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-
-/* -----------------------------------------------------------------------------------------------------------
-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.Werner
- contents/description: Psychoaccoustic major function block
-
-******************************************************************************/
-
-#include "psy_const.h"
-
-#include "block_switch.h"
-#include "transform.h"
-#include "spreading.h"
-#include "pre_echo_control.h"
-#include "band_nrg.h"
-#include "psy_configuration.h"
-#include "psy_data.h"
-#include "ms_stereo.h"
-#include "interface.h"
-#include "psy_main.h"
-#include "grp_data.h"
-#include "tns_func.h"
-#include "pns_func.h"
-#include "tonality.h"
-#include "aacEnc_ram.h"
-#include "intensity.h"
-
-
-
-/* blending to reduce gibbs artifacts */
-#define FADE_OUT_LEN 6
-static const FIXP_DBL fadeOutFactor[FADE_OUT_LEN] = {1840644096, 1533870080, 1227096064, 920322048, 613548032, 306774016};
-
-/* forward definitions */
-
-
-/*****************************************************************************
-
- functionname: FDKaacEnc_PsyNew
- description: allocates memory for psychoacoustic
- returns: an error code
- input: pointer to a psych handle
-
-*****************************************************************************/
-AAC_ENCODER_ERROR FDKaacEnc_PsyNew(PSY_INTERNAL **phpsy,
- const INT nElements,
- const INT nChannels
- ,UCHAR *dynamic_RAM
- )
-{
- AAC_ENCODER_ERROR ErrorStatus;
- PSY_INTERNAL *hPsy;
- INT i;
-
- hPsy = GetRam_aacEnc_PsyInternal();
- *phpsy = hPsy;
- if (hPsy == NULL) {
- ErrorStatus = AAC_ENC_NO_MEMORY;
- goto bail;
- }
-
- for (i=0; i<nElements; i++) {
- /* PSY_ELEMENT */
- hPsy->psyElement[i] = GetRam_aacEnc_PsyElement(i);
- if (hPsy->psyElement[i] == NULL) {
- ErrorStatus = AAC_ENC_NO_MEMORY;
- goto bail;
- }
- }
-
- for (i=0; i<nChannels; i++) {
- /* PSY_STATIC */
- hPsy->pStaticChannels[i] = GetRam_aacEnc_PsyStatic(i);
- if (hPsy->pStaticChannels[i]==NULL) {
- ErrorStatus = AAC_ENC_NO_MEMORY;
- goto bail;
- }
- /* AUDIO INPUT BUFFER */
- hPsy->pStaticChannels[i]->psyInputBuffer = GetRam_aacEnc_PsyInputBuffer(i);
- if (hPsy->pStaticChannels[i]->psyInputBuffer==NULL) {
- ErrorStatus = AAC_ENC_NO_MEMORY;
- goto bail;
- }
- }
-
- /* reusable psych memory */
- hPsy->psyDynamic = GetRam_aacEnc_PsyDynamic(0, dynamic_RAM);
-
- return AAC_ENC_OK;
-
-bail:
- FDKaacEnc_PsyClose(phpsy, NULL);
-
- return ErrorStatus;
-}
-
-/*****************************************************************************
-
- functionname: FDKaacEnc_PsyOutNew
- description: allocates memory for psyOut struc
- returns: an error code
- input: pointer to a psych handle
-
-*****************************************************************************/
-AAC_ENCODER_ERROR FDKaacEnc_PsyOutNew(PSY_OUT **phpsyOut,
- const INT nElements,
- const INT nChannels,
- const INT nSubFrames
- ,UCHAR *dynamic_RAM
- )
-{
- AAC_ENCODER_ERROR ErrorStatus;
- int n, i;
- int elInc = 0, chInc = 0;
-
- for (n=0; n<nSubFrames; n++) {
- phpsyOut[n] = GetRam_aacEnc_PsyOut(n);
-
- if (phpsyOut[n] == NULL) {
- ErrorStatus = AAC_ENC_NO_MEMORY;
- goto bail;
- }
-
- for (i=0; i<nChannels; i++) {
- phpsyOut[n]->pPsyOutChannels[i] = GetRam_aacEnc_PsyOutChannel(chInc++);
- }
-
- for (i=0; i<nElements; i++) {
- phpsyOut[n]->psyOutElement[i] = GetRam_aacEnc_PsyOutElements(elInc++);
- if (phpsyOut[n]->psyOutElement[i] == NULL) {
- ErrorStatus = AAC_ENC_NO_MEMORY;
- goto bail;
- }
- }
- } /* nSubFrames */
-
- return AAC_ENC_OK;
-
-bail:
- FDKaacEnc_PsyClose(NULL, phpsyOut);
- return ErrorStatus;
-}
-
-
-AAC_ENCODER_ERROR FDKaacEnc_psyInitStates(PSY_INTERNAL *hPsy,
- PSY_STATIC* psyStatic,
- AUDIO_OBJECT_TYPE audioObjectType)
-{
- /* init input buffer */
- FDKmemclear(psyStatic->psyInputBuffer, MAX_INPUT_BUFFER_SIZE*sizeof(INT_PCM));
-
- FDKaacEnc_InitBlockSwitching(&psyStatic->blockSwitchingControl,
- isLowDelay(audioObjectType)
- );
-
- return AAC_ENC_OK;
-}
-
-
-AAC_ENCODER_ERROR FDKaacEnc_psyInit(PSY_INTERNAL *hPsy,
- PSY_OUT **phpsyOut,
- const INT nSubFrames,
- const INT nMaxChannels,
- const AUDIO_OBJECT_TYPE audioObjectType,
- CHANNEL_MAPPING *cm)
-{
- AAC_ENCODER_ERROR ErrorStatus = AAC_ENC_OK;
- int i, ch, n, chInc = 0, resetChannels = 3;
-
- if ( (nMaxChannels>2) && (cm->nChannels==2) ) {
- chInc = 1;
- FDKaacEnc_psyInitStates(hPsy, hPsy->pStaticChannels[0], audioObjectType);
- }
-
- if ( (nMaxChannels==2) ) {
- resetChannels = 0;
- }
-
- for (i=0; i<cm->nElements; i++) {
- for (ch=0; ch<cm->elInfo[i].nChannelsInEl; ch++) {
- if (cm->elInfo[i].elType!=ID_LFE) {
- hPsy->psyElement[i]->psyStatic[ch] = hPsy->pStaticChannels[chInc];
- if (chInc>=resetChannels) {
- FDKaacEnc_psyInitStates(hPsy, hPsy->psyElement[i]->psyStatic[ch], audioObjectType);
- }
- hPsy->psyElement[i]->psyStatic[ch]->isLFE = 0;
- }
- else {
- hPsy->psyElement[i]->psyStatic[ch] = hPsy->pStaticChannels[nMaxChannels-1];
- hPsy->psyElement[i]->psyStatic[ch]->isLFE = 1;
- }
- chInc++;
- }
- }
-
- for (n=0; n<nSubFrames; n++) {
- chInc = 0;
- for (i=0; i<cm->nElements; i++) {
- for (ch=0; ch<cm->elInfo[i].nChannelsInEl; ch++) {
- phpsyOut[n]->psyOutElement[i]->psyOutChannel[ch] = phpsyOut[n]->pPsyOutChannels[chInc++];
- }
- }
- }
-
- return ErrorStatus;
-}
-
-
-/*****************************************************************************
-
- functionname: FDKaacEnc_psyMainInit
- description: initializes psychoacoustic
- returns: an error code
-
-*****************************************************************************/
-
-AAC_ENCODER_ERROR FDKaacEnc_psyMainInit(PSY_INTERNAL *hPsy,
- AUDIO_OBJECT_TYPE audioObjectType,
- CHANNEL_MAPPING *cm,
- INT sampleRate,
- INT granuleLength,
- INT bitRate,
- INT tnsMask,
- INT bandwidth,
- INT usePns,
- INT useIS,
- UINT syntaxFlags,
- ULONG initFlags)
-{
- AAC_ENCODER_ERROR ErrorStatus;
- int i, ch;
- int channelsEff = cm->nChannelsEff;
- int tnsChannels = 0;
- FB_TYPE filterBank;
-
-
- switch(FDKaacEnc_GetMonoStereoMode(cm->encMode)) {
- /* ... and map to tnsChannels */
- case EL_MODE_MONO: tnsChannels = 1; break;
- case EL_MODE_STEREO: tnsChannels = 2; break;
- default: tnsChannels = 0;
- }
-
- switch (audioObjectType)
- {
- default: filterBank = FB_LC; break;
- case AOT_ER_AAC_LD: filterBank = FB_LD; break;
- case AOT_ER_AAC_ELD: filterBank = FB_ELD; break;
- }
-
- hPsy->granuleLength = granuleLength;
-
- ErrorStatus = FDKaacEnc_InitPsyConfiguration(bitRate/channelsEff, sampleRate, bandwidth, LONG_WINDOW, hPsy->granuleLength, useIS, &(hPsy->psyConf[0]), filterBank);
- if (ErrorStatus != AAC_ENC_OK)
- return ErrorStatus;
-
- ErrorStatus = FDKaacEnc_InitTnsConfiguration(
- (bitRate*tnsChannels)/channelsEff,
- sampleRate,
- tnsChannels,
- LONG_WINDOW,
- hPsy->granuleLength,
- (syntaxFlags&AC_SBR_PRESENT)?1:0,
- &(hPsy->psyConf[0].tnsConf),
- &hPsy->psyConf[0],
- (INT)(tnsMask&2),
- (INT)(tnsMask&8) );
-
- if (ErrorStatus != AAC_ENC_OK)
- return ErrorStatus;
-
- if (granuleLength > 512) {
- ErrorStatus = FDKaacEnc_InitPsyConfiguration(bitRate/channelsEff, sampleRate, bandwidth, SHORT_WINDOW, hPsy->granuleLength, useIS, &hPsy->psyConf[1], filterBank);
- if (ErrorStatus != AAC_ENC_OK)
- return ErrorStatus;
-
- ErrorStatus = FDKaacEnc_InitTnsConfiguration(
- (bitRate*tnsChannels)/channelsEff,
- sampleRate,
- tnsChannels,
- SHORT_WINDOW,
- hPsy->granuleLength,
- (syntaxFlags&AC_SBR_PRESENT)?1:0,
- &hPsy->psyConf[1].tnsConf,
- &hPsy->psyConf[1],
- (INT)(tnsMask&1),
- (INT)(tnsMask&4) );
-
- if (ErrorStatus != AAC_ENC_OK)
- return ErrorStatus;
-
- }
-
-
- for (i=0; i<cm->nElements; i++) {
- for (ch=0; ch<cm->elInfo[i].nChannelsInEl; ch++) {
- if (initFlags) {
- /* reset states */
- FDKaacEnc_psyInitStates(hPsy, hPsy->psyElement[i]->psyStatic[ch], audioObjectType);
- }
-
- FDKaacEnc_InitPreEchoControl(hPsy->psyElement[i]->psyStatic[ch]->sfbThresholdnm1,
- &hPsy->psyElement[i]->psyStatic[ch]->calcPreEcho,
- hPsy->psyConf[0].sfbCnt,
- hPsy->psyConf[0].sfbPcmQuantThreshold,
- &hPsy->psyElement[i]->psyStatic[ch]->mdctScalenm1);
- }
- }
-
- ErrorStatus = FDKaacEnc_InitPnsConfiguration(&hPsy->psyConf[0].pnsConf,
- bitRate/channelsEff,
- sampleRate,
- usePns,
- hPsy->psyConf[0].sfbCnt,
- hPsy->psyConf[0].sfbOffset,
- cm->elInfo[0].nChannelsInEl,
- (hPsy->psyConf[0].filterbank == FB_LC));
- if (ErrorStatus != AAC_ENC_OK)
- return ErrorStatus;
-
- ErrorStatus = FDKaacEnc_InitPnsConfiguration(&hPsy->psyConf[1].pnsConf,
- bitRate/channelsEff,
- sampleRate,
- usePns,
- hPsy->psyConf[1].sfbCnt,
- hPsy->psyConf[1].sfbOffset,
- cm->elInfo[1].nChannelsInEl,
- (hPsy->psyConf[1].filterbank == FB_LC));
- return ErrorStatus;
-}
-
-
-static
-void FDKaacEnc_deinterleaveInputBuffer(INT_PCM *pOutputSamples,
- INT_PCM *pInputSamples,
- INT nSamples,
- INT nChannels)
-{
- INT k;
- /* deinterlave input samples and write to output buffer */
- for (k=0; k<nSamples; k++) {
- pOutputSamples[k] = pInputSamples[k*nChannels];
- }
-}
-
-
-
-/*****************************************************************************
-
- functionname: FDKaacEnc_psyMain
- description: psychoacoustic
- returns: an error code
-
- This function assumes that enough input data is in the modulo buffer.
-
-*****************************************************************************/
-
-AAC_ENCODER_ERROR FDKaacEnc_psyMain(INT channels,
- PSY_ELEMENT *psyElement,
- PSY_DYNAMIC *psyDynamic,
- PSY_CONFIGURATION *psyConf,
- PSY_OUT_ELEMENT *RESTRICT psyOutElement,
- INT_PCM *pInput,
- INT *chIdx,
- INT totalChannels
- )
-{
- INT commonWindow = 1;
- INT maxSfbPerGroup[(2)];
- INT mdctSpectrum_e;
- INT ch; /* counts through channels */
- INT w; /* counts through windows */
- INT sfb; /* counts through scalefactor bands */
- INT line; /* counts through lines */
-
- PSY_CONFIGURATION *RESTRICT hPsyConfLong = &psyConf[0];
- PSY_CONFIGURATION *RESTRICT hPsyConfShort = &psyConf[1];
- PSY_OUT_CHANNEL **RESTRICT psyOutChannel = psyOutElement->psyOutChannel;
- FIXP_SGL sfbTonality[(2)][MAX_SFB_LONG];
-
- PSY_STATIC **RESTRICT psyStatic = psyElement->psyStatic;
-
- PSY_DATA *RESTRICT psyData[(2)];
- TNS_DATA *RESTRICT tnsData[(2)];
- PNS_DATA *RESTRICT pnsData[(2)];
-
- INT zeroSpec = TRUE; /* means all spectral lines are zero */
-
- INT blockSwitchingOffset;
-
- PSY_CONFIGURATION *RESTRICT hThisPsyConf[(2)];
- INT windowLength[(2)];
- INT nWindows[(2)];
- INT wOffset;
-
- INT maxSfb[(2)];
- INT *pSfbMaxScaleSpec[(2)];
- FIXP_DBL *pSfbEnergy[(2)];
- FIXP_DBL *pSfbSpreadEnergy[(2)];
- FIXP_DBL *pSfbEnergyLdData[(2)];
- FIXP_DBL *pSfbEnergyMS[(2)];
- FIXP_DBL *pSfbThreshold[(2)];
-
- INT isShortWindow[(2)];
-
-
- if (hPsyConfLong->filterbank == FB_LC) {
- blockSwitchingOffset = psyConf->granuleLength + (9*psyConf->granuleLength/(2*TRANS_FAC));
- } else {
- blockSwitchingOffset = psyConf->granuleLength;
- }
-
- for(ch = 0; ch < channels; ch++)
- {
- psyData[ch] = &psyDynamic->psyData[ch];
- tnsData[ch] = &psyDynamic->tnsData[ch];
- pnsData[ch] = &psyDynamic->pnsData[ch];
-
- psyData[ch]->mdctSpectrum = psyOutChannel[ch]->mdctSpectrum;
- }
-
- /* block switching */
- if (hPsyConfLong->filterbank != FB_ELD)
- {
- int err;
-
- for(ch = 0; ch < channels; ch++)
- {
- C_ALLOC_SCRATCH_START(pTimeSignal, INT_PCM, (1024))
-
- /* deinterleave input data and use for block switching */
- FDKaacEnc_deinterleaveInputBuffer( pTimeSignal,
- &pInput[chIdx[ch]],
- psyConf->granuleLength,
- totalChannels);
-
-
- FDKaacEnc_BlockSwitching (&psyStatic[ch]->blockSwitchingControl,
- psyConf->granuleLength,
- psyStatic[ch]->isLFE,
- pTimeSignal
- );
-
-
- /* fill up internal input buffer, to 2xframelength samples */
- FDKmemcpy(psyStatic[ch]->psyInputBuffer+blockSwitchingOffset,
- pTimeSignal,
- (2*psyConf->granuleLength-blockSwitchingOffset)*sizeof(INT_PCM));
-
- C_ALLOC_SCRATCH_END(pTimeSignal, INT_PCM, (1024))
- }
-
- /* synch left and right block type */
- err = FDKaacEnc_SyncBlockSwitching(&psyStatic[0]->blockSwitchingControl,
- &psyStatic[1]->blockSwitchingControl,
- channels,
- commonWindow);
-
- if (err) {
- return AAC_ENC_UNSUPPORTED_AOT; /* mixed up LC and LD */
- }
-
- }
- else {
- for(ch = 0; ch < channels; ch++)
- {
- /* deinterleave input data and use for block switching */
- FDKaacEnc_deinterleaveInputBuffer( psyStatic[ch]->psyInputBuffer + blockSwitchingOffset,
- &pInput[chIdx[ch]],
- psyConf->granuleLength,
- totalChannels);
- }
- }
-
- for(ch = 0; ch < channels; ch++)
- isShortWindow[ch]=(psyStatic[ch]->blockSwitchingControl.lastWindowSequence == SHORT_WINDOW);
-
- /* set parameters according to window length */
- for(ch = 0; ch < channels; ch++)
- {
- if(isShortWindow[ch]) {
- hThisPsyConf[ch] = hPsyConfShort;
- windowLength[ch] = psyConf->granuleLength/TRANS_FAC;
- nWindows[ch] = TRANS_FAC;
- maxSfb[ch] = MAX_SFB_SHORT;
-
- pSfbMaxScaleSpec[ch] = psyData[ch]->sfbMaxScaleSpec.Short[0];
- pSfbEnergy[ch] = psyData[ch]->sfbEnergy.Short[0];
- pSfbSpreadEnergy[ch] = psyData[ch]->sfbSpreadEnergy.Short[0];
- pSfbEnergyLdData[ch] = psyData[ch]->sfbEnergyLdData.Short[0];
- pSfbEnergyMS[ch] = psyData[ch]->sfbEnergyMS.Short[0];
- pSfbThreshold[ch] = psyData[ch]->sfbThreshold.Short[0];
-
- } else
- {
- hThisPsyConf[ch] = hPsyConfLong;
- windowLength[ch] = psyConf->granuleLength;
- nWindows[ch] = 1;
- maxSfb[ch] = MAX_GROUPED_SFB;
-
- pSfbMaxScaleSpec[ch] = psyData[ch]->sfbMaxScaleSpec.Long;
- pSfbEnergy[ch] = psyData[ch]->sfbEnergy.Long;
- pSfbSpreadEnergy[ch] = psyData[ch]->sfbSpreadEnergy.Long;
- pSfbEnergyLdData[ch] = psyData[ch]->sfbEnergyLdData.Long;
- pSfbEnergyMS[ch] = psyData[ch]->sfbEnergyMS.Long;
- pSfbThreshold[ch] = psyData[ch]->sfbThreshold.Long;
- }
- }
-
- /* Transform and get mdctScaling for all channels and windows. */
- for(ch = 0; ch < channels; ch++)
- {
- /* update number of active bands */
- if (psyStatic[ch]->isLFE) {
- psyData[ch]->sfbActive = hThisPsyConf[ch]->sfbActiveLFE;
- psyData[ch]->lowpassLine = hThisPsyConf[ch]->lowpassLineLFE;
- } else
- {
- psyData[ch]->sfbActive = hThisPsyConf[ch]->sfbActive;
- psyData[ch]->lowpassLine = hThisPsyConf[ch]->lowpassLine;
- }
-
- for(w = 0; w < nWindows[ch]; w++) {
-
- wOffset = w*windowLength[ch];
-
- FDKaacEnc_Transform_Real( psyStatic[ch]->psyInputBuffer + wOffset,
- psyData[ch]->mdctSpectrum+wOffset,
- psyStatic[ch]->blockSwitchingControl.lastWindowSequence,
- psyStatic[ch]->blockSwitchingControl.windowShape,
- &psyStatic[ch]->blockSwitchingControl.lastWindowShape,
- psyConf->granuleLength,
- &mdctSpectrum_e,
- hThisPsyConf[ch]->filterbank
- ,psyStatic[ch]->overlapAddBuffer
- );
-
- /* Low pass / highest sfb */
- FDKmemclear(&psyData[ch]->mdctSpectrum[psyData[ch]->lowpassLine+wOffset],
- (windowLength[ch]-psyData[ch]->lowpassLine)*sizeof(FIXP_DBL));
-
- if (hPsyConfLong->filterbank != FB_LC) {
- /* Do blending to reduce gibbs artifacts */
- for (int i=0; i<FADE_OUT_LEN; i++) {
- psyData[ch]->mdctSpectrum[psyData[ch]->lowpassLine+wOffset - FADE_OUT_LEN + i] = fMult(psyData[ch]->mdctSpectrum[psyData[ch]->lowpassLine+wOffset - FADE_OUT_LEN + i], fadeOutFactor[i]);
- }
- }
-
-
- /* Check for zero spectrum. These loops will usually terminate very, very early. */
- for(line=0; (line<psyData[ch]->lowpassLine) && (zeroSpec==TRUE); line++) {
- if (psyData[ch]->mdctSpectrum[line+wOffset] != (FIXP_DBL)0) {
- zeroSpec = FALSE;
- break;
- }
- }
-
- } /* w loop */
-
- psyData[ch]->mdctScale = mdctSpectrum_e;
-
- /* rotate internal time samples */
- FDKmemmove(psyStatic[ch]->psyInputBuffer,
- psyStatic[ch]->psyInputBuffer+psyConf->granuleLength,
- psyConf->granuleLength*sizeof(INT_PCM));
-
-
- /* ... and get remaining samples from input buffer */
- FDKaacEnc_deinterleaveInputBuffer( psyStatic[ch]->psyInputBuffer+psyConf->granuleLength,
- &pInput[ (2*psyConf->granuleLength-blockSwitchingOffset)*totalChannels + chIdx[ch] ],
- blockSwitchingOffset-psyConf->granuleLength,
- totalChannels);
-
- } /* ch */
-
- /* Do some rescaling to get maximum possible accuracy for energies */
- if ( zeroSpec == FALSE) {
-
- /* Calc possible spectrum leftshift for each sfb (1 means: 1 bit left shift is possible without overflow) */
- INT minSpecShift = MAX_SHIFT_DBL;
- INT nrgShift = MAX_SHIFT_DBL;
- INT finalShift = MAX_SHIFT_DBL;
- FIXP_DBL currNrg = 0;
- FIXP_DBL maxNrg = 0;
-
- for(ch = 0; ch < channels; ch++) {
- for(w = 0; w < nWindows[ch]; w++) {
- wOffset = w*windowLength[ch];
- FDKaacEnc_CalcSfbMaxScaleSpec(psyData[ch]->mdctSpectrum+wOffset,
- hThisPsyConf[ch]->sfbOffset,
- pSfbMaxScaleSpec[ch]+w*maxSfb[ch],
- psyData[ch]->sfbActive);
-
- for (sfb = 0; sfb<psyData[ch]->sfbActive; sfb++)
- minSpecShift = fixMin(minSpecShift, (pSfbMaxScaleSpec[ch]+w*maxSfb[ch])[sfb]);
- }
-
- }
-
- /* Calc possible energy leftshift for each sfb (1 means: 1 bit left shift is possible without overflow) */
- for(ch = 0; ch < channels; ch++) {
- for(w = 0; w < nWindows[ch]; w++) {
- wOffset = w*windowLength[ch];
- currNrg = FDKaacEnc_CheckBandEnergyOptim(psyData[ch]->mdctSpectrum+wOffset,
- pSfbMaxScaleSpec[ch]+w*maxSfb[ch],
- hThisPsyConf[ch]->sfbOffset,
- psyData[ch]->sfbActive,
- pSfbEnergy[ch]+w*maxSfb[ch],
- pSfbEnergyLdData[ch]+w*maxSfb[ch],
- minSpecShift-4);
-
- maxNrg = fixMax(maxNrg, currNrg);
- }
- }
-
- if ( maxNrg != (FIXP_DBL)0 ) {
- nrgShift = (CountLeadingBits(maxNrg)>>1) + (minSpecShift-4);
- }
-
- /* 2check: Hasn't this decision to be made for both channels? */
- /* For short windows 1 additional bit headroom is necessary to prevent overflows when summing up energies in FDKaacEnc_groupShortData() */
- if(isShortWindow[0]) nrgShift--;
-
- /* both spectrum and energies mustn't overflow */
- finalShift = fixMin(minSpecShift, nrgShift);
-
- /* do not shift more than 3 bits more to the left than signal without blockfloating point
- * would be to avoid overflow of scaled PCM quantization thresholds */
- if (finalShift > psyData[0]->mdctScale + 3 )
- finalShift = psyData[0]->mdctScale + 3;
-
- FDK_ASSERT(finalShift >= 0); /* right shift is not allowed */
-
- /* correct sfbEnergy and sfbEnergyLdData with new finalShift */
- FIXP_DBL ldShift = finalShift * FL2FXCONST_DBL(2.0/64);
- for(ch = 0; ch < channels; ch++) {
- for(w = 0; w < nWindows[ch]; w++) {
- for(sfb=0; sfb<psyData[ch]->sfbActive; sfb++) {
- INT scale = fixMax(0, (pSfbMaxScaleSpec[ch]+w*maxSfb[ch])[sfb]-4);
- scale = fixMin((scale-finalShift)<<1, DFRACT_BITS-1);
- if (scale >= 0) (pSfbEnergy[ch]+w*maxSfb[ch])[sfb] >>= (scale);
- else (pSfbEnergy[ch]+w*maxSfb[ch])[sfb] <<= (-scale);
- (pSfbThreshold[ch]+w*maxSfb[ch])[sfb] = fMult((pSfbEnergy[ch]+w*maxSfb[ch])[sfb], C_RATIO);
- (pSfbEnergyLdData[ch]+w*maxSfb[ch])[sfb] += ldShift;
- }
- }
- }
-
- if ( finalShift != 0 ) {
- for (ch = 0; ch < channels; ch++) {
- for(w = 0; w < nWindows[ch]; w++) {
- wOffset = w*windowLength[ch];
- for(line=0; line<psyData[ch]->lowpassLine; line++) {
- psyData[ch]->mdctSpectrum[line+wOffset] <<= finalShift;
- }
- /* update sfbMaxScaleSpec */
- for (sfb = 0; sfb<psyData[ch]->sfbActive; sfb++)
- (pSfbMaxScaleSpec[ch]+w*maxSfb[ch])[sfb] -= finalShift;
- }
- /* update mdctScale */
- psyData[ch]->mdctScale -= finalShift;
- }
- }
-
- } else {
- /* all spectral lines are zero */
- for (ch = 0; ch < channels; ch++) {
- psyData[ch]->mdctScale = 0; /* otherwise mdctScale would be for example 7 and PCM quantization thresholds would be shifted
- * 14 bits to the right causing some of them to become 0 (which causes problems later) */
- /* clear sfbMaxScaleSpec */
- for(w = 0; w < nWindows[ch]; w++) {
- for (sfb = 0; sfb<psyData[ch]->sfbActive; sfb++) {
- (pSfbMaxScaleSpec[ch]+w*maxSfb[ch])[sfb] = 0;
- (pSfbEnergy[ch]+w*maxSfb[ch])[sfb] = (FIXP_DBL)0;
- (pSfbEnergyLdData[ch]+w*maxSfb[ch])[sfb] = FL2FXCONST_DBL(-1.0f);
- (pSfbThreshold[ch]+w*maxSfb[ch])[sfb] = (FIXP_DBL)0;
- }
- }
- }
- }
-
- /* Advance psychoacoustics: Tonality and TNS */
- if (psyStatic[0]->isLFE) {
- tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive = 0;
- }
- else
- {
-
- for(ch = 0; ch < channels; ch++) {
- if (!isShortWindow[ch]) {
- /* tonality */
- FDKaacEnc_CalculateFullTonality( psyData[ch]->mdctSpectrum,
- pSfbMaxScaleSpec[ch],
- pSfbEnergyLdData[ch],
- sfbTonality[ch],
- psyData[ch]->sfbActive,
- hThisPsyConf[ch]->sfbOffset,
- hThisPsyConf[ch]->pnsConf.usePns);
- }
- }
-
- if (hPsyConfLong->tnsConf.tnsActive || hPsyConfShort->tnsConf.tnsActive) {
- INT tnsActive[TRANS_FAC];
- INT nrgScaling[2] = {0,0};
- INT tnsSpecShift = 0;
-
- for(ch = 0; ch < channels; ch++) {
- for(w = 0; w < nWindows[ch]; w++) {
-
- wOffset = w*windowLength[ch];
- /* TNS */
- FDKaacEnc_TnsDetect(
- tnsData[ch],
- &hThisPsyConf[ch]->tnsConf,
- &psyOutChannel[ch]->tnsInfo,
- hThisPsyConf[ch]->sfbCnt,
- psyData[ch]->mdctSpectrum+wOffset,
- w,
- psyStatic[ch]->blockSwitchingControl.lastWindowSequence
- );
- }
- }
-
- if (channels == 2) {
- FDKaacEnc_TnsSync(
- tnsData[1],
- tnsData[0],
- &psyOutChannel[1]->tnsInfo,
- &psyOutChannel[0]->tnsInfo,
-
- psyStatic[1]->blockSwitchingControl.lastWindowSequence,
- psyStatic[0]->blockSwitchingControl.lastWindowSequence,
- &hThisPsyConf[1]->tnsConf);
- }
-
- FDK_ASSERT(commonWindow==1); /* all checks for TNS do only work for common windows (which is always set)*/
- for(w = 0; w < nWindows[0]; w++)
- {
- if (isShortWindow[0])
- tnsActive[w] = tnsData[0]->dataRaw.Short.subBlockInfo[w].tnsActive ||
- ((channels == 2) ? tnsData[1]->dataRaw.Short.subBlockInfo[w].tnsActive : 0);
- else
- tnsActive[w] = tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive ||
- ((channels == 2) ? tnsData[1]->dataRaw.Long.subBlockInfo.tnsActive : 0);
- }
-
- for(ch = 0; ch < channels; ch++) {
- if (tnsActive[0] && !isShortWindow[ch]) {
- /* Scale down spectrum if tns is active in one of the two channels with same lastWindowSequence */
- /* first part of threshold calculation; it's not necessary to update sfbMaxScaleSpec */
- INT shift = 1;
- for(sfb=0; sfb<hThisPsyConf[ch]->lowpassLine; sfb++) {
- psyData[ch]->mdctSpectrum[sfb] = psyData[ch]->mdctSpectrum[sfb] >> shift;
- }
-
- /* update thresholds */
- for (sfb=0; sfb<psyData[ch]->sfbActive; sfb++) {
- pSfbThreshold[ch][sfb] >>= (2*shift);
- }
-
- psyData[ch]->mdctScale += shift; /* update mdctScale */
-
- /* calc sfbEnergies after tnsEncode again ! */
-
- }
- }
-
- for(ch = 0; ch < channels; ch++) {
- for(w = 0; w < nWindows[ch]; w++)
- {
- wOffset = w*windowLength[ch];
- FDKaacEnc_TnsEncode(
- &psyOutChannel[ch]->tnsInfo,
- tnsData[ch],
- hThisPsyConf[ch]->sfbCnt,
- &hThisPsyConf[ch]->tnsConf,
- hThisPsyConf[ch]->sfbOffset[psyData[ch]->sfbActive],/*hThisPsyConf[ch]->lowpassLine*/ /* filter stops before that line ! */
- psyData[ch]->mdctSpectrum+wOffset,
- w,
- psyStatic[ch]->blockSwitchingControl.lastWindowSequence);
-
- if(tnsActive[w]) {
- /* Calc sfb-bandwise mdct-energies for left and right channel again, */
- /* if tns active in current channel or in one channel with same lastWindowSequence left and right */
- FDKaacEnc_CalcSfbMaxScaleSpec(psyData[ch]->mdctSpectrum+wOffset,
- hThisPsyConf[ch]->sfbOffset,
- pSfbMaxScaleSpec[ch]+w*maxSfb[ch],
- psyData[ch]->sfbActive);
- }
- }
- }
-
- for(ch = 0; ch < channels; ch++) {
- for(w = 0; w < nWindows[ch]; w++) {
-
- if (tnsActive[w]) {
-
- if (isShortWindow[ch]) {
- FDKaacEnc_CalcBandEnergyOptimShort(psyData[ch]->mdctSpectrum+w*windowLength[ch],
- pSfbMaxScaleSpec[ch]+w*maxSfb[ch],
- hThisPsyConf[ch]->sfbOffset,
- psyData[ch]->sfbActive,
- pSfbEnergy[ch]+w*maxSfb[ch]);
- }
- else {
- nrgScaling[ch] = /* with tns, energy calculation can overflow; -> scaling */
- FDKaacEnc_CalcBandEnergyOptimLong(psyData[ch]->mdctSpectrum,
- pSfbMaxScaleSpec[ch],
- hThisPsyConf[ch]->sfbOffset,
- psyData[ch]->sfbActive,
- pSfbEnergy[ch],
- pSfbEnergyLdData[ch]);
- tnsSpecShift = fixMax(tnsSpecShift, nrgScaling[ch]); /* nrgScaling is set only if nrg would have an overflow */
- }
- } /* if tnsActive */
- }
- } /* end channel loop */
-
- /* adapt scaling to prevent nrg overflow, only for long blocks */
- for(ch = 0; ch < channels; ch++) {
- if ( (tnsSpecShift!=0) && !isShortWindow[ch] ) {
- /* scale down spectrum, nrg's and thresholds, if there was an overflow in sfbNrg calculation after tns */
- for(line=0; line<hThisPsyConf[ch]->lowpassLine; line++) {
- psyData[ch]->mdctSpectrum[line] >>= tnsSpecShift;
- }
- INT scale = (tnsSpecShift-nrgScaling[ch])<<1;
- for(sfb=0; sfb<psyData[ch]->sfbActive; sfb++) {
- pSfbEnergyLdData[ch][sfb] -= scale*FL2FXCONST_DBL(1.0/LD_DATA_SCALING);
- pSfbEnergy[ch][sfb] >>= scale;
- pSfbThreshold[ch][sfb] >>= (tnsSpecShift<<1);
- }
- psyData[ch]->mdctScale += tnsSpecShift; /* update mdctScale; not necessary to update sfbMaxScaleSpec */
-
- }
- } /* end channel loop */
-
- } /* TNS active */
- } /* !isLFE */
-
-
-
-
-
-
- /* Advance thresholds */
- for(ch = 0; ch < channels; ch++) {
- INT headroom;
-
- FIXP_DBL clipEnergy;
- INT energyShift = psyData[ch]->mdctScale*2 ;
- INT clipNrgShift = energyShift - THR_SHIFTBITS ;
-
- if(isShortWindow[ch])
- headroom = 6;
- else
- headroom = 0;
-
- if (clipNrgShift >= 0)
- clipEnergy = hThisPsyConf[ch]->clipEnergy >> clipNrgShift ;
- else if (clipNrgShift>=-headroom)
- clipEnergy = hThisPsyConf[ch]->clipEnergy << -clipNrgShift ;
- else
- clipEnergy = (FIXP_DBL)MAXVAL_DBL ;
-
- for(w = 0; w < nWindows[ch]; w++)
- {
- INT i;
- /* limit threshold to avoid clipping */
- for (i=0; i<psyData[ch]->sfbActive; i++) {
- *(pSfbThreshold[ch]+w*maxSfb[ch]+i) = fixMin(*(pSfbThreshold[ch]+w*maxSfb[ch]+i), clipEnergy);
- }
-
- /* spreading */
- FDKaacEnc_SpreadingMax(psyData[ch]->sfbActive,
- hThisPsyConf[ch]->sfbMaskLowFactor,
- hThisPsyConf[ch]->sfbMaskHighFactor,
- pSfbThreshold[ch]+w*maxSfb[ch]);
-
-
- /* PCM quantization threshold */
- energyShift += PCM_QUANT_THR_SCALE;
- if (energyShift>=0) {
- energyShift = fixMin(DFRACT_BITS-1,energyShift);
- for (i=0; i<psyData[ch]->sfbActive;i++) {
- *(pSfbThreshold[ch]+w*maxSfb[ch]+i) = fixMax(*(pSfbThreshold[ch]+w*maxSfb[ch]+i) >> THR_SHIFTBITS,
- (hThisPsyConf[ch]->sfbPcmQuantThreshold[i] >> energyShift));
- }
- } else {
- energyShift = fixMin(DFRACT_BITS-1,-energyShift);
- for (i=0; i<psyData[ch]->sfbActive;i++) {
- *(pSfbThreshold[ch]+w*maxSfb[ch]+i) = fixMax(*(pSfbThreshold[ch]+w*maxSfb[ch]+i) >> THR_SHIFTBITS,
- (hThisPsyConf[ch]->sfbPcmQuantThreshold[i] << energyShift));
- }
- }
-
- if (!psyStatic[ch]->isLFE)
- {
- /* preecho control */
- if(psyStatic[ch]->blockSwitchingControl.lastWindowSequence == STOP_WINDOW) {
- /* prevent FDKaacEnc_PreEchoControl from comparing stop
- thresholds with short thresholds */
- for (i=0; i<psyData[ch]->sfbActive;i++) {
- psyStatic[ch]->sfbThresholdnm1[i] = (FIXP_DBL)MAXVAL_DBL;
- }
-
- psyStatic[ch]->mdctScalenm1 = 0;
- psyStatic[ch]->calcPreEcho = 0;
- }
-
- FDKaacEnc_PreEchoControl( psyStatic[ch]->sfbThresholdnm1,
- psyStatic[ch]->calcPreEcho,
- psyData[ch]->sfbActive,
- hThisPsyConf[ch]->maxAllowedIncreaseFactor,
- hThisPsyConf[ch]->minRemainingThresholdFactor,
- pSfbThreshold[ch]+w*maxSfb[ch],
- psyData[ch]->mdctScale,
- &psyStatic[ch]->mdctScalenm1);
-
- psyStatic[ch]->calcPreEcho = 1;
-
- if(psyStatic[ch]->blockSwitchingControl.lastWindowSequence == START_WINDOW)
- {
- /* prevent FDKaacEnc_PreEchoControl in next frame to compare start
- thresholds with short thresholds */
- for (i=0; i<psyData[ch]->sfbActive;i++) {
- psyStatic[ch]->sfbThresholdnm1[i] = (FIXP_DBL)MAXVAL_DBL;
- }
-
- psyStatic[ch]->mdctScalenm1 = 0;
- psyStatic[ch]->calcPreEcho = 0;
- }
-
- }
-
- /* spread energy to avoid hole detection */
- FDKmemcpy(pSfbSpreadEnergy[ch]+w*maxSfb[ch], pSfbEnergy[ch]+w*maxSfb[ch], psyData[ch]->sfbActive*sizeof(FIXP_DBL));
-
- FDKaacEnc_SpreadingMax(psyData[ch]->sfbActive,
- hThisPsyConf[ch]->sfbMaskLowFactorSprEn,
- hThisPsyConf[ch]->sfbMaskHighFactorSprEn,
- pSfbSpreadEnergy[ch]+w*maxSfb[ch]);
- }
- }
-
- /* Calc bandwise energies for mid and side channel. Do it only if 2 channels exist */
- if (channels==2) {
- for(w = 0; w < nWindows[1]; w++) {
- wOffset = w*windowLength[1];
- FDKaacEnc_CalcBandNrgMSOpt(psyData[0]->mdctSpectrum+wOffset,
- psyData[1]->mdctSpectrum+wOffset,
- pSfbMaxScaleSpec[0]+w*maxSfb[0],
- pSfbMaxScaleSpec[1]+w*maxSfb[1],
- hThisPsyConf[1]->sfbOffset,
- psyData[0]->sfbActive,
- pSfbEnergyMS[0]+w*maxSfb[0],
- pSfbEnergyMS[1]+w*maxSfb[1],
- (psyStatic[1]->blockSwitchingControl.lastWindowSequence != SHORT_WINDOW),
- psyData[0]->sfbEnergyMSLdData,
- psyData[1]->sfbEnergyMSLdData);
- }
- }
-
- /* group short data (maxSfb[ch] for short blocks is determined here) */
- for(ch=0;ch<channels;ch++)
- {
- INT noSfb, i;
- if(isShortWindow[ch])
- {
- int sfbGrp;
- noSfb = psyStatic[ch]->blockSwitchingControl.noOfGroups * hPsyConfShort->sfbCnt;
- /* At this point, energies and thresholds are copied/regrouped from the ".Short" to the ".Long" arrays */
- FDKaacEnc_groupShortData( psyData[ch]->mdctSpectrum,
- &psyData[ch]->sfbThreshold,
- &psyData[ch]->sfbEnergy,
- &psyData[ch]->sfbEnergyMS,
- &psyData[ch]->sfbSpreadEnergy,
- hPsyConfShort->sfbCnt,
- psyData[ch]->sfbActive,
- hPsyConfShort->sfbOffset,
- hPsyConfShort->sfbMinSnrLdData,
- psyData[ch]->groupedSfbOffset,
- &maxSfbPerGroup[ch],
- psyOutChannel[ch]->sfbMinSnrLdData,
- psyStatic[ch]->blockSwitchingControl.noOfGroups,
- psyStatic[ch]->blockSwitchingControl.groupLen,
- psyConf[1].granuleLength);
-
-
- /* calculate ldData arrays (short values are in .Long-arrays after FDKaacEnc_groupShortData) */
- for (sfbGrp = 0; sfbGrp < noSfb; sfbGrp += hPsyConfShort->sfbCnt) {
- LdDataVector(&psyData[ch]->sfbEnergy.Long[sfbGrp], &psyOutChannel[ch]->sfbEnergyLdData[sfbGrp], psyData[ch]->sfbActive);
- }
-
- /* calc sfbThrld and set Values smaller 2^-31 to 2^-33*/
- for (sfbGrp = 0; sfbGrp < noSfb; sfbGrp += hPsyConfShort->sfbCnt) {
- LdDataVector(&psyData[ch]->sfbThreshold.Long[sfbGrp], &psyOutChannel[ch]->sfbThresholdLdData[sfbGrp], psyData[ch]->sfbActive);
- for (sfb=0;sfb<psyData[ch]->sfbActive;sfb++) {
- psyOutChannel[ch]->sfbThresholdLdData[sfbGrp+sfb] =
- fixMax(psyOutChannel[ch]->sfbThresholdLdData[sfbGrp+sfb], FL2FXCONST_DBL(-0.515625f));
- }
- }
-
- if ( channels==2 ) {
- for (sfbGrp = 0; sfbGrp < noSfb; sfbGrp += hPsyConfShort->sfbCnt) {
- LdDataVector(&psyData[ch]->sfbEnergyMS.Long[sfbGrp], &psyData[ch]->sfbEnergyMSLdData[sfbGrp], psyData[ch]->sfbActive);
- }
- }
-
- FDKmemcpy(psyOutChannel[ch]->sfbOffsets, psyData[ch]->groupedSfbOffset, (MAX_GROUPED_SFB+1)*sizeof(INT));
-
- } else {
- /* maxSfb[ch] for long blocks */
- for (sfb = psyData[ch]->sfbActive-1; sfb >= 0; sfb--) {
- for (line = hPsyConfLong->sfbOffset[sfb+1]-1; line >= hPsyConfLong->sfbOffset[sfb]; line--) {
- if (psyData[ch]->mdctSpectrum[line] != FL2FXCONST_SGL(0.0f)) break;
- }
- if (line > hPsyConfLong->sfbOffset[sfb]) break;
- }
- maxSfbPerGroup[ch] = sfb + 1;
- /* ensure at least one section in ICS; workaround for existing decoder crc implementation */
- maxSfbPerGroup[ch] = fixMax(fixMin(5,psyData[ch]->sfbActive),maxSfbPerGroup[ch]);
-
- /* sfbNrgLdData is calculated in FDKaacEnc_advancePsychLong, copy in psyOut structure */
- FDKmemcpy(psyOutChannel[ch]->sfbEnergyLdData, psyData[ch]->sfbEnergyLdData.Long, psyData[ch]->sfbActive*sizeof(FIXP_DBL));
-
- FDKmemcpy(psyOutChannel[ch]->sfbOffsets, hPsyConfLong->sfbOffset, (MAX_GROUPED_SFB+1)*sizeof(INT));
-
- /* sfbMinSnrLdData modified in adjust threshold, copy necessary */
- FDKmemcpy(psyOutChannel[ch]->sfbMinSnrLdData, hPsyConfLong->sfbMinSnrLdData, psyData[ch]->sfbActive*sizeof(FIXP_DBL));
-
- /* sfbEnergyMSLdData ist already calculated in FDKaacEnc_CalcBandNrgMSOpt; only in long case */
-
- /* calc sfbThrld and set Values smaller 2^-31 to 2^-33*/
- LdDataVector(psyData[ch]->sfbThreshold.Long, psyOutChannel[ch]->sfbThresholdLdData, psyData[ch]->sfbActive);
- for (i=0;i<psyData[ch]->sfbActive;i++) {
- psyOutChannel[ch]->sfbThresholdLdData[i] =
- fixMax(psyOutChannel[ch]->sfbThresholdLdData[i], FL2FXCONST_DBL(-0.515625f));
- }
-
-
- }
-
-
- }
-
-
- /*
- Intensity parameter intialization.
- */
- for(ch=0;ch<channels;ch++) {
- FDKmemclear(psyOutChannel[ch]->isBook, MAX_GROUPED_SFB*sizeof(INT));
- FDKmemclear(psyOutChannel[ch]->isScale, MAX_GROUPED_SFB*sizeof(INT));
- }
-
- for(ch=0;ch<channels;ch++) {
- INT win = (isShortWindow[ch]?1:0);
- if (!psyStatic[ch]->isLFE)
- {
- /* PNS Decision */
- FDKaacEnc_PnsDetect( &(psyConf[0].pnsConf),
- pnsData[ch],
- psyStatic[ch]->blockSwitchingControl.lastWindowSequence,
- psyData[ch]->sfbActive,
- maxSfbPerGroup[ch], /* count of Sfb which are not zero. */
- psyOutChannel[ch]->sfbThresholdLdData,
- psyConf[win].sfbOffset,
- psyData[ch]->mdctSpectrum,
- psyData[ch]->sfbMaxScaleSpec.Long,
- sfbTonality[ch],
- psyOutChannel[ch]->tnsInfo.order[0][0],
- tnsData[ch]->dataRaw.Long.subBlockInfo.predictionGain,
- tnsData[ch]->dataRaw.Long.subBlockInfo.tnsActive,
- psyOutChannel[ch]->sfbEnergyLdData,
- psyOutChannel[ch]->noiseNrg );
- } /* !isLFE */
- }
-
- /*
- stereo Processing
- */
- if(channels == 2)
- {
- psyOutElement->toolsInfo.msDigest = MS_NONE;
- psyOutElement->commonWindow = commonWindow;
- if (psyOutElement->commonWindow)
- maxSfbPerGroup[0] = maxSfbPerGroup[1] =
- fixMax(maxSfbPerGroup[0], maxSfbPerGroup[1]);
-
- if(psyStatic[0]->blockSwitchingControl.lastWindowSequence != SHORT_WINDOW)
- {
- /* PNS preprocessing depending on ms processing: PNS not in Short Window! */
- FDKaacEnc_PreProcessPnsChannelPair(
- psyData[0]->sfbActive,
- (&psyData[0]->sfbEnergy)->Long,
- (&psyData[1]->sfbEnergy)->Long,
- psyOutChannel[0]->sfbEnergyLdData,
- psyOutChannel[1]->sfbEnergyLdData,
- psyData[0]->sfbEnergyMS.Long,
- &(psyConf[0].pnsConf),
- pnsData[0],
- pnsData[1]);
-
- FDKaacEnc_IntensityStereoProcessing(
- psyData[0]->sfbEnergy.Long,
- psyData[1]->sfbEnergy.Long,
- psyData[0]->mdctSpectrum,
- psyData[1]->mdctSpectrum,
- psyData[0]->sfbThreshold.Long,
- psyData[1]->sfbThreshold.Long,
- psyOutChannel[1]->sfbThresholdLdData,
- psyData[0]->sfbSpreadEnergy.Long,
- psyData[1]->sfbSpreadEnergy.Long,
- psyOutChannel[0]->sfbEnergyLdData,
- psyOutChannel[1]->sfbEnergyLdData,
- &psyOutElement->toolsInfo.msDigest,
- psyOutElement->toolsInfo.msMask,
- psyConf[0].sfbCnt,
- psyConf[0].sfbCnt,
- maxSfbPerGroup[0],
- psyConf[0].sfbOffset,
- psyConf[0].allowIS && commonWindow,
- psyOutChannel[1]->isBook,
- psyOutChannel[1]->isScale,
- pnsData);
-
- FDKaacEnc_MsStereoProcessing(
- psyData,
- psyOutChannel,
- psyOutChannel[1]->isBook,
- &psyOutElement->toolsInfo.msDigest,
- psyOutElement->toolsInfo.msMask,
- psyData[0]->sfbActive,
- psyData[0]->sfbActive,
- maxSfbPerGroup[0],
- psyOutChannel[0]->sfbOffsets);
-
- /* PNS postprocessing */
- FDKaacEnc_PostProcessPnsChannelPair(psyData[0]->sfbActive,
- &(psyConf[0].pnsConf),
- pnsData[0],
- pnsData[1],
- psyOutElement->toolsInfo.msMask,
- &psyOutElement->toolsInfo.msDigest);
-
- } else {
- FDKaacEnc_IntensityStereoProcessing(
- psyData[0]->sfbEnergy.Long,
- psyData[1]->sfbEnergy.Long,
- psyData[0]->mdctSpectrum,
- psyData[1]->mdctSpectrum,
- psyData[0]->sfbThreshold.Long,
- psyData[1]->sfbThreshold.Long,
- psyOutChannel[1]->sfbThresholdLdData,
- psyData[0]->sfbSpreadEnergy.Long,
- psyData[1]->sfbSpreadEnergy.Long,
- psyOutChannel[0]->sfbEnergyLdData,
- psyOutChannel[1]->sfbEnergyLdData,
- &psyOutElement->toolsInfo.msDigest,
- psyOutElement->toolsInfo.msMask,
- psyStatic[0]->blockSwitchingControl.noOfGroups*hPsyConfShort->sfbCnt,
- psyConf[1].sfbCnt,
- maxSfbPerGroup[0],
- psyData[0]->groupedSfbOffset,
- psyConf[0].allowIS && commonWindow,
- psyOutChannel[1]->isBook,
- psyOutChannel[1]->isScale,
- pnsData);
-
- /* it's OK to pass the ".Long" arrays here. They contain grouped short data since FDKaacEnc_groupShortData() */
- FDKaacEnc_MsStereoProcessing( psyData,
- psyOutChannel,
- psyOutChannel[1]->isBook,
- &psyOutElement->toolsInfo.msDigest,
- psyOutElement->toolsInfo.msMask,
- psyStatic[0]->blockSwitchingControl.noOfGroups*hPsyConfShort->sfbCnt,
- hPsyConfShort->sfbCnt,
- maxSfbPerGroup[0],
- psyOutChannel[0]->sfbOffsets);
- }
- }
-
- /*
- PNS Coding
- */
- for(ch=0;ch<channels;ch++) {
- if (psyStatic[ch]->isLFE) {
- /* no PNS coding */
- for(sfb = 0; sfb < psyData[ch]->sfbActive; sfb++) {
- psyOutChannel[ch]->noiseNrg[sfb] = NO_NOISE_PNS;
- }
- } else
- {
- FDKaacEnc_CodePnsChannel(psyData[ch]->sfbActive,
- &(psyConf[ch].pnsConf),
- pnsData[ch]->pnsFlag,
- psyData[ch]->sfbEnergyLdData.Long,
- psyOutChannel[ch]->noiseNrg, /* this is the energy that will be written to the bitstream */
- psyOutChannel[ch]->sfbThresholdLdData);
- }
- }
-
- /*
- build output
- */
- for(ch=0;ch<channels;ch++)
- {
- INT j, grp, mask;
-
- psyOutChannel[ch]->maxSfbPerGroup = maxSfbPerGroup[ch];
- psyOutChannel[ch]->mdctScale = psyData[ch]->mdctScale;
-
- if(isShortWindow[ch]==0) {
-
- psyOutChannel[ch]->sfbCnt = hPsyConfLong->sfbActive;
- psyOutChannel[ch]->sfbPerGroup = hPsyConfLong->sfbActive;
- psyOutChannel[ch]->lastWindowSequence = psyStatic[ch]->blockSwitchingControl.lastWindowSequence;
- psyOutChannel[ch]->windowShape = psyStatic[ch]->blockSwitchingControl.windowShape;
- }
- else {
- INT sfbCnt = psyStatic[ch]->blockSwitchingControl.noOfGroups*hPsyConfShort->sfbCnt;
-
- psyOutChannel[ch]->sfbCnt = sfbCnt;
- psyOutChannel[ch]->sfbPerGroup = hPsyConfShort->sfbCnt;
- psyOutChannel[ch]->lastWindowSequence = SHORT_WINDOW;
- psyOutChannel[ch]->windowShape = SINE_WINDOW;
- }
-
- /* generate grouping mask */
- mask = 0;
- for (grp = 0; grp < psyStatic[ch]->blockSwitchingControl.noOfGroups; grp++)
- {
- mask <<= 1;
- for (j=1; j<psyStatic[ch]->blockSwitchingControl.groupLen[grp]; j++) {
- mask = (mask<<1) | 1 ;
- }
- }
- psyOutChannel[ch]->groupingMask = mask;
-
- /* build interface */
- FDKmemcpy(psyOutChannel[ch]->groupLen,psyStatic[ch]->blockSwitchingControl.groupLen,MAX_NO_OF_GROUPS*sizeof(INT));
- FDKmemcpy(psyOutChannel[ch]->sfbEnergy,(&psyData[ch]->sfbEnergy)->Long, MAX_GROUPED_SFB*sizeof(FIXP_DBL));
- FDKmemcpy(psyOutChannel[ch]->sfbSpreadEnergy,(&psyData[ch]->sfbSpreadEnergy)->Long, MAX_GROUPED_SFB*sizeof(FIXP_DBL));
-// FDKmemcpy(psyOutChannel[ch]->mdctSpectrum, psyData[ch]->mdctSpectrum, (1024)*sizeof(FIXP_DBL));
- }
-
- return AAC_ENC_OK;
-}
-
-
-void FDKaacEnc_PsyClose(PSY_INTERNAL **phPsyInternal,
- PSY_OUT **phPsyOut)
-{
- int n, i;
-
-
- if(phPsyInternal!=NULL) {
- PSY_INTERNAL *hPsyInternal = *phPsyInternal;
-
- if (hPsyInternal)
- {
- for (i=0; i<(8); i++) {
- if (hPsyInternal->pStaticChannels[i]) {
- if (hPsyInternal->pStaticChannels[i]->psyInputBuffer)
- FreeRam_aacEnc_PsyInputBuffer(&hPsyInternal->pStaticChannels[i]->psyInputBuffer); /* AUDIO INPUT BUFFER */
-
- FreeRam_aacEnc_PsyStatic(&hPsyInternal->pStaticChannels[i]); /* PSY_STATIC */
- }
- }
-
- for (i=0; i<(8); i++) {
- if (hPsyInternal->psyElement[i])
- FreeRam_aacEnc_PsyElement(&hPsyInternal->psyElement[i]); /* PSY_ELEMENT */
- }
-
-
- FreeRam_aacEnc_PsyInternal(phPsyInternal);
- }
- }
-
- if (phPsyOut!=NULL) {
- for (n=0; n<(1); n++) {
- if (phPsyOut[n])
- {
- for (i=0; i<(8); i++) {
- if (phPsyOut[n]->pPsyOutChannels[i])
- FreeRam_aacEnc_PsyOutChannel(&phPsyOut[n]->pPsyOutChannels[i]); /* PSY_OUT_CHANNEL */
- }
-
- for (i=0; i<(8); i++) {
- if (phPsyOut[n]->psyOutElement[i])
- FreeRam_aacEnc_PsyOutElements(&phPsyOut[n]->psyOutElement[i]); /* PSY_OUT_ELEMENTS */
- }
-
- FreeRam_aacEnc_PsyOut(&phPsyOut[n]);
- }
- }
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 16:19:44 +0000