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Diffstat (limited to 'libSBRenc/src/code_env.cpp')
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diff --git a/libSBRenc/src/code_env.cpp b/libSBRenc/src/code_env.cpp new file mode 100644 index 0000000..7c169e6 --- /dev/null +++ b/libSBRenc/src/code_env.cpp @@ -0,0 +1,641 @@ + +/* ----------------------------------------------------------------------------------------------------------- +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 +----------------------------------------------------------------------------------------------------------- */ + +#include "code_env.h" +#include "sbr_rom.h" + +/***************************************************************************** + + functionname: FDKsbrEnc_InitSbrHuffmanTables + description: initializes Huffman Tables dependent on chosen amp_res + returns: error handle + input: + 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. */ + + 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 */ + } + + /* these are common to both amp_res values */ + /*Noise data*/ + + /*Level/Pan - coding */ + 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->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; + + + /* init envelope tables and codebooks */ + henv->codeBookScfLavBalanceTime = sbrEnvData->codeBookScfLavBalance; + henv->codeBookScfLavBalanceFreq = sbrEnvData->codeBookScfLavBalance; + henv->codeBookScfLavLevelTime = sbrEnvData->codeBookScfLav; + henv->codeBookScfLavLevelFreq = sbrEnvData->codeBookScfLav; + henv->codeBookScfLavTime = sbrEnvData->codeBookScfLav; + henv->codeBookScfLavFreq = sbrEnvData->codeBookScfLav; + + henv->hufftableLevelTimeL = sbrEnvData->hufftableLevelTimeL; + henv->hufftableBalanceTimeL = sbrEnvData->hufftableBalanceTimeL; + henv->hufftableTimeL = sbrEnvData->hufftableTimeL; + henv->hufftableLevelFreqL = sbrEnvData->hufftableLevelFreqL; + henv->hufftableBalanceFreqL = sbrEnvData->hufftableBalanceFreqL; + henv->hufftableFreqL = sbrEnvData->hufftableFreqL; + + henv->codeBookScfLavFreq = sbrEnvData->codeBookScfLav; + henv->codeBookScfLavTime = sbrEnvData->codeBookScfLav; + + 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; + hnoise->codeBookScfLavBalanceFreq = CODE_BOOK_SCF_LAV_BALANCE11; + hnoise->codeBookScfLavLevelTime = CODE_BOOK_SCF_LAV11; + hnoise->codeBookScfLavLevelFreq = CODE_BOOK_SCF_LAV11; + hnoise->codeBookScfLavTime = CODE_BOOK_SCF_LAV11; + hnoise->codeBookScfLavFreq = CODE_BOOK_SCF_LAV11; + + hnoise->hufftableLevelTimeL = sbrEnvData->hufftableNoiseLevelTimeL; + hnoise->hufftableBalanceTimeL = sbrEnvData->hufftableNoiseBalanceTimeL; + hnoise->hufftableTimeL = sbrEnvData->hufftableNoiseTimeL; + hnoise->hufftableLevelFreqL = sbrEnvData->hufftableNoiseLevelFreqL; + 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 */ + henv->upDate = 0; + hnoise->upDate = 0; + return (0); +} + +/******************************************************************************* + Functionname: indexLow2High + ******************************************************************************* + + Description: Nice small patch-functions in order to cope with non-factor-2 + ratios between high-res and low-res + + Arguments: INT offset, INT index, FREQ_RES res + + 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); + } + } + else + return(index); +} + + + +/******************************************************************************* + Functionname: mapLowResEnergyVal + ******************************************************************************* + + Description: + + Arguments: INT currVal,INT* prevData, 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; + } + } + } + else + prevData[index] = currVal; +} + + + +/******************************************************************************* + Functionname: computeBits + ******************************************************************************* + + Description: + + Arguments: INT delta, + INT codeBookScfLavLevel, + INT codeBookScfLavBalance, + const UCHAR * hufftableLevel, + const UCHAR * hufftableBalance, INT coupling, INT channel) + + Return: INT + +*******************************************************************************/ +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); + } + + delta_bits = hufftableBalance[index + codeBookScfLavBalance]; + } + else { + if (*delta < 0) + index = fixMax(*delta, -codeBookScfLavLevel); + else + index = fixMin(*delta, codeBookScfLavLevel); + + if (index != *delta) { + *delta = index; + return (10000); + } + delta_bits = hufftableLevel[index + codeBookScfLavLevel]; + } + } + else { + if (*delta < 0) + index = fixMax(*delta, -codeBookScfLavLevel); + else + index = fixMin(*delta, codeBookScfLavLevel); + + if (index != *delta) { + *delta = index; + return (10000); + } + delta_bits = hufftableLevel[index + codeBookScfLavLevel]; + } + + return (delta_bits); +} + + + + +/******************************************************************************* + Functionname: FDKsbrEnc_codeEnvelope + ******************************************************************************* + + Description: + + Arguments: INT *sfb_nrg, + const FREQ_RES *freq_res, + SBR_CODE_ENVELOPE * h_sbrCodeEnvelope, + INT *directionVec, INT scalable, INT nEnvelopes, INT channel, + INT headerActive) + + Return: none + h_sbrCodeEnvelope->sfb_nrg_prev is modified ! + sfb_nrg is modified + h_sbrCodeEnvelope->update is modfied ! + *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) +{ + INT i, no_of_bands, band; + FIXP_DBL tmp1,tmp2,tmp3,dF_edge_1stEnv; + SCHAR *ptr_nrg; + + INT codeBookScfLavLevelTime; + INT codeBookScfLavLevelFreq; + INT codeBookScfLavBalanceTime; + INT codeBookScfLavBalanceFreq; + const UCHAR *hufftableLevelTimeL; + const UCHAR *hufftableBalanceTimeL; + const UCHAR *hufftableLevelFreqL; + const UCHAR *hufftableBalanceFreqL; + + INT offset = h_sbrCodeEnvelope->offset; + INT envDataTableCompFactor; + + INT delta_F_bits = 0, delta_T_bits = 0; + INT use_dT; + + SCHAR delta_F[MAX_FREQ_COEFFS]; + 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)); + + dF_edge_1stEnv = tmp1 + tmp2 + tmp3; + + if (coupling) { + codeBookScfLavLevelTime = h_sbrCodeEnvelope->codeBookScfLavLevelTime; + codeBookScfLavLevelFreq = h_sbrCodeEnvelope->codeBookScfLavLevelFreq; + codeBookScfLavBalanceTime = h_sbrCodeEnvelope->codeBookScfLavBalanceTime; + codeBookScfLavBalanceFreq = h_sbrCodeEnvelope->codeBookScfLavBalanceFreq; + hufftableLevelTimeL = h_sbrCodeEnvelope->hufftableLevelTimeL; + hufftableBalanceTimeL = h_sbrCodeEnvelope->hufftableBalanceTimeL; + hufftableLevelFreqL = h_sbrCodeEnvelope->hufftableLevelFreqL; + hufftableBalanceFreqL = h_sbrCodeEnvelope->hufftableBalanceFreqL; + } + else { + codeBookScfLavLevelTime = h_sbrCodeEnvelope->codeBookScfLavTime; + codeBookScfLavLevelFreq = h_sbrCodeEnvelope->codeBookScfLavFreq; + codeBookScfLavBalanceTime = h_sbrCodeEnvelope->codeBookScfLavTime; + codeBookScfLavBalanceFreq = h_sbrCodeEnvelope->codeBookScfLavFreq; + hufftableLevelTimeL = h_sbrCodeEnvelope->hufftableTimeL; + hufftableBalanceTimeL = h_sbrCodeEnvelope->hufftableTimeL; + hufftableLevelFreqL = h_sbrCodeEnvelope->hufftableFreqL; + hufftableBalanceFreqL = h_sbrCodeEnvelope->hufftableFreqL; + } + + 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; + + /* no delta coding in time in case of a header */ + if (headerActive) + h_sbrCodeEnvelope->upDate = 0; + + + 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; + + delta_F[0] = curr_nrg >> envDataTableCompFactor; + + if (coupling && channel == 1) + delta_F_bits = h_sbrCodeEnvelope->start_bits_balance; + 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; + + 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]); + + /* ensure that nrg difference is not higher than codeBookScfLavXXXFreq */ + 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; + } + } + 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; + } + } + } + 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; + } + } + 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; + } + } + } + + + /* Coding loop*/ + 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); + + 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]); + + 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; + use_dT = (h_sbrCodeEnvelope->upDate != 0 && (delta_F_bits > tmp_bits)); + } + else + use_dT = (delta_T_bits < delta_F_bits && h_sbrCodeEnvelope->upDate != 0); + + if (use_dT) + { + directionVec[i] = TIME; + 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)); + } + sfb_nrg += no_of_bands; + h_sbrCodeEnvelope->upDate = 1; + } + +} + + +/******************************************************************************* + Functionname: FDKsbrEnc_InitSbrCodeEnvelope + ******************************************************************************* + + Description: + + Arguments: + + 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)); + + h_sbrCodeEnvelope->deltaTAcrossFrames = deltaTAcrossFrames; + h_sbrCodeEnvelope->dF_edge_1stEnv = dF_edge_1stEnv; + h_sbrCodeEnvelope->dF_edge_incr = dF_edge_incr; + h_sbrCodeEnvelope->dF_edge_incr_fac = 0; + 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]; + + return (0); +} |