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Diffstat (limited to 'libAACenc/src/pnsparam.cpp')
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diff --git a/libAACenc/src/pnsparam.cpp b/libAACenc/src/pnsparam.cpp deleted file mode 100644 index afc5bdd..0000000 --- a/libAACenc/src/pnsparam.cpp +++ /dev/null @@ -1,308 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -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. - - 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 ------------------------------------------------------------------------------------------------------------ */ - -/******************************** MPEG Audio Encoder ************************** - - Initial author: M.Lohwasser - contents/description: PNS parameters depending on bitrate and bandwidth - -******************************************************************************/ - -#include "pnsparam.h" -#include "psy_configuration.h" - -typedef struct { - SHORT startFreq; - /* Parameters for detection */ - FIXP_SGL refPower; - FIXP_SGL refTonality; - SHORT tnsGainThreshold; /* scaled by TNS_PREDGAIN_SCALE (=1000) */ - SHORT tnsPNSGainThreshold; /* scaled by TNS_PREDGAIN_SCALE (=1000) */ - FIXP_SGL gapFillThr; - SHORT minSfbWidth; - USHORT detectionAlgorithmFlags; -} PNS_INFO_TAB; - - -typedef struct { - ULONG brFrom; - ULONG brTo; - UCHAR S22050; - UCHAR S24000; - UCHAR S32000; - UCHAR S44100; - UCHAR S48000; -} AUTO_PNS_TAB; - -static const AUTO_PNS_TAB levelTable_mono[]= { - {0, 11999, 1, 1, 1, 1, 1,}, - {12000, 19999, 1, 1, 1, 1, 1,}, - {20000, 28999, 2, 1, 1, 1, 1,}, - {29000, 40999, 4, 4, 4, 2, 2,}, - {41000, 55999, 9, 9, 7, 7, 7,}, - {56000, 79999, 0, 0, 0, 9, 9,}, - {80000, 99999, 0, 0, 0, 0, 0,}, - {100000,999999, 0, 0, 0, 0, 0,}, -}; - -static const AUTO_PNS_TAB levelTable_stereo[]= { - {0, 11999, 1, 1, 1, 1, 1,}, - {12000, 19999, 3, 1, 1, 1, 1,}, - {20000, 28999, 3, 3, 3, 2, 2,}, - {29000, 40999, 7, 6, 6, 5, 5,}, - {41000, 55999, 9, 9, 7, 7, 7,}, - {56000, 79999, 0, 0, 0, 0, 0,}, - {80000, 99999, 0, 0, 0, 0, 0,}, - {100000,999999, 0, 0, 0, 0, 0,}, -}; - - -static const PNS_INFO_TAB pnsInfoTab[] = { -/*0 pns off */ -/*1*/ { 4000, FL2FXCONST_SGL(0.04), FL2FXCONST_SGL(0.06), 1150, 1200, FL2FXCONST_SGL(0.02), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS /*| JUST_LONG_WINDOW*/ }, -/*2*/ { 4000, FL2FXCONST_SGL(0.04), FL2FXCONST_SGL(0.07), 1130, 1300, FL2FXCONST_SGL(0.05), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS /*| JUST_LONG_WINDOW*/ }, -/*3*/ { 4100, FL2FXCONST_SGL(0.04), FL2FXCONST_SGL(0.07), 1100, 1400, FL2FXCONST_SGL(0.10), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS /*| JUST_LONG_WINDOW*/ }, -/*4*/ { 4100, FL2FXCONST_SGL(0.03), FL2FXCONST_SGL(0.10), 1100, 1400, FL2FXCONST_SGL(0.15), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS /*| JUST_LONG_WINDOW*/ }, -/*5*/ { 4300, FL2FXCONST_SGL(0.03), FL2FXCONST_SGL(0.10), 1100, 1400, FL2FXCONST_SGL(0.15), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -/*6*/ { 5000, FL2FXCONST_SGL(0.03), FL2FXCONST_SGL(0.10), 1100, 1400, FL2FXCONST_SGL(0.25), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -/*7*/ { 5500, FL2FXCONST_SGL(0.03), FL2FXCONST_SGL(0.12), 1100, 1400, FL2FXCONST_SGL(0.35), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -/*8*/ { 6000, FL2FXCONST_SGL(0.03), FL2FXCONST_SGL(0.12), 1080, 1400, FL2FXCONST_SGL(0.40), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -/*9*/ { 6000, FL2FXCONST_SGL(0.03), FL2FXCONST_SGL(0.14), 1070, 1400, FL2FXCONST_SGL(0.45), 8, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -}; - -static const AUTO_PNS_TAB levelTable_lowComplexity[]= { - {0, 27999, 0, 0, 0, 0, 0,}, - {28000, 31999, 2, 2, 2, 2, 2,}, - {32000, 47999, 3, 3, 3, 3, 3,}, - {48000, 48000, 4, 4, 4, 4, 4,}, - {48001, 999999, 0, 0, 0, 0, 0,}, -}; - -/* conversion of old LC tuning tables to new (LD enc) structure (only entries which are actually used were converted) */ -static const PNS_INFO_TAB pnsInfoTab_lowComplexity[] = { -/*0 pns off */ - /* DEFAULT parameter set */ -/*1*/ { 4100, FL2FXCONST_SGL(0.03), FL2FXCONST_SGL(0.16), 1100, 1400, FL2FXCONST_SGL(0.5), 16, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -/*2*/ { 4100, FL2FXCONST_SGL(0.05), FL2FXCONST_SGL(0.10), 1410, 1400, FL2FXCONST_SGL(0.5), 16, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -/*3*/ { 4100, FL2FXCONST_SGL(0.05), FL2FXCONST_SGL(0.10), 1100, 1400, FL2FXCONST_SGL(0.5), 16, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, - /* LOWSUBST -> PNS is used less often than with DEFAULT parameter set (for br: 48000 - 79999) */ -/*4*/ { 4100, FL2FXCONST_SGL(0.20), FL2FXCONST_SGL(0.10), 1410, 1400, FL2FXCONST_SGL(0.5), 16, - USE_POWER_DISTRIBUTION | USE_PSYCH_TONALITY | USE_TNS_GAIN_THR | USE_TNS_PNS | JUST_LONG_WINDOW }, -}; - -/**************************************************************************** - function to look up used pns level -****************************************************************************/ -int FDKaacEnc_lookUpPnsUse (int bitRate, int sampleRate, int numChan, const int isLC) { - - int hUsePns=0, size, i; - const AUTO_PNS_TAB *levelTable; - - if (isLC) { - levelTable = &levelTable_lowComplexity[0]; - size = sizeof(levelTable_lowComplexity); - } else - { /* (E)LD */ - levelTable = (numChan > 1) ? &levelTable_stereo[0] : &levelTable_mono[0]; - size = (numChan > 1) ? sizeof(levelTable_stereo) : sizeof(levelTable_mono); - } - - for(i = 0; i < (int) (size/sizeof(AUTO_PNS_TAB)); i++) { - if(((ULONG)bitRate >= levelTable[i].brFrom) && - ((ULONG)bitRate <= levelTable[i].brTo) ) - break; - } - - /* sanity check */ - if ((int)(sizeof(pnsInfoTab)/sizeof(PNS_INFO_TAB)) < i ) { - return (PNS_TABLE_ERROR); - } - - switch (sampleRate) { - case 22050: hUsePns = levelTable[i].S22050; break; - case 24000: hUsePns = levelTable[i].S24000; break; - case 32000: hUsePns = levelTable[i].S32000; break; - case 44100: hUsePns = levelTable[i].S44100; break; - case 48000: hUsePns = levelTable[i].S48000; break; - default: - if (isLC) { - hUsePns = levelTable[i].S48000; - } - break; - } - - return (hUsePns); -} - - -/***************************************************************************** - - functionname: FDKaacEnc_GetPnsParam - description: Gets PNS parameters depending on bitrate and bandwidth - returns: error status - input: Noiseparams struct, bitrate, sampling rate, - number of sfb's, pointer to sfb offset - output: PNS parameters - -*****************************************************************************/ -AAC_ENCODER_ERROR FDKaacEnc_GetPnsParam(NOISEPARAMS *np, - INT bitRate, - INT sampleRate, - INT sfbCnt, - const INT *sfbOffset, - INT *usePns, - INT numChan, - const int isLC) - -{ - int i, hUsePns; - const PNS_INFO_TAB *pnsInfo; - - if (isLC) { - np->detectionAlgorithmFlags = IS_LOW_COMLEXITY; - pnsInfo = pnsInfoTab_lowComplexity; - } - else - { - np->detectionAlgorithmFlags = 0; - pnsInfo = pnsInfoTab; - } - - if (*usePns<=0) - return AAC_ENC_OK; - - /* new pns params */ - hUsePns = FDKaacEnc_lookUpPnsUse (bitRate, sampleRate, numChan, isLC); - if (hUsePns == 0) { - *usePns = 0; - return AAC_ENC_OK; - } - if (hUsePns == PNS_TABLE_ERROR) - return AAC_ENC_PNS_TABLE_ERROR; - - /* select correct row of tuning table */ - pnsInfo += hUsePns-1; - - np->startSfb = FDKaacEnc_FreqToBandWithRounding( pnsInfo->startFreq, - sampleRate, - sfbCnt, - sfbOffset ); - - np->detectionAlgorithmFlags |= pnsInfo->detectionAlgorithmFlags; - - np->refPower = FX_SGL2FX_DBL(pnsInfo->refPower); - np->refTonality = FX_SGL2FX_DBL(pnsInfo->refTonality); - np->tnsGainThreshold = pnsInfo->tnsGainThreshold; - np->tnsPNSGainThreshold = pnsInfo->tnsPNSGainThreshold; - np->minSfbWidth = pnsInfo->minSfbWidth; - - np->gapFillThr = (FIXP_SGL)pnsInfo->gapFillThr; - - /* assuming a constant dB/Hz slope in the signal's PSD curve, - the detection threshold needs to be corrected for the width of the band */ - for ( i = 0; i < (sfbCnt-1); i++) - { - INT qtmp, sfbWidth; - FIXP_DBL tmp; - - sfbWidth = sfbOffset[i+1]-sfbOffset[i]; - - tmp = fPow(np->refPower, 0, sfbWidth, DFRACT_BITS-1-5, &qtmp); - np->powDistPSDcurve[i] = (FIXP_SGL)((LONG)(scaleValue(tmp, qtmp) >> 16)); - } - np->powDistPSDcurve[sfbCnt] = np->powDistPSDcurve[sfbCnt-1]; - - return AAC_ENC_OK; -} |