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+
+/* -----------------------------------------------------------------------------------------------------------
+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
+
+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.
+
+You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
+by appropriate patent licenses.
+
+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
+----------------------------------------------------------------------------------------------------------- */
+
+/*****************************  MPEG-4 AAC Decoder  ***************************
+
+   Author(s):   Robert Weidner (DSP Solutions)
+   Description: HCR Decoder: Defines of state-constants, masks and
+                state-prototypes
+
+*******************************************************************************/
+
+#ifndef _AACDEC_HCRS_H_
+#define _AACDEC_HCRS_H_
+
+
+
+#include "FDK_bitstream.h"
+#include "aacdec_hcr_types.h"
+                                                    /* The four different kinds of types of states are:                     */
+/* different states are defined as constants */     /* start   middle=self   next   stop                                    */
+#define  STOP_THIS_STATE             0              /*                                                                      */
+#define  BODY_ONLY                   1              /*   X          X                X                                      */
+#define  BODY_SIGN__BODY             2              /*   X          X         X      X [stop if no sign]                    */
+#define  BODY_SIGN__SIGN             3              /*              X                X [stop if sign bits decoded]          */
+#define  BODY_SIGN_ESC__BODY         4              /*   X          X         X      X [stop if no sign]                    */
+#define  BODY_SIGN_ESC__SIGN         5              /*              X         X      X [stop if no escape sequence]         */
+#define  BODY_SIGN_ESC__ESC_PREFIX   6              /*              X         X                                             */
+#define  BODY_SIGN_ESC__ESC_WORD     7              /*              X         X      X [stop if abs(second qsc) != 16]      */
+
+/* examples: */
+
+/* BODY_ONLY                    means only the codeword body will be decoded; no sign bits will follow and no escapesequence will follow */
+
+/* BODY_SIGN__BODY              means that the codeword consists of two parts; body and sign part. The part '__BODY' after the two underscores shows */
+/*                              that the bits which are currently decoded belong to the '__BODY' of the codeword and not to the sign part. */
+
+/* BODY_SIGN_ESC__ESC_PB        means that the codeword consists of three parts; body, sign and (here: two) escape sequences;  */
+/*                              P = Prefix = ones */
+/*                              W = Escape Word */
+/*                              A = first possible (of two) Escape sequeces */
+/*                              B = second possible (of two) Escape sequeces */
+/*                              The part after the two underscores shows that the current bits which are decoded belong to the '__ESC_PB' - part of the */
+/*                              codeword. That means the body and the sign bits are decoded completely and the bits which are decoded now belong to */
+/*                              the escape sequence [P = prefix; B=second possible escape sequence] */
+
+
+#define   MSB_31_MASK                       0x80000000              /* masks MSB (= Bit 31) in a 32 bit word */
+#define   DIMENSION_OF_ESCAPE_CODEBOOK      2                       /* for cb >= 11 is dimension 2 */
+#define   ESCAPE_CODEBOOK                   11
+
+#define   MASK_ESCAPE_PREFIX_UP             0x000F0000
+#define   LSB_ESCAPE_PREFIX_UP              16
+
+#define   MASK_ESCAPE_PREFIX_DOWN           0x0000F000
+#define   LSB_ESCAPE_PREFIX_DOWN            12
+
+#define   MASK_ESCAPE_WORD                  0x00000FFF
+#define   MASK_FLAG_A                       0x00200000
+#define   MASK_FLAG_B                       0x00100000
+
+
+extern void DecodeNonPCWs(HANDLE_FDK_BITSTREAM bs, H_HCR_INFO hHcr);
+
+UINT Hcr_State_BODY_ONLY                 (HANDLE_FDK_BITSTREAM, void*);
+UINT Hcr_State_BODY_SIGN__BODY           (HANDLE_FDK_BITSTREAM, void*);
+UINT Hcr_State_BODY_SIGN__SIGN           (HANDLE_FDK_BITSTREAM, void*);
+UINT Hcr_State_BODY_SIGN_ESC__BODY       (HANDLE_FDK_BITSTREAM, void*);
+UINT Hcr_State_BODY_SIGN_ESC__SIGN       (HANDLE_FDK_BITSTREAM, void*);
+UINT Hcr_State_BODY_SIGN_ESC__ESC_PREFIX (HANDLE_FDK_BITSTREAM, void*);
+UINT Hcr_State_BODY_SIGN_ESC__ESC_WORD   (HANDLE_FDK_BITSTREAM, void*);
+
+#endif /* _AACDEC_HCRS_H_ */
+