1/* 2 * IEC 61937 common header 3 * Copyright (c) 2009 Bartlomiej Wolowiec 4 * 5 * This file is part of Libav. 6 * 7 * Libav is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * Libav is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with Libav; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#ifndef AVFORMAT_SPDIF_H 23#define AVFORMAT_SPDIF_H 24 25#include <stdint.h> 26 27#define SYNCWORD1 0xF872 28#define SYNCWORD2 0x4E1F 29#define BURST_HEADER_SIZE 0x8 30 31enum IEC61937DataType { 32 IEC61937_AC3 = 0x01, ///< AC-3 data 33 IEC61937_MPEG1_LAYER1 = 0x04, ///< MPEG-1 layer 1 34 IEC61937_MPEG1_LAYER23 = 0x05, ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension 35 IEC61937_MPEG2_EXT = 0x06, ///< MPEG-2 data with extension 36 IEC61937_MPEG2_AAC = 0x07, ///< MPEG-2 AAC ADTS 37 IEC61937_MPEG2_LAYER1_LSF = 0x08, ///< MPEG-2, layer-1 low sampling frequency 38 IEC61937_MPEG2_LAYER2_LSF = 0x09, ///< MPEG-2, layer-2 low sampling frequency 39 IEC61937_MPEG2_LAYER3_LSF = 0x0A, ///< MPEG-2, layer-3 low sampling frequency 40 IEC61937_DTS1 = 0x0B, ///< DTS type I (512 samples) 41 IEC61937_DTS2 = 0x0C, ///< DTS type II (1024 samples) 42 IEC61937_DTS3 = 0x0D, ///< DTS type III (2048 samples) 43 IEC61937_ATRAC = 0x0E, ///< Atrac data 44 IEC61937_ATRAC3 = 0x0F, ///< Atrac 3 data 45 IEC61937_ATRACX = 0x10, ///< Atrac 3 plus data 46 IEC61937_DTSHD = 0x11, ///< DTS HD data 47 IEC61937_WMAPRO = 0x12, ///< WMA 9 Professional data 48 IEC61937_MPEG2_AAC_LSF_2048 = 0x13, ///< MPEG-2 AAC ADTS half-rate low sampling frequency 49 IEC61937_MPEG2_AAC_LSF_4096 = 0x13 | 0x20, ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency 50 IEC61937_EAC3 = 0x15, ///< E-AC-3 data 51 IEC61937_TRUEHD = 0x16, ///< TrueHD data 52}; 53 54static const uint16_t spdif_mpeg_pkt_offset[2][3] = { 55 //LAYER1 LAYER2 LAYER3 56 { 3072, 9216, 4608 }, // MPEG2 LSF 57 { 1536, 4608, 4608 }, // MPEG1 58}; 59 60void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w); 61 62#endif /* AVFORMAT_SPDIF_H */ 63