sbr_rom.h - Android社区 - https://www.androidos.net.cn/

/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android

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

C++程序 | 236行 | 10.49 KB

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