Etisnoop
From Opendigitalradio
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Revision as of 16:09, 14 February 2015
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ETISnoop
ETISnoop is a small too developed by CSP.it and Opendigitalradio that can decode some FIC information from a ETI file, extract the AAC data from a subchannel and decode it to a wav file. It is on github: https://github.com/Opendigitalradio/etisnoop
Compilation
There is only a very simple makefile, so no make install and similar. It requires libfaad2.
To compile etisnoop:
git clone https://github.com/Opendigitalradio/etisnoop.git cd etisnoop make
Usage
The tool can show ETI information, decode the FIG carousel and extract a DAB+ stream
Usage: etisnoop [-v] [-f] [-i filename] [-d stream_index] -v increase verbosity (can be given more than once) -d N decode subchannel N into .dabp, .aac and .wav files -f analyse FIC carousel
Example:
% ./etisnoop -i ../eti/funk.raw.eti -v | head -n50
SYNC: ff 07 3a b6
ERR: ff [No error]
Sync FSYNC: 07 3a b6 [OK]
LDATA
FC - Frame Characterization field: 00 81 10 7a
FCT - Frame Count: 00 [0]
FICF - Fast Information Channel Flag [1 - FIC Information are present]
NST - Number of streams [1]
FP - Frame Phase: 00 [0]
MID - Mode Identity: 02 [Mode 2]
FL - Frame Length [122 words]
STC - Stream Characterisation
STC - Stream Characterisation: 28 00 48 30 [Stream number 0]
SCID - Sub-channel Identifier [10]
SAD - Sub-channel Start Address [0]
TPL - Sub-channel Type and Protection Level [0x12 - Unequal Error Protection. Table switch 0, UEP index 2]
STL - Sub-channel Stream Length [48 => 128 kbit/s]
EOH - End Of Header: 00 00 16 7c
MNSC - Multiplex Network Signalling Channel: 00 00
Header CRC: 16 7c [CRC OK]
FIC Data (96 bytes)
FIG 0 [5 bytes]: 00 c0 00 00 00
FIG 0/0: C/N=0 OE=0 P/D=0: c0 00 00 00
Ensamble ID=0xc000 (Country id=12, Ensamble reference=0), Change flag=0, Alarm flag=0, CIF Count=0/0
FIB CRC: ea f1 [FIB CRC OK]
FIG 0 [5 bytes]: 08 00 33 00 0a
FIG 0/8: C/N=0 OE=0 P/D=0: 00 33 00 0a
FIB CRC: a2 9f [FIB CRC OK]
FIG 1 [21 bytes]: 01 00 33 46 75 6e 6b 00 00 00 00 00 00 00 00 00 00 00 00 ff 00
FIG 1/1: OE=0, Charset=0: 00 33 46 75 6e 6b 00 00 00 00 00 00 00 00 00 00 00 00 ff 00
Service ID 0x0033 label: "Funk", Short label mask: 0xFF00
FIB CRC: 6f b3 [FIB CRC OK]
Stream Data: ff fc 84 00 bc f1 21 22 22 44 44 33 33 22 22 22 22 24 92 40 00 00 00 00 00 00 00 00 aa aa aa aa aa aa aa ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 6d b5 b6 db 6d b6 d6 c5 b1 6c 5b 1b 6d b6 db 6d f3 e7 cf 9f 3e 7c f9 ad 6b 5a d6 db 5b 6d b6 db 6d 6c 5b 16 c5 b1 b6 db 6d b6 df 3e 7c f9 f3 e7 cf 9a d6 b5 ad 6d b5 b6 db 6d b6 d6 c5 b1 6c 5b 1b 6d b6 db 6d f3 e7 cf 9f 3e 7c f9 ad 6b 5a d6 db 5b 6d b6 db 6d 6c 5b 16 c5 b1 b6 db 6d b6 df 3e 7c f9 f3 e7 cf 9a d6 b5 ad 6d b5 b6 db 6d b6 d6 c5 b1 6c 5b 1b 6d b6 db 6d f3 e7 cf 9f 3e 7c f9 ad 6b 5a d6 db 5b 6d b6 db 6d 6c 5b 16 c5 b1 b6 db 6d b6 df 3e 7c f9 f3 e7 cf 9a d6 b5 ad 6d b5 b6 db 6d b6 d6 c5 b1 6c 5b 1b 6d b6 db 6d f3 e7 cf 9f 3e 7c f9 ad 6b 5a d6 db 5b 6d b6 db 6d 6c 5b 16 c5 b1 b6 db 6d b6 df 3e 7c f9 f3 e7 cf 9a d6 b5 ad 6d b5 b6 db 6d b6 d6 c5 b1 6c 5b 1b 6d b6 db 6d f3 e7 cf 9f 3e 7c f9 ad 6b 5a d6 db 5b 6d b6 db 6d 6c 5b 16 c5 b1 b6 db 6d b6 df 3e 7c f9 f3 e7 cf 9a d6 b5 ad 6d b5 b6 db 6d b6 d6 c5 b1 6c 5b 1b 6d b6 db 6d f3 e7 cf 9f 3e 7c f9 ad 6b 5a d6 db 5b 6d b6 db 6d 6c 5b 16 c5 b1 b6 db 6d b6 df 3e 7c f9 f3 e7 cf 9a d6 b5 ad 00 00 00 00 00 51 8b 8b 00 00 [0]
EOF: bf 2d ff ff
CRC: bf 2d [CRC OK]
RFU: ff ff
TIST - Time Stamp: ff 40 a0 00 [256 ms]
Acknowledgements
Many thanks to the team from CSP.it : http://rd.csp.it
