/*
* parse_desc_frequency_list.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_frequency_list.h"
#include "descriptors/parse_desc.h"
/*=============================================================================================*/
// CONSTANTS
/*=============================================================================================*/
/*=============================================================================================*/
// MACROS
/*=============================================================================================*/
/*=============================================================================================*/
// FUNCTIONS
/*=============================================================================================*/
/* ----------------------------------------------------------------------- */
//
// frequency_list_descriptor(){
// descriptor_tag 8 uimsbf
// descriptor_length 8 uimsbf
// reserved_future_use 6 bslbf
// coding_type 2 bslbf
// for (i=0;I<N;i++){
// centre_frequency 32 uimsbf
// }
// }
/* ----------------------------------------------------------------------- */
void print_frequency_list(struct Descriptor_frequency_list *fld, int level)
{
struct list_head *item, *safe;
printf(" Descriptor: frequency_list [0x%02x]\n", fld->descriptor_tag) ;
printf(" Length: %d\n", fld->descriptor_length) ;
printf(" coding_type = %d\n", fld->coding_type) ;
bits_dump("centre_frequency", fld->centre_frequency, fld->descriptor_length, 2) ;
}
/* ----------------------------------------------------------------------- */
struct Descriptor *parse_frequency_list(struct TS_bits *bits, unsigned tag, unsigned len)
{
struct Descriptor_frequency_list *fld ;
unsigned byte ;
int end_buff_len ;
fld = (struct Descriptor_frequency_list *)malloc( sizeof(*fld) ) ;
memset(fld,0,sizeof(*fld));
//== Parse data ==
INIT_LIST_HEAD(&fld->next);
fld->descriptor_tag = tag ; // already extracted by parse_desc()
fld->descriptor_length = len ; // already extracted by parse_desc()
bits_skip(bits, 6) ;
fld->coding_type = bits_get(bits, 2) ;
end_buff_len = bits_len_calc(bits, -(fld->descriptor_length - 1)) ;
fld->centre_frequency[0] = 0 ;
for (byte=0; (bits->buff_len > end_buff_len) && (byte < MAX_CENTRE_FREQUENCY_LEN); ++byte)
{
fld->centre_frequency[byte] = bits_get(bits, 8) ;
fld->centre_frequency[byte+1] = 0 ;
}
return (struct Descriptor *)fld ;
}
/* ----------------------------------------------------------------------- */
void free_frequency_list(struct Descriptor_frequency_list *fld)
{
struct list_head *item, *safe;
free(fld) ;
}