You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
2.2 KiB
62 lines
2.2 KiB
/*****************************************************************************
|
|
* dts_header.c: parse DTS audio headers info
|
|
*****************************************************************************
|
|
* Copyright (C) 2004-2016 VLC authors and VideoLAN
|
|
*
|
|
* Authors: Gildas Bazin <gbazin@netcourrier.com>
|
|
* Laurent Aimar
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 2.1 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
|
|
*****************************************************************************/
|
|
|
|
#define VLC_DTS_HEADER_SIZE 14
|
|
|
|
#define PROFILE_DTS_INVALID -1
|
|
#define PROFILE_DTS 0
|
|
#define PROFILE_DTS_HD 1
|
|
#define PROFILE_DTS_EXPRESS 2
|
|
|
|
enum vlc_dts_syncword_e
|
|
{
|
|
DTS_SYNC_NONE = 0,
|
|
DTS_SYNC_CORE_BE,
|
|
DTS_SYNC_CORE_LE,
|
|
DTS_SYNC_CORE_14BITS_BE,
|
|
DTS_SYNC_CORE_14BITS_LE,
|
|
DTS_SYNC_SUBSTREAM,
|
|
/* Substreams internal syncs */
|
|
DTS_SYNC_SUBSTREAM_LBR,
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
enum vlc_dts_syncword_e syncword;
|
|
unsigned int i_rate;
|
|
unsigned int i_bitrate;
|
|
unsigned int i_frame_size;
|
|
unsigned int i_frame_length;
|
|
uint32_t i_substream_header_size;
|
|
uint16_t i_physical_channels;
|
|
uint16_t i_chan_mode;
|
|
} vlc_dts_header_t;
|
|
|
|
int vlc_dts_header_Parse( vlc_dts_header_t *p_header,
|
|
const void *p_buffer, size_t i_buffer);
|
|
|
|
bool vlc_dts_header_IsSync( const void *p_buffer, size_t i_buffer );
|
|
|
|
ssize_t vlc_dts_header_Convert14b16b( void *p_dst, size_t i_dst,
|
|
const void *p_src, size_t i_src,
|
|
bool b_out_le );
|
|
|