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authorThe Android Open Source Project <initial-contribution@android.com>2012-07-11 10:15:24 -0700
committerThe Android Open Source Project <initial-contribution@android.com>2012-07-11 10:15:24 -0700
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tree57f3d390ebb0782cc0de0fb984c8ea7e45b4f386 /libSBRdec/src/sbr_rom.h
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Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54
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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
+----------------------------------------------------------------------------------------------------------- */
+
+/*!
+\file
+\brief Declaration of constant tables
+
+*/
+#ifndef __rom_H
+#define __rom_H
+
+#include "sbrdecoder.h"
+#include "env_extr.h"
+#include "qmf.h"
+
+#define INV_INT_TABLE_SIZE 49
+#define SBR_NF_NO_RANDOM_VAL 512 /*!< Size of random number array for noise floor */
+
+/*
+ Frequency scales
+*/
+extern const UCHAR FDK_sbrDecoder_sbr_start_freq_16[16];
+extern const UCHAR FDK_sbrDecoder_sbr_start_freq_22[16];
+extern const UCHAR FDK_sbrDecoder_sbr_start_freq_24[16];
+extern const UCHAR FDK_sbrDecoder_sbr_start_freq_32[16];
+extern const UCHAR FDK_sbrDecoder_sbr_start_freq_40[16];
+extern const UCHAR FDK_sbrDecoder_sbr_start_freq_44[16];
+extern const UCHAR FDK_sbrDecoder_sbr_start_freq_48[16];
+
+/*
+ Low-Power-Profile Transposer
+*/
+#define NUM_WHFACTOR_TABLE_ENTRIES 9
+extern const USHORT FDK_sbrDecoder_sbr_whFactorsIndex[NUM_WHFACTOR_TABLE_ENTRIES];
+extern const FIXP_DBL FDK_sbrDecoder_sbr_whFactorsTable[NUM_WHFACTOR_TABLE_ENTRIES][6];
+
+
+
+/*
+ Envelope Adjustor
+*/
+extern const FIXP_SGL FDK_sbrDecoder_sbr_limGains_m[4];
+extern const UCHAR FDK_sbrDecoder_sbr_limGains_e[4];
+extern const FIXP_SGL FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4[4];
+extern const FIXP_SGL FDK_sbrDecoder_sbr_smoothFilter[4];
+extern const FIXP_SGL FDK_sbrDecoder_sbr_randomPhase[SBR_NF_NO_RANDOM_VAL][2];
+extern const FIXP_SGL harmonicPhaseX [2][4];
+
+/*
+ Envelope Extractor
+*/
+extern const int FDK_sbrDecoder_envelopeTable_8 [8][5];
+extern const int FDK_sbrDecoder_envelopeTable_15 [15][6];
+extern const int FDK_sbrDecoder_envelopeTable_16 [16][6];
+
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_15;
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_15;
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_15;
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_15;
+
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_16;
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_16;
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_16;
+extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_16;
+
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10T[120][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10F[120][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10T[48][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10F[48][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11T[62][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11F[62][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11T[24][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11F[24][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseLevel11T[62][2];
+extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseBalance11T[24][2];
+
+
+/*
+ Parametric stereo
+*/
+
+
+extern const FIXP_DBL decayScaleFactTable[NO_QMF_CHANNELS];
+
+/* FIX_BORDER can have 0, 1, 2, 4 envelops */
+extern const UCHAR FDK_sbrDecoder_aFixNoEnvDecode[4];
+
+/* IID & ICC Huffman codebooks */
+extern const SCHAR aBookPsIidTimeDecode[28][2];
+extern const SCHAR aBookPsIidFreqDecode[28][2];
+extern const SCHAR aBookPsIccTimeDecode[14][2];
+extern const SCHAR aBookPsIccFreqDecode[14][2];
+
+/* IID-fine Huffman codebooks */
+
+extern const SCHAR aBookPsIidFineTimeDecode[60][2];
+extern const SCHAR aBookPsIidFineFreqDecode[60][2];
+
+/* the values of the following 3 tables are shiftet right by 1 ! */
+extern const FIXP_DBL ScaleFactors[NO_IID_LEVELS];
+extern const FIXP_DBL ScaleFactorsFine[NO_IID_LEVELS_FINE];
+extern const FIXP_DBL Alphas[NO_ICC_LEVELS];
+
+#if defined(ARCH_PREFER_MULT_32x16)
+extern const FIXP_SGL aAllpassLinkDecaySer[NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_SGL aaFractDelayPhaseFactorReQmf[NO_QMF_CHANNELS];
+extern const FIXP_SGL aaFractDelayPhaseFactorImQmf[NO_QMF_CHANNELS];
+extern const FIXP_SGL aaFractDelayPhaseFactorReSubQmf20[NO_SUB_QMF_CHANNELS];
+extern const FIXP_SGL aaFractDelayPhaseFactorImSubQmf20[NO_SUB_QMF_CHANNELS];
+
+extern const FIXP_SGL aaFractDelayPhaseFactorSerReQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_SGL aaFractDelayPhaseFactorSerImQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_SGL aaFractDelayPhaseFactorSerReSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_SGL aaFractDelayPhaseFactorSerImSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+
+extern const FIXP_SGL p8_13_20[13];
+extern const FIXP_SGL p2_13_20[13];
+
+#else
+extern const FIXP_DBL aAllpassLinkDecaySer[NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_DBL aaFractDelayPhaseFactorReQmf[NO_QMF_CHANNELS];
+extern const FIXP_DBL aaFractDelayPhaseFactorImQmf[NO_QMF_CHANNELS];
+extern const FIXP_DBL aaFractDelayPhaseFactorReSubQmf20[NO_SUB_QMF_CHANNELS];
+extern const FIXP_DBL aaFractDelayPhaseFactorImSubQmf20[NO_SUB_QMF_CHANNELS];
+
+extern const FIXP_DBL aaFractDelayPhaseFactorSerReQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_DBL aaFractDelayPhaseFactorSerImQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_DBL aaFractDelayPhaseFactorSerReSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+extern const FIXP_DBL aaFractDelayPhaseFactorSerImSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
+
+extern const FIXP_DBL p8_13_20[13];
+extern const FIXP_DBL p2_13_20[13];
+#endif
+
+extern const UCHAR aAllpassLinkDelaySer[3];
+extern const UCHAR delayIndexQmf[NO_QMF_CHANNELS];
+extern const UCHAR groupBorders20[NO_IID_GROUPS + 1];
+extern const UCHAR groupBorders34[NO_IID_GROUPS_HI_RES + 1];
+extern const UCHAR bins2groupMap20[NO_IID_GROUPS];
+extern const UCHAR quantizedIIDs[NO_IID_STEPS];
+extern const UCHAR quantizedIIDsFine[NO_IID_STEPS_FINE];
+extern const UCHAR FDK_sbrDecoder_aNoIidBins[3];
+extern const UCHAR FDK_sbrDecoder_aNoIccBins[3];
+
+
+/* Lookup tables for some arithmetic functions */
+
+#define INV_TABLE_BITS 8
+#define INV_TABLE_SIZE (1<<INV_TABLE_BITS)
+extern const FIXP_SGL FDK_sbrDecoder_invTable[INV_TABLE_SIZE];
+
+#endif // __rom_H