pts.h

ESS3890+SL原代码（1*16内存）

/* Copyright 1996, ESS Technology, Inc.                                 */
/* SCCSID @(#)pts.h	4.4 11/05/04 */

/* Based on pts.h	3.1 08/27/01 */

/*
 * $Log$
 */

#ifdef MPEG_AV_SYNC
#define RESYNC_ON_INIT          896
#define RESYNC_INFINITE         (ABV_size * 15/16)

/* We store the most significant 32 bits of the PTS.
   Also we measure in 45 Khz. For NTSC, successive pictures
   should therefore differ in PTS by 3003.
*/

typedef struct {
    uint pts;
    int  wrptr;
} PTS_entry;

GBLDEF(int do_av_sync, 0);
GBLDEF(volatile unsigned first_APTS,    -1);  /* First Audio pts */
GBLDEF(volatile unsigned first_VPTS,    -1);  /* First video pts*/
GBLDEF(int PTS_per_frame, 1501);               /* 3003/2 */
GBLDEF(int PTS_units_per_256_ABV_dwords, 1646);/* 256*32*45000/224000 */
GBLDEF(volatile  int I_at_abv, -1);           /* ABV wrptr when obtaining APTS*/
GBLDEF(volatile  int I_at_vbv, -1);
GBLDEF(int PTS_diff, 0);
GBLDEF0(unsigned PTS_vid_current);            /* current Video dts */
GBLDEF0(volatile int take_out_time);
GBLDEF0(int PCM_resync);
GBLDEF0(unsigned video_delay);                /* video delay */
GBLDEF0(int audio_too_early);        /* If audio data is too much, we better*/

/* For customer */
GBLDEF(int  default_av_offset, 2063);         /* Audio/Video sync offset */
GBLDEF(int  default_av_margin, 6750);         /* Audio/Video resync margin*/
#endif

#if defined(ABNORMAL_VCD) || defined(ANTI_SHOCK)
GBLDEF0	(int PTS_start); /* start of track PTS_vid */
#endif
GBLDEF0(unsigned PTS_aud);  /* Audio pts */
GBLDEF0(unsigned PTS_vid);  /* Video pts */
GBLDEF0(unsigned PTS_last); /* Last pts type; 1=A, 2=V */
GBLDEF(int PTS_xsit, -1);       /* Take note: pts type changed! */
GBLDEF(int PTS_units_per_256_audio_samples, 240);