yading@11: /*
yading@11:  * IEC 61937 common header
yading@11:  * Copyright (c) 2009 Bartlomiej Wolowiec
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #ifndef AVFORMAT_SPDIF_H
yading@11: #define AVFORMAT_SPDIF_H
yading@11: 
yading@11: #include <stdint.h>
yading@11: #include "avformat.h"
yading@11: 
yading@11: #define SYNCWORD1 0xF872
yading@11: #define SYNCWORD2 0x4E1F
yading@11: #define BURST_HEADER_SIZE 0x8
yading@11: 
yading@11: enum IEC61937DataType {
yading@11:     IEC61937_AC3                = 0x01,          ///< AC-3 data
yading@11:     IEC61937_MPEG1_LAYER1       = 0x04,          ///< MPEG-1 layer 1
yading@11:     IEC61937_MPEG1_LAYER23      = 0x05,          ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension
yading@11:     IEC61937_MPEG2_EXT          = 0x06,          ///< MPEG-2 data with extension
yading@11:     IEC61937_MPEG2_AAC          = 0x07,          ///< MPEG-2 AAC ADTS
yading@11:     IEC61937_MPEG2_LAYER1_LSF   = 0x08,          ///< MPEG-2, layer-1 low sampling frequency
yading@11:     IEC61937_MPEG2_LAYER2_LSF   = 0x09,          ///< MPEG-2, layer-2 low sampling frequency
yading@11:     IEC61937_MPEG2_LAYER3_LSF   = 0x0A,          ///< MPEG-2, layer-3 low sampling frequency
yading@11:     IEC61937_DTS1               = 0x0B,          ///< DTS type I   (512 samples)
yading@11:     IEC61937_DTS2               = 0x0C,          ///< DTS type II  (1024 samples)
yading@11:     IEC61937_DTS3               = 0x0D,          ///< DTS type III (2048 samples)
yading@11:     IEC61937_ATRAC              = 0x0E,          ///< Atrac data
yading@11:     IEC61937_ATRAC3             = 0x0F,          ///< Atrac 3 data
yading@11:     IEC61937_ATRACX             = 0x10,          ///< Atrac 3 plus data
yading@11:     IEC61937_DTSHD              = 0x11,          ///< DTS HD data
yading@11:     IEC61937_WMAPRO             = 0x12,          ///< WMA 9 Professional data
yading@11:     IEC61937_MPEG2_AAC_LSF_2048 = 0x13,          ///< MPEG-2 AAC ADTS half-rate low sampling frequency
yading@11:     IEC61937_MPEG2_AAC_LSF_4096 = 0x13 | 0x20,   ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency
yading@11:     IEC61937_EAC3               = 0x15,          ///< E-AC-3 data
yading@11:     IEC61937_TRUEHD             = 0x16,          ///< TrueHD data
yading@11: };
yading@11: 
yading@11: static const uint16_t spdif_mpeg_pkt_offset[2][3] = {
yading@11:     //LAYER1  LAYER2  LAYER3
yading@11:     { 3072,    9216,   4608 }, // MPEG2 LSF
yading@11:     { 1536,    4608,   4608 }, // MPEG1
yading@11: };
yading@11: 
yading@11: void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w);
yading@11: int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt);
yading@11: int ff_spdif_probe(const uint8_t *p_buf, int buf_size, enum AVCodecID *codec);
yading@11: 
yading@11: #endif /* AVFORMAT_SPDIF_H */