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Diffstat (limited to 'libSBRenc/src/code_env.cpp')
| -rw-r--r-- | libSBRenc/src/code_env.cpp | 573 |
1 files changed, 267 insertions, 306 deletions
diff --git a/libSBRenc/src/code_env.cpp b/libSBRenc/src/code_env.cpp index e1a28d5..fb0f6a4 100644 --- a/libSBRenc/src/code_env.cpp +++ b/libSBRenc/src/code_env.cpp @@ -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 @@ -79,10 +90,18 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ + +/**************************** SBR encoder library ****************************** + + Author(s): + + Description: + +*******************************************************************************/ #include "code_env.h" -#include "sbr_rom.h" +#include "sbrenc_rom.h" /***************************************************************************** @@ -93,100 +112,98 @@ amm-info@iis.fraunhofer.de output: *****************************************************************************/ -INT -FDKsbrEnc_InitSbrHuffmanTables (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_SBR_CODE_ENVELOPE henv, - HANDLE_SBR_CODE_ENVELOPE hnoise, - AMP_RES amp_res) -{ - if ( (!henv) || (!hnoise) || (!sbrEnvData) ) - return (1); /* not init. */ +INT FDKsbrEnc_InitSbrHuffmanTables(HANDLE_SBR_ENV_DATA sbrEnvData, + HANDLE_SBR_CODE_ENVELOPE henv, + HANDLE_SBR_CODE_ENVELOPE hnoise, + AMP_RES amp_res) { + if ((!henv) || (!hnoise) || (!sbrEnvData)) return (1); /* not init. */ sbrEnvData->init_sbr_amp_res = amp_res; switch (amp_res) { - case SBR_AMP_RES_3_0: - /*envelope data*/ - - /*Level/Pan - coding */ - sbrEnvData->hufftableLevelTimeC = v_Huff_envelopeLevelC11T; - sbrEnvData->hufftableLevelTimeL = v_Huff_envelopeLevelL11T; - sbrEnvData->hufftableBalanceTimeC = bookSbrEnvBalanceC11T; - sbrEnvData->hufftableBalanceTimeL = bookSbrEnvBalanceL11T; - - sbrEnvData->hufftableLevelFreqC = v_Huff_envelopeLevelC11F; - sbrEnvData->hufftableLevelFreqL = v_Huff_envelopeLevelL11F; - sbrEnvData->hufftableBalanceFreqC = bookSbrEnvBalanceC11F; - sbrEnvData->hufftableBalanceFreqL = bookSbrEnvBalanceL11F; - - /*Right/Left - coding */ - sbrEnvData->hufftableTimeC = v_Huff_envelopeLevelC11T; - sbrEnvData->hufftableTimeL = v_Huff_envelopeLevelL11T; - sbrEnvData->hufftableFreqC = v_Huff_envelopeLevelC11F; - sbrEnvData->hufftableFreqL = v_Huff_envelopeLevelL11F; - - sbrEnvData->codeBookScfLavBalance = CODE_BOOK_SCF_LAV_BALANCE11; - sbrEnvData->codeBookScfLav = CODE_BOOK_SCF_LAV11; - - sbrEnvData->si_sbr_start_env_bits = SI_SBR_START_ENV_BITS_AMP_RES_3_0; - sbrEnvData->si_sbr_start_env_bits_balance = SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_3_0; - break; - - case SBR_AMP_RES_1_5: - /*envelope data*/ - - /*Level/Pan - coding */ - sbrEnvData->hufftableLevelTimeC = v_Huff_envelopeLevelC10T; - sbrEnvData->hufftableLevelTimeL = v_Huff_envelopeLevelL10T; - sbrEnvData->hufftableBalanceTimeC = bookSbrEnvBalanceC10T; - sbrEnvData->hufftableBalanceTimeL = bookSbrEnvBalanceL10T; - - sbrEnvData->hufftableLevelFreqC = v_Huff_envelopeLevelC10F; - sbrEnvData->hufftableLevelFreqL = v_Huff_envelopeLevelL10F; - sbrEnvData->hufftableBalanceFreqC = bookSbrEnvBalanceC10F; - sbrEnvData->hufftableBalanceFreqL = bookSbrEnvBalanceL10F; - - /*Right/Left - coding */ - sbrEnvData->hufftableTimeC = v_Huff_envelopeLevelC10T; - sbrEnvData->hufftableTimeL = v_Huff_envelopeLevelL10T; - sbrEnvData->hufftableFreqC = v_Huff_envelopeLevelC10F; - sbrEnvData->hufftableFreqL = v_Huff_envelopeLevelL10F; - - sbrEnvData->codeBookScfLavBalance = CODE_BOOK_SCF_LAV_BALANCE10; - sbrEnvData->codeBookScfLav = CODE_BOOK_SCF_LAV10; - - sbrEnvData->si_sbr_start_env_bits = SI_SBR_START_ENV_BITS_AMP_RES_1_5; - sbrEnvData->si_sbr_start_env_bits_balance = SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_1_5; - break; - - default: - return (1); /* undefined amp_res mode */ + case SBR_AMP_RES_3_0: + /*envelope data*/ + + /*Level/Pan - coding */ + sbrEnvData->hufftableLevelTimeC = v_Huff_envelopeLevelC11T; + sbrEnvData->hufftableLevelTimeL = v_Huff_envelopeLevelL11T; + sbrEnvData->hufftableBalanceTimeC = bookSbrEnvBalanceC11T; + sbrEnvData->hufftableBalanceTimeL = bookSbrEnvBalanceL11T; + + sbrEnvData->hufftableLevelFreqC = v_Huff_envelopeLevelC11F; + sbrEnvData->hufftableLevelFreqL = v_Huff_envelopeLevelL11F; + sbrEnvData->hufftableBalanceFreqC = bookSbrEnvBalanceC11F; + sbrEnvData->hufftableBalanceFreqL = bookSbrEnvBalanceL11F; + + /*Right/Left - coding */ + sbrEnvData->hufftableTimeC = v_Huff_envelopeLevelC11T; + sbrEnvData->hufftableTimeL = v_Huff_envelopeLevelL11T; + sbrEnvData->hufftableFreqC = v_Huff_envelopeLevelC11F; + sbrEnvData->hufftableFreqL = v_Huff_envelopeLevelL11F; + + sbrEnvData->codeBookScfLavBalance = CODE_BOOK_SCF_LAV_BALANCE11; + sbrEnvData->codeBookScfLav = CODE_BOOK_SCF_LAV11; + + sbrEnvData->si_sbr_start_env_bits = SI_SBR_START_ENV_BITS_AMP_RES_3_0; + sbrEnvData->si_sbr_start_env_bits_balance = + SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_3_0; + break; + + case SBR_AMP_RES_1_5: + /*envelope data*/ + + /*Level/Pan - coding */ + sbrEnvData->hufftableLevelTimeC = v_Huff_envelopeLevelC10T; + sbrEnvData->hufftableLevelTimeL = v_Huff_envelopeLevelL10T; + sbrEnvData->hufftableBalanceTimeC = bookSbrEnvBalanceC10T; + sbrEnvData->hufftableBalanceTimeL = bookSbrEnvBalanceL10T; + + sbrEnvData->hufftableLevelFreqC = v_Huff_envelopeLevelC10F; + sbrEnvData->hufftableLevelFreqL = v_Huff_envelopeLevelL10F; + sbrEnvData->hufftableBalanceFreqC = bookSbrEnvBalanceC10F; + sbrEnvData->hufftableBalanceFreqL = bookSbrEnvBalanceL10F; + + /*Right/Left - coding */ + sbrEnvData->hufftableTimeC = v_Huff_envelopeLevelC10T; + sbrEnvData->hufftableTimeL = v_Huff_envelopeLevelL10T; + sbrEnvData->hufftableFreqC = v_Huff_envelopeLevelC10F; + sbrEnvData->hufftableFreqL = v_Huff_envelopeLevelL10F; + + sbrEnvData->codeBookScfLavBalance = CODE_BOOK_SCF_LAV_BALANCE10; + sbrEnvData->codeBookScfLav = CODE_BOOK_SCF_LAV10; + + sbrEnvData->si_sbr_start_env_bits = SI_SBR_START_ENV_BITS_AMP_RES_1_5; + sbrEnvData->si_sbr_start_env_bits_balance = + SI_SBR_START_ENV_BITS_BALANCE_AMP_RES_1_5; + break; + + default: + return (1); /* undefined amp_res mode */ } /* these are common to both amp_res values */ /*Noise data*/ /*Level/Pan - coding */ - sbrEnvData->hufftableNoiseLevelTimeC = v_Huff_NoiseLevelC11T; - sbrEnvData->hufftableNoiseLevelTimeL = v_Huff_NoiseLevelL11T; + sbrEnvData->hufftableNoiseLevelTimeC = v_Huff_NoiseLevelC11T; + sbrEnvData->hufftableNoiseLevelTimeL = v_Huff_NoiseLevelL11T; sbrEnvData->hufftableNoiseBalanceTimeC = bookSbrNoiseBalanceC11T; sbrEnvData->hufftableNoiseBalanceTimeL = bookSbrNoiseBalanceL11T; - sbrEnvData->hufftableNoiseLevelFreqC = v_Huff_envelopeLevelC11F; - sbrEnvData->hufftableNoiseLevelFreqL = v_Huff_envelopeLevelL11F; + sbrEnvData->hufftableNoiseLevelFreqC = v_Huff_envelopeLevelC11F; + sbrEnvData->hufftableNoiseLevelFreqL = v_Huff_envelopeLevelL11F; sbrEnvData->hufftableNoiseBalanceFreqC = bookSbrEnvBalanceC11F; sbrEnvData->hufftableNoiseBalanceFreqL = bookSbrEnvBalanceL11F; - /*Right/Left - coding */ - sbrEnvData->hufftableNoiseTimeC = v_Huff_NoiseLevelC11T; - sbrEnvData->hufftableNoiseTimeL = v_Huff_NoiseLevelL11T; - sbrEnvData->hufftableNoiseFreqC = v_Huff_envelopeLevelC11F; - sbrEnvData->hufftableNoiseFreqL = v_Huff_envelopeLevelL11F; - - sbrEnvData->si_sbr_start_noise_bits = SI_SBR_START_NOISE_BITS_AMP_RES_3_0; - sbrEnvData->si_sbr_start_noise_bits_balance = SI_SBR_START_NOISE_BITS_BALANCE_AMP_RES_3_0; + sbrEnvData->hufftableNoiseTimeC = v_Huff_NoiseLevelC11T; + sbrEnvData->hufftableNoiseTimeL = v_Huff_NoiseLevelL11T; + sbrEnvData->hufftableNoiseFreqC = v_Huff_envelopeLevelC11F; + sbrEnvData->hufftableNoiseFreqL = v_Huff_envelopeLevelL11F; + sbrEnvData->si_sbr_start_noise_bits = SI_SBR_START_NOISE_BITS_AMP_RES_3_0; + sbrEnvData->si_sbr_start_noise_bits_balance = + SI_SBR_START_NOISE_BITS_BALANCE_AMP_RES_3_0; /* init envelope tables and codebooks */ henv->codeBookScfLavBalanceTime = sbrEnvData->codeBookScfLavBalance; @@ -209,7 +226,6 @@ FDKsbrEnc_InitSbrHuffmanTables (HANDLE_SBR_ENV_DATA sbrEnvData, henv->start_bits = sbrEnvData->si_sbr_start_env_bits; henv->start_bits_balance = sbrEnvData->si_sbr_start_env_bits_balance; - /* init noise tables and codebooks */ hnoise->codeBookScfLavBalanceTime = CODE_BOOK_SCF_LAV_BALANCE11; @@ -226,14 +242,14 @@ FDKsbrEnc_InitSbrHuffmanTables (HANDLE_SBR_ENV_DATA sbrEnvData, hnoise->hufftableBalanceFreqL = sbrEnvData->hufftableNoiseBalanceFreqL; hnoise->hufftableFreqL = sbrEnvData->hufftableNoiseFreqL; - hnoise->start_bits = sbrEnvData->si_sbr_start_noise_bits; hnoise->start_bits_balance = sbrEnvData->si_sbr_start_noise_bits_balance; - /* No delta coding in time from the previous frame due to 1.5dB FIx-FIX rule */ + /* No delta coding in time from the previous frame due to 1.5dB FIx-FIX rule + */ henv->upDate = 0; hnoise->upDate = 0; - return (0); + return (0); } /******************************************************************************* @@ -248,33 +264,24 @@ FDKsbrEnc_InitSbrHuffmanTables (HANDLE_SBR_ENV_DATA sbrEnvData, Return: INT *******************************************************************************/ -static INT indexLow2High(INT offset, INT index, FREQ_RES res) -{ - - if(res == FREQ_RES_LOW) - { - if (offset >= 0) - { - if (index < offset) - return(index); - else - return(2*index - offset); - } - else - { - offset = -offset; - if (index < offset) - return(2*index+index); - else - return(2*index + offset); +static INT indexLow2High(INT offset, INT index, FREQ_RES res) { + if (res == FREQ_RES_LOW) { + if (offset >= 0) { + if (index < offset) + return (index); + else + return (2 * index - offset); + } else { + offset = -offset; + if (index < offset) + return (2 * index + index); + else + return (2 * index + offset); } - } - else - return(index); + } else + return (index); } - - /******************************************************************************* Functionname: mapLowResEnergyVal ******************************************************************************* @@ -286,43 +293,31 @@ static INT indexLow2High(INT offset, INT index, FREQ_RES res) Return: none *******************************************************************************/ -static void mapLowResEnergyVal(SCHAR currVal, SCHAR* prevData, INT offset, INT index, FREQ_RES res) -{ - - if(res == FREQ_RES_LOW) - { - if (offset >= 0) - { - if(index < offset) - prevData[index] = currVal; - else - { - prevData[2*index - offset] = currVal; - prevData[2*index+1 - offset] = currVal; - } - } - else - { - offset = -offset; - if (index < offset) - { - prevData[3*index] = currVal; - prevData[3*index+1] = currVal; - prevData[3*index+2] = currVal; - } - else - { - prevData[2*index + offset] = currVal; - prevData[2*index + 1 + offset] = currVal; - } +static void mapLowResEnergyVal(SCHAR currVal, SCHAR *prevData, INT offset, + INT index, FREQ_RES res) { + if (res == FREQ_RES_LOW) { + if (offset >= 0) { + if (index < offset) + prevData[index] = currVal; + else { + prevData[2 * index - offset] = currVal; + prevData[2 * index + 1 - offset] = currVal; + } + } else { + offset = -offset; + if (index < offset) { + prevData[3 * index] = currVal; + prevData[3 * index + 1] = currVal; + prevData[3 * index + 2] = currVal; + } else { + prevData[2 * index + offset] = currVal; + prevData[2 * index + 1 + offset] = currVal; + } } - } - else + } else prevData[index] = currVal; } - - /******************************************************************************* Functionname: computeBits ******************************************************************************* @@ -338,36 +333,31 @@ static void mapLowResEnergyVal(SCHAR currVal, SCHAR* prevData, INT offset, INT i Return: INT *******************************************************************************/ -static INT -computeBits (SCHAR *delta, - INT codeBookScfLavLevel, - INT codeBookScfLavBalance, - const UCHAR * hufftableLevel, - const UCHAR * hufftableBalance, INT coupling, INT channel) -{ +static INT computeBits(SCHAR *delta, INT codeBookScfLavLevel, + INT codeBookScfLavBalance, const UCHAR *hufftableLevel, + const UCHAR *hufftableBalance, INT coupling, + INT channel) { INT index; INT delta_bits = 0; if (coupling) { - if (channel == 1) - { - if (*delta < 0) - index = fixMax(*delta, -codeBookScfLavBalance); - else - index = fixMin(*delta, codeBookScfLavBalance); - - if (index != *delta) { - *delta = index; - return (10000); - } + if (channel == 1) { + if (*delta < 0) + index = fixMax(*delta, -codeBookScfLavBalance); + else + index = fixMin(*delta, codeBookScfLavBalance); - delta_bits = hufftableBalance[index + codeBookScfLavBalance]; + if (index != *delta) { + *delta = index; + return (10000); } - else { + + delta_bits = hufftableBalance[index + codeBookScfLavBalance]; + } else { if (*delta < 0) index = fixMax(*delta, -codeBookScfLavLevel); else - index = fixMin(*delta, codeBookScfLavLevel); + index = fixMin(*delta, codeBookScfLavLevel); if (index != *delta) { *delta = index; @@ -375,12 +365,11 @@ computeBits (SCHAR *delta, } delta_bits = hufftableLevel[index + codeBookScfLavLevel]; } - } - else { + } else { if (*delta < 0) index = fixMax(*delta, -codeBookScfLavLevel); else - index = fixMin(*delta, codeBookScfLavLevel); + index = fixMin(*delta, codeBookScfLavLevel); if (index != *delta) { *delta = index; @@ -392,9 +381,6 @@ computeBits (SCHAR *delta, return (delta_bits); } - - - /******************************************************************************* Functionname: FDKsbrEnc_codeEnvelope ******************************************************************************* @@ -414,18 +400,12 @@ computeBits (SCHAR *delta, *directionVec is modified *******************************************************************************/ -void -FDKsbrEnc_codeEnvelope(SCHAR *sfb_nrg, - const FREQ_RES *freq_res, - SBR_CODE_ENVELOPE *h_sbrCodeEnvelope, - INT *directionVec, - INT coupling, - INT nEnvelopes, - INT channel, - INT headerActive) -{ +void FDKsbrEnc_codeEnvelope(SCHAR *sfb_nrg, const FREQ_RES *freq_res, + SBR_CODE_ENVELOPE *h_sbrCodeEnvelope, + INT *directionVec, INT coupling, INT nEnvelopes, + INT channel, INT headerActive) { INT i, no_of_bands, band; - FIXP_DBL tmp1,tmp2,tmp3,dF_edge_1stEnv; + FIXP_DBL tmp1, tmp2, tmp3, dF_edge_1stEnv; SCHAR *ptr_nrg; INT codeBookScfLavLevelTime; @@ -447,9 +427,10 @@ FDKsbrEnc_codeEnvelope(SCHAR *sfb_nrg, SCHAR delta_T[MAX_FREQ_COEFFS]; SCHAR last_nrg, curr_nrg; - tmp1 = FL2FXCONST_DBL(0.5f) >> (DFRACT_BITS-16-1); - tmp2 = h_sbrCodeEnvelope->dF_edge_1stEnv >> (DFRACT_BITS-16); - tmp3 = (FIXP_DBL)(((INT)(LONG)h_sbrCodeEnvelope->dF_edge_incr*h_sbrCodeEnvelope->dF_edge_incr_fac) >> (DFRACT_BITS-16)); + tmp1 = FL2FXCONST_DBL(0.5f) >> (DFRACT_BITS - 16 - 1); + tmp2 = h_sbrCodeEnvelope->dF_edge_1stEnv >> (DFRACT_BITS - 16); + tmp3 = (FIXP_DBL)fMult(h_sbrCodeEnvelope->dF_edge_incr, + ((FIXP_DBL)h_sbrCodeEnvelope->dF_edge_incr_fac) << 15); dF_edge_1stEnv = tmp1 + tmp2 + tmp3; @@ -462,8 +443,7 @@ FDKsbrEnc_codeEnvelope(SCHAR *sfb_nrg, hufftableBalanceTimeL = h_sbrCodeEnvelope->hufftableBalanceTimeL; hufftableLevelFreqL = h_sbrCodeEnvelope->hufftableLevelFreqL; hufftableBalanceFreqL = h_sbrCodeEnvelope->hufftableBalanceFreqL; - } - else { + } else { codeBookScfLavLevelTime = h_sbrCodeEnvelope->codeBookScfLavTime; codeBookScfLavLevelFreq = h_sbrCodeEnvelope->codeBookScfLavFreq; codeBookScfLavBalanceTime = h_sbrCodeEnvelope->codeBookScfLavTime; @@ -474,28 +454,23 @@ FDKsbrEnc_codeEnvelope(SCHAR *sfb_nrg, hufftableBalanceFreqL = h_sbrCodeEnvelope->hufftableFreqL; } - if(coupling == 1 && channel == 1) - envDataTableCompFactor = 1; /*should be one when the new huffman-tables are ready*/ + if (coupling == 1 && channel == 1) + envDataTableCompFactor = + 1; /*should be one when the new huffman-tables are ready*/ else envDataTableCompFactor = 0; - - if (h_sbrCodeEnvelope->deltaTAcrossFrames == 0) - h_sbrCodeEnvelope->upDate = 0; + if (h_sbrCodeEnvelope->deltaTAcrossFrames == 0) h_sbrCodeEnvelope->upDate = 0; /* no delta coding in time in case of a header */ - if (headerActive) - h_sbrCodeEnvelope->upDate = 0; - + if (headerActive) h_sbrCodeEnvelope->upDate = 0; - for (i = 0; i < nEnvelopes; i++) - { + for (i = 0; i < nEnvelopes; i++) { if (freq_res[i] == FREQ_RES_HIGH) no_of_bands = h_sbrCodeEnvelope->nSfb[FREQ_RES_HIGH]; else no_of_bands = h_sbrCodeEnvelope->nSfb[FREQ_RES_LOW]; - ptr_nrg = sfb_nrg; curr_nrg = *ptr_nrg; @@ -506,107 +481,96 @@ FDKsbrEnc_codeEnvelope(SCHAR *sfb_nrg, else delta_F_bits = h_sbrCodeEnvelope->start_bits; + if (h_sbrCodeEnvelope->upDate != 0) { + delta_T[0] = (curr_nrg - h_sbrCodeEnvelope->sfb_nrg_prev[0]) >> + envDataTableCompFactor; - if(h_sbrCodeEnvelope->upDate != 0) - { - delta_T[0] = (curr_nrg - h_sbrCodeEnvelope->sfb_nrg_prev[0]) >> envDataTableCompFactor; - - delta_T_bits = computeBits (&delta_T[0], - codeBookScfLavLevelTime, - codeBookScfLavBalanceTime, - hufftableLevelTimeL, - hufftableBalanceTimeL, coupling, channel); + delta_T_bits = computeBits(&delta_T[0], codeBookScfLavLevelTime, + codeBookScfLavBalanceTime, hufftableLevelTimeL, + hufftableBalanceTimeL, coupling, channel); } - - mapLowResEnergyVal(curr_nrg, h_sbrCodeEnvelope->sfb_nrg_prev, offset, 0, freq_res[i]); + mapLowResEnergyVal(curr_nrg, h_sbrCodeEnvelope->sfb_nrg_prev, offset, 0, + freq_res[i]); /* ensure that nrg difference is not higher than codeBookScfLavXXXFreq */ - if ( coupling && channel == 1 ) { + if (coupling && channel == 1) { for (band = no_of_bands - 1; band > 0; band--) { - if ( ptr_nrg[band] - ptr_nrg[band-1] > codeBookScfLavBalanceFreq ) { - ptr_nrg[band-1] = ptr_nrg[band] - codeBookScfLavBalanceFreq; + if (ptr_nrg[band] - ptr_nrg[band - 1] > codeBookScfLavBalanceFreq) { + ptr_nrg[band - 1] = ptr_nrg[band] - codeBookScfLavBalanceFreq; } } for (band = 1; band < no_of_bands; band++) { - if ( ptr_nrg[band-1] - ptr_nrg[band] > codeBookScfLavBalanceFreq ) { - ptr_nrg[band] = ptr_nrg[band-1] - codeBookScfLavBalanceFreq; + if (ptr_nrg[band - 1] - ptr_nrg[band] > codeBookScfLavBalanceFreq) { + ptr_nrg[band] = ptr_nrg[band - 1] - codeBookScfLavBalanceFreq; } } - } - else { + } else { for (band = no_of_bands - 1; band > 0; band--) { - if ( ptr_nrg[band] - ptr_nrg[band-1] > codeBookScfLavLevelFreq ) { - ptr_nrg[band-1] = ptr_nrg[band] - codeBookScfLavLevelFreq; + if (ptr_nrg[band] - ptr_nrg[band - 1] > codeBookScfLavLevelFreq) { + ptr_nrg[band - 1] = ptr_nrg[band] - codeBookScfLavLevelFreq; } } for (band = 1; band < no_of_bands; band++) { - if ( ptr_nrg[band-1] - ptr_nrg[band] > codeBookScfLavLevelFreq ) { - ptr_nrg[band] = ptr_nrg[band-1] - codeBookScfLavLevelFreq; + if (ptr_nrg[band - 1] - ptr_nrg[band] > codeBookScfLavLevelFreq) { + ptr_nrg[band] = ptr_nrg[band - 1] - codeBookScfLavLevelFreq; } } } - /* Coding loop*/ - for (band = 1; band < no_of_bands; band++) - { + for (band = 1; band < no_of_bands; band++) { last_nrg = (*ptr_nrg); ptr_nrg++; curr_nrg = (*ptr_nrg); delta_F[band] = (curr_nrg - last_nrg) >> envDataTableCompFactor; - delta_F_bits += computeBits (&delta_F[band], - codeBookScfLavLevelFreq, - codeBookScfLavBalanceFreq, - hufftableLevelFreqL, - hufftableBalanceFreqL, coupling, channel); + delta_F_bits += computeBits( + &delta_F[band], codeBookScfLavLevelFreq, codeBookScfLavBalanceFreq, + hufftableLevelFreqL, hufftableBalanceFreqL, coupling, channel); - if(h_sbrCodeEnvelope->upDate != 0) - { - delta_T[band] = curr_nrg - h_sbrCodeEnvelope->sfb_nrg_prev[indexLow2High(offset, band, freq_res[i])]; + if (h_sbrCodeEnvelope->upDate != 0) { + delta_T[band] = + curr_nrg - + h_sbrCodeEnvelope + ->sfb_nrg_prev[indexLow2High(offset, band, freq_res[i])]; delta_T[band] = delta_T[band] >> envDataTableCompFactor; } - mapLowResEnergyVal(curr_nrg, h_sbrCodeEnvelope->sfb_nrg_prev, offset, band, freq_res[i]); + mapLowResEnergyVal(curr_nrg, h_sbrCodeEnvelope->sfb_nrg_prev, offset, + band, freq_res[i]); - if(h_sbrCodeEnvelope->upDate != 0) - { - delta_T_bits += computeBits (&delta_T[band], - codeBookScfLavLevelTime, - codeBookScfLavBalanceTime, - hufftableLevelTimeL, - hufftableBalanceTimeL, coupling, channel); + if (h_sbrCodeEnvelope->upDate != 0) { + delta_T_bits += computeBits( + &delta_T[band], codeBookScfLavLevelTime, codeBookScfLavBalanceTime, + hufftableLevelTimeL, hufftableBalanceTimeL, coupling, channel); } } /* Replace sfb_nrg with deltacoded samples and set flag */ if (i == 0) { INT tmp_bits; - tmp_bits = (((delta_T_bits * dF_edge_1stEnv) >> (DFRACT_BITS-18)) + (FIXP_DBL)1) >> 1; + tmp_bits = (((delta_T_bits * dF_edge_1stEnv) >> (DFRACT_BITS - 18)) + + (FIXP_DBL)1) >> + 1; use_dT = (h_sbrCodeEnvelope->upDate != 0 && (delta_F_bits > tmp_bits)); - } - else + } else use_dT = (delta_T_bits < delta_F_bits && h_sbrCodeEnvelope->upDate != 0); - if (use_dT) - { + if (use_dT) { directionVec[i] = TIME; - FDKmemcpy (sfb_nrg, delta_T, no_of_bands * sizeof (SCHAR)); - } - else { + FDKmemcpy(sfb_nrg, delta_T, no_of_bands * sizeof(SCHAR)); + } else { h_sbrCodeEnvelope->upDate = 0; directionVec[i] = FREQ; - FDKmemcpy (sfb_nrg, delta_F, no_of_bands * sizeof (SCHAR)); + FDKmemcpy(sfb_nrg, delta_F, no_of_bands * sizeof(SCHAR)); } sfb_nrg += no_of_bands; h_sbrCodeEnvelope->upDate = 1; } - } - /******************************************************************************* Functionname: FDKsbrEnc_InitSbrCodeEnvelope ******************************************************************************* @@ -618,15 +582,11 @@ FDKsbrEnc_codeEnvelope(SCHAR *sfb_nrg, Return: *******************************************************************************/ -INT -FDKsbrEnc_InitSbrCodeEnvelope (HANDLE_SBR_CODE_ENVELOPE h_sbrCodeEnvelope, - INT *nSfb, - INT deltaTAcrossFrames, - FIXP_DBL dF_edge_1stEnv, - FIXP_DBL dF_edge_incr) -{ - - FDKmemclear(h_sbrCodeEnvelope,sizeof(SBR_CODE_ENVELOPE)); +INT FDKsbrEnc_InitSbrCodeEnvelope(HANDLE_SBR_CODE_ENVELOPE h_sbrCodeEnvelope, + INT *nSfb, INT deltaTAcrossFrames, + FIXP_DBL dF_edge_1stEnv, + FIXP_DBL dF_edge_incr) { + FDKmemclear(h_sbrCodeEnvelope, sizeof(SBR_CODE_ENVELOPE)); h_sbrCodeEnvelope->deltaTAcrossFrames = deltaTAcrossFrames; h_sbrCodeEnvelope->dF_edge_1stEnv = dF_edge_1stEnv; @@ -635,7 +595,8 @@ FDKsbrEnc_InitSbrCodeEnvelope (HANDLE_SBR_CODE_ENVELOPE h_sbrCodeEnvelope, h_sbrCodeEnvelope->upDate = 0; h_sbrCodeEnvelope->nSfb[FREQ_RES_LOW] = nSfb[FREQ_RES_LOW]; h_sbrCodeEnvelope->nSfb[FREQ_RES_HIGH] = nSfb[FREQ_RES_HIGH]; - h_sbrCodeEnvelope->offset = 2*h_sbrCodeEnvelope->nSfb[FREQ_RES_LOW] - h_sbrCodeEnvelope->nSfb[FREQ_RES_HIGH]; + h_sbrCodeEnvelope->offset = 2 * h_sbrCodeEnvelope->nSfb[FREQ_RES_LOW] - + h_sbrCodeEnvelope->nSfb[FREQ_RES_HIGH]; return (0); } |