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annotate doc/EFR-testing @ 282:9ee8ad3d4d30

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frtest: rm gsmfr-hand-test and gsmfr-max-out utils These hack programs were never properly documented and were written only as part of a debug chase, in pursuit of a bug that ultimately turned out to be in our then-hacky patch to osmo-bts-sysmo, before beginning of proper patches in Osmocom. These hack programs need to be dropped from the present sw package because they depend on old libgsm, and we are eliminating that dependency.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 05:44:47 +0000
parents 1e8569000049
children
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3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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1 When it comes to codec libraries, testing for correctness is essential, and EFR
3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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2 is no exception. There is a set of EFR encoder and decoder test sequences
3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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3 published by ETSI in ts_100725v050200p0.zip (GSM 06.54), and our suite of tools
3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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4 includes gsmefr-etsi-enc and gsmefr-etsi-dec test programs that operate on the
3fd48946dcb8 doc/EFR-testing article written
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5 representation formats used by these test sequences. Because these test
3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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6 programs are based on libgsmefr EFR_encode_frame() and EFR_decode_frame()
3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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7 functions, seeing gsmefr-etsi-enc produce output that matches official ETSI
3fd48946dcb8 doc/EFR-testing article written
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8 *.cod files proves that libgsmefr encoder is correct, and seeing gsmefr-etsi-dec
3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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9 produce output that matches official ETSI *.out files proves that libgsmefr
3fd48946dcb8 doc/EFR-testing article written
Mychaela Falconia <falcon@freecalypso.org>
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10 decoder is correct.
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11
3fd48946dcb8 doc/EFR-testing article written
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12 For debugging, we also have gsmefr-cod-parse and gsmefr-dec-parse utilities that
3fd48946dcb8 doc/EFR-testing article written
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13 parse ETSI *.cod and *.dec file formats and dump their content in human-readable
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170e03b20337 doc/EFR-testing (gsmefr-{cod,dec}-parse): document similarity to gsmrec-dump
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14 form similar to gsmrec-dump.
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1e8569000049 doc/EFR-testing: document endian issues
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1e8569000049 doc/EFR-testing: document endian issues
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16 Please note that all ETSI test sequence file formats are endian-dependent: their
1e8569000049 doc/EFR-testing: document endian issues
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17 original programs read and write 16-bit words in the local machine's native byte
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18 order, and whenever you are working with published test sequence files, you have
1e8569000049 doc/EFR-testing: document endian issues
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19 to check to see if they are BE or LE. Our gsmefr-etsi-{enc,dec} and
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20 gsmefr-{cod,dec}-parse programs support both byte orders; the default is LE
1e8569000049 doc/EFR-testing: document endian issues
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21 (matching the main parts of ts_100725v050200p0.zip), or you can select BE with
1e8569000049 doc/EFR-testing: document endian issues
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22 -b option.