FreeCalypso > hg > gsm-codec-lib

annotate PACKAGING @ 477:4c9222d95647

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libtwamr encoder: always emit frame->mode = mode; In the original implementation of amr_encode_frame(), the 'mode' member of the output struct was set to 0xFF if the output frame type is TX_NO_DATA. This design was made to mimic the mode field (16-bit word) being set to 0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends on this struct member being set in any way, and amr_frame_to_tseq() generates the needed 0xFFFF on its own, based on frame->type being equal to TX_NO_DATA. It is simpler and more efficient to always set frame->mode to the actual encoding mode in amr_encode_frame(), and this new behavior has already been documented in doc/AMR-library-API description in anticipation of the present change.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 18 May 2024 22:30:42 +0000
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children 6724fbb01a09
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1 The present document is intended to be a guide for any parties who are going to
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2 turn the present upstream gsm-codec-lib source package into user-friendly binary
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3 packages for specific distributions.
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5 Naming and attribution
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6 ======================
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7
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8 Please note that the present GSM codec libraries and utilities suite should be
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9 properly classified as Themyscira software and not FreeCalypso. Even though
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10 FreeCalypso and Themyscira software realms currently have the same maintainer,
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11 the two realms have different conventions that matter for packaging and
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12 configuration management:
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14 * FreeCalypso software components are intended for users and tinkerers who work
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15 with GSM phone handsets, GSM MS development boards, SIM cards and related
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16 mobile-side hardware. That software realm uses a fixed /opt/freecalypso
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17 directory hierarchy, non-FHS, which cannot be changed.
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19 * Themyscira software components are intended to run on server machines where
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20 they will often need to interwork closely with Osmocom and other network
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21 software. Unlike FC, ThemWi software does _not_ require a fixed install
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22 location; at Themyscira HQ we use various custom directories under /opt for
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23 both Osmocom CNI and our own ThemWi components, but no one else is being
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24 asked to do what we do! We now follow the general free sw community standard
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25 whereby the default install location is /usr/local, but you are always free
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26 to change it to wherever you like with the standard --prefix option to
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27 configure.
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29 Toward this end, all ThemWi software beginning with the present package will
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30 have a ./configure script (hand-coded, no Autotools) that accepts the standard
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31 --prefix option, allowing the install prefix to be chosen freely.
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33 Note that DESTDIR= setting on 'make install' is now supported! What is the
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34 difference between --prefix argument to ./configure and DESTDIR= on the 'make
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35 install' command? Answer: --prefix indicates the final location where the
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36 software is meant to reside in its installed state, DESTDIR= is a local
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37 modification for the 'make install' operation only, intended for staged installs
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38 as happen in package build scripts.
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39
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40 Package splitting
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41 =================
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42
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43 There are several different ways how the full GSM codec libraries and utilities
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44 suite may be kept together or divided in binary packages:
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46 1) The simplest way is to have one binary package built from the source package,
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47 containing all libraries and utilities.
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48
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49 2) The next option is to produce one package with libraries and a second package
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50 with utilities. The utilities package will then depend on the libraries
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51 package, but not the other way around.
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53 3) The finest division would be to produce a separate package for each codec
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54 library (libgsmefr, libgsmfr2, libtwamr) and then a utilities package. The
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55 set of utilities included in the present suite does not have clear-cut
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56 logical divisions, hence it would probably make the most sense to have just
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57 one utilities packages that depends on all of the libraries.
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58
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59 The choice of approach is left to the discretion of individual packagers or
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60 package maintainers.
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62 Package versions
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63 ================
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64
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65 If separate packages are made for each codec library, these packages should be
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66 versioned with their own proper semantic versions listed in the Library-versions
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67 document, as opposed to the larger gsm-codec-lib tarball release version. If a
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68 later gsm-codec-lib tarball release exhibits no changes in the libraries (the
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69 only changes are in the command line utilities) or if only some of the libraries
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70 exhibit changes (as indicated with a new semantic version), then NO new
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71 downstream packages should be made for unchanged libraries - instead already
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72 made binary packages for that library version (SemVer) should be retained.
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73
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74 Downstream package version numbers for command line utilities packages are up
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75 to the discretion of packaging maintainers; using gsm-codec-lib tarball release
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76 numbers is acceptable.
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77
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78 Patience, please
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79 ================
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80
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81 Please make downstream package releases *only* from officially published tarball
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82 releases of gsm-codec-lib - please do *not* make packaged builds or "releases"
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83 from our Mercurial repository. Any time we have a new development that is
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84 expected to be useful to downstream end users, we shall make a proper tarball
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85 release, and if there are any changes in the libraries, we shall assign new
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86 semantic versions as appropriate.