Commit 1053fe7b authored by Georgi Chorbadzhiyski's avatar Georgi Chorbadzhiyski

mpeg/psi: Add support for descriptor 0x07 (Target Background Grid).

parent ea1c2a2e
/*****************************************************************************
* desc_07.h: ISO/IEC 13818-1 Descriptor 0x07 (Target Background Grid)
*****************************************************************************
* 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_07_H__
#define __BITSTREAM_MPEG_DESC_07_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x07: Target Background Grid descriptor
*****************************************************************************/
#define DESC07_HEADER_SIZE (DESC_HEADER_SIZE + 4)
static inline void desc07_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x07);
desc_set_length(p_desc, DESC07_HEADER_SIZE - DESC_HEADER_SIZE);
}
static inline uint16_t desc07_get_horizontal_size(const uint8_t *p_desc)
{
return ((uint16_t)p_desc[2] << 6) | (p_desc[3] >> 2);
}
static inline void desc07_set_horizontal_size(uint8_t *p_desc, uint16_t i_horizontal_size)
{
p_desc[2] = (i_horizontal_size >> 6) & 0xff;
p_desc[3] = ((i_horizontal_size & 0xff) << 2) | (p_desc[3] & 0x03);
}
static inline uint16_t desc07_get_vertical_size(const uint8_t *p_desc)
{
return ((uint16_t)(p_desc[3] & 0x03) << 12) |
(uint16_t)(p_desc[4] << 4) |
((p_desc[5] & 0xf0) >> 4);
}
static inline void desc07_set_vertical_size(uint8_t *p_desc, uint16_t i_vertical_size)
{
p_desc[3] = (p_desc[3] & 0xfc) | ((i_vertical_size >> 12) & 0x03);
p_desc[4] = (i_vertical_size >> 4) & 0xff;
p_desc[5] = ((i_vertical_size & 0x0f) << 4) | (p_desc[5] & 0x0f);
}
static inline uint8_t desc07_get_aspect_ratio_info(const uint8_t *p_desc)
{
return p_desc[5] & 0x0f;
}
static inline void desc07_set_aspect_ratio_info(uint8_t *p_desc, uint8_t i_aspect_ratio_info)
{
p_desc[5] = (p_desc[5] & 0xf0) | (i_aspect_ratio_info & 0x0f);
}
static inline bool desc07_validate(const uint8_t *p_desc)
{
return desc_get_length(p_desc) >= DESC07_HEADER_SIZE - DESC_HEADER_SIZE;
}
static inline void desc07_print(const uint8_t *p_desc, f_print pf_print,
void *opaque, print_type_t i_print_type)
{
switch (i_print_type) {
case PRINT_XML:
pf_print(opaque, "<TARGET_BACKGROUND_GRID_DESC horizontal_size=\"%u\" vertical_size=\"%u\" aspect_ratio_info=\"%u\"/>",
desc07_get_horizontal_size(p_desc),
desc07_get_vertical_size(p_desc),
desc07_get_aspect_ratio_info(p_desc)
);
break;
default:
pf_print(opaque, " - desc 07 target_background_grid horizontal_size=%u vertical_size=%u aspect_ratio_info=%u",
desc07_get_horizontal_size(p_desc),
desc07_get_vertical_size(p_desc),
desc07_get_aspect_ratio_info(p_desc)
);
}
}
#ifdef __cplusplus
}
#endif
#endif
......@@ -39,6 +39,7 @@
#include <bitstream/mpeg/psi/desc_04.h>
#include <bitstream/mpeg/psi/desc_05.h>
#include <bitstream/mpeg/psi/desc_06.h>
#include <bitstream/mpeg/psi/desc_07.h>
#include <bitstream/mpeg/psi/desc_09.h>
#include <bitstream/mpeg/psi/desc_0a.h>
......
......@@ -105,6 +105,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
CASE_DESC(04)
CASE_DESC(05)
CASE_DESC(06)
CASE_DESC(07)
CASE_DESC(09)
CASE_DESC(0a)
CASE_DESC_ICONV(40)
......
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