repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * IEC 61937 common header | |
| 3 | * Copyright (c) 2009 Bartlomiej Wolowiec | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg 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 | * FFmpeg 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 FFmpeg; 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 | #include "avformat.h" | |
| 27 | ||
| 28 | #define SYNCWORD1 0xF872 | |
| 29 | #define SYNCWORD2 0x4E1F | |
| 30 | #define BURST_HEADER_SIZE 0x8 | |
| 31 | ||
| 32 | enum IEC61937DataType { | |
| 33 | IEC61937_AC3 = 0x01, ///< AC-3 data | |
| 34 | IEC61937_MPEG1_LAYER1 = 0x04, ///< MPEG-1 layer 1 | |
| 35 | IEC61937_MPEG1_LAYER23 = 0x05, ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension | |
| 36 | IEC61937_MPEG2_EXT = 0x06, ///< MPEG-2 data with extension | |
| 37 | IEC61937_MPEG2_AAC = 0x07, ///< MPEG-2 AAC ADTS | |
| 38 | IEC61937_MPEG2_LAYER1_LSF = 0x08, ///< MPEG-2, layer-1 low sampling frequency | |
| 39 | IEC61937_MPEG2_LAYER2_LSF = 0x09, ///< MPEG-2, layer-2 low sampling frequency | |
| 40 | IEC61937_MPEG2_LAYER3_LSF = 0x0A, ///< MPEG-2, layer-3 low sampling frequency | |
| 41 | IEC61937_DTS1 = 0x0B, ///< DTS type I (512 samples) | |
| 42 | IEC61937_DTS2 = 0x0C, ///< DTS type II (1024 samples) | |
| 43 | IEC61937_DTS3 = 0x0D, ///< DTS type III (2048 samples) | |
| 44 | IEC61937_ATRAC = 0x0E, ///< ATRAC data | |
| 45 | IEC61937_ATRAC3 = 0x0F, ///< ATRAC3 data | |
| 46 | IEC61937_ATRACX = 0x10, ///< ATRAC3+ data | |
| 47 | IEC61937_DTSHD = 0x11, ///< DTS HD data | |
| 48 | IEC61937_WMAPRO = 0x12, ///< WMA 9 Professional data | |
| 49 | IEC61937_MPEG2_AAC_LSF_2048 = 0x13, ///< MPEG-2 AAC ADTS half-rate low sampling frequency | |
| 50 | IEC61937_MPEG2_AAC_LSF_4096 = 0x13 | 0x20, ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency | |
| 51 | IEC61937_EAC3 = 0x15, ///< E-AC-3 data | |
| 52 | IEC61937_TRUEHD = 0x16, ///< TrueHD data | |
| 53 | }; | |
| 54 | ||
| 55 | static const uint16_t spdif_mpeg_pkt_offset[2][3] = { | |
| 56 | //LAYER1 LAYER2 LAYER3 | |
| 57 | { 3072, 9216, 4608 }, // MPEG2 LSF | |
| 58 | { 1536, 4608, 4608 }, // MPEG1 | |
| 59 | }; | |
| 60 | ||
| 61 | void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w); | |
| 62 | int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt); | |
| 63 | int ff_spdif_probe(const uint8_t *p_buf, int buf_size, enum AVCodecID *codec); | |
| 64 | ||
| 65 | #endif /* AVFORMAT_SPDIF_H */ |