mirror of https://gerrit.osmocom.org/libosmocore
libosmocoding: migrate transcoding routines from OsmoBTS
There are some projects, such as GR-GSM and OsmocomBB, which would benefit from using one shared implementation of GSM 05.03 code. So, this commit introduces a new sub-library called libosmocoding, which (for now) provides GSM, GPRS and EDGE transcoding routines, migrated from OsmoBTS. The original GSM 05.03 code from OsmoBTS was relicensed under GPLv2-or-later with permission of copyright holders (Andreas Eversberg, Alexander Chemeris and Tom Tsou). The following data types are currently supported: - xCCH - PDTCH (CS 1-4 and MCS 1-9) - TCH/FR - TCH/HR - TCH/AFS - RCH/AHS - RACH - SCH Change-Id: I0c3256b87686d878e4e716d12393cad5924fdfa1changes/33/933/16
Vadim Yanitskiy
parent
68930e85b5
commit
3262f820b5
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@ -36,6 +36,7 @@ Doxyfile.core
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Doxyfile.gsm
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Doxyfile.vty
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Doxyfile.codec
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Doxyfile.coding
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debian/autoreconf.after
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debian/autoreconf.before
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@ -73,6 +74,7 @@ tests/bits/bitrev_test
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tests/a5/a5_test
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tests/comp128/comp128_test
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tests/auth/milenage_test
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tests/coding/coding_test
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tests/conv/conv_test
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tests/lapd/lapd_test
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tests/gsm0808/gsm0808_test
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@ -105,6 +107,7 @@ utils/osmo-auc-gen
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utils/osmo-sim-test
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doc/codec
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doc/coding
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doc/core
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doc/vty/latex
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doc/vty/html
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File diff suppressed because it is too large
Load Diff
16
Makefile.am
16
Makefile.am
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@ -1,11 +1,11 @@
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ACLOCAL_AMFLAGS = -I m4
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AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
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SUBDIRS = include src src/vty src/codec src/gsm src/gb src/ctrl src/sim tests utils
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SUBDIRS = include src src/vty src/codec src/gsm src/coding src/gb src/ctrl src/sim tests utils
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pkgconfigdir = $(libdir)/pkgconfig
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pkgconfig_DATA = libosmocore.pc libosmocodec.pc libosmovty.pc libosmogsm.pc \
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libosmogb.pc libosmoctrl.pc
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libosmogb.pc libosmoctrl.pc libosmocoding.pc
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BUILT_SOURCES = $(top_srcdir)/.version
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$(top_srcdir)/.version:
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@ -22,7 +22,8 @@ html_DATA = $(top_builddir)/doc/html.tar
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$(html_DATA): $(top_builddir)/doc/core/html/index.html \
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$(top_builddir)/doc/gsm/html/index.html \
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$(top_builddir)/doc/vty/html/index.html \
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$(top_builddir)/doc/codec/html/index.html
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$(top_builddir)/doc/codec/html/index.html \
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$(top_builddir)/doc/coding/html/index.html
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cd $(top_builddir)/doc && tar cf html.tar */html
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$(top_builddir)/doc/core/html/index.html: $(SOURCES) Doxyfile.core
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@ -44,13 +45,18 @@ $(top_builddir)/doc/codec/html/index.html: $(SOURCES) Doxyfile.codec
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mkdir -p doc/codec
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$(DOXYGEN) Doxyfile.codec
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$(top_builddir)/doc/coding/html/index.html: Doxyfile.coding
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@rm -rf doc/coding
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mkdir -p doc/coding
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$(DOXYGEN) Doxyfile.coding
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install-data-hook:
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cd $(DESTDIR)$(htmldir) && tar xf html.tar && rm -f html.tar
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uninstall-hook:
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cd $(DESTDIR)$(htmldir) && rm -rf {core,gsm,vty,codec}
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cd $(DESTDIR)$(htmldir) && rm -rf {core,gsm,vty,codec,coding}
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DX_CLEAN = doc/{core,gsm,vty,codec}/html/search/* doc/{core,gsm,vty,codec}/{html,latex}/* doc/html.tar doc/{core,gsm,vty,codec}/doxygen_sqlite3.db doc/*.tag
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DX_CLEAN = doc/{core,gsm,vty,codec,coding}/html/search/* doc/{core,gsm,vty,codec,coding}/{html,latex}/* doc/html.tar doc/{core,gsm,vty,codec,coding}/doxygen_sqlite3.db doc/*.tag
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endif
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MOSTLYCLEANFILES = $(DX_CLEAN)
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@ -42,6 +42,7 @@ case $host in
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*)
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LTLDFLAGS_OSMOGB='-Wl,--version-script=$(srcdir)/libosmogb.map'
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LTLDFLAGS_OSMOGSM='-Wl,--version-script=$(srcdir)/libosmogsm.map'
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LTLDFLAGS_OSMOCODING='-Wl,--version-script=$(srcdir)/libosmocoding.map'
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;;
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esac
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AC_SUBST(LTLDFLAGS_OSMOGB)
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@ -228,6 +229,7 @@ fi
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AC_OUTPUT(
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libosmocore.pc
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libosmocodec.pc
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libosmocoding.pc
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libosmovty.pc
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libosmogsm.pc
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libosmogb.pc
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@ -237,6 +239,7 @@ AC_OUTPUT(
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src/Makefile
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src/vty/Makefile
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src/codec/Makefile
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src/coding/Makefile
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src/sim/Makefile
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src/gsm/Makefile
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src/gb/Makefile
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@ -248,4 +251,5 @@ AC_OUTPUT(
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Doxyfile.gsm
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Doxyfile.vty
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Doxyfile.codec
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Doxyfile.coding
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Makefile)
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@ -25,6 +25,7 @@ Section: libs
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Architecture: any
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Multi-Arch: foreign
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Depends: libosmocodec0 (= ${binary:Version}),
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libosmocoding0 (= ${binary:Version}),
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libosmocore8 (= ${binary:Version}),
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libosmogb4 (= ${binary:Version}),
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libosmogsm7 (= ${binary:Version}),
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@ -76,6 +77,38 @@ Description: Documentation for the osmo codec library
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.
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This package contains the documentation for the libosmocodec library.
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Package: libosmocoding0
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Section: libs
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Architecture: any
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Multi-Arch: same
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Depends: ${shlibs:Depends},
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${misc:Depends}
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Pre-Depends: ${misc:Pre-Depends}
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Description: Osmo coding library
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This is part of the libosmocore "meta"-library. The libosmocore library
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contains various utility functions that were originally developed as part of
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the OpenBSC project, but which are of a more generic nature and thus useful to
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(at least) other programs that are developed in the sphere of Free Software /
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Open Source mobile communication.
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.
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The libosmocoding library in particular contains the implementation of
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GSM, GPRS and EDGE transcoding routines, migrated from OsmoBTS.
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Package: libosmocoding-doc
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Architecture: all
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Section: doc
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Depends: ${misc:Depends},
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libosmocoding0,
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libjs-jquery
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Description: Documentation for the osmo coding library
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This is part of the libosmocore "meta"-library. The libosmocore library
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contains various utility functions that were originally developed as part of
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the OpenBSC project, but which are of a more generic nature and thus useful to
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(at least) other programs that are developed in the sphere of Free Software /
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Open Source mobile communication.
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.
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This package contains the documentation for the libosmocoding library.
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Package: libosmocore8
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Section: libs
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Architecture: any
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@ -100,6 +133,7 @@ Depends: ${misc:Depends},
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libosmocore8,
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libjs-jquery,
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libosmocodec-doc,
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libosmocoding-doc,
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libosmogsm-doc,
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libosmovty-doc
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Description: Documentation for the Osmo Core library
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@ -69,6 +69,11 @@ nobase_include_HEADERS = \
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osmocom/gsm/gsm0480.h \
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osmocom/gsm/gsm0502.h \
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osmocom/gsm/gsm0503.h \
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osmocom/coding/gsm0503_tables.h \
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osmocom/coding/gsm0503_parity.h \
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osmocom/coding/gsm0503_mapping.h \
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osmocom/coding/gsm0503_interleaving.h \
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osmocom/coding/gsm0503_coding.h \
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osmocom/gsm/gsm0808.h \
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osmocom/gsm/gsm23003.h \
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osmocom/gsm/gsm48.h \
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@ -0,0 +1,63 @@
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#pragma once
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#include <stdint.h>
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#include <osmocom/core/bits.h>
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#define GSM0503_GPRS_BURSTS_NBITS (116 * 4)
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#define GSM0503_EGPRS_BURSTS_NBITS (348 * 4)
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#define NUM_BYTES(N) ((N + 8 - 1) / 8)
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enum gsm0503_egprs_mcs {
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EGPRS_MCS0,
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EGPRS_MCS1,
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EGPRS_MCS2,
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EGPRS_MCS3,
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EGPRS_MCS4,
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EGPRS_MCS5,
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EGPRS_MCS6,
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EGPRS_MCS7,
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EGPRS_MCS8,
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EGPRS_MCS9,
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EGPRS_NUM_MCS,
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};
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int gsm0503_xcch_encode(ubit_t *bursts, uint8_t *l2_data);
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int gsm0503_xcch_decode(uint8_t *l2_data, sbit_t *bursts,
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int *n_errors, int *n_bits_total);
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int gsm0503_pdtch_encode(ubit_t *bursts, uint8_t *l2_data, uint8_t l2_len);
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int gsm0503_pdtch_decode(uint8_t *l2_data, sbit_t *bursts, uint8_t *usf_p,
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int *n_errors, int *n_bits_total);
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int gsm0503_pdtch_egprs_encode(ubit_t *bursts, uint8_t *l2_data,
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uint8_t l2_len);
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int gsm0503_pdtch_egprs_decode(uint8_t *l2_data, sbit_t *bursts,
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uint16_t nbits, uint8_t *usf_p, int *n_errors, int *n_bits_total);
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int gsm0503_tch_fr_encode(ubit_t *bursts, uint8_t *tch_data, int len,
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int net_order);
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int gsm0503_tch_fr_decode(uint8_t *tch_data, sbit_t *bursts, int net_order,
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int efr, int *n_errors, int *n_bits_total);
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int gsm0503_tch_hr_encode(ubit_t *bursts, uint8_t *tch_data, int len);
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int gsm0503_tch_hr_decode(uint8_t *tch_data, sbit_t *bursts, int odd,
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int *n_errors, int *n_bits_total);
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int gsm0503_tch_afs_encode(ubit_t *bursts, uint8_t *tch_data, int len,
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int codec_mode_req, uint8_t *codec, int codecs, uint8_t ft,
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uint8_t cmr);
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int gsm0503_tch_afs_decode(uint8_t *tch_data, sbit_t *bursts,
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int codec_mode_req, uint8_t *codec, int codecs, uint8_t *ft,
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uint8_t *cmr, int *n_errors, int *n_bits_total);
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int gsm0503_tch_ahs_encode(ubit_t *bursts, uint8_t *tch_data, int len,
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int codec_mode_req, uint8_t *codec, int codecs, uint8_t ft, uint8_t cmr);
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int gsm0503_tch_ahs_decode(uint8_t *tch_data, sbit_t *bursts, int odd,
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int codec_mode_req, uint8_t *codec, int codecs, uint8_t *ft,
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uint8_t *cmr, int *n_errors, int *n_bits_total);
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int gsm0503_rach_encode(ubit_t *burst, uint8_t *ra, uint8_t bsic);
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int gsm0503_rach_decode(uint8_t *ra, sbit_t *burst, uint8_t bsic);
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int gsm0503_sch_encode(ubit_t *burst, uint8_t *sb_info);
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int gsm0503_sch_decode(uint8_t *sb_info, sbit_t *burst);
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@ -0,0 +1,51 @@
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#pragma once
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#include <osmocom/core/bits.h>
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void gsm0503_xcch_deinterleave(sbit_t *cB, const sbit_t *iB);
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void gsm0503_xcch_interleave(ubit_t *cB, ubit_t *iB);
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void gsm0503_tch_fr_deinterleave(sbit_t *cB, sbit_t *iB);
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void gsm0503_tch_fr_interleave(ubit_t *cB, ubit_t *iB);
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void gsm0503_tch_hr_deinterleave(sbit_t *cB, sbit_t *iB);
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void gsm0503_tch_hr_interleave(ubit_t *cB, ubit_t *iB);
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void gsm0503_mcs1_ul_deinterleave(sbit_t *hc, sbit_t *dc, const sbit_t *iB);
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void gsm0503_mcs1_ul_interleave(const ubit_t *hc,
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const ubit_t *dc, ubit_t *iB);
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void gsm0503_mcs1_dl_deinterleave(sbit_t *u, sbit_t *hc,
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sbit_t *dc, const sbit_t *iB);
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void gsm0503_mcs1_dl_interleave(const ubit_t *up, const ubit_t *hc,
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const ubit_t *dc, ubit_t *iB);
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void gsm0503_mcs5_ul_deinterleave(sbit_t *hc, sbit_t *dc,
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const sbit_t *hi, const sbit_t *di);
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void gsm0503_mcs5_ul_interleave(const ubit_t *hc, const ubit_t *dc,
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ubit_t *hi, ubit_t *di);
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void gsm0503_mcs5_dl_deinterleave(sbit_t *hc, sbit_t *dc,
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const sbit_t *hi, const sbit_t *di);
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void gsm0503_mcs5_dl_interleave(const ubit_t *hc, const ubit_t *dc,
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ubit_t *hi, ubit_t *di);
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void gsm0503_mcs7_ul_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
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const sbit_t *hi, const sbit_t *di);
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void gsm0503_mcs7_ul_interleave(const ubit_t *hc, const ubit_t *c1,
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const ubit_t *c2, ubit_t *hi, ubit_t *di);
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void gsm0503_mcs7_dl_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
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const sbit_t *hi, const sbit_t *di);
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void gsm0503_mcs7_dl_interleave(const ubit_t *hc, const ubit_t *c1,
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const ubit_t *c2, ubit_t *hi, ubit_t *di);
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void gsm0503_mcs8_ul_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
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const sbit_t *hi, const sbit_t *di);
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void gsm0503_mcs8_ul_interleave(const ubit_t *hc, const ubit_t *c1,
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const ubit_t *c2, ubit_t *hi, ubit_t *di);
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void gsm0503_mcs8_dl_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
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const sbit_t *hi, const sbit_t *di);
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void gsm0503_mcs8_dl_interleave(const ubit_t *hc, const ubit_t *c1,
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const ubit_t *c2, ubit_t *hi, ubit_t *di);
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@ -0,0 +1,33 @@
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#pragma once
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#include <osmocom/core/bits.h>
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void gsm0503_xcch_burst_unmap(sbit_t *iB, const sbit_t *eB,
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sbit_t *hl, sbit_t *hn);
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void gsm0503_xcch_burst_map(ubit_t *iB, ubit_t *eB, const ubit_t *hl,
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const ubit_t *hn);
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void gsm0503_tch_burst_unmap(sbit_t *iB, sbit_t *eB, sbit_t *h, int odd);
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void gsm0503_tch_burst_map(ubit_t *iB, ubit_t *eB, const ubit_t *h, int odd);
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void gsm0503_mcs5_ul_burst_map(const ubit_t *di, ubit_t *eB,
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const ubit_t *hi, int B);
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void gsm0503_mcs5_ul_burst_unmap(sbit_t *di, const sbit_t *eB,
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sbit_t *hi, int B);
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void gsm0503_mcs7_ul_burst_map(const ubit_t *di, ubit_t *eB,
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const ubit_t *hi, int B);
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void gsm0503_mcs7_ul_burst_unmap(sbit_t *di, const sbit_t *eB,
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sbit_t *hi, int B);
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void gsm0503_mcs5_dl_burst_map(const ubit_t *di, ubit_t *eB,
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const ubit_t *hi, const ubit_t *up, int B);
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void gsm0503_mcs5_dl_burst_unmap(sbit_t *di, const sbit_t *eB,
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sbit_t *hi, sbit_t *up, int B);
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void gsm0503_mcs7_dl_burst_map(const ubit_t *di, ubit_t *eB,
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const ubit_t *hi, const ubit_t *up, int B);
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void gsm0503_mcs7_dl_burst_unmap(sbit_t *di, const sbit_t *eB,
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sbit_t *hi, sbit_t *up, int B);
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void gsm0503_mcs5_burst_swap(sbit_t *eB);
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@ -0,0 +1,13 @@
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#pragma once
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#include <osmocom/core/crcgen.h>
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const struct osmo_crc64gen_code gsm0503_fire_crc40;
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const struct osmo_crc16gen_code gsm0503_cs234_crc16;
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const struct osmo_crc8gen_code gsm0503_mcs_crc8_hdr;
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const struct osmo_crc16gen_code gsm0503_mcs_crc12;
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const struct osmo_crc8gen_code gsm0503_rach_crc6;
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const struct osmo_crc16gen_code gsm0503_sch_crc10;
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const struct osmo_crc8gen_code gsm0503_tch_fr_crc3;
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const struct osmo_crc8gen_code gsm0503_tch_efr_crc8;
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const struct osmo_crc8gen_code gsm0503_amr_crc6;
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@ -0,0 +1,50 @@
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#pragma once
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#include <stdint.h>
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#include <osmocom/core/bits.h>
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|
||||
extern const ubit_t gsm0503_pdtch_hl_hn_ubit[4][8];
|
||||
extern const ubit_t gsm0503_pdtch_edge_hl_hn_ubit[3][8];
|
||||
extern const sbit_t gsm0503_pdtch_hl_hn_sbit[4][8];
|
||||
extern const sbit_t gsm0503_pdtch_edge_hl_hn_sbit[3][8];
|
||||
extern const ubit_t gsm0503_usf2six[8][6];
|
||||
extern const ubit_t gsm0503_usf2twelve_ubit[8][12];
|
||||
extern const sbit_t gsm0503_usf2twelve_sbit[8][12];
|
||||
extern const uint8_t gsm0503_puncture_cs2[588];
|
||||
extern const uint8_t gsm0503_puncture_cs3[676];
|
||||
extern const uint8_t gsm0503_puncture_mcs1_dl_hdr[108];
|
||||
extern const uint8_t gsm0503_puncture_mcs1_ul_hdr[117];
|
||||
extern const uint8_t gsm0503_puncture_mcs1_p1[588];
|
||||
extern const uint8_t gsm0503_puncture_mcs1_p2[588];
|
||||
extern const uint8_t gsm0503_puncture_mcs2_p1[732];
|
||||
extern const uint8_t gsm0503_puncture_mcs2_p2[732];
|
||||
extern const uint8_t gsm0503_puncture_mcs3_p1[948];
|
||||
extern const uint8_t gsm0503_puncture_mcs3_p2[948];
|
||||
extern const uint8_t gsm0503_puncture_mcs3_p3[948];
|
||||
extern const uint8_t gsm0503_puncture_mcs4_p1[1116];
|
||||
extern const uint8_t gsm0503_puncture_mcs4_p2[1116];
|
||||
extern const uint8_t gsm0503_puncture_mcs4_p3[1116];
|
||||
extern const uint8_t gsm0503_puncture_mcs5_p1[1404];
|
||||
extern const uint8_t gsm0503_puncture_mcs5_p2[1404];
|
||||
extern const uint8_t gsm0503_puncture_mcs6_p1[1836];
|
||||
extern const uint8_t gsm0503_puncture_mcs6_p2[1836];
|
||||
extern const uint8_t gsm0503_puncture_mcs7_dl_hdr[135];
|
||||
extern const uint8_t gsm0503_puncture_mcs7_ul_hdr[162];
|
||||
extern const uint8_t gsm0503_puncture_mcs7_p1[1404];
|
||||
extern const uint8_t gsm0503_puncture_mcs7_p2[1404];
|
||||
extern const uint8_t gsm0503_puncture_mcs7_p3[1404];
|
||||
extern const uint8_t gsm0503_puncture_mcs8_p1[1692];
|
||||
extern const uint8_t gsm0503_puncture_mcs8_p2[1692];
|
||||
extern const uint8_t gsm0503_puncture_mcs8_p3[1692];
|
||||
extern const uint8_t gsm0503_puncture_mcs9_p1[1836];
|
||||
extern const uint8_t gsm0503_puncture_mcs9_p2[1836];
|
||||
extern const uint8_t gsm0503_puncture_mcs9_p3[1836];
|
||||
extern const uint16_t gsm0503_interleave_mcs5[1248];
|
||||
extern const uint8_t gsm0503_gsm_fr_map[76];
|
||||
extern const uint8_t gsm0503_gsm_efr_protected_bits[65];
|
||||
extern const ubit_t gsm0503_afs_ic_ubit[4][8];
|
||||
extern const sbit_t gsm0503_afs_ic_sbit[4][8];
|
||||
extern const ubit_t gsm0503_ahs_ic_ubit[4][4];
|
||||
extern const sbit_t gsm0503_ahs_ic_sbit[4][4];
|
||||
extern const uint8_t gsm0503_tch_hr_interleaving[228][2];
|
||||
extern const ubit_t gsm0503_mcs5_usf_precode_table[8][36];
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
prefix=@prefix@
|
||||
exec_prefix=@exec_prefix@
|
||||
libdir=@libdir@
|
||||
includedir=@includedir@
|
||||
|
||||
Name: Osmocom L1 transcoding Library
|
||||
Description: C Utility Library
|
||||
Version: @VERSION@
|
||||
Libs: -L${libdir} -losmocoding -losmocodec -losmogsm -losmocore
|
||||
Cflags: -I${includedir}/
|
||||
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
# This is _NOT_ the library release version, it's an API version.
|
||||
# Please read Chapter 6 "Library interface versions" of the libtool
|
||||
# documentation before making any modification
|
||||
LIBVERSION = 0:0:0
|
||||
|
||||
AM_CPPFLAGS = -I$(top_srcdir)/include $(TALLOC_CFLAGS)
|
||||
AM_CFLAGS = -Wall
|
||||
|
||||
lib_LTLIBRARIES = libosmocoding.la
|
||||
|
||||
libosmocoding_la_SOURCES = \
|
||||
gsm0503_interleaving.c \
|
||||
gsm0503_mapping.c \
|
||||
gsm0503_tables.c \
|
||||
gsm0503_parity.c \
|
||||
gsm0503_coding.c
|
||||
libosmocoding_la_LDFLAGS = \
|
||||
-version-info \
|
||||
$(LIBVERSION) \
|
||||
-no-undefined \
|
||||
$(TALLOC_LIBS)
|
||||
libosmocoding_la_LIBADD = \
|
||||
../libosmocore.la \
|
||||
../gsm/libosmogsm.la \
|
||||
../codec/libosmocodec.la
|
||||
|
||||
EXTRA_DIST = libosmocoding.map
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,573 @@
|
|||
/*
|
||||
* (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
|
||||
* (C) 2016 by Tom Tsou <tom.tsou@ettus.com>
|
||||
*
|
||||
* All Rights Reserved
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <osmocom/core/bits.h>
|
||||
#include <osmocom/coding/gsm0503_tables.h>
|
||||
#include <osmocom/coding/gsm0503_interleaving.h>
|
||||
|
||||
/*
|
||||
* GSM xCCH interleaving and burst mapping
|
||||
*
|
||||
* Interleaving:
|
||||
*
|
||||
* Given 456 coded input bits, form 4 blocks of 114 bits:
|
||||
*
|
||||
* i(B, j) = c(n, k) k = 0, ..., 455
|
||||
* n = 0, ..., N, N + 1, ...
|
||||
* B = B_0 + 4n + (k mod 4)
|
||||
* j = 2(49k mod 57) + ((k mod 8) div 4)
|
||||
*
|
||||
* Mapping on Burst:
|
||||
*
|
||||
* e(B, j) = i(B, j)
|
||||
* e(B, 59 + j) = i(B, 57 + j) j = 0, ..., 56
|
||||
* e(B, 57) = h_l(B)
|
||||
* e(B, 58) = h_n(B)
|
||||
*
|
||||
* Where hl(B) and hn(B) are bits in burst B indicating flags.
|
||||
*/
|
||||
|
||||
void gsm0503_xcch_deinterleave(sbit_t *cB, const sbit_t *iB)
|
||||
{
|
||||
int j, k, B;
|
||||
|
||||
for (k = 0; k < 456; k++) {
|
||||
B = k & 3;
|
||||
j = 2 * ((49 * k) % 57) + ((k & 7) >> 2);
|
||||
cB[k] = iB[B * 114 + j];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_xcch_interleave(ubit_t *cB, ubit_t *iB)
|
||||
{
|
||||
int j, k, B;
|
||||
|
||||
for (k = 0; k < 456; k++) {
|
||||
B = k & 3;
|
||||
j = 2 * ((49 * k) % 57) + ((k & 7) >> 2);
|
||||
iB[B * 114 + j] = cB[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs1_dl_deinterleave(sbit_t *u, sbit_t *hc,
|
||||
sbit_t *dc, const sbit_t *iB)
|
||||
{
|
||||
int k;
|
||||
sbit_t c[452];
|
||||
sbit_t cp[456];
|
||||
|
||||
gsm0503_xcch_deinterleave(cp, iB);
|
||||
|
||||
for (k = 0; k < 25; k++)
|
||||
c[k] = cp[k];
|
||||
for (k = 26; k < 82; k++)
|
||||
c[k - 1] = cp[k];
|
||||
for (k = 83; k < 139; k++)
|
||||
c[k - 2] = cp[k];
|
||||
for (k = 140; k < 424; k++)
|
||||
c[k - 3] = cp[k];
|
||||
for (k = 425; k < 456; k++)
|
||||
c[k - 4] = cp[k];
|
||||
|
||||
if (u) {
|
||||
for (k = 0; k < 12; k++)
|
||||
u[k] = c[k];
|
||||
}
|
||||
|
||||
if (hc) {
|
||||
for (k = 12; k < 80; k++)
|
||||
hc[k - 12] = c[k];
|
||||
}
|
||||
|
||||
if (dc) {
|
||||
for (k = 80; k < 452; k++)
|
||||
dc[k - 80] = c[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs1_dl_interleave(const ubit_t *up, const ubit_t *hc,
|
||||
const ubit_t *dc, ubit_t *iB)
|
||||
{
|
||||
int k;
|
||||
ubit_t c[452];
|
||||
ubit_t cp[456];
|
||||
|
||||
for (k = 0; k < 12; k++)
|
||||
c[k] = up[k];
|
||||
for (k = 12; k < 80; k++)
|
||||
c[k] = hc[k - 12];
|
||||
for (k = 80; k < 452; k++)
|
||||
c[k] = dc[k - 80];
|
||||
|
||||
for (k = 0; k < 25; k++)
|
||||
cp[k] = c[k];
|
||||
for (k = 26; k < 82; k++)
|
||||
cp[k] = c[k - 1];
|
||||
for (k = 83; k < 139; k++)
|
||||
cp[k] = c[k - 2];
|
||||
for (k = 140; k < 424; k++)
|
||||
cp[k] = c[k - 3];
|
||||
for (k = 425; k < 456; k++)
|
||||
cp[k] = c[k - 4];
|
||||
|
||||
cp[25] = 0;
|
||||
cp[82] = 0;
|
||||
cp[139] = 0;
|
||||
cp[424] = 0;
|
||||
|
||||
gsm0503_xcch_interleave(cp, iB);
|
||||
}
|
||||
|
||||
void gsm0503_mcs1_ul_deinterleave(sbit_t *hc, sbit_t *dc, const sbit_t *iB)
|
||||
{
|
||||
int k;
|
||||
sbit_t c[452];
|
||||
sbit_t cp[456];
|
||||
|
||||
gsm0503_xcch_deinterleave(cp, iB);
|
||||
|
||||
for (k = 0; k < 25; k++)
|
||||
c[k] = cp[k];
|
||||
for (k = 26; k < 82; k++)
|
||||
c[k - 1] = cp[k];
|
||||
for (k = 83; k < 139; k++)
|
||||
c[k - 2] = cp[k];
|
||||
for (k = 140; k < 424; k++)
|
||||
c[k - 3] = cp[k];
|
||||
for (k = 425; k < 456; k++)
|
||||
c[k - 4] = cp[k];
|
||||
|
||||
if (hc) {
|
||||
for (k = 0; k < 80; k++)
|
||||
hc[k] = c[k];
|
||||
}
|
||||
|
||||
if (dc) {
|
||||
for (k = 80; k < 452; k++)
|
||||
dc[k - 80] = c[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs1_ul_interleave(const ubit_t *hc, const ubit_t *dc, ubit_t *iB)
|
||||
{
|
||||
int k;
|
||||
ubit_t c[452];
|
||||
ubit_t cp[456];
|
||||
|
||||
for (k = 0; k < 80; k++)
|
||||
c[k] = hc[k];
|
||||
for (k = 80; k < 452; k++)
|
||||
c[k] = dc[k - 80];
|
||||
|
||||
for (k = 0; k < 25; k++)
|
||||
cp[k] = c[k];
|
||||
for (k = 26; k < 82; k++)
|
||||
cp[k] = c[k - 1];
|
||||
for (k = 83; k < 139; k++)
|
||||
cp[k] = c[k - 2];
|
||||
for (k = 140; k < 424; k++)
|
||||
cp[k] = c[k - 3];
|
||||
for (k = 425; k < 456; k++)
|
||||
cp[k] = c[k - 4];
|
||||
|
||||
cp[25] = 0;
|
||||
cp[82] = 0;
|
||||
cp[139] = 0;
|
||||
cp[424] = 0;
|
||||
|
||||
gsm0503_xcch_interleave(cp, iB);
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_ul_interleave(const ubit_t *hc, const ubit_t *dc,
|
||||
ubit_t *hi, ubit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
|
||||
/* Header */
|
||||
for (k = 0; k < 136; k++) {
|
||||
j = 34 * (k % 4) + 2 * (11 * k % 17) + k % 8 / 4;
|
||||
hi[j] = hc[k];
|
||||
}
|
||||
|
||||
/* Data */
|
||||
for (k = 0; k < 1248; k++) {
|
||||
j = gsm0503_interleave_mcs5[k];
|
||||
di[j] = dc[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_ul_deinterleave(sbit_t *hc, sbit_t *dc,
|
||||
const sbit_t *hi, const sbit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
|
||||
/* Header */
|
||||
if (hc) {
|
||||
for (k = 0; k < 136; k++) {
|
||||
j = 34 * (k % 4) + 2 * (11 * k % 17) + k % 8 / 4;
|
||||
hc[k] = hi[j];
|
||||
}
|
||||
}
|
||||
|
||||
/* Data */
|
||||
if (dc) {
|
||||
for (k = 0; k < 1248; k++) {
|
||||
j = gsm0503_interleave_mcs5[k];
|
||||
dc[k] = di[j];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_dl_interleave(const ubit_t *hc, const ubit_t *dc,
|
||||
ubit_t *hi, ubit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
|
||||
/* Header */
|
||||
for (k = 0; k < 100; k++) {
|
||||
j = 25 * (k % 4) + ((17 * k) % 25);
|
||||
hi[j] = hc[k];
|
||||
}
|
||||
|
||||
/* Data */
|
||||
for (k = 0; k < 1248; k++) {
|
||||
j = gsm0503_interleave_mcs5[k];
|
||||
di[j] = dc[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_dl_deinterleave(sbit_t *hc, sbit_t *dc,
|
||||
const sbit_t *hi, const sbit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
|
||||
/* Header */
|
||||
if (hc) {
|
||||
for (k = 0; k < 100; k++) {
|
||||
j = 25 * (k % 4) + ((17 * k) % 25);
|
||||
hc[k] = hi[j];
|
||||
}
|
||||
}
|
||||
|
||||
/* Data */
|
||||
if (dc) {
|
||||
for (k = 0; k < 1248; k++) {
|
||||
j = gsm0503_interleave_mcs5[k];
|
||||
dc[k] = di[j];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs7_dl_interleave(const ubit_t *hc, const ubit_t *c1,
|
||||
const ubit_t *c2, ubit_t *hi, ubit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
for (k = 0; k < 124; k++) {
|
||||
j = 31 * (k % 4) + ((17 * k) % 31);
|
||||
hi[j] = hc[k];
|
||||
}
|
||||
|
||||
memcpy(&dc[0], c1, 612);
|
||||
memcpy(&dc[612], c2, 612);
|
||||
|
||||
/* Data */
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (k % 4) + 3 * (44 * k % 102 + k / 4 % 2) +
|
||||
(k + 2 - k / 408) % 3;
|
||||
di[j] = dc[k];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void gsm0503_mcs7_dl_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
|
||||
const sbit_t *hi, const sbit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
if (hc) {
|
||||
for (k = 0; k < 124; k++) {
|
||||
j = 31 * (k % 4) + ((17 * k) % 31);
|
||||
hc[k] = hi[j];
|
||||
}
|
||||
}
|
||||
|
||||
/* Data */
|
||||
if (c1 && c2) {
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (k % 4) + 3 * (44 * k % 102 + k / 4 % 2) +
|
||||
(k + 2 - k / 408) % 3;
|
||||
dc[k] = di[j];
|
||||
}
|
||||
|
||||
memcpy(c1, &dc[0], 612);
|
||||
memcpy(c2, &dc[612], 612);
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs7_ul_interleave(const ubit_t *hc, const ubit_t *c1,
|
||||
const ubit_t *c2, ubit_t *hi, ubit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
for (k = 0; k < 160; k++) {
|
||||
j = 40 * (k % 4) + 2 * (13 * (k / 8) % 20) + k % 8 / 4;
|
||||
hi[j] = hc[k];
|
||||
}
|
||||
|
||||
memcpy(&dc[0], c1, 612);
|
||||
memcpy(&dc[612], c2, 612);
|
||||
|
||||
/* Data */
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (k % 4) + 3 * (44 * k % 102 + k / 4 % 2) +
|
||||
(k + 2 - k / 408) % 3;
|
||||
di[j] = dc[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs7_ul_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
|
||||
const sbit_t *hi, const sbit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
if (hc) {
|
||||
for (k = 0; k < 160; k++) {
|
||||
j = 40 * (k % 4) + 2 * (13 * (k / 8) % 20) + k % 8 / 4;
|
||||
hc[k] = hi[j];
|
||||
}
|
||||
}
|
||||
|
||||
/* Data */
|
||||
if (c1 && c2) {
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (k % 4) + 3 * (44 * k % 102 + k / 4 % 2) +
|
||||
(k + 2 - k / 408) % 3;
|
||||
dc[k] = di[j];
|
||||
}
|
||||
|
||||
memcpy(c1, &dc[0], 612);
|
||||
memcpy(c2, &dc[612], 612);
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs8_ul_interleave(const ubit_t *hc, const ubit_t *c1,
|
||||
const ubit_t *c2, ubit_t *hi, ubit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
for (k = 0; k < 160; k++) {
|
||||
j = 40 * (k % 4) + 2 * (13 * (k / 8) % 20) + k % 8 / 4;
|
||||
hi[j] = hc[k];
|
||||
}
|
||||
|
||||
memcpy(&dc[0], c1, 612);
|
||||
memcpy(&dc[612], c2, 612);
|
||||
|
||||
/* Data */
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (2 * (k / 612) + (k % 2)) +
|
||||
3 * (74 * k % 102 + k / 2 % 2) + (k + 2 - k / 204) % 3;
|
||||
di[j] = dc[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs8_ul_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
|
||||
const sbit_t *hi, const sbit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
if (hc) {
|
||||
for (k = 0; k < 160; k++) {
|
||||
j = 40 * (k % 4) + 2 * (13 * (k / 8) % 20) + k % 8 / 4;
|
||||
hc[k] = hi[j];
|
||||
}
|
||||
}
|
||||
|
||||
/* Data */
|
||||
if (c1 && c2) {
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (2 * (k / 612) + (k % 2)) +
|
||||
3 * (74 * k % 102 + k / 2 % 2) + (k + 2 - k / 204) % 3;
|
||||
dc[k] = di[j];
|
||||
}
|
||||
|
||||
memcpy(c1, &dc[0], 612);
|
||||
memcpy(c2, &dc[612], 612);
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs8_dl_interleave(const ubit_t *hc, const ubit_t *c1,
|
||||
const ubit_t *c2, ubit_t *hi, ubit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
for (k = 0; k < 124; k++) {
|
||||
j = 31 * (k % 4) + ((17 * k) % 31);
|
||||
hi[j] = hc[k];
|
||||
}
|
||||
|
||||
memcpy(&dc[0], c1, 612);
|
||||
memcpy(&dc[612], c2, 612);
|
||||
|
||||
/* Data */
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (2 * (k / 612) + (k % 2)) +
|
||||
3 * (74 * k % 102 + k / 2 % 2) + (k + 2 - k / 204) % 3;
|
||||
di[j] = dc[k];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs8_dl_deinterleave(sbit_t *hc, sbit_t *c1, sbit_t *c2,
|
||||
const sbit_t *hi, const sbit_t *di)
|
||||
{
|
||||
int j, k;
|
||||
ubit_t dc[1224];
|
||||
|
||||
/* Header */
|
||||
if (hc) {
|
||||
for (k = 0; k < 124; k++) {
|
||||
j = 31 * (k % 4) + ((17 * k) % 31);
|
||||
hc[k] = hi[j];
|
||||
}
|
||||
}
|
||||
|
||||
/* Data */
|
||||
if (c1 && c2) {
|
||||
for (k = 0; k < 1224; k++) {
|
||||
j = 306 * (2 * (k / 612) + (k % 2)) +
|
||||
3 * (74 * k % 102 + k / 2 % 2) + (k + 2 - k / 204) % 3;
|
||||
dc[k] = di[j];
|
||||
}
|
||||
|
||||
memcpy(c1, &dc[0], 612);
|
||||
memcpy(c2, &dc[612], 612);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* GSM TCH FR/EFR/AFS interleaving and burst mapping
|
||||
*
|
||||
* Interleaving:
|
||||
*
|
||||
* Given 456 coded input bits, form 8 blocks of 114 bits,
|
||||
* where even bits of the first 4 blocks and odd bits of the last 4 blocks
|
||||
* are used:
|
||||
*
|
||||
* i(B, j) = c(n, k) k = 0, ..., 455
|
||||
* n = 0, ..., N, N + 1, ...
|
||||
* B = B_0 + 4n + (k mod 8)
|
||||
* j = 2(49k mod 57) + ((k mod 8) div 4)
|
||||
*
|
||||
* Mapping on Burst:
|
||||
*
|
||||
* e(B, j) = i(B, j)
|
||||
* e(B, 59 + j) = i(B, 57 + j) j = 0, ..., 56
|
||||
* e(B, 57) = h_l(B)
|
||||
* e(B, 58) = h_n(B)
|
||||
*
|
||||
* Where hl(B) and hn(B) are bits in burst B indicating flags.
|
||||
*/
|
||||
|
||||
void gsm0503_tch_fr_deinterleave(sbit_t *cB, sbit_t *iB)
|
||||
{
|
||||
int j, k, B;
|
||||
|
||||
for (k = 0; k < 456; k++) {
|
||||
B = k & 7;
|
||||
j = 2 * ((49 * k) % 57) + ((k & 7) >> 2);
|
||||
cB[k] = iB[B * 114 + j];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_tch_fr_interleave(ubit_t *cB, ubit_t *iB)
|
||||
{
|
||||
int j, k, B;
|
||||
|
||||
for (k = 0; k < 456; k++) {
|
||||
B = k & 7;
|
||||
j = 2 * ((49 * k) % 57) + ((k & 7) >> 2);
|
||||
iB[B * 114 + j] = cB[k];
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* GSM TCH HR/AHS interleaving and burst mapping
|
||||
*
|
||||
* Interleaving:
|
||||
*
|
||||
* Given 288 coded input bits, form 4 blocks of 114 bits,
|
||||
* where even bits of the first 2 blocks and odd bits of the last 2 blocks
|
||||
* are used:
|
||||
*
|
||||
* i(B, j) = c(n, k) k = 0, ..., 227
|
||||
* n = 0, ..., N, N + 1, ...
|
||||
* B = B_0 + 2n + b
|
||||
* j, b = table[k];
|
||||
*
|
||||
* Mapping on Burst:
|
||||
*
|
||||
* e(B, j) = i(B, j)
|
||||
* e(B, 59 + j) = i(B, 57 + j) j = 0, ..., 56
|
||||
* e(B, 57) = h_l(B)
|
||||
* e(B, 58) = h_n(B)
|
||||
*
|
||||
* Where hl(B) and hn(B) are bits in burst B indicating flags.
|
||||
*/
|
||||
|
||||
void gsm0503_tch_hr_deinterleave(sbit_t *cB, sbit_t *iB)
|
||||
{
|
||||
int j, k, B;
|
||||
|
||||
for (k = 0; k < 228; k++) {
|
||||
B = gsm0503_tch_hr_interleaving[k][1];
|
||||
j = gsm0503_tch_hr_interleaving[k][0];
|
||||
cB[k] = iB[B * 114 + j];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_tch_hr_interleave(ubit_t *cB, ubit_t *iB)
|
||||
{
|
||||
int j, k, B;
|
||||
|
||||
for (k = 0; k < 228; k++) {
|
||||
B = gsm0503_tch_hr_interleaving[k][1];
|
||||
j = gsm0503_tch_hr_interleaving[k][0];
|
||||
iB[B * 114 + j] = cB[k];
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,291 @@
|
|||
/*
|
||||
* (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
|
||||
* (C) 2016 by Tom Tsou <tom.tsou@ettus.com>
|
||||
*
|
||||
* All Rights Reserved
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <osmocom/core/bits.h>
|
||||
#include <osmocom/coding/gsm0503_mapping.h>
|
||||
|
||||
void gsm0503_xcch_burst_unmap(sbit_t *iB, const sbit_t *eB,
|
||||
sbit_t *hl, sbit_t *hn)
|
||||
{
|
||||
memcpy(iB, eB, 57);
|
||||
memcpy(iB + 57, eB + 59, 57);
|
||||
|
||||
if (hl)
|
||||
*hl = eB[57];
|
||||
|
||||
if (hn)
|
||||
*hn = eB[58];
|
||||
}
|
||||
|
||||
void gsm0503_xcch_burst_map(ubit_t *iB, ubit_t *eB, const ubit_t *hl,
|
||||
const ubit_t *hn)
|
||||
{
|
||||
memcpy(eB, iB, 57);
|
||||
memcpy(eB + 59, iB + 57, 57);
|
||||
|
||||
if (hl)
|
||||
eB[57] = *hl;
|
||||
if (hn)
|
||||
eB[58] = *hn;
|
||||
}
|
||||
|
||||
void gsm0503_tch_burst_unmap(sbit_t *iB, sbit_t *eB, sbit_t *h, int odd)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* brainfuck: only copy even or odd bits */
|
||||
if (iB) {
|
||||
for (i = odd; i < 57; i += 2)
|
||||
iB[i] = eB[i];
|
||||
for (i = 58 - odd; i < 114; i += 2)
|
||||
iB[i] = eB[i + 2];
|
||||
}
|
||||
|
||||
if (h) {
|
||||
if (!odd)
|
||||
*h = eB[58];
|
||||
else
|
||||
*h = eB[57];
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_tch_burst_map(ubit_t *iB, ubit_t *eB, const ubit_t *h, int odd)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* brainfuck: only copy even or odd bits */
|
||||
if (eB) {
|
||||
for (i = odd; i < 57; i += 2)
|
||||
eB[i] = iB[i];
|
||||
for (i = 58 - odd; i < 114; i += 2)
|
||||
eB[i + 2] = iB[i];
|
||||
}
|
||||
|
||||
if (h) {
|
||||
if (!odd)
|
||||
eB[58] = *h;
|
||||
else
|
||||
eB[57] = *h;
|
||||
}
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_dl_burst_map(const ubit_t *di, ubit_t *eB,
|
||||
const ubit_t *hi, const ubit_t *up, int B)
|
||||
{
|
||||
int j;
|
||||
int q[8] = { 0, 0, 0, 0, 0, 0, 0, 0, };
|
||||
|
||||
for (j = 0; j < 156; j++)
|
||||
eB[j] = di[312 * B + j];
|
||||
for (j = 156; j < 168; j++)
|
||||
eB[j] = hi[25 * B + j - 156];
|
||||
for (j = 168; j < 174; j++)
|
||||
eB[j] = up[9 * B + j - 168];
|
||||
for (j = 174; j < 176; j++)
|
||||
eB[j] = q[2 * B + j - 174];
|
||||
for (j = 176; j < 179; j++)
|
||||
eB[j] = up[9 * B + j - 170];
|
||||
for (j = 179; j < 192; j++)
|
||||
eB[j] = hi[25 * B + j - 167];
|
||||
for (j = 192; j < 348; j++)
|
||||
eB[j] = di[312 * B + j - 36];
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_dl_burst_unmap(sbit_t *di, const sbit_t *eB,
|
||||
sbit_t *hi, sbit_t *up, int B)
|
||||
{
|
||||
int j;
|
||||
|
||||
for (j = 0; j < 156; j++)
|
||||
di[312 * B + j] = eB[j];
|
||||
for (j = 156; j < 168; j++)
|
||||
hi[25 * B + j - 156] = eB[j];
|
||||
for (j = 168; j < 174; j++)
|
||||
up[9 * B + j - 168] = eB[j];
|
||||
|
||||
for (j = 176; j < 179; j++)
|
||||
up[9 * B + j - 170] = eB[j];
|
||||
for (j = 179; j < 192; j++)
|
||||
hi[25 * B + j - 167] = eB[j];
|
||||
for (j = 192; j < 348; j++)
|
||||
di[312 * B + j - 36] = eB[j];
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_ul_burst_map(const ubit_t *di, ubit_t *eB,
|
||||
const ubit_t *hi, int B)
|
||||
{
|
||||
int j;
|
||||
|
||||
for (j = 0; j < 156; j++)
|
||||
eB[j] = di[312 * B + j];
|
||||
for (j = 156; j < 174; j++)
|
||||
eB[j] = hi[34 * B + j - 156];
|
||||
for (j = 174; j < 176; j++)
|
||||
eB[j] = 0;
|
||||
for (j = 176; j < 192; j++)
|
||||
eB[j] = hi[34 * B + j - 158];
|
||||
for (j = 192; j < 348; j++)
|
||||
eB[j] = di[312 * B + j - 36];
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_ul_burst_unmap(sbit_t *di, const sbit_t *eB,
|
||||
sbit_t *hi, int B)
|
||||
{
|
||||
int j;
|
||||
|
||||
for (j = 0; j < 156; j++)
|
||||
di[312 * B + j] = eB[j];
|
||||
for (j = 156; j < 174; j++)
|
||||
hi[34 * B + j - 156] = eB[j];
|
||||
for (j = 176; j < 192; j++)
|
||||
hi[34 * B + j - 158] = eB[j];
|
||||
for (j = 192; j < 348; j++)
|
||||
di[312 * B + j - 36] = eB[j];
|
||||
}
|
||||
|
||||
void gsm0503_mcs7_dl_burst_map(const ubit_t *di, ubit_t *eB,
|
||||
const ubit_t *hi, const ubit_t *up, int B)
|
||||
{
|
||||
int j;
|
||||
int q[8] = { 1, 1, 1, 0, 0, 1, 1, 1, };
|
||||
|
||||
for (j = 0; j < 153; j++)
|
||||
eB[j] = di[306 * B + j];
|
||||
for (j = 153; j < 168; j++)
|
||||
eB[j] = hi[31 * B + j - 153];
|
||||
for (j = 168; j < 174; j++)
|
||||
eB[j] = up[9 * B + j - 168];
|
||||
for (j = 174; j < 176; j++)
|
||||
eB[j] = q[2 * B + j - 174];
|
||||
for (j = 176; j < 179; j++)
|
||||
eB[j] = up[9 * B + j - 170];
|
||||
for (j = 179; j < 195; j++)
|
||||
eB[j] = hi[31 * B + j - 164];
|
||||
for (j = 195; j < 348; j++)
|
||||
eB[j] = di[306 * B + j - 42];
|
||||
}
|
||||
|
||||
void gsm0503_mcs7_dl_burst_unmap(sbit_t *di, const sbit_t *eB,
|
||||
sbit_t *hi, sbit_t *up, int B)
|
||||
{
|
||||
int j;
|
||||
|
||||
for (j = 0; j < 153; j++)
|
||||
di[306 * B + j] = eB[j];
|
||||
for (j = 153; j < 168; j++)
|
||||
hi[31 * B + j - 153] = eB[j];
|
||||
for (j = 168; j < 174; j++)
|
||||
up[9 * B + j - 168] = eB[j];
|
||||
|
||||
for (j = 176; j < 179; j++)
|
||||
up[9 * B + j - 170] = eB[j];
|
||||
for (j = 179; j < 195; j++)
|
||||
hi[31 * B + j - 164] = eB[j];
|
||||
for (j = 195; j < 348; j++)
|
||||
di[306 * B + j - 42] = eB[j];
|
||||
}
|
||||
|
||||
void gsm0503_mcs7_ul_burst_map(const ubit_t *di, ubit_t *eB,
|
||||
const ubit_t *hi, int B)
|
||||
{
|
||||
int j;
|
||||
int q[8] = { 1, 1, 1, 0, 0, 1, 1, 1, };
|
||||
|
||||
for (j = 0; j < 153; j++)
|
||||
eB[j] = di[306 * B + j];
|
||||
for (j = 153; j < 174; j++)
|
||||
eB[j] = hi[40 * B + j - 153];
|
||||
for (j = 174; j < 176; j++)
|
||||
eB[j] = q[2 * B + j - 174];
|
||||
for (j = 176; j < 195; j++)
|
||||
eB[j] = hi[40 * B + j - 155];
|
||||
for (j = 195; j < 348; j++)
|
||||
eB[j] = di[306 * B + j - 42];
|
||||
}
|
||||
|
||||
void gsm0503_mcs7_ul_burst_unmap(sbit_t *di, const sbit_t *eB,
|
||||
sbit_t *hi, int B)
|
||||
{
|
||||
int j;
|
||||
|
||||
for (j = 0; j < 153; j++)
|
||||
di[306 * B + j] = eB[j];
|
||||
for (j = 153; j < 174; j++)
|
||||
hi[40 * B + j - 153] = eB[j];
|
||||
|
||||
for (j = 176; j < 195; j++)
|
||||
hi[40 * B + j - 155] = eB[j];
|
||||
for (j = 195; j < 348; j++)
|
||||
di[306 * B + j - 42] = eB[j];
|
||||
}
|
||||
|
||||
void gsm0503_mcs5_burst_swap(sbit_t *eB)
|
||||
{
|
||||
sbit_t t[14];
|
||||
|
||||
t[0] = eB[155];
|
||||
t[1] = eB[158];
|
||||
t[2] = eB[161];
|
||||
t[3] = eB[164];
|
||||
t[4] = eB[167];
|
||||
t[5] = eB[170];
|
||||
t[6] = eB[173];
|
||||
t[7] = eB[195];
|
||||
t[8] = eB[196];
|
||||
t[9] = eB[198];
|
||||
t[10] = eB[199];
|
||||
t[11] = eB[201];
|
||||
t[12] = eB[202];
|
||||
t[13] = eB[204];
|
||||
|
||||
eB[155] = eB[142];
|
||||
eB[158] = eB[144];
|
||||
eB[161] = eB[145];
|
||||
eB[164] = eB[147];
|
||||
eB[167] = eB[148];
|
||||
eB[170] = eB[150];
|
||||
eB[173] = eB[151];
|
||||
eB[195] = eB[176];
|
||||
eB[196] = eB[179];
|
||||
eB[198] = eB[182];
|
||||
eB[199] = eB[185];
|
||||
eB[201] = eB[188];
|
||||
eB[202] = eB[191];
|
||||
eB[204] = eB[194];
|
||||
|
||||
eB[142] = t[0];
|
||||
eB[144] = t[1];
|
||||
eB[145] = t[2];
|
||||
eB[147] = t[3];
|
||||
eB[148] = t[4];
|
||||
eB[150] = t[5];
|
||||
eB[151] = t[6];
|
||||
eB[176] = t[7];
|
||||
eB[179] = t[8];
|
||||
eB[182] = t[9];
|
||||
eB[185] = t[10];
|
||||
eB[188] = t[11];
|
||||
eB[191] = t[12];
|
||||
eB[194] = t[13];
|
||||
}
|
||||
|
|
@ -0,0 +1,132 @@
|
|||
/*
|
||||
* (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
|
||||
* (C) 2016 by Tom Tsou <tom.tsou@ettus.com>
|
||||
*
|
||||
* All Rights Reserved
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#include <osmocom/core/crcgen.h>
|
||||
#include <osmocom/coding/gsm0503_parity.h>
|
||||
|
||||
/*
|
||||
* GSM (SACCH) parity (FIRE code)
|
||||
*
|
||||
* g(x) = (x^23 + 1)(x^17 + x^3 + 1)
|
||||
* = x^40 + x^26 + x^23 + x^17 + x^3 + a1
|
||||
*/
|
||||
const struct osmo_crc64gen_code gsm0503_fire_crc40 = {
|
||||
.bits = 40,
|
||||
.poly = 0x0004820009ULL,
|
||||
.init = 0x0000000000ULL,
|
||||
.remainder = 0xffffffffffULL,
|
||||
};
|
||||
|
||||
/*
|
||||
* GSM PDTCH CS-2, CS-3, CS-4 parity
|
||||
*
|
||||
* g(x) = x^16 + x^12 + x^5 + 1
|
||||
*/
|
||||
const struct osmo_crc16gen_code gsm0503_cs234_crc16 = {
|
||||
.bits = 16,
|
||||
.poly = 0x1021,
|
||||
.init = 0x0000,
|
||||
.remainder = 0xffff,
|
||||
};
|
||||
|
||||
/*
|
||||
* EDGE MCS header parity
|
||||
*
|
||||
*/
|
||||
const struct osmo_crc8gen_code gsm0503_mcs_crc8_hdr = {
|
||||
.bits = 8,
|
||||
.poly = 0x49,
|
||||
.init = 0x00,
|
||||
.remainder = 0xff,
|
||||
};
|
||||
|
||||
/*
|
||||
* EDGE MCS data parity
|
||||
*
|
||||
*/
|
||||
const struct osmo_crc16gen_code gsm0503_mcs_crc12 = {
|
||||
.bits = 12,
|
||||
.poly = 0x0d31,
|
||||
.init = 0x0000,
|
||||
.remainder = 0x0fff,
|
||||
};
|
||||
|
||||
/*
|
||||
* GSM RACH parity
|
||||
*
|
||||
* g(x) = x^6 + x^5 + x^3 + x^2 + x^1 + 1
|
||||
*/
|
||||
const struct osmo_crc8gen_code gsm0503_rach_crc6 = {
|
||||
.bits = 6,
|
||||
.poly = 0x2f,
|
||||
.init = 0x00,
|
||||
.remainder = 0x3f,
|
||||
};
|
||||
|
||||
/*
|
||||
* GSM SCH parity
|
||||
*
|
||||
* g(x) = x^10 + x^8 + x^6 + x^5 + x^4 + x^2 + 1
|
||||
*/
|
||||