/*
* parse_si_pat.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_si_pat.h"
#include "descriptors/parse_desc.h"
/*=============================================================================================*/
// CONSTANTS
/*=============================================================================================*/
/*=============================================================================================*/
// MACROS
/*=============================================================================================*/
/*=============================================================================================*/
// FUNCTIONS
/*=============================================================================================*/
/* ----------------------------------------------------------------------- */
//
// program_association_section() {
// table_id 8 uimsbf
// section_syntax_indicator 1 bslbf
// '0' 1 bslbf
// reserved 2 bslbf
// section_length 12 uimsbf
// transport_stream_id 16 uimsbf
// reserved 2 bslbf
// version_number 5 uimsbf
// current_next_indicator 1 bslbf
// section_number 8 uimsbf
// last_section_number 8 uimsbf
// for (i = 0; i < N; i++) {
// program_number 16 uimsbf
// reserved 3 bslbf
// if (program_number = = '0') {
// network_PID 13 uimsbf
// } else {
// program_map_PID 13 uimsbf
// }
// }
// CRC_32 32 rpchof
// }
/* ----------------------------------------------------------------------- */
void print_pat(struct Section_program_association *pat)
{
struct list_head *item, *safe;
int end_buff_len ;
printf("Table: program_association [0x%02x]\n", pat->table_id) ;
printf("Length: %d\n", pat->section_length) ;
//== data ==
printf("section_syntax_indicator = %d\n", pat->section_syntax_indicator) ;
printf("transport_stream_id = %d\n", pat->transport_stream_id) ;
printf("version_number = %d\n", pat->version_number) ;
printf("current_next_indicator = %d\n", pat->current_next_indicator) ;
printf("section_number = %d\n", pat->section_number) ;
printf("last_section_number = %d\n", pat->last_section_number) ;
list_for_each_safe(item,safe,&pat->pat_array) {
struct PAT_entry *pat_entry = list_entry(item, struct PAT_entry, next);
// PAT entry
printf(" -PAT entry-\n") ;
printf(" program_number = %d\n", pat_entry->program_number) ;
if (pat_entry->program_number == 0x0 )
{
printf(" network_PID = %d\n", pat_entry->network_PID) ;
}
else
{
printf(" program_map_PID = %d\n", pat_entry->program_map_PID) ;
}
}
}
/* ----------------------------------------------------------------------- */
void parse_pat(struct TS_reader *tsreader, struct TS_state *tsstate, struct TS_bits *bits,
Section_handler handler, struct Section_decode_flags *flags)
{
struct Section_program_association pat ;
struct list_head *item, *safe;
unsigned byte ;
int end_buff_len ;
//== Parse data ==
pat.table_id = bits_get(bits, 8) ;
pat.section_syntax_indicator = bits_get(bits, 1) ;
bits_skip(bits, 1) ;
bits_skip(bits, 2) ;
pat.section_length = bits_get(bits, 12) ;
pat.transport_stream_id = bits_get(bits, 16) ;
bits_skip(bits, 2) ;
pat.version_number = bits_get(bits, 5) ;
pat.current_next_indicator = bits_get(bits, 1) ;
pat.section_number = bits_get(bits, 8) ;
pat.last_section_number = bits_get(bits, 8) ;
INIT_LIST_HEAD(&pat.pat_array) ;
while (bits->buff_len >= 4)
{
struct PAT_entry *pat_entry = malloc(sizeof(*pat_entry));
memset(pat_entry,0,sizeof(*pat_entry));
list_add_tail(&pat_entry->next,&pat.pat_array);
pat_entry->program_number = bits_get(bits, 16) ;
bits_skip(bits, 3) ;
if (pat_entry->program_number == 0x0 )
{
pat_entry->network_PID = bits_get(bits, 13) ;
}
else
{
pat_entry->program_map_PID = bits_get(bits, 13) ;
}
}
//== Call handler ==
if (handler)
handler(tsreader, tsstate, (struct Section *)&pat, tsreader->user_data) ;
//== Tidy up ==
list_for_each_safe(item,safe,&pat.pat_array) {
struct PAT_entry *pat_entry = list_entry(item, struct PAT_entry, next);
free(pat_entry) ;
}
}