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libgsmhr1/typedefs.h: initial port
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 19 Jun 2024 00:50:29 +0000
parents f35c8fd9ceba
children b66fb6be73c3
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1 Changes from gsm-codec-lib-r2 to gsm-codec-lib-r3:
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2
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3 * Libgsmfrp has been replaced with libgsmfr2, a major version change per SemVer.
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4
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5 * The former dependency on historical libgsm has been eliminated; the
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6 functionality of libgsm (GSM 06.10 encoder and decoder implementation) has
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7 been absorbed into libgsmfr2.
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8
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9 * Libgsmefr version 1.1.0 exhibits approximately 2x performance improvement
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10 over the original version, and also exhibits a small addition to the public
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11 API: the RTP-encoded form of the standard EFR DHF is now provided as a const
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12 datum.
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13
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14 * New library added: libtwamr for 3GPP AMR-NB codec, serving as a replacement
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15 for libopencore-amrnb in Themyscira GSM codec exploration workflows.
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17 * New command line utilities:
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19 + amrefr-* and twamr-* related to libtwamr: see doc/Codec-utils,
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20 doc/AMR-EFR-hybrid-emu and doc/AMR-library-tests articles.
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22 + amrts-pcm8-compact: see doc/Utils-overview article.
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24 + gsmfr-* updates for libgsmfr2: see doc/Codec-utils article.
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26 + gsm[e]fr-dlcap-sync: see doc/Calypso-TCH-downlink article.
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28 * gsmfr-* utilities set: gsmfr-hand-test and gsmfr-max-out hack programs have
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29 been dropped. These hack programs were never properly documented and were
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30 written only as part of a debug chase, in pursuit of a bug that ultimately
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31 turned out to be in our then-hacky patch to osmo-bts-sysmo.
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33 * gsmrec-dump now prints the bit-counting SID classification for both FRv1 and
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34 EFR codecs, and also identifies bit patterns that match the official DHF
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35 (decoder homing frame) for each codec.
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37 * The configuration and build process has been revamped: the full suite of
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38 libraries and utilities can now be installed in any desired file system
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39 location without contortions.
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41 Changes from gsm-codec-lib-r1 to gsm-codec-lib-r2:
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42
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43 * Libgsmfrp evolved from version 1.0.0 to version 1.0.2; please see
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44 doc/FR1-Rx-DTX for a detailing listing of libgsmfrp changes.
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46 * Some new utilities have been developed for studying AMR: see
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47 doc/AMR-study-utils for more information.
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49 * The subject of conversions between 16-bit 2's complement linear PCM and 8-bit
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50 A-law and mu-law PCM formats (G.711) has been thoroughly studied, the findings
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51 have been documented in doc/PCM8-conversions, and some new command line
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52 utilities have been added, described in the same article.
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54 * Many new table generators have been added to the dev subdirectory; some of
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55 them may be useful to other software developers.
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57 * pcap utilities have been split off to a separate rtp-debug-utils repository;
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58 this split was made so that those utilities can be developed freely while the
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59 gsm-codec-lib repository remains under strict release process control.