Commit 35c5b605 authored by Georgi Chorbadzhiyski's avatar Georgi Chorbadzhiyski

mpeg/psi: Add support for descriptor 0x04 (Hierarchy descriptor).

parent e8b19f73
/*****************************************************************************
* desc_04.h: ISO/IEC 13818-1 Descriptor 0x04 (Hierarchy 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_04_H__
#define __BITSTREAM_MPEG_DESC_04_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x04: Hierarchy descriptor
*****************************************************************************/
#define DESC04_HEADER_SIZE (DESC_HEADER_SIZE + 4)
static inline void desc04_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x04);
desc_set_length(p_desc, DESC04_HEADER_SIZE - DESC_HEADER_SIZE);
}
static inline uint8_t desc04_get_type(const uint8_t *p_desc)
{
return p_desc[2] & 0x0f;
}
static inline void desc04_set_type(uint8_t *p_desc, uint8_t i_type)
{
p_desc[2] = (i_type & 0x0f) | 0xf0;
}
static inline uint8_t desc04_get_layer_index(const uint8_t *p_desc)
{
return p_desc[3] & 0x3f;
}
static inline void desc04_set_layer_index(uint8_t *p_desc, uint8_t i_layer_index)
{
p_desc[3] = i_layer_index | 0xc0;
}
static inline uint8_t desc04_get_embedded_layer_index(const uint8_t *p_desc)
{
return p_desc[4] & 0x3f;
}
static inline void desc04_set_embedded_layer_index(uint8_t *p_desc, uint8_t i_embedded_layer_index)
{
p_desc[4] = i_embedded_layer_index | 0xc0;
}
static inline uint8_t desc04_get_channel(const uint8_t *p_desc)
{
return p_desc[5] & 0x3f;
}
static inline void desc04_set_channel(uint8_t *p_desc, uint8_t i_channel)
{
p_desc[5] = i_channel | 0xc0;
}
static inline char *desc04_get_type_txt(uint8_t i_type)
{
return i_type == 0 ? "reserved" :
i_type == 1 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 Spatial Scalability" :
i_type == 2 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 SNR Scalability" :
i_type == 3 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 Temporal Scalability" :
i_type == 4 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 Data paritioning" :
i_type == 5 ? "ISO/IEC 13818-3 Extension bitstream" :
i_type == 6 ? "ITU-T Rec.H.222.0 | ISO/IEC 13818-1 PrivateStream" :
i_type >= 7 && i_type <= 14 ? "reserved" :
i_type == 15 ? "base layer" : "unknown";
}
static inline bool desc04_validate(const uint8_t *p_desc)
{
return desc_get_length(p_desc) >= DESC04_HEADER_SIZE - DESC_HEADER_SIZE;
}
static inline void desc04_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, "<HIERARCHY_DESC type=\"%u\" type_txt=\"%s\" layer_index=\"%u\" embedded_layer_index=\"%u\" channel=\"%u\"/>",
desc04_get_type(p_desc),
desc04_get_type_txt(desc04_get_type(p_desc)),
desc04_get_layer_index(p_desc),
desc04_get_embedded_layer_index(p_desc),
desc04_get_channel(p_desc)
);
break;
default:
pf_print(opaque, " - desc 04 hierarchy type=%u type_txt=\"%s\" layer_index=%u embedded_layer_index=%u channel=%u",
desc04_get_type(p_desc),
desc04_get_type_txt(desc04_get_type(p_desc)),
desc04_get_layer_index(p_desc),
desc04_get_embedded_layer_index(p_desc),
desc04_get_channel(p_desc)
);
}
}
#ifdef __cplusplus
}
#endif
#endif
......@@ -36,6 +36,7 @@
#include <bitstream/mpeg/psi/desc_02.h>
#include <bitstream/mpeg/psi/desc_03.h>
#include <bitstream/mpeg/psi/desc_04.h>
#include <bitstream/mpeg/psi/desc_05.h>
#include <bitstream/mpeg/psi/desc_09.h>
#include <bitstream/mpeg/psi/desc_0a.h>
......
......@@ -102,6 +102,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
CASE_DESC(02)
CASE_DESC(03)
CASE_DESC(04)
CASE_DESC(05)
CASE_DESC(09)
CASE_DESC(0a)
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment