mpeg1def.h

ESS3890+SL原代码（1*16内存）

/* Copyright 1996, ESS Technology, Inc.					*/
/* SCCSID @(#)mpeg1def.h	4.1 11/05/02 */ 

/*
 * Renamed from version 1.6 of mpeg1defs.h
 */

#ifndef _MPEG1DEFS_H_
#define _MPEG1DEFS_H_
/* to differentiate from mpeg2 */

#include "common.h"
/************************************************************
 * limits definition
 ************************************************************/
/* Video decode limits, double for videoCD2.0 */
#define MAX_HORIZ_SZ_E2 (704>>2)
#define MAX_HORIZ_SZ_E0 (352>>2)
#define MAX_VERT_SZ_E2 576
#define MAX_VERT_SZ_E0 288

/************************************************************
 * start code definition
 * also used as HuffState in mpeg1vid.c
 ************************************************************/
/*
 * Following defintions are the last byte of MPEG start codes and stream 
 * IDs. In the actual bit stream, each start code/stream ID is a 32b
 * value. The top 3 bytes are 000001h
 */
#define	MPEG_PIC_SC		0x00	/* Picture start code		*/
#define	MPEG_SLICE_SC		0x01	/* Slice start code (01-AF)	*/
#define	MPEG_UD_SC		0xb2	/* User data start code		*/
#define	MPEG_SEQ_SC		0xb3	/* Sequence header code		*/
#define	MPEG_EXT_SC		0xb5	/* Extension start code		*/
#define	MPEG_SEQ_EC		0xb7	/* Sequence end code		*/
#define	MPEG_GOP_SC		0xb8	/* Group start code		*/
#define	MPEG_PACK_SC		0xba	/* Pack start code		*/
#define	MPEG_RESV_SC		0xbc	/* Reserved stream start code	*/
#define	MPEG_PVT1_SC		0xbd	/* Private stream 1 start code	*/
#define	MPEG_PAD_SC		0xbe	/* Padding stream start code	*/
#define	MPEG_PVT2_SC		0xbf	/* Private stream 2 start code	*/

#define	MPEG_MIN_SLICE_SC	0x01	/* Min. slice start code	*/
#define	MPEG_MAX_SLICE_SC	0xaf	/* Max. slice start code	*/

#define	MPEG_MIN_PKT_ID		0xbc	/* Min. stream ID code		*/
#define	MPEG_MAX_PKT_ID		0xff	/* Max. stream ID code		*/

/************************************************************
 * vcx_status: bit representation
 ************************************************************/
#define vs_see_b9		0x1
#define vs_see_b7		0x2	/* Found sequence end code	*/
#define vs_play			0x4
#define vs_init			0x8
#define vs_seek			0x10
#define vs_pause		0x20

#endif /* _MPEG1DEFS_H_ */