/*
* parse_desc_vbi_data.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_data.h"
#include "descriptors/parse_desc.h"
/*=============================================================================================*/
// CONSTANTS
/*=============================================================================================*/
/*=============================================================================================*/
// MACROS
/*=============================================================================================*/
/*=============================================================================================*/
// FUNCTIONS
/*=============================================================================================*/
/* ----------------------------------------------------------------------- */
//
// VBI_data_descriptor() {
// descriptor_tag 8 uimsbf
// descriptor_length 8 uimsbf
// for (i=0; i<N; i++) {
// data_service_id 8 uimsbf
// data_service_descriptor_length 8 uimsbf
// if (data_service_id==0x01 ||
// for (i=0; i<N; i++) {
// reserved 2 bslbf
// field_parity 1 bslbf
// line_offset 5 uimsbf
// }
// } else {
// for (i=0; i<N; i++) {
// reserved 8 bslbf
// }
// }
// }
// }
/* ----------------------------------------------------------------------- */
void print_vbi_data(struct Descriptor_vbi_data *vdd, int level)
{
struct list_head *item, *safe;
struct list_head *item1, *safe1;
printf(" Descriptor: vbi_data [0x%02x]\n", vdd->descriptor_tag) ;
printf(" Length: %d\n", vdd->descriptor_length) ;
list_for_each_safe(item,safe,&vdd->vdd_array) {
struct VDD_entry *vdd_entry = list_entry(item, struct VDD_entry, next);
// VDD entry
printf(" -VDD entry-\n") ;
printf(" data_service_id = %d\n", vdd_entry->data_service_id) ;
printf(" data_service_descriptor_length = %d\n", vdd_entry->data_service_descriptor_length) ;
if (vdd_entry->data_service_id == 0x1 || vdd_entry->data_service_id == 0x2 || vdd_entry->data_service_id == 0x4 || vdd_entry->data_service_id == 0x5 || vdd_entry->data_service_id == 0x6 || vdd_entry->data_service_id == 0x7 )
{
list_for_each_safe(item1,safe1,&vdd_entry->vdd1_array) {
struct VDD1_entry *vdd1_entry = list_entry(item, struct VDD1_entry, next);
// VDD entry
printf(" -VDD entry-\n") ;
printf(" field_parity = %d\n", vdd1_entry->field_parity) ;
printf(" line_offset = %d\n", vdd1_entry->line_offset) ;
}
}
else
{
bits_dump("data_service_descriptor", vdd_entry->data_service_descriptor, vdd_entry->data_service_descriptor_length, 3) ;
}
}
}
/* ----------------------------------------------------------------------- */
struct Descriptor *parse_vbi_data(struct TS_bits *bits, unsigned tag, unsigned len)
{
struct Descriptor_vbi_data *vdd ;
unsigned byte ;
int end_buff_len ;
vdd = (struct Descriptor_vbi_data *)malloc( sizeof(*vdd) ) ;
memset(vdd,0,sizeof(*vdd));
//== Parse data ==
INIT_LIST_HEAD(&vdd->next);
vdd->descriptor_tag = tag ; // already extracted by parse_desc()
vdd->descriptor_length = len ; // already extracted by parse_desc()
INIT_LIST_HEAD(&vdd->vdd_array) ;
end_buff_len = bits_len_calc(bits, -vdd->descriptor_length ) ;
while (bits->buff_len > end_buff_len)
{
struct VDD_entry *vdd_entry = malloc(sizeof(*vdd_entry));
memset(vdd_entry,0,sizeof(*vdd_entry));
list_add_tail(&vdd_entry->next,&vdd->vdd_array);
vdd_entry->data_service_id = bits_get(bits, 8) ;
vdd_entry->data_service_descriptor_length = bits_get(bits, 8) ;
if (vdd_entry->data_service_id == 0x1 || vdd_entry->data_service_id == 0x2 || vdd_entry->data_service_id == 0x4 || vdd_entry->data_service_id == 0x5 || vdd_entry->data_service_id == 0x6 || vdd_entry->data_service_id == 0x7 )
{
INIT_LIST_HEAD(&vdd_entry->vdd1_array) ;
while (bits->buff_len >= 1)
{
struct VDD1_entry *vdd1_entry = malloc(sizeof(*vdd1_entry));
memset(vdd1_entry,0,sizeof(*vdd1_entry));
list_add_tail(&vdd1_entry->next,&vdd_entry->vdd1_array);
bits_skip(bits, 2) ;
vdd1_entry->field_parity = bits_get(bits, 1) ;
vdd1_entry->line_offset = bits_get(bits, 5) ;
}
}
else
{
end_buff_len = bits_len_calc(bits, -vdd_entry->data_service_descriptor_length) ;
vdd_entry->data_service_descriptor[0] = 0 ;
for (byte=0; (bits->buff_len > end_buff_len) && (byte < MAX_DATA_SERVICE_DESCRIPTOR_LEN); ++byte)
{
vdd_entry->data_service_descriptor[byte] = bits_get(bits, 8) ;
vdd_entry->data_service_descriptor[byte+1] = 0 ;
}
}
}
return (struct Descriptor *)vdd ;
}
/* ----------------------------------------------------------------------- */
void free_vbi_data(struct Descriptor_vbi_data *vdd)
{
struct list_head *item, *safe;
struct list_head *item1, *safe1;
list_for_each_safe(item,safe,&vdd->vdd_array) {
struct VDD_entry *vdd_entry = list_entry(item, struct VDD_entry, next);
list_for_each_safe(item1,safe1,&vdd_entry->vdd1_array) {
struct VDD1_entry *vdd1_entry = list_entry(item, struct VDD1_entry, next);
free(vdd1_entry) ;
}
free(vdd_entry) ;
}
free(vdd) ;
}