mirror of https://github.com/FFmpeg/FFmpeg.git
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.
57 lines
2.7 KiB
57 lines
2.7 KiB
/* |
|
* IEC 61937 common header |
|
* Copyright (c) 2009 Bartlomiej Wolowiec |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg 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. |
|
* |
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include <stdint.h> |
|
|
|
#define SYNCWORD1 0xF872 |
|
#define SYNCWORD2 0x4E1F |
|
#define BURST_HEADER_SIZE 0x8 |
|
|
|
enum IEC958DataType { |
|
IEC958_AC3 = 0x01, ///< AC-3 data |
|
IEC958_MPEG1_LAYER1 = 0x04, ///< MPEG-1 layer 1 |
|
IEC958_MPEG1_LAYER23 = 0x05, ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension |
|
IEC958_MPEG2_EXT = 0x06, ///< MPEG-2 data with extension |
|
IEC958_MPEG2_AAC = 0x07, ///< MPEG-2 AAC ADTS |
|
IEC958_MPEG2_LAYER1_LSF = 0x08, ///< MPEG-2, layer-1 low sampling frequency |
|
IEC958_MPEG2_LAYER2_LSF = 0x09, ///< MPEG-2, layer-2 low sampling frequency |
|
IEC958_MPEG2_LAYER3_LSF = 0x0A, ///< MPEG-2, layer-3 low sampling frequency |
|
IEC958_DTS1 = 0x0B, ///< DTS type I (512 samples) |
|
IEC958_DTS2 = 0x0C, ///< DTS type II (1024 samples) |
|
IEC958_DTS3 = 0x0D, ///< DTS type III (2048 samples) |
|
IEC958_ATRAC = 0x0E, ///< Atrac data |
|
IEC958_ATRAC3 = 0x0F, ///< Atrac 3 data |
|
IEC958_ATRACX = 0x10, ///< Atrac 3 plus data |
|
IEC958_DTSHD = 0x11, ///< DTS HD data |
|
IEC958_WMAPRO = 0x12, ///< WMA 9 Professional data |
|
IEC958_MPEG2_AAC_LSF_2048 = 0x13, ///< MPEG-2 AAC ADTS half-rate low sampling frequency |
|
IEC958_MPEG2_AAC_LSF_4096 = 0x13 | 0x20, ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency |
|
IEC958_EAC3 = 0x15, ///< E-AC-3 data |
|
IEC958_TRUEHD = 0x16, ///< TrueHD data |
|
}; |
|
|
|
static const uint16_t spdif_mpeg_pkt_offset[2][3] = { |
|
//LAYER1 LAYER2 LAYER3 |
|
{ 3072, 9216, 4608 }, // MPEG2 LSF |
|
{ 1536, 4608, 4608 }, // MPEG1 |
|
}; |
|
|
|
void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w);
|
|
|