FFmpeg
spdif.h
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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 
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 }, // MPEG-2 LSF
58  { 1536, 4608, 4608 }, // MPEG-1
59 };
60 
61 void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w);
63 int ff_spdif_probe(const uint8_t *p_buf, int buf_size, enum AVCodecID *codec);
64 
65 #endif /* AVFORMAT_SPDIF_H */
MPEG-2 AAC ADTS half-rate low sampling frequency.
Definition: spdif.h:49
int ff_spdif_probe(const uint8_t *p_buf, int buf_size, enum AVCodecID *codec)
Definition: spdifdec.c:116
MPEG-2, layer-1 low sampling frequency.
Definition: spdif.h:38
IEC61937DataType
Definition: spdif.h:32
static AVPacket pkt
#define src
Definition: vp8dsp.c:254
Format I/O context.
Definition: avformat.h:1358
MPEG-2 AAC ADTS.
Definition: spdif.h:37
uint8_t
DTS type II (1024 samples)
Definition: spdif.h:42
TrueHD data.
Definition: spdif.h:52
DTS HD data.
Definition: spdif.h:47
int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: spdifdec.c:173
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:215
DTS type III (2048 samples)
Definition: spdif.h:43
MPEG-1 layer 2 or 3 data or MPEG-2 without extension.
Definition: spdif.h:35
MPEG-2, layer-3 low sampling frequency.
Definition: spdif.h:40
WMA 9 Professional data.
Definition: spdif.h:48
MPEG-1 layer 1.
Definition: spdif.h:34
uint8_t w
Definition: llviddspenc.c:38
#define s(width, name)
Definition: cbs_vp9.c:257
ATRAC data.
Definition: spdif.h:44
DTS type I (512 samples)
Definition: spdif.h:41
ATRAC3 data.
Definition: spdif.h:45
MPEG-2, layer-2 low sampling frequency.
Definition: spdif.h:39
E-AC-3 data.
Definition: spdif.h:51
Main libavformat public API header.
MPEG-2 data with extension.
Definition: spdif.h:36
MPEG-2 AAC ADTS quarter-rate low sampling frequency.
Definition: spdif.h:50
static const uint16_t spdif_mpeg_pkt_offset[2][3]
Definition: spdif.h:55
ATRAC3+ data.
Definition: spdif.h:46
AC-3 data.
Definition: spdif.h:33
void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w)
Definition: spdif.c:26
This structure stores compressed data.
Definition: avcodec.h:1457