FreeCalypso > hg > gsm-codec-lib
view doc/Utils-overview @ 506:2d6da062c452
libgsmhr1/sp_rom.[ch]: import original
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 19 Jun 2024 01:55:54 +0000 |
parents | 4f13db3a7086 |
children |
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Here is the complete list of all command line utilities included in the present package: amr-cod-parse See AMR-study-utils article. amr-ietf-parse amr-cod2ietf amr-ietf2cod amrefr-decode-r See AMR-EFR-hybrid-emu article. amrefr-encode-r amrefr-tseq-dec amrefr-tseq-enc amrts-pcm8-compact The set of AMR test sequences shipped by 3GPP as TS 26.074 includes not only linear PCM and AMR-encoded files, but also 8-bit PCM sequences in both A-law and mu-law. However, those PCM8 sequences are shipped in a stupid and inconvenient format: each 8-bit PCM sample is expanded to a 16-bit word, written in LE byte order. This utility converts a PCM8 test sequence file from this weird format into sane PCM8 format with one byte per sample. gsm-amr2efr See AMR-EFR-conversion article. gsm-efr2amr gsmefr-cod-parse See EFR-testing article. gsmefr-dec-parse gsmefr-cod2gsmx This program reads an EFR codec frame stream in ETSI *.cod format and converts it to Themyscira gsmx format. gsmefr-decode See Codec-utils article. gsmefr-decode-r gsmefr-encode gsmefr-encode-r gsmefr-dlcap-dec See Calypso-TCH-downlink article. gsmefr-dlcap-gsmx gsmefr-dlcap-parse gsmefr-dlcap-sync gsmefr-etsi-dec See EFR-testing article. gsmefr-etsi-enc gsmefr-rec2etsi This program reads an EFR session recording in gsmx format and converts it into ETSI decoder input (.dec) format. It was written early in the project as a sanity check, to verify that the format of TCH uplink from sysmoBTS in EFR mode matches our expectations, before embarking on the labor-intensive project to librify EFR reference code from ETSI. gsmfr-cod2std This program reads an FR codec frame stream in ETSI *.cod format and converts it to "standard" *.gsm format. gsmfr-decode See Codec-utils article. gsmfr-decode-r gsmfr-decode-rb gsmfr-encode gsmfr-encode-r gsmfr-dlcap-gsmx See Calypso-TCH-downlink article. gsmfr-dlcap-parse gsmfr-dlcap-sync gsmfr-preproc See FR1-Rx-DTX article. gsmrec-dump See Binary-file-format article. pcm16-check13 This program reads a 16-bit linear PCM recording file (raw BE by default, or raw LE with -l option) and checks if the 3 least significant bits of every sample are all zeros. All linear PCM samples consumed or generated by GSM codecs are only 13 bits wide, left-justified in 16-bit words, and so is output from G.711 A-law decoding - thus it is useful to be able to check if a given file in 16-bit PCM format is purely 13-bit or not. pcm16-raw2wav See PCM-file-formats article. pcm16-wav2raw pcm16-to-alaw See PCM8-conversions article. pcm16-to-ulaw pcm8-to-pcm16 twamr-decode See Codec-utils article. twamr-decode-r twamr-encode twamr-encode-r twamr-tseq-dec See AMR-library-tests article. twamr-tseq-enc