| /* |
| * 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> |
| #include "avformat.h" |
| |
| #define SYNCWORD1 0xF872 |
| #define SYNCWORD2 0x4E1F |
| #define BURST_HEADER_SIZE 0x8 |
| |
| enum IEC61937DataType { |
| IEC61937_AC3 = 0x01, ///< AC-3 data |
| IEC61937_MPEG1_LAYER1 = 0x04, ///< MPEG-1 layer 1 |
| IEC61937_MPEG1_LAYER23 = 0x05, ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension |
| IEC61937_MPEG2_EXT = 0x06, ///< MPEG-2 data with extension |
| IEC61937_MPEG2_AAC = 0x07, ///< MPEG-2 AAC ADTS |
| IEC61937_MPEG2_LAYER1_LSF = 0x08, ///< MPEG-2, layer-1 low sampling frequency |
| IEC61937_MPEG2_LAYER2_LSF = 0x09, ///< MPEG-2, layer-2 low sampling frequency |
| IEC61937_MPEG2_LAYER3_LSF = 0x0A, ///< MPEG-2, layer-3 low sampling frequency |
| IEC61937_DTS1 = 0x0B, ///< DTS type I (512 samples) |
| IEC61937_DTS2 = 0x0C, ///< DTS type II (1024 samples) |
| IEC61937_DTS3 = 0x0D, ///< DTS type III (2048 samples) |
| IEC61937_ATRAC = 0x0E, ///< ATRAC data |
| IEC61937_ATRAC3 = 0x0F, ///< ATRAC3 data |
| IEC61937_ATRACX = 0x10, ///< ATRAC3+ data |
| IEC61937_DTSHD = 0x11, ///< DTS HD data |
| IEC61937_WMAPRO = 0x12, ///< WMA 9 Professional data |
| IEC61937_MPEG2_AAC_LSF_2048 = 0x13, ///< MPEG-2 AAC ADTS half-rate low sampling frequency |
| IEC61937_MPEG2_AAC_LSF_4096 = 0x13 | 0x20, ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency |
| IEC61937_EAC3 = 0x15, ///< E-AC-3 data |
| IEC61937_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); |
| int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt); |
| int ff_spdif_probe(const uint8_t *p_buf, int buf_size, enum AVCodecID *codec); |
| |
| #endif /* AVFORMAT_SPDIF_H */ |