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libavformat
spdif.h
Go to the documentation of this file.
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/*
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* IEC 61937 common header
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* Copyright (c) 2009 Bartlomiej Wolowiec
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_SPDIF_H
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#define AVFORMAT_SPDIF_H
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#include <stdint.h>
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#include "
avformat.h
"
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#define SYNCWORD1 0xF872
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#define SYNCWORD2 0x4E1F
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#define BURST_HEADER_SIZE 0x8
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enum
IEC61937DataType
{
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IEC61937_AC3
= 0x01,
///< AC-3 data
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IEC61937_MPEG1_LAYER1
= 0x04,
///< MPEG-1 layer 1
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IEC61937_MPEG1_LAYER23
= 0x05,
///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension
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IEC61937_MPEG2_EXT
= 0x06,
///< MPEG-2 data with extension
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IEC61937_MPEG2_AAC
= 0x07,
///< MPEG-2 AAC ADTS
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IEC61937_MPEG2_LAYER1_LSF
= 0x08,
///< MPEG-2, layer-1 low sampling frequency
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IEC61937_MPEG2_LAYER2_LSF
= 0x09,
///< MPEG-2, layer-2 low sampling frequency
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IEC61937_MPEG2_LAYER3_LSF
= 0x0A,
///< MPEG-2, layer-3 low sampling frequency
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IEC61937_DTS1
= 0x0B,
///< DTS type I (512 samples)
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IEC61937_DTS2
= 0x0C,
///< DTS type II (1024 samples)
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IEC61937_DTS3
= 0x0D,
///< DTS type III (2048 samples)
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IEC61937_ATRAC
= 0x0E,
///< ATRAC data
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IEC61937_ATRAC3
= 0x0F,
///< ATRAC3 data
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IEC61937_ATRACX
= 0x10,
///< ATRAC3+ data
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IEC61937_DTSHD
= 0x11,
///< DTS HD data
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IEC61937_WMAPRO
= 0x12,
///< WMA 9 Professional data
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IEC61937_MPEG2_AAC_LSF_2048
= 0x13,
///< MPEG-2 AAC ADTS half-rate low sampling frequency
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IEC61937_MPEG2_AAC_LSF_4096
= 0x13 | 0x20,
///< MPEG-2 AAC ADTS quarter-rate low sampling frequency
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IEC61937_EAC3
= 0x15,
///< E-AC-3 data
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IEC61937_TRUEHD
= 0x16,
///< TrueHD data
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};
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static
const
uint16_t
spdif_mpeg_pkt_offset
[2][3] = {
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//LAYER1 LAYER2 LAYER3
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{ 3072, 9216, 4608 },
// MPEG2 LSF
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{ 1536, 4608, 4608 },
// MPEG1
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};
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void
ff_spdif_bswap_buf16
(uint16_t *dst,
const
uint16_t *
src
,
int
w);
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int
ff_spdif_read_packet
(
AVFormatContext
*
s
,
AVPacket
*
pkt
);
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int
ff_spdif_probe
(
const
uint8_t
*p_buf,
int
buf_size,
enum
AVCodecID
*codec);
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#endif
/* AVFORMAT_SPDIF_H */
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