3GPP AMR Adaptive Multi-Rate - Wideband (AMR-WB) Speech Codec Shared Library

3GPP released reference implementation of 3GPP AMR Adaptive Multi-Rate -
Wideband (AMR-WB) Speech Codec (3GPP TS 26.204 V6.0.0).

http://www.3gpp.org/ftp/Specs/html-info/26204.htm

Reference implementation is available as a source code, but the code uses
#define to choose code options. In world of GNU-Linux, there is a common
practice to compile such code as a shared library.

This package converts 3GPP TS 26.204 V6.0.0 reference implementation of AMR-WB
to a shared library. It has exactly the same API, but some calls are wrapped by
macros to call proper variant of the function.

It supports following define:
-DIF2

For more see readme.txt and 26204-600.doc, which comes with the original code.

Please note, that this wrapper does not fix any bugs of original code,
especially it does not fix known crashes on input files with different format
than expected. I will accept patches for it, if 3GPP will not release fixed
implementation.

To use package compiled by this code, you may need a license from 3GPP.

It is possible to distribute these packages in three source forms:
1. As a wrapper-only source (as you can build by "make extradist").
2. As a full source code including 3GPP code (as you can build by "make dist").
3. As a wrapper-only source accompanied by the original zip file.

Package home page: http://www.penguin.cz/~utx/amr

For problems with the shared library wrapper or building code please contact
Stanislav Brabec <utx@penguin.cz>

For problems with the implementation, contact 3GPP.

Technical notes:

The code has two branches depending on IF2 define status. It's not much
useful while creating library. So it contains two variants of code using
different defines and modifies the header to select proper version
during compilation of the application using this library.

In addition to "make dist", you can also call "make extradist", which
builds distribution package containing LGPL wrapper only.
