/*
* parse_si_pmt.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_pmt.h"
#include "descriptors/parse_desc.h"
/*=============================================================================================*/
// CONSTANTS
/*=============================================================================================*/
/*=============================================================================================*/
// MACROS
/*=============================================================================================*/
/*=============================================================================================*/
// FUNCTIONS
/*=============================================================================================*/
/* ----------------------------------------------------------------------- */
//
// program_map_section() {
// table_id 8 uimsbf
// section_syntax_indicator 1 bslbf
// '0' 1 bslbf
// reserved 2 bslbf
// section_length 12 uimsbf
// program_number 16 uimsbf
// reserved 2 bslbf
// version_number 5 uimsbf
// current_next_indicator 1 bslbf
// section_number 8 uimsbf
// last_section_number 8 uimsbf
// reserved 3 bslbf
// PCR_PID 13 uimsbf
// reserved 4 bslbf
// program_info_length 12 uimsbf
// for (i = 0; i < N; i++) {
// descriptor()
// }
// for (i = 0; i < N1; i++) {
// stream_type 8 uimsbf
// reserved 3 bslbf
// elementary_PID 13 uimsbf
// reserved 4 bslbf
// ES_info_length 12 uimsbf
// for (i = 0; i < N2; i++) {
// descriptor()
// }
// }
// CRC_32 32 rpchof
// }
/* ----------------------------------------------------------------------- */
void print_pmt(struct Section_program_map *pmt)
{
struct list_head *item, *safe;
int end_buff_len ;
printf("Table: program_map [0x%02x]\n", pmt->table_id) ;
printf("Length: %d\n", pmt->section_length) ;
//== data ==
printf("section_syntax_indicator = %d\n", pmt->section_syntax_indicator) ;
printf("program_number = %d\n", pmt->program_number) ;
printf("version_number = %d\n", pmt->version_number) ;
printf("current_next_indicator = %d\n", pmt->current_next_indicator) ;
printf("section_number = %d\n", pmt->section_number) ;
printf("last_section_number = %d\n", pmt->last_section_number) ;
printf("PCR_PID = %d\n", pmt->PCR_PID) ;
printf("program_info_length = %d\n", pmt->program_info_length) ;
// Descriptors list
print_desc_list(&pmt->descriptors_array, 1) ;
list_for_each_safe(item,safe,&pmt->pmt_array) {
struct PMT_entry *pmt_entry = list_entry(item, struct PMT_entry, next);
// PMT entry
printf(" -PMT entry-\n") ;
printf(" stream_type = %d\n", pmt_entry->stream_type) ;
printf(" elementary_PID = %d\n", pmt_entry->elementary_PID) ;
printf(" ES_info_length = %d\n", pmt_entry->ES_info_length) ;
// Descriptors list
print_desc_list(&pmt_entry->descriptors_array, 1) ;
}
}
/* ----------------------------------------------------------------------- */
void parse_pmt(struct TS_reader *tsreader, struct TS_state *tsstate, struct TS_bits *bits,
Section_handler handler, struct Section_decode_flags *flags)
{
struct Section_program_map pmt ;
struct list_head *item, *safe;
unsigned byte ;
int end_buff_len ;
//== Parse data ==
pmt.table_id = bits_get(bits, 8) ;
pmt.section_syntax_indicator = bits_get(bits, 1) ;
bits_skip(bits, 1) ;
bits_skip(bits, 2) ;
pmt.section_length = bits_get(bits, 12) ;
pmt.program_number = bits_get(bits, 16) ;
bits_skip(bits, 2) ;
pmt.version_number = bits_get(bits, 5) ;
pmt.current_next_indicator = bits_get(bits, 1) ;
pmt.section_number = bits_get(bits, 8) ;
pmt.last_section_number = bits_get(bits, 8) ;
bits_skip(bits, 3) ;
pmt.PCR_PID = bits_get(bits, 13) ;
bits_skip(bits, 4) ;
pmt.program_info_length = bits_get(bits, 12) ;
// Descriptors
INIT_LIST_HEAD(&pmt.descriptors_array);
end_buff_len = bits_len_calc(bits, -pmt.program_info_length ) ;
while (bits->buff_len > end_buff_len)
{
enum TS_descriptor_ids desc_tag = parse_desc(&pmt.descriptors_array, bits, flags->decode_descriptor) ;
}
INIT_LIST_HEAD(&pmt.pmt_array) ;
while (bits->buff_len >= 5)
{
struct PMT_entry *pmt_entry = malloc(sizeof(*pmt_entry));
memset(pmt_entry,0,sizeof(*pmt_entry));
list_add_tail(&pmt_entry->next,&pmt.pmt_array);
pmt_entry->stream_type = bits_get(bits, 8) ;
bits_skip(bits, 3) ;
pmt_entry->elementary_PID = bits_get(bits, 13) ;
bits_skip(bits, 4) ;
pmt_entry->ES_info_length = bits_get(bits, 12) ;
// Descriptors
INIT_LIST_HEAD(&pmt_entry->descriptors_array);
end_buff_len = bits_len_calc(bits, -pmt_entry->ES_info_length ) ;
while (bits->buff_len > end_buff_len)
{
enum TS_descriptor_ids desc_tag = parse_desc(&pmt_entry->descriptors_array, bits, flags->decode_descriptor) ;
}
}
//== Call handler ==
if (handler)
handler(tsreader, tsstate, (struct Section *)&pmt, tsreader->user_data) ;
//== Tidy up ==
free_descriptors_list(&pmt.descriptors_array);
list_for_each_safe(item,safe,&pmt.pmt_array) {
struct PMT_entry *pmt_entry = list_entry(item, struct PMT_entry, next);
free_descriptors_list(&pmt_entry->descriptors_array);
free(pmt_entry) ;
}
}