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bitstream/mpeg/psi/desc_26.h

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/*****************************************************************************
* desc_26.h: ISO/IEC 13818-1 Descriptor 0x26 (Metadata 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:
* - ISO/IEC 13818-1:2007(E) (MPEG-2 Systems)
*/
#ifndef __BITSTREAM_MPEG_DESC_26_H__
#define __BITSTREAM_MPEG_DESC_26_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#include <bitstream/mpeg/psi/desc_25.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x26 (Metadata descriptor)
*****************************************************************************/
#define DESC26_HEADER_SIZE (DESC_HEADER_SIZE + 5)
static inline void desc26_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x26);
}
#define desc26_get_metadata_application_format desc25_get_metadata_application_format
#define desc26_set_metadata_application_format desc25_set_metadata_application_format
#define desc26_get_metadata_application_format_identifier desc25_get_metadata_application_format_identifier
#define desc26_set_metadata_application_format_identifier desc25_set_metadata_application_format_identifier
#define __ofs1 \
(4 + (desc26_get_metadata_application_format(p_desc) == 0xffff ? 4 : 0))
#define desc26_get_metadata_format desc25_get_metadata_format
#define desc26_set_metadata_format desc25_set_metadata_format
#define desc26_get_metadata_format_identifier desc25_get_metadata_format_identifier
#define desc26_set_metadata_format_identifier desc25_set_metadata_format_identifier
#define __ofs2 \
(__ofs1 + 1 + (desc26_get_metadata_format(p_desc) == 0xff ? 4 : 0))
#define desc26_get_metadata_service_id desc25_get_metadata_service_id
#define desc26_set_metadata_service_id desc25_set_metadata_service_id
static inline uint8_t desc26_get_decoder_config_flags(const uint8_t *p_desc)
{
return (p_desc[__ofs2 + 1] & 0xe0) >> 5;
}
static inline void desc26_set_decoder_config_flags(uint8_t *p_desc, uint8_t i_flags)
{
uint8_t ofs = __ofs2;
p_desc[ofs + 1] = ((i_flags & 0x07) << 5) | (p_desc[ofs + 1] & 0x1f) | 0x0f;
}
static inline bool desc26_get_dsm_cc_flag(const uint8_t *p_desc)
{
return (p_desc[__ofs2 + 1] & 0x10) == 0x10;
}
static inline void desc26_set_dsm_cc_flag(uint8_t *p_desc, bool b_flag)
{
uint8_t ofs = __ofs2;
p_desc[ofs + 1] = (b_flag ? (p_desc[ofs + 1] | 0x10) : (p_desc[ofs + 1] &~ 0x10)) | 0x0f;
}
static inline uint8_t desc26_get_service_identification_record_length(const uint8_t *p_desc)
{
return desc26_get_dsm_cc_flag(p_desc) ? p_desc[__ofs2 + 2] : 0;
}
static inline const uint8_t *desc26_get_service_identification_record_data(const uint8_t *p_desc)
{
return desc26_get_dsm_cc_flag(p_desc) ? p_desc + __ofs2 + 3 : NULL;
}
static inline const uint8_t *desc26_get_service_identification_record(const uint8_t *p_desc, uint8_t *i_length)
{
*i_length = desc26_get_service_identification_record_length(p_desc);
return desc26_get_service_identification_record_data(p_desc);
}
static inline void desc26_set_service_identification_record(uint8_t *p_desc, uint8_t i_length, uint8_t *p_data)
{
if (desc26_get_dsm_cc_flag(p_desc)) {
uint8_t ofs = __ofs2;
p_desc[ofs + 2] = i_length;
memcpy(p_desc + ofs + 3, p_data, i_length);
}
}
#define __ofs3 \
(__ofs2 + 1 + \
(desc26_get_dsm_cc_flag(p_desc) \
? 1 + desc26_get_service_identification_record_length(p_desc) \
: 0 \
) + 1 \
)
static inline uint8_t desc26_get_decoder_config_length(const uint8_t *p_desc)
{
return (desc26_get_decoder_config_flags(p_desc) == 1) ? p_desc[__ofs3] : 0;
}
static inline const uint8_t *desc26_get_decoder_config_data(const uint8_t *p_desc)
{
return (desc26_get_decoder_config_flags(p_desc) == 1) ? p_desc + __ofs3 + 1 : NULL;
}
static inline const uint8_t *desc26_get_decoder_config(const uint8_t *p_desc, uint8_t *i_length)
{
*i_length = desc26_get_decoder_config_length(p_desc);
return desc26_get_decoder_config_data(p_desc);
}
static inline void desc26_set_decoder_config(uint8_t *p_desc, uint8_t i_length, uint8_t *p_data)
{
if (desc26_get_decoder_config_flags(p_desc) == 1) {
uint8_t ofs = __ofs3;
p_desc[ofs] = i_length;
memcpy(p_desc + ofs + 1, p_data, i_length);
}
}
static inline uint8_t desc26_get_dec_config_identification_record_length(const uint8_t *p_desc)
{
return (desc26_get_decoder_config_flags(p_desc) == 3) ? p_desc[__ofs3] : 0;
}
static inline const uint8_t *desc26_get_dec_config_identification_record_data(const uint8_t *p_desc)
{
return (desc26_get_decoder_config_flags(p_desc) == 3) ? p_desc + __ofs3 + 1 : NULL;
}
static inline const uint8_t *desc26_get_dec_config_identification_record(const uint8_t *p_desc, uint8_t *i_length)
{
*i_length = desc26_get_dec_config_identification_record_length(p_desc);
return desc26_get_dec_config_identification_record_data(p_desc);
}
static inline void desc26_set_dec_config_identification_record(uint8_t *p_desc, uint8_t i_length, uint8_t *p_data)
{
if (desc26_get_decoder_config_flags(p_desc) == 3) {
uint8_t ofs = __ofs3;
p_desc[ofs] = i_length;
memcpy(p_desc + ofs + 1, p_data, i_length);
}
}
static inline uint8_t desc26_get_decoder_config_metadata_service_id(const uint8_t *p_desc)
{
if (desc26_get_decoder_config_flags(p_desc) == 4)
return p_desc[__ofs3];
else
return 0;
}
static inline void desc26_set_decoder_config_metadata_service_id(uint8_t *p_desc, uint8_t i_service)
{
if (desc26_get_decoder_config_flags(p_desc) == 4)
p_desc[__ofs3] = i_service;
}
#undef __ofs1
#undef __ofs2
#undef __ofs3
static inline int desc26_calc_length(const uint8_t *p_desc)
{
int i_length = DESC26_HEADER_SIZE - DESC_HEADER_SIZE;
uint8_t i_flags = desc26_get_decoder_config_flags(p_desc);
if (desc26_get_metadata_application_format(p_desc) == 0xffff)
i_length += 4;
if (desc26_get_metadata_format(p_desc) == 0xff)
i_length += 4;
if (desc26_get_dsm_cc_flag(p_desc))
i_length += 1 + desc26_get_service_identification_record_length(p_desc);
if (i_flags == 1)
i_length += 1 + desc26_get_decoder_config_length(p_desc);
if (i_flags == 3)
i_length += 1 + desc26_get_dec_config_identification_record_length(p_desc);
if (i_flags == 4)
i_length += 1;
return i_length;
}
static inline bool desc26_validate(const uint8_t *p_desc)
{
return desc26_calc_length(p_desc) <= desc_get_length(p_desc);
}
static inline void desc26_set_length(uint8_t *p_desc)
{
desc_set_length(p_desc, desc26_calc_length(p_desc));
}
static inline void desc26_print(const uint8_t *p_desc, f_print pf_print,
void *opaque, print_type_t i_print_type)
{
uint8_t i, i_service_identification_record_length;
const uint8_t *p_service_identification_record = desc26_get_service_identification_record(p_desc, &i_service_identification_record_length);
char psz_service_identification_record[2 * 256 + 1];
const char *extra_str = "decoder_config";
const uint8_t *p_extra = NULL;
uint8_t i_extra_length = 0;
char psz_extra[2 * 256 + 1];
for (i = 0; i < i_service_identification_record_length; i++)
sprintf(psz_service_identification_record + 2 * i, "%02x", p_service_identification_record[i]);
psz_service_identification_record[2 * i] = '\0';
if (desc26_get_decoder_config_flags(p_desc) == 1) {
p_extra = desc26_get_decoder_config(p_desc, &i_extra_length);
}
if (desc26_get_decoder_config_flags(p_desc) == 3) {
extra_str = "dec_config_identification_record";
p_extra = desc26_get_dec_config_identification_record(p_desc, &i_extra_length);
}
for (i = 0; i < i_extra_length; i++)
sprintf(psz_extra + 2 * i, "%02x", p_extra[i]);
psz_extra[2 * i] = '\0';
switch (i_print_type) {
case PRINT_XML:
pf_print(opaque,
"<METADATA_DESC metadata_application_format=\"0x%04x\""
" metadata_application_format_identifier=\"0x%08x\""
" metadata_format=\"0x%02x\""
" metadata_format_identifier=\"0x%08x\""
" metadata_service_id=\"0x%02x\""
" dsm_cc_flag=\"%u\""
" service_identification_record_length=\"%u\""
" service_identification_record=\"%s\""
" decoder_config_flags=\"%u\""
" %s_length=\"%u\""
" %s_data=\"%s\""
" decoder_config_metadata_service_id=\"%u\"/>",
desc26_get_metadata_application_format(p_desc),
desc26_get_metadata_application_format_identifier(p_desc),
desc26_get_metadata_format(p_desc),
desc26_get_metadata_format_identifier(p_desc),
desc26_get_metadata_service_id(p_desc),
desc26_get_dsm_cc_flag(p_desc),
desc26_get_service_identification_record_length(p_desc),
psz_service_identification_record,
desc26_get_decoder_config_flags(p_desc),
extra_str, i_extra_length,
extra_str, psz_extra,
desc26_get_decoder_config_metadata_service_id(p_desc)
);
break;
default:
pf_print(opaque,
" - desc 26 metadata metadata_application_format=0x%04x"
" metadata_application_format_identifier=0x%08x"
" metadata_format=0x%02x"
" metadata_format_identifier=0x%08x"
" metadata_service_id=0x%02x"
" dsm_cc_flag=%u"
" service_identification_record_length=%u"
" service_identification_record=\"%s\""
" decoder_config_flags=%u"
" %s_length=%u"
" %s_data=\"%s\""
" decoder_config_metadata_service_id=%u",
desc26_get_metadata_application_format(p_desc),
desc26_get_metadata_application_format_identifier(p_desc),
desc26_get_metadata_format(p_desc),
desc26_get_metadata_format_identifier(p_desc),
desc26_get_metadata_service_id(p_desc),
desc26_get_dsm_cc_flag(p_desc),
desc26_get_service_identification_record_length(p_desc),
psz_service_identification_record,
desc26_get_decoder_config_flags(p_desc),
extra_str, i_extra_length,
extra_str, psz_extra,
desc26_get_decoder_config_metadata_service_id(p_desc)
);
}
}
#ifdef __cplusplus
}
#endif
#endif