/*
* parse_desc_vbi_teletext.c
*
* Created by: si_desc.pl
* Created on: 20-May-2011
* Author: sdprice1
*/
// VERSION = 1.00
/*=============================================================================================*/
// USES
/*=============================================================================================*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <inttypes.h>
#include "parse_desc_vbi_teletext.h"
#include "descriptors/parse_desc.h"
/*=============================================================================================*/
// CONSTANTS
/*=============================================================================================*/
/*=============================================================================================*/
// MACROS
/*=============================================================================================*/
/*=============================================================================================*/
// FUNCTIONS
/*=============================================================================================*/
/* ----------------------------------------------------------------------- */
//
// VBI_teletext_descriptor() {
// descriptor_tag 8 uimsbf
// descriptor_length 8 uimsbf
// for (i=0;i<N;i++) {
// ISO_639_language_code 24 bslbf
// teletext_type 5 uimsbf
// teletext_magazine_number 3 uimsbf
// teletext_page_number 8 uimsbf
// }
// }
/* ----------------------------------------------------------------------- */
void print_vbi_teletext(struct Descriptor_vbi_teletext *vtd, int level)
{
struct list_head *item, *safe;
printf(" Descriptor: vbi_teletext [0x%02x]\n", vtd->descriptor_tag) ;
printf(" Length: %d\n", vtd->descriptor_length) ;
list_for_each_safe(item,safe,&vtd->vtd_array) {
struct VTD_entry *vtd_entry = list_entry(item, struct VTD_entry, next);
// VTD entry
printf(" -VTD entry-\n") ;
printf(" ISO_639_language_code = %d\n", vtd_entry->ISO_639_language_code) ;
printf(" teletext_type = %d\n", vtd_entry->teletext_type) ;
printf(" teletext_magazine_number = %d\n", vtd_entry->teletext_magazine_number) ;
printf(" teletext_page_number = %d\n", vtd_entry->teletext_page_number) ;
}
}
/* ----------------------------------------------------------------------- */
struct Descriptor *parse_vbi_teletext(struct TS_bits *bits, unsigned tag, unsigned len)
{
struct Descriptor_vbi_teletext *vtd ;
unsigned byte ;
int end_buff_len ;
vtd = (struct Descriptor_vbi_teletext *)malloc( sizeof(*vtd) ) ;
memset(vtd,0,sizeof(*vtd));
//== Parse data ==
INIT_LIST_HEAD(&vtd->next);
vtd->descriptor_tag = tag ; // already extracted by parse_desc()
vtd->descriptor_length = len ; // already extracted by parse_desc()
INIT_LIST_HEAD(&vtd->vtd_array) ;
end_buff_len = bits_len_calc(bits, -vtd->descriptor_length ) ;
while (bits->buff_len > end_buff_len)
{
struct VTD_entry *vtd_entry = malloc(sizeof(*vtd_entry));
memset(vtd_entry,0,sizeof(*vtd_entry));
list_add_tail(&vtd_entry->next,&vtd->vtd_array);
vtd_entry->ISO_639_language_code = bits_get(bits, 24) ;
vtd_entry->teletext_type = bits_get(bits, 5) ;
vtd_entry->teletext_magazine_number = bits_get(bits, 3) ;
vtd_entry->teletext_page_number = bits_get(bits, 8) ;
}
return (struct Descriptor *)vtd ;
}
/* ----------------------------------------------------------------------- */
void free_vbi_teletext(struct Descriptor_vbi_teletext *vtd)
{
struct list_head *item, *safe;
list_for_each_safe(item,safe,&vtd->vtd_array) {
struct VTD_entry *vtd_entry = list_entry(item, struct VTD_entry, next);
free(vtd_entry) ;
}
free(vtd) ;
}