+++ /dev/null
-Fri Mar 16 17:13:05 EDT 2007
+++ /dev/null
-Installation Instructions
-*************************
-
-Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005 Free
-Software Foundation, Inc.
-
-This file is free documentation; the Free Software Foundation gives
-unlimited permission to copy, distribute and modify it.
-
-Basic Installation
-==================
-
-These are generic installation instructions.
-
- The `configure' shell script attempts to guess correct values for
-various system-dependent variables used during compilation. It uses
-those values to create a `Makefile' in each directory of the package.
-It may also create one or more `.h' files containing system-dependent
-definitions. Finally, it creates a shell script `config.status' that
-you can run in the future to recreate the current configuration, and a
-file `config.log' containing compiler output (useful mainly for
-debugging `configure').
-
- It can also use an optional file (typically called `config.cache'
-and enabled with `--cache-file=config.cache' or simply `-C') that saves
-the results of its tests to speed up reconfiguring. (Caching is
-disabled by default to prevent problems with accidental use of stale
-cache files.)
-
- If you need to do unusual things to compile the package, please try
-to figure out how `configure' could check whether to do them, and mail
-diffs or instructions to the address given in the `README' so they can
-be considered for the next release. If you are using the cache, and at
-some point `config.cache' contains results you don't want to keep, you
-may remove or edit it.
-
- The file `configure.ac' (or `configure.in') is used to create
-`configure' by a program called `autoconf'. You only need
-`configure.ac' if you want to change it or regenerate `configure' using
-a newer version of `autoconf'.
-
-The simplest way to compile this package is:
-
- 1. `cd' to the directory containing the package's source code and type
- `./configure' to configure the package for your system. If you're
- using `csh' on an old version of System V, you might need to type
- `sh ./configure' instead to prevent `csh' from trying to execute
- `configure' itself.
-
- Running `configure' takes awhile. While running, it prints some
- messages telling which features it is checking for.
-
- 2. Type `make' to compile the package.
-
- 3. Optionally, type `make check' to run any self-tests that come with
- the package.
-
- 4. Type `make install' to install the programs and any data files and
- documentation.
-
- 5. You can remove the program binaries and object files from the
- source code directory by typing `make clean'. To also remove the
- files that `configure' created (so you can compile the package for
- a different kind of computer), type `make distclean'. There is
- also a `make maintainer-clean' target, but that is intended mainly
- for the package's developers. If you use it, you may have to get
- all sorts of other programs in order to regenerate files that came
- with the distribution.
-
-Compilers and Options
-=====================
-
-Some systems require unusual options for compilation or linking that the
-`configure' script does not know about. Run `./configure --help' for
-details on some of the pertinent environment variables.
-
- You can give `configure' initial values for configuration parameters
-by setting variables in the command line or in the environment. Here
-is an example:
-
- ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
-
- *Note Defining Variables::, for more details.
-
-Compiling For Multiple Architectures
-====================================
-
-You can compile the package for more than one kind of computer at the
-same time, by placing the object files for each architecture in their
-own directory. To do this, you must use a version of `make' that
-supports the `VPATH' variable, such as GNU `make'. `cd' to the
-directory where you want the object files and executables to go and run
-the `configure' script. `configure' automatically checks for the
-source code in the directory that `configure' is in and in `..'.
-
- If you have to use a `make' that does not support the `VPATH'
-variable, you have to compile the package for one architecture at a
-time in the source code directory. After you have installed the
-package for one architecture, use `make distclean' before reconfiguring
-for another architecture.
-
-Installation Names
-==================
-
-By default, `make install' installs the package's commands under
-`/usr/local/bin', include files under `/usr/local/include', etc. You
-can specify an installation prefix other than `/usr/local' by giving
-`configure' the option `--prefix=PREFIX'.
-
- You can specify separate installation prefixes for
-architecture-specific files and architecture-independent files. If you
-pass the option `--exec-prefix=PREFIX' to `configure', the package uses
-PREFIX as the prefix for installing programs and libraries.
-Documentation and other data files still use the regular prefix.
-
- In addition, if you use an unusual directory layout you can give
-options like `--bindir=DIR' to specify different values for particular
-kinds of files. Run `configure --help' for a list of the directories
-you can set and what kinds of files go in them.
-
- If the package supports it, you can cause programs to be installed
-with an extra prefix or suffix on their names by giving `configure' the
-option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
-
-Optional Features
-=================
-
-Some packages pay attention to `--enable-FEATURE' options to
-`configure', where FEATURE indicates an optional part of the package.
-They may also pay attention to `--with-PACKAGE' options, where PACKAGE
-is something like `gnu-as' or `x' (for the X Window System). The
-`README' should mention any `--enable-' and `--with-' options that the
-package recognizes.
-
- For packages that use the X Window System, `configure' can usually
-find the X include and library files automatically, but if it doesn't,
-you can use the `configure' options `--x-includes=DIR' and
-`--x-libraries=DIR' to specify their locations.
-
-Specifying the System Type
-==========================
-
-There may be some features `configure' cannot figure out automatically,
-but needs to determine by the type of machine the package will run on.
-Usually, assuming the package is built to be run on the _same_
-architectures, `configure' can figure that out, but if it prints a
-message saying it cannot guess the machine type, give it the
-`--build=TYPE' option. TYPE can either be a short name for the system
-type, such as `sun4', or a canonical name which has the form:
-
- CPU-COMPANY-SYSTEM
-
-where SYSTEM can have one of these forms:
-
- OS KERNEL-OS
-
- See the file `config.sub' for the possible values of each field. If
-`config.sub' isn't included in this package, then this package doesn't
-need to know the machine type.
-
- If you are _building_ compiler tools for cross-compiling, you should
-use the option `--target=TYPE' to select the type of system they will
-produce code for.
-
- If you want to _use_ a cross compiler, that generates code for a
-platform different from the build platform, you should specify the
-"host" platform (i.e., that on which the generated programs will
-eventually be run) with `--host=TYPE'.
-
-Sharing Defaults
-================
-
-If you want to set default values for `configure' scripts to share, you
-can create a site shell script called `config.site' that gives default
-values for variables like `CC', `cache_file', and `prefix'.
-`configure' looks for `PREFIX/share/config.site' if it exists, then
-`PREFIX/etc/config.site' if it exists. Or, you can set the
-`CONFIG_SITE' environment variable to the location of the site script.
-A warning: not all `configure' scripts look for a site script.
-
-Defining Variables
-==================
-
-Variables not defined in a site shell script can be set in the
-environment passed to `configure'. However, some packages may run
-configure again during the build, and the customized values of these
-variables may be lost. In order to avoid this problem, you should set
-them in the `configure' command line, using `VAR=value'. For example:
-
- ./configure CC=/usr/local2/bin/gcc
-
-causes the specified `gcc' to be used as the C compiler (unless it is
-overridden in the site shell script). Here is a another example:
-
- /bin/bash ./configure CONFIG_SHELL=/bin/bash
-
-Here the `CONFIG_SHELL=/bin/bash' operand causes subsequent
-configuration-related scripts to be executed by `/bin/bash'.
-
-`configure' Invocation
-======================
-
-`configure' recognizes the following options to control how it operates.
-
-`--help'
-`-h'
- Print a summary of the options to `configure', and exit.
-
-`--version'
-`-V'
- Print the version of Autoconf used to generate the `configure'
- script, and exit.
-
-`--cache-file=FILE'
- Enable the cache: use and save the results of the tests in FILE,
- traditionally `config.cache'. FILE defaults to `/dev/null' to
- disable caching.
-
-`--config-cache'
-`-C'
- Alias for `--cache-file=config.cache'.
-
-`--quiet'
-`--silent'
-`-q'
- Do not print messages saying which checks are being made. To
- suppress all normal output, redirect it to `/dev/null' (any error
- messages will still be shown).
-
-`--srcdir=DIR'
- Look for the package's source code in directory DIR. Usually
- `configure' can determine that directory automatically.
-
-`configure' also accepts some other, not widely useful, options. Run
-`configure --help' for more details.
-
+++ /dev/null
-EXTRA_DIST =
-SUBDIRS =
-AUTOMAKE_OPTS= gnu
-NAME=libg726
-
-AM_CFLAGS = $(new_AM_CFLAGS) -I./src/include
-AM_CPPFLAGS = $(AM_CFLAGS)
-AM_LDFLAGS = $(new_AM_LDFLAGS) -lm
-
-lib_LTLIBRARIES = libg726.la
-libg726_la_SOURCES = src/g726_16.c \
-src/g726_24.c \
-src/g726_32.c \
-src/g726_40.c \
-src/g72x.c \
-src/g711.c
-
-libg726_la_CFLAGS = $(AM_CFLAGS)
-libg726_la_LDFLAGS =
-
-library_includedir = $(prefix)/include
-library_include_HEADERS = src/g72x.h src/private.h src/g711.h
-
-
-
-
-
-
+++ /dev/null
-m4_include([build/config/ax_compiler_vendor.m4])
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-m4_include([build/config/ax_check_compiler_flags.m4])
-m4_include([build/config/ac_gcc_archflag.m4])
-m4_include([build/config/ac_gcc_x86_cpuid.m4])
+++ /dev/null
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-
+++ /dev/null
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+++ /dev/null
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-
-AC_ARG_WITH(gcc-arch, [AC_HELP_STRING([--with-gcc-arch=<arch>], [use architecture <arch> for gcc -march/-mtune, instead of guessing])],
- ax_gcc_arch=$withval, ax_gcc_arch=yes)
-
-AC_MSG_CHECKING([for gcc architecture flag])
-AC_MSG_RESULT([])
-AC_CACHE_VAL(ax_cv_gcc_archflag,
-[
-ax_cv_gcc_archflag="unknown"
-
-if test "$GCC" = yes; then
-
-if test "x$ax_gcc_arch" = xyes; then
-ax_gcc_arch=""
-if test "$cross_compiling" = no; then
-case $host_cpu in
- i[[3456]]86*|x86_64*) # use cpuid codes, in part from x86info-1.7 by D. Jones
- AX_GCC_X86_CPUID(0)
- AX_GCC_X86_CPUID(1)
- case $ax_cv_gcc_x86_cpuid_0 in
- *:756e6547:*:*) # Intel
- case $ax_cv_gcc_x86_cpuid_1 in
- *5[[48]]?:*:*:*) ax_gcc_arch="pentium-mmx pentium" ;;
- *5??:*:*:*) ax_gcc_arch=pentium ;;
- *6[[3456]]?:*:*:*) ax_gcc_arch="pentium2 pentiumpro" ;;
- *6a?:*[[01]]:*:*) ax_gcc_arch="pentium2 pentiumpro" ;;
- *6a?:*[[234]]:*:*) ax_gcc_arch="pentium3 pentiumpro" ;;
- *6[[9d]]?:*:*:*) ax_gcc_arch="pentium-m pentium3 pentiumpro" ;;
- *6[[78b]]?:*:*:*) ax_gcc_arch="pentium3 pentiumpro" ;;
- *6??:*:*:*) ax_gcc_arch=pentiumpro ;;
- *f3[[347]]:*:*:*|*f4[1347]:*:*:*)
- case $host_cpu in
- x86_64*) ax_gcc_arch="nocona pentium4 pentiumpro" ;;
- *) ax_gcc_arch="prescott pentium4 pentiumpro" ;;
- esac ;;
- *f??:*:*:*) ax_gcc_arch="pentium4 pentiumpro";;
- esac ;;
- *:68747541:*:*) # AMD
- case $ax_cv_gcc_x86_cpuid_1 in
- *5[[67]]?:*:*:*) ax_gcc_arch=k6 ;;
- *5[[8d]]?:*:*:*) ax_gcc_arch="k6-2 k6" ;;
- *5[[9]]?:*:*:*) ax_gcc_arch="k6-3 k6" ;;
- *60?:*:*:*) ax_gcc_arch=k7 ;;
- *6[[12]]?:*:*:*) ax_gcc_arch="athlon k7" ;;
- *6[[34]]?:*:*:*) ax_gcc_arch="athlon-tbird k7" ;;
- *67?:*:*:*) ax_gcc_arch="athlon-4 athlon k7" ;;
- *6[[68a]]?:*:*:*)
- AX_GCC_X86_CPUID(0x80000006) # L2 cache size
- case $ax_cv_gcc_x86_cpuid_0x80000006 in
- *:*:*[[1-9a-f]]??????:*) # (L2 = ecx >> 16) >= 256
- ax_gcc_arch="athlon-xp athlon-4 athlon k7" ;;
- *) ax_gcc_arch="athlon-4 athlon k7" ;;
- esac ;;
- *f[[4cef8b]]?:*:*:*) ax_gcc_arch="athlon64 k8" ;;
- *f5?:*:*:*) ax_gcc_arch="opteron k8" ;;
- *f7?:*:*:*) ax_gcc_arch="athlon-fx opteron k8" ;;
- *f??:*:*:*) ax_gcc_arch="k8" ;;
- esac ;;
- *:746e6543:*:*) # IDT
- case $ax_cv_gcc_x86_cpuid_1 in
- *54?:*:*:*) ax_gcc_arch=winchip-c6 ;;
- *58?:*:*:*) ax_gcc_arch=winchip2 ;;
- *6[[78]]?:*:*:*) ax_gcc_arch=c3 ;;
- *69?:*:*:*) ax_gcc_arch="c3-2 c3" ;;
- esac ;;
- esac
- if test x"$ax_gcc_arch" = x; then # fallback
- case $host_cpu in
- i586*) ax_gcc_arch=pentium ;;
- i686*) ax_gcc_arch=pentiumpro ;;
- esac
- fi
- ;;
-
- sparc*)
- AC_PATH_PROG([PRTDIAG], [prtdiag], [prtdiag], [$PATH:/usr/platform/`uname -i`/sbin/:/usr/platform/`uname -m`/sbin/])
- cputype=`(((grep cpu /proc/cpuinfo | cut -d: -f2) ; ($PRTDIAG -v |grep -i sparc) ; grep -i cpu /var/run/dmesg.boot ) | head -n 1) 2> /dev/null`
- cputype=`echo "$cputype" | tr -d ' -' |tr $as_cr_LETTERS $as_cr_letters`
- case $cputype in
- *ultrasparciv*) ax_gcc_arch="ultrasparc4 ultrasparc3 ultrasparc v9" ;;
- *ultrasparciii*) ax_gcc_arch="ultrasparc3 ultrasparc v9" ;;
- *ultrasparc*) ax_gcc_arch="ultrasparc v9" ;;
- *supersparc*|*tms390z5[[05]]*) ax_gcc_arch="supersparc v8" ;;
- *hypersparc*|*rt62[[056]]*) ax_gcc_arch="hypersparc v8" ;;
- *cypress*) ax_gcc_arch=cypress ;;
- esac ;;
-
- alphaev5) ax_gcc_arch=ev5 ;;
- alphaev56) ax_gcc_arch=ev56 ;;
- alphapca56) ax_gcc_arch="pca56 ev56" ;;
- alphapca57) ax_gcc_arch="pca57 pca56 ev56" ;;
- alphaev6) ax_gcc_arch=ev6 ;;
- alphaev67) ax_gcc_arch=ev67 ;;
- alphaev68) ax_gcc_arch="ev68 ev67" ;;
- alphaev69) ax_gcc_arch="ev69 ev68 ev67" ;;
- alphaev7) ax_gcc_arch="ev7 ev69 ev68 ev67" ;;
- alphaev79) ax_gcc_arch="ev79 ev7 ev69 ev68 ev67" ;;
-
- powerpc*)
- cputype=`((grep cpu /proc/cpuinfo | head -n 1 | cut -d: -f2 | cut -d, -f1 | sed 's/ //g') ; /usr/bin/machine ; /bin/machine; grep CPU /var/run/dmesg.boot | head -n 1 | cut -d" " -f2) 2> /dev/null`
- cputype=`echo $cputype | sed -e 's/ppc//g;s/ *//g'`
- case $cputype in
- *750*) ax_gcc_arch="750 G3" ;;
- *740[[0-9]]*) ax_gcc_arch="$cputype 7400 G4" ;;
- *74[[4-5]][[0-9]]*) ax_gcc_arch="$cputype 7450 G4" ;;
- *74[[0-9]][[0-9]]*) ax_gcc_arch="$cputype G4" ;;
- *970*) ax_gcc_arch="970 G5 power4";;
- *POWER4*|*power4*|*gq*) ax_gcc_arch="power4 970";;
- *POWER5*|*power5*|*gr*|*gs*) ax_gcc_arch="power5 power4 970";;
- 603ev|8240) ax_gcc_arch="$cputype 603e 603";;
- *) ax_gcc_arch=$cputype ;;
- esac
- ax_gcc_arch="$ax_gcc_arch powerpc"
- ;;
-esac
-fi # not cross-compiling
-fi # guess arch
-
-if test "x$ax_gcc_arch" != x -a "x$ax_gcc_arch" != xno; then
-for arch in $ax_gcc_arch; do
- if test "x[]m4_default([$1],yes)" = xyes; then # if we require portable code
- flags="-mtune=$arch"
- # -mcpu=$arch and m$arch generate nonportable code on every arch except
- # x86. And some other arches (e.g. Alpha) don't accept -mtune. Grrr.
- case $host_cpu in i*86|x86_64*) flags="$flags -mcpu=$arch -m$arch";; esac
- else
- flags="-march=$arch -mcpu=$arch -m$arch"
- fi
- for flag in $flags; do
- AX_CHECK_COMPILER_FLAGS($flag, [ax_cv_gcc_archflag=$flag; break])
- done
- test "x$ax_cv_gcc_archflag" = xunknown || break
-done
-fi
-
-fi # $GCC=yes
-])
-AC_MSG_CHECKING([for gcc architecture flag])
-AC_MSG_RESULT($ax_cv_gcc_archflag)
-if test "x$ax_cv_gcc_archflag" = xunknown; then
- m4_default([$3],:)
-else
- m4_default([$2], [CFLAGS="$CFLAGS $ax_cv_gcc_archflag"])
-fi
-])
-
+++ /dev/null
-AC_DEFUN([AX_GCC_X86_CPUID],
-[AC_REQUIRE([AC_PROG_CC])
-AC_LANG_PUSH([C])
-AC_CACHE_CHECK(for x86 cpuid $1 output, ax_cv_gcc_x86_cpuid_$1,
- [AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [
- int op = $1, eax, ebx, ecx, edx;
- FILE *f;
- __asm__("cpuid"
- : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
- : "a" (op));
- f = fopen("conftest_cpuid", "w"); if (!f) return 1;
- fprintf(f, "%x:%x:%x:%x\n", eax, ebx, ecx, edx);
- fclose(f);
- return 0;
-])],
- [ax_cv_gcc_x86_cpuid_$1=`cat conftest_cpuid`; rm -f conftest_cpuid],
- [ax_cv_gcc_x86_cpuid_$1=unknown; rm -f conftest_cpuid],
- [ax_cv_gcc_x86_cpuid_$1=unknown])])
-AC_LANG_POP([C])
-])
-
+++ /dev/null
-AC_DEFUN([AC_PROG_GZIP],[
-AC_CHECK_PROGS(gzip,[gzip],no)
-export gzip;
-if test $gzip = "no" ;
-then
- AC_MSG_ERROR([Unable to find the gzip application]);
-fi
-AC_SUBST(gzip)
-])
+++ /dev/null
-AC_DEFUN([AC_PROG_WGET],[
-AC_CHECK_PROGS(wget,[wget],no)
-export wget;
-if test $wget = "no" ;
-then
- AC_MSG_ERROR([Unable to find the wget application]);
-fi
-AC_SUBST(wget)
-])
+++ /dev/null
-AC_DEFUN([AX_CC_MAXOPT],
-[
-AC_REQUIRE([AC_PROG_CC])
-AC_REQUIRE([AX_COMPILER_VENDOR])
-
-AC_ARG_ENABLE(portable-binary, [AC_HELP_STRING([--enable-portable-binary], [disable compiler optimizations that would produce unportable binaries])],
- acx_maxopt_portable=$withval, acx_maxopt_portable=no)
-
-# Try to determine "good" native compiler flags if none specified via CFLAGS
-if test "$ac_test_CFLAGS" != "set"; then
- CFLAGS=""
- case $ax_cv_c_compiler_vendor in
- dec) CFLAGS="-newc -w0 -O5 -ansi_alias -ansi_args -fp_reorder -tune host"
- if test "x$acx_maxopt_portable" = xno; then
- CFLAGS="$CFLAGS -arch host"
- fi;;
-
- sun) CFLAGS="-native -fast -xO5 -dalign -xc99=all"
- if test "x$acx_maxopt_portable" = xyes; then
- CFLAGS="$CFLAGS -xarch=generic"
- fi;;
-
- hp) CFLAGS="+Oall +Optrs_ansi +DSnative"
- if test "x$acx_maxopt_portable" = xyes; then
- CFLAGS="$CFLAGS +DAportable"
- fi;;
-
- ibm) if test "x$acx_maxopt_portable" = xno; then
- xlc_opt="-qarch=auto -qtune=auto"
- else
- xlc_opt="-qtune=auto"
- fi
- AX_CHECK_COMPILER_FLAGS($xlc_opt,
- CFLAGS="-O3 -qansialias -w $xlc_opt",
- [CFLAGS="-O3 -qansialias -w"
- echo "******************************************************"
- echo "* You seem to have the IBM C compiler. It is *"
- echo "* recommended for best performance that you use: *"
- echo "* *"
- echo "* CFLAGS=-O3 -qarch=xxx -qtune=xxx -qansialias -w *"
- echo "* ^^^ ^^^ *"
- echo "* where xxx is pwr2, pwr3, 604, or whatever kind of *"
- echo "* CPU you have. (Set the CFLAGS environment var. *"
- echo "* and re-run configure.) For more info, man cc. *"
- echo "******************************************************"])
- ;;
-
- intel) CFLAGS="-O3 -ansi_alias"
- if test "x$acx_maxopt_portable" = xno; then
- icc_archflag=unknown
- icc_flags=""
- case $host_cpu in
- i686*|x86_64*)
- # icc accepts gcc assembly syntax, so these should work:
- AX_GCC_X86_CPUID(0)
- AX_GCC_X86_CPUID(1)
- case $ax_cv_gcc_x86_cpuid_0 in # see AX_GCC_ARCHFLAG
- *:756e6547:*:*) # Intel
- case $ax_cv_gcc_x86_cpuid_1 in
- *6a?:*[[234]]:*:*|*6[[789b]]?:*:*:*) icc_flags="-xK";;
- *f3[[347]]:*:*:*|*f4[1347]:*:*:*) icc_flags="-xP -xN -xW -xK";;
- *f??:*:*:*) icc_flags="-xN -xW -xK";;
- esac ;;
- esac ;;
- esac
- if test "x$icc_flags" != x; then
- for flag in $icc_flags; do
- AX_CHECK_COMPILER_FLAGS($flag, [icc_archflag=$flag; break])
- done
- fi
- AC_MSG_CHECKING([for icc architecture flag])
- AC_MSG_RESULT($icc_archflag)
- if test "x$icc_archflag" != xunknown; then
- CFLAGS="$CFLAGS $icc_archflag"
- fi
- fi
- ;;
-
- gnu)
- # default optimization flags for gcc on all systems
- CFLAGS="-O3 -fomit-frame-pointer"
-
- # -malign-double for x86 systems
- AX_CHECK_COMPILER_FLAGS(-malign-double, CFLAGS="$CFLAGS -malign-double")
-
- # -fstrict-aliasing for gcc-2.95+
- AX_CHECK_COMPILER_FLAGS(-fstrict-aliasing,
- CFLAGS="$CFLAGS -fstrict-aliasing")
-
- # note that we enable "unsafe" fp optimization with other compilers, too
- AX_CHECK_COMPILER_FLAGS(-ffast-math, CFLAGS="$CFLAGS -ffast-math")
-
- AX_GCC_ARCHFLAG($acx_maxopt_portable)
- ;;
- esac
-
- if test -z "$CFLAGS"; then
- echo ""
- echo "********************************************************"
- echo "* WARNING: Don't know the best CFLAGS for this system *"
- echo "* Use ./configure CFLAGS=... to specify your own flags *"
- echo "* (otherwise, a default of CFLAGS=-O3 will be used) *"
- echo "********************************************************"
- echo ""
- CFLAGS="-O3"
- fi
-
- AX_CHECK_COMPILER_FLAGS($CFLAGS, [], [
- echo ""
- echo "********************************************************"
- echo "* WARNING: The guessed CFLAGS don't seem to work with *"
- echo "* your compiler. *"
- echo "* Use ./configure CFLAGS=... to specify your own flags *"
- echo "********************************************************"
- echo ""
- CFLAGS=""
- ])
-
-fi
-])
+++ /dev/null
-AC_DEFUN([AX_CFLAGS_WARN_ALL_ANSI],[dnl
-AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_warn_all_ansi])dnl
-AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum ansi warnings],
-VAR,[VAR="no, unknown"
- AC_LANG_SAVE
- AC_LANG_C
- ac_save_[]FLAGS="$[]FLAGS"
-# IRIX C compiler:
-# -use_readonly_const is the default for IRIX C,
-# puts them into .rodata, but they are copied later.
-# need to be "-G0 -rdatashared" for strictmode but
-# I am not sure what effect that has really. - guidod
-for ac_arg dnl
-in "-pedantic % -Wall -std=c99 -pedantic" dnl GCC
- "-xstrconst % -v -xc99=all" dnl Solaris C
- "-std1 % -verbose -w0 -warnprotos -std1" dnl Digital Unix
- " % -qlanglvl=ansi -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX
- " % -ansi -ansiE -fullwarn" dnl IRIX
- "+ESlit % +w1 -Aa" dnl HP-UX C
- "-Xc % -pvctl[,]fullmsg -Xc" dnl NEC SX-5 (Super-UX 10)
- "-h conform % -h msglevel 2 -h conform" dnl Cray C (Unicos)
- #
-do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
- AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
-done
- FLAGS="$ac_save_[]FLAGS"
- AC_LANG_RESTORE
-])
-case ".$VAR" in
- .ok|.ok,*) m4_ifvaln($3,$3) ;;
- .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
- AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
- *) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
- fi ]) ;;
-esac
-AS_VAR_POPDEF([VAR])dnl
-AS_VAR_POPDEF([FLAGS])dnl
-])
-
-dnl the only difference - the LANG selection... and the default FLAGS
-
-AC_DEFUN([AX_CXXFLAGS_WARN_ALL_ANSI],[dnl
-AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_warn_all_ansi])dnl
-AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum ansi warnings],
-VAR,[VAR="no, unknown"
- AC_LANG_SAVE
- AC_LANG_CXX
- ac_save_[]FLAGS="$[]FLAGS"
-# IRIX C compiler:
-# -use_readonly_const is the default for IRIX C,
-# puts them into .rodata, but they are copied later.
-# need to be "-G0 -rdatashared" for strictmode but
-# I am not sure what effect that has really. - guidod
-for ac_arg dnl
-in "-pedantic % -Wall -ansi -pedantic" dnl GCC
- "-xstrconst % -v -Xc" dnl Solaris C
- "-std1 % -verbose -w0 -warnprotos -std1" dnl Digital Unix
- " % -qlanglvl=ansi -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX
- " % -ansi -ansiE -fullwarn" dnl IRIX
- "+ESlit % +w1 -Aa" dnl HP-UX C
- "-Xc % -pvctl[,]fullmsg -Xc" dnl NEC SX-5 (Super-UX 10)
- "-h conform % -h msglevel 2 -h conform" dnl Cray C (Unicos)
- #
-do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
- AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
-done
- FLAGS="$ac_save_[]FLAGS"
- AC_LANG_RESTORE
-])
-case ".$VAR" in
- .ok|.ok,*) m4_ifvaln($3,$3) ;;
- .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
- AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
- *) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
- fi ]) ;;
-esac
-AS_VAR_POPDEF([VAR])dnl
-AS_VAR_POPDEF([FLAGS])dnl
-])
-
+++ /dev/null
-AC_DEFUN([AX_CHECK_COMPILER_FLAGS],
-[AC_PREREQ(2.59) dnl for _AC_LANG_PREFIX
-AC_MSG_CHECKING([whether _AC_LANG compiler accepts $1])
-dnl Some hackery here since AC_CACHE_VAL can't handle a non-literal varname:
-AS_LITERAL_IF([$1],
- [AC_CACHE_VAL(AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1), [
- ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
- _AC_LANG_PREFIX[]FLAGS="$1"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
- AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=yes,
- AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=no)
- _AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])],
- [ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
- _AC_LANG_PREFIX[]FLAGS="$1"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
- eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=yes,
- eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)=no)
- _AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])
-eval ax_check_compiler_flags=$AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_$1)
-AC_MSG_RESULT($ax_check_compiler_flags)
-if test "x$ax_check_compiler_flags" = xyes; then
- m4_default([$2], :)
-else
- m4_default([$3], :)
-fi
-])dnl AX_CHECK_COMPILER_FLAG
+++ /dev/null
-AC_DEFUN([AX_COMPILER_VENDOR],
-[
-AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
- [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
- # note: don't check for gcc first since some other compilers define __GNUC__
- for ventest in intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ gnu:__GNUC__ sun:__SUNPRO_C,__SUNPRO_CC hp:__HP_cc,__HP_aCC dec:__DECC,__DECCXX,__DECC_VER,__DECCXX_VER borland:__BORLANDC__,__TURBOC__ comeau:__COMO__ cray:_CRAYC kai:__KCC lcc:__LCC__ metrowerks:__MWERKS__ sgi:__sgi,sgi microsoft:_MSC_VER watcom:__WATCOMC__ portland:__PGI; do
- vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
-#if !($vencpp)
- thisisanerror;
-#endif
-])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
- done
- ])
-])
+++ /dev/null
-#! /bin/sh
-./configure "$@" --disable-shared
+++ /dev/null
-# -*- Autoconf -*-
-# Process this file with autoconf to produce a configure script.
-
-AC_PREREQ(2.59)
-AC_INIT(FULL-PACKAGE-NAME, VERSION, BUG-REPORT-ADDRESS)
-AC_CONFIG_AUX_DIR(build)
-AM_INIT_AUTOMAKE(libg726,0.1)
-AC_CONFIG_SRCDIR([src])
-
-#Set default language
-AC_LANG_C
-# Checks for programs.
-AC_PROG_CC
-AC_PROG_MAKE_SET
-AC_PROG_LIBTOOL
-AC_PROG_INSTALL
-
-#Check for compiler vendor
-AX_COMPILER_VENDOR
-
-# Optimize
-AC_ARG_ENABLE(optimization,
-[AC_HELP_STRING([--enable-optimization],[Set if you want us to add max optimising compiler flags])],[enable_optimizer="$enableval"],[enable_optimizer="no"])
-
-if test "${enable_optimizer}" = "yes" ; then
- AC_DEFINE([OPTIMZER],[],[Enable Optimization.])
- AX_CC_MAXOPT
-fi
-
-# Enable debugging
-AC_ARG_ENABLE(debug,
-[AC_HELP_STRING([--enable-debug],[build with debug information])],[enable_debug="$enable_debug"],[enable_debug="yes"])
-
-if test "${enable_debug}" = "yes"; then
- AC_DEFINE([DEBUG],[],[Enable extra debugging.])
- AX_CFLAGS_WARN_ALL_ANSI
-fi
-
-AM_CONDITIONAL([WANT_DEBUG],[test "${enable_debug}" = "yes"])
-
-
-case "$host" in
- *-solaris2*)
- if test "x${ax_cv_c_compiler_vendor}" = "xsun" ; then
- SOLINK="-Bdynamic -dy -G"
- new_AM_CFLAGS="-KPIC -DPIC"
- new_AM_LDFLAGS="-R${prefix}/lib"
- elif test "x${ax_cv_c_compiler_vendor}" = "xgnu" ; then
- SOLINK="-Bdynamic -dy -G"
- new_AM_CFLAGS="-fPIC"
- new_AM_LDFLAGS=""
- fi
- DYNAMIC_LIB_EXTEN="so"
- ;;
- *-darwin*)
- if test "x${ax_cv_c_compiler_vendor}"="xgnu" ; then
- SOLINK="-dynamic -bundle -force-flat-namespace"
- new_AM_CFLAGS="-DMACOSX"
- new_AM_LDFLAGS=""
- fi
- DYNAMIC_LIB_EXTEN="dylib"
- ;;
- x86_64-*-linux-gnu)
- if test "x${ax_cv_c_compiler_vendor}" = "xsun" ; then
- SOLINK="-Bdynamic -dy -G"
- new_AM_CFLAGS="-KPIC -DPIC"
- new_AM_LDFLAGS="-R${prefix}/lib"
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- new_AM_CFLAGS="-fPIC"
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- fi
- DYNAMIC_LIB_EXTEN="so"
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- if test "x${ax_cv_c_compiler_vendor}" = "xsun" ; then
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- new_AM_CFLAGS="-KPIC -DPIC"
- new_AM_LDFLAGS="-R${prefix}/lib"
- elif test "x${ax_cv_c_compiler_vendor}"="xgnu" ; then
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- new_AM_CFLAGS="-fpic"
- new_AM_LDFLAGS=""
- fi
- DYNAMIC_LIB_EXTEN="so"
- ;;
- x86_64-*-freebsd*|amd64-*-freebsd*)
- SOLINK="-shared -Xlinker -x"
- new_AM_CFLAGS="-fPIC"
- new_AM_LDFLAGS=""
- DYNAMIC_LIB_EXTEN="so"
- ;;
- i*6-*-freebsd*)
- SOLINK="-shared -Xlinker -x"
- new_AM_CFLAGS="-fpic"
- new_AM_LDFLAGS=""
- DYNAMIC_LIB_EXTEN="so"
- ;;
-esac
-# Enable 64 bit build
-AC_ARG_ENABLE(64,
-[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
-
-if test "x${ax_cv_c_compiler_vendor}" = "xsun" ; then
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- new_AM_CFLAGS="$new_AM_CFLAGS -m64"
- fi
-fi
-AC_SUBST(new_AM_CFLAGS)
-AC_SUBST(new_AM_LDFLAGS)
-AC_SUBST(SOLINK)
-AC_SUBST(DYNAMIC_LIB_EXTEN)
-
-# Checks for header files.
-AC_HEADER_DIRENT
-AC_HEADER_STDC
-
-# Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
-AC_C_INLINE
-AC_TYPE_SIZE_T
-AC_HEADER_TIME
-AC_STRUCT_TM
-
-# Checks for library functions.
-AC_PROG_GCC_TRADITIONAL
-AC_FUNC_MALLOC
-AC_TYPE_SIGNAL
-AC_FUNC_STRFTIME
-
-AC_CONFIG_FILES([Makefile])
-
-AC_OUTPUT
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+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-/*
- * December 30, 1994:
- * Functions linear2alaw, linear2ulaw have been updated to correctly
- * convert unquantized 16 bit values.
- * Tables for direct u- to A-law and A- to u-law conversions have been
- * corrected.
- * Borge Lindberg, Center for PersonKommunikation, Aalborg University.
- * bli@cpk.auc.dk
- *
- */
-/*
- * Downloaded from comp.speech site in Cambridge.
- *
- */
-
-#include "g711.h"
-#ifdef __ICC
-#pragma warning (disable:810 869 1418)
-#endif
-
-/*
- * g711.c
- *
- * u-law, A-law and linear PCM conversions.
- */
-#define SIGN_BIT (0x80) /* Sign bit for a A-law byte. */
-#define QUANT_MASK (0xf) /* Quantization field mask. */
-#define NSEGS (8) /* Number of A-law segments. */
-#define SEG_SHIFT (4) /* Left shift for segment number. */
-#define SEG_MASK (0x70) /* Segment field mask. */
-
-static short seg_aend[8] = { 0x1F, 0x3F, 0x7F, 0xFF,
- 0x1FF, 0x3FF, 0x7FF, 0xFFF
-};
-static short seg_uend[8] = { 0x3F, 0x7F, 0xFF, 0x1FF,
- 0x3FF, 0x7FF, 0xFFF, 0x1FFF
-};
-
-/* copy from CCITT G.711 specifications */
-unsigned char _u2a[128] = { /* u- to A-law conversions */
- 1, 1, 2, 2, 3, 3, 4, 4,
- 5, 5, 6, 6, 7, 7, 8, 8,
- 9, 10, 11, 12, 13, 14, 15, 16,
- 17, 18, 19, 20, 21, 22, 23, 24,
- 25, 27, 29, 31, 33, 34, 35, 36,
- 37, 38, 39, 40, 41, 42, 43, 44,
- 46, 48, 49, 50, 51, 52, 53, 54,
- 55, 56, 57, 58, 59, 60, 61, 62,
- 64, 65, 66, 67, 68, 69, 70, 71,
- 72, 73, 74, 75, 76, 77, 78, 79,
-/* corrected:
- 81, 82, 83, 84, 85, 86, 87, 88,
- should be: */
- 80, 82, 83, 84, 85, 86, 87, 88,
- 89, 90, 91, 92, 93, 94, 95, 96,
- 97, 98, 99, 100, 101, 102, 103, 104,
- 105, 106, 107, 108, 109, 110, 111, 112,
- 113, 114, 115, 116, 117, 118, 119, 120,
- 121, 122, 123, 124, 125, 126, 127, 128
-};
-
-unsigned char _a2u[128] = { /* A- to u-law conversions */
- 1, 3, 5, 7, 9, 11, 13, 15,
- 16, 17, 18, 19, 20, 21, 22, 23,
- 24, 25, 26, 27, 28, 29, 30, 31,
- 32, 32, 33, 33, 34, 34, 35, 35,
- 36, 37, 38, 39, 40, 41, 42, 43,
- 44, 45, 46, 47, 48, 48, 49, 49,
- 50, 51, 52, 53, 54, 55, 56, 57,
- 58, 59, 60, 61, 62, 63, 64, 64,
- 65, 66, 67, 68, 69, 70, 71, 72,
-/* corrected:
- 73, 74, 75, 76, 77, 78, 79, 79,
- should be: */
- 73, 74, 75, 76, 77, 78, 79, 80,
- 80, 81, 82, 83, 84, 85, 86, 87,
- 88, 89, 90, 91, 92, 93, 94, 95,
- 96, 97, 98, 99, 100, 101, 102, 103,
- 104, 105, 106, 107, 108, 109, 110, 111,
- 112, 113, 114, 115, 116, 117, 118, 119,
- 120, 121, 122, 123, 124, 125, 126, 127
-};
-
-static short search(short val, short *table, short size)
-{
- short i;
-
- for (i = 0; i < size; i++) {
- if (val <= *table++)
- return (i);
- }
- return (size);
-}
-
-/*
- * linear2alaw() - Convert a 16-bit linear PCM value to 8-bit A-law
- *
- * linear2alaw() accepts an 16-bit integer and encodes it as A-law data.
- *
- * Linear Input Code Compressed Code
- * ------------------------ ---------------
- * 0000000wxyza 000wxyz
- * 0000001wxyza 001wxyz
- * 000001wxyzab 010wxyz
- * 00001wxyzabc 011wxyz
- * 0001wxyzabcd 100wxyz
- * 001wxyzabcde 101wxyz
- * 01wxyzabcdef 110wxyz
- * 1wxyzabcdefg 111wxyz
- *
- * For further information see John C. Bellamy's Digital Telephony, 1982,
- * John Wiley & Sons, pps 98-111 and 472-476.
- */
-unsigned char linear2alaw(short pcm_val)
-{ /* 2's complement (16-bit range) */
- short mask;
- short seg;
- unsigned char aval;
-
- pcm_val = pcm_val >> 3;
-
- if (pcm_val >= 0) {
- mask = 0xD5; /* sign (7th) bit = 1 */
- } else {
- mask = 0x55; /* sign bit = 0 */
- pcm_val = -pcm_val - 1;
- }
-
- /* Convert the scaled magnitude to segment number. */
- seg = search(pcm_val, seg_aend, 8);
-
- /* Combine the sign, segment, and quantization bits. */
-
- if (seg >= 8) /* out of range, return maximum value. */
- return (unsigned char) (0x7F ^ mask);
- else {
- aval = (unsigned char) seg << SEG_SHIFT;
- if (seg < 2)
- aval |= (pcm_val >> 1) & QUANT_MASK;
- else
- aval |= (pcm_val >> seg) & QUANT_MASK;
- return (unsigned char)(aval ^ mask);
- }
-}
-
-/*
- * alaw2linear() - Convert an A-law value to 16-bit linear PCM
- *
- */
-short alaw2linear(unsigned char a_val)
-{
- short t;
- short seg;
-
- a_val ^= 0x55;
-
- t = (a_val & QUANT_MASK) << 4;
- seg = (short)(((unsigned) a_val & SEG_MASK) >> SEG_SHIFT);
- switch (seg) {
- case 0:
- t += 8;
- break;
- case 1:
- t += 0x108;
- break;
- default:
- t += 0x108;
- t <<= seg - 1;
- }
- return ((a_val & SIGN_BIT) ? t : -t);
-}
-
-#define BIAS (0x84) /* Bias for linear code. */
-#define CLIP 8159
-
-/*
-* linear2ulaw() - Convert a linear PCM value to u-law
-*
-* In order to simplify the encoding process, the original linear magnitude
-* is biased by adding 33 which shifts the encoding range from (0 - 8158) to
-* (33 - 8191). The result can be seen in the following encoding table:
-*
-* Biased Linear Input Code Compressed Code
-* ------------------------ ---------------
-* 00000001wxyza 000wxyz
-* 0000001wxyzab 001wxyz
-* 000001wxyzabc 010wxyz
-* 00001wxyzabcd 011wxyz
-* 0001wxyzabcde 100wxyz
-* 001wxyzabcdef 101wxyz
-* 01wxyzabcdefg 110wxyz
-* 1wxyzabcdefgh 111wxyz
-*
-* Each biased linear code has a leading 1 which identifies the segment
-* number. The value of the segment number is equal to 7 minus the number
-* of leading 0's. The quantization interval is directly available as the
-* four bits wxyz. * The trailing bits (a - h) are ignored.
-*
-* Ordinarily the complement of the resulting code word is used for
-* transmission, and so the code word is complemented before it is returned.
-*
-* For further information see John C. Bellamy's Digital Telephony, 1982,
-* John Wiley & Sons, pps 98-111 and 472-476.
-*/
-unsigned char linear2ulaw(short pcm_val)
-{ /* 2's complement (16-bit range) */
- short mask;
- short seg;
- unsigned char uval;
-
- /* Get the sign and the magnitude of the value. */
- pcm_val = pcm_val >> 2;
- if (pcm_val < 0) {
- pcm_val = -pcm_val;
- mask = 0x7F;
- } else {
- mask = 0xFF;
- }
- if (pcm_val > CLIP)
- pcm_val = CLIP; /* clip the magnitude */
- pcm_val += (BIAS >> 2);
-
- /* Convert the scaled magnitude to segment number. */
- seg = search(pcm_val, seg_uend, 8);
-
- /*
- * Combine the sign, segment, quantization bits;
- * and complement the code word.
- */
- if (seg >= 8) /* out of range, return maximum value. */
- return (unsigned char) (0x7F ^ mask);
- else {
- uval = (unsigned char) ((seg << 4) | ((pcm_val >> (seg + 1)) & 0xF));
- return (unsigned char) (uval ^ mask);
- }
-
-}
-
-/*
- * ulaw2linear() - Convert a u-law value to 16-bit linear PCM
- *
- * First, a biased linear code is derived from the code word. An unbiased
- * output can then be obtained by subtracting 33 from the biased code.
- *
- * Note that this function expects to be passed the complement of the
- * original code word. This is in keeping with ISDN conventions.
- */
-short ulaw2linear(unsigned char u_val)
-{
- short t;
-
- /* Complement to obtain normal u-law value. */
- u_val = ~u_val;
-
- /*
- * Extract and bias the quantization bits. Then
- * shift up by the segment number and subtract out the bias.
- */
- t = ((u_val & QUANT_MASK) << 3) + BIAS;
- t <<= ((unsigned) u_val & SEG_MASK) >> SEG_SHIFT;
-
- return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));
-}
-
-/* A-law to u-law conversion */
-unsigned char alaw2ulaw(unsigned char aval)
-{
- aval &= 0xff;
- return (unsigned char) ((aval & 0x80) ? (0xFF ^ _a2u[aval ^ 0xD5]) : (0x7F ^ _a2u[aval ^ 0x55]));
-}
-
-/* u-law to A-law conversion */
-unsigned char ulaw2alaw(unsigned char uval)
-{
- uval &= 0xff;
- return (unsigned char) ((uval & 0x80) ? (0xD5 ^ (_u2a[0xFF ^ uval] - 1)) : (0x55 ^ (_u2a[0x7F ^ uval] - 1)));
-}
-
-/* ---------- end of g711.c ----------------------------------------------------- */
+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-/*
- * December 30, 1994:
- * Functions linear2alaw, linear2ulaw have been updated to correctly
- * convert unquantized 16 bit values.
- * Tables for direct u- to A-law and A- to u-law conversions have been
- * corrected.
- * Borge Lindberg, Center for PersonKommunikation, Aalborg University.
- * bli@cpk.auc.dk
- *
- */
-/*
- * Downloaded from comp.speech site in Cambridge.
- *
- */
-
-#ifndef _G711_H_
-#define _G711_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-unsigned char linear2alaw(short pcm_val);
-short alaw2linear(unsigned char a_val);
-unsigned char linear2ulaw(short pcm_val);
-short ulaw2linear(unsigned char u_val);
-unsigned char alaw2ulaw(unsigned char aval);
-unsigned char ulaw2alaw(unsigned char uval);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _G711_H_ */
+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-/* 16kbps version created, used 24kbps code and changing as little as possible.
- * G.726 specs are available from ITU's gopher or WWW site (http://www.itu.ch)
- * If any errors are found, please contact me at mrand@tamu.edu
- * -Marc Randolph
- */
-
-/*
- * g726_16.c
- *
- * Description:
- *
- * g723_16_encoder(), g723_16_decoder()
- *
- * These routines comprise an implementation of the CCITT G.726 16 Kbps
- * ADPCM coding algorithm. Essentially, this implementation is identical to
- * the bit level description except for a few deviations which take advantage
- * of workstation attributes, such as hardware 2's complement arithmetic.
- *
- * The ITU-T G.726 coder is an adaptive differential pulse code modulation
- * (ADPCM) waveform coding algorithm, suitable for coding of digitized
- * telephone bandwidth (0.3-3.4 kHz) speech or audio signals sampled at 8 kHz.
- * This coder operates on a sample-by-sample basis. Input samples may be
- * represented in linear PCM or companded 8-bit G.711 (m-law/A-law) formats
- * (i.e., 64 kbps). For 32 kbps operation, each sample is converted into a
- * 4-bit quantized difference signal resulting in a compression ratio of
- * 2:1 over the G.711 format. For 24 kbps 40 kbps operation, the quantized
- * difference signal is 3 bits and 5 bits, respectively.
- *
- * $Log: g726_16.c,v $
- * Revision 1.4 2002/11/20 04:29:13 robertj
- * Included optimisations for G.711 and G.726 codecs, thanks Ted Szoczei
- *
- * Revision 1.1 2002/02/11 23:24:23 robertj
- * Updated to openH323 v1.8.0
- *
- * Revision 1.2 2002/02/10 21:14:54 dereks
- * Add cvs log history to head of the file.
- * Ensure file is terminated by a newline.
- *
- *
- *
- *
- */
-#include "g72x.h"
-#include "private.h"
-
-/*
- * Maps G.723_16 code word to reconstructed scale factor normalized log
- * magnitude values. Comes from Table 11/G.726
- */
-static short _dqlntab[4] = { 116, 365, 365, 116};
-
-/* Maps G.723_16 code word to log of scale factor multiplier.
- *
- * _witab[4] is actually {-22 , 439, 439, -22}, but FILTD wants it
- * as WI << 5 (multiplied by 32), so we'll do that here
- */
-static short _witab[4] = {-704, 14048, 14048, -704};
-
-/*
- * Maps G.723_16 code words to a set of values whose long and short
- * term averages are computed and then compared to give an indication
- * how stationary (steady state) the signal is.
- */
-
-/* Comes from FUNCTF */
-static short _fitab[4] = {0, 0xE00, 0xE00, 0};
-
-/* Comes from quantizer decision level tables (Table 7/G.726)
- */
-static int qtab_723_16[1] = {261};
-
-
-/*
- * g723_16_encoder()
- *
- * Encodes a linear PCM, A-law or u-law input sample and returns its 2-bit code.
- * Returns -1 if invalid input coding value.
- */
-int
-g726_16_encoder(
- int sl,
- int in_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sez; /* ACCUM */
- int sei;
- int se;
- int d; /* SUBTA */
- int y; /* MIX */
- int i;
- int dq;
- int sr; /* ADDB */
- int dqsez; /* ADDC */
-
- switch (in_coding) { /* linearize input sample to 14-bit PCM */
- case AUDIO_ENCODING_ALAW:
- sl = alaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_ULAW:
- sl = ulaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_LINEAR:
- sl >>= 2; /* sl of 14-bit dynamic range */
- break;
- default:
- return (-1);
- }
-
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- sei = sezi + predictor_pole(state_ptr);
- se = sei >> 1; /* se = estimated signal */
-
- d = sl - se; /* d = estimation diff. */
-
- /* quantize prediction difference d */
- y = step_size(state_ptr); /* quantizer step size */
- i = quantize(d, y, qtab_723_16, 1); /* i = ADPCM code */
-
- /* Since quantize() only produces a three level output
- * (1, 2, or 3), we must create the fourth one on our own
- */
- if (i == 3) /* i code for the zero region */
- if ((d & 0x8000) == 0) /* If d > 0, i=3 isn't right... */
- i = 0;
-
- dq = reconstruct(i & 2, _dqlntab[i], y); /* quantized diff. */
-
- sr = (dq < 0) ? se - (dq & 0x3FFF) : se + dq; /* reconstructed signal */
-
- dqsez = sr + sez - se; /* pole prediction diff. */
-
- update(2, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr);
-
- return (i);
-}
-
-/*
- * g723_16_decoder()
- *
- * Decodes a 2-bit CCITT G.723_16 ADPCM code and returns
- * the resulting 16-bit linear PCM, A-law or u-law sample value.
- * -1 is returned if the output coding is unknown.
- */
-int
-g726_16_decoder(
- int i,
- int out_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sez; /* ACCUM */
- int sei;
- int se;
- int y; /* MIX */
- int dq;
- int sr; /* ADDB */
- int dqsez;
-
- i &= 0x03; /* mask to get proper bits */
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- sei = sezi + predictor_pole(state_ptr);
- se = sei >> 1; /* se = estimated signal */
-
- y = step_size(state_ptr); /* adaptive quantizer step size */
- dq = reconstruct(i & 0x02, _dqlntab[i], y); /* unquantize pred diff */
-
- sr = (dq < 0) ? (se - (dq & 0x3FFF)) : (se + dq); /* reconst. signal */
-
- dqsez = sr - se + sez; /* pole prediction diff. */
-
- update(2, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr);
-
- switch (out_coding) {
- case AUDIO_ENCODING_ALAW:
- return (tandem_adjust_alaw(sr, se, y, i, 2, qtab_723_16));
- case AUDIO_ENCODING_ULAW:
- return (tandem_adjust_ulaw(sr, se, y, i, 2, qtab_723_16));
- case AUDIO_ENCODING_LINEAR:
- return (sr << 2); /* sr was of 14-bit dynamic range */
- default:
- return (-1);
- }
-}
-
+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
-/*
- * g726_24.c
- *
- * Description:
- *
- * g723_24_encoder(), g723_24_decoder()
- *
- * These routines comprise an implementation of the CCITT G.723 24 Kbps
- * ADPCM coding algorithm. Essentially, this implementation is identical to
- * the bit level description except for a few deviations which take advantage
- * of workstation attributes, such as hardware 2's complement arithmetic.
- *
- * The ITU-T G.726 coder is an adaptive differential pulse code modulation
- * (ADPCM) waveform coding algorithm, suitable for coding of digitized
- * telephone bandwidth (0.3-3.4 kHz) speech or audio signals sampled at 8 kHz.
- * This coder operates on a sample-by-sample basis. Input samples may be
- * represented in linear PCM or companded 8-bit G.711 (m-law/A-law) formats
- * (i.e., 64 kbps). For 32 kbps operation, each sample is converted into a
- * 4-bit quantized difference signal resulting in a compression ratio of
- * 2:1 over the G.711 format. For 24 kbps 40 kbps operation, the quantized
- * difference signal is 3 bits and 5 bits, respectively.
- *
- * $Log: g726_24.c,v $
- * Revision 1.4 2002/11/20 04:29:13 robertj
- * Included optimisations for G.711 and G.726 codecs, thanks Ted Szoczei
- *
- * Revision 1.1 2002/02/11 23:24:23 robertj
- * Updated to openH323 v1.8.0
- *
- * Revision 1.2 2002/02/10 21:14:54 dereks
- * Add cvs log history to head of the file.
- * Ensure file is terminated by a newline.
- *
- *
- *
- */
-#include "g72x.h"
-#include "private.h"
-
-/*
- * Maps G.723_24 code word to reconstructed scale factor normalized log
- * magnitude values.
- */
-static short _dqlntab[8] = {-2048, 135, 273, 373, 373, 273, 135, -2048};
-
-/* Maps G.723_24 code word to log of scale factor multiplier. */
-static short _witab[8] = {-128, 960, 4384, 18624, 18624, 4384, 960, -128};
-
-/*
- * Maps G.723_24 code words to a set of values whose long and short
- * term averages are computed and then compared to give an indication
- * how stationary (steady state) the signal is.
- */
-static short _fitab[8] = {0, 0x200, 0x400, 0xE00, 0xE00, 0x400, 0x200, 0};
-
-static int qtab_723_24[3] = {8, 218, 331};
-
-/*
- * g723_24_encoder()
- *
- * Encodes a linear PCM, A-law or u-law input sample and returns its 3-bit code.
- * Returns -1 if invalid input coding value.
- */
-int
-g726_24_encoder(
- int sl,
- int in_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sei;
- int sez; /* ACCUM */
- int se;
- int d; /* SUBTA */
- int y; /* MIX */
- int i;
- int dq;
- int sr; /* ADDB */
- int dqsez; /* ADDC */
-
- switch (in_coding) { /* linearize input sample to 14-bit PCM */
- case AUDIO_ENCODING_ALAW:
- sl = alaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_ULAW:
- sl = ulaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_LINEAR:
- sl >>= 2; /* sl of 14-bit dynamic range */
- break;
- default:
- return (-1);
- }
-
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- sei = sezi + predictor_pole(state_ptr);
- se = sei >> 1; /* se = estimated signal */
-
- d = sl - se; /* d = estimation diff. */
-
- /* quantize prediction difference d */
- y = step_size(state_ptr); /* quantizer step size */
- i = quantize(d, y, qtab_723_24, 3); /* i = ADPCM code */
- dq = reconstruct(i & 4, _dqlntab[i], y); /* quantized diff. */
-
- sr = (dq < 0) ? se - (dq & 0x3FFF) : se + dq; /* reconstructed signal */
-
- dqsez = sr + sez - se; /* pole prediction diff. */
-
- update(3, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr);
-
- return (i);
-}
-
-/*
- * g723_24_decoder()
- *
- * Decodes a 3-bit CCITT G.723_24 ADPCM code and returns
- * the resulting 16-bit linear PCM, A-law or u-law sample value.
- * -1 is returned if the output coding is unknown.
- */
-int
-g726_24_decoder(
- int i,
- int out_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sez; /* ACCUM */
- int sei;
- int se;
- int y; /* MIX */
- int dq;
- int sr; /* ADDB */
- int dqsez;
-
- i &= 0x07; /* mask to get proper bits */
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- sei = sezi + predictor_pole(state_ptr);
- se = sei >> 1; /* se = estimated signal */
-
- y = step_size(state_ptr); /* adaptive quantizer step size */
- dq = reconstruct(i & 0x04, _dqlntab[i], y); /* unquantize pred diff */
-
- sr = (dq < 0) ? (se - (dq & 0x3FFF)) : (se + dq); /* reconst. signal */
-
- dqsez = sr - se + sez; /* pole prediction diff. */
-
- update(3, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr);
-
- switch (out_coding) {
- case AUDIO_ENCODING_ALAW:
- return (tandem_adjust_alaw(sr, se, y, i, 4, qtab_723_24));
- case AUDIO_ENCODING_ULAW:
- return (tandem_adjust_ulaw(sr, se, y, i, 4, qtab_723_24));
- case AUDIO_ENCODING_LINEAR:
- return (sr << 2); /* sr was of 14-bit dynamic range */
- default:
- return (-1);
- }
-}
-
+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
-/*
- * g726_32.c
- *
- * Description:
- *
- * g721_encoder(), g721_decoder()
- *
- * These routines comprise an implementation of the CCITT G.721 ADPCM
- * coding algorithm. Essentially, this implementation is identical to
- * the bit level description except for a few deviations which
- * take advantage of work station attributes, such as hardware 2's
- * complement arithmetic and large memory. Specifically, certain time
- * consuming operations such as multiplications are replaced
- * with lookup tables and software 2's complement operations are
- * replaced with hardware 2's complement.
- *
- * The deviation from the bit level specification (lookup tables)
- * preserves the bit level performance specifications.
- *
- * As outlined in the G.721 Recommendation, the algorithm is broken
- * down into modules. Each section of code below is preceded by
- * the name of the module which it is implementing.
- *
- * The ITU-T G.726 coder is an adaptive differential pulse code modulation
- * (ADPCM) waveform coding algorithm, suitable for coding of digitized
- * telephone bandwidth (0.3-3.4 kHz) speech or audio signals sampled at 8 kHz.
- * This coder operates on a sample-by-sample basis. Input samples may be
- * represented in linear PCM or companded 8-bit G.711 (m-law/A-law) formats
- * (i.e., 64 kbps). For 32 kbps operation, each sample is converted into a
- * 4-bit quantized difference signal resulting in a compression ratio of
- * 2:1 over the G.711 format. For 24 kbps 40 kbps operation, the quantized
- * difference signal is 3 bits and 5 bits, respectively.
- *
- * $Log: g726_32.c,v $
- * Revision 1.5 2002/11/20 04:29:13 robertj
- * Included optimisations for G.711 and G.726 codecs, thanks Ted Szoczei
- *
- * Revision 1.1 2002/02/11 23:24:23 robertj
- * Updated to openH323 v1.8.0
- *
- * Revision 1.2 2002/02/10 21:14:54 dereks
- * Add cvs log history to head of the file.
- * Ensure file is terminated by a newline.
- *
- *
- *
- */
-#include "g72x.h"
-#include "private.h"
-
-static int qtab_721[7] = {-124, 80, 178, 246, 300, 349, 400};
-/*
- * Maps G.721 code word to reconstructed scale factor normalized log
- * magnitude values.
- */
-static short _dqlntab[16] = {-2048, 4, 135, 213, 273, 323, 373, 425,
- 425, 373, 323, 273, 213, 135, 4, -2048};
-
-/* Maps G.721 code word to log of scale factor multiplier. */
-static short _witab[16] = {-12, 18, 41, 64, 112, 198, 355, 1122,
- 1122, 355, 198, 112, 64, 41, 18, -12};
-/*
- * Maps G.721 code words to a set of values whose long and short
- * term averages are computed and then compared to give an indication
- * how stationary (steady state) the signal is.
- */
-static short _fitab[16] = {0, 0, 0, 0x200, 0x200, 0x200, 0x600, 0xE00,
- 0xE00, 0x600, 0x200, 0x200, 0x200, 0, 0, 0};
-
-/*
- * g721_encoder()
- *
- * Encodes the input vale of linear PCM, A-law or u-law data sl and returns
- * the resulting code. -1 is returned for unknown input coding value.
- */
-int
-g726_32_encoder(
- int sl,
- int in_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sez; /* ACCUM */
- int se;
- int d; /* SUBTA */
- int y; /* MIX */
- int i;
- int dq;
- int sr; /* ADDB */
- int dqsez; /* ADDC */
-
- switch (in_coding) { /* linearize input sample to 14-bit PCM */
- case AUDIO_ENCODING_ALAW:
- sl = alaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_ULAW:
- sl = ulaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_LINEAR:
- sl >>= 2; /* 14-bit dynamic range */
- break;
- default:
- return (-1);
- }
-
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- se = (sezi + predictor_pole(state_ptr)) >> 1; /* estimated signal */
-
- d = sl - se; /* estimation difference */
-
- /* quantize the prediction difference */
- y = step_size(state_ptr); /* quantizer step size */
- i = quantize(d, y, qtab_721, 7); /* i = ADPCM code */
-
- dq = reconstruct(i & 8, _dqlntab[i], y); /* quantized est diff */
-
- sr = (dq < 0) ? se - (dq & 0x3FFF) : se + dq; /* reconst. signal */
-
- dqsez = sr + sez - se; /* pole prediction diff. */
-
- update(4, y, _witab[i] << 5, _fitab[i], dq, sr, dqsez, state_ptr);
-
- return (i);
-}
-
-/*
- * g721_decoder()
- *
- * Description:
- *
- * Decodes a 4-bit code of G.721 encoded data of i and
- * returns the resulting linear PCM, A-law or u-law value.
- * return -1 for unknown out_coding value.
- */
-int
-g726_32_decoder(
- int i,
- int out_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sez; /* ACCUM */
- int sei;
- int se;
- int y; /* MIX */
- int dq;
- int sr; /* ADDB */
- int dqsez;
- long lino;
-
- i &= 0x0f; /* mask to get proper bits */
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- sei = sezi + predictor_pole(state_ptr);
- se = sei >> 1; /* se = estimated signal */
-
- y = step_size(state_ptr); /* dynamic quantizer step size */
-
- dq = reconstruct(i & 0x08, _dqlntab[i], y); /* quantized diff. */
-
- sr = (dq < 0) ? (se - (dq & 0x3FFF)) : se + dq; /* reconst. signal */
-
- dqsez = sr - se + sez; /* pole prediction diff. */
-
- update(4, y, _witab[i] << 5, _fitab[i], dq, sr, dqsez, state_ptr);
-
- switch (out_coding) {
- case AUDIO_ENCODING_ALAW:
- return (tandem_adjust_alaw(sr, se, y, i, 8, qtab_721));
- case AUDIO_ENCODING_ULAW:
- return (tandem_adjust_ulaw(sr, se, y, i, 8, qtab_721));
- case AUDIO_ENCODING_LINEAR:
- lino = (long)sr << 2; /* this seems to overflow a short*/
- lino = lino > 32767 ? 32767 : lino;
- lino = lino < -32768 ? -32768 : lino;
- return lino;//(sr << 2); /* sr was 14-bit dynamic range */
- default:
- return (-1);
- }
-}
-
+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
-/*
- * g726_40.c
- *
- * Description:
- *
- * g723_40_encoder(), g723_40_decoder()
- *
- * These routines comprise an implementation of the CCITT G.723 40Kbps
- * ADPCM coding algorithm. Essentially, this implementation is identical to
- * the bit level description except for a few deviations which
- * take advantage of workstation attributes, such as hardware 2's
- * complement arithmetic.
- *
- * The deviation from the bit level specification (lookup tables),
- * preserves the bit level performance specifications.
- *
- * As outlined in the G.723 Recommendation, the algorithm is broken
- * down into modules. Each section of code below is preceded by
- * the name of the module which it is implementing.
- *
- * The ITU-T G.726 coder is an adaptive differential pulse code modulation
- * (ADPCM) waveform coding algorithm, suitable for coding of digitized
- * telephone bandwidth (0.3-3.4 kHz) speech or audio signals sampled at 8 kHz.
- * This coder operates on a sample-by-sample basis. Input samples may be
- * represented in linear PCM or companded 8-bit G.711 (m-law/A-law) formats
- * (i.e., 64 kbps). For 32 kbps operation, each sample is converted into a
- * 4-bit quantized difference signal resulting in a compression ratio of
- * 2:1 over the G.711 format. For 24 kbps 40 kbps operation, the quantized
- * difference signal is 3 bits and 5 bits, respectively.
- *
- * $Log: g726_40.c,v $
- * Revision 1.4 2002/11/20 04:29:13 robertj
- * Included optimisations for G.711 and G.726 codecs, thanks Ted Szoczei
- *
- * Revision 1.1 2002/02/11 23:24:23 robertj
- * Updated to openH323 v1.8.0
- *
- * Revision 1.2 2002/02/10 21:14:54 dereks
- * Add cvs log history to head of the file.
- * Ensure file is terminated by a newline.
- *
- *
- *
- */
-
-#include "g72x.h"
-#include "private.h"
-
-/*
- * Maps G.723_40 code word to ructeconstructed scale factor normalized log
- * magnitude values.
- */
-static short _dqlntab[32] = {-2048, -66, 28, 104, 169, 224, 274, 318,
- 358, 395, 429, 459, 488, 514, 539, 566,
- 566, 539, 514, 488, 459, 429, 395, 358,
- 318, 274, 224, 169, 104, 28, -66, -2048};
-
-/* Maps G.723_40 code word to log of scale factor multiplier. */
-static short _witab[32] = {448, 448, 768, 1248, 1280, 1312, 1856, 3200,
- 4512, 5728, 7008, 8960, 11456, 14080, 16928, 22272,
- 22272, 16928, 14080, 11456, 8960, 7008, 5728, 4512,
- 3200, 1856, 1312, 1280, 1248, 768, 448, 448};
-
-/*
- * Maps G.723_40 code words to a set of values whose long and short
- * term averages are computed and then compared to give an indication
- * how stationary (steady state) the signal is.
- */
-static short _fitab[32] = {0, 0, 0, 0, 0, 0x200, 0x200, 0x200,
- 0x200, 0x200, 0x400, 0x600, 0x800, 0xA00, 0xC00, 0xC00,
- 0xC00, 0xC00, 0xA00, 0x800, 0x600, 0x400, 0x200, 0x200,
- 0x200, 0x200, 0x200, 0, 0, 0, 0, 0};
-
-static int qtab_723_40[15] = {-122, -16, 68, 139, 198, 250, 298, 339,
- 378, 413, 445, 475, 502, 528, 553};
-
-/*
- * g723_40_encoder()
- *
- * Encodes a 16-bit linear PCM, A-law or u-law input sample and returns
- * the resulting 5-bit CCITT G.723 40Kbps code.
- * Returns -1 if the input coding value is invalid.
- */
-int
-g726_40_encoder(
- int sl,
- int in_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sez; /* ACCUM */
- int sei;
- int se;
- int d; /* SUBTA */
- int y; /* MIX */
- int i;
- int dq;
- int sr; /* ADDB */
- int dqsez; /* ADDC */
-
- switch (in_coding) { /* linearize input sample to 14-bit PCM */
- case AUDIO_ENCODING_ALAW:
- sl = alaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_ULAW:
- sl = ulaw2linear(sl) >> 2;
- break;
- case AUDIO_ENCODING_LINEAR:
- sl >>= 2; /* sl of 14-bit dynamic range */
- break;
- default:
- return (-1);
- }
-
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- sei = sezi + predictor_pole(state_ptr);
- se = sei >> 1; /* se = estimated signal */
-
- d = sl - se; /* d = estimation difference */
-
- /* quantize prediction difference */
- y = step_size(state_ptr); /* adaptive quantizer step size */
- i = quantize(d, y, qtab_723_40, 15); /* i = ADPCM code */
-
- dq = reconstruct(i & 0x10, _dqlntab[i], y); /* quantized diff */
-
- sr = (dq < 0) ? se - (dq & 0x7FFF) : se + dq; /* reconstructed signal */
-
- dqsez = sr + sez - se; /* dqsez = pole prediction diff. */
-
- update(5, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr);
-
- return (i);
-}
-
-/*
- * g723_40_decoder()
- *
- * Decodes a 5-bit CCITT G.723 40Kbps code and returns
- * the resulting 16-bit linear PCM, A-law or u-law sample value.
- * -1 is returned if the output coding is unknown.
- */
-int
-g726_40_decoder(
- int i,
- int out_coding,
- g726_state *state_ptr)
-{
- int sezi;
- int sez; /* ACCUM */
- int sei;
- int se;
- int y; /* MIX */
- int dq;
- int sr; /* ADDB */
- int dqsez;
-
- i &= 0x1f; /* mask to get proper bits */
- sezi = predictor_zero(state_ptr);
- sez = sezi >> 1;
- sei = sezi + predictor_pole(state_ptr);
- se = sei >> 1; /* se = estimated signal */
-
- y = step_size(state_ptr); /* adaptive quantizer step size */
- dq = reconstruct(i & 0x10, _dqlntab[i], y); /* estimation diff. */
-
- sr = (dq < 0) ? (se - (dq & 0x7FFF)) : (se + dq); /* reconst. signal */
-
- dqsez = sr - se + sez; /* pole prediction diff. */
-
- update(5, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr);
-
- switch (out_coding) {
- case AUDIO_ENCODING_ALAW:
- return (tandem_adjust_alaw(sr, se, y, i, 0x10, qtab_723_40));
- case AUDIO_ENCODING_ULAW:
- return (tandem_adjust_ulaw(sr, se, y, i, 0x10, qtab_723_40));
- case AUDIO_ENCODING_LINEAR:
- return (sr << 2); /* sr was of 14-bit dynamic range */
- default:
- return (-1);
- }
-}
-
+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
-/*
- * $Log: g72x.c,v $
- * Revision 1.3 2002/11/20 04:29:13 robertj
- * Included optimisations for G.711 and G.726 codecs, thanks Ted Szoczei
- *
- * Revision 1.1 2002/02/11 23:24:23 robertj
- * Updated to openH323 v1.8.0
- *
- * Revision 1.2 2002/02/10 21:14:54 dereks
- * Add cvs log history to head of the file.
- * Ensure file is terminated by a newline.
- *
- *
- *
- * Common routines for G.721 and G.723 conversions.
- */
-
-#include "g72x.h"
-#include "private.h"
-
-static int power2[15] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80,
- 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000};
-
-#ifndef abs
-#define abs(n) ((n)<0 ? -(n) : (n))
-#endif
-
-/*
- * quan()
- *
- * quantizes the input val against the table of size short integers.
- * It returns i if table[i - 1] <= val < table[i].
- *
- * Using linear search for simple coding.
- */
-static int
-quan(
- int val,
- int * table,
- int size)
-{
- int i;
-
- for (i = 0; i < size; i++)
- if (val < *table++)
- break;
- return (i);
-}
-
-/*
- * fmult()
- *
- * returns the integer product of the 14-bit integer "an" and
- * "floating point" representation (4-bit exponent, 6-bit mantessa) "srn".
- */
-static int
-fmult(
- int an,
- int srn)
-{
- int anmag;
- int anexp;
- int anmant;
- int wanexp;
- int wanmant;
- int retval;
-
- anmag = (an > 0) ? an : ((-an) & 0x1FFF);
- anexp = quan(anmag, power2, 15) - 6;
- anmant = (anmag == 0) ? 32 :
- (anexp >= 0) ? anmag >> anexp : anmag << -anexp;
- wanexp = anexp + ((srn >> 6) & 0xF) - 13;
-
- wanmant = (anmant * (srn & 077) + 0x30) >> 4;
- retval = (wanexp >= 0) ? ((wanmant << wanexp) & 0x7FFF) :
- (wanmant >> -wanexp);
-
- return (((an ^ srn) < 0) ? -retval : retval);
-}
-
-/*
- * g72x_init_state()
- *
- * This routine initializes and/or resets the g72x_state structure
- * pointed to by 'state_ptr'.
- * All the initial state values are specified in the CCITT G.721 document.
- */
-void
-g726_init_state(
- g726_state *state_ptr)
-{
- int cnta;
-
- state_ptr->yl = 34816;
- state_ptr->yu = 544;
- state_ptr->dms = 0;
- state_ptr->dml = 0;
- state_ptr->ap = 0;
- for (cnta = 0; cnta < 2; cnta++) {
- state_ptr->a[cnta] = 0;
- state_ptr->pk[cnta] = 0;
- state_ptr->sr[cnta] = 32;
- }
- for (cnta = 0; cnta < 6; cnta++) {
- state_ptr->b[cnta] = 0;
- state_ptr->dq[cnta] = 32;
- }
- state_ptr->td = 0;
-}
-
-/*
- * predictor_zero()
- *
- * computes the estimated signal from 6-zero predictor.
- *
- */
-int
-predictor_zero(
- g726_state *state_ptr)
-{
- int i;
- int sezi;
-
- sezi = fmult(state_ptr->b[0] >> 2, state_ptr->dq[0]);
- for (i = 1; i < 6; i++) /* ACCUM */
- sezi += fmult(state_ptr->b[i] >> 2, state_ptr->dq[i]);
- return (sezi);
-}
-/*
- * predictor_pole()
- *
- * computes the estimated signal from 2-pole predictor.
- *
- */
-int
-predictor_pole(
- g726_state *state_ptr)
-{
- return (fmult(state_ptr->a[1] >> 2, state_ptr->sr[1]) +
- fmult(state_ptr->a[0] >> 2, state_ptr->sr[0]));
-}
-/*
- * step_size()
- *
- * computes the quantization step size of the adaptive quantizer.
- *
- */
-int
-step_size(
- g726_state *state_ptr)
-{
- int y;
- int dif;
- int al;
-
- if (state_ptr->ap >= 256)
- return (state_ptr->yu);
- else {
- y = state_ptr->yl >> 6;
- dif = state_ptr->yu - y;
- al = state_ptr->ap >> 2;
- if (dif > 0)
- y += (dif * al) >> 6;
- else if (dif < 0)
- y += (dif * al + 0x3F) >> 6;
- return (y);
- }
-}
-
-/*
- * quantize()
- *
- * Given a raw sample, 'd', of the difference signal and a
- * quantization step size scale factor, 'y', this routine returns the
- * ADPCM codeword to which that sample gets quantized. The step
- * size scale factor division operation is done in the log base 2 domain
- * as a subtraction.
- */
-int
-quantize(
- int d, /* Raw difference signal sample */
- int y, /* Step size multiplier */
- int * table, /* quantization table */
- int size) /* table size of integers */
-{
- int dqm; /* Magnitude of 'd' */
- int exp; /* Integer part of base 2 log of 'd' */
- int mant; /* Fractional part of base 2 log */
- int dl; /* Log of magnitude of 'd' */
- int dln; /* Step size scale factor normalized log */
- int i;
-
- /*
- * LOG
- *
- * Compute base 2 log of 'd', and store in 'dl'.
- */
- dqm = abs(d);
- exp = quan(dqm >> 1, power2, 15);
- mant = ((dqm << 7) >> exp) & 0x7F; /* Fractional portion. */
- dl = (exp << 7) + mant;
-
- /*
- * SUBTB
- *
- * "Divide" by step size multiplier.
- */
- dln = dl - (y >> 2);
-
- /*
- * QUAN
- *
- * Obtain codword i for 'd'.
- */
- i = quan(dln, table, size);
- if (d < 0) /* take 1's complement of i */
- return ((size << 1) + 1 - i);
- else if (i == 0) /* take 1's complement of 0 */
- return ((size << 1) + 1); /* new in 1988 */
- else
- return (i);
-}
-/*
- * reconstruct()
- *
- * Returns reconstructed difference signal 'dq' obtained from
- * codeword 'i' and quantization step size scale factor 'y'.
- * Multiplication is performed in log base 2 domain as addition.
- */
-int
-reconstruct(
- int sign, /* 0 for non-negative value */
- int dqln, /* G.72x codeword */
- int y) /* Step size multiplier */
-{
- int dql; /* Log of 'dq' magnitude */
- int dex; /* Integer part of log */
- int dqt;
- int dq; /* Reconstructed difference signal sample */
-
- dql = dqln + (y >> 2); /* ADDA */
-
- if (dql < 0) {
- return ((sign) ? -0x8000 : 0);
- } else { /* ANTILOG */
- dex = (dql >> 7) & 15;
- dqt = 128 + (dql & 127);
- dq = (short)((dqt << 7) >> (14 - dex));
- return ((sign) ? (dq - 0x8000) : dq);
- }
-}
-
-
-/*
- * update()
- *
- * updates the state variables for each output code
- */
-void
-update(
- int code_size, /* distinguish 723_40 with others */
- int y, /* quantizer step size */
- int wi, /* scale factor multiplier */
- int fi, /* for long/short term energies */
- int dq, /* quantized prediction difference */
- int sr, /* reconstructed signal */
- int dqsez, /* difference from 2-pole predictor */
- g726_state *state_ptr) /* coder state pointer */
-{
- int cnt;
- int mag, exp; /* Adaptive predictor, FLOAT A */
- int a2p; /* LIMC */
- int a1ul; /* UPA1 */
- int pks1; /* UPA2 */
- int fa1;
- int tr; /* tone/transition detector */
- int ylint, thr2, dqthr;
- int ylfrac, thr1;
- int pk0;
-
- pk0 = (dqsez < 0) ? 1 : 0; /* needed in updating predictor poles */
-
- mag = dq & 0x7FFF; /* prediction difference magnitude */
- /* TRANS */
- ylint = state_ptr->yl >> 15; /* exponent part of yl */
- ylfrac = (state_ptr->yl >> 10) & 0x1F; /* fractional part of yl */
- thr1 = (32 + ylfrac) << ylint; /* threshold */
- thr2 = (ylint > 9) ? 31 << 10 : thr1; /* limit thr2 to 31 << 10 */
- dqthr = (thr2 + (thr2 >> 1)) >> 1; /* dqthr = 0.75 * thr2 */
- if (state_ptr->td == 0) /* signal supposed voice */
- tr = 0;
- else if (mag <= dqthr) /* supposed data, but small mag */
- tr = 0; /* treated as voice */
- else /* signal is data (modem) */
- tr = 1;
-
- /*
- * Quantizer scale factor adaptation.
- */
-
- /* FUNCTW & FILTD & DELAY */
- /* update non-steady state step size multiplier */
- state_ptr->yu = y + ((wi - y) >> 5);
-
- /* LIMB */
- if (state_ptr->yu < 544) /* 544 <= yu <= 5120 */
- state_ptr->yu = 544;
- else if (state_ptr->yu > 5120)
- state_ptr->yu = 5120;
-
- /* FILTE & DELAY */
- /* update steady state step size multiplier */
- state_ptr->yl += state_ptr->yu + ((-state_ptr->yl) >> 6);
-
- /*
- * Adaptive predictor coefficients.
- */
- if (tr == 1) { /* reset a's and b's for modem signal */
- state_ptr->a[0] = 0;
- state_ptr->a[1] = 0;
- state_ptr->b[0] = 0;
- state_ptr->b[1] = 0;
- state_ptr->b[2] = 0;
- state_ptr->b[3] = 0;
- state_ptr->b[4] = 0;
- state_ptr->b[5] = 0;
- a2p = 0 ;
- } else { /* update a's and b's */
- pks1 = pk0 ^ state_ptr->pk[0]; /* UPA2 */
-
- /* update predictor pole a[1] */
- a2p = state_ptr->a[1] - (state_ptr->a[1] >> 7);
- if (dqsez != 0) {
- fa1 = (pks1) ? state_ptr->a[0] : -state_ptr->a[0];
- if (fa1 < -8191) /* a2p = function of fa1 */
- a2p -= 0x100;
- else if (fa1 > 8191)
- a2p += 0xFF;
- else
- a2p += fa1 >> 5;
-
- if (pk0 ^ state_ptr->pk[1])
- /* LIMC */
- if (a2p <= -12160)
- a2p = -12288;
- else if (a2p >= 12416)
- a2p = 12288;
- else
- a2p -= 0x80;
- else if (a2p <= -12416)
- a2p = -12288;
- else if (a2p >= 12160)
- a2p = 12288;
- else
- a2p += 0x80;
- }
-
- /* TRIGB & DELAY */
- state_ptr->a[1] = a2p;
-
- /* UPA1 */
- /* update predictor pole a[0] */
- state_ptr->a[0] -= state_ptr->a[0] >> 8;
- if (dqsez != 0) {
- if (pks1 == 0) {
- state_ptr->a[0] += 192;
- } else {
- state_ptr->a[0] -= 192;
- }
- }
- /* LIMD */
- a1ul = 15360 - a2p;
- if (state_ptr->a[0] < -a1ul)
- state_ptr->a[0] = -a1ul;
- else if (state_ptr->a[0] > a1ul)
- state_ptr->a[0] = a1ul;
-
- /* UPB : update predictor zeros b[6] */
- for (cnt = 0; cnt < 6; cnt++) {
- if (code_size == 5) /* for 40Kbps G.723 */
- state_ptr->b[cnt] -= state_ptr->b[cnt] >> 9;
- else /* for G.721 and 24Kbps G.723 */
- state_ptr->b[cnt] -= state_ptr->b[cnt] >> 8;
- if (dq & 0x7FFF) { /* XOR */
- if ((dq ^ state_ptr->dq[cnt]) >= 0)
- state_ptr->b[cnt] += 128;
- else
- state_ptr->b[cnt] -= 128;
- }
- }
- }
-
- for (cnt = 5; cnt > 0; cnt--)
- state_ptr->dq[cnt] = state_ptr->dq[cnt-1];
- /* FLOAT A : convert dq[0] to 4-bit exp, 6-bit mantissa f.p. */
- if (mag == 0) {
- state_ptr->dq[0] = (dq >= 0) ? 0x20 : 0xFC20;
- } else {
- exp = quan(mag, power2, 15);
- state_ptr->dq[0] = (short)((dq >= 0) ?
- (exp << 6) + ((mag << 6) >> exp) :
- (exp << 6) + ((mag << 6) >> exp) - 0x400);
- }
-
- state_ptr->sr[1] = state_ptr->sr[0];
- /* FLOAT B : convert sr to 4-bit exp., 6-bit mantissa f.p. */
- if (sr == 0) {
- state_ptr->sr[0] = 0x20;
- } else if (sr > 0) {
- exp = quan(sr, power2, 15);
- state_ptr->sr[0] = (exp << 6) + ((sr << 6) >> exp);
- } else if (sr > -32768) {
- mag = -sr;
- exp = quan(mag, power2, 15);
- state_ptr->sr[0] = (exp << 6) + ((mag << 6) >> exp) - 0x400;
- } else
- state_ptr->sr[0] = 0xFC20;
-
- /* DELAY A */
- state_ptr->pk[1] = state_ptr->pk[0];
- state_ptr->pk[0] = pk0;
-
- /* TONE */
- if (tr == 1) /* this sample has been treated as data */
- state_ptr->td = 0; /* next one will be treated as voice */
- else if (a2p < -11776) /* small sample-to-sample correlation */
- state_ptr->td = 1; /* signal may be data */
- else /* signal is voice */
- state_ptr->td = 0;
-
- /*
- * Adaptation speed control.
- */
- state_ptr->dms += (fi - state_ptr->dms) >> 5; /* FILTA */
- state_ptr->dml += (((fi << 2) - state_ptr->dml) >> 7); /* FILTB */
-
- if (tr == 1)
- state_ptr->ap = 256;
- else if (y < 1536) /* SUBTC */
- state_ptr->ap += (0x200 - state_ptr->ap) >> 4;
- else if (state_ptr->td == 1)
- state_ptr->ap += (0x200 - state_ptr->ap) >> 4;
- else if (abs((state_ptr->dms << 2) - state_ptr->dml) >=
- (state_ptr->dml >> 3))
- state_ptr->ap += (0x200 - state_ptr->ap) >> 4;
- else
- state_ptr->ap += (-state_ptr->ap) >> 4;
-}
-
-/*
- * tandem_adjust(sr, se, y, i, sign)
- *
- * At the end of ADPCM decoding, it simulates an encoder which may be receiving
- * the output of this decoder as a tandem process. If the output of the
- * simulated encoder differs from the input to this decoder, the decoder output
- * is adjusted by one level of A-law or u-law codes.
- *
- * Input:
- * sr decoder output linear PCM sample,
- * se predictor estimate sample,
- * y quantizer step size,
- * i decoder input code,
- * sign sign bit of code i
- *
- * Return:
- * adjusted A-law or u-law compressed sample.
- */
-int
-tandem_adjust_alaw(
- int sr, /* decoder output linear PCM sample */
- int se, /* predictor estimate sample */
- int y, /* quantizer step size */
- int i, /* decoder input code */
- int sign,
- int * qtab)
-{
- int sp; /* A-law compressed 8-bit code */
- int dx; /* prediction error */
- int id; /* quantized prediction error */
- int sd; /* adjusted A-law decoded sample value */
- int im; /* biased magnitude of i */
- int imx; /* biased magnitude of id */
-
- if (sr <= -32768)
- sr = -1;
- sp = linear2alaw((sr >> 1) << 3); /* short to A-law compression */
- dx = (alaw2linear(sp) >> 2) - se; /* 16-bit prediction error */
- id = quantize(dx, y, qtab, sign - 1);
-
- if (id == i) { /* no adjustment on sp */
- return (sp);
- } else { /* sp adjustment needed */
- /* ADPCM codes : 8, 9, ... F, 0, 1, ... , 6, 7 */
- im = i ^ sign; /* 2's complement to biased unsigned */
- imx = id ^ sign;
-
- if (imx > im) { /* sp adjusted to next lower value */
- if (sp & 0x80) {
- sd = (sp == 0xD5) ? 0x55 :
- ((sp ^ 0x55) - 1) ^ 0x55;
- } else {
- sd = (sp == 0x2A) ? 0x2A :
- ((sp ^ 0x55) + 1) ^ 0x55;
- }
- } else { /* sp adjusted to next higher value */
- if (sp & 0x80)
- sd = (sp == 0xAA) ? 0xAA :
- ((sp ^ 0x55) + 1) ^ 0x55;
- else
- sd = (sp == 0x55) ? 0xD5 :
- ((sp ^ 0x55) - 1) ^ 0x55;
- }
- return (sd);
- }
-}
-
-int
-tandem_adjust_ulaw(
- int sr, /* decoder output linear PCM sample */
- int se, /* predictor estimate sample */
- int y, /* quantizer step size */
- int i, /* decoder input code */
- int sign,
- int * qtab)
-{
- int sp; /* u-law compressed 8-bit code */
- int dx; /* prediction error */
- int id; /* quantized prediction error */
- int sd; /* adjusted u-law decoded sample value */
- int im; /* biased magnitude of i */
- int imx; /* biased magnitude of id */
-
- if (sr <= -32768)
- sr = 0;
- sp = linear2ulaw(sr << 2); /* short to u-law compression */
- dx = (ulaw2linear(sp) >> 2) - se; /* 16-bit prediction error */
- id = quantize(dx, y, qtab, sign - 1);
- if (id == i) {
- return (sp);
- } else {
- /* ADPCM codes : 8, 9, ... F, 0, 1, ... , 6, 7 */
- im = i ^ sign; /* 2's complement to biased unsigned */
- imx = id ^ sign;
- if (imx > im) { /* sp adjusted to next lower value */
- if (sp & 0x80)
- sd = (sp == 0xFF) ? 0x7E : sp + 1;
- else
- sd = (sp == 0) ? 0 : sp - 1;
-
- } else { /* sp adjusted to next higher value */
- if (sp & 0x80)
- sd = (sp == 0x80) ? 0x80 : sp - 1;
- else
- sd = (sp == 0x7F) ? 0xFE : sp + 1;
- }
- return (sd);
- }
-}
-
-/* Allocate and Init. codec struct */
-
+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
-/*
- * g72x.h
- *
- * Header file for CCITT conversion routines.
- *
- */
-#ifndef _G72X_H
-#define _G72X_H
-
-#define AUDIO_ENCODING_ULAW (1) /* ISDN u-law */
-#define AUDIO_ENCODING_ALAW (2) /* ISDN A-law */
-#define AUDIO_ENCODING_LINEAR (3) /* PCM 2's-complement (0-center) */
-
-/*
- * The following is the definition of the state structure
- * used by the G.721/G.723 encoder and decoder to preserve their internal
- * state between successive calls. The meanings of the majority
- * of the state structure fields are explained in detail in the
- * CCITT Recommendation G.721. The field names are essentially indentical
- * to variable names in the bit level description of the coding algorithm
- * included in this Recommendation.
- */
-typedef struct g726_state_s {
- long yl; /* Locked or steady state step size multiplier. */
- int yu; /* Unlocked or non-steady state step size multiplier. */
- int dms; /* Short term energy estimate. */
- int dml; /* Long term energy estimate. */
- int ap; /* Linear weighting coefficient of 'yl' and 'yu'. */
-
- int a[2]; /* Coefficients of pole portion of prediction filter. */
- int b[6]; /* Coefficients of zero portion of prediction filter. */
- int pk[2]; /* Signs of previous two samples of a partially
- * reconstructed signal. */
- short dq[6];/* int here fails in newupdate on encode!
- * Previous 6 samples of the quantized difference
- * signal represented in an internal floating point
- * format.
- */
- int sr[2]; /* Previous 2 samples of the quantized difference
- * signal represented in an internal floating point
- * format. */
- int td; /* delayed tone detect, new in 1988 version */
-} g726_state;
-
-/* External function definitions. */
-
-void g726_init_state( g726_state *);
-
-int g726_32_encoder(
- int sample,
- int in_coding,
- g726_state *state_ptr);
-int g726_32_decoder(
- int code,
- int out_coding,
- g726_state *state_ptr);
-int g726_16_encoder(
- int sample,
- int in_coding,
- g726_state *state_ptr);
-int g726_16_decoder(
- int code,
- int out_coding,
- g726_state *state_ptr);
-int g726_24_encoder(
- int sample,
- int in_coding,
- g726_state *state_ptr);
-int g726_24_decoder(
- int code,
- int out_coding,
- g726_state *state_ptr);
-int g726_40_encoder(
- int sample,
- int in_coding,
- g726_state *state_ptr);
-int g726_40_decoder(
- int code,
- int out_coding,
- g726_state *state_ptr);
-
-#endif /* !_G72X_H */
-
+++ /dev/null
-/**
- *
- * $Log: private.h,v $
- * Revision 1.4 2002/11/20 04:29:13 robertj
- * Included optimisations for G.711 and G.726 codecs, thanks Ted Szoczei
- *
- * Revision 1.1 2002/02/11 23:24:23 robertj
- * Updated to openH323 v1.8.0
- *
- * Revision 1.2 2002/02/10 21:14:54 dereks
- * Add cvs log history to head of the file.
- * Ensure file is terminated by a newline.
- *
- *
- *
- */
-#if !defined G726_PRIVATE
-#define G726_PRIVATE
-
-int linear2ulaw(int pcm_val);
-int ulaw2linear(int u_val);
-int linear2alaw(int pcm_val);
-int alaw2linear(int u_val);
-
-static int fmult(int an, int srn);
-int predictor_zero( g726_state *state_ptr);
-int predictor_pole( g726_state *state_ptr);
-int step_size( g726_state *state_ptr);
-int quantize( int d, /* Raw difference signal sample */
- int y, /* Step size multiplier */
- int * table, /* quantization table */
- int size); /* table size of short integers */
-int reconstruct( int sign, /* 0 for non-negative value */
- int dqln, /* G.72x codeword */
- int y); /* Step size multiplier */
-void update( int code_size, /* distinguish 723_40 with others */
- int y, /* quantizer step size */
- int wi, /* scale factor multiplier */
- int fi, /* for long/short term energies */
- int dq, /* quantized prediction difference */
- int sr, /* reconstructed signal */
- int dqsez, /* difference from 2-pole predictor */
- g726_state *state_ptr); /* coder state pointer */
-int tandem_adjust_alaw(
- int sr, /* decoder output linear PCM sample */
- int se, /* predictor estimate sample */
- int y, /* quantizer step size */
- int i, /* decoder input code */
- int sign,
- int * qtab);
-int tandem_adjust_ulaw(
- int sr, /* decoder output linear PCM sample */
- int se, /* predictor estimate sample */
- int y, /* quantizer step size */
- int i, /* decoder input code */
- int sign,
- int * qtab);
-
-#endif // G726_PRIVATE
-
projects / thirdparty / freeswitch.git / commitdiff
