| |
| /* ----------------------------------------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2015 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]; |
| extern const UCHAR FDK_sbrDecoder_sbr_start_freq_64[16]; |
| extern const UCHAR FDK_sbrDecoder_sbr_start_freq_88[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_DBL FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4_DBL[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 |