Commit 317b4e40 authored by Georgi Chorbadzhiyski's avatar Georgi Chorbadzhiyski

mpeg/psi: Add support for descriptor 0x0c (Multiplex buffer).

parent 54fa9878
/*****************************************************************************
* desc_0c.h: ISO/IEC 13818-1 Descriptor 0x0c (Multiplex buffer utilization)
*****************************************************************************
* 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_0C_H__
#define __BITSTREAM_MPEG_DESC_0C_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x0c: Multiplex buffer utilization descriptor
*****************************************************************************/
#define DESC0C_HEADER_SIZE (DESC_HEADER_SIZE + 4)
static inline void desc0c_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x0c);
desc_set_length(p_desc, DESC0C_HEADER_SIZE - DESC_HEADER_SIZE);
}
static inline bool desc0c_get_bound_valid(const uint8_t *p_desc)
{
return ((p_desc[2] & 0x80) == 0x80);
}
static inline void desc0c_set_bound_valid(uint8_t *p_desc, bool bound_valid)
{
p_desc[2] = bound_valid ? (p_desc[2] | 0x80) : (p_desc[2] &~ 0x80);
}
static inline uint16_t desc0c_get_LTW_offset_lower_bound(const uint8_t *p_desc)
{
return ((p_desc[2] & 0x7f) << 8) | p_desc[3]; // 1xxxxxxx xxxxxxxx
}
static inline void desc0c_set_LTW_offset_lower_bound(uint8_t *p_desc, uint16_t LTW_offset_lower_bound)
{
p_desc[2] = ((LTW_offset_lower_bound >> 8) & 0x7f) | (p_desc[2] & 0x80);
p_desc[3] = LTW_offset_lower_bound & 0xff;
}
static inline uint16_t desc0c_get_LTW_offset_upper_bound(const uint8_t *p_desc)
{
return ((p_desc[4] & 0x7f) << 8) | p_desc[5]; // 1xxxxxxx xxxxxxxx
}
static inline void desc0c_set_LTW_offset_upper_bound(uint8_t *p_desc, uint16_t LTW_offset_upper_bound)
{
p_desc[4] = ((LTW_offset_upper_bound >> 8) & 0x7f) | 0x80;
p_desc[5] = LTW_offset_upper_bound & 0xff;
}
static inline bool desc0c_validate(const uint8_t *p_desc)
{
return desc_get_length(p_desc) >= DESC0C_HEADER_SIZE - DESC_HEADER_SIZE;
}
static inline void desc0c_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, "<MULTIPLEX_BUFFER_UTILIZATION_DESC bound_valid=\"%u\" LTW_offset_lower_bound=\"%u\" LTW_offset_upper_bound=\"%u\"/>",
desc0c_get_bound_valid(p_desc),
desc0c_get_LTW_offset_lower_bound(p_desc),
desc0c_get_LTW_offset_upper_bound(p_desc));
break;
default:
pf_print(opaque, " - desc 0c multiplex_buffer_utilization bound_valid=%u LTW_offset_lower_bound=%u LTW_offset_upper_bound=%u",
desc0c_get_bound_valid(p_desc),
desc0c_get_LTW_offset_lower_bound(p_desc),
desc0c_get_LTW_offset_upper_bound(p_desc));
}
}
#ifdef __cplusplus
}
#endif
#endif
......@@ -44,5 +44,6 @@
#include <bitstream/mpeg/psi/desc_09.h>
#include <bitstream/mpeg/psi/desc_0a.h>
#include <bitstream/mpeg/psi/desc_0b.h>
#include <bitstream/mpeg/psi/desc_0c.h>
#endif
......@@ -110,6 +110,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
CASE_DESC(09)
CASE_DESC(0a)
CASE_DESC(0b)
CASE_DESC(0c)
CASE_DESC_ICONV(40)
CASE_DESC(41)
CASE_DESC(43)
......
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