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#ifndef VBI_H
#define VBI_H
#include "vt.h"
#include "dllist.h"
#include "cache.h"
#include "lang.h"
#define PLL_ADJUST 4
struct raw_page
{
struct vt_page page[1];
struct enhance enh[1];
};
struct vbi
{
int fd;
struct cache *cache;
struct dl_head clients[1];
// raw buffer management
int bufsize; // nr of bytes sent by this device
int bpl; // bytes per line
u32 seq;
// page assembly
struct raw_page rpage[8]; // one for each magazin
struct raw_page *ppage; // points to page of previous pkt0
// phase correction
int pll_fixed; // 0 = auto, 1..2*PLL_ADJUST+1 = fixed
int pll_adj;
int pll_dir;
int pll_cnt;
int pll_err, pll_lerr;
// v4l2 decoder data
int bpb; // bytes per bit * 2^16
int bp8bl, bp8bh; // bytes per 8-bit low/high
int soc, eoc; // start/end of clock run-in
};
struct vbi_client
{
struct dl_node node[1];
void (*handler)(void *data, struct vt_event *ev);
void *data;
};
struct vbi *vbi_open(char *vbi_dev_name, struct cache *ca, int fine_tune,
int big_buf);
void vbi_close(struct vbi *vbi);
void vbi_reset(struct vbi *vbi);
int vbi_add_handler(struct vbi *vbi, void *handler, void *data);
void vbi_del_handler(struct vbi *vbi, void *handler, void *data);
struct vt_page *vbi_query_page(struct vbi *vbi, int pgno, int subno);
void vbi_pll_reset(struct vbi *vbi, int fine_tune);
#endif
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