You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
204 lines
6.8 KiB
204 lines
6.8 KiB
/*****************************************************************************
|
|
* desc_6d.h: ETSI EN 300 468 Descriptor 0x6d: Cell frequency link descriptor
|
|
*****************************************************************************
|
|
* Copyright (C) 2011 Unix Solutions Ltd.
|
|
*
|
|
* Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject
|
|
* to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Normative references:
|
|
* - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems)
|
|
*/
|
|
|
|
#ifndef __BITSTREAM_DVB_DESC_6D_H__
|
|
#define __BITSTREAM_DVB_DESC_6D_H__
|
|
|
|
#include <bitstream/common.h>
|
|
#include <bitstream/mpeg/psi/descriptors.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* Descriptor 0x6d: Cell frequency link descriptor
|
|
*****************************************************************************/
|
|
#define DESC6D_HEADER_SIZE DESC_HEADER_SIZE
|
|
#define DESC6D_DATA_SIZE 7
|
|
#define DESC6D_SUBCELL_SIZE 5
|
|
|
|
static inline void desc6d_init(uint8_t *p_desc)
|
|
{
|
|
desc_set_tag(p_desc, 0x6d);
|
|
}
|
|
|
|
static inline uint16_t desc6dn_get_cell_id(const uint8_t *p_desc_n)
|
|
{
|
|
return (p_desc_n[0] << 8) | p_desc_n[1];
|
|
}
|
|
|
|
static inline void desc6dn_set_cell_id(uint8_t *p_desc_n, uint16_t i_cell_id)
|
|
{
|
|
p_desc_n[0] = (i_cell_id >> 8) & 0xff;
|
|
p_desc_n[1] = i_cell_id & 0xff;
|
|
}
|
|
|
|
static inline uint32_t desc6dn_get_frequency(const uint8_t *p_desc_n)
|
|
{
|
|
return (p_desc_n[2] << 24) | (p_desc_n[3] << 16) | (p_desc_n[4] << 8) | p_desc_n[5];
|
|
}
|
|
|
|
static inline void desc6dn_set_frequency(uint8_t *p_desc_n, uint16_t i_frequency)
|
|
{
|
|
p_desc_n[2] = (i_frequency >> 24) & 0xff;
|
|
p_desc_n[3] = (i_frequency >> 16) & 0xff;
|
|
p_desc_n[4] = (i_frequency >> 8) & 0xff;
|
|
p_desc_n[5] = i_frequency & 0xff;
|
|
}
|
|
|
|
static inline uint8_t desc6dn_get_subcell_info_loop_length(const uint8_t *p_desc_n)
|
|
{
|
|
return p_desc_n[6];
|
|
}
|
|
|
|
|
|
static inline void desc6dn_set_subcell_info_loop_length(uint8_t *p_desc_n, uint8_t i_subcell_info_loop_length)
|
|
{
|
|
p_desc_n[6] = i_subcell_info_loop_length;
|
|
}
|
|
|
|
|
|
/* Subcell loop */
|
|
|
|
static inline uint8_t desc6dk_get_cell_id_extension(const uint8_t *p_desc_k)
|
|
{
|
|
return p_desc_k[0];
|
|
}
|
|
|
|
static inline void desc6dk_set_cell_id_extension(uint8_t *p_desc_k, uint8_t i_cell_id_extension)
|
|
{
|
|
p_desc_k[0] = i_cell_id_extension;
|
|
}
|
|
|
|
static inline uint32_t desc6dk_get_transponder_frequency(const uint8_t *p_desc_k)
|
|
{
|
|
return (p_desc_k[1] << 24) | (p_desc_k[2] << 16) | (p_desc_k[3] << 8) | p_desc_k[4];
|
|
}
|
|
|
|
static inline void desc6dk_set_transponder_frequency(uint8_t *p_desc_k, uint32_t i_frequency)
|
|
{
|
|
p_desc_k[1] = (i_frequency >> 24) & 0xff;
|
|
p_desc_k[2] = (i_frequency >> 16) & 0xff;
|
|
p_desc_k[3] = (i_frequency >> 8) & 0xff;
|
|
p_desc_k[4] = i_frequency & 0xff;
|
|
}
|
|
|
|
/* ----- */
|
|
|
|
static inline uint8_t *desc6d_get_cell(uint8_t *p_desc, uint8_t n)
|
|
{
|
|
uint8_t *p_desc_n = p_desc + DESC6D_HEADER_SIZE;
|
|
uint8_t i_desc_size = desc_get_length(p_desc);
|
|
|
|
while (n) {
|
|
uint8_t i_desc6d_data_size = DESC6D_DATA_SIZE + desc6dn_get_subcell_info_loop_length(p_desc_n);
|
|
if (p_desc_n + i_desc6d_data_size - p_desc > i_desc_size)
|
|
return NULL;
|
|
p_desc_n += i_desc6d_data_size;
|
|
n--;
|
|
}
|
|
if (p_desc_n - p_desc > i_desc_size)
|
|
return NULL;
|
|
return p_desc_n;
|
|
}
|
|
|
|
static inline uint8_t *desc6dn_get_subcell(uint8_t *p_desc_n, uint8_t k)
|
|
{
|
|
int ofs = k * DESC6D_SUBCELL_SIZE;
|
|
if (ofs < desc6dn_get_subcell_info_loop_length(p_desc_n))
|
|
return p_desc_n + DESC6D_DATA_SIZE + ofs;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
static inline bool desc6d_validate(const uint8_t *p_desc)
|
|
{
|
|
const uint8_t *p_desc_n = p_desc + DESC6D_HEADER_SIZE;
|
|
int i_desc_size = desc_get_length(p_desc);
|
|
while (i_desc_size > (DESC6D_HEADER_SIZE - DESC_HEADER_SIZE)) {
|
|
uint8_t i_desc6d_data_size = DESC6D_DATA_SIZE + desc6dn_get_subcell_info_loop_length(p_desc_n);
|
|
i_desc_size -= i_desc6d_data_size;
|
|
p_desc_n += i_desc6d_data_size;
|
|
}
|
|
return i_desc_size == (DESC6D_HEADER_SIZE - DESC_HEADER_SIZE);
|
|
}
|
|
|
|
static inline void desc6d_print(uint8_t *p_desc, f_print pf_print,
|
|
void *opaque, print_type_t i_print_type)
|
|
{
|
|
uint8_t n = 0;
|
|
uint8_t *p_desc_n;
|
|
|
|
while ((p_desc_n = desc6d_get_cell(p_desc, n++)) != NULL) {
|
|
uint8_t k = 0;
|
|
uint8_t *p_desc_k;
|
|
switch (i_print_type) {
|
|
case PRINT_XML:
|
|
pf_print(opaque,
|
|
"<CELL_FREQUENCY_LINK_DESC cell_id=\"%u\" frequency=\"%u\">",
|
|
desc6dn_get_cell_id(p_desc_n),
|
|
desc6dn_get_frequency(p_desc_n)
|
|
);
|
|
while ((p_desc_k = desc6dn_get_subcell(p_desc_n, k++)) != NULL) {
|
|
pf_print(opaque,
|
|
"<SUBCELL_FREQUENCY_LINK_INFO cell_id_extension=\"%u\" transponder_frequency=\"%u\"/>",
|
|
desc6dk_get_cell_id_extension(p_desc_k),
|
|
desc6dk_get_transponder_frequency(p_desc_k)
|
|
);
|
|
}
|
|
pf_print(opaque, "</CELL_FREQUENCY_LINK_DESC>");
|
|
break;
|
|
default:
|
|
pf_print(opaque,
|
|
" - desc 6d cell_frequency_link cell_id=%u frequency=%u",
|
|
desc6dn_get_cell_id(p_desc_n),
|
|
desc6dn_get_frequency(p_desc_n)
|
|
);
|
|
while ((p_desc_k = desc6dn_get_subcell(p_desc_n, k++)) != NULL) {
|
|
pf_print(opaque,
|
|
" - subcell_frequency_link cell_id_extension=%u"
|
|
" transponder_frequency=%u",
|
|
desc6dk_get_cell_id_extension(p_desc_k),
|
|
desc6dk_get_transponder_frequency(p_desc_k)
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|