FreeCalypso > hg > gsm-codec-lib
view CHANGES @ 495:aee13079db3c
libgsmhr1: implement SID reset
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 17 Jun 2024 23:25:19 +0000 |
parents | f35c8fd9ceba |
children |
line wrap: on
line source
Changes from gsm-codec-lib-r2 to gsm-codec-lib-r3: * Libgsmfrp has been replaced with libgsmfr2, a major version change per SemVer. * The former dependency on historical libgsm has been eliminated; the functionality of libgsm (GSM 06.10 encoder and decoder implementation) has been absorbed into libgsmfr2. * Libgsmefr version 1.1.0 exhibits approximately 2x performance improvement over the original version, and also exhibits a small addition to the public API: the RTP-encoded form of the standard EFR DHF is now provided as a const datum. * New library added: libtwamr for 3GPP AMR-NB codec, serving as a replacement for libopencore-amrnb in Themyscira GSM codec exploration workflows. * New command line utilities: + amrefr-* and twamr-* related to libtwamr: see doc/Codec-utils, doc/AMR-EFR-hybrid-emu and doc/AMR-library-tests articles. + amrts-pcm8-compact: see doc/Utils-overview article. + gsmfr-* updates for libgsmfr2: see doc/Codec-utils article. + gsm[e]fr-dlcap-sync: see doc/Calypso-TCH-downlink article. * gsmfr-* utilities set: gsmfr-hand-test and gsmfr-max-out hack programs have been dropped. 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. * gsmrec-dump now prints the bit-counting SID classification for both FRv1 and EFR codecs, and also identifies bit patterns that match the official DHF (decoder homing frame) for each codec. * The configuration and build process has been revamped: the full suite of libraries and utilities can now be installed in any desired file system location without contortions. Changes from gsm-codec-lib-r1 to gsm-codec-lib-r2: * Libgsmfrp evolved from version 1.0.0 to version 1.0.2; please see doc/FR1-Rx-DTX for a detailing listing of libgsmfrp changes. * Some new utilities have been developed for studying AMR: see doc/AMR-study-utils for more information. * The subject of conversions between 16-bit 2's complement linear PCM and 8-bit A-law and mu-law PCM formats (G.711) has been thoroughly studied, the findings have been documented in doc/PCM8-conversions, and some new command line utilities have been added, described in the same article. * Many new table generators have been added to the dev subdirectory; some of them may be useful to other software developers. * pcap utilities have been split off to a separate rtp-debug-utils repository; this split was made so that those utilities can be developed freely while the gsm-codec-lib repository remains under strict release process control.