Commit 1d7ba524 authored by Georgi Chorbadzhiyski's avatar Georgi Chorbadzhiyski

mpeg/psi: Add support for descriptor 0x0d (Copyright descriptor).

parent 317b4e40
/*****************************************************************************
* desc_0d.h: ISO/IEC 13818-1 Descriptor 0x0d (Copyright 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_0D_H__
#define __BITSTREAM_MPEG_DESC_0D_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x0d: Copyright descriptor
*****************************************************************************/
#define DESC0D_HEADER_SIZE (DESC_HEADER_SIZE + 4)
static inline void desc0d_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x0d);
desc_set_length(p_desc, DESC0D_HEADER_SIZE - DESC_HEADER_SIZE);
}
static inline uint32_t desc0d_get_copyright_identifier(const uint8_t *p_desc)
{
return (p_desc[2] << 24) | (p_desc[3] << 16) | (p_desc[4] << 8) | p_desc[5];
}
static inline void desc0d_set_copyright_identifier(uint8_t *p_desc, uint32_t i_copyright_identifier)
{
p_desc[2] = (i_copyright_identifier >> 24) & 0xff;
p_desc[3] = (i_copyright_identifier >> 16) & 0xff;
p_desc[4] = (i_copyright_identifier >> 8) & 0xff;
p_desc[5] = i_copyright_identifier & 0xff;
}
static inline const uint8_t *desc0d_get_additional_copyright_info(const uint8_t *p_desc, uint8_t *i_length)
{
*i_length = desc_get_length(p_desc) - (DESC0D_HEADER_SIZE - DESC_HEADER_SIZE);
if (*i_length)
return &p_desc[DESC0D_HEADER_SIZE];
return NULL;
}
static inline void desc0d_set_additional_copyright_info(uint8_t *p_desc, uint8_t *p_additional_copyright_info, uint8_t i_length)
{
if (i_length == 0 || !p_additional_copyright_info)
desc_set_length(p_desc, DESC0D_HEADER_SIZE - DESC_HEADER_SIZE);
else if (i_length < 252)
{
desc_set_length(p_desc, (DESC0D_HEADER_SIZE - DESC_HEADER_SIZE) + i_length);
memcpy(p_desc + DESC0D_HEADER_SIZE, p_additional_copyright_info, i_length);
}
}
static inline bool desc0d_validate(const uint8_t *p_desc)
{
return desc_get_length(p_desc) >= DESC0D_HEADER_SIZE - DESC_HEADER_SIZE;
}
static inline void desc0d_print(const uint8_t *p_desc, f_print pf_print,
void *opaque, print_type_t i_print_type)
{
uint8_t i, i_length;
const uint8_t *p_add_copy_info = desc0d_get_additional_copyright_info(p_desc, &i_length);
char psz_value[2 * 255 + 1];
for (i = 0; i < i_length; i++)
sprintf(psz_value + 2 * i, "%2.2hhx", p_add_copy_info[i]);
psz_value[2 * i] = '\0';
switch (i_print_type) {
case PRINT_XML:
pf_print(opaque, "<COPYRIGHT_DESC identifier=\"0x%08x\" additional_info_len=\"%u\" additional_info=\"%s\"/>",
desc0d_get_copyright_identifier(p_desc),
i_length, psz_value);
break;
default:
pf_print(opaque, " - desc 0d copyright identifier=0x%08x additional_info_len=%u additional_info=%s",
desc0d_get_copyright_identifier(p_desc),
i_length, psz_value);
}
}
#ifdef __cplusplus
}
#endif
#endif
......@@ -45,5 +45,6 @@
#include <bitstream/mpeg/psi/desc_0a.h>
#include <bitstream/mpeg/psi/desc_0b.h>
#include <bitstream/mpeg/psi/desc_0c.h>
#include <bitstream/mpeg/psi/desc_0d.h>
#endif
......@@ -111,6 +111,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
CASE_DESC(0a)
CASE_DESC(0b)
CASE_DESC(0c)
CASE_DESC(0d)
CASE_DESC_ICONV(40)
CASE_DESC(41)
CASE_DESC(43)
......
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