pthread_dec.h

1、基于韩国at2041芯片开发的Linux环境的DVR代码。 2、以原来代码进行了修改。 3、主要修改网络通讯出现异常问题处理 4、硬盘覆盖录像不起作用

/* set tabstop=4 */
/********************************************************************************
 *                                                                              *
 * Copyright(C) 2004  Penta-Micro                                               *
 *                                                                              *
 * ALL RIGHT RESERVED                                                           *
 *                                                                              *
 * This software is the property of Penta-Micro and is furnished under          *
 * license by Penta-Micro. This software may be used only in accordance         *	
 * with the terms of said license. This copyright notice may not be             *
 * removed, modified or obliterated without the prior written permission        *
 * of Penta-Micro.                                                              *
 *                                                                              *
 * This software may not be copyed, transmitted, provided to or otherwise       *
 * made available to any other person, company, corporation	or other entity     *
 * except as specified in the terms of said license.                            *
 *                                                                              *
 * No right, title, ownership or other interest in the software is hereby       *
 * granted or transferred.                                                      *
 *                                                                              *
 * The information contained herein is subject to change without notice and     *
 * should not be construed as a commitment by Penta-Micro.                      *
 *                                                                              *
 ********************************************************************************
 
  MODULE NAME:  PTHREAD_DEC.H
  
  REVISION HISTORY:
  
  Date       Ver Name                  Description
  ---------- --- --------------------- -----------------------------------------
 06/30/2004 2.0 CheulBeck(whitefe)       Created 
 ...............................................................................
 
  DESCRIPTION:
  
  This Module contains definition for MPEG Decoding function.
  
 ...............................................................................
*/    
 
#ifndef __PTHREAD_DEC_H
#define __PTHREAD_DEC_H


/** ************************************************************************* ** 
 ** includes
 ** ************************************************************************* **/
#include "typedef.h"

 
/** ************************************************************************* ** 
 ** defines
 ** ************************************************************************* **/

#define	DEC_MAX_BUF_SIZE		64*1024

#define  RX_BUF_SIZE			      2
/* definition for header size */
#define	PACK_HEADER_SIZE				16
#define	PROGRAM_STREAM_MAP_SIZE			276
#define	PES_PACKET_SIZE					32


/** ************************************************************************* ** 
 ** typedefs
 ** ************************************************************************* **/
/* type definition for picture info */ 
typedef struct {
	S32	size;
} SIZE_T;  
/* type definition for picture info */ 
typedef enum {
	F_START,
	F_CONTI,
	F_END
} FILE_INFO; 

/* type definition for picture info */
typedef struct __DEC_INFO_PICTURE__ {
	UNS32	cur_size;
	UNS32	prev_size;
	UNS32	time;
	UNS16	data_type;	
	UNS16	type;
	UNS16	conti;
	UNS16	motion_start;
	UNS16	motion;
	UNS16	sensor_start;
	UNS16	sensor;
} DEC_INFO_PICTURE; 

typedef struct __PACK_HEADER__ {
	UNS32	start_code;
	UNS32	system_clock_reference_base;
	UNS32	program_mux_rate;
	UNS32	stuffing_byte;
} PACK_HEADER;

typedef struct __ELEMENTARY_STREAM_MAP__ {
	UNS8	type;
	UNS8	id;
	UNS16	info_length;
	UNS8	mb_width;
	UNS8	mb_height;
	UNS16	reserved;
} ELEMENTARY_STREAM_MAP;

typedef struct __PROGRAM_STREAM_MAP__ {
	UNS32	start_code;
	UNS16	length;
	UNS8	version;
	UNS8	reserved_0;
	UNS16	info_length;
	UNS8	reserved_1[8];
	UNS16	elementary_stream_map_length;
	ELEMENTARY_STREAM_MAP	esm[32];
} PROGRAM_STREAM_MAP;

typedef struct __PES_PACKET__ {
	UNS32	start_code;
	UNS32	packet_length;
	UNS32	data_length;
	UNS32	pts;
	UNS32	dts;
	UNS32	prev_pes_packet_length;
	UNS32	cur_pes_packet_length;
	UNS32	time_code;
} PES_PACKET;

typedef struct __DEC_OBJECT__ {
	S8		fname_ps[32];			// file name for saving video stream 	
	FILE	*p_fd_ps;				// file descriptor for video stream
	UNS32	end_fp;					// file end pointer for video stream
	UNS16	play_mode;	
	UNS16	flag_first;				// for real time play at event playback
	UNS16	global_count;
	UNS16	flag_global;			// global flag
	UNS16	*p_demux_buf;			// buffer pointer to demux video stream
	DEC_INFO_PICTURE	dip;		// picture information for decoding
	DB_RECORD		db_rec;			// pointer to record db structure
	DECODER_PARAM	*pdp;
	STATE_DEC		*psd;	
	PACK_HEADER		tph;
	PROGRAM_STREAM_MAP	tpsm;
	PES_PACKET		tpp;
} DEC_OBJECT;


  
/** ************************************************************************* ** 
 ** function prototypes
 ** ************************************************************************* **/
void	            *pthread_dec(void *args);
RETURN	open_play_file(DEC_OBJECT *pdo);
RETURN	dec_set_param(DEC_OBJECT *pdo);
RETURN	dec_play(DEC_OBJECT *pdo);
void	            dec_stop(DEC_OBJECT *pdo);
RETURN	dec_ff(DEC_OBJECT *pdo);
RETURN	dec_slow(DEC_OBJECT *pdo);
RETURN	dec_rew(DEC_OBJECT *pdo);
RETURN	dec_step_forward(DEC_OBJECT *pdo);
RETURN	dec_step_backward(DEC_OBJECT *pdo);
RETURN	dec_pause(DEC_OBJECT *pdo);
FILE_INFO	arrange_picture_inform(DEC_OBJECT *pdo);
FILE_INFO	arrange_backward_picture_inform(DEC_OBJECT *pdo);
RETURN	get_picture_inform(DEC_OBJECT *pdo);
BOOL	      decoding_stream_filter(DEC_OBJECT *pdo);
RETURN	read_data_from_hdd(DEC_OBJECT *pdo);
RETURN	feed_data_to_decoder(DEC_OBJECT *pdo);
BOOL	      fast_forward_stream_filter(DEC_OBJECT *pdo);
BOOL	      fast_backward_stream_filter(DEC_OBJECT *pdo);
RETURN	select_next_file(DEC_OBJECT *pdo);
RETURN	select_previous_file(DEC_OBJECT *pdo);

#endif /* __PTHREAD_DEC_H */