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Diffstat (limited to 'libAACdec/src/aac_rom.h')
| -rw-r--r-- | libAACdec/src/aac_rom.h | 213 |
1 files changed, 131 insertions, 82 deletions
diff --git a/libAACdec/src/aac_rom.h b/libAACdec/src/aac_rom.h index f314a2d..ffaf951 100644 --- a/libAACdec/src/aac_rom.h +++ b/libAACdec/src/aac_rom.h @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - All rights reserved. +© Copyright 1995 - 2018 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. +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: +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 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 +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. +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. +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." +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. +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. +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. +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 @@ -79,14 +90,15 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ -/***************************** MPEG-4 AAC Decoder ************************** +/**************************** AAC decoder library ****************************** Author(s): Josef Hoepfl + Description: Definition of constant tables -******************************************************************************/ +*******************************************************************************/ #ifndef AAC_ROM_H #define AAC_ROM_H @@ -96,13 +108,26 @@ amm-info@iis.fraunhofer.de #include "aacdec_hcr_types.h" #include "aacdec_hcrs.h" -#define AAC_NF_NO_RANDOM_VAL 512 /*!< Size of random number array for noise floor */ +#define PCM_DEC FIXP_DBL +#define MAXVAL_PCM_DEC MAXVAL_DBL +#define MINVAL_PCM_DEC MINVAL_DBL +#define FIXP_DBL2PCM_DEC(x) (x) +#define PCM_DEC2FIXP_DBL(x) (x) +#define PCM_DEC_BITS DFRACT_BITS +#define PCM_DEC2FX_PCM(x) FX_DBL2FX_PCM(x) +#define FX_PCM2PCM_DEC(x) FX_PCM2FX_DBL(x) + +#define AACDEC_MAX_CH_CONF 14 +#define AACDEC_CH_ELEMENTS_TAB_SIZE 7 /*!< Size of element tables */ + +#define AAC_NF_NO_RANDOM_VAL \ + 512 /*!< Size of random number array for noise floor */ #define INV_QUANT_TABLESIZE 256 -extern const FIXP_DBL InverseQuantTable [INV_QUANT_TABLESIZE + 1] ; -extern const FIXP_DBL MantissaTable [4][14] ; -extern const SCHAR ExponentTable [4][14] ; +extern const FIXP_DBL InverseQuantTable[INV_QUANT_TABLESIZE + 1]; +extern const FIXP_DBL MantissaTable[4][14]; +extern const SCHAR ExponentTable[4][14]; #define NUM_LD_COEF_512 1536 #define NUM_LD_COEF_480 1440 @@ -112,6 +137,11 @@ extern const SCHAR ExponentTable [4][14] ; #define WTS2 (-2) extern const FIXP_WTB LowDelaySynthesis512[1536]; extern const FIXP_WTB LowDelaySynthesis480[1440]; +extern const FIXP_WTB LowDelaySynthesis256[768]; +extern const FIXP_WTB LowDelaySynthesis240[720]; +extern const FIXP_WTB LowDelaySynthesis160[480]; +extern const FIXP_WTB LowDelaySynthesis128[384]; +extern const FIXP_WTB LowDelaySynthesis120[360]; typedef struct { const SHORT *sfbOffsetLong; @@ -123,13 +153,9 @@ typedef struct { extern const SFB_INFO sfbOffsetTables[5][16]; /* Huffman tables */ -enum { - HuffmanBits = 2, - HuffmanEntries = (1 << HuffmanBits) -}; +enum { HuffmanBits = 2, HuffmanEntries = (1 << HuffmanBits) }; -typedef struct -{ +typedef struct { const USHORT (*CodeBook)[HuffmanEntries]; UCHAR Dimension; UCHAR numBits; @@ -139,28 +165,26 @@ typedef struct extern const CodeBookDescription AACcodeBookDescriptionTable[13]; extern const CodeBookDescription AACcodeBookDescriptionSCL; +extern const STATEFUNC aStateConstant2State[]; -extern const STATEFUNC aStateConstant2State[]; - -extern const SCHAR aCodebook2StartInt[]; +extern const SCHAR aCodebook2StartInt[]; -extern const UCHAR aMinOfCbPair[]; -extern const UCHAR aMaxOfCbPair[]; +extern const UCHAR aMinOfCbPair[]; +extern const UCHAR aMaxOfCbPair[]; -extern const UCHAR aMaxCwLen[]; -extern const UCHAR aDimCb[]; -extern const UCHAR aDimCbShift[]; -extern const UCHAR aSignCb[]; -extern const UCHAR aCbPriority[]; +extern const UCHAR aMaxCwLen[]; +extern const UCHAR aDimCb[]; +extern const UCHAR aDimCbShift[]; +extern const UCHAR aSignCb[]; +extern const UCHAR aCbPriority[]; -extern const UINT *aHuffTable[]; -extern const SCHAR *aQuantTable[]; +extern const UINT *aHuffTable[]; +extern const SCHAR *aQuantTable[]; -extern const USHORT aLargestAbsoluteValue[]; - -extern const UINT aHuffTreeRvlcEscape[]; -extern const UINT aHuffTreeRvlCodewds[]; +extern const USHORT aLargestAbsoluteValue[]; +extern const UINT aHuffTreeRvlcEscape[]; +extern const UINT aHuffTreeRvlCodewds[]; extern const UCHAR tns_max_bands_tbl[13][2]; @@ -172,7 +196,10 @@ extern const UCHAR tns_max_bands_tbl_512[13]; extern const FIXP_TCC FDKaacDec_tnsCoeff3[8]; extern const FIXP_TCC FDKaacDec_tnsCoeff4[16]; -extern const USHORT randomSign[AAC_NF_NO_RANDOM_VAL/16]; +extern const UCHAR FDKaacDec_tnsCoeff3_gain_ld[]; +extern const UCHAR FDKaacDec_tnsCoeff4_gain_ld[]; + +extern const USHORT AacDec_randomSign[AAC_NF_NO_RANDOM_VAL / 16]; extern const FIXP_DBL pow2_div24minus1[47]; extern const int offsetTab[2][16]; @@ -183,6 +210,28 @@ extern const UCHAR channelMappingTablePassthrough[15][8]; extern const UCHAR channelMappingTableWAV[15][8]; /* Lookup tables for elements in ER bitstream */ -extern const MP4_ELEMENT_ID elementsTab[15][7]; +extern const MP4_ELEMENT_ID elementsTab[AACDEC_MAX_CH_CONF] + [AACDEC_CH_ELEMENTS_TAB_SIZE]; + +#define SF_FNA_COEFFS \ + 1 /* Compile-time prescaler for MDST-filter coefficients. */ +/* SF_FNA_COEFFS > 0 should only be considered for FIXP_DBL-coefficients */ +/* (i.e. if CPLX_PRED_FILTER_16BIT is not defined). */ +/* With FIXP_DBL loss of precision is possible for SF_FNA_COEFFS > 11. */ + +#ifdef CPLX_PRED_FILTER_16BIT +#define FIXP_FILT FIXP_SGL +#define FILT(a) ((FL2FXCONST_SGL(a)) >> SF_FNA_COEFFS) +#else +#define FIXP_FILT FIXP_DBL +#define FILT(a) ((FL2FXCONST_DBL(a)) >> SF_FNA_COEFFS) +#endif + +extern const FIXP_FILT mdst_filt_coef_curr[20][3]; /* MDST-filter coefficient + tables used for current + window */ +extern const FIXP_FILT mdst_filt_coef_prev[6][4]; /* MDST-filter coefficient + tables used for previous + window */ #endif /* #ifndef AAC_ROM_H */ |