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doc/Utils-overview: add new PCM utilities
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 08 May 2023 05:21:12 +0000
parents f4f68c652e98
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1 Here is the complete list of all command line utilities included in the present
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2 package:
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4 amr-cod-parse See AMR-study-utils article.
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5 amr-ietf-parse
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6 amr-cod2ietf
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7 amr-ietf2cod
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9 gsm-amr2efr See AMR-EFR-conversion article.
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10 gsm-efr2amr
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11
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12 gsmefr-cod-parse See EFR-testing article.
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13 gsmefr-dec-parse
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15 gsmefr-decode See Codec-utils article.
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16 gsmefr-decode-r
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17 gsmefr-encode
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18 gsmefr-encode-r
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20 gsmefr-dlcap-dec See Calypso-TCH-downlink article.
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21 gsmefr-dlcap-gsmx
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22 gsmefr-dlcap-parse
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24 gsmefr-etsi-dec See EFR-testing article.
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25 gsmefr-etsi-enc
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27 gsmefr-rec2etsi This program reads an EFR session recording in gsmx
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28 format and converts it into ETSI decoder input (.dec)
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29 format. It was written early in the project as a sanity
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30 check, to verify that the format of TCH uplink from
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31 sysmoBTS in EFR mode matches our expectations, before
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32 embarking on the labor-intensive project to librify EFR
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33 reference code from ETSI.
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34
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35 gsmfr-decode See Codec-utils article.
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36 gsmfr-decode-r
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37 gsmfr-encode
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38 gsmfr-encode-r
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40 gsmfr-dlcap-gsmx See Calypso-TCH-downlink article.
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41 gsmfr-dlcap-parse
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43 gsmfr-hand-test This program was written as part of a debug chase:
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44 there seemed to be a design flaw in libgsmfrp, but the
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45 actual bug turned out to be in the way we patched
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46 osmo-bts-sysmo to produce a continuous RTP stream.
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48 gsmfr-max-out Another test program written as part of the same debug
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49 chase.
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51 gsmfr-preproc This program reads a gsmx file in FR codec format,
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52 passes it through our Rx DTX preprocessor (libgsmfrp),
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53 and writes the preprocessor output to another .gsm file.
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54
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55 gsmrec-dump See Binary-file-format article.
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57 pcm16-check13 This program reads a 16-bit linear PCM recording file
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58 (raw BE by default, or raw LE with -l option) and checks
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59 if the 3 least significant bits of every sample are all
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60 zeros. All linear PCM samples consumed or generated by
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61 GSM codecs are only 13 bits wide, left-justified in
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62 16-bit words, and so is output from G.711 A-law decoding
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63 - thus it is useful to be able to check if a given file
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64 in 16-bit PCM format is purely 13-bit or not.
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66 pcm16-raw2wav See PCM-file-formats article.
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67 pcm16-wav2raw
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69 pcm16-to-alaw See PCM8-conversions article.
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70 pcm16-to-ulaw
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71 pcm8-to-pcm16