25 files changed, 4063 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/liba52/AUTHORS b/lib/rbcodec/codecs/liba52/AUTHORS
new file mode 100644
index 0000000000..a6bd695228
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/AUTHORS
@@ -0,0 +1,23 @@
+Aaron Holtzman <aholtzma@ess.engr.uvic.ca> started the project and
+made the initial working implementation.
+
+Michel Lespinasse <walken@zoy.org> did major changes for speed and
+conformance and is the current maintainer.
+
+Other contributors include:
+        Gildas Bazin <gbazin@netcourrier.com> - mingw32 port
+        Billy Biggs <vektor@div8.net> - most of liba52.txt
+        Jeroen Dobbelaere <jeroen.dobbelaere@acunia.com> - fixed point version
+        Eduard Hasenleithner <eduardh@aon.at> - gcc 3.0 fixes
+        Håkan Hjort <d95hjort@dtek.chalmers.se> - Solaris output, mlib code
+        Charles M. Hannum <root@ihack.net> - fixes
+        Chris Hodges <hodges@stradis.com> - made the library reentrant
+        Michael Holzt <kju@flummi.de> - OSS output.c and misc errata
+        Angelos Keromytis <angelos@dsl.cis.upenn.edu> - OpenBSD fixes
+        David I. Lehn <dlehn@vt.edu> - API cleanup suggestion
+        Don Mahurin <dmahurin@dma.org> - stdin support for extract_a52
+        Jim Miller <jmiller@heli.engr.sgi.com> - IRIX output.c
+        Takefumi Sayo <stake@niagara.shiojiri.ne.jp> - FreeBSD tweak
+        Shoji Tokunaga <toku@mac.com> - aif file output
+
+(let me know if I forgot anyone)
diff --git a/lib/rbcodec/codecs/liba52/COPYING b/lib/rbcodec/codecs/liba52/COPYING
new file mode 100644
index 0000000000..60549be514
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/COPYING
@@ -0,0 +1,340 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
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+Foundation's software and to any other program whose authors commit to
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+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
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+  The precise terms and conditions for copying, distribution and
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+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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+This section is intended to make thoroughly clear what is believed to
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+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
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+  To do so, attach the following notices to the program.  It is safest
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+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    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.
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+
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+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
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diff --git a/lib/rbcodec/codecs/liba52/ChangeLog b/lib/rbcodec/codecs/liba52/ChangeLog
new file mode 100644
index 0000000000..4adac364eb
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/ChangeLog
@@ -0,0 +1,97 @@
+a52dec-0.7.4 Sat Jul 27 20:44:00 PDT 2002
+-The library is now fully reentrant.
+-Added win32 output module, al file output, gain control.
+-A few additional portability enhancements.
+
+a52dec-0.7.3 Wed Feb 20 23:38:22 PST 2002
+-rewrite of the imdct code, making a52dec 40% to 80% faster than version 0.7.2
+-fixed one memory corruption problem in parse.c
+-small liba52 portability fixes
+-byte order and CRLF bugfixes in wav file output
+-aif file output
+-IRIX al sound output (untested, tell us if it works)
+
+a52dec-0.7.2 Sun Dec 16 14:39:56 PST 2001
+-demuxer improvements, with support for TS streams.
+-smaller demux buffer, making it easier to use a52dec as a pipe
+-wav output
+-avoid -fPIC when possible (-prefer-non-pic)
+-support for vc++ and TenDRA
+-portability fixes
+        
+a52dec-0.7.1b Fri Aug 31 02:37:23 PDT 2001
+-removed an #include <stdint.h> that was only breaking libc5 builds
+
+a52dec-0.7.1 Thu Aug 30 02:13:23 PDT 2001
+-gcc 3.0 fixes
+-mlib fixes (now passes the test suite)
+-in a52dec.c, made sample_data and flags static
+-removed a few statics in liba52/parse.c (still not reentrant, but closer)
+
+a52dec-0.7.0 Thu Aug 23 23:18:00 PDT 2001
+-Downmix to arbitrary speaker configurations
+-Dynamic range compression
+-Major speedups: 2x for 2.0 streams with 2.0 output,
+                 3x for 5.1 streams with 2.0 output.
+-New library interface
+-Rematrixing bugfix
+-Higher precision
+
+ac3dec-0.6.1 Mon Mar 27 20:27:06 EST 2000
+-Fix another 2.0 problem (rematrix was wrong).
+-Fix the never resync on a bad crc bug.
+
+ac3dec-0.6.0 Sat Mar 18 19:43:25 EST 2000
+-New library interface 
+-Fix bug wrt coupling channels that was causing sound quality problems. 
+-Fix 2.0 mode problems (aka the I forgot to implement the phase flags bug). 
+-All around speed improvements (almost twice as fast) 
+-Improved robustness when fed bad data. The entire frame is checksummed before playback.
+
+ac3dec-0.5.6 Tue Nov 16 00:37:34 EST 1999
+-Irix support 
+-Alpha fixes 
+-Minor performance enhancements to downmix and imdct
+-OpenBSD fixes 
+-extract_ac3 can now read from stdin
+-Change output_linux to block on write instead of using the
+ ring buffer. Let me know if this causes/fixes any problems
+
+ac3dec-0.5.5 Wed Aug 25 15:36:44 EDT 1999
+-Fixed a cut and paste bug (argh!) in parse.c which potentially 
+ screwed up delta bit allocation info.
+-Martin Mueller <mamueller@topmail.de> informed me that I was missing
+ some corrections from the AC-3 errata document. It turns out that 
+ I used an earlier version of the errata when I initially wrote ac3dec.
+ Fortunately the errata fix the outstanding bugs that I was pulling
+ my hair out on for a long time. Woohoo! Thanks Martin. Kudos to Dolby
+ Labs for keeping their documentation up to date as well.
+-stereo downmixing (downmix.c) is now in. Matrix encoded surround 
+ (Dolby Prologic Surround) should work too.
+-clipping due to high level signals has been fixed. We normalize a
+ block of samples by its maximum absolute value if the max exceeds 
+ the %100 digital level. This shouldn't be a problem, but for some 
+ reason some channels have a dynamic range that exceeds [-1.0,1.0].
+ I blame the encoder :)
+-Multiple track support in extract_ac3. Simply just give it the track
+ number you want [1,8] after the filename.
+
+ac3dec-0.5.4 Thu Jul 29 16:55:10 PDT 1999
+-Fixed a stupid bug with the coupling channel that was causing
+ high frequencies to be attenuated.
+-Re-wrote the extract_ac3 tool.
+-Added to a tool to verify the checksums on a given AC3 stream. 
+ (tools/verify_ac3)
+
+ac3dec-0.5.3  Mon Jul 12 10:45:56 PDT 1999
+-Fixed problems related to streams with coupling channel enabled.
+-Minor performance enhancements
+
+ac3dec-0.5.2  Sun Jul  4 12:00:25 PDT 1999
+-output_linux.c patch provided by Michael Holzt <kju@flummi.de>
+
+ac3dec-0.5.1  Wed Jun 30 17:48:52 PDT 1999
+-Compiles and dies gracefully under Linux now.
+
+ac3dec-0.5.0  Wed Jun 23 11:06:06 EDT 1999
+-First public release of ac3dec.
diff --git a/lib/rbcodec/codecs/liba52/HISTORY b/lib/rbcodec/codecs/liba52/HISTORY
new file mode 100644
index 0000000000..c2b9d02ee1
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/HISTORY
@@ -0,0 +1,28 @@
+changes that affected the PCM output:
+
+2001/05/14 05:48:59 - aaron's 0.6.1 was cutting before the end
+
+2001/06/04 01:42:47 - slightly adjusted some values (volume, downmix adjustemtn, clev/slev tables)
+2001/06/04 05:48:31 - added adjust_level to the downmix
+
+2001/06/12
+2001/06/13          - changed the order of the dither() calls
+                      also introduced bug with thx_2_0 stream
+
+2001/06/22 08:23:37 - fixed bug with thx_2_0 stream (see parse.c)
+
+2001/07/02 08:44:55 - changed float-to-int conversion (+ added saturation)
+
+2001/07/06 06:53:01 - more precise imdct init, more precise q_* coefficients
+
+2001/07/06 08:52:30 - rematrixing fixes
+
+2001/07/26 21:31:39 - do 3dB dither reduction in coeff_get() not dither_gen()
+
+2001/08/09 08:11:31 - implemented dynamic range compression
+
+2002/02/24 08:54:49 - window function computed at runtime, with more precision
+
+2003/01/28 06.57:37 - switched to integer q_* coefficients
+
+2003/01/28 07:39:35 - use level of 0.75 for dithering instead of 0.707
diff --git a/lib/rbcodec/codecs/liba52/INSTALL b/lib/rbcodec/codecs/liba52/INSTALL
new file mode 100644
index 0000000000..30a07fecff
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/INSTALL
@@ -0,0 +1,58 @@
+Unix build instructions
+-----------------------
+
+./configure
+make
+make install
+
+If you install from CVS you'll have to run ./bootstrap first
+
+
+Building for win32
+------------------
+
+There are at least three ways to do it:
+
+- natively on Windows using Microsoft VC++ and the vc++ project
+  included in this distribution.
+
+- natively on Windows using MSYS + MINGW (www.mingw.org) (MSYS is a
+  minimal build environnement to compile unixish projects under
+  windows. It provides all the common unix tools like sh, gmake...)
+
+- or on Linux, using the mingw32 cross-compiler
+
+
+Building using MSYS + MINGW on windows
+--------------------------------------
+
+First you will need to download and install the latest MSYS (version
+1.0.7 as of now) and MINGW. The installation is really easy. Begin
+with the MSYS auto-installer and once this is done, extract MINGW into
+c:\msys\1.0\mingw. You also have to remember to remove the make
+utility included with MINGW as it conflicts with the one from MSYS
+(just rename or remove c:\msys\1.0\mingw\bin\make.exe).
+
+http://prdownloads.sourceforge.net/mingw/MSYS-1.0.7-i686-2002.04.24-1.exe
+http://prdownloads.sourceforge.net/mingw/MinGW-1.1.tar.gz
+
+Then you can build the package using:
+# ./configure
+# make
+
+
+Building using the mingw32 cross-compiler
+-----------------------------------------
+
+You need to install mingw32 first. For Debian GNU/Linux users, there
+is a mingw32 package. Otherwise you might get it from the mingw site
+at http://www.mingw.org/download.shtml.
+
+The videolan project also keeps precompiled mingw32 binaries at
+http://www.videolan.org/vlc/windows.html . If you install these,
+you'll have to set your PATH accordingly to include
+/usr/local/cross-tools/bin too.
+
+The build should then proceed using something like:
+# CC=i586-mingw32msvc-gcc ./configure --host=i586-mingw32msvc
+# make
diff --git a/lib/rbcodec/codecs/liba52/NEWS b/lib/rbcodec/codecs/liba52/NEWS
new file mode 100644
index 0000000000..4bee9cac8d
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/NEWS
@@ -0,0 +1,46 @@
+a52dec-0.7.4 Sat Jul 27 20:44:00 PDT 2002
+
+The library is now fully reentrant.
+
+Added win32 output module, al file output, gain control.
+
+A few additional portability enhancements.
+
+
+a52dec-0.7.3 Wed Feb 20 23:38:22 PST 2002 
+
+Performance enhancements, from 40% to 80% depending on streams.
+
+Fixed a few embarassing bugs in liba52: one memory corruption issue
+and a few minor portability problems.
+
+Several new output modules, and fixes in the existing .wav file output.
+
+
+a52dec-0.7.2 Sun Dec 16 14:39:56 PST 2001
+
+Minor bugfixes, performance and portability enhancements.
+
+Also added wav format output, and reduced the demux buffer size which
+makes it easier to use a52dec as a pipe.
+
+
+a52dec-0.7.1 Thu Aug 30 02:13:23 PDT 2001
+
+Minor release for bugfixes. Looks like 0.7.0 was a bit rushed out.
+
+Now compiles with gcc 3.0, made sure mlib implementation works, and
+fixed a small bug in the a52dec test program.
+
+
+a52dec-0.7.0 Thu Aug 23 23:18:00 PDT 2001 
+
+First release since more than one year !
+
+The most user-noticeable additions are the downmix to arbitrary
+speaker configurations, and the implementation of dynamic range
+compression.
+
+The speed has been improved by a factor of 2 to 3, the conformance and
+precision should be higher, and we also fixed a small bug when playing
+stereo rematrixed streams.
diff --git a/lib/rbcodec/codecs/liba52/README b/lib/rbcodec/codecs/liba52/README
new file mode 100644
index 0000000000..eb6c64df84
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/README
@@ -0,0 +1,180 @@
+
+
+ABOUT LIBA52
+
+liba52 is a free library for decoding ATSC A/52 streams. It is
+released under the terms of the GPL license. The A/52 standard is used
+in a variety of applications, including digital television and DVD. It
+is also known as AC-3.
+
+The main goals in liba52 development are:
+
+      * Portability - Currently all of the code is written in C, and
+        when we write platform-specific optimizations we will always
+        keep a generic C routine to fall back on.
+
+      * Reuseability - we do not want liba52 to include any
+        project-specific code, but it should still include enough
+        features to be used by very diverse projects.
+
+      * Precision - We are trying to implement all of the A/52
+        standard, and to have a very precise output by doing all the
+        calculations in floating point. We have a test suite that
+        detects any deviation in the output when compared to previous
+        versions. We do not have access to official A/52 test vectors
+        though, so we have to use our judgement to ensure that such
+        deviations are only intruduced when we fix bugs !
+
+      * Speed - liba52 is really fast, on any modern PC it should take
+        only a few percent of CPU time.
+
+The project homepage is at http://liba52.sourceforge.net/
+
+
+A52DEC
+
+a52dec is a test program for liba52. It decodes ATSC A/52 streams, and
+also includes a demultiplexer for mpeg-1 and mpeg-2 program streams.
+
+The liba52 source code is always distributed in the a52dec package, to
+make sure it easier for people to test it.
+
+The basic usage is to just type "a52dec file" where file is an ATSC
+A/52 file.
+
+The "-s" option must be used for multiplexed (audio and video) mpeg-2
+files. These files are usualy found on the internet or on unencrypted
+DVDs.
+
+The "-o" option is used to select a given output layer. By default
+a52dec does a stereo downmix and outputs to your speakers, but you can
+try other choices using this option. This is also used for performance
+testing and conformance testing.
+
+The "-c" option is used to disable all optimizations (currently only djbfft).
+
+The "-r" option is used to disable the dynamic range compression.
+
+
+OTHER PROJECTS USING LIBA52
+
+liba52 (and its ancestor libac3) is being used by various other
+projects, including:
+
+      * xine (http://xine.sourceforge.net/) - started as a simple
+        mpeg-2 audio and video decoder, but it since became a
+        full-featured DVD and video media player.
+
+      * VideoLAN (http://www.videolan.org/) - video streaming over an
+        ethernet network, can also be used as a standalone player.
+
+      * MPlayer (http://www.MPlayerHQ.hu) - another good player, it is
+        also very robust against damaged streams.
+
+      * movietime (http://movietime.sourceforge.net/) - still quite
+        young, but it looks very promising !
+
+      * ffmpeg (http://ffmpeg.sourceforge.net/) - a nice audio/video
+        encoder and transcoder, uses liba52 for decoding A/52 streams.
+
+      * Ogle (http://www.dtek.chalmers.se/groups/dvd/) - a good DVD
+        player with menu support
+
+      * a52decX (http://homepage1.nifty.com/~toku/software_en.html) -
+        a graphical interface for a52dec in macintosh osX.
+
+      * TCVP (http://tcvp.sf.net) - video and music player for unix.
+
+      * bd4go (http://denisx.dyndns.org/bd4go/) - another graphical
+        interface for macintosh osX.
+
+      * drip (http://drip.sourceforge.net/) - a DVD to DIVX transcoder.
+
+      * OMS (http://www.linuxvideo.org/oms/)
+
+      * XMPS (http://xmps.sourceforge.net/)
+
+      * GStreamer (http://www.gstreamer.net/) - a framework for
+        streaming media; it has an A/52 decoding plugin based on liba52.
+
+      * mpeglib (http://mpeglib.sourceforge.net/) - a video decoding
+        library that usess liba52 when decoding A/52 streams.
+
+If you use liba52 in another project, let us know !
+
+
+TASKS
+
+There are several places where we could easily use some help:
+
+      * Web design: This site sucks ! at the very least, we'd like to
+        come up with a nicer background picture and a logo.
+
+      * Testing: If you find any stream that does not decode right
+        with liba52, let us know ! The best thing would be to mail to
+        the liba52-devel mailing list. Also if you have access to
+        encoders, we'd love to get test streams that would be free of
+        rights - so that we can put them on this server.
+
+      * Coding: you can have a look in the TODO file first ! The most
+        important item is probably to make the code fully reentrant.
+
+      * Porting: If you're porting to a new architecture, you might
+        want to experiment with the compile flags defined in
+        configure.in . When you figure out whats fastest on your
+        platform, send us a patch !
+
+
+REFERENCES
+
+The A/52 standard, as published by the ATSC, is available at
+http://www.atsc.org/standards/a_52a.pdf
+
+
+CVS SNAPSHOTS
+
+A daily snapshot is created using "make distcheck" every night and
+uploaded to http://liba52.sourceforge.net/files/a52dec-snapshot.tar.gz .
+It is easier to use than the CVS repository, because you do not need
+to have the right versions of automake, autoconf and libtool
+installed. It might be convenient when working on a liba52 port for
+example.
+
+
+CVS REPOSITORY
+
+The latest liba52 and a52dec source code can always be found by
+anonymous CVS:
+
+# export CVSROOT=:pserver:anonymous@cvs.liba52.sourceforge.net:/cvsroot/liba52
+# cvs login (Just press Return when prompted for a password)
+# cvs checkout a52dec
+
+You can also browse the latest changes online at
+http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/liba52/a52dec/
+
+The other CVS modules are ac3dec-livid for the CVS history of the
+project while it was still hosted on the linuxvideo.org servers, and
+ac3dec for the CVS history of the project while the linuxvideo.org
+servers were down and before the library switched its name to liba52.
+
+
+MAILING LISTS
+
+See the subscription information at http://liba52.sourceforge.net/lists.html
+
+liba52-devel
+
+This is the main mailing list for technical discussion about
+liba52. Anyone wanting to work on liba52, or maybe just stay informed
+about the development process, should probably subscribe to this list.
+
+liba52-checkins
+
+All liba52 checkins are announced there. This is a good way to keep
+track of what goes into CVS.
+
+liba52-announce
+
+This is a very low traffic mailing list, only for announcements of new
+versions of liba52. Only project administrators can post there.
diff --git a/lib/rbcodec/codecs/liba52/README.rockbox b/lib/rbcodec/codecs/liba52/README.rockbox
new file mode 100644
index 0000000000..79768c5d72
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/README.rockbox
@@ -0,0 +1,27 @@
+Library: liba52-0.7.5 (CVS version 2005-02-16)
+Imported: 2005-02-16 by Dave Chapman
+
+
+This directory contains a local version of liba52 for decoding ATSC
+A/52 (aka AC-3) audio streams.  A/52 is commonly used in digital TV and
+on DVDs.
+
+LICENSING INFORMATION
+
+liba52 is released under the GNU General Public License as described
+in the COPYING file in this directory.
+
+
+IMPORT DETAILS
+
+The base version first imported into Rockbox was the CVS version of
+liba52-0.7.5 (0.7.4 was at the time the latest official) which was 
+checked out of sourceforge on 2005-02-16.
+
+The .[ch] files from a52dec/liba52/ and a52dec/include/ as well as the
+documentation files in a52dec/ were imported into Rockbox.  The other
+files in the archive relate to the test player (a52dec) and were not
+imported.
+
+A simple config.h file was added to enable liba52's fixed-point
+integer-only mode and to specify the endianness of the target CPU.
diff --git a/lib/rbcodec/codecs/liba52/SOURCES b/lib/rbcodec/codecs/liba52/SOURCES
new file mode 100644
index 0000000000..733b95e8a6
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/SOURCES
@@ -0,0 +1,5 @@
+bit_allocate.c
+bitstream.c
+downmix.c
+imdct.c
+parse.c
diff --git a/lib/rbcodec/codecs/liba52/TODO b/lib/rbcodec/codecs/liba52/TODO
new file mode 100644
index 0000000000..dc5fb84203
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/TODO
@@ -0,0 +1,17 @@
+* look at possible overflow/precision issues in integer port
+
+* redo all bit allocation if previous frame had zero_snr_offsets
+* make dynrng work in dual-channel streams
+
+* implement A/52a downmix extensions
+* reduce size of delay buffer by 50%
+* include float->s16 conversion in liba52 API ?
+* include up/downsampling 44100<->48000 in liba52 API ?
+* include audio dithering in liba52 API ?
+* API extensions might be at a different level (base vs. extended)
+
+* use restrict pointers where appropriate
+* avoid overflows, including reading the a52 stream !!!
+* faster bitstream parsing ?
+* make dither code faster (generate dither table in advance ?)
+* SIMD optimizations
diff --git a/lib/rbcodec/codecs/liba52/a52.h b/lib/rbcodec/codecs/liba52/a52.h
new file mode 100644
index 0000000000..e852e8d6bb
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/a52.h
@@ -0,0 +1,67 @@
+/*
+ * a52.h
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef A52_H
+#define A52_H
+
+#if defined(LIBA52_FIXED)
+typedef int32_t sample_t;
+typedef int32_t level_t;
+#elif defined(LIBA52_DOUBLE)
+typedef double sample_t;
+typedef double level_t;
+#else
+typedef float sample_t;
+typedef float level_t;
+#endif
+
+typedef struct a52_state_s a52_state_t;
+
+#define A52_CHANNEL 0
+#define A52_MONO 1
+#define A52_STEREO 2
+#define A52_3F 3
+#define A52_2F1R 4
+#define A52_3F1R 5
+#define A52_2F2R 6
+#define A52_3F2R 7
+#define A52_CHANNEL1 8
+#define A52_CHANNEL2 9
+#define A52_DOLBY 10
+#define A52_CHANNEL_MASK 15
+
+#define A52_LFE 16
+#define A52_ADJUST_LEVEL 32
+
+a52_state_t * a52_init (uint32_t mm_accel);
+sample_t * a52_samples (a52_state_t * state);
+int a52_syncinfo (uint8_t * buf, int * flags,
+                  int * sample_rate, int * bit_rate);
+int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
+               level_t * level, sample_t bias);
+void a52_dynrng (a52_state_t * state,
+                 level_t (* call) (level_t, void *), void * data);
+int a52_block (a52_state_t * state);
+void a52_free (a52_state_t * state);
+
+#endif /* A52_H */
diff --git a/lib/rbcodec/codecs/liba52/a52_internal.h b/lib/rbcodec/codecs/liba52/a52_internal.h
new file mode 100644
index 0000000000..3b3d21c9a3
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/a52_internal.h
@@ -0,0 +1,215 @@
+/*
+ * a52_internal.h
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+typedef struct {
+    uint8_t bai;                /* fine SNR offset, fast gain */
+    uint8_t deltbae;            /* delta bit allocation exists */
+    int8_t deltba[50];          /* per-band delta bit allocation */
+} ba_t;
+
+typedef struct {
+    uint8_t exp[256];           /* decoded channel exponents */
+    int8_t bap[256];            /* derived channel bit allocation */
+} expbap_t;
+
+struct a52_state_s {
+    uint8_t fscod;              /* sample rate */
+    uint8_t halfrate;           /* halfrate factor */
+    uint8_t acmod;              /* coded channels */
+    uint8_t lfeon;              /* coded lfe channel */
+    level_t clev;               /* centre channel mix level */
+    level_t slev;               /* surround channels mix level */
+
+    int output;                 /* type of output */
+    level_t level;              /* output level */
+    sample_t bias;              /* output bias */
+
+    int dynrnge;                /* apply dynamic range */
+    level_t dynrng;             /* dynamic range */
+    void * dynrngdata;          /* dynamic range callback funtion and data */
+    level_t (* dynrngcall) (level_t range, void * dynrngdata);
+
+    uint8_t chincpl;            /* channel coupled */
+    uint8_t phsflginu;          /* phase flags in use (stereo only) */
+    uint8_t cplstrtmant;        /* coupling channel start mantissa */
+    uint8_t cplendmant;         /* coupling channel end mantissa */
+    uint32_t cplbndstrc;        /* coupling band structure */
+    level_t cplco[5][18];       /* coupling coordinates */
+
+    /* derived information */
+    uint8_t cplstrtbnd;         /* coupling start band (for bit allocation) */
+    uint8_t ncplbnd;            /* number of coupling bands */
+
+    uint8_t rematflg;           /* stereo rematrixing */
+
+    uint8_t endmant[5];         /* channel end mantissa */
+
+    uint16_t bai;               /* bit allocation information */
+
+    uint32_t * buffer_start;
+    uint16_t lfsr_state;        /* dither state */
+    uint32_t bits_left;
+    uint32_t current_word;
+
+    uint8_t csnroffst;          /* coarse SNR offset */
+    ba_t cplba;                 /* coupling bit allocation parameters */
+    ba_t ba[5];                 /* channel bit allocation parameters */
+    ba_t lfeba;                 /* lfe bit allocation parameters */
+
+    uint8_t cplfleak;           /* coupling fast leak init */
+    uint8_t cplsleak;           /* coupling slow leak init */
+
+    expbap_t cpl_expbap;
+    expbap_t fbw_expbap[5];
+    expbap_t lfe_expbap;
+
+    sample_t * samples;
+    int downmixed;
+};
+
+#define LEVEL_PLUS6DB 2.0
+#define LEVEL_PLUS3DB 1.4142135623730951
+#define LEVEL_3DB 0.7071067811865476
+#define LEVEL_45DB 0.5946035575013605
+#define LEVEL_6DB 0.5
+
+#define EXP_REUSE (0)
+#define EXP_D15   (1)
+#define EXP_D25   (2)
+#define EXP_D45   (3)
+
+#define DELTA_BIT_REUSE (0)
+#define DELTA_BIT_NEW (1)
+#define DELTA_BIT_NONE (2)
+#define DELTA_BIT_RESERVED (3)
+
+void a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
+                       int start, int end, int fastleak, int slowleak,
+                       expbap_t * expbap);
+
+int a52_downmix_init (int input, int flags, level_t * level,
+                      level_t clev, level_t slev);
+int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level,
+                       level_t clev, level_t slev);
+void a52_downmix (sample_t * samples, int acmod, int output, 
+                  level_t clev, level_t slev);
+void a52_upmix (sample_t * samples, int acmod, int output);
+
+void a52_imdct_init (uint32_t mm_accel);
+void a52_imdct_256 (sample_t * data, sample_t * delay);
+void a52_imdct_512 (sample_t * data, sample_t * delay);
+
+#define ROUND(x) ((int)((x) + ((x) > 0 ? 0.5 : -0.5)))
+
+#ifndef LIBA52_FIXED
+
+typedef sample_t quantizer_t;
+#define SAMPLE(x) (x)
+#define LEVEL(x) (x)
+#define MUL(a,b) ((a) * (b))
+#define MUL_L(a,b) ((a) * (b))
+#define MUL_C(a,b) ((a) * (b))
+#define DIV(a,b) ((a) / (b))
+#define BIAS(x) ((x) + bias)
+
+#else /* LIBA52_FIXED */
+
+typedef int16_t quantizer_t;
+#define SAMPLE(x) (sample_t)((x) * (1 << 30))
+#define LEVEL(x) (level_t)((x) * (1 << 26))
+
+#if 0
+#define MUL(a,b) ((int)(((int64_t)(a) * (b) + (1 << 29)) >> 30))
+#define MUL_L(a,b) ((int)(((int64_t)(a) * (b) + (1 << 25)) >> 26))
+#elif defined(CPU_COLDFIRE)
+/* loses 1 bit of accuracy */
+#define MUL(a, b) \
+({ \
+    int32_t t; \
+    asm volatile ( \
+        "mac.l %[A], %[B], %%acc0\n\t" \
+        "movclr.l %%acc0, %[t]\n\t" \
+        "asl.l #1, %[t]" \
+        : [t] "=d" (t) \
+        : [A] "r" ((a)), [B] "r" ((b))); \
+    t; \
+})
+/* loses 5 bits of accuracy */
+#define MUL_L(a, b) \
+({ \
+    int32_t t; \
+    asm volatile ( \
+        "mac.l %[A], %[B], %%acc0\n\t" \
+        "movclr.l %%acc0, %[t]\n\t" \
+        "asl.l #5, %[t]" \
+        : [t] "=d" (t) \
+        : [A] "r" ((a)), [B] "r" ((b))); \
+    t; \
+})
+
+#elif defined(CPU_ARM)
+#define MUL(x, y)  \
+    ({ int32_t __hi;  \
+       uint32_t __lo;  \
+       int32_t __result;  \
+       asm ("smull   %0, %1, %3, %4\n\t"  \
+            "movs    %2, %1, lsl #2"  \
+            : "=&r" (__lo), "=&r" (__hi), "=r" (__result)  \
+            : "%r" (x), "r" (y)  \
+            : "cc");  \
+       __result;  \
+    })
+
+
+#define MUL_L(x, y)  \
+    ({ int32_t __hi;  \
+       uint32_t __lo;  \
+       int32_t __result;  \
+       asm ("smull   %0, %1, %3, %4\n\t"  \
+            "movs    %0, %0, lsr %5\n\t"  \
+            "adc    %2, %0, %1, lsl %6"  \
+            : "=&r" (__lo), "=&r" (__hi), "=r" (__result)  \
+            : "%r" (x), "r" (y),  \
+              "M" (26), "M" (32 - 26)  \
+            : "cc");  \
+       __result;  \
+    })
+    
+
+#elif 1
+#define MUL(a,b) \
+({ int32_t _ta=(a), _tb=(b), _tc; \
+   _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)(((_tc >> 14))+ (((_ta >> 16)*(_tb >> 16)) << 2 )); })
+#define MUL_L(a,b) \
+({ int32_t _ta=(a), _tb=(b), _tc; \
+   _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)((_tc >> 10) + (((_ta >> 16)*(_tb >> 16)) << 6)); })
+#else
+#define MUL(a,b) (((a) >> 15) * ((b) >> 15))
+#define MUL_L(a,b) (((a) >> 13) * ((b) >> 13))
+#endif
+
+#define MUL_C(a,b) MUL_L (a, LEVEL (b))
+#define DIV(a,b) ((((int64_t)LEVEL (a)) << 26) / (b))
+#define BIAS(x) ((x))
+
+#endif
diff --git a/lib/rbcodec/codecs/liba52/attributes.h b/lib/rbcodec/codecs/liba52/attributes.h
new file mode 100644
index 0000000000..988abc0311
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/attributes.h
@@ -0,0 +1,37 @@
+/*
+ * attributes.h
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* use gcc attribs to align critical data structures */
+#ifdef ATTRIBUTE_ALIGNED_MAX
+#define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
+#else
+#define ATTR_ALIGN(align)
+#endif
+
+#ifdef HAVE_BUILTIN_EXPECT
+#define likely(x) __builtin_expect ((x) != 0, 1)
+#define unlikely(x) __builtin_expect ((x) != 0, 0)
+#else
+#define likely(x) (x)
+#define unlikely(x) (x)
+#endif
diff --git a/lib/rbcodec/codecs/liba52/bit_allocate.c b/lib/rbcodec/codecs/liba52/bit_allocate.c
new file mode 100644
index 0000000000..aaac245913
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/bit_allocate.c
@@ -0,0 +1,265 @@
+/*
+ * bit_allocate.c
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config-a52.h"
+
+#include <inttypes.h>
+
+#include "a52.h"
+#include "a52_internal.h"
+
+static int hthtab[3][50] IDATA_ATTR = {
+    {0x730, 0x730, 0x7c0, 0x800, 0x820, 0x840, 0x850, 0x850, 0x860, 0x860,
+     0x860, 0x860, 0x860, 0x870, 0x870, 0x870, 0x880, 0x880, 0x890, 0x890,
+     0x8a0, 0x8a0, 0x8b0, 0x8b0, 0x8c0, 0x8c0, 0x8d0, 0x8e0, 0x8f0, 0x900,
+     0x910, 0x910, 0x910, 0x910, 0x900, 0x8f0, 0x8c0, 0x870, 0x820, 0x7e0,
+     0x7a0, 0x770, 0x760, 0x7a0, 0x7c0, 0x7c0, 0x6e0, 0x400, 0x3c0, 0x3c0},
+    {0x710, 0x710, 0x7a0, 0x7f0, 0x820, 0x830, 0x840, 0x850, 0x850, 0x860,
+     0x860, 0x860, 0x860, 0x860, 0x870, 0x870, 0x870, 0x880, 0x880, 0x880,
+     0x890, 0x890, 0x8a0, 0x8a0, 0x8b0, 0x8b0, 0x8c0, 0x8c0, 0x8e0, 0x8f0,
+     0x900, 0x910, 0x910, 0x910, 0x910, 0x900, 0x8e0, 0x8b0, 0x870, 0x820,
+     0x7e0, 0x7b0, 0x760, 0x770, 0x7a0, 0x7c0, 0x780, 0x5d0, 0x3c0, 0x3c0},
+    {0x680, 0x680, 0x750, 0x7b0, 0x7e0, 0x810, 0x820, 0x830, 0x840, 0x850,
+     0x850, 0x850, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860, 0x860,
+     0x870, 0x870, 0x870, 0x870, 0x880, 0x880, 0x880, 0x890, 0x8a0, 0x8b0,
+     0x8c0, 0x8d0, 0x8e0, 0x8f0, 0x900, 0x910, 0x910, 0x910, 0x900, 0x8f0,
+     0x8d0, 0x8b0, 0x840, 0x7f0, 0x790, 0x760, 0x7a0, 0x7c0, 0x7b0, 0x720}
+};
+
+static int8_t baptab[305] IDATA_ATTR = {
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, /* 93 padding elems */
+
+    16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14,
+    14, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10,  9,  9,  9,
+     9,  8,  8,  8,  8,  7,  7,  7,  7,  6,  6,  6,  6,  5,  5,  5,
+     5,  4,  4, -3, -3,  3,  3,  3, -2, -2, -1, -1, -1, -1, -1,  0,
+
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+     0,  0,  0,  0                                      /* 148 padding elems */
+};
+
+static int bndtab[30] IDATA_ATTR = {21, 22,  23,  24,  25,  26,  27,  28,  31,  34,
+                         37, 40,  43,  46,  49,  55,  61,  67,  73,  79,
+                         85, 97, 109, 121, 133, 157, 181, 205, 229, 253};
+
+static int8_t latab[256] IDATA_ATTR = {
+    -64, -63, -62, -61, -60, -59, -58, -57, -56, -55, -54, -53,
+    -52, -52, -51, -50, -49, -48, -47, -47, -46, -45, -44, -44,
+    -43, -42, -41, -41, -40, -39, -38, -38, -37, -36, -36, -35,
+    -35, -34, -33, -33, -32, -32, -31, -30, -30, -29, -29, -28,
+    -28, -27, -27, -26, -26, -25, -25, -24, -24, -23, -23, -22,
+    -22, -21, -21, -21, -20, -20, -19, -19, -19, -18, -18, -18,
+    -17, -17, -17, -16, -16, -16, -15, -15, -15, -14, -14, -14,
+    -13, -13, -13, -13, -12, -12, -12, -12, -11, -11, -11, -11,
+    -10, -10, -10, -10, -10,  -9,  -9,  -9,  -9,  -9,  -8,  -8,
+     -8,  -8,  -8,  -8,  -7,  -7,  -7,  -7,  -7,  -7,  -6,  -6,
+     -6,  -6,  -6,  -6,  -6,  -6,  -5,  -5,  -5,  -5,  -5,  -5,
+     -5,  -5,  -4,  -4,  -4,  -4,  -4,  -4,  -4,  -4,  -4,  -4,
+     -4,  -3,  -3,  -3,  -3,  -3,  -3,  -3,  -3,  -3,  -3,  -3,
+     -3,  -3,  -3,  -2,  -2,  -2,  -2,  -2,  -2,  -2,  -2,  -2,
+     -2,  -2,  -2,  -2,  -2,  -2,  -2,  -2,  -2,  -2,  -1,  -1,
+     -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+     -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,  -1,
+     -1,  -1,  -1,  -1,  -1,  -1,   0,   0,   0,   0,   0,   0,
+      0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+      0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+      0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+      0,   0,   0,   0
+};
+
+#define UPDATE_LEAK()           \
+do {                            \
+    fastleak += fdecay;         \
+    if (fastleak > psd + fgain) \
+        fastleak = psd + fgain; \
+    slowleak += sdecay;         \
+    if (slowleak > psd + sgain) \
+        slowleak = psd + sgain; \
+} while (0)
+
+#define COMPUTE_MASK()                          \
+do {                                            \
+    if (psd > dbknee)                           \
+        mask -= (psd - dbknee) >> 2;            \
+    if (mask > hth [i >> halfrate])             \
+        mask = hth [i >> halfrate];             \
+    mask -= snroffset + 128 * deltba[i];        \
+    mask = (mask > 0) ? 0 : ((-mask) >> 5);     \
+    mask -= floor;                              \
+} while (0)
+
+void a52_bit_allocate (a52_state_t * state, ba_t * ba, int bndstart,
+                       int start, int end, int fastleak, int slowleak,
+                       expbap_t * expbap)
+{
+    static int slowgain[4] = {0x540, 0x4d8, 0x478, 0x410};
+    static int dbpbtab[4]  = {0xc00, 0x500, 0x300, 0x100};
+    static int floortab[8] = {0x910, 0x950, 0x990, 0x9d0,
+                              0xa10, 0xa90, 0xb10, 0x1400};
+
+    int i, j;
+    uint8_t * exp;
+    int8_t * bap;
+    int fdecay, fgain, sdecay, sgain, dbknee, floor, snroffset;
+    int psd, mask;
+    int8_t * deltba;
+    int * hth;
+    int halfrate;
+
+    halfrate = state->halfrate;
+    fdecay = (63 + 20 * ((state->bai >> 7) & 3)) >> halfrate;   /* fdcycod */
+    fgain = 128 + 128 * (ba->bai & 7);                          /* fgaincod */
+    sdecay = (15 + 2 * (state->bai >> 9)) >> halfrate;          /* sdcycod */
+    sgain = slowgain[(state->bai >> 5) & 3];                    /* sgaincod */
+    dbknee = dbpbtab[(state->bai >> 3) & 3];                    /* dbpbcod */
+    hth = hthtab[state->fscod];
+    /*
+     * if there is no delta bit allocation, make deltba point to an area
+     * known to contain zeroes. baptab+156 here.
+     */
+    deltba = (ba->deltbae == DELTA_BIT_NONE) ? baptab + 156 : ba->deltba;
+    floor = floortab[state->bai & 7];                           /* floorcod */
+    snroffset = 960 - 64 * state->csnroffst - 4 * (ba->bai >> 3) + floor;
+    floor >>= 5;
+
+    exp = expbap->exp;
+    bap = expbap->bap;
+
+    i = bndstart;
+    j = start;
+    if (start == 0) {   /* not the coupling channel */
+        int lowcomp;
+
+        lowcomp = 0;
+        j = end - 1;
+        do {
+            if (i < j) {
+                if (exp[i+1] == exp[i] - 2)
+                    lowcomp = 384;
+                else if (lowcomp && (exp[i+1] > exp[i]))
+                    lowcomp -= 64;
+            }
+            psd = 128 * exp[i];
+            mask = psd + fgain + lowcomp;
+            COMPUTE_MASK ();
+            bap[i] = (baptab+156)[mask + 4 * exp[i]];
+            i++;
+        } while ((i < 3) || ((i < 7) && (exp[i] > exp[i-1])));
+        fastleak = psd + fgain;
+        slowleak = psd + sgain;
+
+        while (i < 7) {
+            if (i < j) {
+                if (exp[i+1] == exp[i] - 2)
+                    lowcomp = 384;
+                else if (lowcomp && (exp[i+1] > exp[i]))
+                    lowcomp -= 64;
+            }
+            psd = 128 * exp[i];
+            UPDATE_LEAK ();
+            mask = ((fastleak + lowcomp < slowleak) ?
+                    fastleak + lowcomp : slowleak);
+            COMPUTE_MASK ();
+            bap[i] = (baptab+156)[mask + 4 * exp[i]];
+            i++;
+        }
+
+        if (end == 7)   /* lfe channel */
+            return;
+
+        do {
+            if (exp[i+1] == exp[i] - 2)
+                lowcomp = 320;
+            else if (lowcomp && (exp[i+1] > exp[i]))
+                lowcomp -= 64;
+            psd = 128 * exp[i];
+            UPDATE_LEAK ();
+            mask = ((fastleak + lowcomp < slowleak) ?
+                    fastleak + lowcomp : slowleak);
+            COMPUTE_MASK ();
+            bap[i] = (baptab+156)[mask + 4 * exp[i]];
+            i++;
+        } while (i < 20);
+
+        while (lowcomp > 128) {         /* two iterations maximum */
+            lowcomp -= 128;
+            psd = 128 * exp[i];
+            UPDATE_LEAK ();
+            mask = ((fastleak + lowcomp < slowleak) ?
+                    fastleak + lowcomp : slowleak);
+            COMPUTE_MASK ();
+            bap[i] = (baptab+156)[mask + 4 * exp[i]];
+            i++;
+        }
+        j = i;
+    }
+
+    do {
+        int startband, endband;
+
+        startband = j;
+        endband = (bndtab[i-20] < end) ? bndtab[i-20] : end;
+        psd = 128 * exp[j++];
+        while (j < endband) {
+            int next, delta;
+
+            next = 128 * exp[j++];
+            delta = next - psd;
+            switch (delta >> 9) {
+            case -6: case -5: case -4: case -3: case -2:
+                psd = next;
+                break;
+            case -1:
+                psd = next + latab[(-delta) >> 1];
+                break;
+            case 0:
+                psd += latab[delta >> 1];
+                break;
+            }
+        }
+        /* minpsd = -289 */
+        UPDATE_LEAK ();
+        mask = (fastleak < slowleak) ? fastleak : slowleak;
+        COMPUTE_MASK ();
+        i++;
+        j = startband;
+        do {
+            /* max(mask+4*exp)=147=-(minpsd+fgain-deltba-snroffset)>>5+4*exp */
+            /* min(mask+4*exp)=-156=-(sgain-deltba-snroffset)>>5 */
+            bap[j] = (baptab+156)[mask + 4 * exp[j]];
+        } while (++j < endband);
+    } while (j < end);
+}
diff --git a/lib/rbcodec/codecs/liba52/bitstream.c b/lib/rbcodec/codecs/liba52/bitstream.c
new file mode 100644
index 0000000000..155368f1ed
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/bitstream.c
@@ -0,0 +1,97 @@
+/*
+ * bitstream.c
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config-a52.h"
+
+#include <inttypes.h>
+
+#include "a52.h"
+#include "a52_internal.h"
+#include "bitstream.h"
+
+#define BUFFER_SIZE 4096
+
+void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf)
+{
+    int align;
+
+    align = (long)buf & 3;
+    state->buffer_start = (uint32_t *) (buf - align);
+    state->bits_left = 0;
+    state->current_word = 0;
+    bitstream_get (state, align * 8);
+    bitstream_get_2 (state, 0); /* pretend function is used - keep gcc happy */
+}
+
+static inline void bitstream_fill_current (a52_state_t * state)
+{
+    uint32_t tmp;
+
+    tmp = *(state->buffer_start++);
+    state->current_word = swab32 (tmp);
+}
+
+/*
+ * The fast paths for _get is in the
+ * bitstream.h header file so it can be inlined.
+ *
+ * The "bottom half" of this routine is suffixed _bh
+ *
+ * -ah
+ */
+
+uint32_t a52_bitstream_get_bh (a52_state_t * state, uint32_t num_bits)
+{
+    uint32_t result;
+
+    num_bits -= state->bits_left;
+    result = ((state->current_word << (32 - state->bits_left)) >>
+              (32 - state->bits_left));
+
+    bitstream_fill_current (state);
+
+    if (num_bits != 0)
+        result = (result << num_bits) | (state->current_word >> (32 - num_bits));
+
+    state->bits_left = 32 - num_bits;
+
+    return result;
+}
+
+int32_t a52_bitstream_get_bh_2 (a52_state_t * state, uint32_t num_bits)
+{
+    int32_t result;
+
+    num_bits -= state->bits_left;
+    result = ((((int32_t)state->current_word) << (32 - state->bits_left)) >>
+              (32 - state->bits_left));
+
+    bitstream_fill_current(state);
+
+    if (num_bits != 0)
+        result = (result << num_bits) | (state->current_word >> (32 - num_bits));
+        
+    state->bits_left = 32 - num_bits;
+
+    return result;
+}
diff --git a/lib/rbcodec/codecs/liba52/bitstream.h b/lib/rbcodec/codecs/liba52/bitstream.h
new file mode 100644
index 0000000000..56de1571b7
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/bitstream.h
@@ -0,0 +1,54 @@
+/*
+ * bitstream.h
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define swab32(x) (betoh32(x))
+
+void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf);
+uint32_t a52_bitstream_get_bh (a52_state_t * state, uint32_t num_bits);
+int32_t a52_bitstream_get_bh_2 (a52_state_t * state, uint32_t num_bits);
+
+static inline uint32_t bitstream_get (a52_state_t * state, uint32_t num_bits)
+{
+    uint32_t result;
+        
+    if (num_bits < state->bits_left) {
+        result = (state->current_word << (32 - state->bits_left)) >> (32 - num_bits);
+        state->bits_left -= num_bits;
+        return result;
+    }
+
+    return a52_bitstream_get_bh (state, num_bits);
+}
+
+static inline int32_t bitstream_get_2 (a52_state_t * state, uint32_t num_bits)
+{
+    int32_t result;
+        
+    if (num_bits < state->bits_left) {
+        result = (((int32_t)state->current_word) << (32 - state->bits_left)) >> (32 - num_bits);
+        state->bits_left -= num_bits;
+        return result;
+    }
+
+    return a52_bitstream_get_bh_2 (state, num_bits);
+}
diff --git a/lib/rbcodec/codecs/liba52/config-a52.h b/lib/rbcodec/codecs/liba52/config-a52.h
new file mode 100644
index 0000000000..ade7ecf9b8
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/config-a52.h
@@ -0,0 +1,26 @@
+#include "codeclib.h"
+
+/* a52dec profiling */
+/* #undef A52DEC_GPROF */
+
+/* Define to 1 if you have the `memalign' function. */
+/* #undef HAVE_MEMALIGN 1 */
+
+/* liba52 djbfft support */
+/* #undef LIBA52_DJBFFT */
+
+/* a52 sample precision */
+/* #undef LIBA52_DOUBLE */
+
+/* use fixed-point arithmetic */
+#define LIBA52_FIXED
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+
+/* Used in bitstream.h */
+
+#ifdef ROCKBOX_BIG_ENDIAN
+#define WORDS_BIGENDIAN 1
+#endif
+
diff --git a/lib/rbcodec/codecs/liba52/downmix.c b/lib/rbcodec/codecs/liba52/downmix.c
new file mode 100644
index 0000000000..dd2867cb92
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/downmix.c
@@ -0,0 +1,688 @@
+/*
+ * downmix.c
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config-a52.h"
+
+#include <string.h>
+#include <inttypes.h>
+
+#include "a52.h"
+#include "a52_internal.h"
+
+#define CONVERT(acmod,output) (((output) << 3) + (acmod))
+
+int a52_downmix_init (int input, int flags, level_t * level,
+                      level_t clev, level_t slev)
+{
+    static uint8_t table[11][8] = {
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_STEREO,
+         A52_STEREO,    A52_STEREO,     A52_STEREO,     A52_STEREO},
+        {A52_MONO,      A52_MONO,       A52_MONO,       A52_MONO,
+         A52_MONO,      A52_MONO,       A52_MONO,       A52_MONO},
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_STEREO,
+         A52_STEREO,    A52_STEREO,     A52_STEREO,     A52_STEREO},
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_3F,
+         A52_STEREO,    A52_3F,         A52_STEREO,     A52_3F},
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_STEREO,
+         A52_2F1R,      A52_2F1R,       A52_2F1R,       A52_2F1R},
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_STEREO,
+         A52_2F1R,      A52_3F1R,       A52_2F1R,       A52_3F1R},
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_3F,
+         A52_2F2R,      A52_2F2R,       A52_2F2R,       A52_2F2R},
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_3F,
+         A52_2F2R,      A52_3F2R,       A52_2F2R,       A52_3F2R},
+        {A52_CHANNEL1,  A52_MONO,       A52_MONO,       A52_MONO,
+         A52_MONO,      A52_MONO,       A52_MONO,       A52_MONO},
+        {A52_CHANNEL2,  A52_MONO,       A52_MONO,       A52_MONO,
+         A52_MONO,      A52_MONO,       A52_MONO,       A52_MONO},
+        {A52_CHANNEL,   A52_DOLBY,      A52_STEREO,     A52_DOLBY,
+         A52_DOLBY,     A52_DOLBY,      A52_DOLBY,      A52_DOLBY}
+    };
+    int output;
+
+    output = flags & A52_CHANNEL_MASK;
+    if (output > A52_DOLBY)
+        return -1;
+
+    output = table[output][input & 7];
+
+    if (output == A52_STEREO &&
+        (input == A52_DOLBY || (input == A52_3F && clev == LEVEL (LEVEL_3DB))))
+        output = A52_DOLBY;
+
+    if (flags & A52_ADJUST_LEVEL) {
+        level_t adjust;
+
+        switch (CONVERT (input & 7, output)) {
+
+        case CONVERT (A52_3F, A52_MONO):
+            adjust = DIV (LEVEL_3DB, LEVEL (1) + clev);
+            break;
+
+        case CONVERT (A52_STEREO, A52_MONO):
+        case CONVERT (A52_2F2R, A52_2F1R):
+        case CONVERT (A52_3F2R, A52_3F1R):
+        level_3db:
+            adjust = LEVEL (LEVEL_3DB);
+            break;
+
+        case CONVERT (A52_3F2R, A52_2F1R):
+            if (clev < LEVEL (LEVEL_PLUS3DB - 1))
+                goto level_3db;
+            /* break thru */
+        case CONVERT (A52_3F, A52_STEREO):
+        case CONVERT (A52_3F1R, A52_2F1R):
+        case CONVERT (A52_3F1R, A52_2F2R):
+        case CONVERT (A52_3F2R, A52_2F2R):
+            adjust = DIV (1, LEVEL (1) + clev);
+            break;
+
+        case CONVERT (A52_2F1R, A52_MONO):
+            adjust = DIV (LEVEL_PLUS3DB, LEVEL (2) + slev);
+            break;
+
+        case CONVERT (A52_2F1R, A52_STEREO):
+        case CONVERT (A52_3F1R, A52_3F):
+            adjust = DIV (1, LEVEL (1) + MUL_C (slev, LEVEL_3DB));
+            break;
+
+        case CONVERT (A52_3F1R, A52_MONO):
+            adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + MUL_C (slev, 0.5));
+            break;
+
+        case CONVERT (A52_3F1R, A52_STEREO):
+            adjust = DIV (1, LEVEL (1) + clev + MUL_C (slev, LEVEL_3DB));
+            break;
+
+        case CONVERT (A52_2F2R, A52_MONO):
+            adjust = DIV (LEVEL_3DB, LEVEL (1) + slev);
+            break;
+
+        case CONVERT (A52_2F2R, A52_STEREO):
+        case CONVERT (A52_3F2R, A52_3F):
+            adjust = DIV (1, LEVEL (1) + slev);
+            break;
+
+        case CONVERT (A52_3F2R, A52_MONO):
+            adjust = DIV (LEVEL_3DB, LEVEL (1) + clev + slev);
+            break;
+
+        case CONVERT (A52_3F2R, A52_STEREO):
+            adjust = DIV (1, LEVEL (1) + clev + slev);
+            break;
+
+        case CONVERT (A52_MONO, A52_DOLBY):
+            adjust = LEVEL (LEVEL_PLUS3DB);
+            break;
+
+        case CONVERT (A52_3F, A52_DOLBY):
+        case CONVERT (A52_2F1R, A52_DOLBY):
+            adjust = LEVEL (1 / (1 + LEVEL_3DB));
+            break;
+
+        case CONVERT (A52_3F1R, A52_DOLBY):
+        case CONVERT (A52_2F2R, A52_DOLBY):
+            adjust = LEVEL (1 / (1 + 2 * LEVEL_3DB));
+            break;
+
+        case CONVERT (A52_3F2R, A52_DOLBY):
+            adjust = LEVEL (1 / (1 + 3 * LEVEL_3DB));
+            break;
+
+        default:
+            return output;
+        }
+
+        *level = MUL_L (*level, adjust);
+    }
+
+    return output;
+}
+
+int a52_downmix_coeff (level_t * coeff, int acmod, int output, level_t level,
+                       level_t clev, level_t slev)
+{
+    level_t level_3db;
+
+    level_3db = MUL_C (level, LEVEL_3DB);
+
+    switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
+
+    case CONVERT (A52_CHANNEL, A52_CHANNEL):
+    case CONVERT (A52_MONO, A52_MONO):
+    case CONVERT (A52_STEREO, A52_STEREO):
+    case CONVERT (A52_3F, A52_3F):
+    case CONVERT (A52_2F1R, A52_2F1R):
+    case CONVERT (A52_3F1R, A52_3F1R):
+    case CONVERT (A52_2F2R, A52_2F2R):
+    case CONVERT (A52_3F2R, A52_3F2R):
+    case CONVERT (A52_STEREO, A52_DOLBY):
+        coeff[0] = coeff[1] = coeff[2] = coeff[3] = coeff[4] = level;
+        return 0;
+
+    case CONVERT (A52_CHANNEL, A52_MONO):
+        coeff[0] = coeff[1] = MUL_C (level, LEVEL_6DB);
+        return 3;
+
+    case CONVERT (A52_STEREO, A52_MONO):
+        coeff[0] = coeff[1] = level_3db;
+        return 3;
+
+    case CONVERT (A52_3F, A52_MONO):
+        coeff[0] = coeff[2] = level_3db;
+        coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
+        return 7;
+
+    case CONVERT (A52_2F1R, A52_MONO):
+        coeff[0] = coeff[1] = level_3db;
+        coeff[2] = MUL_L (level_3db, slev);
+        return 7;
+
+    case CONVERT (A52_2F2R, A52_MONO):
+        coeff[0] = coeff[1] = level_3db;
+        coeff[2] = coeff[3] = MUL_L (level_3db, slev);
+        return 15;
+
+    case CONVERT (A52_3F1R, A52_MONO):
+        coeff[0] = coeff[2] = level_3db;
+        coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
+        coeff[3] = MUL_L (level_3db, slev);
+        return 15;
+
+    case CONVERT (A52_3F2R, A52_MONO):
+        coeff[0] = coeff[2] = level_3db;
+        coeff[1] = MUL_C (MUL_L (level_3db, clev), LEVEL_PLUS6DB);
+        coeff[3] = coeff[4] = MUL_L (level_3db, slev);
+        return 31;
+
+    case CONVERT (A52_MONO, A52_DOLBY):
+        coeff[0] = level_3db;
+        return 0;
+
+    case CONVERT (A52_3F, A52_DOLBY):
+        coeff[0] = coeff[2] = coeff[3] = coeff[4] = level;
+        coeff[1] = level_3db;
+        return 7;
+
+    case CONVERT (A52_3F, A52_STEREO):
+    case CONVERT (A52_3F1R, A52_2F1R):
+    case CONVERT (A52_3F2R, A52_2F2R):
+        coeff[0] = coeff[2] = coeff[3] = coeff[4] = level;
+        coeff[1] = MUL_L (level, clev);
+        return 7;
+
+    case CONVERT (A52_2F1R, A52_DOLBY):
+        coeff[0] = coeff[1] = level;
+        coeff[2] = level_3db;
+        return 7;
+
+    case CONVERT (A52_2F1R, A52_STEREO):
+        coeff[0] = coeff[1] = level;
+        coeff[2] = MUL_L (level_3db, slev);
+        return 7;
+
+    case CONVERT (A52_3F1R, A52_DOLBY):
+        coeff[0] = coeff[2] = level;
+        coeff[1] = coeff[3] = level_3db;
+        return 15;
+
+    case CONVERT (A52_3F1R, A52_STEREO):
+        coeff[0] = coeff[2] = level;
+        coeff[1] = MUL_L (level, clev);
+        coeff[3] = MUL_L (level_3db, slev);
+        return 15;
+
+    case CONVERT (A52_2F2R, A52_DOLBY):
+        coeff[0] = coeff[1] = level;
+        coeff[2] = coeff[3] = level_3db;
+        return 15;
+
+    case CONVERT (A52_2F2R, A52_STEREO):
+        coeff[0] = coeff[1] = level;
+        coeff[2] = coeff[3] = MUL_L (level, slev);
+        return 15;
+
+    case CONVERT (A52_3F2R, A52_DOLBY):
+        coeff[0] = coeff[2] = level;
+        coeff[1] = coeff[3] = coeff[4] = level_3db;
+        return 31;
+
+    case CONVERT (A52_3F2R, A52_2F1R):
+        coeff[0] = coeff[2] = level;
+        coeff[1] = MUL_L (level, clev);
+        coeff[3] = coeff[4] = level_3db;
+        return 31;
+
+    case CONVERT (A52_3F2R, A52_STEREO):
+        coeff[0] = coeff[2] = level;
+        coeff[1] = MUL_L (level, clev);
+        coeff[3] = coeff[4] = MUL_L (level, slev);
+        return 31;
+
+    case CONVERT (A52_3F1R, A52_3F):
+        coeff[0] = coeff[1] = coeff[2] = level;
+        coeff[3] = MUL_L (level_3db, slev);
+        return 13;
+
+    case CONVERT (A52_3F2R, A52_3F):
+        coeff[0] = coeff[1] = coeff[2] = level;
+        coeff[3] = coeff[4] = MUL_L (level, slev);
+        return 29;
+
+    case CONVERT (A52_2F2R, A52_2F1R):
+        coeff[0] = coeff[1] = level;
+        coeff[2] = coeff[3] = level_3db;
+        return 12;
+
+    case CONVERT (A52_3F2R, A52_3F1R):
+        coeff[0] = coeff[1] = coeff[2] = level;
+        coeff[3] = coeff[4] = level_3db;
+        return 24;
+
+    case CONVERT (A52_2F1R, A52_2F2R):
+        coeff[0] = coeff[1] = level;
+        coeff[2] = level_3db;
+        return 0;
+
+    case CONVERT (A52_3F1R, A52_2F2R):
+        coeff[0] = coeff[2] = level;
+        coeff[1] = MUL_L (level, clev);
+        coeff[3] = level_3db;
+        return 7;
+
+    case CONVERT (A52_3F1R, A52_3F2R):
+        coeff[0] = coeff[1] = coeff[2] = level;
+        coeff[3] = level_3db;
+        return 0;
+
+    case CONVERT (A52_CHANNEL, A52_CHANNEL1):
+        coeff[0] = level;
+        coeff[1] = 0;
+        return 0;
+
+    case CONVERT (A52_CHANNEL, A52_CHANNEL2):
+        coeff[0] = 0;
+        coeff[1] = level;
+        return 0;
+    }
+
+    return -1;  /* NOTREACHED */
+}
+
+static void mix2to1 (sample_t * dest, sample_t * src)
+{
+    int i;
+
+    for (i = 0; i < 256; i++)
+        dest[i] += BIAS (src[i]);
+}
+
+static void mix3to1 (sample_t * samples)
+{
+    int i;
+
+    for (i = 0; i < 256; i++)
+        samples[i] += BIAS (samples[i + 256] + samples[i + 512]);
+}
+
+static void mix4to1 (sample_t * samples)
+{
+    int i;
+
+    for (i = 0; i < 256; i++)
+        samples[i] += BIAS (samples[i + 256] + samples[i + 512] +
+                            samples[i + 768]);
+}
+
+static void mix5to1 (sample_t * samples)
+{
+    int i;
+
+    for (i = 0; i < 256; i++)
+        samples[i] += BIAS (samples[i + 256] + samples[i + 512] +
+                            samples[i + 768] + samples[i + 1024]);
+}
+
+static void mix3to2 (sample_t * samples)
+{
+    int i;
+    sample_t common;
+
+    for (i = 0; i < 256; i++) {
+        common = BIAS (samples[i + 256]);
+        samples[i] += common;
+        samples[i + 256] = samples[i + 512] + common;
+    }
+}
+
+static void mix21to2 (sample_t * left, sample_t * right)
+{
+    int i;
+    sample_t common;
+
+    for (i = 0; i < 256; i++) {
+        common = BIAS (right[i + 256]);
+        left[i] += common;
+        right[i] += common;
+    }
+}
+
+static void mix21toS (sample_t * samples)
+{
+    int i;
+    sample_t surround;
+
+    for (i = 0; i < 256; i++) {
+        surround = samples[i + 512];
+        samples[i] += BIAS (-surround);
+        samples[i + 256] += BIAS (surround);
+    }
+}
+
+static void mix31to2 (sample_t * samples)
+{
+    int i;
+    sample_t common;
+
+    for (i = 0; i < 256; i++) {
+        common = BIAS (samples[i + 256] + samples[i + 768]);
+        samples[i] += common;
+        samples[i + 256] = samples[i + 512] + common;
+    }
+}
+
+static void mix31toS (sample_t * samples)
+{
+    int i;
+    sample_t common, surround;
+
+    for (i = 0; i < 256; i++) {
+        common = BIAS (samples[i + 256]);
+        surround = samples[i + 768];
+        samples[i] += common - surround;
+        samples[i + 256] = samples[i + 512] + common + surround;
+    }
+}
+
+static void mix22toS (sample_t * samples)
+{
+    int i;
+    sample_t surround;
+
+    for (i = 0; i < 256; i++) {
+        surround = samples[i + 512] + samples[i + 768];
+        samples[i] += BIAS (-surround);
+        samples[i + 256] += BIAS (surround);
+    }
+}
+
+static void mix32to2 (sample_t * samples)
+{
+    int i;
+    sample_t common;
+
+    for (i = 0; i < 256; i++) {
+        common = BIAS (samples[i + 256]);
+        samples[i] += common + samples[i + 768];
+        samples[i + 256] = common + samples[i + 512] + samples[i + 1024];
+    }
+}
+
+static void mix32toS (sample_t * samples)
+{
+    int i;
+    sample_t common, surround;
+
+    for (i = 0; i < 256; i++) {
+        common = BIAS (samples[i + 256]);
+        surround = samples[i + 768] + samples[i + 1024];
+        samples[i] += common - surround;
+        samples[i + 256] = samples[i + 512] + common + surround;
+    }
+}
+
+static void move2to1 (sample_t * src, sample_t * dest)
+{
+    int i;
+
+    for (i = 0; i < 256; i++)
+        dest[i] = BIAS (src[i] + src[i + 256]);
+}
+
+static void zero (sample_t * samples)
+{
+    int i;
+
+    for (i = 0; i < 256; i++)
+        samples[i] = 0;
+}
+
+void a52_downmix (sample_t * samples, int acmod, int output,
+                  level_t clev, level_t slev)
+{
+    /* avoid compiler warning */
+    (void)clev;
+
+    switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
+
+    case CONVERT (A52_CHANNEL, A52_CHANNEL2):
+        memcpy (samples, samples + 256, 256 * sizeof (sample_t));
+        break;
+
+    case CONVERT (A52_CHANNEL, A52_MONO):
+    case CONVERT (A52_STEREO, A52_MONO):
+    mix_2to1:
+        mix2to1 (samples, samples + 256);
+        break;
+
+    case CONVERT (A52_2F1R, A52_MONO):
+        if (slev == 0)
+            goto mix_2to1;
+    case CONVERT (A52_3F, A52_MONO):
+    mix_3to1:
+        mix3to1 (samples);
+        break;
+
+    case CONVERT (A52_3F1R, A52_MONO):
+        if (slev == 0)
+            goto mix_3to1;
+    case CONVERT (A52_2F2R, A52_MONO):
+        if (slev == 0)
+            goto mix_2to1;
+        mix4to1 (samples);
+        break;
+
+    case CONVERT (A52_3F2R, A52_MONO):
+        if (slev == 0)
+            goto mix_3to1;
+        mix5to1 (samples);
+        break;
+
+    case CONVERT (A52_MONO, A52_DOLBY):
+        memcpy (samples + 256, samples, 256 * sizeof (sample_t));
+        break;
+
+    case CONVERT (A52_3F, A52_STEREO):
+    case CONVERT (A52_3F, A52_DOLBY):
+    mix_3to2:
+        mix3to2 (samples);
+        break;
+
+    case CONVERT (A52_2F1R, A52_STEREO):
+        if (slev == 0)
+            break;
+        mix21to2 (samples, samples + 256);
+        break;
+
+    case CONVERT (A52_2F1R, A52_DOLBY):
+        mix21toS (samples);
+        break;
+
+    case CONVERT (A52_3F1R, A52_STEREO):
+        if (slev == 0)
+            goto mix_3to2;
+        mix31to2 (samples);
+        break;
+
+    case CONVERT (A52_3F1R, A52_DOLBY):
+        mix31toS (samples);
+        break;
+
+    case CONVERT (A52_2F2R, A52_STEREO):
+        if (slev == 0)
+            break;
+        mix2to1 (samples, samples + 512);
+        mix2to1 (samples + 256, samples + 768);
+        break;
+
+    case CONVERT (A52_2F2R, A52_DOLBY):
+        mix22toS (samples);
+        break;
+
+    case CONVERT (A52_3F2R, A52_STEREO):
+        if (slev == 0)
+            goto mix_3to2;
+        mix32to2 (samples);
+        break;
+
+    case CONVERT (A52_3F2R, A52_DOLBY):
+        mix32toS (samples);
+        break;
+
+    case CONVERT (A52_3F1R, A52_3F):
+        if (slev == 0)
+            break;
+        mix21to2 (samples, samples + 512);
+        break;
+
+    case CONVERT (A52_3F2R, A52_3F):
+        if (slev == 0)
+            break;
+        mix2to1 (samples, samples + 768);
+        mix2to1 (samples + 512, samples + 1024);
+        break;
+
+    case CONVERT (A52_3F1R, A52_2F1R):
+        mix3to2 (samples);
+        memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t));
+        break;
+
+    case CONVERT (A52_2F2R, A52_2F1R):
+        mix2to1 (samples + 512, samples + 768);
+        break;
+
+    case CONVERT (A52_3F2R, A52_2F1R):
+        mix3to2 (samples);
+        move2to1 (samples + 768, samples + 512);
+        break;
+
+    case CONVERT (A52_3F2R, A52_3F1R):
+        mix2to1 (samples + 768, samples + 1024);
+        break;
+
+    case CONVERT (A52_2F1R, A52_2F2R):
+        memcpy (samples + 768, samples + 512, 256 * sizeof (sample_t));
+        break;
+
+    case CONVERT (A52_3F1R, A52_2F2R):
+        mix3to2 (samples);
+        memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t));
+        break;
+
+    case CONVERT (A52_3F2R, A52_2F2R):
+        mix3to2 (samples);
+        memcpy (samples + 512, samples + 768, 256 * sizeof (sample_t));
+        memcpy (samples + 768, samples + 1024, 256 * sizeof (sample_t));
+        break;
+
+    case CONVERT (A52_3F1R, A52_3F2R):
+        memcpy (samples + 1024, samples + 768, 256 * sizeof (sample_t));
+        break;
+    }
+}
+
+void a52_upmix (sample_t * samples, int acmod, int output)
+{
+    switch (CONVERT (acmod, output & A52_CHANNEL_MASK)) {
+
+    case CONVERT (A52_CHANNEL, A52_CHANNEL2):
+        memcpy (samples + 256, samples, 256 * sizeof (sample_t));
+        break;
+
+    case CONVERT (A52_3F2R, A52_MONO):
+        zero (samples + 1024);
+    case CONVERT (A52_3F1R, A52_MONO):
+    case CONVERT (A52_2F2R, A52_MONO):
+        zero (samples + 768);
+    case CONVERT (A52_3F, A52_MONO):
+    case CONVERT (A52_2F1R, A52_MONO):
+        zero (samples + 512);
+    case CONVERT (A52_CHANNEL, A52_MONO):
+    case CONVERT (A52_STEREO, A52_MONO):
+        zero (samples + 256);
+        break;
+
+    case CONVERT (A52_3F2R, A52_STEREO):
+    case CONVERT (A52_3F2R, A52_DOLBY):
+        zero (samples + 1024);
+    case CONVERT (A52_3F1R, A52_STEREO):
+    case CONVERT (A52_3F1R, A52_DOLBY):
+        zero (samples + 768);
+    case CONVERT (A52_3F, A52_STEREO):
+    case CONVERT (A52_3F, A52_DOLBY):
+    mix_3to2:
+        memcpy (samples + 512, samples + 256, 256 * sizeof (sample_t));
+        zero (samples + 256);
+        break;
+
+    case CONVERT (A52_2F2R, A52_STEREO):
+    case CONVERT (A52_2F2R, A52_DOLBY):
+        zero (samples + 768);
+    case CONVERT (A52_2F1R, A52_STEREO):
+    case CONVERT (A52_2F1R, A52_DOLBY):
+        zero (samples + 512);
+        break;
+
+    case CONVERT (A52_3F2R, A52_3F):
+        zero (samples + 1024);
+    case CONVERT (A52_3F1R, A52_3F):
+    case CONVERT (A52_2F2R, A52_2F1R):
+        zero (samples + 768);
+        break;
+
+    case CONVERT (A52_3F2R, A52_3F1R):
+        zero (samples + 1024);
+        break;
+
+    case CONVERT (A52_3F2R, A52_2F1R):
+        zero (samples + 1024);
+    case CONVERT (A52_3F1R, A52_2F1R):
+    mix_31to21:
+        memcpy (samples + 768, samples + 512, 256 * sizeof (sample_t));
+        goto mix_3to2;
+
+    case CONVERT (A52_3F2R, A52_2F2R):
+        memcpy (samples + 1024, samples + 768, 256 * sizeof (sample_t));
+        goto mix_31to21;
+    }
+}
diff --git a/lib/rbcodec/codecs/liba52/imdct.c b/lib/rbcodec/codecs/liba52/imdct.c
new file mode 100644
index 0000000000..e93424c5fa
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/imdct.c
@@ -0,0 +1,486 @@
+/*
+ * imdct.c
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * The ifft algorithms in this file have been largely inspired by Dan
+ * Bernstein's work, djbfft, available at http://cr.yp.to/djbfft.html
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config-a52.h"
+
+#include <math.h>
+#include <stdio.h>
+#ifdef LIBA52_DJBFFT
+#include <fftc4.h>
+#include <fftc8.h>
+#endif
+#ifndef M_PI
+#define M_PI 3.1415926535897932384626433832795029
+#endif
+#include <inttypes.h>
+
+#include "a52.h"
+#include "a52_internal.h"
+#include "mm_accel.h"
+
+typedef struct complex_s {
+    sample_t real;
+    sample_t imag;
+} complex_t;
+
+static const uint8_t fftorder[] = {
+      0,128, 64,192, 32,160,224, 96, 16,144, 80,208,240,112, 48,176,
+      8,136, 72,200, 40,168,232,104,248,120, 56,184, 24,152,216, 88,
+      4,132, 68,196, 36,164,228,100, 20,148, 84,212,244,116, 52,180,
+    252,124, 60,188, 28,156,220, 92, 12,140, 76,204,236,108, 44,172,
+      2,130, 66,194, 34,162,226, 98, 18,146, 82,210,242,114, 50,178,
+     10,138, 74,202, 42,170,234,106,250,122, 58,186, 26,154,218, 90,
+    254,126, 62,190, 30,158,222, 94, 14,142, 78,206,238,110, 46,174,
+      6,134, 70,198, 38,166,230,102,246,118, 54,182, 22,150,214, 86
+};
+
+/* Root values for IFFT */
+//static sample_t roots16[3];
+//static sample_t roots32[7];
+//static sample_t roots64[15];
+//static sample_t roots128[31];
+
+/* Twiddle factors for IMDCT */
+//static complex_t pre1[128];
+//static complex_t post1[64];
+//static complex_t pre2[64];
+//static complex_t post2[32];
+
+//static sample_t a52_imdct_window[256];
+#include "imdct_lookups.h"
+
+
+/*
+static void (* ifft128) (complex_t * buf);
+static void (* ifft64) (complex_t * buf);
+
+static inline void ifft2 (complex_t * buf)
+{
+    sample_t r, i;
+
+    r = buf[0].real;
+    i = buf[0].imag;
+    buf[0].real += buf[1].real;
+    buf[0].imag += buf[1].imag;
+    buf[1].real = r - buf[1].real;
+    buf[1].imag = i - buf[1].imag;
+}
+
+static inline void ifft4 (complex_t * buf)
+{
+    sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
+
+    tmp1 = buf[0].real + buf[1].real;
+    tmp2 = buf[3].real + buf[2].real;
+    tmp3 = buf[0].imag + buf[1].imag;
+    tmp4 = buf[2].imag + buf[3].imag;
+    tmp5 = buf[0].real - buf[1].real;
+    tmp6 = buf[0].imag - buf[1].imag;
+    tmp7 = buf[2].imag - buf[3].imag;
+    tmp8 = buf[3].real - buf[2].real;
+
+    buf[0].real = tmp1 + tmp2;
+    buf[0].imag = tmp3 + tmp4;
+    buf[2].real = tmp1 - tmp2;
+    buf[2].imag = tmp3 - tmp4;
+    buf[1].real = tmp5 + tmp7;
+    buf[1].imag = tmp6 + tmp8;
+    buf[3].real = tmp5 - tmp7;
+    buf[3].imag = tmp6 - tmp8;
+}
+*/
+/* basic radix-2 ifft butterfly */
+
+#define BUTTERFLY_0(t0,t1,W0,W1,d0,d1) do {     \
+    t0 = MUL (W1, d1) + MUL (W0, d0);           \
+    t1 = MUL (W0, d1) - MUL (W1, d0);           \
+} while (0)
+
+/* radix-2 ifft butterfly with bias */
+
+#define BUTTERFLY_B(t0,t1,W0,W1,d0,d1) do {     \
+    t0 = BIAS (MUL (d1, W1) + MUL (d0, W0));    \
+    t1 = BIAS (MUL (d1, W0) - MUL (d0, W1));    \
+} while (0)
+
+/* the basic split-radix ifft butterfly */
+
+#define BUTTERFLY(a0,a1,a2,a3,wr,wi) do {               \
+    BUTTERFLY_0 (tmp5, tmp6, wr, wi, a2.real, a2.imag); \
+    BUTTERFLY_0 (tmp8, tmp7, wr, wi, a3.imag, a3.real); \
+    tmp1 = tmp5 + tmp7;                                 \
+    tmp2 = tmp6 + tmp8;                                 \
+    tmp3 = tmp6 - tmp8;                                 \
+    tmp4 = tmp7 - tmp5;                                 \
+    a2.real = a0.real - tmp1;                           \
+    a2.imag = a0.imag - tmp2;                           \
+    a3.real = a1.real - tmp3;                           \
+    a3.imag = a1.imag - tmp4;                           \
+    a0.real += tmp1;                                    \
+    a0.imag += tmp2;                                    \
+    a1.real += tmp3;                                    \
+    a1.imag += tmp4;                                    \
+} while (0)
+
+/* split-radix ifft butterfly, specialized for wr=1 wi=0 */
+
+#define BUTTERFLY_ZERO(a0,a1,a2,a3) do {        \
+    tmp1 = a2.real + a3.real;                   \
+    tmp2 = a2.imag + a3.imag;                   \
+    tmp3 = a2.imag - a3.imag;                   \
+    tmp4 = a3.real - a2.real;                   \
+    a2.real = a0.real - tmp1;                   \
+    a2.imag = a0.imag - tmp2;                   \
+    a3.real = a1.real - tmp3;                   \
+    a3.imag = a1.imag - tmp4;                   \
+    a0.real += tmp1;                            \
+    a0.imag += tmp2;                            \
+    a1.real += tmp3;                            \
+    a1.imag += tmp4;                            \
+} while (0)
+
+/* split-radix ifft butterfly, specialized for wr=wi */
+/*
+#define BUTTERFLY_HALF(a0,a1,a2,a3,w) do {      \
+    tmp5 = MUL (a2.real + a2.imag, w);          \
+    tmp6 = MUL (a2.imag - a2.real, w);          \
+    tmp7 = MUL (a3.real - a3.imag, w);          \
+    tmp8 = MUL (a3.imag + a3.real, w);          \
+    tmp1 = tmp5 + tmp7;                         \
+    tmp2 = tmp6 + tmp8;                         \
+    tmp3 = tmp6 - tmp8;                         \
+    tmp4 = tmp7 - tmp5;                         \
+    a2.real = a0.real - tmp1;                   \
+    a2.imag = a0.imag - tmp2;                   \
+    a3.real = a1.real - tmp3;                   \
+    a3.imag = a1.imag - tmp4;                   \
+    a0.real += tmp1;                            \
+    a0.imag += tmp2;                            \
+    a1.real += tmp3;                            \
+    a1.imag += tmp4;                            \
+} while (0)
+
+static inline void ifft8 (complex_t * buf)
+{
+    sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
+
+    ifft4 (buf);
+    ifft2 (buf + 4);
+    ifft2 (buf + 6);
+    BUTTERFLY_ZERO (buf[0], buf[2], buf[4], buf[6]);
+    BUTTERFLY_HALF (buf[1], buf[3], buf[5], buf[7], roots16[1]);
+}
+
+static void ifft_pass (complex_t * buf, const sample_t * weight, int n)
+{
+    complex_t * buf1;
+    complex_t * buf2;
+    complex_t * buf3;
+    sample_t tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
+    int i;
+
+    buf++;
+    buf1 = buf + n;
+    buf2 = buf + 2 * n;
+    buf3 = buf + 3 * n;
+
+    BUTTERFLY_ZERO (buf[-1], buf1[-1], buf2[-1], buf3[-1]);
+
+    i = n - 1;
+
+    do {
+        BUTTERFLY (buf[0], buf1[0], buf2[0], buf3[0],
+                   weight[0], weight[2*i-n]);
+        buf++;
+        buf1++;
+        buf2++;
+        buf3++;
+        weight++;
+    } while (--i);
+}
+
+static void ifft16 (complex_t * buf)
+{
+    ifft8 (buf);
+    ifft4 (buf + 8);
+    ifft4 (buf + 12);
+    ifft_pass (buf, roots16, 4);
+}
+
+static void ifft32 (complex_t * buf)
+{
+    ifft16 (buf);
+    ifft8 (buf + 16);
+    ifft8 (buf + 24);
+    ifft_pass (buf, roots32, 8);
+}
+
+static void ifft64_c (complex_t * buf)
+{
+    ifft32 (buf);
+    ifft16 (buf + 32);
+    ifft16 (buf + 48);
+    ifft_pass (buf, roots64, 16);
+}
+
+static void ifft128_c (complex_t * buf)
+{
+    ifft32 (buf);
+    ifft16 (buf + 32);
+    ifft16 (buf + 48);
+    ifft_pass (buf, roots64, 16);
+
+    ifft32 (buf + 64);
+    ifft32 (buf + 96);
+    ifft_pass (buf, roots128, 32);
+}
+*/
+void a52_imdct_512 (sample_t * data, sample_t * delay)
+{
+    int i, k;
+    sample_t t_r, t_i, a_r, a_i, b_r, b_i, w_1, w_2;
+    const sample_t * window = a52_imdct_window;
+    FFTComplex buf[128];
+        
+    for (i = 0; i < 128; i++) {
+        k = fftorder[i];
+        t_r = pre1[i].real;
+        t_i = pre1[i].imag;
+        BUTTERFLY_0 (buf[i].re, buf[i].im, t_r, t_i, data[k], data[255-k]);
+    }
+
+    //ifft128 (buf);
+    ff_fft_calc_c(7, (FFTComplex *)&buf);
+
+    /* Post IFFT complex multiply plus IFFT complex conjugate*/
+    /* Window and convert to real valued signal */
+    for (i = 0; i < 64; i++) {
+        /* y[n] = z[n] * (xcos1[n] + j * xsin1[n]) ; */
+        t_r = post1[i].real;
+        t_i = post1[i].imag;
+        BUTTERFLY_0 (a_r, a_i, t_i, t_r, buf[i].im, buf[i].re);
+        BUTTERFLY_0 (b_r, b_i, t_r, t_i, buf[127-i].im, buf[127-i].re);
+
+        w_1 = window[2*i];
+        w_2 = window[255-2*i];
+        BUTTERFLY_B (data[255-2*i], data[2*i], w_2, w_1, a_r, delay[2*i]);
+        delay[2*i] = a_i;
+
+        w_1 = window[2*i+1];
+        w_2 = window[254-2*i];
+        BUTTERFLY_B (data[2*i+1], data[254-2*i], w_1, w_2, b_r, delay[2*i+1]);
+        delay[2*i+1] = b_i;
+    }
+}
+
+void a52_imdct_256 (sample_t * data, sample_t * delay)
+{
+    int i, k;
+    sample_t t_r, t_i, a_r, a_i, b_r, b_i, c_r, c_i, d_r, d_i, w_1, w_2;
+    const sample_t * window = a52_imdct_window;
+    FFTComplex buf1[64], buf2[64];
+
+    /* Pre IFFT complex multiply plus IFFT cmplx conjugate */
+    for (i = 0; i < 64; i++) {
+        k = fftorder[i];
+        t_r = pre2[i].real;
+        t_i = pre2[i].imag;
+        BUTTERFLY_0 (buf1[i].re, buf1[i].im, t_r, t_i, data[k], data[254-k]);
+        BUTTERFLY_0 (buf2[i].re, buf2[i].im, t_r, t_i, data[k+1], data[255-k]);
+    }
+
+    //ifft64 (buf1);
+    //ifft64 (buf2);
+    ff_fft_calc_c(6, (FFTComplex *)&buf1);
+    ff_fft_calc_c(6, (FFTComplex *)&buf2);
+
+    /* Post IFFT complex multiply */
+    /* Window and convert to real valued signal */
+    for (i = 0; i < 32; i++) {
+        /* y1[n] = z1[n] * (xcos2[n] + j * xs in2[n]) ; */ 
+        t_r = post2[i].real;
+        t_i = post2[i].imag;
+        BUTTERFLY_0 (a_r, a_i, t_i, t_r, buf1[i].im, buf1[i].re);
+        BUTTERFLY_0 (b_r, b_i, t_r, t_i, buf1[63-i].im, buf1[63-i].re);
+        BUTTERFLY_0 (c_r, c_i, t_i, t_r, buf2[i].im, buf2[i].re);
+        BUTTERFLY_0 (d_r, d_i, t_r, t_i, buf2[63-i].im, buf2[63-i].re);
+
+        w_1 = window[2*i];
+        w_2 = window[255-2*i];
+        BUTTERFLY_B (data[255-2*i], data[2*i], w_2, w_1, a_r, delay[2*i]);
+        delay[2*i] = c_i;
+
+        w_1 = window[128+2*i];
+        w_2 = window[127-2*i];
+        BUTTERFLY_B (data[128+2*i], data[127-2*i], w_1, w_2, a_i, delay[127-2*i]);
+        delay[127-2*i] = c_r;
+
+        w_1 = window[2*i+1];
+        w_2 = window[254-2*i];
+        BUTTERFLY_B (data[254-2*i], data[2*i+1], w_2, w_1, b_i, delay[2*i+1]);
+        delay[2*i+1] = d_r;
+
+        w_1 = window[129+2*i];
+        w_2 = window[126-2*i];
+        BUTTERFLY_B (data[129+2*i], data[126-2*i], w_1, w_2, b_r, delay[126-2*i]);
+        delay[126-2*i] = d_i;
+    }
+}
+
+/*
+static double besselI0 (double x)
+{
+    double bessel = 1;
+    int i = 100;
+
+    do
+        bessel = bessel * x / (i * i) + 1;
+    while (--i);
+    return bessel;
+}
+*/
+
+void a52_imdct_init (uint32_t mm_accel)
+{
+  (void)mm_accel;
+  //ff_fft_init(&s128, 7, 1);
+  //ff_fft_init(&s64, 6, 1);
+  
+/*    int i, k;
+    double sum;
+    double local_imdct_window[256];*/
+
+    /* compute imdct window - kaiser-bessel derived window, alpha = 5.0 */
+    /*    sum = 0;
+    for (i = 0; i < 256; i++) {
+        sum += besselI0 (i * (256 - i) * (5 * M_PI / 256) * (5 * M_PI / 256));
+        local_imdct_window[i] = sum;
+    }
+    sum++;
+    */
+    /*    for (i = 0; i < 256; i++)
+        a52_imdct_window[i] = SAMPLE (sqrt (local_imdct_window[i] / sum));
+
+    printf("static sample_t a52_imdct_window[256]={");
+    for (i=0;i<256;i++) {
+      if ((i % 16)==0) { printf("\n"); }
+      printf("%d,",a52_imdct_window[i]);
+    }
+    printf("\n}\n");
+    */
+
+    /*    for (i = 0; i < 3; i++)
+        roots16[i] = SAMPLE (cos ((M_PI / 8) * (i + 1)));
+
+    printf("static sample_t roots16[3]={%d,%d,%d};\n\n",roots16[0],roots16[1],roots16[2]);
+
+    for (i = 0; i < 7; i++)
+        roots32[i] = SAMPLE (cos ((M_PI / 16) * (i + 1)));
+
+    printf("static sample_t roots32[7]={");
+    for (i=0;i<7;i++) { printf("%d%s",roots32[i],(i < 6 ? "," : "")); }
+    printf("};\n");
+
+    for (i = 0; i < 15; i++)
+        roots64[i] = SAMPLE (cos ((M_PI / 32) * (i + 1)));
+
+    printf("static sample_t roots64[15]={");
+    for (i=0;i<15;i++) { printf("%d%s",roots64[i],(i < 14 ? "," : "")); }
+    printf("};\n");
+
+    for (i = 0; i < 31; i++)
+        roots128[i] = SAMPLE (cos ((M_PI / 64) * (i + 1)));
+
+    printf("static sample_t roots128[31]={");
+    for (i=0;i<31;i++) { printf("%d%s",roots128[i],(i < 30 ? "," : "")); }
+    printf("};\n");
+    */
+    /*
+    for (i = 0; i < 64; i++) {
+        k = fftorder[i] / 2 + 64;
+        pre1[i].real = SAMPLE (cos ((M_PI / 256) * (k - 0.25)));
+        pre1[i].imag = SAMPLE (sin ((M_PI / 256) * (k - 0.25)));
+    }
+
+    for (i = 64; i < 128; i++) {
+        k = fftorder[i] / 2 + 64;
+        pre1[i].real = SAMPLE (-cos ((M_PI / 256) * (k - 0.25)));
+        pre1[i].imag = SAMPLE (-sin ((M_PI / 256) * (k - 0.25)));
+    }
+
+    printf("static complex_t pre1[128]={");
+    for (i=0;i<128;i++) { printf("{%d,%d}%s",pre1[i].real,pre1[i].imag,(i < 127 ? "," : "")); }
+    printf("};\n");
+    */
+    /*
+    for (i = 0; i < 64; i++) {
+        post1[i].real = SAMPLE (cos ((M_PI / 256) * (i + 0.5)));
+        post1[i].imag = SAMPLE (sin ((M_PI / 256) * (i + 0.5)));
+    }
+
+    printf("static complex_t post1[64]={");
+    for (i=0;i<64;i++) { printf("{%d,%d}%s",post1[i].real,post1[i].imag,(i < 63 ? "," : "")); }
+    printf("};\n");
+    */
+
+    /*
+    for (i = 0; i < 64; i++) {
+        k = fftorder[i] / 4;
+        pre2[i].real = SAMPLE (cos ((M_PI / 128) * (k - 0.25)));
+        pre2[i].imag = SAMPLE (sin ((M_PI / 128) * (k - 0.25)));
+    }
+
+    printf("static complex_t pre2[64]={");
+    for (i=0;i<64;i++) { printf("{%d,%d}%s",pre2[i].real,pre2[i].imag,(i < 63 ? "," : "")); }
+    printf("};\n");
+
+    for (i = 0; i < 32; i++) {
+        post2[i].real = SAMPLE (cos ((M_PI / 128) * (i + 0.5)));
+        post2[i].imag = SAMPLE (sin ((M_PI / 128) * (i + 0.5)));
+    }
+
+    printf("static complex_t post2[32]={");
+    for (i=0;i<32;i++) { printf("{%d,%d}%s",post2[i].real,post2[i].imag,(i < 31 ? "," : "")); }
+    printf("};\n");
+    
+
+#ifdef LIBA52_DJBFFT
+    if (mm_accel & MM_ACCEL_DJBFFT) {
+#ifndef LIBA52_DOUBLE
+        ifft128 = (void (*) (complex_t *)) fftc4_un128;
+        ifft64 = (void (*) (complex_t *)) fftc4_un64;
+#else
+        ifft128 = (void (*) (complex_t *)) fftc8_un128;
+        ifft64 = (void (*) (complex_t *)) fftc8_un64;
+#endif
+    } else
+#endif
+    {
+        ifft128 = ifft128_c;
+        ifft64 = ifft64_c;
+    }
+    */
+}
diff --git a/lib/rbcodec/codecs/liba52/imdct_lookups.h b/lib/rbcodec/codecs/liba52/imdct_lookups.h
new file mode 100644
index 0000000000..9d14fe21a7
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/imdct_lookups.h
@@ -0,0 +1,15 @@
+static const sample_t a52_imdct_window[256]ICONST_ATTR={
+                                       146020,261886,393529,545197,719447,918478,1144416,1399394,1685589,2005234,2360623,2754115,3188134,3665170,4187773,4758556, 5380193,6055411,6786995,7577779,8430645,9348521,10334375,11391212,12522071,13730020,15018150,16389576,17847424,19394833,21034947,22770912, 24605865,26542938,28585242,30735872,32997891,35374332,37868188,40482408,43219889,46083473,49075937,52199993,55458273,58853331,62387636,66063559, 69883377,73849259,77963266,82227341,86643307,91212859,95937560,100818835,105857968,111056092,116414194,121933098,127613474,133455822,139460477,145627601, 151957182,158449029,165102772,171917855,178893540,186028900,193322822,200774000,208380940,216141958,224055176,232118527,240329753,248686407,257185854,265825270, 274601649,283511802,292552357,301719768,311010314,320420105,329945084,339581031,349323572,359168178,369110174,379144743,389266934,399471665,409753732,420107815, 430528483,441010205,451547355,462134219,472765003,483433845,494134818,504861939,515609181,526370480,537139740,547910849,558677680,569434108,580174011,590891284, 601579849,612233658,622846709,633413050,643926788,654382103,664773249,675094567,685340494,695505569,705584441,715571877,725462772,735252152,744935184,754507184, 763963620,773300119,782512477,791596659,800548807,809365245,818042484,826577226,834966364,843206992,851296404,859232096,867011771,874633340,882094922,889394844, 896531647,903504079,910311101,916951881,923425798,929732436,935871584,941843233,947647575,953284997,958756080,964061593,969202490,974179906,978995149,983649698, 988145195,992483442,996666390,1000696136,1004574919,1008305104,1011889185,1015329772,1018629583,1021791439,1024818257,1027713038,1030478862,1033118881,1035636308,1038034411, 1040316504,1042485942,1044546109,1046500412,1048352275,1050105129,1051762405,1053327531,1054803917,1056194958,1057504020,1058734435,1059889501,1060972468,1061986539,1062934861, 1063820523,1064646551,1065415903,1066131467,1066796055,1067412403,1067983168,1068510924,1068998160,1069447282,1069860607,1070240366,1070588702,1070907668,1071199230,1071465266, 1071707567,1071927836,1072127692,1072308670,1072472221,1072619716,1072752449,1072871635,1072978415,1073073858,1073158963,1073234663,1073301826,1073361257,1073413702,1073459852, 1073500344,1073535763,1073566646,1073593486,1073616731,1073636791,1073654036,1073668804,1073681398,1073692090,1073701126,1073708726,1073715084,1073720373,1073724748,1073728344, 1073731279,1073733657,1073735568,1073737090,1073738291,1073739229,1073739951,1073740500,1073740912,1073741214,1073741431,1073741582,1073741685,1073741751,1073741792,1073741814
+};
+
+static const sample_t roots16[3]ICONST_ATTR={992008094,759250124,410903206};
+static const sample_t roots32[7]ICONST_ATTR={1053110175,992008094,892783698,759250124,596538995,410903206,209476638};
+static const sample_t roots64[15]ICONST_ATTR={1068571463,1053110175,1027506861,992008094,946955747,892783698,830013654,759250124,681174602,596538995,506158392,410903206,311690798,209476638,105245103};
+static const sample_t roots128[31]ICONST_ATTR={1072448454,1068571463,1062120190,1053110175,1041563127,1027506861,1010975241,992008094,970651112,946955747,920979082,892783698,862437519,830013654,795590212,759250124,721080937,681174602,639627257,596538995,552013618,506158392,459083785,410903206,361732725,311690798,260897981,209476638,157550647,105245103,52686014};
+
+static const complex_t pre1[128]ICONST_ATTR={{761575898,756917205},{3294193,1073736770},{413944710,990742792},{-407857834,993264059},{599275209,890949340},{-206244755,1053747885},{-593797166,894609652},{212706548,1052462554},{683717842,827919933},{-101966276,1068889322},{314841678,1026545772},{-503250790,948504162},{-678624950,832099562},{108522938,1068243547},{509061229,945398418},{-308536985,1028458279},{723518379,793374223},{-49395540,1072605046},{364832651,1009860703},{-456103709,972054993},{554836544,919281193},{-257701283,1042358649},{-636978326,864395809},{160808444,1061631832},{-718636707,797798713},{55975991,1072281769},{462059540,969238095},{-358629394,1012080264},{642270168,860471112},{-154291366,1062598550},{-549185496,922668301},{264092224,1040757801},{742770847,775379244},{-23057618,1073494224},{389505993,1000603111},{-432110916,982955574},{577229727,905387953},{-232042906,1048369016},{-615573145,879767700},{186813761,1057365652},{663193747,844449855},{-128167423,1066065014},{289554159,1033963197},{-526376678,935868098},{-698841306,815194659},{82274244,1070585098},{485706670,957606670},{-333683689,1020576650},{-737999227,779922204},{29644020,1073332537},{438134083,980285687},{-383359075,1002974238},{620959710,875974053},{-180322371,1058492015},{-571663505,908912724},{238471209,1046925492},{703830091,810891303},{-75703709,1071069770},{339939548,1018509994},{-479821763,960568883},{-657999815,848503239},{134706262,1065258526},{532109148,932620694},{-283204430,1035720404},{-752230014,-766205918},{9882456,-1073696345},{-401755603,-995747929},{420016001,-988184225},{-588296766,-898236282},{219160333,-1051137599},{604730690,-887255485},{-199775197,-1054993542},{-673506508,-836247862},{115075515,-1067557553},{-302220675,-1030332066},{514852501,-942257080},{688784992,-823709134},{-95405775,-1069494853},{-497421404,-951574195},{321134518,-1024594615},{-713727978,-802193167},{62554335,-1071918121},{-352412636,-1014261720},{467997975,-966384705},{-543513771,-926020671},{270473222,-1039117770},{647537829,-856514018},{-147768480,-1063525261},{728372812,-788919863},{-42813229,-1072887940},{-450130706,-974835294},{371022172,-1007603122},{-631662502,-868287963},{167319467,-1060625145},{560466703,-915859475},{-251300639,-1043920252},{747514502,-770807091},{-16470347,-1073615495},{-426071479,-985588453},{395638246,-998194311},{-610163404,-883528225},{193298118,-1056199480},{582774217,-901829094},{-225605866,-1049773069},{-693826210,-819467323},{88841682,-1070060119},{-327415267,-1022604883},{491573291,-954608403},{668362709,-840364678},{-121623758,-1066831367},{-520624390,-939080267},{295892987,-1032167062},{-733199822,-784435800},{36229307,-1073130440},{-377197724,-1005307605},{444140755,-977578893},{-566075760,-912403275},{244890534,-1045442552},{626322896,-872147426},{-173824191,-1059578527},{708792377,-806557418},{-69130323,-1071514117},{-473918791,-963494932},{346182609,-1016404991},{-652781111,-852524677},{141240030,-1064411930},{537821584,-929338177},{-276844037,-1037438616}};
+
+static const complex_t post1[64]ICONST_ATTR={{1073721611,6588355},{1073559912,19764075},{1073236539,32936819},{1072751541,46104602},{1072104991,59265442},{1071296985,72417357},{1070327646,85558366},{1069197119,98686490},{1067905576,111799753},{1066453209,124896178},{1064840239,137973795},{1063066908,151030634},{1061133483,164064728},{1059040255,177074114},{1056787539,190056834},{1054375675,203010932},{1051805026,215934457},{1049075979,228825463},{1046188946,241682009},{1043144359,254502159},{1039942680,267283981},{1036584388,280025551},{1033069991,292724951},{1029400017,305380267},{1025575020,317989594},{1021595574,330551034},{1017462280,343062693},{1013175760,355522688},{1008736660,367929143},{1004145647,380280189},{999403414,392573967},{994510674,404808624},{989468165,416982318},{984276645,429093217},{978936897,441139495},{973449725,453119340},{967815955,465030947},{962036435,476872521},{956112036,488642280},{950043650,500338452},{943832191,511959274},{937478594,523502998},{930983817,534967883},{924348836,546352205},{917574653,557654248},{910662286,568872310},{903612776,580004702},{896427186,591049747},{889106597,602005783},{881652112,612871159},{874064853,623644238},{866345963,634323399},{858496605,644907034},{850517961,655393547},{842411231,665781361},{834177638,676068911},{825818420,686254647},{817334837,696337035},{808728167,706314558},{799999705,716185713},{791150766,725949012},{782182683,735602987},{773096806,745146182},{763894503,754577161}};
+
+static const complex_t pre2[64]ICONST_ATTR={{1073721611,-6588355},{763894503,754577161},{994510674,404808624},{416982318,989468165},{1054375675,203010932},{602005783,889106597},{215934457,1051805026},{896427186,591049747},{1069197119,98686490},{686254647,825818420},{950043650,500338452},{317989594,1025575020},{111799753,1067905576},{834177638,676068911},{1029400017,305380267},{511959274,943832191},{1072751541,46104602},{725949012,791150766},{973449725,453119340},{367929143,1008736660},{1043144359,254502159},{557654248,917574653},{164064728,1061133483},{866345963,634323399},{59265442,1072104991},{799999705,716185713},{1013175760,355522688},{465030947,967815955},{1063066908,151030634},{644907034,858496605},{267283981,1039942680},{924348836,546352205},{1073559912,19764075},{745146182,773096806},{984276645,429093217},{392573967,999403414},{1049075979,228825463},{580004702,903612776},{190056834,1056787539},{881652112,612871159},{1066453209,124896178},{665781361,842411231},{937478594,523502998},{292724951,1033069991},{85558366,1070327646},{817334837,696337035},{1021595574,330551034},{488642280,956112036},{32936819,1073236539},{782182683,735602987},{1004145647,380280189},{441139495,978936897},{1059040255,177074114},{623644238,874064853},{241682009,1046188946},{910662286,568872310},{1071296985,72417357},{706314558,808728167},{962036435,476872521},{343062693,1017462280},{137973795,1064840239},{850517961,655393547},{1036584388,280025551},{534967883,930983817}};
+static const complex_t post2[32]ICONST_ATTR={{1073660973,13176463},{1073014239,39521454},{1071721163,65842639},{1069782521,92124162},{1067199482,118350193},{1063973603,144504935},{1060106825,170572632},{1055601479,196537583},{1050460278,222384146},{1044686318,248096754},{1038283079,273659918},{1031254417,299058239},{1023604566,324276418},{1015338134,349299266},{1006460100,374111709},{996975812,398698801},{986890983,423045731},{976211688,447137835},{964944359,470960600},{953095785,494499675},{940673100,517740882},{927683790,540670222},{914135677,563273882},{900036924,585538247},{885396022,607449906},{870221790,628995659},{854523369,650162530},{838310215,670937766},{821592095,691308855},{804379078,711263525},{786681534,730789756},{768510121,749875787}};
diff --git a/lib/rbcodec/codecs/liba52/liba52.make b/lib/rbcodec/codecs/liba52/liba52.make
new file mode 100644
index 0000000000..04cae4f080
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/liba52.make
@@ -0,0 +1,18 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+
+# liba52
+A52LIB := $(CODECDIR)/liba52.a
+A52LIB_SRC := $(call preprocess, $(RBCODECLIB_DIR)/codecs/liba52/SOURCES)
+A52LIB_OBJ := $(call c2obj, $(A52LIB_SRC))
+OTHER_SRC += $(A52LIB_SRC)
+
+$(A52LIB): $(A52LIB_OBJ)
+        $(SILENT)$(shell rm -f $@)
+        $(call PRINTS,AR $(@F))$(AR) rcs $@ $^ >/dev/null
diff --git a/lib/rbcodec/codecs/liba52/mm_accel.h b/lib/rbcodec/codecs/liba52/mm_accel.h
new file mode 100644
index 0000000000..aafc3fed82
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/mm_accel.h
@@ -0,0 +1,37 @@
+/*
+ * mm_accel.h
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef MM_ACCEL_H
+#define MM_ACCEL_H
+
+/* generic accelerations */
+#define MM_ACCEL_DJBFFT         0x00000001
+
+/* x86 accelerations */
+#define MM_ACCEL_X86_MMX        0x80000000
+#define MM_ACCEL_X86_3DNOW      0x40000000
+#define MM_ACCEL_X86_MMXEXT     0x20000000
+
+uint32_t mm_accel (void);
+
+#endif /* MM_ACCEL_H */
diff --git a/lib/rbcodec/codecs/liba52/parse.c b/lib/rbcodec/codecs/liba52/parse.c
new file mode 100644
index 0000000000..c61c13cdb5
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/parse.c
@@ -0,0 +1,956 @@
+/*
+ * parse.c
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config-a52.h"
+
+#include <string.h>
+#include <inttypes.h>
+
+#include "a52.h"
+#include "a52_internal.h"
+#include "bitstream.h"
+#include "tables.h"
+
+#if defined(HAVE_MEMALIGN) && !defined(__cplusplus)
+/* some systems have memalign() but no declaration for it */
+void * memalign (size_t align, size_t size);
+#else
+/* assume malloc alignment is sufficient */
+#define memalign(align,size) malloc (size)
+#endif
+
+typedef struct {
+    quantizer_t q1[2];
+    quantizer_t q2[2];
+    quantizer_t q4;
+    int q1_ptr;
+    int q2_ptr;
+    int q4_ptr;
+} quantizer_set_t;
+
+static a52_state_t istate IBSS_ATTR;
+static sample_t isamples[256*12] IBSS_ATTR;
+
+static uint8_t halfrate[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3};
+
+a52_state_t * a52_init (uint32_t mm_accel)
+{
+    a52_state_t * state;
+    int i;
+
+    #if defined(CPU_COLDFIRE)
+    coldfire_set_macsr(EMAC_FRACTIONAL | EMAC_ROUND | EMAC_SATURATE);
+    #endif
+    /* 
+      this needs to come back if we ever want two decoder instances
+      simultenously. NOTE, you also need to remove comments in a52_free.
+    state = (a52_state_t *) malloc (sizeof (a52_state_t));
+    if (state == NULL)
+        return NULL;
+
+    state->samples = (sample_t *) memalign (16, 256 * 12 * sizeof (sample_t));
+    if (state->samples == NULL) {
+        free (state);
+        return NULL;
+    }
+
+    */
+    state = &istate;
+    state->samples = isamples;
+    for (i = 0; i < 256 * 12; i++)
+        state->samples[i] = 0;
+
+    state->downmixed = 1;
+
+    state->lfsr_state = 1;
+
+    a52_imdct_init (mm_accel);
+
+    return state;
+}
+
+sample_t * a52_samples (a52_state_t * state)
+{
+    return state->samples;
+}
+
+int a52_syncinfo (uint8_t * buf, int * flags,
+                  int * sample_rate, int * bit_rate)
+{
+    static int rate[] = { 32,  40,  48,  56,  64,  80,  96, 112,
+                         128, 160, 192, 224, 256, 320, 384, 448,
+                         512, 576, 640};
+    static uint8_t lfeon[8] = {0x10, 0x10, 0x04, 0x04, 0x04, 0x01, 0x04, 0x01};
+    int frmsizecod;
+    int bitrate;
+    int half;
+    int acmod;
+
+    if ((buf[0] != 0x0b) || (buf[1] != 0x77))   /* syncword */
+        return 0;
+
+    if (buf[5] >= 0x60)         /* bsid >= 12 */
+        return 0;
+    half = halfrate[buf[5] >> 3];
+
+    /* acmod, dsurmod and lfeon */
+    acmod = buf[6] >> 5;
+    *flags = ((((buf[6] & 0xf8) == 0x50) ? A52_DOLBY : acmod) |
+              ((buf[6] & lfeon[acmod]) ? A52_LFE : 0));
+
+    frmsizecod = buf[4] & 63;
+    if (frmsizecod >= 38)
+        return 0;
+    bitrate = rate [frmsizecod >> 1];
+    *bit_rate = (bitrate * 1000) >> half;
+
+    switch (buf[4] & 0xc0) {
+    case 0:
+        *sample_rate = 48000 >> half;
+        return 4 * bitrate;
+    case 0x40:
+        *sample_rate = 44100 >> half;
+        return 2 * (320 * bitrate / 147 + (frmsizecod & 1));
+    case 0x80:
+        *sample_rate = 32000 >> half;
+        return 6 * bitrate;
+    default:
+        return 0;
+    }
+}
+
+int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
+               level_t * level, sample_t bias)
+{
+    static level_t clev[4] = { LEVEL (LEVEL_3DB), LEVEL (LEVEL_45DB),
+                               LEVEL (LEVEL_6DB), LEVEL (LEVEL_45DB) };
+    static level_t slev[4] = { LEVEL (LEVEL_3DB), LEVEL (LEVEL_6DB), 
+                               0,                 LEVEL (LEVEL_6DB) };
+    int chaninfo;
+    int acmod;
+
+    state->fscod = buf[4] >> 6;
+    state->halfrate = halfrate[buf[5] >> 3];
+    state->acmod = acmod = buf[6] >> 5;
+
+    a52_bitstream_set_ptr (state, buf + 6);
+    bitstream_get (state, 3);   /* skip acmod we already parsed */
+
+    if ((acmod == 2) && (bitstream_get (state, 2) == 2))        /* dsurmod */
+        acmod = A52_DOLBY;
+
+    state->clev = state->slev = 0;
+
+    if ((acmod & 1) && (acmod != 1))
+        state->clev = clev[bitstream_get (state, 2)];   /* cmixlev */
+
+    if (acmod & 4)
+        state->slev = slev[bitstream_get (state, 2)];   /* surmixlev */
+
+    state->lfeon = bitstream_get (state, 1);
+
+    state->output = a52_downmix_init (acmod, *flags, level,
+                                      state->clev, state->slev);
+    if (state->output < 0)
+        return 1;
+    if (state->lfeon && (*flags & A52_LFE))
+        state->output |= A52_LFE;
+    *flags = state->output;
+    /* the 2* compensates for differences in imdct */
+    state->dynrng = state->level = MUL_C (*level, 2);
+    state->bias = bias;
+    state->dynrnge = 1;
+    state->dynrngcall = NULL;
+    state->cplba.deltbae = DELTA_BIT_NONE;
+    state->ba[0].deltbae = state->ba[1].deltbae = state->ba[2].deltbae =
+        state->ba[3].deltbae = state->ba[4].deltbae = DELTA_BIT_NONE;
+
+    chaninfo = !acmod;
+    do {
+        bitstream_get (state, 5);       /* dialnorm */
+        if (bitstream_get (state, 1))   /* compre */
+            bitstream_get (state, 8);   /* compr */
+        if (bitstream_get (state, 1))   /* langcode */
+            bitstream_get (state, 8);   /* langcod */
+        if (bitstream_get (state, 1))   /* audprodie */
+            bitstream_get (state, 7);   /* mixlevel + roomtyp */
+    } while (chaninfo--);
+
+    bitstream_get (state, 2);           /* copyrightb + origbs */
+
+    if (bitstream_get (state, 1))       /* timecod1e */
+        bitstream_get (state, 14);      /* timecod1 */
+    if (bitstream_get (state, 1))       /* timecod2e */
+        bitstream_get (state, 14);      /* timecod2 */
+
+    if (bitstream_get (state, 1)) {     /* addbsie */
+        int addbsil;
+
+        addbsil = bitstream_get (state, 6);
+        do {
+            bitstream_get (state, 8);   /* addbsi */
+        } while (addbsil--);
+    }
+
+    return 0;
+}
+
+void a52_dynrng (a52_state_t * state,
+                 level_t (* call) (level_t, void *), void * data)
+{
+    state->dynrnge = 0;
+    if (call) {
+        state->dynrnge = 1;
+        state->dynrngcall = call;
+        state->dynrngdata = data;
+    }
+}
+
+static int parse_exponents (a52_state_t * state, int expstr, int ngrps,
+                            uint8_t exponent, uint8_t * dest)
+{
+    int exps;
+
+    while (ngrps--) {
+        exps = bitstream_get (state, 7);
+
+        exponent += exp_1[exps];
+        if (exponent > 24)
+            return 1;
+
+        switch (expstr) {
+        case EXP_D45:
+            *(dest++) = exponent;
+            *(dest++) = exponent;
+        case EXP_D25:
+            *(dest++) = exponent;
+        case EXP_D15:
+            *(dest++) = exponent;
+        }
+
+        exponent += exp_2[exps];
+        if (exponent > 24)
+            return 1;
+
+        switch (expstr) {
+        case EXP_D45:
+            *(dest++) = exponent;
+            *(dest++) = exponent;
+        case EXP_D25:
+            *(dest++) = exponent;
+        case EXP_D15:
+            *(dest++) = exponent;
+        }
+
+        exponent += exp_3[exps];
+        if (exponent > 24)
+            return 1;
+
+        switch (expstr) {
+        case EXP_D45:
+            *(dest++) = exponent;
+            *(dest++) = exponent;
+        case EXP_D25:
+            *(dest++) = exponent;
+        case EXP_D15:
+            *(dest++) = exponent;
+        }
+    }   
+
+    return 0;
+}
+
+static int parse_deltba (a52_state_t * state, int8_t * deltba)
+{
+    int deltnseg, deltlen, delta, j;
+
+    memset (deltba, 0, 50);
+
+    deltnseg = bitstream_get (state, 3);
+    j = 0;
+    do {
+        j += bitstream_get (state, 5);
+        deltlen = bitstream_get (state, 4);
+        delta = bitstream_get (state, 3);
+        delta -= (delta >= 4) ? 3 : 4;
+        if (!deltlen)
+            continue;
+        if (j + deltlen >= 50)
+            return 1;
+        while (deltlen--)
+            deltba[j++] = delta;
+    } while (deltnseg--);
+
+    return 0;
+}
+
+static inline int zero_snr_offsets (int nfchans, a52_state_t * state)
+{
+    int i;
+
+    if ((state->csnroffst) ||
+        (state->chincpl && state->cplba.bai >> 3) ||    /* cplinu, fsnroffst */
+        (state->lfeon && state->lfeba.bai >> 3))        /* fsnroffst */
+        return 0;
+    for (i = 0; i < nfchans; i++)
+        if (state->ba[i].bai >> 3)                      /* fsnroffst */
+            return 0;
+    return 1;
+}
+
+static inline int16_t dither_gen (a52_state_t * state)
+{
+    int16_t nstate;
+
+    nstate = dither_lut[state->lfsr_state >> 8] ^ (state->lfsr_state << 8);
+        
+    state->lfsr_state = (uint16_t) nstate;
+
+    return (3 * nstate) >> 2;
+}
+
+#ifndef LIBA52_FIXED
+#define COEFF(c,t,l,s,e) (c) = (t) * (s)[e]
+#else
+#define COEFF(c,_t,_l,s,e) do {                                 \
+    quantizer_t t = (_t);                                       \
+    level_t l = (_l);                                           \
+    int shift = e - 5;                                          \
+    sample_t tmp = t * (l >> 16) + ((t * (l & 0xffff)) >> 16);  \
+    if (shift >= 0)                                             \
+        (c) = tmp >> shift;                                     \
+    else                                                        \
+        (c) = tmp << -shift;                                    \
+} while (0)
+#endif
+
+static void coeff_get (a52_state_t * state, sample_t * coeff,
+                       expbap_t * expbap, quantizer_set_t * quant,
+                       level_t level, int dither, int end)
+{
+    int i;
+    uint8_t * exp;
+    int8_t * bap;
+
+#ifndef LIBA52_FIXED
+    sample_t factor[25];
+
+    for (i = 0; i <= 24; i++)
+        factor[i] = scale_factor[i] * level;
+#endif
+
+    exp = expbap->exp;
+    bap = expbap->bap;
+
+    for (i = 0; i < end; i++) {
+        int bapi;
+
+        bapi = bap[i];
+        switch (bapi) {
+        case 0:
+            if (dither) {
+                COEFF (coeff[i], dither_gen (state), level, factor, exp[i]);
+                continue;
+            } else {
+                coeff[i] = 0;
+                continue;
+            }
+
+        case -1:
+            if (quant->q1_ptr >= 0) {
+                COEFF (coeff[i], quant->q1[quant->q1_ptr--], level,
+                       factor, exp[i]);
+                continue;
+            } else {
+                int code;
+
+                code = bitstream_get (state, 5);
+
+                quant->q1_ptr = 1;
+                quant->q1[0] = q_1_2[code];
+                quant->q1[1] = q_1_1[code];
+                COEFF (coeff[i], q_1_0[code], level, factor, exp[i]);
+                continue;
+            }
+
+        case -2:
+            if (quant->q2_ptr >= 0) {
+                COEFF (coeff[i], quant->q2[quant->q2_ptr--], level,
+                       factor, exp[i]);
+                continue;
+            } else {
+                int code;
+
+                code = bitstream_get (state, 7);
+
+                quant->q2_ptr = 1;
+                quant->q2[0] = q_2_2[code];
+                quant->q2[1] = q_2_1[code];
+                COEFF (coeff[i], q_2_0[code], level, factor, exp[i]);
+                continue;
+            }
+
+        case 3:
+            COEFF (coeff[i], q_3[bitstream_get (state, 3)], level,
+                   factor, exp[i]);
+            continue;
+
+        case -3:
+            if (quant->q4_ptr == 0) {
+                quant->q4_ptr = -1;
+                COEFF (coeff[i], quant->q4, level, factor, exp[i]);
+                continue;
+            } else {
+                int code;
+
+                code = bitstream_get (state, 7);
+
+                quant->q4_ptr = 0;
+                quant->q4 = q_4_1[code];
+                COEFF (coeff[i], q_4_0[code], level, factor, exp[i]);
+                continue;
+            }
+
+        case 4:
+            COEFF (coeff[i], q_5[bitstream_get (state, 4)], level,
+                   factor, exp[i]);
+            continue;
+
+        default:
+            COEFF (coeff[i], bitstream_get_2 (state, bapi) << (16 - bapi),
+                   level, factor, exp[i]);
+        }
+    }
+}
+
+static void coeff_get_coupling (a52_state_t * state, int nfchans,
+                                level_t * coeff, sample_t (* samples)[256],
+                                quantizer_set_t * quant, uint8_t dithflag[5])
+{
+    int cplbndstrc, bnd, i, i_end, ch;
+    uint8_t * exp;
+    int8_t * bap;
+    level_t cplco[5];
+
+    exp = state->cpl_expbap.exp;
+    bap = state->cpl_expbap.bap;
+    bnd = 0;
+    cplbndstrc = state->cplbndstrc;
+    i = state->cplstrtmant;
+    while (i < state->cplendmant) {
+        i_end = i + 12;
+        while (cplbndstrc & 1) {
+            cplbndstrc >>= 1;
+            i_end += 12;
+        }
+        cplbndstrc >>= 1;
+        for (ch = 0; ch < nfchans; ch++)
+            cplco[ch] = MUL_L (state->cplco[ch][bnd], coeff[ch]);
+        bnd++;
+
+        while (i < i_end) {
+            quantizer_t cplcoeff;
+            int bapi;
+
+            bapi = bap[i];
+            switch (bapi) {
+            case 0:
+                for (ch = 0; ch < nfchans; ch++)
+                    if ((state->chincpl >> ch) & 1) {
+                        if (dithflag[ch])
+#ifndef LIBA52_FIXED
+                            samples[ch][i] = (scale_factor[exp[i]] *
+                                              cplco[ch] * dither_gen (state));
+#else
+                            COEFF (samples[ch][i], dither_gen (state),
+                                   cplco[ch], scale_factor, exp[i]);
+#endif
+                        else
+                            samples[ch][i] = 0;
+                    }
+                i++;
+                continue;
+
+            case -1:
+                if (quant->q1_ptr >= 0) {
+                    cplcoeff = quant->q1[quant->q1_ptr--];
+                    break;
+                } else {
+                    int code;
+
+                    code = bitstream_get (state, 5);
+
+                    quant->q1_ptr = 1;
+                    quant->q1[0] = q_1_2[code];
+                    quant->q1[1] = q_1_1[code];
+                    cplcoeff = q_1_0[code];
+                    break;
+                }
+
+            case -2:
+                if (quant->q2_ptr >= 0) {
+                    cplcoeff = quant->q2[quant->q2_ptr--];
+                    break;
+                } else {
+                    int code;
+
+                    code = bitstream_get (state, 7);
+
+                    quant->q2_ptr = 1;
+                    quant->q2[0] = q_2_2[code];
+                    quant->q2[1] = q_2_1[code];
+                    cplcoeff = q_2_0[code];
+                    break;
+                }
+
+            case 3:
+                cplcoeff = q_3[bitstream_get (state, 3)];
+                break;
+
+            case -3:
+                if (quant->q4_ptr == 0) {
+                    quant->q4_ptr = -1;
+                    cplcoeff = quant->q4;
+                    break;
+                } else {
+                    int code;
+
+                    code = bitstream_get (state, 7);
+
+                    quant->q4_ptr = 0;
+                    quant->q4 = q_4_1[code];
+                    cplcoeff = q_4_0[code];
+                    break;
+                }
+
+            case 4:
+                cplcoeff = q_5[bitstream_get (state, 4)];
+                break;
+
+            default:
+                cplcoeff = bitstream_get_2 (state, bapi) << (16 - bapi);
+            }
+#ifndef LIBA52_FIXED
+            cplcoeff *= scale_factor[exp[i]];
+#endif
+            for (ch = 0; ch < nfchans; ch++)
+               if ((state->chincpl >> ch) & 1)
+#ifndef LIBA52_FIXED
+                    samples[ch][i] = cplcoeff * cplco[ch];
+#else
+                    COEFF (samples[ch][i], cplcoeff, cplco[ch],
+                           scale_factor, exp[i]);
+#endif
+            i++;
+        }
+    }
+}
+
+int a52_block (a52_state_t * state)
+{
+    static const uint8_t nfchans_tbl[] = {2, 1, 2, 3, 3, 4, 4, 5, 1, 1, 2};
+    static int rematrix_band[4] = {25, 37, 61, 253};
+    int i, nfchans, chaninfo;
+    uint8_t cplexpstr, chexpstr[5], lfeexpstr, do_bit_alloc, done_cpl;
+    uint8_t blksw[5], dithflag[5];
+    level_t coeff[5];
+    int chanbias;
+    quantizer_set_t quant;
+    sample_t * samples;
+
+    nfchans = nfchans_tbl[state->acmod];
+
+    for (i = 0; i < nfchans; i++)
+        blksw[i] = bitstream_get (state, 1);
+
+    for (i = 0; i < nfchans; i++)
+        dithflag[i] = bitstream_get (state, 1);
+
+    chaninfo = !state->acmod;
+    do {
+        if (bitstream_get (state, 1)) { /* dynrnge */
+            int dynrng;
+
+            dynrng = bitstream_get_2 (state, 8);
+            if (state->dynrnge) {
+                level_t range;
+
+#if !defined(LIBA52_FIXED)
+                range = ((((dynrng & 0x1f) | 0x20) << 13) *
+                         scale_factor[3 - (dynrng >> 5)]);
+#else
+                range = ((dynrng & 0x1f) | 0x20) << (21 + (dynrng >> 5));
+#endif
+                if (state->dynrngcall)
+                    range = state->dynrngcall (range, state->dynrngdata);
+                state->dynrng = MUL_L (state->level, range);
+            }
+        }
+    } while (chaninfo--);
+
+    if (bitstream_get (state, 1)) {     /* cplstre */
+        state->chincpl = 0;
+        if (bitstream_get (state, 1)) { /* cplinu */
+            static uint8_t bndtab[16] = {31, 35, 37, 39, 41, 42, 43, 44,
+                                         45, 45, 46, 46, 47, 47, 48, 48};
+            int cplbegf;
+            int cplendf;
+            int ncplsubnd;
+
+            for (i = 0; i < nfchans; i++)
+                state->chincpl |= bitstream_get (state, 1) << i;
+            switch (state->acmod) {
+            case 0: case 1:
+                return 1;
+            case 2:
+                state->phsflginu = bitstream_get (state, 1);
+            }
+            cplbegf = bitstream_get (state, 4);
+            cplendf = bitstream_get (state, 4);
+
+            if (cplendf + 3 - cplbegf < 0)
+                return 1;
+            state->ncplbnd = ncplsubnd = cplendf + 3 - cplbegf;
+            state->cplstrtbnd = bndtab[cplbegf];
+            state->cplstrtmant = cplbegf * 12 + 37;
+            state->cplendmant = cplendf * 12 + 73;
+
+            state->cplbndstrc = 0;
+            for (i = 0; i < ncplsubnd - 1; i++)
+                if (bitstream_get (state, 1)) {
+                    state->cplbndstrc |= 1 << i;
+                    state->ncplbnd--;
+                }
+        }
+    }
+
+    if (state->chincpl) {       /* cplinu */
+        int j, cplcoe;
+
+        cplcoe = 0;
+        for (i = 0; i < nfchans; i++)
+            if ((state->chincpl) >> i & 1)
+                if (bitstream_get (state, 1)) { /* cplcoe */
+                    int mstrcplco, cplcoexp, cplcomant;
+
+                    cplcoe = 1;
+                    mstrcplco = 3 * bitstream_get (state, 2);
+                    for (j = 0; j < state->ncplbnd; j++) {
+                        cplcoexp = bitstream_get (state, 4);
+                        cplcomant = bitstream_get (state, 4);
+                        if (cplcoexp == 15)
+                            cplcomant <<= 14;
+                        else
+                            cplcomant = (cplcomant | 0x10) << 13;
+#ifndef LIBA52_FIXED
+                        state->cplco[i][j] =
+                            cplcomant * scale_factor[cplcoexp + mstrcplco];
+#else
+                        state->cplco[i][j] = (cplcomant << 11) >> (cplcoexp + mstrcplco);
+#endif
+
+                    }
+                }
+        if ((state->acmod == 2) && state->phsflginu && cplcoe)
+            for (j = 0; j < state->ncplbnd; j++)
+                if (bitstream_get (state, 1))   /* phsflg */
+                    state->cplco[1][j] = -state->cplco[1][j];
+    }
+
+    if ((state->acmod == 2) && (bitstream_get (state, 1))) {    /* rematstr */
+        int end;
+
+        state->rematflg = 0;
+        end = (state->chincpl) ? state->cplstrtmant : 253;      /* cplinu */
+        i = 0;
+        do
+            state->rematflg |= bitstream_get (state, 1) << i;
+        while (rematrix_band[i++] < end);
+    }
+
+    cplexpstr = EXP_REUSE;
+    lfeexpstr = EXP_REUSE;
+    if (state->chincpl) /* cplinu */
+        cplexpstr = bitstream_get (state, 2);
+    for (i = 0; i < nfchans; i++)
+        chexpstr[i] = bitstream_get (state, 2);
+    if (state->lfeon) 
+        lfeexpstr = bitstream_get (state, 1);
+
+    for (i = 0; i < nfchans; i++)
+        if (chexpstr[i] != EXP_REUSE) {
+            if ((state->chincpl >> i) & 1)
+                state->endmant[i] = state->cplstrtmant;
+            else {
+                int chbwcod;
+
+                chbwcod = bitstream_get (state, 6);
+                if (chbwcod > 60)
+                    return 1;
+                state->endmant[i] = chbwcod * 3 + 73;
+            }
+        }
+
+    do_bit_alloc = 0;
+
+    if (cplexpstr != EXP_REUSE) {
+        int cplabsexp, ncplgrps;
+
+        do_bit_alloc = 64;
+        ncplgrps = ((state->cplendmant - state->cplstrtmant) /
+                    (3 << (cplexpstr - 1)));
+        cplabsexp = bitstream_get (state, 4) << 1;
+        if (parse_exponents (state, cplexpstr, ncplgrps, cplabsexp,
+                             state->cpl_expbap.exp + state->cplstrtmant))
+            return 1;
+    }
+    for (i = 0; i < nfchans; i++)
+        if (chexpstr[i] != EXP_REUSE) {
+            int grp_size, nchgrps;
+
+            do_bit_alloc |= 1 << i;
+            grp_size = 3 << (chexpstr[i] - 1);
+            nchgrps = (state->endmant[i] + grp_size - 4) / grp_size;
+            state->fbw_expbap[i].exp[0] = bitstream_get (state, 4);
+            if (parse_exponents (state, chexpstr[i], nchgrps,
+                                 state->fbw_expbap[i].exp[0],
+                                 state->fbw_expbap[i].exp + 1))
+                return 1;
+            bitstream_get (state, 2);   /* gainrng */
+        }
+    if (lfeexpstr != EXP_REUSE) {
+        do_bit_alloc |= 32;
+        state->lfe_expbap.exp[0] = bitstream_get (state, 4);
+        if (parse_exponents (state, lfeexpstr, 2, state->lfe_expbap.exp[0],
+                             state->lfe_expbap.exp + 1))
+            return 1;
+    }
+
+    if (bitstream_get (state, 1)) {     /* baie */
+        do_bit_alloc = 127;
+        state->bai = bitstream_get (state, 11);
+    }
+    if (bitstream_get (state, 1)) {     /* snroffste */
+        do_bit_alloc = 127;
+        state->csnroffst = bitstream_get (state, 6);
+        if (state->chincpl)     /* cplinu */
+            state->cplba.bai = bitstream_get (state, 7);
+        for (i = 0; i < nfchans; i++)
+            state->ba[i].bai = bitstream_get (state, 7);
+        if (state->lfeon)
+            state->lfeba.bai = bitstream_get (state, 7);
+    }
+    if ((state->chincpl) && (bitstream_get (state, 1))) { /* cplleake */
+        do_bit_alloc |= 64;
+        state->cplfleak = 9 - bitstream_get (state, 3);
+        state->cplsleak = 9 - bitstream_get (state, 3);
+    }
+
+    if (bitstream_get (state, 1)) {     /* deltbaie */
+        do_bit_alloc = 127;
+        if (state->chincpl)     /* cplinu */
+            state->cplba.deltbae = bitstream_get (state, 2);
+        for (i = 0; i < nfchans; i++)
+            state->ba[i].deltbae = bitstream_get (state, 2);
+        if (state->chincpl &&   /* cplinu */
+            (state->cplba.deltbae == DELTA_BIT_NEW) &&
+            parse_deltba (state, state->cplba.deltba))
+            return 1;
+        for (i = 0; i < nfchans; i++)
+            if ((state->ba[i].deltbae == DELTA_BIT_NEW) &&
+                parse_deltba (state, state->ba[i].deltba))
+                return 1;
+    }
+
+    if (do_bit_alloc) {
+        if (zero_snr_offsets (nfchans, state)) {
+            memset (state->cpl_expbap.bap, 0, sizeof (state->cpl_expbap.bap));
+            for (i = 0; i < nfchans; i++)
+                memset (state->fbw_expbap[i].bap, 0,
+                        sizeof (state->fbw_expbap[i].bap));
+            memset (state->lfe_expbap.bap, 0, sizeof (state->lfe_expbap.bap));
+        } else {
+            if (state->chincpl && (do_bit_alloc & 64))  /* cplinu */
+                a52_bit_allocate (state, &state->cplba, state->cplstrtbnd,
+                                  state->cplstrtmant, state->cplendmant,
+                                  state->cplfleak << 8, state->cplsleak << 8,
+                                  &state->cpl_expbap);
+            for (i = 0; i < nfchans; i++)
+                if (do_bit_alloc & (1 << i))
+                    a52_bit_allocate (state, state->ba + i, 0, 0,
+                                      state->endmant[i], 0, 0,
+                                      state->fbw_expbap +i);
+            if (state->lfeon && (do_bit_alloc & 32)) {
+                state->lfeba.deltbae = DELTA_BIT_NONE;
+                a52_bit_allocate (state, &state->lfeba, 0, 0, 7, 0, 0,
+                                  &state->lfe_expbap);
+            }
+        }
+    }
+
+    if (bitstream_get (state, 1)) {     /* skiple */
+        i = bitstream_get (state, 9);   /* skipl */
+        while (i--)
+            bitstream_get (state, 8);
+    }
+
+    samples = state->samples;
+    if (state->output & A52_LFE)
+        samples += 256; /* shift for LFE channel */
+
+    chanbias = a52_downmix_coeff (coeff, state->acmod, state->output,
+                                  state->dynrng, state->clev, state->slev);
+
+    quant.q1_ptr = quant.q2_ptr = quant.q4_ptr = -1;
+    done_cpl = 0;
+
+    for (i = 0; i < nfchans; i++) {
+        int j;
+
+        coeff_get (state, samples + 256 * i, state->fbw_expbap +i, &quant,
+                   coeff[i], dithflag[i], state->endmant[i]);
+
+        if ((state->chincpl >> i) & 1) {
+            if (!done_cpl) {
+                done_cpl = 1;
+                coeff_get_coupling (state, nfchans, coeff,
+                                    (sample_t (*)[256])samples, &quant,
+                                    dithflag);
+            }
+            j = state->cplendmant;
+        } else
+            j = state->endmant[i];
+        do
+            (samples + 256 * i)[j] = 0;
+        while (++j < 256);
+    }
+
+    if (state->acmod == 2) {
+        int j, end, band, rematflg;
+
+        end = ((state->endmant[0] < state->endmant[1]) ?
+               state->endmant[0] : state->endmant[1]);
+
+        i = 0;
+        j = 13;
+        rematflg = state->rematflg;
+        do {
+            if (! (rematflg & 1)) {
+                rematflg >>= 1;
+                j = rematrix_band[i++];
+                continue;
+            }
+            rematflg >>= 1;
+            band = rematrix_band[i++];
+            if (band > end)
+                band = end;
+            do {
+                sample_t tmp0, tmp1;
+
+                tmp0 = samples[j];
+                tmp1 = (samples+256)[j];
+                samples[j] = tmp0 + tmp1;
+                (samples+256)[j] = tmp0 - tmp1;
+            } while (++j < band);
+        } while (j < end);
+    }
+
+    if (state->lfeon) {
+        if (state->output & A52_LFE) {
+            coeff_get (state, samples - 256, &state->lfe_expbap, &quant,
+                       state->dynrng, 0, 7);
+            for (i = 7; i < 256; i++)
+                (samples-256)[i] = 0;
+            a52_imdct_512 (samples - 256, samples + 1536 - 256);
+        } else {
+            /* just skip the LFE coefficients */
+            coeff_get (state, samples + 1280, &state->lfe_expbap, &quant,
+                       0, 0, 7);
+        }
+    }
+
+    i = 0;
+    if (nfchans_tbl[state->output & A52_CHANNEL_MASK] < nfchans)
+        for (i = 1; i < nfchans; i++)
+            if (blksw[i] != blksw[0])
+                break;
+
+    if (i < nfchans) {
+        if (state->downmixed) {
+            state->downmixed = 0;
+            a52_upmix (samples + 1536, state->acmod, state->output);
+        }
+
+        for (i = 0; i < nfchans; i++) {
+            sample_t bias;
+
+            bias = 0;
+            if (!(chanbias & (1 << i)))
+                bias = state->bias;
+
+            if (coeff[i]) {
+                if (blksw[i])
+                    a52_imdct_256 (samples + 256 * i, samples + 1536 + 256 * i);
+                else 
+                    a52_imdct_512 (samples + 256 * i, samples + 1536 + 256 * i);
+            } else {
+                int j;
+
+                for (j = 0; j < 256; j++)
+                    (samples + 256 * i)[j] = bias;
+            }
+        }
+
+        a52_downmix (samples, state->acmod, state->output,
+                     state->clev, state->slev);
+    } else {
+        nfchans = nfchans_tbl[state->output & A52_CHANNEL_MASK];
+
+        a52_downmix (samples, state->acmod, state->output,
+                     state->clev, state->slev);
+
+        if (!state->downmixed) {
+            state->downmixed = 1;
+            a52_downmix (samples + 1536, state->acmod, state->output,
+                         state->clev, state->slev);
+        }
+
+        if (blksw[0])
+            for (i = 0; i < nfchans; i++)
+                a52_imdct_256 (samples + 256 * i, samples + 1536 + 256 * i);
+        else 
+            for (i = 0; i < nfchans; i++)
+                a52_imdct_512 (samples + 256 * i, samples + 1536 + 256 * i);
+    }
+
+    return 0;
+}
+
+void a52_free (a52_state_t * state)
+{
+    (void)state;
+    /*
+    free (state->samples);
+    free (state);
+    */
+}
diff --git a/lib/rbcodec/codecs/liba52/tables.h b/lib/rbcodec/codecs/liba52/tables.h
new file mode 100644
index 0000000000..b067c63f69
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/tables.h
@@ -0,0 +1,246 @@
+/*
+ * tables.h
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+static const int8_t exp_1[128] = {
+    -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+    -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+    25,25,25
+};
+static const int8_t exp_2[128] = {
+    -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
+    -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
+    -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
+    -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
+    -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,
+    25,25,25
+};
+static const int8_t exp_3[128] = {
+    -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
+    -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
+    -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
+    -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
+    -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,
+    25,25,25
+};
+
+#define Q(x) ROUND (32768.0 * x)
+
+#define Q0 Q (-2/3)
+#define Q1 Q (0)
+#define Q2 Q (2/3)
+
+static const quantizer_t q_1_0[32] = {
+    Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,
+    Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,
+    Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,
+    0,  0,  0,  0,  0
+};
+
+static const quantizer_t q_1_1[32] = {
+    Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,
+    Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,
+    Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,
+    0,  0,  0,  0,  0
+};
+
+static const quantizer_t q_1_2[32] = {
+    Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,
+    Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,
+    Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,
+    0,  0,  0,  0,  0
+};
+
+#undef Q0
+#undef Q1
+#undef Q2
+
+#define Q0 Q (-4/5)
+#define Q1 Q (-2/5)
+#define Q2 Q (0)
+#define Q3 Q (2/5)
+#define Q4 Q (4/5)
+
+static const quantizer_t q_2_0[128] = {
+    Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,
+    Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,
+    Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,
+    Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,
+    Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,
+    0,0,0
+};
+
+static const quantizer_t q_2_1[128] = {
+    Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
+    Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
+    Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
+    Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
+    Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,
+    0,0,0
+};
+
+static const quantizer_t q_2_2[128] = {
+    Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
+    Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
+    Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
+    Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
+    Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,
+    0,0,0
+};
+
+#undef Q0
+#undef Q1
+#undef Q2
+#undef Q3
+#undef Q4
+
+static const quantizer_t q_3[8] = {
+    Q (-6/7), Q (-4/7), Q (-2/7), Q (0), Q (2/7), Q (4/7), Q (6/7), 0
+};
+
+#define Q0 Q (-10/11)
+#define Q1 Q (-8/11)
+#define Q2 Q (-6/11)
+#define Q3 Q (-4/11)
+#define Q4 Q (-2/11)
+#define Q5 Q (0)
+#define Q6 Q (2/11)
+#define Q7 Q (4/11)
+#define Q8 Q (6/11)
+#define Q9 Q (8/11)
+#define QA Q (10/11)
+
+static const quantizer_t q_4_0[128] = {
+    Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,
+    Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,
+    Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,
+    Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3,
+    Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4,
+    Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5,
+    Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6,
+    Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7,
+    Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8,
+    Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9,
+    QA, QA, QA, QA, QA, QA, QA, QA, QA, QA, QA,
+    0,  0,  0,  0,  0,  0,  0
+};
+
+static const quantizer_t q_4_1[128] = {
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,
+    0,  0,  0,  0,  0,  0,  0
+};
+
+#undef Q0
+#undef Q1
+#undef Q2
+#undef Q3
+#undef Q4
+#undef Q5
+#undef Q6
+#undef Q7
+#undef Q8
+#undef Q9
+#undef QA
+
+static const quantizer_t q_5[16] = {
+    Q (-14/15), Q (-12/15), Q (-10/15), Q (-8/15), Q (-6/15),
+    Q (-4/15), Q (-2/15), Q (0), Q (2/15), Q (4/15),
+    Q (6/15), Q (8/15), Q (10/15), Q (12/15), Q (14/15), 0
+};
+
+#ifndef LIBA52_FIXED
+static const sample_t scale_factor[25] = {
+    0.000030517578125,
+    0.0000152587890625,
+    0.00000762939453125,
+    0.000003814697265625,
+    0.0000019073486328125,
+    0.00000095367431640625,
+    0.000000476837158203125,
+    0.0000002384185791015625,
+    0.00000011920928955078125,
+    0.000000059604644775390625,
+    0.0000000298023223876953125,
+    0.00000001490116119384765625,
+    0.000000007450580596923828125,
+    0.0000000037252902984619140625,
+    0.00000000186264514923095703125,
+    0.000000000931322574615478515625,
+    0.0000000004656612873077392578125,
+    0.00000000023283064365386962890625,
+    0.000000000116415321826934814453125,
+    0.0000000000582076609134674072265625,
+    0.00000000002910383045673370361328125,
+    0.000000000014551915228366851806640625,
+    0.0000000000072759576141834259033203125,
+    0.00000000000363797880709171295166015625,
+    0.000000000001818989403545856475830078125
+};
+#endif
+
+static const uint16_t dither_lut[256] = {
+    0x0000, 0xa011, 0xe033, 0x4022, 0x6077, 0xc066, 0x8044, 0x2055,
+    0xc0ee, 0x60ff, 0x20dd, 0x80cc, 0xa099, 0x0088, 0x40aa, 0xe0bb,
+    0x21cd, 0x81dc, 0xc1fe, 0x61ef, 0x41ba, 0xe1ab, 0xa189, 0x0198,
+    0xe123, 0x4132, 0x0110, 0xa101, 0x8154, 0x2145, 0x6167, 0xc176,
+    0x439a, 0xe38b, 0xa3a9, 0x03b8, 0x23ed, 0x83fc, 0xc3de, 0x63cf,
+    0x8374, 0x2365, 0x6347, 0xc356, 0xe303, 0x4312, 0x0330, 0xa321,
+    0x6257, 0xc246, 0x8264, 0x2275, 0x0220, 0xa231, 0xe213, 0x4202,
+    0xa2b9, 0x02a8, 0x428a, 0xe29b, 0xc2ce, 0x62df, 0x22fd, 0x82ec,
+    0x8734, 0x2725, 0x6707, 0xc716, 0xe743, 0x4752, 0x0770, 0xa761,
+    0x47da, 0xe7cb, 0xa7e9, 0x07f8, 0x27ad, 0x87bc, 0xc79e, 0x678f,
+    0xa6f9, 0x06e8, 0x46ca, 0xe6db, 0xc68e, 0x669f, 0x26bd, 0x86ac,
+    0x6617, 0xc606, 0x8624, 0x2635, 0x0660, 0xa671, 0xe653, 0x4642,
+    0xc4ae, 0x64bf, 0x249d, 0x848c, 0xa4d9, 0x04c8, 0x44ea, 0xe4fb,
+    0x0440, 0xa451, 0xe473, 0x4462, 0x6437, 0xc426, 0x8404, 0x2415,
+    0xe563, 0x4572, 0x0550, 0xa541, 0x8514, 0x2505, 0x6527, 0xc536,
+    0x258d, 0x859c, 0xc5be, 0x65af, 0x45fa, 0xe5eb, 0xa5c9, 0x05d8,
+    0xae79, 0x0e68, 0x4e4a, 0xee5b, 0xce0e, 0x6e1f, 0x2e3d, 0x8e2c,
+    0x6e97, 0xce86, 0x8ea4, 0x2eb5, 0x0ee0, 0xaef1, 0xeed3, 0x4ec2,
+    0x8fb4, 0x2fa5, 0x6f87, 0xcf96, 0xefc3, 0x4fd2, 0x0ff0, 0xafe1,
+    0x4f5a, 0xef4b, 0xaf69, 0x0f78, 0x2f2d, 0x8f3c, 0xcf1e, 0x6f0f,
+    0xede3, 0x4df2, 0x0dd0, 0xadc1, 0x8d94, 0x2d85, 0x6da7, 0xcdb6,
+    0x2d0d, 0x8d1c, 0xcd3e, 0x6d2f, 0x4d7a, 0xed6b, 0xad49, 0x0d58,
+    0xcc2e, 0x6c3f, 0x2c1d, 0x8c0c, 0xac59, 0x0c48, 0x4c6a, 0xec7b,
+    0x0cc0, 0xacd1, 0xecf3, 0x4ce2, 0x6cb7, 0xcca6, 0x8c84, 0x2c95,
+    0x294d, 0x895c, 0xc97e, 0x696f, 0x493a, 0xe92b, 0xa909, 0x0918,
+    0xe9a3, 0x49b2, 0x0990, 0xa981, 0x89d4, 0x29c5, 0x69e7, 0xc9f6,
+    0x0880, 0xa891, 0xe8b3, 0x48a2, 0x68f7, 0xc8e6, 0x88c4, 0x28d5,
+    0xc86e, 0x687f, 0x285d, 0x884c, 0xa819, 0x0808, 0x482a, 0xe83b,
+    0x6ad7, 0xcac6, 0x8ae4, 0x2af5, 0x0aa0, 0xaab1, 0xea93, 0x4a82,
+    0xaa39, 0x0a28, 0x4a0a, 0xea1b, 0xca4e, 0x6a5f, 0x2a7d, 0x8a6c,
+    0x4b1a, 0xeb0b, 0xab29, 0x0b38, 0x2b6d, 0x8b7c, 0xcb5e, 0x6b4f,
+    0x8bf4, 0x2be5, 0x6bc7, 0xcbd6, 0xeb83, 0x4b92, 0x0bb0, 0xaba1
+};
diff --git a/lib/rbcodec/codecs/liba52/tendra.h b/lib/rbcodec/codecs/liba52/tendra.h
new file mode 100644
index 0000000000..cc740fceeb
--- /dev/null
+++ b/lib/rbcodec/codecs/liba52/tendra.h
@@ -0,0 +1,35 @@
+/*
+ * tendra.h
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of a52dec, a free ATSC A-52 stream decoder.
+ * See http://liba52.sourceforge.net/ for updates.
+ *
+ * a52dec 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.
+ *
+ * a52dec 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#pragma TenDRA begin
+#pragma TenDRA longlong type warning
+
+#ifdef TenDRA_check
+
+#pragma TenDRA conversion analysis (pointer-int explicit) off
+#pragma TenDRA implicit function declaration off
+
+/* avoid the "No declarations in translation unit" problem */
+int TenDRA;
+
+#endif /* TenDRA_check */