mpeg2vid.h

一个两碟控制的VCD的代码,两碟之间的转动及连续播放,已大量生产的CODE.

/* Copyright 1996, ESS Technology, Inc.					*/
/* SCCSID @(#)mpeg2vid.h	1.8 10/24/97 */

/*
 * $Log$
 */

/************************************************************
 * global variables
 ************************************************************/
GBLDEF_0(int VID_decoding_in_progress, 0);
GBLDEF_0(int VID_pic_rate, 0);
GBLDEF_0(int VID_pic_type, 0);
GBLDEF_0(int VID_top_field_first[4], {0});
GBLDEF_0(int VID_field_repeat[4], {0});
GBLDEF_0(int VID_current_row, 0);		 /* not used now */

/************************************************************
 Exported functions.
 ************************************************************/
EXPORT void VID_init(void);
EXPORT int VID_decode(void);

/************************************************************
 * Picture coding type vars - MPEG-2, p.47 
 ************************************************************/
typedef enum {
    PIC_RESERVED1		=0,
    PIC_INTRA			=1,
    PIC_PRED			=2,
    PIC_BIDER 			=3,
    PIC_DC 			=4,
    PIC_RESERVED2		=5,
    PIC_RESERVED3		=6,
    PIC_RESERVED4		=7,
} PIC_TYPE;