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annotate doc/Codec-library-depend @ 172:60e2d6379fce

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osmo-patches/osmo-bts-rtp-bfi.patch: checking in
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 21 Nov 2022 01:05:58 -0800
parents 4f1f3f799295
children 623c64ae6102
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4f1f3f799295 doc/Codec-library-depend: article written
Mychaela Falconia <falcon@freecalypso.org>
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1 One important component of Themyscira Wireless system sw, specifically
4f1f3f799295 doc/Codec-library-depend: article written
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2 themwi-mgw, implements speech transcoding between GSM codecs on the inside and
4f1f3f799295 doc/Codec-library-depend: article written
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3 G.711 on the outside. This essential function creates a dependency on some
4f1f3f799295 doc/Codec-library-depend: article written
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4 specialized libraries that implement the codecs which need to be supported.
4f1f3f799295 doc/Codec-library-depend: article written
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5 The following codec libraries are currently required:
4f1f3f799295 doc/Codec-library-depend: article written
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4f1f3f799295 doc/Codec-library-depend: article written
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7 1) libgsm, the original GSM 06.10 implementation from 1990s;
4f1f3f799295 doc/Codec-library-depend: article written
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4f1f3f799295 doc/Codec-library-depend: article written
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9 2) gsm-codec-lib developed by Mother Mychaela:
4f1f3f799295 doc/Codec-library-depend: article written
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4f1f3f799295 doc/Codec-library-depend: article written
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11 https://www.freecalypso.org/hg/gsm-codec-lib/
4f1f3f799295 doc/Codec-library-depend: article written
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4f1f3f799295 doc/Codec-library-depend: article written
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13 This gsm-codec-lib collection provides two libraries; as of this writing, one
4f1f3f799295 doc/Codec-library-depend: article written
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14 is already implemented while the other is in the plans:
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4f1f3f799295 doc/Codec-library-depend: article written
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16 2a) libgsmfrp is the Rx DTX handler for the original FR codec, a front-end
4f1f3f799295 doc/Codec-library-depend: article written
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17 preprocessor that sits in front of libgsm decoder. This preprocessor
4f1f3f799295 doc/Codec-library-depend: article written
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18 implements functions specified in GSM 06.11, 06.12 and 06.13, and these
4f1f3f799295 doc/Codec-library-depend: article written
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19 functions are required (not optional) for a network-side implementation of
4f1f3f799295 doc/Codec-library-depend: article written
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20 GSM FR codec in a TRAU-like component.
4f1f3f799295 doc/Codec-library-depend: article written
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22 2b) libgsmefr will be a librified (turned into a library) version of the
4f1f3f799295 doc/Codec-library-depend: article written
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23 official reference implementation (from ETSI) of GSM EFR codec.