Added license boilerplate to all source files.

Change-Id: I42a702487e6db4953dca0027710ea4fe266052fd
Also:
 - Removed dead code in several source files.
 - Minor changes in comments.
 - No functional changes. No changes in executed code.
 - Added documentation PDFs.

1 files changed, 87 insertions, 31 deletions

diff --git a/libFDK/include/common_fix.h b/libFDK/include/common_fix.h
index c5cbd8a..83d4ba3 100644
--- a/libFDK/include/common_fix.h
+++ b/libFDK/include/common_fix.h
@@ -1,29 +1,91 @@
-/***************************  Fraunhofer IIS FDK Tools  **********************
 
-                        (C) Copyright Fraunhofer IIS (2002)
-                               All Rights Reserved
+/* -----------------------------------------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+  All rights reserved.
+
+ 1.    INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
+the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
+This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
+audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
+independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
+of the MPEG specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
+may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
+individually for the purpose of encoding or decoding bit streams in products that are compliant with
+the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
+these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
+software may already be covered under those patent licenses when it is used for those licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
+are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
+applications information and documentation.
+
+2.    COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification, are permitted without
+payment of copyright license fees provided that you satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
+your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation and/or other materials
+provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
+You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived from this library without
+prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
+software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
+and the date of any change. For modified versions of the FDK AAC Codec, the term
+"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
+"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
+
+3.    NO PATENT LICENSE
 
-    Please be advised that this software and/or program delivery is
-    Confidential Information of Fraunhofer and subject to and covered by the
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
+ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
+respect to this software.
 
-    Fraunhofer IIS Software Evaluation Agreement
-    between Google Inc. and  Fraunhofer
-    effective and in full force since March 1, 2012.
+You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
+by appropriate patent licenses.
 
-    You may use this software and/or program only under the terms and
-    conditions described in the above mentioned Fraunhofer IIS Software
-    Evaluation Agreement. Any other and/or further use requires a separate agreement.
+4.    DISCLAIMER
 
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
+"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
+of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
+including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
+or business interruption, however caused and on any theory of liability, whether in contract, strict
+liability, or tort (including negligence), arising in any way out of the use of this software, even if
+advised of the possibility of such damage.
+
+5.    CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------------------------------------- */
+
+/***************************  Fraunhofer IIS FDK Tools  **********************
 
-   $Id$
    Author(s):   M. Lohwasser, M. Gayer
    Description: Flexible fixpoint library configuration
 
-   This software and/or program is protected by copyright law and international
-   treaties. Any reproduction or distribution of this software and/or program,
-   or any portion of it, may result in severe civil and criminal penalties, and
-   will be prosecuted to the maximum extent possible under law.
-
 ******************************************************************************/
 
 #ifndef _COMMON_FIX_H
@@ -38,9 +100,6 @@
   #define FIX_FRACT 0 /* Define this to "1" to use fractional arithmetic simulation in class fract instead of integer arithmetic */
                       /* 1 for debug with extra runtime overflow checking.                                                      */
 
-/* Truncate -1.0 to -1.0 + 1/(D)FRACT_FIX_SCALE */
-//#define FRACT_TRUNC_MINUSONE
-
 /* Define bit sizes of integer fixpoint fractional data types */
 #define FRACT_BITS      16 /* single precision */
 #define DFRACT_BITS     32 /* double precision */
@@ -92,13 +151,8 @@
 /* macros for compile-time conversion of constant float values to fixedpoint */
 #define FL2FXCONST_SPC FL2FXCONST_DBL
 
-#ifdef FRACT_TRUNC_MINUSONE
-#define MINVAL_DBL_CONST MINVAL_DBL+1
-#define MINVAL_SGL_CONST MINVAL_SGL+1
-#else
 #define MINVAL_DBL_CONST MINVAL_DBL
 #define MINVAL_SGL_CONST MINVAL_SGL
-#endif
 
 #define FL2FXCONST_SGL(val)                                                                                                     \
 (FIXP_SGL)( ( (val) >= 0) ?                                                                                                               \
@@ -171,6 +225,7 @@ FDK_INLINE FIXP_DBL fAbs(FIXP_DBL x)
 FDK_INLINE FIXP_SGL fAbs(FIXP_SGL x)
                 { return fixabs_S(x); }
 
+
 /* workaround for TI C6x compiler but not for TI ARM9E compiler */
 #if (!defined(__TI_COMPILER_VERSION__) || defined(__TI_TMS470_V5__)) && !defined(__x86_64__)
 FDK_INLINE INT  fAbs(INT x)
@@ -185,9 +240,9 @@ FDK_INLINE INT fNormz(FIXP_DBL x)
                { return fixnormz_D(x); }
 FDK_INLINE INT fNormz(FIXP_SGL x)
                { return fixnormz_S(x); }
-FDK_INLINE INT fNorm(FIXP_DBL x) 
+FDK_INLINE INT fNorm(FIXP_DBL x)
                { return fixnorm_D(x); }
-FDK_INLINE INT fNorm(FIXP_SGL x) 
+FDK_INLINE INT fNorm(FIXP_SGL x)
                { return fixnorm_S(x); }
 
 
@@ -281,6 +336,7 @@ FDK_INLINE FIXP_SGL fMin(FIXP_SGL a, FIXP_SGL b)
 FDK_INLINE FIXP_SGL fMax(FIXP_SGL a, FIXP_SGL b)
                 { return fixmax_S(a,b); }
 
+
 /* workaround for TI C6x compiler but not for TI ARM9E */
 #if ((!defined(__TI_COMPILER_VERSION__) || defined(__TI_TMS470_V5__)) && !defined(__x86_64__)) || (FIX_FRACT == 1)
 FDK_INLINE INT fMax(INT a, INT b)
@@ -297,19 +353,19 @@ inline UINT fMin(UINT a, UINT b)
 /* Complex data types */
 typedef shouldBeUnion {
   /* vector representation for arithmetic */
-  struct { 
+  struct {
     FIXP_SGL re;
-    FIXP_SGL im; 
+    FIXP_SGL im;
   } v;
   /* word representation for memory move */
   LONG w;
 } FIXP_SPK;
 
-typedef shouldBeUnion { 
+typedef shouldBeUnion {
   /* vector representation for arithmetic */
   struct {
     FIXP_DBL re;
-    FIXP_DBL im; 
+    FIXP_DBL im;
   } v;
   /* word representation for memory move */
   INT64 w;