libavformat/spdif.h

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/*
 * 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
 */

#ifndef AVFORMAT_SPDIF_H
#define AVFORMAT_SPDIF_H

#include <stdint.h>

#define SYNCWORD1 0xF872
#define SYNCWORD2 0x4E1F
#define BURST_HEADER_SIZE 0x8

enum IEC61937DataType {
    IEC61937_AC3                = 0x01,          
    IEC61937_MPEG1_LAYER1       = 0x04,          
    IEC61937_MPEG1_LAYER23      = 0x05,          
    IEC61937_MPEG2_EXT          = 0x06,          
    IEC61937_MPEG2_AAC          = 0x07,          
    IEC61937_MPEG2_LAYER1_LSF   = 0x08,          
    IEC61937_MPEG2_LAYER2_LSF   = 0x09,          
    IEC61937_MPEG2_LAYER3_LSF   = 0x0A,          
    IEC61937_DTS1               = 0x0B,          
    IEC61937_DTS2               = 0x0C,          
    IEC61937_DTS3               = 0x0D,          
    IEC61937_ATRAC              = 0x0E,          
    IEC61937_ATRAC3             = 0x0F,          
    IEC61937_ATRACX             = 0x10,          
    IEC61937_DTSHD              = 0x11,          
    IEC61937_WMAPRO             = 0x12,          
    IEC61937_MPEG2_AAC_LSF_2048 = 0x13,          
    IEC61937_MPEG2_AAC_LSF_4096 = 0x13 | 0x20,   
    IEC61937_EAC3               = 0x15,          
    IEC61937_TRUEHD             = 0x16,          
};

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);

#endif /* AVFORMAT_SPDIF_H */

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