICE_LAYER                             3    
#define MACROBLOCK_LAYER                        4    
#define BLOCK_LAYER                             5
#define EVENT_LAYER                             6
#define ALL_LAYERS                              7



#define FILENAME_LENGTH                       256




#define MB_WEIGHT                  32
#define MB_CLASS4                  64