avsync.h

sample on embedded linux

#ifndef __AVSYNC_H__
#define __AVSYNC_H__
#include <pthread.h>
#include <sys/time.h>
#include <time.h>
#include <sys/types.h>
#include <unistd.h>
#include "hi_rtp.h"
#include "avcommon.h"


/*定义vo显示时间，单位ms*/
#define VO_DISPLAY_TIME 80

/*定义音频解码时间，单位ms*/
#define AUDIO_DECODE_TIME 0

/*定义视频丢帧最小间隔*/
#define MIN_FRAME_DISCARD_INTERVAL 24

/*定义同步状态变迁门限，单位ms*/
#define MAX_V2A_SYNC    160
#define MIN_V2A_SYNC    -160
#define MAX_V2A_OUTSYNC 300
#define MIN_V2A_OUTSYNC -300

/*定义重新校正基准时间(音频pts)的间隔*/
#define AUDIO_RECHECK_COUNT 1000



/*定义同步状态*/
typedef enum {
    VIDEO_SYNC = 1,
    VIDEO_SLIGHT_QUICK = 2,
    VIDEO_SLIGHT_SLOW = 3,
    VIDEO_OUTSYNC_QUICK = 4,
    VIDEO_OUTSYNC_SLOW = 5
}AVSYNC_STATUS_E;

typedef struct{
    /*记录音频pts和对应系统时间*/
    HI_U64 system_time;/*单位us*/
    HI_U32 audio_pts;/*单位ms*/
}AVSYNC_TIMER_S;


HI_S32 audio_onrecv(IN struct hiRTP_RECV_S  * pRtpStream, 
                                        unsigned char * pBuff,  unsigned int len, int *ext_args);

/*timeval结构转化为U64的us数*/
static inline HI_U64 AVSYNC_Get_Time_Inusec(struct timeval tv) 
{
    HI_U64 systime;
    systime = tv.tv_sec*1000000 + tv.tv_usec;
    return systime;
}

void AVSYNC_Start(void);

void AVSYNC_Stop(void);

void AVSYNC_Frame2Vo_Start(VDEC_CHN ChanID);

void AVSYNC_Frame2Vo_Stop();

#endif