Commit cdbad569 authored by Georgi Chorbadzhiyski's avatar Georgi Chorbadzhiyski

dvb/si: Add support for descriptor 0x6d (Cell frequency link descriptor).

parent d927ea40
......@@ -146,6 +146,7 @@ Supported DVB descriptors
* Descriptor 0x6a: AC-3 descriptor
* Descriptor 0x6b: Ancillary data descriptor
* Descriptor 0x6c: Cell list descriptor
* Descriptor 0x6d: Cell frequency link descriptor
* Descriptor 0x7a: Enhanced AC-3 descriptor
* Descriptor 0x7b: DTS descriptor
* Descriptor 0x7c: AAC descriptor
......
......@@ -5,7 +5,6 @@ so if you like something just do it and send a patch.
- Descriptor 0x29 IPMP_descriptor (defined in ISO/IEC 13818-11, MPEG-2 IPMP)
- Add support (parser, generator, example) for these DVB descriptors:
- Descriptor 0x6d: cell_frequency_link_descriptor
- Descriptor 0x6e: announcement_support_descriptor
- Descriptor 0x6f: application_signalling_descriptor
- Descriptor 0x70: adaptation_field_data_descriptor
......
/*****************************************************************************
* 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
......@@ -79,6 +79,7 @@
#include <bitstream/dvb/si/desc_6a.h>
#include <bitstream/dvb/si/desc_6b.h>
#include <bitstream/dvb/si/desc_6c.h>
#include <bitstream/dvb/si/desc_6d.h>
#include <bitstream/dvb/si/desc_7a.h>
#include <bitstream/dvb/si/desc_7b.h>
#include <bitstream/dvb/si/desc_7c.h>
......
......@@ -1542,7 +1542,63 @@ static void build_desc6c(uint8_t *desc) {
desc_set_length(desc, cell_n - desc - DESC_HEADER_SIZE);
}
/* --- Descriptor 0x6d: cell_frequency_link_descriptor */
/* DVB Descriptor 0x6d: Cell frequency link descriptor */
static void build_desc6d(uint8_t *desc) {
uint8_t n = 0, k;
uint8_t *cell_n, *subcell_k;
desc6d_init(desc);
desc_set_length(desc, 255);
cell_n = desc6d_get_cell(desc, n++);
desc6dn_set_cell_id(cell_n, 1234);
desc6dn_set_frequency(cell_n, 4567);
desc6dn_set_subcell_info_loop_length(cell_n, 0);
cell_n = desc6d_get_cell(desc, n++);
desc6dn_set_cell_id(cell_n, 4456);
desc6dn_set_frequency(cell_n, 5567);
desc6dn_set_subcell_info_loop_length(cell_n, 0);
{
k = 0;
desc6dn_set_subcell_info_loop_length(cell_n, 255);
subcell_k = desc6dn_get_subcell(cell_n, k++);
desc6dk_set_cell_id_extension(subcell_k, 0);
desc6dk_set_transponder_frequency(subcell_k, 1122);
subcell_k = desc6dn_get_subcell(cell_n, k++);
desc6dk_set_cell_id_extension(subcell_k, 1);
desc6dk_set_transponder_frequency(subcell_k, 2233);
subcell_k = desc6dn_get_subcell(cell_n, k++);
desc6dk_set_cell_id_extension(subcell_k, 2);
desc6dk_set_transponder_frequency(subcell_k, 3344);
subcell_k = desc6dn_get_subcell(cell_n, k);
desc6dn_set_subcell_info_loop_length(cell_n, subcell_k - cell_n - DESC6D_DATA_SIZE);
}
cell_n = desc6d_get_cell(desc, n++);
desc6dn_set_cell_id(cell_n, 7890);
desc6dn_set_frequency(cell_n, 56789);
desc6dn_set_subcell_info_loop_length(cell_n, 0);
{
k = 0;
desc6dn_set_subcell_info_loop_length(cell_n, 255);
subcell_k = desc6dn_get_subcell(cell_n, k++);
desc6dk_set_cell_id_extension(subcell_k, 0);
desc6dk_set_transponder_frequency(subcell_k, 889911);
subcell_k = desc6dn_get_subcell(cell_n, k);
desc6dn_set_subcell_info_loop_length(cell_n, subcell_k - cell_n - DESC6D_DATA_SIZE);
}
cell_n = desc6d_get_cell(desc, n);
desc_set_length(desc, cell_n - desc - DESC_HEADER_SIZE);
}
/* --- Descriptor 0x6e: announcement_support_descriptor */
/* --- Descriptor 0x6f: application_signalling_descriptor */
/* --- Descriptor 0x70: adaptation_field_data_descriptor */
......@@ -1857,6 +1913,9 @@ static void generate_nit(void) {
desc = descs_get_desc(desc_loop, desc_counter++);
build_desc6c(desc);
desc = descs_get_desc(desc_loop, desc_counter++);
build_desc6d(desc);
// Finish descriptor generation
desc = descs_get_desc(desc_loop, desc_counter); // Get next descriptor pos
nit_set_desclength(nit, desc - desc_loop - DESCS_HEADER_SIZE);
......
......@@ -47,6 +47,13 @@ new NIT actual networkid=40000 version=1
- cell_list_subcell_info cell_id_extension=2 subcell_latitude=8755 subcell_longtitude=17493 subcell_extend_of_latitude=1656 subcell_extend_of_longtitude=2475
- desc 6c cell_list cell_id=65535 cell_latitude=61166 cell_longtitude=56797 cell_extend_of_latitude=1929 cell_extend_of_longtitude=2748
- cell_list_subcell_info cell_id_extension=0 subcell_latitude=4386 subcell_longtitude=13124 subcell_extend_of_latitude=1383 subcell_extend_of_longtitude=2202
- desc 6d cell_frequency_link cell_id=1234 frequency=4567
- desc 6d cell_frequency_link cell_id=4456 frequency=5567
- subcell_frequency_link cell_id_extension=0 transponder_frequency=1122
- subcell_frequency_link cell_id_extension=1 transponder_frequency=2233
- subcell_frequency_link cell_id_extension=2 transponder_frequency=3344
- desc 6d cell_frequency_link cell_id=7890 frequency=56789
- subcell_frequency_link cell_id_extension=0 transponder_frequency=889911
* ts tsid=10000 onid=40000
- desc 41 service_list sid=20000 type=0x01
- desc 41 service_list sid=20100 type=0x02
......
......@@ -78,6 +78,18 @@
<CELL_LIST_SUBCELL_INFO cell_id_extension="0" subcell_latitude="4386" subcell_longtitude="13124" subcell_extend_of_latitude="1383" subcell_extend_of_longtitude="2202"/>
</CELL_LIST_DESC>
</DESC>
<DESC id="0x6d" length="41" value="04d2000011d7001168000015bf0f000000046201000008b90200000d101ed20000ddd50500000d9437">
<CELL_FREQUENCY_LINK_DESC cell_id="1234" frequency="4567">
</CELL_FREQUENCY_LINK_DESC>
<CELL_FREQUENCY_LINK_DESC cell_id="4456" frequency="5567">
<SUBCELL_FREQUENCY_LINK_INFO cell_id_extension="0" transponder_frequency="1122"/>
<SUBCELL_FREQUENCY_LINK_INFO cell_id_extension="1" transponder_frequency="2233"/>
<SUBCELL_FREQUENCY_LINK_INFO cell_id_extension="2" transponder_frequency="3344"/>
</CELL_FREQUENCY_LINK_DESC>
<CELL_FREQUENCY_LINK_DESC cell_id="7890" frequency="56789">
<SUBCELL_FREQUENCY_LINK_INFO cell_id_extension="0" transponder_frequency="889911"/>
</CELL_FREQUENCY_LINK_DESC>
</DESC>
<TS tsid="10000" onid="40000">
<DESC id="0x41" length="12" value="4e20014e84024ee8014f4c02">
<SERVICE_LIST_DESC sid="20000" type="0x01" />
......
......@@ -178,6 +178,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
CASE_DESC(6a)
CASE_DESC(6b)
CASE_DESC(6c)
CASE_DESC(6d)
CASE_DESC(7a)
CASE_DESC(7b)
CASE_DESC(7c)
......
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