Commit e8b19f73 authored by Georgi Chorbadzhiyski's avatar Georgi Chorbadzhiyski

mpeg/psi: Add support for descriptor 0x03 (Audio stream).

parent 3d089c61
/*****************************************************************************
* desc_03.h: ISO/IEC 13818-1 Descriptor 0x03 (Audio stream 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_03_H__
#define __BITSTREAM_MPEG_DESC_03_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x03: Audio stream descriptor
*****************************************************************************/
#define DESC03_HEADER_SIZE (DESC_HEADER_SIZE + 1)
static inline void desc03_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x03);
desc_set_length(p_desc, DESC03_HEADER_SIZE - DESC_HEADER_SIZE);
p_desc[2] = 0x07;
}
static inline bool desc03_validate(const uint8_t *p_desc)
{
return desc_get_length(p_desc) >= DESC03_HEADER_SIZE - DESC_HEADER_SIZE;
}
static inline bool desc03_get_free_format_flag(const uint8_t *p_desc) {
return (p_desc[2] & 0x80) == 0x80;
}
static inline void desc03_set_free_format_flag(uint8_t *p_desc, bool b_free_format_flag) {
p_desc[2] = (b_free_format_flag ? (p_desc[2] | 0x80) : (p_desc[2] &~ 0x80));
}
static inline bool desc03_get_ID(const uint8_t *p_desc) {
return (p_desc[2] & 0x40) == 0x40;
}
static inline void desc03_set_ID(uint8_t *p_desc, bool b_id) {
p_desc[2] = (b_id ? (p_desc[2] | 0x40) : (p_desc[2] &~ 0x40));
}
static inline const char *desc03_get_ID_txt(const uint8_t ID) {
return ID ? "MPEG Audio" : "Other";
}
static inline uint8_t desc03_get_layer(const uint8_t *p_desc) {
return (p_desc[2] >> 4) & 0x03; /* xx11xxxx */
}
static inline void desc03_set_layer(uint8_t *p_desc, uint8_t i_layer) {
p_desc[2] = (p_desc[2] & 0xcf) | ((i_layer & 0x03) << 4);
}
static inline const char *desc03_get_layer_txt(const uint8_t layer) {
return layer == 0 ? "reserved" :
layer == 1 ? "Layer III" :
layer == 2 ? "Layer II" :
layer == 3 ? "Layer I" : "reserved";
}
static inline bool desc03_get_vbr_flag(const uint8_t *p_desc) {
return (p_desc[2] & 0x08) == 0x08;
}
static inline void desc03_set_vbr_flag(uint8_t *p_desc, bool b_free_format_flag) {
p_desc[2] = (b_free_format_flag ? (p_desc[2] | 0x08) : (p_desc[2] &~ 0x08));
}
static inline void desc03_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,
"<AUDIO_STREAM_DESC free_format_tag=\"%u\" ID=\"%u\" layer=\"%u\""
" ID_txt=\"%s\" layer_txt=\"%s\" vbr_audio_flag=\"%u\"/>",
desc03_get_free_format_flag(p_desc),
desc03_get_ID(p_desc),
desc03_get_layer(p_desc),
desc03_get_ID_txt(desc03_get_ID(p_desc)),
desc03_get_layer_txt(desc03_get_layer(p_desc)),
desc03_get_vbr_flag(p_desc)
);
break;
default:
pf_print(opaque,
" - desc 03 audio_stream free_format_tag=%u ID=%u layer=%u"
" ID_txt=\"%s\" layer_txt=\"%s\" vbr_audio_flag=%u",
desc03_get_free_format_flag(p_desc),
desc03_get_ID(p_desc),
desc03_get_layer(p_desc),
desc03_get_ID_txt(desc03_get_ID(p_desc)),
desc03_get_layer_txt(desc03_get_layer(p_desc)),
desc03_get_vbr_flag(p_desc)
);
}
}
#ifdef __cplusplus
}
#endif
#endif
......@@ -35,6 +35,7 @@
*/
#include <bitstream/mpeg/psi/desc_02.h>
#include <bitstream/mpeg/psi/desc_03.h>
#include <bitstream/mpeg/psi/desc_05.h>
#include <bitstream/mpeg/psi/desc_09.h>
#include <bitstream/mpeg/psi/desc_0a.h>
......
......@@ -101,6 +101,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
break;
CASE_DESC(02)
CASE_DESC(03)
CASE_DESC(05)
CASE_DESC(09)
CASE_DESC(0a)
......
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