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desc_0a.h
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desc_0a.h
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/*****************************************************************************
* desc_0a.h: ISO/IEC 13818-1 Descriptor 0x0A (ISO-639 language descriptor)
*****************************************************************************
* Copyright (C) 2009-2010 VideoLAN
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* 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_0A_H__
#define __BITSTREAM_MPEG_DESC_0A_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x0a: ISO-639 language descriptor
*****************************************************************************/
#define DESC0A_HEADER_SIZE DESC_HEADER_SIZE
#define DESC0A_LANGUAGE_SIZE 4
#define DESC0A_TYPE_UNDEFINED 0x0
#define DESC0A_TYPE_CLEAN 0x1
#define DESC0A_TYPE_HEARING_IMP 0x2
#define DESC0A_TYPE_VISUAL_IMP 0x3
static inline void desc0a_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x0a);
}
static inline uint8_t *desc0a_get_language(uint8_t *p_desc, uint8_t n)
{
uint8_t *p_desc_n = p_desc + DESC0A_HEADER_SIZE + n * DESC0A_LANGUAGE_SIZE;
if (p_desc_n + DESC0A_LANGUAGE_SIZE - p_desc
> desc_get_length(p_desc) + DESC0A_HEADER_SIZE)
return NULL;
return p_desc_n;
}
static inline void desc0an_set_code(uint8_t *p_desc_n, const uint8_t p_code[3])
{
p_desc_n[0] = p_code[0];
p_desc_n[1] = p_code[1];
p_desc_n[2] = p_code[2];
}
static inline const uint8_t *desc0an_get_code(const uint8_t *p_desc_n)
{
return p_desc_n;
}
static inline void desc0an_set_audiotype(uint8_t *p_desc_n, uint8_t i_type)
{
p_desc_n[3] = i_type;
}
static inline uint8_t desc0an_get_audiotype(const uint8_t *p_desc_n)
{
return p_desc_n[3];
}
static inline const char *desc0a_get_audiotype_txt(uint8_t audio_type)
{
return audio_type == 0x00 ? "undefined" :
audio_type == 0x01 ? "clean effects" :
audio_type == 0x02 ? "hearing impaired" :
audio_type == 0x03 ? "visual impaired commentary" : "reserved";
}
static inline bool desc0a_validate(const uint8_t *p_desc)
{
return !(desc_get_length(p_desc) % DESC0A_LANGUAGE_SIZE);
}
static inline void desc0a_print(uint8_t *p_desc, f_print pf_print,
void *opaque, print_type_t i_print_type)
{
uint8_t j = 0;
uint8_t *p_desc_n;
while ((p_desc_n = desc0a_get_language(p_desc, j)) != NULL) {
j++;
switch (i_print_type) {
case PRINT_XML:
pf_print(opaque, "<AUDIO_LANGUAGE_DESC language=\"%3.3s\" audiotype=\"%u\" audiotype_txt=\"%s\"/>",
(const char *)desc0an_get_code(p_desc_n),
desc0an_get_audiotype(p_desc_n),
desc0a_get_audiotype_txt(desc0an_get_audiotype(p_desc_n))
);
break;
default:
pf_print(opaque, " - desc 0a audio_language language=%3.3s audiotype=%u audiotype_txt=\"%s\"",
(const char *)desc0an_get_code(p_desc_n),
desc0an_get_audiotype(p_desc_n),
desc0a_get_audiotype_txt(desc0an_get_audiotype(p_desc_n))
);
}
}
}
#ifdef __cplusplus
}
#endif
#endif