/*
* parse_desc_subtitling.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_subtitling.h"
#include "descriptors/parse_desc.h"
/*=============================================================================================*/
// CONSTANTS
/*=============================================================================================*/
/*=============================================================================================*/
// MACROS
/*=============================================================================================*/
/*=============================================================================================*/
// FUNCTIONS
/*=============================================================================================*/
/* ----------------------------------------------------------------------- */
//
// subtitling_descriptor(){
// descriptor_tag 8 uimsbf
// descriptor_length 8 uimsbf
// for (i= 0;i<N;I++){
// ISO_639_language_code 24 bslbf
// subtitling_type 8 bslbf
// composition_page_id 16 bslbf
// ancillary_page_id 16 bslbf
// }
// }
/* ----------------------------------------------------------------------- */
void print_subtitling(struct Descriptor_subtitling *sd, int level)
{
struct list_head *item, *safe;
printf(" Descriptor: subtitling [0x%02x]\n", sd->descriptor_tag) ;
printf(" Length: %d\n", sd->descriptor_length) ;
list_for_each_safe(item,safe,&sd->sd_array) {
struct SD_entry *sd_entry = list_entry(item, struct SD_entry, next);
// SD entry
printf(" -SD entry-\n") ;
printf(" ISO_639_language_code = %d\n", sd_entry->ISO_639_language_code) ;
printf(" subtitling_type = %d\n", sd_entry->subtitling_type) ;
printf(" composition_page_id = %d\n", sd_entry->composition_page_id) ;
printf(" ancillary_page_id = %d\n", sd_entry->ancillary_page_id) ;
}
}
/* ----------------------------------------------------------------------- */
struct Descriptor *parse_subtitling(struct TS_bits *bits, unsigned tag, unsigned len)
{
struct Descriptor_subtitling *sd ;
unsigned byte ;
int end_buff_len ;
sd = (struct Descriptor_subtitling *)malloc( sizeof(*sd) ) ;
memset(sd,0,sizeof(*sd));
//== Parse data ==
INIT_LIST_HEAD(&sd->next);
sd->descriptor_tag = tag ; // already extracted by parse_desc()
sd->descriptor_length = len ; // already extracted by parse_desc()
INIT_LIST_HEAD(&sd->sd_array) ;
end_buff_len = bits_len_calc(bits, -sd->descriptor_length ) ;
while (bits->buff_len > end_buff_len)
{
struct SD_entry *sd_entry = malloc(sizeof(*sd_entry));
memset(sd_entry,0,sizeof(*sd_entry));
list_add_tail(&sd_entry->next,&sd->sd_array);
sd_entry->ISO_639_language_code = bits_get(bits, 24) ;
sd_entry->subtitling_type = bits_get(bits, 8) ;
sd_entry->composition_page_id = bits_get(bits, 16) ;
sd_entry->ancillary_page_id = bits_get(bits, 16) ;
}
return (struct Descriptor *)sd ;
}
/* ----------------------------------------------------------------------- */
void free_subtitling(struct Descriptor_subtitling *sd)
{
struct list_head *item, *safe;
list_for_each_safe(item,safe,&sd->sd_array) {
struct SD_entry *sd_entry = list_entry(item, struct SD_entry, next);
free(sd_entry) ;
}
free(sd) ;
}