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: I0c3256b87686d878e4e716d12393cad5924fdfa1

1 files changed, 27 insertions, 0 deletions

diff --git a/src/coding/Makefile.am b/src/coding/Makefile.am
new file mode 100644
index 00000000..5a055c8d
--- /dev/null
+++ b/src/coding/Makefile.am
@@ -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