AAC/SBR encoder improvements
* AAC-Encoder
- AAC-ELD core encoder audio quality tuning. Update tuning tables, configure
bitreservoir size and adapt afterburner iteration value.
Modified file(s):
libAACenc/src/aacenc.h
libAACenc/src/aacenc_lib.cpp
libAACenc/src/adj_thr.cpp
libAACenc/src/adj_thr.h
libAACenc/src/adj_thr_data.h
libAACenc/src/bandwidth.cpp
libAACenc/src/pnsparam.cpp
libAACenc/src/qc_main.cpp
- Introduze dead zone quantizer for ELD to improve audio quality at certain
configurations.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/adj_thr.cpp
libAACenc/src/adj_thr.h
libAACenc/src/qc_data.h
libAACenc/src/qc_main.cpp
libAACenc/src/quantize.cpp
libAACenc/src/quantize.h
libAACenc/src/sf_estim.cpp
libAACenc/src/sf_estim.h
- Revise TNS module to improve ELD audio quality.
- Use new window function and separate prediction gain according TNS filters.
- Add missing memory initilization to TNS configuration.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/aacenc_tns.cpp
libAACenc/src/aacenc_tns.h
libAACenc/src/psy_main.cpp
libAACenc/src/tns_func.h
* SBR-Encoder
- Revise frequency resolution calculation and handle differently depending
on number of envelopes and split frames decision.
- Add and adjust ELD SBR tuning tables.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/fram_gen.cpp
libSBRenc/src/fram_gen.h
libSBRenc/src/mh_det.cpp
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/sbr_rom.cpp
libSBRenc/src/tran_det.cpp
- Replace ELD transient detector with fast implementation.
Modified file(s):
libSBRenc/src/env_est.cpp
libSBRenc/src/env_est.h
libSBRenc/src/fram_gen.cpp
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
* FDK-Library
- Introduce generic compare function in tools library.
Modified file(s):
libFDK/include/fixpoint_math.h
libFDK/src/FDK_core.cpp
* SBR-Encoder
- Revise ELD frame splitter to improve bit distribution.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/fram_gen.cpp
libSBRenc/src/fram_gen.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
- Configure amplitude resolution according the tonality of the audio signal.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/nf_est.cpp
libSBRenc/src/nf_est.h
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/ton_corr.cpp
libSBRenc/src/ton_corr.h
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
Change-Id: Ie0672b989a06ee63b50240616b8d1d4b790b6cb2
diff --git a/libAACenc/src/aacenc.h b/libAACenc/src/aacenc.h
index 61520de..79524b5 100644
--- a/libAACenc/src/aacenc.h
+++ b/libAACenc/src/aacenc.h
@@ -98,6 +98,11 @@
#include "sbr_encoder.h"
+#define BITRES_MAX_LD 4000
+#define BITRES_MIN_LD 500
+#define BITRATE_MAX_LD 70000 /* Max assumed bitrate for bitres calculation */
+#define BITRATE_MIN_LD 12000 /* Min assumed bitrate for bitres calculation */
+
#ifdef __cplusplus
extern "C" {
#endif
diff --git a/libAACenc/src/aacenc_lib.cpp b/libAACenc/src/aacenc_lib.cpp
index 9a3b214..2845177 100644
--- a/libAACenc/src/aacenc_lib.cpp
+++ b/libAACenc/src/aacenc_lib.cpp
@@ -98,7 +98,7 @@
/* Encoder library info */
#define AACENCODER_LIB_VL0 3
#define AACENCODER_LIB_VL1 4
-#define AACENCODER_LIB_VL2 19
+#define AACENCODER_LIB_VL2 22
#define AACENCODER_LIB_TITLE "AAC Encoder"
#ifdef __ANDROID__
#define AACENCODER_LIB_BUILD_DATE ""
@@ -813,11 +813,16 @@
switch ( hAacConfig->audioObjectType ) {
case AOT_ER_AAC_LD:
case AOT_ER_AAC_ELD:
- if (config->userBitrateMode==8) {
- hAacConfig->bitrateMode = 0;
- }
if (config->userBitrateMode==0) {
- hAacConfig->bitreservoir = 100*config->nChannels; /* default, reduced bitreservoir */
+ /* bitreservoir = (maxBitRes-minBitRes)/(maxBitRate-minBitrate)*(bitRate-minBitrate)+minBitRes; */
+ if ( isLowDelay(hAacConfig->audioObjectType) ) {
+ INT bitreservoir;
+ INT brPerChannel = hAacConfig->bitRate/hAacConfig->nChannels;
+ brPerChannel = fMin(BITRATE_MAX_LD, fMax(BITRATE_MIN_LD, brPerChannel));
+ FIXP_DBL slope = fDivNorm((brPerChannel-BITRATE_MIN_LD), BITRATE_MAX_LD-BITRATE_MIN_LD); /* calc slope for interpolation */
+ bitreservoir = fMultI(slope, (INT)(BITRES_MAX_LD-BITRES_MIN_LD)) + BITRES_MIN_LD; /* interpolate */
+ hAacConfig->bitreservoir = bitreservoir & ~7; /* align to bytes */
+ }
}
if (hAacConfig->bitrateMode!=0) {
return AACENC_INVALID_CONFIG;
diff --git a/libAACenc/src/aacenc_tns.cpp b/libAACenc/src/aacenc_tns.cpp
index 85aea65..9a07e8f 100644
--- a/libAACenc/src/aacenc_tns.cpp
+++ b/libAACenc/src/aacenc_tns.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -95,13 +95,7 @@
#include "aacEnc_rom.h"
#include "aacenc_tns.h"
-enum {
- HIFILT = 0, /* index of higher filter */
- LOFILT = 1 /* index of lower filter */
-};
-
-
-#define FILTER_DIRECTION 0
+#define FILTER_DIRECTION 0 /* 0 = up, 1 = down */
static const FIXP_DBL acfWindowLong[12+3+1] = {
0x7fffffff,0x7fb80000,0x7ee00000,0x7d780000,0x7b800000,0x78f80000,0x75e00000,0x72380000,
@@ -112,20 +106,6 @@
0x7fffffff,0x7e000000,0x78000000,0x6e000000,0x60000000,0x4e000000,0x38000000,0x1e000000
};
-
-typedef struct {
- INT filterEnabled[MAX_NUM_OF_FILTERS];
- INT threshOn[MAX_NUM_OF_FILTERS]; /* min. prediction gain for using tns TABUL*/
- INT filterStartFreq[MAX_NUM_OF_FILTERS]; /* lowest freq for lpc TABUL*/
- INT tnsLimitOrder[MAX_NUM_OF_FILTERS]; /* Limit for TNS order TABUL*/
- INT tnsFilterDirection[MAX_NUM_OF_FILTERS]; /* Filtering direction, 0=up, 1=down TABUL */
- INT acfSplit[MAX_NUM_OF_FILTERS];
- FIXP_DBL tnsTimeResolution[MAX_NUM_OF_FILTERS]; /* TNS max. time resolution TABUL. Should be fract but MSVC won't compile then */
- INT seperateFiltersAllowed;
-
-} TNS_PARAMETER_TABULATED;
-
-
typedef struct{
INT bitRateFrom[2]; /* noneSbr=0, useSbr=1 */
INT bitRateTo[2]; /* noneSbr=0, useSbr=1 */
@@ -373,6 +353,7 @@
INT channels,
INT blockType,
INT granuleLength,
+ INT isLowDelay,
INT ldSbrPresent,
TNS_CONFIG *tC,
PSY_CONFIGURATION *pC,
@@ -385,6 +366,8 @@
if (channels <= 0)
return (AAC_ENCODER_ERROR)1;
+ tC->isLowDelay = isLowDelay;
+
/* initialize TNS filter flag, order, and coefficient resolution (in bits per coeff) */
tC->tnsActive = (active) ? TRUE : FALSE;
tC->maxOrder = (blockType == SHORT_WINDOW) ? 5 : 12; /* maximum: 7, 20 */
@@ -450,27 +433,14 @@
const TNS_PARAMETER_TABULATED* pCfg = FDKaacEnc_GetTnsParam(bitRate, channels, ldSbrPresent);
if ( pCfg != NULL ) {
+
+ FDKmemcpy(&(tC->confTab), pCfg, sizeof(tC->confTab));
+
tC->lpcStartBand[HIFILT] = FDKaacEnc_FreqToBandWithRounding(pCfg->filterStartFreq[HIFILT], sampleRate, pC->sfbCnt, pC->sfbOffset);
tC->lpcStartLine[HIFILT] = pC->sfbOffset[tC->lpcStartBand[HIFILT]];
tC->lpcStartBand[LOFILT] = FDKaacEnc_FreqToBandWithRounding(pCfg->filterStartFreq[LOFILT], sampleRate, pC->sfbCnt, pC->sfbOffset);
tC->lpcStartLine[LOFILT] = pC->sfbOffset[tC->lpcStartBand[LOFILT]];
- tC->confTab.threshOn[HIFILT] = pCfg->threshOn[HIFILT];
- tC->confTab.threshOn[LOFILT] = pCfg->threshOn[LOFILT];
-
- tC->confTab.tnsLimitOrder[HIFILT] = pCfg->tnsLimitOrder[HIFILT];
- tC->confTab.tnsLimitOrder[LOFILT] = pCfg->tnsLimitOrder[LOFILT];
-
- tC->confTab.tnsFilterDirection[HIFILT] = pCfg->tnsFilterDirection[HIFILT];
- tC->confTab.tnsFilterDirection[LOFILT] = pCfg->tnsFilterDirection[LOFILT];
-
- tC->confTab.acfSplit[HIFILT] = pCfg->acfSplit[HIFILT];
- tC->confTab.acfSplit[LOFILT] = pCfg->acfSplit[LOFILT];
-
- tC->confTab.filterEnabled[HIFILT] = pCfg->filterEnabled[HIFILT];
- tC->confTab.filterEnabled[LOFILT] = pCfg->filterEnabled[LOFILT];
- tC->confTab.seperateFiltersAllowed = pCfg->seperateFiltersAllowed;
-
FDKaacEnc_CalcGaussWindow(tC->acfWindow[HIFILT], tC->maxOrder+1, sampleRate, granuleLength, pCfg->tnsTimeResolution[HIFILT], TNS_TIMERES_SCALE);
FDKaacEnc_CalcGaussWindow(tC->acfWindow[LOFILT], tC->maxOrder+1, sampleRate, granuleLength, pCfg->tnsTimeResolution[LOFILT], TNS_TIMERES_SCALE);
}
@@ -614,6 +584,7 @@
static void FDKaacEnc_MergedAutoCorrelation(
const FIXP_DBL *spectrum,
+ const INT isLowDelay,
const FIXP_DBL acfWindow[MAX_NUM_OF_FILTERS][TNS_MAX_ORDER+3+1],
const INT lpcStartLine[MAX_NUM_OF_FILTERS],
const INT lpcStopLine,
@@ -633,6 +604,8 @@
FDKmemclear(&_rxx1[0], sizeof(FIXP_DBL)*(maxOrder+1));
FDKmemclear(&_rxx2[0], sizeof(FIXP_DBL)*(maxOrder+1));
+ idx0 = idx1 = idx2 = idx3 = idx4 = 0;
+
/* MDCT line indices separating the 1st, 2nd, 3rd, and 4th analysis quarters */
if ( (acfSplit[LOFILT]==-1) || (acfSplit[HIFILT]==-1) ) {
/* autocorrelation function for 1st, 2nd, 3rd, and 4th quarter of the spectrum */
@@ -676,17 +649,27 @@
/* compute energy normalization factors, i. e. 1/energy (saves some divisions) */
if (rxx1_0 != FL2FXCONST_DBL(0.f))
{
- INT sc_fac1 = -1;
- FIXP_DBL fac1 = FDKaacEnc_AutoCorrNormFac(rxx1_0, ((-2*sc1)+nsc1), &sc_fac1);
- _rxx1[0] = scaleValue(fMult(rxx1_0,fac1),sc_fac1);
+ INT sc_fac1 = -1;
+ FIXP_DBL fac1 = FDKaacEnc_AutoCorrNormFac(rxx1_0, ((-2*sc1)+nsc1), &sc_fac1);
+ _rxx1[0] = scaleValue(fMult(rxx1_0,fac1),sc_fac1);
+ if (isLowDelay)
+ {
for (lag = 1; lag <= maxOrder; lag++) {
/* compute energy-normalized and windowed autocorrelation values at this lag */
+ FIXP_DBL x1 = FDKaacEnc_CalcAutoCorrValue(pSpectrum, idx0, idx1, lag, nsc1);
+ _rxx1[lag] = fMult(scaleValue(fMult(x1,fac1),sc_fac1), acfWindow[LOFILT][lag]);
+ }
+ }
+ else
+ {
+ for (lag = 1; lag <= maxOrder; lag++) {
if ((3 * lag) <= maxOrder + 3) {
FIXP_DBL x1 = FDKaacEnc_CalcAutoCorrValue(pSpectrum, idx0, idx1, lag, nsc1);
_rxx1[lag] = fMult(scaleValue(fMult(x1,fac1),sc_fac1), acfWindow[LOFILT][3*lag]);
}
}
+ }
}
/* auto corr over upper 3/4 of spectrum */
@@ -762,8 +745,12 @@
: &tnsData->dataRaw.Long.subBlockInfo;
tnsData->filtersMerged = FALSE;
- tsbi->tnsActive = FALSE;
- tsbi->predictionGain = 1000;
+
+ tsbi->tnsActive[HIFILT] = FALSE;
+ tsbi->predictionGain[HIFILT] = 1000;
+ tsbi->tnsActive[LOFILT] = FALSE;
+ tsbi->predictionGain[LOFILT] = 1000;
+
tnsInfo->numOfFilters[subBlockNumber] = 0;
tnsInfo->coefRes[subBlockNumber] = tC->coefRes;
for (i = 0; i < tC->maxOrder; i++) {
@@ -779,6 +766,7 @@
FDKaacEnc_MergedAutoCorrelation(
spectrum,
+ tC->isLowDelay,
tC->acfWindow,
tC->lpcStartLine,
tC->lpcStopLine,
@@ -788,7 +776,7 @@
rxx2);
/* compute higher TNS filter in lattice (ParCor) form with LeRoux-Gueguen algorithm */
- tsbi->predictionGain = FDKaacEnc_AutoToParcor(rxx2, parcor_tmp, tC->confTab.tnsLimitOrder[HIFILT]);
+ tsbi->predictionGain[HIFILT] = FDKaacEnc_AutoToParcor(rxx2, parcor_tmp, tC->confTab.tnsLimitOrder[HIFILT]);
/* non-linear quantization of TNS lattice coefficients with given resolution */
FDKaacEnc_Parcor2Index(
@@ -815,9 +803,9 @@
tnsInfo->length[subBlockNumber][HIFILT] = sfbCnt - tC->lpcStartBand[HIFILT];
/* disable TNS if predictionGain is less than 3dB or sumSqrCoef is too small */
- if ((tsbi->predictionGain > tC->confTab.threshOn[HIFILT]) || (sumSqrCoef > (tC->confTab.tnsLimitOrder[HIFILT]/2 + 2)))
+ if ((tsbi->predictionGain[HIFILT] > tC->confTab.threshOn[HIFILT]) || (sumSqrCoef > (tC->confTab.tnsLimitOrder[HIFILT]/2 + 2)))
{
- tsbi->tnsActive = TRUE;
+ tsbi->tnsActive[HIFILT] = TRUE;
tnsInfo->numOfFilters[subBlockNumber]++;
/* compute second filter for lower quarter; only allowed for long windows! */
@@ -857,6 +845,7 @@
|| ( (sumSqrCoef > 9) && (sumSqrCoef < 22 * tC->confTab.tnsLimitOrder[LOFILT]) ) )
{
/* compare lower to upper filter; if they are very similar, merge them */
+ tsbi->tnsActive[LOFILT] = TRUE;
sumSqrCoef = 0;
for (i = 0; i < tC->confTab.tnsLimitOrder[LOFILT]; i++) {
sumSqrCoef += FDKabs(tnsInfo->coef[subBlockNumber][HIFILT][i] - tnsInfo->coef[subBlockNumber][LOFILT][i]);
@@ -884,6 +873,8 @@
tnsInfo->numOfFilters[subBlockNumber]++;
}
} /* filter lower part */
+ tsbi->predictionGain[LOFILT]=predGain;
+
} /* second filter allowed */
} /* if predictionGain > 1437 ... */
} /* maxOrder > 0 && tnsActive */
@@ -944,7 +935,7 @@
INT doSync = 1, absDiffSum = 0;
/* if TNS is active in at least one channel, check if ParCor coefficients of higher filter are similar */
- if (pSbInfoDestW->tnsActive || pSbInfoSrcW->tnsActive) {
+ if (pSbInfoDestW->tnsActive[HIFILT] || pSbInfoSrcW->tnsActive[HIFILT]) {
for (i = 0; i < tC->maxOrder; i++) {
absDiff = FDKabs(tnsInfoDest->coef[w][HIFILT][i] - tnsInfoSrc->coef[w][HIFILT][i]);
absDiffSum += absDiff;
@@ -957,12 +948,12 @@
if (doSync) {
/* if no significant difference was detected, synchronize coefficient sets */
- if (pSbInfoSrcW->tnsActive) {
+ if (pSbInfoSrcW->tnsActive[HIFILT]) {
/* no dest filter, or more dest than source filters: use one dest filter */
- if ((!pSbInfoDestW->tnsActive) ||
- ((pSbInfoDestW->tnsActive) && (tnsInfoDest->numOfFilters[w] > tnsInfoSrc->numOfFilters[w])))
+ if ((!pSbInfoDestW->tnsActive[HIFILT]) ||
+ ((pSbInfoDestW->tnsActive[HIFILT]) && (tnsInfoDest->numOfFilters[w] > tnsInfoSrc->numOfFilters[w])))
{
- pSbInfoDestW->tnsActive = tnsInfoDest->numOfFilters[w] = 1;
+ pSbInfoDestW->tnsActive[HIFILT] = tnsInfoDest->numOfFilters[w] = 1;
}
tnsDataDest->filtersMerged = tnsDataSrc->filtersMerged;
tnsInfoDest->order [w][HIFILT] = tnsInfoSrc->order [w][HIFILT];
@@ -975,7 +966,7 @@
}
}
else
- pSbInfoDestW->tnsActive = tnsInfoDest->numOfFilters[w] = 0;
+ pSbInfoDestW->tnsActive[HIFILT] = tnsInfoDest->numOfFilters[w] = 0;
}
}
@@ -1012,8 +1003,8 @@
{
INT i, startLine, stopLine;
- if ( ( (blockType == SHORT_WINDOW) && (!tnsData->dataRaw.Short.subBlockInfo[subBlockNumber].tnsActive) )
- || ( (blockType != SHORT_WINDOW) && (!tnsData->dataRaw.Long.subBlockInfo.tnsActive) ) )
+ if ( ( (blockType == SHORT_WINDOW) && (!tnsData->dataRaw.Short.subBlockInfo[subBlockNumber].tnsActive[HIFILT]) )
+ || ( (blockType != SHORT_WINDOW) && (!tnsData->dataRaw.Long.subBlockInfo.tnsActive[HIFILT]) ) )
{
return 1;
}
@@ -1129,8 +1120,9 @@
FIXP_DBL *RESTRICT workBuffer = parcorWorkBuffer;
const FIXP_DBL autoCorr_0 = input[0];
+ FDKmemclear(reflCoeff,numOfCoeff*sizeof(FIXP_DBL));
+
if((FIXP_DBL)input[0] == FL2FXCONST_DBL(0.0)) {
- FDKmemclear(reflCoeff,numOfCoeff*sizeof(FIXP_DBL));
return(predictionGain);
}
diff --git a/libAACenc/src/aacenc_tns.h b/libAACenc/src/aacenc_tns.h
index f2b731f..2824cbc 100644
--- a/libAACenc/src/aacenc_tns.h
+++ b/libAACenc/src/aacenc_tns.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -117,21 +117,25 @@
#define MAX_NUM_OF_FILTERS 2
+#define HIFILT 0 /* index of higher filter */
+#define LOFILT 1 /* index of lower filter */
-typedef struct{ /*stuff that is tabulated dependent on bitrate etc. */
- INT filterEnabled[MAX_NUM_OF_FILTERS];
- INT threshOn[MAX_NUM_OF_FILTERS]; /* min. prediction gain for using tns TABUL*/
- INT tnsLimitOrder[MAX_NUM_OF_FILTERS]; /* Limit for TNS order TABUL*/
- INT tnsFilterDirection[MAX_NUM_OF_FILTERS]; /* Filtering direction, 0=up, 1=down TABUL */
- INT acfSplit[MAX_NUM_OF_FILTERS];
- INT seperateFiltersAllowed;
-}TNS_CONFIG_TABULATED;
-
+typedef struct{ /* stuff that is tabulated dependent on bitrate etc. */
+ INT filterEnabled[MAX_NUM_OF_FILTERS];
+ INT threshOn[MAX_NUM_OF_FILTERS]; /* min. prediction gain for using tns TABUL*/
+ INT filterStartFreq[MAX_NUM_OF_FILTERS]; /* lowest freq for lpc TABUL*/
+ INT tnsLimitOrder[MAX_NUM_OF_FILTERS]; /* Limit for TNS order TABUL*/
+ INT tnsFilterDirection[MAX_NUM_OF_FILTERS]; /* Filtering direction, 0=up, 1=down TABUL */
+ INT acfSplit[MAX_NUM_OF_FILTERS];
+ FIXP_DBL tnsTimeResolution[MAX_NUM_OF_FILTERS]; /* TNS max. time resolution TABUL. Should be fract but MSVC won't compile then */
+ INT seperateFiltersAllowed;
+} TNS_PARAMETER_TABULATED;
typedef struct { /*assigned at InitTime*/
- TNS_CONFIG_TABULATED confTab;
+ TNS_PARAMETER_TABULATED confTab;
+ INT isLowDelay;
INT tnsActive;
INT maxOrder; /* max. order of tns filter */
INT coefRes;
@@ -148,8 +152,8 @@
typedef struct {
- INT tnsActive;
- INT predictionGain;
+ INT tnsActive[MAX_NUM_OF_FILTERS];
+ INT predictionGain[MAX_NUM_OF_FILTERS];
} TNS_SUBBLOCK_INFO;
typedef struct{ /*changed at runTime*/
diff --git a/libAACenc/src/adj_thr.cpp b/libAACenc/src/adj_thr.cpp
index c318843..a79a9ae 100644
--- a/libAACenc/src/adj_thr.cpp
+++ b/libAACenc/src/adj_thr.cpp
@@ -153,10 +153,10 @@
{ 24000, 0x23D70A3D, 0x029F16B1, 0x2199999A, 0x07DD4413, 0x23D70A3D, 0x029F16B1, 0x2199999A, 0x07DD4413},
{ 32000, 0x247AE148, 0x11B1D92B, 0x23851EB8, 0x01F75105, 0x247AE148, 0x110A137F, 0x23851EB8, 0x01F75105},
{ 48000, 0x2D1EB852, 0x6833C600, 0x247AE148, 0x014F8B59, 0x2CCCCCCD, 0x68DB8BAC, 0x247AE148, 0x01F75105},
- { 64000, 0x60000000, 0x00000000, 0x251EB852, 0x154C985F, 0x60000000, 0x00000000, 0x2570A3D7, 0x154C985F},
- { 96000, 0x60000000, 0x00000000, 0x39EB851F, 0x088509C0, 0x60000000, 0x00000000, 0x3A3D70A4, 0x088509C0},
- {128000, 0x60000000, 0x00000000, 0x423D70A4, 0x18A43BB4, 0x60000000, 0x00000000, 0x428F5C29, 0x181E03F7},
- {148000, 0x60000000, 0x00000000, 0x5147AE14, 0x00000000, 0x60000000, 0x00000000, 0x5147AE14, 0x00000000}
+ { 64000, 0x25c28f40, 0x00000000, 0x251EB852, 0x01480000, 0x25c28f40, 0x00000000, 0x2570A3D7, 0x01480000},
+ { 96000, 0x25c28f40, 0x00000000, 0x26000000, 0x01000000, 0x25c28f40, 0x00000000, 0x26000000, 0x01000000},
+ {128000, 0x25c28f40, 0x00000000, 0x270a3d80, 0x01000000, 0x25c28f40, 0x00000000, 0x270a3d80, 0x01000000},
+ {148000, 0x25c28f40, 0x00000000, 0x28000000, 0x00000000, 0x25c28f40, 0x00000000, 0x28000000, 0x00000000}
};
static const BIT_PE_SFAC S_Bits2PeTab22050[] = {
@@ -166,8 +166,8 @@
{ 48000, 0x23d70a3d, 0x014f8b59, 0x2199999a, 0x03eea20a, 0x23d70a3d, 0x14f8b59, 0x2199999a, 0x03eea20a},
{ 64000, 0x247ae148, 0x08d8ec96, 0x23851eb8, 0x00fba882, 0x247ae148, 0x88509c0, 0x23851eb8, 0x00fba882},
{ 96000, 0x2d1eb852, 0x3419e300, 0x247ae148, 0x00a7c5ac, 0x2ccccccd, 0x346dc5d6, 0x247ae148, 0x00fba882},
- {128000, 0x60000000, 0x00000000, 0x251eb852, 0x029f16b1, 0x60000000, 0x00000000, 0x2570a3d7, 0x009f16b1},
- {148000, 0x60000000, 0x00000000, 0x26b851ec, 0x00000000, 0x60000000, 0x00000000, 0x270a3d71, 0x00000000}
+ {128000, 0x25c28f40, 0x00000000, 0x251eb852, 0x029f16b1, 0x60000000, 0x25c28f40, 0x2570a3d7, 0x009f16b1},
+ {148000, 0x25c28f40, 0x00000000, 0x26b851ec, 0x00000000, 0x60000000, 0x25c28f40, 0x270a3d71, 0x00000000}
};
static const BIT_PE_SFAC S_Bits2PeTab24000[] = {
@@ -178,21 +178,21 @@
{ 64000, 0x24cccccd, 0x05e5f30e, 0x22e147ae, 0x01a36e2f, 0x24cccccd, 0x05e5f30e, 0x23333333, 0x014f8b59},
{ 96000, 0x2a8f5c29, 0x24b33db0, 0x247ae148, 0x00fba882, 0x2a8f5c29, 0x26fe718b, 0x247ae148, 0x00fba882},
{128000, 0x4e666666, 0x1cd5f99c, 0x2570a3d7, 0x010c6f7a, 0x50a3d70a, 0x192a7371, 0x2570a3d7, 0x010c6f7a},
- {148000, 0x60000000, 0x00000000, 0x26147ae1, 0x00000000, 0x60000000, 0x00000000, 0x26147ae1, 0x00000000}
+ {148000, 0x25c28f40, 0x00000000, 0x26147ae1, 0x00000000, 0x25c28f40, 0x00000000, 0x26147ae1, 0x00000000}
};
static const BIT_PE_SFAC S_Bits2PeTab32000[] = {
- { 16000, 0x1199999a, 0x20c49ba6, 0x00000000, 0x4577d955, 0x00000000, 0x60fe4799, 0x00000000, 0x00000000},
- { 24000, 0x1999999a, 0x0fba8827, 0x10f5c28f, 0x1b866e44, 0x17ae147b, 0x0fba8827, 0x00000000, 0x4d551d69},
+ { 16000, 0x247ae140, 0xFFFFAC1E, 0x270a3d80, 0xFFFE9B7C, 0x14ccccc0, 0x000110A1, 0x15c28f60, 0xFFFEEF5F},
+ { 24000, 0x23333340, 0x0fba8827, 0x21999980, 0x1b866e44, 0x18f5c280, 0x0fba8827, 0x119999a0, 0x4d551d69},
{ 32000, 0x1d70a3d7, 0x07357e67, 0x17ae147b, 0x09d49518, 0x1b851eb8, 0x0a7c5ac4, 0x12e147ae, 0x110a137f},
{ 48000, 0x20f5c28f, 0x049667b6, 0x1c7ae148, 0x053e2d62, 0x20a3d70a, 0x053e2d62, 0x1b333333, 0x05e5f30e},
{ 64000, 0x23333333, 0x029f16b1, 0x1f0a3d71, 0x02f2f987, 0x23333333, 0x029f16b1, 0x1e147ae1, 0x03eea20a},
{ 96000, 0x25c28f5c, 0x2c3c9eed, 0x21eb851f, 0x01f75105, 0x25c28f5c, 0x0a7c5ac4, 0x21eb851f, 0x01a36e2f},
{128000, 0x50f5c28f, 0x18a43bb4, 0x23d70a3d, 0x010c6f7a, 0x30000000, 0x168b5cc0, 0x23851eb8, 0x0192a737},
- {148000, 0x60000000, 0x00000000, 0x247ae148, 0x00dfb23b, 0x3dc28f5c, 0x300f4aaf, 0x247ae148, 0x01bf6476},
- {160000, 0x60000000, 0xb15b5740, 0x24cccccd, 0x053e2d62, 0x4f5c28f6, 0xbefd0072, 0x251eb852, 0x04fb1184},
- {200000, 0x00000000, 0x00000000, 0x2b333333, 0x0836be91, 0x00000000, 0x00000000, 0x2b333333, 0x0890390f},
- {320000, 0x00000000, 0x00000000, 0x4947ae14, 0x00000000, 0x00000000, 0x00000000, 0x4a8f5c29, 0x00000000}
+ {148000, 0x25c28f40, 0x00000000, 0x247ae148, 0x00dfb23b, 0x3dc28f5c, 0x300f4aaf, 0x247ae148, 0x01bf6476},
+ {160000, 0x25c28f40, 0xb15b5740, 0x24cccccd, 0x053e2d62, 0x4f5c28f6, 0xbefd0072, 0x251eb852, 0x04fb1184},
+ {200000, 0x25c28f40, 0x00000000, 0x2b333333, 0x0836be91, 0x25c28f40, 0x00000000, 0x2b333333, 0x0890390f},
+ {320000, 0x25c28f40, 0x00000000, 0x4947ae14, 0x00000000, 0x25c28f40, 0x00000000, 0x4a8f5c29, 0x00000000}
};
static const BIT_PE_SFAC S_Bits2PeTab44100[] = {
@@ -205,8 +205,8 @@
{128000, 0x2ae147ae, 0x1b435265, 0x223d70a4, 0x0192a737, 0x2a3d70a4, 0x1040bfe4, 0x21eb851f, 0x0192a737},
{148000, 0x3b851eb8, 0x2832069c, 0x23333333, 0x00dfb23b, 0x3428f5c3, 0x2054c288, 0x22e147ae, 0x00dfb23b},
{160000, 0x4a3d70a4, 0xc32ebe5a, 0x23851eb8, 0x01d5c316, 0x40000000, 0xcb923a2b, 0x23333333, 0x01d5c316},
- {200000, 0x00000000, 0x00000000, 0x25c28f5c, 0x0713f078, 0x00000000, 0x00000000, 0x2570a3d7, 0x072a4f17},
- {320000, 0x00000000, 0x00000000, 0x3fae147b, 0x00000000, 0x00000000, 0x00000000, 0x3fae147b, 0x00000000}
+ {200000, 0x25c28f40, 0x00000000, 0x25c28f5c, 0x0713f078, 0x25c28f40, 0x00000000, 0x2570a3d7, 0x072a4f17},
+ {320000, 0x25c28f40, 0x00000000, 0x3fae147b, 0x00000000, 0x25c28f40, 0x00000000, 0x3fae147b, 0x00000000}
};
static const BIT_PE_SFAC S_Bits2PeTab48000[] = {
@@ -219,8 +219,8 @@
{128000, 0x28f5c28f, 0x14727dcc, 0x2147ae14, 0x0218def4, 0x2851eb85, 0x0e27e0f0, 0x20f5c28f, 0x0218def4},
{148000, 0x3570a3d7, 0x1cd5f99c, 0x228f5c29, 0x01bf6476, 0x30f5c28f, 0x18777e75, 0x223d70a4, 0x01bf6476},
{160000, 0x40000000, 0xcb923a2b, 0x23333333, 0x0192a737, 0x39eb851f, 0xd08d4bae, 0x22e147ae, 0x0192a737},
- {200000, 0x00000000, 0x00000000, 0x251eb852, 0x06775a1b, 0x00000000, 0x00000000, 0x24cccccd, 0x06a4175a},
- {320000, 0x00000000, 0x00000000, 0x3ccccccd, 0x00000000, 0x00000000, 0x00000000, 0x3d1eb852, 0x00000000}
+ {200000, 0x25c28f40, 0x00000000, 0x251eb852, 0x06775a1b, 0x25c28f40, 0x00000000, 0x24cccccd, 0x06a4175a},
+ {320000, 0x25c28f40, 0x00000000, 0x3ccccccd, 0x00000000, 0x25c28f40, 0x00000000, 0x3d1eb852, 0x00000000}
};
static const BITS2PE_CFG_TAB bits2PeConfigTab[] = {
@@ -258,6 +258,7 @@
const INT nChannels,
const INT sampleRate,
const INT advancedBitsToPe,
+ const INT dZoneQuantEnable,
const INT invQuant
)
{
@@ -329,7 +330,32 @@
} /* advancedBitsToPe */
- /* return bits2pe factor */
+ if (dZoneQuantEnable)
+ {
+ if(bit2PE_m >= (FL2FXCONST_DBL(0.6f))>>bit2PE_e)
+ {
+ /* Additional headroom for addition */
+ bit2PE_m >>= 1;
+ bit2PE_e += 1;
+ }
+
+ /* the quantTendencyCompensator compensates a lower bit consumption due to increasing the tendency to quantize low spectral values to the lower quantizer border for bitrates below a certain bitrate threshold --> see also function calcSfbDistLD in quantize.c */
+ if ((bitRate/nChannels > 32000) && (bitRate/nChannels <= 40000)) {
+ bit2PE_m += (FL2FXCONST_DBL(0.4f))>>bit2PE_e;
+ }
+ else if (bitRate/nChannels > 20000) {
+ bit2PE_m += (FL2FXCONST_DBL(0.3f))>>bit2PE_e;
+ }
+ else if (bitRate/nChannels >= 16000) {
+ bit2PE_m += (FL2FXCONST_DBL(0.3f))>>bit2PE_e;
+ }
+ else {
+ bit2PE_m += (FL2FXCONST_DBL(0.0f))>>bit2PE_e;
+ }
+ }
+
+
+ /***** 3.) Return bits2pe factor *****/
*bits2PeFactor_m = bit2PE_m;
*bits2PeFactor_e = bit2PE_e;
}
@@ -1649,6 +1675,7 @@
QC_OUT_ELEMENT* qcElement[(8)],
PSY_OUT_ELEMENT* psyOutElement[(8)],
const INT desiredPe,
+ const INT maxIter2ndGuess,
const INT processElements,
const INT elementOffset)
{
@@ -1733,7 +1760,7 @@
/* Part III: Iterate until bit constraints are met */
/* -------------------------------------------------- */
iter = 0;
- while ((fixp_abs(redPeGlobal - desiredPe) > fMultI(FL2FXCONST_DBL(0.05f),desiredPe)) && (iter < 1)) {
+ while ((fixp_abs(redPeGlobal - desiredPe) > fMultI(FL2FXCONST_DBL(0.05f),desiredPe)) && (iter < maxIter2ndGuess)) {
INT desiredPeNoAHGlobal;
INT redPeNoAHGlobal = 0;
@@ -2225,7 +2252,8 @@
INT nChannelsEff,
INT sampleRate,
INT advancedBitsToPe,
- FIXP_DBL vbrQualFactor
+ FIXP_DBL vbrQualFactor,
+ const INT dZoneQuantEnable
)
{
INT i;
@@ -2233,6 +2261,10 @@
FIXP_DBL POINT8 = FL2FXCONST_DBL(0.8f);
FIXP_DBL POINT6 = FL2FXCONST_DBL(0.6f);
+ /* Max number of iterations in second guess is 3 for lowdelay aot and for configurations with
+ multiple audio elements in general, otherwise iteration value is always 1. */
+ hAdjThr->maxIter2ndGuess = (advancedBitsToPe!=0 || nElements>1) ? 3 : 1;
+
/* common for all elements: */
/* parameters for bitres control */
hAdjThr->bresParamLong.clipSaveLow = (FIXP_DBL)0x1999999a; /* FL2FXCONST_DBL(0.2f); */
@@ -2313,10 +2345,11 @@
FDKaacEnc_InitBits2PeFactor(
&atsElem->bits2PeFactor_m,
&atsElem->bits2PeFactor_e,
- chBitrate, /* bitrate/channel*/
+ chBitrate*nChannelsEff, /* overall bitrate */
nChannelsEff, /* number of channels */
sampleRate,
advancedBitsToPe,
+ dZoneQuantEnable,
invQuant
);
@@ -2545,6 +2578,7 @@
QC_OUT* qcOut,
PSY_OUT_ELEMENT* psyOutElement[(8)],
INT CBRbitrateMode,
+ INT maxIter2ndGuess,
CHANNEL_MAPPING* cm)
{
int i;
@@ -2570,6 +2604,7 @@
qcElement,
psyOutElement,
qcElement[i]->grantedPeCorr,
+ maxIter2ndGuess,
1, /* Process only 1 element */
i); /* Process exactly THIS element */
diff --git a/libAACenc/src/adj_thr.h b/libAACenc/src/adj_thr.h
index 69b1dcc..be68c6e 100644
--- a/libAACenc/src/adj_thr.h
+++ b/libAACenc/src/adj_thr.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -118,7 +118,8 @@
INT nChannelsEff,
INT sampleRate,
INT advancedBitsToPe,
- FIXP_DBL vbrQualFactor);
+ FIXP_DBL vbrQualFactor,
+ const INT dZoneQuantEnable);
void FDKaacEnc_DistributeBits(ADJ_THR_STATE *adjThrState,
@@ -140,6 +141,7 @@
QC_OUT* qcOut,
PSY_OUT_ELEMENT* psyOutElement[(8)],
INT CBRbitrateMode,
+ INT maxIter2ndGuess,
CHANNEL_MAPPING* cm);
void FDKaacEnc_AdjThrClose(ADJ_THR_STATE** hAdjThr);
diff --git a/libAACenc/src/adj_thr_data.h b/libAACenc/src/adj_thr_data.h
index 3eb7678..7c3a191 100644
--- a/libAACenc/src/adj_thr_data.h
+++ b/libAACenc/src/adj_thr_data.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -145,6 +145,7 @@
typedef struct {
BRES_PARAM bresParamLong, bresParamShort;
ATS_ELEMENT* adjThrStateElem[(8)];
+ INT maxIter2ndGuess;
} ADJ_THR_STATE;
#endif
diff --git a/libAACenc/src/bandwidth.cpp b/libAACenc/src/bandwidth.cpp
index 6fc7d87..6937362 100644
--- a/libAACenc/src/bandwidth.cpp
+++ b/libAACenc/src/bandwidth.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -127,7 +127,7 @@
{ 8000, 2000, 2000},
{12000, 2000, 2300},
{16000, 2200, 2500},
- {24000, 5650, 6400},
+ {24000, 5650, 7200},
{32000, 11600, 12000},
{40000, 12000, 16000},
{48000, 16000, 16000},
@@ -138,10 +138,10 @@
static const BANDWIDTH_TAB bandWidthTable_LD_32000[] = {
{ 8000, 2000, 2000},
{12000, 2000, 2000},
- {24000, 4250, 5200},
+ {24000, 4250, 7200},
{32000, 8400, 9000},
{40000, 9400, 11300},
- {48000, 11900, 13700},
+ {48000, 11900, 14700},
{64000, 14800, 16000},
{76000, 16000, 16000},
{360001, 16000, 16000}
diff --git a/libAACenc/src/pnsparam.cpp b/libAACenc/src/pnsparam.cpp
index afc5bdd..9d59ddc 100644
--- a/libAACenc/src/pnsparam.cpp
+++ b/libAACenc/src/pnsparam.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -107,6 +107,7 @@
typedef struct {
ULONG brFrom;
ULONG brTo;
+ UCHAR S16000;
UCHAR S22050;
UCHAR S24000;
UCHAR S32000;
@@ -115,25 +116,26 @@
} 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,},
+ {0, 11999, 0, 1, 1, 1, 1, 1,},
+ {12000, 19999, 0, 1, 1, 1, 1, 1,},
+ {20000, 28999, 0, 2, 1, 1, 1, 1,},
+ {29000, 40999, 0, 4, 4, 4, 2, 2,},
+ {41000, 55999, 0, 9, 9, 7, 7, 7,},
+ {56000, 61999, 0, 0, 0, 0, 9, 9,},
+ {62000, 75999, 0, 0, 0, 0, 0, 0,},
+ {76000, 92999, 0, 0, 0, 0, 0, 0,},
+ {93000, 999999, 0, 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,},
+ {0, 11999, 0, 1, 1, 1, 1, 1,},
+ {12000, 19999, 0, 3, 1, 1, 1, 1,},
+ {20000, 28999, 0, 3, 3, 3, 2, 2,},
+ {29000, 40999, 0, 7, 6, 6, 5, 5,},
+ {41000, 55999, 0, 9, 9, 7, 7, 7,},
+ {56000, 79999, 0, 0, 0, 0, 0, 0,},
+ {80000, 99999, 0, 0, 0, 0, 0, 0,},
+ {100000,999999, 0, 0, 0, 0, 0, 0,},
};
@@ -160,11 +162,11 @@
};
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,},
+ {0, 27999, 0, 0, 0, 0, 0, 0,},
+ {28000, 31999, 0, 2, 2, 2, 2, 2,},
+ {32000, 47999, 0, 3, 3, 3, 3, 3,},
+ {48000, 48000, 0, 4, 4, 4, 4, 4,},
+ {48001, 999999, 0, 0, 0, 0, 0, 0,},
};
/* conversion of old LC tuning tables to new (LD enc) structure (only entries which are actually used were converted) */
@@ -211,6 +213,7 @@
}
switch (sampleRate) {
+ case 16000: hUsePns = levelTable[i].S16000; break;
case 22050: hUsePns = levelTable[i].S22050; break;
case 24000: hUsePns = levelTable[i].S24000; break;
case 32000: hUsePns = levelTable[i].S32000; break;
diff --git a/libAACenc/src/psy_main.cpp b/libAACenc/src/psy_main.cpp
index 3cc9438..446c894 100644
--- a/libAACenc/src/psy_main.cpp
+++ b/libAACenc/src/psy_main.cpp
@@ -342,6 +342,7 @@
tnsChannels,
LONG_WINDOW,
hPsy->granuleLength,
+ isLowDelay(audioObjectType),
(syntaxFlags&AC_SBR_PRESENT)?1:0,
&(hPsy->psyConf[0].tnsConf),
&hPsy->psyConf[0],
@@ -362,6 +363,7 @@
tnsChannels,
SHORT_WINDOW,
hPsy->granuleLength,
+ isLowDelay(audioObjectType),
(syntaxFlags&AC_SBR_PRESENT)?1:0,
&hPsy->psyConf[1].tnsConf,
&hPsy->psyConf[1],
@@ -763,7 +765,8 @@
/* Advance psychoacoustics: Tonality and TNS */
if (psyStatic[0]->isLFE) {
- tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive = 0;
+ tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT] = 0;
+ tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[LOFILT] = 0;
}
else
{
@@ -819,11 +822,15 @@
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);
+ tnsActive[w] = tnsData[0]->dataRaw.Short.subBlockInfo[w].tnsActive[HIFILT] ||
+ tnsData[0]->dataRaw.Short.subBlockInfo[w].tnsActive[LOFILT] ||
+ tnsData[channels-1]->dataRaw.Short.subBlockInfo[w].tnsActive[HIFILT] ||
+ tnsData[channels-1]->dataRaw.Short.subBlockInfo[w].tnsActive[LOFILT];
else
- tnsActive[w] = tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive ||
- ((channels == 2) ? tnsData[1]->dataRaw.Long.subBlockInfo.tnsActive : 0);
+ tnsActive[w] = tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT] ||
+ tnsData[0]->dataRaw.Long.subBlockInfo.tnsActive[LOFILT] ||
+ tnsData[channels-1]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT] ||
+ tnsData[channels-1]->dataRaw.Long.subBlockInfo.tnsActive[LOFILT];
}
for(ch = 0; ch < channels; ch++) {
@@ -1150,8 +1157,8 @@
psyData[ch]->sfbMaxScaleSpec.Long,
sfbTonality[ch],
psyOutChannel[ch]->tnsInfo.order[0][0],
- tnsData[ch]->dataRaw.Long.subBlockInfo.predictionGain,
- tnsData[ch]->dataRaw.Long.subBlockInfo.tnsActive,
+ tnsData[ch]->dataRaw.Long.subBlockInfo.predictionGain[HIFILT],
+ tnsData[ch]->dataRaw.Long.subBlockInfo.tnsActive[HIFILT],
psyOutChannel[ch]->sfbEnergyLdData,
psyOutChannel[ch]->noiseNrg );
} /* !isLFE */
diff --git a/libAACenc/src/qc_data.h b/libAACenc/src/qc_data.h
index a9309c8..00d6090 100644
--- a/libAACenc/src/qc_data.h
+++ b/libAACenc/src/qc_data.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -269,6 +269,8 @@
BITCNTR_STATE *hBitCounter;
ADJ_THR_STATE *hAdjThr;
+ INT dZoneQuantEnable; /* enable dead zone quantizer */
+
} QC_STATE;
#endif /* _QC_DATA_H */
diff --git a/libAACenc/src/qc_main.cpp b/libAACenc/src/qc_main.cpp
index 7503309..9cd73f6 100644
--- a/libAACenc/src/qc_main.cpp
+++ b/libAACenc/src/qc_main.cpp
@@ -380,7 +380,7 @@
if ( isConstantBitrateMode(hQC->bitrateMode) ) {
INT bitresPerChannel = (hQC->bitResTotMax / init->channelMapping->nChannelsEff);
/* 0: full bitreservoir, 1: reduced bitreservoir, 2: disabled bitreservoir */
- hQC->bitDistributionMode = (bitresPerChannel>100) ? 0 : (bitresPerChannel>0) ? 1 : 2;
+ hQC->bitDistributionMode = (bitresPerChannel>BITRES_MIN_LD) ? 0 : (bitresPerChannel>0) ? 1 : 2;
}
else {
hQC->bitDistributionMode = 0; /* full bitreservoir */
@@ -405,6 +405,16 @@
}
}
+ if (init->channelMapping->nChannelsEff == 1 &&
+ (init->bitrate / init->channelMapping->nChannelsEff) < 32000 &&
+ init->advancedBitsToPe != 0
+ )
+ {
+ hQC->dZoneQuantEnable = 1;
+ } else {
+ hQC->dZoneQuantEnable = 0;
+ }
+
FDKaacEnc_AdjThrInit(
hQC->hAdjThr,
init->meanPe,
@@ -414,7 +424,8 @@
init->channelMapping->nChannelsEff,
init->sampleRate, /* output sample rate */
init->advancedBitsToPe, /* if set, calc bits2PE factor depending on samplerate */
- hQC->vbrQualFactor
+ hQC->vbrQualFactor,
+ hQC->dZoneQuantEnable
);
return AAC_ENC_OK;
@@ -877,6 +888,7 @@
qcOut[c],
psyOut[c]->psyOutElement,
isConstantBitrateMode(hQC->bitrateMode),
+ hQC->hAdjThr->maxIter2ndGuess,
cm);
} /* -end- sub frame counter */
@@ -904,6 +916,7 @@
FDKaacEnc_EstimateScaleFactors(psyOut[c]->psyOutElement[i]->psyOutChannel,
qcElement[c][i]->qcOutChannel,
hQC->invQuant,
+ hQC->dZoneQuantEnable,
cm->elInfo[i].nChannelsInEl);
@@ -998,7 +1011,8 @@
qcOutCh->mdctSpectrum,
qcOutCh->globalGain,
qcOutCh->scf,
- qcOutCh->quantSpec) ;
+ qcOutCh->quantSpec,
+ hQC->dZoneQuantEnable);
/*-------------------------------------------- */
if (FDKaacEnc_calcMaxValueInSfb(psyOutCh->sfbCnt,
diff --git a/libAACenc/src/quantize.cpp b/libAACenc/src/quantize.cpp
index 5380e35..a74da0e 100644
--- a/libAACenc/src/quantize.cpp
+++ b/libAACenc/src/quantize.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -104,13 +104,19 @@
static void FDKaacEnc_quantizeLines(INT gain,
INT noOfLines,
FIXP_DBL *mdctSpectrum,
- SHORT *quaSpectrum)
+ SHORT *quaSpectrum,
+ INT dZoneQuantEnable)
{
int line;
- FIXP_DBL k = FL2FXCONST_DBL(-0.0946f + 0.5f)>>16;
+ FIXP_DBL k = FL2FXCONST_DBL(0.0f);
FIXP_QTD quantizer = FDKaacEnc_quantTableQ[(-gain)&3];
INT quantizershift = ((-gain)>>2)+1;
+ const INT kShift=16;
+ if (dZoneQuantEnable)
+ k = FL2FXCONST_DBL(0.23f)>>kShift;
+ else
+ k = FL2FXCONST_DBL(-0.0946f + 0.5f)>>kShift;
for (line = 0; line < noOfLines; line++)
{
@@ -263,7 +269,8 @@
FIXP_DBL *mdctSpectrum,
INT globalGain,
INT *scalefactors,
- SHORT *quantizedSpectrum)
+ SHORT *quantizedSpectrum,
+ INT dZoneQuantEnable)
{
INT sfbOffs,sfb;
@@ -280,7 +287,8 @@
FDKaacEnc_quantizeLines(globalGain - scalefactor, /* QSS */
sfbOffset[sfbOffs+sfb+1] - sfbOffset[sfbOffs+sfb],
mdctSpectrum + sfbOffset[sfbOffs+sfb],
- quantizedSpectrum + sfbOffset[sfbOffs+sfb]);
+ quantizedSpectrum + sfbOffset[sfbOffs+sfb],
+ dZoneQuantEnable);
}
}
@@ -296,7 +304,8 @@
FIXP_DBL FDKaacEnc_calcSfbDist(FIXP_DBL *mdctSpectrum,
SHORT *quantSpectrum,
INT noOfLines,
- INT gain
+ INT gain,
+ INT dZoneQuantEnable
)
{
INT i,scale;
@@ -311,7 +320,8 @@
FDKaacEnc_quantizeLines(gain,
1,
&mdctSpectrum[i],
- &quantSpectrum[i]);
+ &quantSpectrum[i],
+ dZoneQuantEnable);
if (fAbs(quantSpectrum[i])>MAX_QUANT) {
return FL2FXCONST_DBL(0.0f);
diff --git a/libAACenc/src/quantize.h b/libAACenc/src/quantize.h
index 975b98e..16d3d4e 100644
--- a/libAACenc/src/quantize.h
+++ b/libAACenc/src/quantize.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -102,12 +102,14 @@
INT sfbPerGroup,
INT *sfbOffset, FIXP_DBL *mdctSpectrum,
INT globalGain, INT *scalefactors,
- SHORT *quantizedSpectrum);
+ SHORT *quantizedSpectrum,
+ INT dZoneQuantEnable);
FIXP_DBL FDKaacEnc_calcSfbDist(FIXP_DBL *mdctSpectrum,
SHORT *quantSpectrum,
INT noOfLines,
- INT gain);
+ INT gain,
+ INT dZoneQuantEnable);
void FDKaacEnc_calcSfbQuantEnergyAndDist(FIXP_DBL *mdctSpectrum,
SHORT *quantSpectrum,
diff --git a/libAACenc/src/sf_estim.cpp b/libAACenc/src/sf_estim.cpp
index 72b75a6..1cb243b 100644
--- a/libAACenc/src/sf_estim.cpp
+++ b/libAACenc/src/sf_estim.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -363,7 +363,8 @@
INT scf,
INT minScf,
FIXP_DBL *distLdData,
- INT *minScfCalculated
+ INT *minScfCalculated,
+ INT dZoneQuantEnable
)
{
FIXP_DBL sfbDistLdData;
@@ -375,7 +376,8 @@
sfbDistLdData = FDKaacEnc_calcSfbDist(spec,
quantSpec,
sfbWidth,
- scf);
+ scf,
+ dZoneQuantEnable);
*minScfCalculated = scf;
/* nmr > 1.25 -> try to improve nmr */
if (sfbDistLdData > (threshLdData-distFactorLdData)) {
@@ -390,7 +392,8 @@
sfbDistLdData = FDKaacEnc_calcSfbDist(spec,
quantSpecTmp,
sfbWidth,
- scf);
+ scf,
+ dZoneQuantEnable);
if (sfbDistLdData < sfbDistBestLdData) {
scfBest = scf;
@@ -408,7 +411,8 @@
sfbDistLdData = FDKaacEnc_calcSfbDist(spec,
quantSpecTmp,
sfbWidth,
- scf);
+ scf,
+ dZoneQuantEnable);
if (sfbDistLdData < sfbDistBestLdData) {
scfBest = scf;
@@ -429,7 +433,8 @@
sfbDistLdData = FDKaacEnc_calcSfbDist(spec,
quantSpecTmp,
sfbWidth,
- scf);
+ scf,
+ dZoneQuantEnable);
if (sfbDistLdData < sfbDistAllowedLdData) {
*minScfCalculated = scfBest+1;
@@ -454,6 +459,7 @@
QC_OUT_CHANNEL *qcOutChannel,
SHORT *quantSpec,
SHORT *quantSpecTmp,
+ INT dZoneQuantEnable,
INT *scf,
INT *minScf,
FIXP_DBL *sfbDist,
@@ -570,7 +576,8 @@
sfbDistNew = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs,
quantSpecTmp+sfbOffs,
sfbWidth,
- scfAct);
+ scfAct,
+ dZoneQuantEnable);
if (sfbDistNew < sfbDist[sfbAct]) {
/* success, replace scf by new one */
@@ -629,6 +636,7 @@
QC_OUT_CHANNEL *qcOutChannel,
SHORT *quantSpec,
SHORT *quantSpecTmp,
+ INT dZoneQuantEnable,
INT *scf,
INT *minScf,
FIXP_DBL *sfbDist,
@@ -724,7 +732,8 @@
sfbDistNew[sfb] = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs,
quantSpecTmp+sfbOffs,
sfbWidth,
- scfAct);
+ scfAct,
+ dZoneQuantEnable);
if (sfbDistNew[sfb] >qcOutChannel->sfbThresholdLdData[sfb]) {
/* no improvement, skip further dist. calculations */
@@ -768,6 +777,7 @@
QC_OUT_CHANNEL *qcOutChannel,
SHORT *quantSpec,
SHORT *quantSpecTmp,
+ INT dZoneQuantEnable,
INT *scf,
INT *minScf,
FIXP_DBL *sfbDist,
@@ -883,7 +893,8 @@
sfbDistNew[sfb] = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs[sfb],
quantSpecTmp+sfbOffs[sfb],
sfbOffs[sfb+1]-sfbOffs[sfb],
- scfNew);
+ scfNew,
+ dZoneQuantEnable);
if (sfbDistNew[sfb] > sfbDistMax[sfb]) {
/* no improvement, skip further dist. calculations */
@@ -963,7 +974,8 @@
sfbDistNew[sfb] = FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+sfbOffs[sfb],
quantSpecTmp+sfbOffs[sfb],
sfbOffs[sfb+1]-sfbOffs[sfb],
- scfNew);
+ scfNew,
+ dZoneQuantEnable);
if (sfbDistNew[sfb] > qcOutChannel->sfbThresholdLdData[sfb]) {
/* no improvement, skip further dist. calculations */
@@ -1058,7 +1070,8 @@
INT *RESTRICT globalGain,
FIXP_DBL *RESTRICT sfbFormFactorLdData
,const INT invQuant,
- SHORT *RESTRICT quantSpec
+ SHORT *RESTRICT quantSpec,
+ const INT dZoneQuantEnable
)
{
INT i, j, sfb, sfbOffs;
@@ -1160,7 +1173,8 @@
quantSpecTmp+psyOutChannel->sfbOffsets[sfbOffs+sfb],
psyOutChannel->sfbOffsets[sfbOffs+sfb+1]-psyOutChannel->sfbOffsets[sfbOffs+sfb],
threshLdData, scfInt, minSfMaxQuant[sfbOffs+sfb],
- &sfbDistLdData[sfbOffs+sfb], &minScfCalculated[sfbOffs+sfb]
+ &sfbDistLdData[sfbOffs+sfb], &minScfCalculated[sfbOffs+sfb],
+ dZoneQuantEnable
);
}
scf[sfbOffs+sfb] = scfInt;
@@ -1187,20 +1201,32 @@
sfbNRelevantLines);
- FDKaacEnc_assimilateSingleScf(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp, scf,
+ FDKaacEnc_assimilateSingleScf(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp,
+ dZoneQuantEnable,
+ scf,
minSfMaxQuant, sfbDistLdData, sfbConstPePart,
sfbFormFactorLdData, sfbNRelevantLines, minScfCalculated, 1);
+ if(invQuant > 1) {
+ FDKaacEnc_assimilateMultipleScf(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp,
+ dZoneQuantEnable,
+ scf,
+ minSfMaxQuant, sfbDistLdData, sfbConstPePart,
+ sfbFormFactorLdData, sfbNRelevantLines);
- FDKaacEnc_assimilateMultipleScf(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp, scf,
- minSfMaxQuant, sfbDistLdData, sfbConstPePart,
- sfbFormFactorLdData, sfbNRelevantLines);
+ FDKaacEnc_assimilateMultipleScf(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp,
+ dZoneQuantEnable,
+ scf,
+ minSfMaxQuant, sfbDistLdData, sfbConstPePart,
+ sfbFormFactorLdData, sfbNRelevantLines);
- FDKaacEnc_FDKaacEnc_assimilateMultipleScf2(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp, scf,
- minSfMaxQuant, sfbDistLdData, sfbConstPePart,
- sfbFormFactorLdData, sfbNRelevantLines);
-
+ FDKaacEnc_FDKaacEnc_assimilateMultipleScf2(psyOutChannel, qcOutChannel, quantSpec, quantSpecTmp,
+ dZoneQuantEnable,
+ scf,
+ minSfMaxQuant, sfbDistLdData, sfbConstPePart,
+ sfbFormFactorLdData, sfbNRelevantLines);
+ }
}
@@ -1223,7 +1249,8 @@
FDKaacEnc_calcSfbDist(qcOutChannel->mdctSpectrum+psyOutChannel->sfbOffsets[sfbOffs+sfb],
quantSpec+psyOutChannel->sfbOffsets[sfbOffs+sfb],
psyOutChannel->sfbOffsets[sfbOffs+sfb+1]-psyOutChannel->sfbOffsets[sfbOffs+sfb],
- scf[sfbOffs+sfb]
+ scf[sfbOffs+sfb],
+ dZoneQuantEnable
);
}
}
@@ -1281,6 +1308,7 @@
FDKaacEnc_EstimateScaleFactors(PSY_OUT_CHANNEL *psyOutChannel[],
QC_OUT_CHANNEL* qcOutChannel[],
const int invQuant,
+ const INT dZoneQuantEnable,
const int nChannels)
{
int ch;
@@ -1293,7 +1321,8 @@
&qcOutChannel[ch]->globalGain,
qcOutChannel[ch]->sfbFormFactorLdData
,invQuant,
- qcOutChannel[ch]->quantSpec
+ qcOutChannel[ch]->quantSpec,
+ dZoneQuantEnable
);
}
diff --git a/libAACenc/src/sf_estim.h b/libAACenc/src/sf_estim.h
index b5ac000..ef8d366 100644
--- a/libAACenc/src/sf_estim.h
+++ b/libAACenc/src/sf_estim.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -110,6 +110,7 @@
FDKaacEnc_EstimateScaleFactors(PSY_OUT_CHANNEL *psyOutChannel[],
QC_OUT_CHANNEL* qcOutChannel[],
const int invQuant,
+ const INT dZoneQuantEnable,
const int nChannels);
diff --git a/libAACenc/src/tns_func.h b/libAACenc/src/tns_func.h
index 6ee0edb..5e5265d 100644
--- a/libAACenc/src/tns_func.h
+++ b/libAACenc/src/tns_func.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -100,6 +100,7 @@
INT channels,
INT blocktype,
INT granuleLength,
+ INT isLowDelay,
INT ldSbrPresent,
TNS_CONFIG *tnsConfig,
PSY_CONFIGURATION *psyConfig,
diff --git a/libFDK/include/fixpoint_math.h b/libFDK/include/fixpoint_math.h
index 88e2f09..0d50f0a 100644
--- a/libFDK/include/fixpoint_math.h
+++ b/libFDK/include/fixpoint_math.h
@@ -94,6 +94,35 @@
#include "common_fix.h"
+#if !defined(FUNCTION_fIsLessThan)
+/**
+ * \brief Compares two fixpoint values incl. scaling.
+ * \param a_m mantissa of the first input value.
+ * \param a_e exponent of the first input value.
+ * \param b_m mantissa of the second input value.
+ * \param b_e exponent of the second input value.
+ * \return non-zero if (a_m*2^a_e) < (b_m*2^b_e), 0 otherwise
+ */
+FDK_INLINE INT fIsLessThan(FIXP_DBL a_m, INT a_e, FIXP_DBL b_m, INT b_e)
+{
+ if (a_e > b_e) {
+ return (b_m >> fMin(a_e-b_e, DFRACT_BITS-1) > a_m);
+ } else {
+ return (a_m >> fMin(b_e-a_e, DFRACT_BITS-1) < b_m);
+ }
+}
+
+FDK_INLINE INT fIsLessThan(FIXP_SGL a_m, INT a_e, FIXP_SGL b_m, INT b_e)
+{
+ if (a_e > b_e) {
+ return (b_m >> fMin(a_e-b_e, FRACT_BITS-1) > a_m);
+ } else {
+ return (a_m >> fMin(b_e-a_e, FRACT_BITS-1) < b_m);
+ }
+}
+#endif
+
+
#define LD_DATA_SCALING (64.0f)
#define LD_DATA_SHIFT 6 /* pow(2, LD_DATA_SHIFT) = LD_DATA_SCALING */
diff --git a/libFDK/src/FDK_core.cpp b/libFDK/src/FDK_core.cpp
index 8fa5596..f4b510d 100644
--- a/libFDK/src/FDK_core.cpp
+++ b/libFDK/src/FDK_core.cpp
@@ -93,7 +93,7 @@
/* FDK tools library info */
#define FDK_TOOLS_LIB_VL0 2
#define FDK_TOOLS_LIB_VL1 3
-#define FDK_TOOLS_LIB_VL2 4
+#define FDK_TOOLS_LIB_VL2 5
#define FDK_TOOLS_LIB_TITLE "FDK Tools"
#ifdef __ANDROID__
#define FDK_TOOLS_LIB_BUILD_DATE ""
diff --git a/libSBRenc/include/sbr_encoder.h b/libSBRenc/include/sbr_encoder.h
index 93dc46d..aec0398 100644
--- a/libSBRenc/include/sbr_encoder.h
+++ b/libSBRenc/include/sbr_encoder.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -135,6 +135,12 @@
SBR_SYNTAX_DRM_CRC = 0x0008
};
+typedef enum
+{
+ FREQ_RES_LOW = 0,
+ FREQ_RES_HIGH
+} FREQ_RES;
+
typedef struct
{
CODEC_TYPE coreCoder; /*!< LC or ELD */
@@ -168,8 +174,9 @@
INT dynBwSupported; /*!< Flag: support for dynamic bandwidth in this combination. */
INT parametricCoding; /*!< Flag: usage of parametric coding tool. */
INT downSampleFactor; /*!< Sampling rate relation between the SBR and the core encoder. */
- int freq_res_fixfix[3]; /*!< Frequency resolution of envelopes in frame class FIXFIX
- 0=1 Env; 1=2 Env; 2=4 Env; */
+ FREQ_RES freq_res_fixfix[2];/*!< Frequency resolution of envelopes in frame class FIXFIX, for non-split case and split case */
+ UCHAR fResTransIsLow; /*!< Frequency resolution of envelopes in transient frames: low (0) or variable (1) */
+
/*
core coder dependent tuning parameters
*/
@@ -221,6 +228,8 @@
INT sbr_interpol_freq; /*!< Flag: use interpolation in freq. direction. */
INT sbr_smoothing_length; /*!< Flag: choose length 4 or 0 (=on, off). */
UCHAR init_amp_res_FF;
+ FIXP_DBL threshold_AmpRes_FF_m;
+ SCHAR threshold_AmpRes_FF_e;
} sbrConfiguration, *sbrConfigurationPtr ;
typedef struct SBR_CONFIG_DATA
@@ -237,7 +246,7 @@
INT noQmfBands; /**< Number of QMF frequency bands. */
INT noQmfSlots; /**< Number of QMF slots. */
- UCHAR *freqBandTable[2]; /**< Frequency table for low and hires, only MAX_FREQ_COEFFS/2 +1 coeefs actually needed for lowres. */
+ UCHAR *freqBandTable[2]; /**< Frequency table for low and hires, only MAX_FREQ_COEFFS/2 +1 coeffs actually needed for lowres. */
UCHAR *v_k_master; /**< Master BandTable where freqBandTable is derived from. */
@@ -249,6 +258,8 @@
INT xposCtrlSwitch; /**< Flag indicates whether to switch xpos ctrl on the fly. */
INT switchTransposers; /**< Flag indicates whether to switch xpos on the fly . */
UCHAR initAmpResFF;
+ FIXP_DBL thresholdAmpResFF_m;
+ SCHAR thresholdAmpResFF_e;
} SBR_CONFIG_DATA, *HANDLE_SBR_CONFIG_DATA;
typedef struct {
diff --git a/libSBRenc/src/bit_sbr.h b/libSBRenc/src/bit_sbr.h
index 1ce2c1e..de4ac89 100644
--- a/libSBRenc/src/bit_sbr.h
+++ b/libSBRenc/src/bit_sbr.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -141,8 +141,8 @@
{
INT sbr_xpos_ctrl;
- INT freq_res_fixfix;
-
+ FREQ_RES freq_res_fixfix[2];
+ UCHAR fResTransIsLow;
INVF_MODE sbr_invf_mode;
INVF_MODE sbr_invf_mode_vec[MAX_NUM_NOISE_VALUES];
@@ -205,6 +205,8 @@
INT balance;
AMP_RES init_sbr_amp_res;
AMP_RES currentAmpResFF;
+ FIXP_DBL ton_HF[SBR_GLOBAL_TONALITY_VALUES]; /* tonality is scaled by 2^19/0.524288f (fract part of RELAXATION) */
+ FIXP_DBL global_tonality;
/* extended data */
INT extended_data;
diff --git a/libSBRenc/src/env_est.cpp b/libSBRenc/src/env_est.cpp
index 929f229..4fcda51 100644
--- a/libSBRenc/src/env_est.cpp
+++ b/libSBRenc/src/env_est.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -103,6 +103,114 @@
static const UCHAR maxIndex[2] = {9, 5};
+/******************************************************************************
+ Functionname: FDKsbrEnc_GetTonality
+******************************************************************************/
+/***************************************************************************/
+/*!
+
+ \brief Calculates complete energy per band from the energy values
+ of the QMF subsamples.
+
+ \brief quotaMatrix - calculated in FDKsbrEnc_CalculateTonalityQuotas()
+ \brief noEstPerFrame - number of estimations per frame
+ \brief startIndex - start index for the quota matrix
+ \brief Energies - energy matrix
+ \brief startBand - start band
+ \brief stopBand - number of QMF bands
+ \brief numberCols - number of QMF subsamples
+
+ \return mean tonality of the 5 bands with the highest energy
+ scaled by 2^(RELAXATION_SHIFT+2)*RELAXATION_FRACT
+
+****************************************************************************/
+static FIXP_DBL FDKsbrEnc_GetTonality(
+ const FIXP_DBL *const *quotaMatrix,
+ const INT noEstPerFrame,
+ const INT startIndex,
+ const FIXP_DBL *const *Energies,
+ const UCHAR startBand,
+ const INT stopBand,
+ const INT numberCols
+ )
+{
+ UCHAR b, e, k;
+ INT no_enMaxBand[SBR_MAX_ENERGY_VALUES] = { -1, -1, -1, -1, -1 };
+ FIXP_DBL energyMax[SBR_MAX_ENERGY_VALUES] = { FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f) };
+ FIXP_DBL energyMaxMin = MAXVAL_DBL; /* min. energy in energyMax array */
+ UCHAR posEnergyMaxMin = 0; /* min. energy in energyMax array position */
+ FIXP_DBL tonalityBand[SBR_MAX_ENERGY_VALUES] = { FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f), FL2FXCONST_DBL(0.0f) };
+ FIXP_DBL globalTonality = FL2FXCONST_DBL(0.0f);
+ FIXP_DBL energyBand[QMF_CHANNELS];
+ INT maxNEnergyValues; /* max. number of max. energy values */
+
+ /*** Sum up energies for each band ***/
+ FDK_ASSERT(numberCols==15||numberCols==16);
+ /* numberCols is always 15 or 16 for ELD. In case of 16 bands, the
+ energyBands are initialized with the [15]th column.
+ The rest of the column energies are added in the next step. */
+ if (numberCols==15) {
+ for (b=startBand; b<stopBand; b++) {
+ energyBand[b]=FL2FXCONST_DBL(0.0f);
+ }
+ } else {
+ for (b=startBand; b<stopBand; b++) {
+ energyBand[b]=Energies[15][b]>>4;
+ }
+ }
+
+ for (k=0; k<15; k++) {
+ for (b=startBand; b<stopBand; b++) {
+ energyBand[b] += Energies[k][b]>>4;
+ }
+ }
+
+ /*** Determine 5 highest band-energies ***/
+ maxNEnergyValues = fMin(SBR_MAX_ENERGY_VALUES, stopBand-startBand);
+
+ /* Get min. value in energyMax array */
+ energyMaxMin = energyMax[0] = energyBand[startBand];
+ no_enMaxBand[0] = startBand;
+ posEnergyMaxMin = 0;
+ for (k=1; k<maxNEnergyValues; k++) {
+ energyMax[k] = energyBand[startBand+k];
+ no_enMaxBand[k] = startBand+k;
+ if (energyMaxMin > energyMax[k]) {
+ energyMaxMin = energyMax[k];
+ posEnergyMaxMin = k;
+ }
+ }
+
+ for (b=startBand+maxNEnergyValues; b<stopBand; b++) {
+ if (energyBand[b] > energyMaxMin) {
+ energyMax[posEnergyMaxMin] = energyBand[b];
+ no_enMaxBand[posEnergyMaxMin] = b;
+
+ /* Again, get min. value in energyMax array */
+ energyMaxMin = energyMax[0];
+ posEnergyMaxMin = 0;
+ for (k=1; k<maxNEnergyValues; k++) {
+ if (energyMaxMin > energyMax[k]) {
+ energyMaxMin = energyMax[k];
+ posEnergyMaxMin = k;
+ }
+ }
+ }
+ }
+ /*** End determine 5 highest band-energies ***/
+
+ /* Get tonality values for 5 highest energies */
+ for (e=0; e<maxNEnergyValues; e++) {
+ tonalityBand[e]=FL2FXCONST_DBL(0.0f);
+ for (k=0; k<noEstPerFrame; k++) {
+ tonalityBand[e] += quotaMatrix[startIndex + k][no_enMaxBand[e]] >> 1;
+ }
+ globalTonality += tonalityBand[e] >> 2; /* headroom of 2+1 (max. 5 additions) */
+ }
+
+ return globalTonality;
+}
+
/***************************************************************************/
/*!
@@ -919,10 +1027,42 @@
hEnvChan->qmfScale);
+ if(h_con->sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY) {
+ FIXP_DBL tonality = FDKsbrEnc_GetTonality (
+ hEnvChan->TonCorr.quotaMatrix,
+ hEnvChan->TonCorr.numberOfEstimatesPerFrame,
+ hEnvChan->TonCorr.startIndexMatrix,
+ sbrExtrEnv->YBuffer + sbrExtrEnv->YBufferWriteOffset,
+ h_con->freqBandTable[HI][0]+1,
+ h_con->noQmfBands,
+ sbrExtrEnv->no_cols
+ );
+
+ hEnvChan->encEnvData.ton_HF[1] = hEnvChan->encEnvData.ton_HF[0];
+ hEnvChan->encEnvData.ton_HF[0] = tonality;
+
+ /* tonality is scaled by 2^19/0.524288f (fract part of RELAXATION) */
+ hEnvChan->encEnvData.global_tonality = (hEnvChan->encEnvData.ton_HF[0]>>1) + (hEnvChan->encEnvData.ton_HF[1]>>1);
+ }
+
+
/*
Transient detection COEFF Transform OK
*/
+ if(h_con->sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY)
+ {
+ FDKsbrEnc_fastTransientDetect(
+ &hEnvChan->sbrFastTransientDetector,
+ sbrExtrEnv->YBuffer,
+ sbrExtrEnv->YBufferScale,
+ sbrExtrEnv->YBufferWriteOffset,
+ eData->transient_info
+ );
+
+ }
+ else
+ {
FDKsbrEnc_transientDetect(&hEnvChan->sbrTransientDetector,
sbrExtrEnv->YBuffer,
sbrExtrEnv->YBufferScale,
@@ -931,6 +1071,7 @@
sbrExtrEnv->YBufferSzShift,
sbrExtrEnv->time_step,
hEnvChan->SbrEnvFrame.frameMiddleSlot);
+ }
@@ -951,7 +1092,8 @@
sbrExtrEnv->YBufferSzShift,
h_con->nSfb[1],
sbrExtrEnv->time_step,
- sbrExtrEnv->no_cols);
+ sbrExtrEnv->no_cols,
+ &hEnvChan->encEnvData.global_tonality);
}
@@ -1128,12 +1270,26 @@
&& ( ed->nEnvelopes == 1 ) )
{
- if (hEnvChan->encEnvData.ldGrid)
- hEnvChan->encEnvData.currentAmpResFF = (AMP_RES)h_con->initAmpResFF;
- else
+ if (h_con->sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY)
+ {
+ /* Note: global_tonaliy_float_value == ((float)hEnvChan->encEnvData.global_tonality/((INT64)(1)<<(31-(19+2)))/0.524288*(2.0/3.0)));
+ threshold_float_value == ((float)h_con->thresholdAmpResFF_m/((INT64)(1)<<(31-(h_con->thresholdAmpResFF_e)))/0.524288*(2.0/3.0))); */
+ /* decision of SBR_AMP_RES */
+ if (fIsLessThan( /* global_tonality > threshold ? */
+ h_con->thresholdAmpResFF_m, h_con->thresholdAmpResFF_e,
+ hEnvChan->encEnvData.global_tonality, RELAXATION_SHIFT+2 )
+ )
+ {
+ hEnvChan->encEnvData.currentAmpResFF = SBR_AMP_RES_1_5;
+ }
+ else {
+ hEnvChan->encEnvData.currentAmpResFF = SBR_AMP_RES_3_0;
+ }
+ } else {
hEnvChan->encEnvData.currentAmpResFF = SBR_AMP_RES_1_5;
+ }
- if ( hEnvChan->encEnvData.currentAmpResFF != hEnvChan->encEnvData.init_sbr_amp_res) {
+ if ( hEnvChan->encEnvData.currentAmpResFF != hEnvChan->encEnvData.init_sbr_amp_res) {
FDKsbrEnc_InitSbrHuffmanTables(&hEnvChan->encEnvData,
&hEnvChan->sbrCodeEnvelope,
@@ -1172,7 +1328,12 @@
}
/* Low energy in low band fix */
- if ( hEnvChan->sbrTransientDetector.prevLowBandEnergy < hEnvChan->sbrTransientDetector.prevHighBandEnergy && hEnvChan->sbrTransientDetector.prevHighBandEnergy > FL2FX_DBL(0.03))
+ if ( hEnvChan->sbrTransientDetector.prevLowBandEnergy < hEnvChan->sbrTransientDetector.prevHighBandEnergy
+ && hEnvChan->sbrTransientDetector.prevHighBandEnergy > FL2FX_DBL(0.03)
+ /* The fix needs the non-fast transient detector running.
+ It sets prevLowBandEnergy and prevHighBandEnergy. */
+ && !(h_con->sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY)
+ )
{
int i;
diff --git a/libSBRenc/src/env_est.h b/libSBRenc/src/env_est.h
index 5e632a4..e17a974 100644
--- a/libSBRenc/src/env_est.h
+++ b/libSBRenc/src/env_est.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -127,6 +127,7 @@
struct ENV_CHANNEL
{
+ FAST_TRAN_DETECTOR sbrFastTransientDetector;
SBR_TRANSIENT_DETECTOR sbrTransientDetector;
SBR_CODE_ENVELOPE sbrCodeEnvelope;
SBR_CODE_ENVELOPE sbrCodeNoiseFloor;
diff --git a/libSBRenc/src/fram_gen.cpp b/libSBRenc/src/fram_gen.cpp
index 86c3c81..9a35111 100644
--- a/libSBRenc/src/fram_gen.cpp
+++ b/libSBRenc/src/fram_gen.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -266,7 +266,7 @@
static void ctrlSignal2FrameInfo (HANDLE_SBR_GRID hSbrGrid,
HANDLE_SBR_FRAME_INFO hFrameInfo,
- INT freq_res_fixfix);
+ FREQ_RES *freq_res_fixfix);
/* table for 8 time slot index */
@@ -341,8 +341,9 @@
static void generateFixFixOnly ( HANDLE_SBR_FRAME_INFO hSbrFrameInfo,
HANDLE_SBR_GRID hSbrGrid,
int tranPosInternal,
- int numberTimeSlots
- );
+ int numberTimeSlots,
+ UCHAR fResTransIsLow
+ );
/*!
@@ -402,11 +403,10 @@
const int *v_tuningFreq = v_tuning + 3;
hSbrEnvFrame->v_tuningSegm = v_tuningSegm;
- INT freq_res_fixfix = hSbrEnvFrame->freq_res_fixfix;
if (ldGrid) {
/* in case there was a transient at the very end of the previous frame, start with a transient envelope */
- if(v_transient_info_pre[1] && (numberTimeSlots - v_transient_info_pre[0] < minFrameTranDistance)){
+ if ( !tranFlag && v_transient_info_pre[1] && (numberTimeSlots - v_transient_info_pre[0] < minFrameTranDistance) ){
tranFlag = 1;
tranPos = 0;
}
@@ -529,7 +529,8 @@
generateFixFixOnly ( &(hSbrEnvFrame->SbrFrameInfo),
&(hSbrEnvFrame->SbrGrid),
tranPosInternal,
- numberTimeSlots
+ numberTimeSlots,
+ hSbrEnvFrame->fResTransIsLow
);
return &(hSbrEnvFrame->SbrFrameInfo);
@@ -677,7 +678,7 @@
---------------------------------------------------------------------------*/
ctrlSignal2FrameInfo (&hSbrEnvFrame->SbrGrid,
&hSbrEnvFrame->SbrFrameInfo,
- freq_res_fixfix);
+ hSbrEnvFrame->freq_res_fixfix);
return &hSbrEnvFrame->SbrFrameInfo;
}
@@ -692,7 +693,8 @@
static void generateFixFixOnly ( HANDLE_SBR_FRAME_INFO hSbrFrameInfo,
HANDLE_SBR_GRID hSbrGrid,
int tranPosInternal,
- int numberTimeSlots
+ int numberTimeSlots,
+ UCHAR fResTransIsLow
)
{
int nEnv, i, k=0, tranIdx;
@@ -727,8 +729,12 @@
/* adjust segment-frequency-resolution according to the segment-length */
for (i=0; i<nEnv; i++){
k = hSbrFrameInfo->borders[i+1] - hSbrFrameInfo->borders[i];
- hSbrFrameInfo->freqRes[i] = freqResTable[k];
- hSbrGrid->v_f[i] = freqResTable[k];
+ if (!fResTransIsLow)
+ hSbrFrameInfo->freqRes[i] = freqResTable[k];
+ else
+ hSbrFrameInfo->freqRes[i] = FREQ_RES_LOW;
+
+ hSbrGrid->v_f[i] = hSbrFrameInfo->freqRes[i];
}
hSbrFrameInfo->nEnvelopes = nEnv;
@@ -765,15 +771,16 @@
*******************************************************************************/
void
-FDKsbrEnc_initFrameInfoGenerator (HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame,
- INT allowSpread,
- INT numEnvStatic,
- INT staticFraming,
- INT timeSlots,
- INT freq_res_fixfix
- ,int ldGrid
- )
-
+FDKsbrEnc_initFrameInfoGenerator (
+ HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame,
+ INT allowSpread,
+ INT numEnvStatic,
+ INT staticFraming,
+ INT timeSlots,
+ const FREQ_RES* freq_res_fixfix
+ ,UCHAR fResTransIsLow,
+ INT ldGrid
+ )
{ /* FH 00-06-26 */
FDKmemclear(hSbrEnvFrame,sizeof(SBR_ENVELOPE_FRAME ));
@@ -786,7 +793,9 @@
hSbrEnvFrame->allowSpread = allowSpread;
hSbrEnvFrame->numEnvStatic = numEnvStatic;
hSbrEnvFrame->staticFraming = staticFraming;
- hSbrEnvFrame->freq_res_fixfix = freq_res_fixfix;
+ hSbrEnvFrame->freq_res_fixfix[0] = freq_res_fixfix[0];
+ hSbrEnvFrame->freq_res_fixfix[1] = freq_res_fixfix[1];
+ hSbrEnvFrame->fResTransIsLow = fResTransIsLow;
hSbrEnvFrame->length_v_bord = 0;
hSbrEnvFrame->length_v_bordFollow = 0;
@@ -804,6 +813,7 @@
hSbrEnvFrame->dmin = 2;
hSbrEnvFrame->dmax = 16;
hSbrEnvFrame->frameMiddleSlot = FRAME_MIDDLE_SLOT_512LD;
+ hSbrEnvFrame->SbrGrid.bufferFrameStart = 0;
} else
switch(timeSlots){
case NUMBER_TIME_SLOTS_1920:
@@ -1862,19 +1872,28 @@
Functionname: ctrlSignal2FrameInfo
*******************************************************************************
- Description: Calculates frame_info struct from control signal.
+ Description: Convert "clear-text" sbr_grid() to "frame info" used by the
+ envelope and noise floor estimators.
+ This is basically (except for "low level" calculations) the
+ bitstream decoder defined in the MPEG-4 standard, sub clause
+ 4.6.18.3.3, Time / Frequency Grid. See inline comments for
+ explanation of the shorten and noise border algorithms.
Arguments: hSbrGrid - source
hSbrFrameInfo - destination
+ freq_res_fixfix - frequency resolution for FIXFIX frames
Return: void; hSbrFrameInfo contains the updated FRAME_INFO struct
*******************************************************************************/
static void
-ctrlSignal2FrameInfo (HANDLE_SBR_GRID hSbrGrid,
- HANDLE_SBR_FRAME_INFO hSbrFrameInfo,
- INT freq_res_fixfix)
+ctrlSignal2FrameInfo (
+ HANDLE_SBR_GRID hSbrGrid, /* input : the grid handle */
+ HANDLE_SBR_FRAME_INFO hSbrFrameInfo, /* output: the frame info handle */
+ FREQ_RES *freq_res_fixfix /* in/out: frequency resolution for FIXFIX frames */
+ )
{
+ INT frameSplit = 0;
INT nEnv = 0, border = 0, i, k, p /*?*/;
INT *v_r = hSbrGrid->bs_rel_bord;
INT *v_f = hSbrGrid->v_f;
@@ -1887,17 +1906,10 @@
case FIXFIX:
createDefFrameInfo(hSbrFrameInfo, hSbrGrid->bs_num_env, numberTimeSlots);
- /* At this point all frequency resolutions are set to FREQ_RES_HIGH, so
- * only if freq_res_fixfix is set to FREQ_RES_LOW, they all have to be
- * changed.
- * snd */
- if (freq_res_fixfix == FREQ_RES_LOW) {
- for (i = 0; i < hSbrFrameInfo->nEnvelopes; i++) {
- hSbrFrameInfo->freqRes[i] = FREQ_RES_LOW;
- }
+ frameSplit = (hSbrFrameInfo->nEnvelopes > 1);
+ for (i = 0; i < hSbrFrameInfo->nEnvelopes; i++) {
+ hSbrGrid->v_f[i] = hSbrFrameInfo->freqRes[i] = freq_res_fixfix[frameSplit];
}
- /* ELD: store current frequency resolution */
- hSbrGrid->v_f[0] = hSbrFrameInfo->freqRes[0];
break;
case FIXVAR:
diff --git a/libSBRenc/src/fram_gen.h b/libSBRenc/src/fram_gen.h
index 3769266..00473d4 100644
--- a/libSBRenc/src/fram_gen.h
+++ b/libSBRenc/src/fram_gen.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -89,6 +89,7 @@
#define _FRAM_GEN_H
#include "sbr_def.h" /* for MAX_ENVELOPES and MAX_NOISE_ENVELOPES in struct FRAME_INFO and CODEC_TYPE */
+#include "sbr_encoder.h" /* for FREQ_RES */
#define MAX_ENVELOPES_VARVAR MAX_ENVELOPES /*!< worst case number of envelopes in a VARVAR frame */
#define MAX_ENVELOPES_FIXVAR_VARFIX 4 /*!< worst case number of envelopes in VARFIX and FIXVAR frames */
@@ -114,7 +115,7 @@
#define NUMBER_TIME_SLOTS_1920 15
#define LD_PRETRAN_OFF 3
-#define FRAME_MIDDLE_SLOT_512LD 0
+#define FRAME_MIDDLE_SLOT_512LD 4
#define NUMBER_TIME_SLOTS_512LD 8
#define TRANSIENT_OFFSET_LD 0
@@ -248,9 +249,10 @@
INT frameMiddleSlot; /*!< transient detector offset in SBR timeslots */
/* basic tuning parameters */
- INT staticFraming; /*!< 1: run static framing in time, i.e. exclusive use of bs_frame_class = FIXFIX */
- INT numEnvStatic; /*!< number of envelopes per frame for static framing */
- INT freq_res_fixfix; /*!< envelope frequency resolution to use for bs_frame_class = FIXFIX */
+ INT staticFraming; /*!< 1: run static framing in time, i.e. exclusive use of bs_frame_class = FIXFIX */
+ INT numEnvStatic; /*!< number of envelopes per frame for static framing */
+ FREQ_RES freq_res_fixfix[2]; /*!< envelope frequency resolution to use for bs_frame_class = FIXFIX; single env and split */
+ UCHAR fResTransIsLow; /*!< frequency resolution for transient frames - always low (0) or according to table (1) */
/* expert tuning parameters */
const int *v_tuningSegm; /*!< segment lengths to use around transient */
@@ -286,14 +288,16 @@
void
-FDKsbrEnc_initFrameInfoGenerator (HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame,
- INT allowSpread,
- INT numEnvStatic,
- INT staticFraming,
- INT timeSlots,
- INT freq_res_fixfix
- ,int ldGrid
- );
+FDKsbrEnc_initFrameInfoGenerator (
+ HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame,
+ INT allowSpread,
+ INT numEnvStatic,
+ INT staticFraming,
+ INT timeSlots,
+ const FREQ_RES* freq_res_fixfix
+ ,UCHAR fResTransIsLow,
+ INT ldGrid
+ );
HANDLE_SBR_FRAME_INFO
FDKsbrEnc_frameInfoGenerator (HANDLE_SBR_ENVELOPE_FRAME hSbrEnvFrame,
diff --git a/libSBRenc/src/mh_det.cpp b/libSBRenc/src/mh_det.cpp
index 73d1b8b..bc80a15 100644
--- a/libSBRenc/src/mh_det.cpp
+++ b/libSBRenc/src/mh_det.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -663,10 +663,27 @@
}
-/**************************************************************************/
+/*****************************************************************************/
/*!
- \brief Do detection for one tonality estimate.
+ \brief Detection for one tonality estimate.
+ This is the actual missing harmonics detection, using information from the
+ previous detection.
+
+ If a missing harmonic was detected (in a previous frame) due to too high
+ tonality differences, but there was not enough tonality difference in the
+ current frame, the detection algorithm still continues to trace the strongest
+ tone in the scalefactor band (assuming that this is the tone that is going to
+ be replaced in the decoder). This is done to avoid abrupt endings of sines
+ fading out (e.g. in the glockenspiel).
+
+ The function also tries to estimate where one sine is going to be replaced
+ with multiple sines (due to the patching). This is done by comparing the
+ tonality flatness measure of the original and the SBR signal.
+
+ The function also tries to estimate (for the scalefactor bands only
+ containing one qmf subband) when a strong tone in the original will be
+ replaced by a strong tone in the adjacent QMF subband.
\return none.
@@ -694,10 +711,10 @@
for(i=0;i<nSfb;i++){
thresTemp = (guideVectors.guideVectorDiff[i] != FL2FXCONST_DBL(0.0f))
- ? fixMax(fMult(mhThresh.decayGuideDiff,guideVectors.guideVectorDiff[i]), mhThresh.thresHoldDiffGuide)
+ ? fMax(fMult(mhThresh.decayGuideDiff,guideVectors.guideVectorDiff[i]), mhThresh.thresHoldDiffGuide)
: mhThresh.thresHoldDiff;
- thresTemp = fixMin(thresTemp, mhThresh.thresHoldDiff);
+ thresTemp = fMin(thresTemp, mhThresh.thresHoldDiff);
if(pDiffVecScfb[i] > thresTemp){
pHarmVec[i] = 1;
@@ -813,8 +830,11 @@
if(newDetectionAllowed){
+ /* Since we don't want to use the transient region for detection (since the tonality values
+ tend to be a bit unreliable for this region) the guide-values are copied to the current
+ starting point. */
if(totNoEst > 1){
- start = detectionStart;
+ start = detectionStart+1;
if (start != 0) {
FDKmemcpy(guideVectors[start].guideVectorDiff,guideVectors[0].guideVectorDiff,nSfb*sizeof(FIXP_DBL));
diff --git a/libSBRenc/src/nf_est.cpp b/libSBRenc/src/nf_est.cpp
index 385a043..a4c5574 100644
--- a/libSBRenc/src/nf_est.cpp
+++ b/libSBRenc/src/nf_est.cpp
@@ -298,7 +298,7 @@
SCHAR *indexVector, /*!< Index vector to obtain the patched data. */
INT missingHarmonicsFlag, /*!< Flag indicating if a strong tonal component will be missing. */
INT startIndex, /*!< Start index. */
- int numberOfEstimatesPerFrame, /*!< The number of tonality estimates per frame. */
+ UINT numberOfEstimatesPerFrame, /*!< The number of tonality estimates per frame. */
int transientFrame, /*!< A flag indicating if a transient is present. */
INVF_MODE* pInvFiltLevels, /*!< Pointer to the vector holding the inverse filtering levels. */
UINT sbrSyntaxFlags
diff --git a/libSBRenc/src/nf_est.h b/libSBRenc/src/nf_est.h
index d407274..f26f74f 100644
--- a/libSBRenc/src/nf_est.h
+++ b/libSBRenc/src/nf_est.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -119,7 +119,7 @@
SCHAR* indexVector, /*!< Index vector to obtain the patched data. */
INT missingHarmonicsFlag, /*!< Flag indicating if a strong tonal component will be missing. */
INT startIndex, /*!< Start index. */
- int numberOfEstimatesPerFrame, /*!< The number of tonality estimates per frame. */
+ UINT numberOfEstimatesPerFrame, /*!< The number of tonality estimates per frame. */
INT transientFrame, /*!< A flag indicating if a transient is present. */
INVF_MODE* pInvFiltLevels, /*!< Pointer to the vector holding the inverse filtering levels. */
UINT sbrSyntaxFlags
diff --git a/libSBRenc/src/sbr_def.h b/libSBRenc/src/sbr_def.h
index 8b7cfc6..85ac587 100644
--- a/libSBRenc/src/sbr_def.h
+++ b/libSBRenc/src/sbr_def.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -122,6 +122,8 @@
/************ Definitions ***************/
#define SBR_COMP_MODE_DELTA 0
#define SBR_COMP_MODE_CTS 1
+#define SBR_MAX_ENERGY_VALUES 5
+#define SBR_GLOBAL_TONALITY_VALUES 2
#define MAX_NUM_CHANNELS 2
@@ -232,6 +234,8 @@
#define FREQ 0
#define TIME 1
+/* qmf data scaling */
+#define QMF_SCALE_OFFSET 7
/* huffman tables */
#define CODE_BOOK_SCF_LAV00 60
@@ -268,12 +272,4 @@
}
INVF_MODE;
-typedef enum
-{
- FREQ_RES_LOW = 0,
- FREQ_RES_HIGH
-}
-FREQ_RES;
-
-
#endif
diff --git a/libSBRenc/src/sbr_encoder.cpp b/libSBRenc/src/sbr_encoder.cpp
index 9bb98c8..90b19cf 100644
--- a/libSBRenc/src/sbr_encoder.cpp
+++ b/libSBRenc/src/sbr_encoder.cpp
@@ -103,7 +103,7 @@
#define SBRENCODER_LIB_VL0 3
#define SBRENCODER_LIB_VL1 3
-#define SBRENCODER_LIB_VL2 8
+#define SBRENCODER_LIB_VL2 12
@@ -412,6 +412,23 @@
config->codecSettings.transFac = transFac;
config->codecSettings.standardBitrate = standardBitrate;
+ if (bitRate < 28000) {
+ config->threshold_AmpRes_FF_m = (FIXP_DBL)MAXVAL_DBL;
+ config->threshold_AmpRes_FF_e = 7;
+ }
+ else if (bitRate >= 28000 && bitRate <= 48000) {
+ /* The float threshold is 75
+ 0.524288f is fractional part of RELAXATION, the quotaMatrix and therefore tonality are scaled by this
+ 2/3 is because the original implementation divides the tonality values by 3, here it's divided by 2
+ 128 compensates the necessary shiftfactor of 7 */
+ config->threshold_AmpRes_FF_m = FL2FXCONST_DBL(75.0f*0.524288f/(2.0f/3.0f)/128.0f);
+ config->threshold_AmpRes_FF_e = 7;
+ }
+ else if (bitRate > 48000) {
+ config->threshold_AmpRes_FF_m = FL2FXCONST_DBL(0);
+ config->threshold_AmpRes_FF_e = 0;
+ }
+
if (bitRate==0) {
/* map vbr quality to bitrate */
if (vbrMode < 30)
@@ -467,6 +484,57 @@
config->stereoMode = sbrTuningTable[idx].stereoMode ;
config->freqScale = sbrTuningTable[idx].freqScale ;
+ if (numChannels == 1) {
+ /* stereo case */
+ switch (core) {
+ case AOT_AAC_LC:
+ if (bitRate <= (useSpeechConfig?24000U:20000U)) {
+ config->freq_res_fixfix[0] = FREQ_RES_LOW; /* set low frequency resolution for non-split frames */
+ config->freq_res_fixfix[1] = FREQ_RES_LOW; /* set low frequency resolution for split frames */
+ }
+ break;
+ case AOT_ER_AAC_ELD:
+ if (bitRate < 36000)
+ config->freq_res_fixfix[1] = FREQ_RES_LOW; /* set low frequency resolution for split frames */
+ if (bitRate < 26000) {
+ config->freq_res_fixfix[0] = FREQ_RES_LOW; /* set low frequency resolution for non-split frames */
+ config->fResTransIsLow = 1; /* for transient frames, set low frequency resolution */
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ else {
+ /* stereo case */
+ switch (core) {
+ case AOT_AAC_LC:
+ if (bitRate <= 28000) {
+ config->freq_res_fixfix[0] = FREQ_RES_LOW; /* set low frequency resolution for non-split frames */
+ config->freq_res_fixfix[1] = FREQ_RES_LOW; /* set low frequency resolution for split frames */
+ }
+ break;
+ case AOT_ER_AAC_ELD:
+ if (bitRate < 72000) {
+ config->freq_res_fixfix[1] = FREQ_RES_LOW; /* set low frequency resolution for split frames */
+ }
+ if (bitRate < 52000) {
+ config->freq_res_fixfix[0] = FREQ_RES_LOW; /* set low frequency resolution for non-split frames */
+ config->fResTransIsLow = 1; /* for transient frames, set low frequency resolution */
+ }
+ break;
+ default:
+ break;
+ }
+ if (bitRate <= 28000) {
+ /*
+ additionally restrict frequency resolution in FIXFIX frames
+ to further reduce SBR payload size */
+ config->freq_res_fixfix[0] = FREQ_RES_LOW;
+ config->freq_res_fixfix[1] = FREQ_RES_LOW;
+ }
+ }
+
/* adjust usage of parametric coding dependent on bitrate and speech config flag */
if (useSpeechConfig)
config->parametricCoding = 0;
@@ -515,6 +583,7 @@
FDKsbrEnc_InitializeSbrDefaults (sbrConfigurationPtr config,
INT downSampleFactor,
UINT codecGranuleLen
+ ,const INT isLowDelay
)
{
if ( (downSampleFactor < 1 || downSampleFactor > 2) ||
@@ -525,7 +594,11 @@
config->useWaveCoding = 0;
config->crcSbr = 0;
config->dynBwSupported = 1;
- config->tran_thr = 13000;
+ if (isLowDelay)
+ config->tran_thr = 6000;
+ else
+ config->tran_thr = 13000;
+
config->parametricCoding = 1;
config->sbrFrameSize = codecGranuleLen * downSampleFactor;
@@ -558,7 +631,9 @@
config->noiseFloorOffset = 0;
config->startFreq = 5; /* 5.9 respectively 6.0 kHz at fs = 44.1/48 kHz */
config->stopFreq = 9; /* 16.2 respectively 16.8 kHz at fs = 44.1/48 kHz */
-
+ config->freq_res_fixfix[0] = FREQ_RES_HIGH; /* non-split case */
+ config->freq_res_fixfix[1] = FREQ_RES_HIGH; /* split case */
+ config->fResTransIsLow = 0; /* for transient frames, set variable frequency resolution according to freqResTable */
/* header_extra_1 */
config->freqScale = SBR_FREQ_SCALE_DEFAULT;
@@ -1206,7 +1281,10 @@
FDK_ASSERT(params->e >= 0);
- hEnv->encEnvData.freq_res_fixfix = 1;
+ hEnv->encEnvData.freq_res_fixfix[0] = params->freq_res_fixfix[0];
+ hEnv->encEnvData.freq_res_fixfix[1] = params->freq_res_fixfix[1];
+ hEnv->encEnvData.fResTransIsLow = params->fResTransIsLow;
+
hEnv->fLevelProtect = 0;
hEnv->encEnvData.ldGrid = (sbrConfigData->sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY) ? 1 : 0;
@@ -1348,11 +1426,29 @@
e,
params->stat,
timeSlots,
- hEnv->encEnvData.freq_res_fixfix
- ,hEnv->encEnvData.ldGrid
+ hEnv->encEnvData.freq_res_fixfix,
+ hEnv->encEnvData.fResTransIsLow,
+ hEnv->encEnvData.ldGrid
);
+ if(sbrConfigData->sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY)
+ {
+ INT bandwidth_qmf_slot = (sbrConfigData->sampleFreq>>1) / (sbrConfigData->noQmfBands);
+ if(FDKsbrEnc_InitSbrFastTransientDetector(
+ &hEnv->sbrFastTransientDetector,
+ sbrConfigData->noQmfSlots,
+ bandwidth_qmf_slot,
+ sbrConfigData->noQmfBands,
+ sbrConfigData->freqBandTable[0][0]
+ ))
+ return(1);
+ }
+
+ /* The transient detector has to be initialized also if the fast transient
+ detector was active, because the values from the transient detector
+ structure are used. */
if(FDKsbrEnc_InitSbrTransientDetector (&hEnv->sbrTransientDetector,
+ sbrConfigData->sbrSyntaxFlags,
sbrConfigData->frameSize,
sbrConfigData->sampleFreq,
params,
@@ -1658,6 +1754,8 @@
/* other switches */
hSbrElement->sbrConfigData.useWaveCoding = params->useWaveCoding;
hSbrElement->sbrConfigData.useParametricCoding = params->parametricCoding;
+ hSbrElement->sbrConfigData.thresholdAmpResFF_m = params->threshold_AmpRes_FF_m;
+ hSbrElement->sbrConfigData.thresholdAmpResFF_e = params->threshold_AmpRes_FF_e;
/* init freq band table */
if(updateFreqBandTable(&hSbrElement->sbrConfigData,
@@ -1999,7 +2097,8 @@
*/
if ( ! FDKsbrEnc_InitializeSbrDefaults ( &sbrConfig[el],
*downSampleFactor,
- coreFrameLength
+ coreFrameLength,
+ IS_LOWDELAY(aot)
) )
{
error = 1;
diff --git a/libSBRenc/src/sbr_rom.cpp b/libSBRenc/src/sbr_rom.cpp
index a2b6527..7a51668 100644
--- a/libSBRenc/src/sbr_rom.cpp
+++ b/libSBRenc/src/sbr_rom.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -684,6 +684,9 @@
/** AAC LOW DELAY SECTION **/
+ /* 24 kHz dual rate - 12kHz singlerate is not allowed (deactivated in FDKsbrEnc_IsSbrSettingAvail()) */
+ { CODEC_AACLD, 8000, 32000, 12000, 1, 1, 1, 0, 0, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 8 kbit/s */
+
/*** mono ***/
/* 16/32 kHz dual rate not yet tuned ->alb copied from non LD tables*/
{ CODEC_AACLD, 16000, 18000, 16000, 1, 4, 5, 9, 7, 1, 0, 6, SBR_MONO, 3 }, /* nominal: 16 kbit/s wrr: tuned */
@@ -702,10 +705,10 @@
{ CODEC_AACLD, 52000, 64001, 22050, 1, 13,11,11,10, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 56 kbit/s */
/* 24/48 kHz dual rate */
- { CODEC_AACLD, 20000, 22000, 24000, 1, 4, 1, 8, 4, 2, 3, 6, SBR_MONO, 2 }, /* nominal: 20 kbit/s */
+ { CODEC_AACLD, 20000, 22000, 24000, 1, 3, 4, 8, 8, 2, 0, 6, SBR_MONO, 2 }, /* nominal: 20 kbit/s */
{ CODEC_AACLD, 22000, 28000, 24000, 1, 3, 8, 8, 7, 2, 0, 3, SBR_MONO, 2 }, /* nominal: 24 kbit/s */
{ CODEC_AACLD, 28000, 36000, 24000, 1, 4, 8, 8, 7, 2, 0, 3, SBR_MONO, 2 }, /* nominal: 32 kbit/s */
- { CODEC_AACLD, 36000, 56000, 24000, 1, 8, 9, 9, 9, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 40 kbit/s */
+ { CODEC_AACLD, 36000, 56000, 24000, 1, 8, 9, 9, 8, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 40 kbit/s */
{ CODEC_AACLD, 56000, 64001, 24000, 1, 13,11,11,10, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 64 kbit/s */
/* 32/64 kHz dual rate */ /* placebo settings */ /*jgr: new, copy from CODEC_AAC */
@@ -722,7 +725,7 @@
{ CODEC_AACLD, 100000,160001, 44100, 1, 13,13,11,11, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 128 */
/* 48/96 kHz dual rate */ /* 32 and 40kbps line tuned for dual-rate SBR */
- { CODEC_AACLD, 36000, 60000, 48000, 1, 8, 7, 6, 9, 2, 0, 3, SBR_MONO, 2 }, /* nominal: 40 */
+ { CODEC_AACLD, 36000, 60000, 48000, 1, 4, 7, 4, 4, 2, 0, 3, SBR_MONO, 3 }, /* nominal: 40 */
{ CODEC_AACLD, 60000, 72000, 48000, 1, 9, 9,10,10, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 64 */
{ CODEC_AACLD, 72000,100000, 48000, 1, 11,11,11,11, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 80 */
{ CODEC_AACLD, 100000,160001, 48000, 1, 13,13,11,11, 2, 0, 3, SBR_MONO, 1 }, /* nominal: 128 */
diff --git a/libSBRenc/src/ton_corr.cpp b/libSBRenc/src/ton_corr.cpp
index 224da11..af5afba 100644
--- a/libSBRenc/src/ton_corr.cpp
+++ b/libSBRenc/src/ton_corr.cpp
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -682,7 +682,7 @@
/*
Reset the patching and allocate memory for the quota matrix.
- Assing parameters for the LPC analysis.
+ Assuming parameters for the LPC analysis.
*/
if (sbrCfg->sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY) {
switch (timeSlots) {
@@ -690,7 +690,7 @@
hTonCorr->lpcLength[0] = 8 - LPC_ORDER;
hTonCorr->lpcLength[1] = 7 - LPC_ORDER;
hTonCorr->numberOfEstimates = NO_OF_ESTIMATES_LD;
- hTonCorr->numberOfEstimatesPerFrame = sbrCfg->noQmfSlots / 7;
+ hTonCorr->numberOfEstimatesPerFrame = 2; /* sbrCfg->noQmfSlots / 7 */
hTonCorr->frameStartIndexInvfEst = 0;
hTonCorr->transientPosOffset = FRAME_MIDDLE_SLOT_512LD;
break;
@@ -698,7 +698,7 @@
hTonCorr->lpcLength[0] = 8 - LPC_ORDER;
hTonCorr->lpcLength[1] = 8 - LPC_ORDER;
hTonCorr->numberOfEstimates = NO_OF_ESTIMATES_LD;
- hTonCorr->numberOfEstimatesPerFrame = sbrCfg->noQmfSlots / 8;
+ hTonCorr->numberOfEstimatesPerFrame = 2; /* sbrCfg->noQmfSlots / 8 */
hTonCorr->frameStartIndexInvfEst = 0;
hTonCorr->transientPosOffset = FRAME_MIDDLE_SLOT_512LD;
break;
diff --git a/libSBRenc/src/ton_corr.h b/libSBRenc/src/ton_corr.h
index 8c8425c..504ab03 100644
--- a/libSBRenc/src/ton_corr.h
+++ b/libSBRenc/src/ton_corr.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -118,7 +118,7 @@
INT bufferLength; /*!< Length of the r and i buffers. */
INT stepSize; /*!< Stride for the lpc estimate. */
INT numberOfEstimates; /*!< The total number of estiamtes, available in the quotaMatrix.*/
- INT numberOfEstimatesPerFrame; /*!< The number of estimates per frame available in the quotaMatrix.*/
+ UINT numberOfEstimatesPerFrame; /*!< The number of estimates per frame available in the quotaMatrix.*/
INT lpcLength[2]; /*!< Segment length used for second order LPC analysis.*/
INT nextSample; /*!< Where to start the LPC analysis of the current frame.*/
INT move; /*!< How many estimates to move in the quotaMatrix, when buffering. */
diff --git a/libSBRenc/src/tran_det.cpp b/libSBRenc/src/tran_det.cpp
index 6c62b4c..33ea60e 100644
--- a/libSBRenc/src/tran_det.cpp
+++ b/libSBRenc/src/tran_det.cpp
@@ -89,7 +89,7 @@
#include "genericStds.h"
-#define NORM_QMF_ENERGY 5.684341886080801486968994140625e-14 /* 2^-44 */
+#define NORM_QMF_ENERGY 9.31322574615479E-10 /* 2^-30 */
/* static FIXP_DBL ABS_THRES = fixMax( FL2FXCONST_DBL(1.28e5 * NORM_QMF_ENERGY), (FIXP_DBL)1) Minimum threshold for detecting changes */
#define ABS_THRES ((FIXP_DBL)16)
@@ -106,22 +106,30 @@
\return calculated value
*******************************************************************************/
+#define NRG_SHIFT 3 /* for energy summation */
+
static FIXP_DBL spectralChange(FIXP_DBL Energies[NUMBER_TIME_SLOTS_2304][MAX_FREQ_COEFFS],
INT *scaleEnergies,
FIXP_DBL EnergyTotal,
INT nSfb,
INT start,
INT border,
- INT stop)
+ INT YBufferWriteOffset,
+ INT stop,
+ INT *result_e)
{
INT i,j;
INT len1,len2;
- FIXP_DBL delta,tmp0,tmp1,tmp2;
- FIXP_DBL accu1,accu2,delta_sum,result;
+ SCHAR energies_e_diff[NUMBER_TIME_SLOTS_2304], energies_e, energyTotal_e=19, energies_e_add;
+ SCHAR prevEnergies_e_diff, newEnergies_e_diff;
+ FIXP_DBL tmp0,tmp1;
+ FIXP_DBL accu1,accu2,accu1_init,accu2_init;
+ FIXP_DBL delta, delta_sum;
+ INT accu_e, tmp_e;
- FDK_ASSERT(scaleEnergies[0] >= 0);
+ delta_sum = FL2FXCONST_DBL(0.0f);
+ *result_e = 0;
- /* equal for aac (would be not equal for mp3) */
len1 = border-start;
len2 = stop-border;
@@ -130,43 +138,91 @@
pos_weight = FL2FXCONST_DBL(0.5f) - (len1*GetInvInt(len1+len2));
pos_weight = /*FL2FXCONST_DBL(1.0)*/ (FIXP_DBL)MAXVAL_DBL - (fMult(pos_weight, pos_weight)<<2);
- delta_sum = FL2FXCONST_DBL(0.0f);
+ /*** Calc scaling for energies ***/
+ FDK_ASSERT(scaleEnergies[0] >= 0);
+ FDK_ASSERT(scaleEnergies[1] >= 0);
+
+ energies_e = 19 - FDKmin(scaleEnergies[0], scaleEnergies[1]);
+
+ /* limit shift for energy accumulation, energies_e can be -10 min. */
+ if (energies_e < -10) {
+ energies_e_add = -10 - energies_e;
+ energies_e = -10;
+ } else if (energies_e > 17) {
+ energies_e_add = energies_e - 17;
+ energies_e = 17;
+ } else {
+ energies_e_add = 0;
+ }
+
+ /* compensate scaling differences between scaleEnergies[0] and scaleEnergies[1] */
+ prevEnergies_e_diff = scaleEnergies[0] - FDKmin(scaleEnergies[0], scaleEnergies[1]) + energies_e_add + NRG_SHIFT;
+ newEnergies_e_diff = scaleEnergies[1] - FDKmin(scaleEnergies[0], scaleEnergies[1]) + energies_e_add + NRG_SHIFT;
+
+ prevEnergies_e_diff = fMin(prevEnergies_e_diff, DFRACT_BITS-1);
+ newEnergies_e_diff = fMin(newEnergies_e_diff, DFRACT_BITS-1);
+
+ for (i=start; i<YBufferWriteOffset; i++) {
+ energies_e_diff[i] = prevEnergies_e_diff;
+ }
+ for (i=YBufferWriteOffset; i<stop; i++) {
+ energies_e_diff[i] = newEnergies_e_diff;
+ }
/* Sum up energies of all QMF-timeslots for both halfs */
+ FDK_ASSERT(len1<=8); /* otherwise an overflow is possible */
+ FDK_ASSERT(len2<=8); /* otherwise an overflow is possible */
+ /* init with some energy to prevent division by zero
+ and to prevent splitting for very low levels */
+ accu1_init = scaleValue((FL2FXCONST_DBL((1.0e6*NORM_QMF_ENERGY))),-energies_e);
+ accu2_init = scaleValue((FL2FXCONST_DBL((1.0e6*NORM_QMF_ENERGY))),-energies_e);
+ accu1_init = fMult(accu1_init, (FIXP_DBL)len1<<((DFRACT_BITS-1)-NRG_SHIFT-1))<<1;
+ accu2_init = fMult(accu2_init, (FIXP_DBL)len2<<((DFRACT_BITS-1)-NRG_SHIFT-1))<<1;
+
for (j=0; j<nSfb; j++) {
- #define NRG_SCALE 3
- /* init with some energy to prevent division by zero
- and to prevent splitting for very low levels */
- accu1 = ((FL2FXCONST_DBL((1.0e6*NORM_QMF_ENERGY*8.0/32))) << fixMin(scaleEnergies[0],25))>>NRG_SCALE; /* complex init for compare with original version */
- accu2 = ((FL2FXCONST_DBL((1.0e6*NORM_QMF_ENERGY*8.0/32))) << fixMin(scaleEnergies[0],25))>>NRG_SCALE; /* can be simplified in dsp implementation */
+
+ accu1 = accu1_init;
+ accu2 = accu2_init;
+ accu_e = energies_e+3;
/* Sum up energies in first half */
for (i=start; i<border; i++) {
- accu1 += (Energies[i][j]>>NRG_SCALE);
+ accu1 += scaleValue(Energies[i][j], -energies_e_diff[i]);
}
/* Sum up energies in second half */
for (i=border; i<stop; i++) {
- accu2 += (Energies[i][j]>>NRG_SCALE);
+ accu2 += scaleValue(Energies[i][j], -energies_e_diff[i]);
}
/* Energy change in current band */
- tmp0 = CalcLdData(accu2);
- tmp1 = CalcLdData(accu1);
- tmp2 = (tmp0 - tmp1 + CalcLdData(len1)-CalcLdData(len2));
- delta = fixp_abs(fMult(tmp2, FL2FXCONST_DBL(0.6931471806f)));
+ #define LN2 FL2FXCONST_DBL(0.6931471806f) /* ln(2) */
+ tmp0 = fLog2(accu2, accu_e) - fLog2(accu1, accu_e);
+ tmp1 = fLog2((FIXP_DBL)len1, 31) - fLog2((FIXP_DBL)len2, 31);
+ delta = fMult(LN2, (tmp0 + tmp1));
+ delta = (FIXP_DBL)FDKabs( delta );
/* Weighting with amplitude ratio of this band */
- result = (EnergyTotal == FL2FXCONST_DBL(0.0f))
- ? FL2FXCONST_DBL(0.f)
- : FDKsbrEnc_LSI_divide_scale_fract( (accu1+accu2),
- (EnergyTotal>>NRG_SCALE)+(FIXP_DBL)1,
- (FIXP_DBL)MAXVAL_DBL >> fixMin(scaleEnergies[0],(DFRACT_BITS-1)) );
+ accu_e++;
+ accu1>>=1;
+ accu2>>=1;
+ if (accu_e & 1) {
+ accu_e++;
+ accu1>>=1;
+ accu2>>=1;
+ }
- delta_sum += (FIXP_DBL)(fMult(sqrtFixp(result), delta));
+ delta_sum += fMult(sqrtFixp(accu1+accu2), delta);
+ *result_e = ((accu_e>>1) + LD_DATA_SHIFT);
}
+ energyTotal_e+=1; /* for a defined square result exponent, the exponent has to be even */
+ EnergyTotal<<=1;
+ delta_sum = fMult(delta_sum, invSqrtNorm2(EnergyTotal, &tmp_e));
+ *result_e = *result_e + (tmp_e-(energyTotal_e>>1));
+
return fMult(delta_sum, pos_weight);
+
}
@@ -175,9 +231,12 @@
*******************************************************************************
\brief Calculates total lowband energy
- The return value nrgTotal is scaled by the factor (1/32.0)
+ The input values Energies[0] (low-band) are scaled by the factor
+ 2^(14-*scaleEnergies[0])
+ The input values Energies[1] (high-band) are scaled by the factor
+ 2^(14-*scaleEnergies[1])
- \return total energy in the lowband
+ \return total energy in the lowband, scaled by the factor 2^19
*******************************************************************************/
static FIXP_DBL addLowbandEnergies(FIXP_DBL **Energies,
int *scaleEnergies,
@@ -194,6 +253,7 @@
int ts,k;
/* Sum up lowband energy from one frame at offset tran_off */
+ /* freqBandTable[LORES] has MAX_FREQ_COEFFS/2 +1 coeefs max. */
for (ts=tran_offdiv2; ts<YBufferWriteOffset; ts++) {
for (k = 0; k < freqBandTable[0]; k++) {
accu1 += Energies[ts][k] >> 6;
@@ -201,12 +261,12 @@
}
for (; ts<tran_offdiv2+(slots>>nrgSzShift); ts++) {
for (k = 0; k < freqBandTable[0]; k++) {
- accu2 += Energies[ts][k] >> 6;
+ accu2 += Energies[ts][k] >> 9;
}
}
- nrgTotal = ( (accu1 >> fixMin(scaleEnergies[0],(DFRACT_BITS-1)))
- + (accu2 >> fixMin(scaleEnergies[1],(DFRACT_BITS-1))) ) << (2);
+ nrgTotal = ( scaleValueSaturate(accu1, 1-scaleEnergies[0]) )
+ + ( scaleValueSaturate(accu2, 4-scaleEnergies[1]) );
return(nrgTotal);
}
@@ -222,21 +282,23 @@
is 1 SBR-band. Therefore the data to be fed into the spectralChange
function is reduced.
- The values EnergiesM are scaled by the factor (1/32.0) and scaleEnergies[0]
- The return value nrgTotal is scaled by the factor (1/32.0)
+ The values EnergiesM are scaled by the factor (2^19-scaleEnergies[0]) for
+ slots<YBufferWriteOffset and by the factor (2^19-scaleEnergies[1]) for
+ slots>=YBufferWriteOffset.
- \return total energy in the highband
+ \return total energy in the highband, scaled by factor 2^19
*******************************************************************************/
static FIXP_DBL addHighbandEnergies(FIXP_DBL **RESTRICT Energies, /*!< input */
INT *scaleEnergies,
+ INT YBufferWriteOffset,
FIXP_DBL EnergiesM[NUMBER_TIME_SLOTS_2304][MAX_FREQ_COEFFS], /*!< Combined output */
UCHAR *RESTRICT freqBandTable,
INT nSfb,
INT sbrSlots,
INT timeStep)
{
- INT i,j,k,slotIn,slotOut,scale;
+ INT i,j,k,slotIn,slotOut,scale[2];
INT li,ui;
FIXP_DBL nrgTotal;
FIXP_DBL accu = FL2FXCONST_DBL(0.0f);
@@ -245,7 +307,7 @@
combine QMF-bands to SBR-bands,
combine Left and Right channel */
for (slotOut=0; slotOut<sbrSlots; slotOut++) {
- slotIn = 2*slotOut;
+ slotIn = timeStep*slotOut;
for (j=0; j<nSfb; j++) {
accu = FL2FXCONST_DBL(0.0f);
@@ -262,19 +324,29 @@
}
}
- scale = fixMin(8,scaleEnergies[0]); /* scale energies down before add up */
+ /* scale energies down before add up */
+ scale[0] = fixMin(8,scaleEnergies[0]);
+ scale[1] = fixMin(8,scaleEnergies[1]);
- if ((scaleEnergies[0]-1) > (DFRACT_BITS-1) )
+ if ((scaleEnergies[0]-scale[0]) > (DFRACT_BITS-1) || (scaleEnergies[1]-scale[0]) > (DFRACT_BITS-1))
nrgTotal = FL2FXCONST_DBL(0.0f);
else {
/* Now add all energies */
accu = FL2FXCONST_DBL(0.0f);
- for (slotOut=0; slotOut<sbrSlots; slotOut++) {
+
+ for (slotOut=0; slotOut<YBufferWriteOffset; slotOut++) {
for (j=0; j<nSfb; j++) {
- accu += (EnergiesM[slotOut][j] >> scale);
+ accu += (EnergiesM[slotOut][j] >> scale[0]);
}
}
- nrgTotal = accu >> (scaleEnergies[0]-scale);
+ nrgTotal = accu >> (scaleEnergies[0]-scale[0]);
+
+ for (slotOut=YBufferWriteOffset; slotOut<sbrSlots; slotOut++) {
+ for (j=0; j<nSfb; j++) {
+ accu += (EnergiesM[slotOut][j] >> scale[0]);
+ }
+ }
+ nrgTotal = accu >> (scaleEnergies[1]-scale[1]);
}
return(nrgTotal);
@@ -299,18 +371,23 @@
int YBufferSzShift,
int nSfb,
int timeStep,
- int no_cols)
+ int no_cols,
+ FIXP_DBL* tonality)
{
if (tran_vector[1]==0) /* no transient was detected */
{
FIXP_DBL delta;
- FIXP_DBL EnergiesM[NUMBER_TIME_SLOTS_2304][MAX_FREQ_COEFFS];
+ INT delta_e;
+ FIXP_DBL (*EnergiesM)[MAX_FREQ_COEFFS];
FIXP_DBL EnergyTotal,newLowbandEnergy,newHighbandEnergy;
INT border;
INT sbrSlots = fMultI(GetInvInt(timeStep),no_cols);
+ C_ALLOC_SCRATCH_START(_EnergiesM, FIXP_DBL, NUMBER_TIME_SLOTS_2304*MAX_FREQ_COEFFS)
FDK_ASSERT( sbrSlots * timeStep == no_cols );
+ EnergiesM = (FIXP_DBL(*)[MAX_FREQ_COEFFS])_EnergiesM;
+
/*
Get Lowband-energy over a range of 2 frames (Look half a frame back and ahead).
*/
@@ -324,16 +401,13 @@
newHighbandEnergy = addHighbandEnergies(Energies,
scaleEnergies,
+ YBufferWriteOffset,
EnergiesM,
freqBandTable,
nSfb,
sbrSlots,
timeStep);
- if ( h_sbrTransientDetector->frameShift != 0 ) {
- if (tran_vector[1]==0)
- tran_vector[0] = 0;
- } else
{
/* prevLowBandEnergy: Corresponds to 1 frame, starting with half a frame look-behind
newLowbandEnergy: Corresponds to 1 frame, starting in the middle of the current frame */
@@ -343,23 +417,39 @@
of a FIXFIX-frame with 2 envelopes. */
border = (sbrSlots+1) >> 1;
+ if ( (INT)EnergyTotal&0xffffffe0 && (scaleEnergies[0]<32 || scaleEnergies[1]<32) ) /* i.e. > 31 */ {
delta = spectralChange(EnergiesM,
scaleEnergies,
EnergyTotal,
nSfb,
0,
border,
- sbrSlots);
+ YBufferWriteOffset,
+ sbrSlots,
+ &delta_e
+ );
+ } else {
+ delta = FL2FXCONST_DBL(0.0f);
+ delta_e = 0;
- if (delta > (h_sbrTransientDetector->split_thr >> LD_DATA_SHIFT)) /* delta scaled by 1/64 */
+ /* set tonality to 0 when energy is very low, since the amplitude
+ resolution should then be low as well */
+ *tonality = FL2FXCONST_DBL(0.0f);
+ }
+
+
+ if ( fIsLessThan(h_sbrTransientDetector->split_thr_m, h_sbrTransientDetector->split_thr_e, delta, delta_e) ) {
tran_vector[0] = 1; /* Set flag for splitting */
- else
+ } else {
tran_vector[0] = 0;
+ }
+
}
/* Update prevLowBandEnergy */
h_sbrTransientDetector->prevLowBandEnergy = newLowbandEnergy;
h_sbrTransientDetector->prevHighBandEnergy = newHighbandEnergy;
+ C_ALLOC_SCRATCH_END(_EnergiesM, FIXP_DBL, NUMBER_TIME_SLOTS_2304*MAX_FREQ_COEFFS)
}
}
@@ -636,6 +726,7 @@
int
FDKsbrEnc_InitSbrTransientDetector(HANDLE_SBR_TRANSIENT_DETECTOR h_sbrTransientDetector,
+ UINT sbrSyntaxFlags, /* SBR syntax flags derived from AOT. */
INT frameSize,
INT sampleFreq,
sbrConfigurationPtr params,
@@ -649,8 +740,8 @@
{
INT totalBitrate = params->codecSettings.standardBitrate * params->codecSettings.nChannels;
INT codecBitrate = params->codecSettings.bitRate;
- FIXP_DBL bitrateFactor_fix, framedur_fix;
- INT scale_0, scale_1;
+ FIXP_DBL bitrateFactor_m, framedur_fix;
+ INT bitrateFactor_e, tmp_e;
FDKmemclear(h_sbrTransientDetector,sizeof(SBR_TRANSIENT_DETECTOR));
@@ -658,11 +749,12 @@
h_sbrTransientDetector->tran_off = tran_off;
if(codecBitrate) {
- bitrateFactor_fix = fDivNorm((FIXP_DBL)totalBitrate, (FIXP_DBL)(codecBitrate<<2),&scale_0);
+ bitrateFactor_m = fDivNorm((FIXP_DBL)totalBitrate, (FIXP_DBL)(codecBitrate<<2),&bitrateFactor_e);
+ bitrateFactor_e += 2;
}
else {
- bitrateFactor_fix = FL2FXCONST_DBL(1.0/4.0);
- scale_0 = 0;
+ bitrateFactor_m = FL2FXCONST_DBL(1.0/4.0);
+ bitrateFactor_e = 2;
}
framedur_fix = fDivNorm(frameSize, sampleFreq);
@@ -674,9 +766,13 @@
FIXP_DBL tmp = framedur_fix - FL2FXCONST_DBL(0.010);
tmp = fixMax(tmp, FL2FXCONST_DBL(0.0001));
- tmp = fDivNorm(FL2FXCONST_DBL(0.000075), fPow2(tmp), &scale_1);
+ tmp = fDivNorm(FL2FXCONST_DBL(0.000075), fPow2(tmp), &tmp_e);
- scale_1 = (scale_1 + scale_0 + 2);
+ bitrateFactor_e = (tmp_e + bitrateFactor_e);
+
+ if(sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY) {
+ bitrateFactor_e--; /* divide by 2 */
+ }
FDK_ASSERT(no_cols <= QMF_MAX_TIME_SLOTS);
FDK_ASSERT(no_rows <= QMF_CHANNELS);
@@ -684,7 +780,8 @@
h_sbrTransientDetector->no_cols = no_cols;
h_sbrTransientDetector->tran_thr = (FIXP_DBL)((params->tran_thr << (32-24-1)) / no_rows);
h_sbrTransientDetector->tran_fc = tran_fc;
- h_sbrTransientDetector->split_thr = scaleValueSaturate(fMult(tmp, bitrateFactor_fix), scale_1);
+ h_sbrTransientDetector->split_thr_m = fMult(tmp, bitrateFactor_m);
+ h_sbrTransientDetector->split_thr_e = bitrateFactor_e;
h_sbrTransientDetector->no_rows = no_rows;
h_sbrTransientDetector->mode = params->tran_det_mode;
h_sbrTransientDetector->prevLowBandEnergy = FL2FXCONST_DBL(0.0f);
@@ -692,3 +789,281 @@
return (0);
}
+
+#define ENERGY_SCALING_SIZE 32
+
+INT FDKsbrEnc_InitSbrFastTransientDetector(
+ HANDLE_FAST_TRAN_DET h_sbrFastTransientDetector,
+ const INT time_slots_per_frame,
+ const INT bandwidth_qmf_slot,
+ const INT no_qmf_channels,
+ const INT sbr_qmf_1st_band
+ )
+{
+
+ int i, e;
+ int buff_size;
+ FIXP_DBL myExp;
+ FIXP_DBL myExpSlot;
+
+ h_sbrFastTransientDetector->lookahead = TRAN_DET_LOOKAHEAD;
+ h_sbrFastTransientDetector->nTimeSlots = time_slots_per_frame;
+
+ buff_size = h_sbrFastTransientDetector->nTimeSlots + h_sbrFastTransientDetector->lookahead;
+
+ for(i=0; i< buff_size; i++) {
+ h_sbrFastTransientDetector->delta_energy[i] = FL2FXCONST_DBL(0.0f);
+ h_sbrFastTransientDetector->energy_timeSlots[i] = FL2FXCONST_DBL(0.0f);
+ h_sbrFastTransientDetector->lowpass_energy[i] = FL2FXCONST_DBL(0.0f);
+ h_sbrFastTransientDetector->transientCandidates[i] = 0;
+ }
+
+ FDK_ASSERT(bandwidth_qmf_slot > 0.f);
+ h_sbrFastTransientDetector->stopBand = fMin(TRAN_DET_STOP_FREQ/bandwidth_qmf_slot, no_qmf_channels);
+ h_sbrFastTransientDetector->startBand = fMin(sbr_qmf_1st_band, h_sbrFastTransientDetector->stopBand - TRAN_DET_MIN_QMFBANDS);
+
+ FDK_ASSERT(h_sbrFastTransientDetector->startBand < no_qmf_channels);
+ FDK_ASSERT(h_sbrFastTransientDetector->startBand < h_sbrFastTransientDetector->stopBand);
+ FDK_ASSERT(h_sbrFastTransientDetector->startBand > 1);
+ FDK_ASSERT(h_sbrFastTransientDetector->stopBand > 1);
+
+ /* the energy weighting and adding up has a headroom of 6 Bits,
+ so up to 64 bands can be added without potential overflow. */
+ FDK_ASSERT(h_sbrFastTransientDetector->stopBand - h_sbrFastTransientDetector->startBand <= 64);
+
+ /* QMF_HP_dB_SLOPE_FIX says that we want a 20 dB per 16 kHz HP filter.
+ The following lines map this to the QMF bandwidth. */
+ #define EXP_E 7 /* QMF_CHANNELS (=64) multiplications max, max. allowed sum is 0.5 */
+ myExp = fMultNorm(QMF_HP_dBd_SLOPE_FIX, (FIXP_DBL)bandwidth_qmf_slot, &e);
+ myExp = scaleValueSaturate(myExp, e+0+DFRACT_BITS-1-EXP_E);
+ myExpSlot = myExp;
+
+ for(i=0; i<QMF_CHANNELS; i++){
+ /* Calculate dBf over all qmf bands:
+ dBf = (10^(0.002266f/10*bw(slot)))^(band) =
+ = 2^(log2(10)*0.002266f/10*bw(slot)*band) =
+ = 2^(0.00075275f*bw(slot)*band) */
+
+ FIXP_DBL dBf_m; /* dBf mantissa */
+ INT dBf_e; /* dBf exponent */
+ INT tmp;
+
+ INT dBf_int; /* dBf integer part */
+ FIXP_DBL dBf_fract; /* dBf fractional part */
+
+ /* myExp*(i+1) = myExp_int - myExp_fract
+ myExp*(i+1) is split up here for better accuracy of CalcInvLdData(),
+ for its result can be split up into an integer and a fractional part */
+
+ /* Round up to next integer */
+ FIXP_DBL myExp_int = (myExpSlot & (FIXP_DBL)0xfe000000) + (FIXP_DBL)0x02000000;
+
+ /* This is the fractional part that needs to be substracted */
+ FIXP_DBL myExp_fract = myExp_int - myExpSlot;
+
+ /* Calc integer part */
+ dBf_int = CalcInvLdData(myExp_int);
+ /* The result needs to be re-scaled. The ld(myExp_int) had been scaled by EXP_E,
+ the CalcInvLdData expects the operand to be scaled by LD_DATA_SHIFT.
+ Therefore, the correctly scaled result is dBf_int^(2^(EXP_E-LD_DATA_SHIFT)),
+ which is dBf_int^2 */
+ dBf_int *= dBf_int;
+
+ /* Calc fractional part */
+ dBf_fract = CalcInvLdData(-myExp_fract);
+ /* The result needs to be re-scaled. The ld(myExp_fract) had been scaled by EXP_E,
+ the CalcInvLdData expects the operand to be scaled by LD_DATA_SHIFT.
+ Therefore, the correctly scaled result is dBf_fract^(2^(EXP_E-LD_DATA_SHIFT)),
+ which is dBf_fract^2 */
+ dBf_fract = fMultNorm(dBf_fract, dBf_fract, &tmp);
+
+ /* Get worst case scaling of multiplication result */
+ dBf_e = (DFRACT_BITS-1 - tmp) - CountLeadingBits(dBf_int);
+
+ /* Now multiply integer with fractional part of the result, thus resulting
+ in the overall accurate fractional result */
+ dBf_m = fMultNorm(dBf_int, dBf_fract, &e);
+ dBf_m = scaleValueSaturate(dBf_m, e+DFRACT_BITS-1+tmp-dBf_e);
+ myExpSlot += myExp;
+
+ /* Keep the results */
+ h_sbrFastTransientDetector->dBf_m[i] = dBf_m;
+ h_sbrFastTransientDetector->dBf_e[i] = dBf_e;
+
+ }
+
+ /* Make sure that dBf is greater than 1.0 (because it should be a highpass) */
+ /* ... */
+
+ return 0;
+}
+
+void FDKsbrEnc_fastTransientDetect(
+ const HANDLE_FAST_TRAN_DET h_sbrFastTransientDetector,
+ const FIXP_DBL *const *Energies,
+ const int *const scaleEnergies,
+ const INT YBufferWriteOffset,
+ UCHAR *const tran_vector
+ )
+{
+ int timeSlot, band;
+
+ FIXP_DBL max_delta_energy; /* helper to store maximum energy ratio */
+ int max_delta_energy_scale; /* helper to store scale of maximum energy ratio */
+ int ind_max = 0; /* helper to store index of maximum energy ratio */
+ int isTransientInFrame = 0;
+
+ const int nTimeSlots = h_sbrFastTransientDetector->nTimeSlots;
+ const int lookahead = h_sbrFastTransientDetector->lookahead;
+ const int startBand = h_sbrFastTransientDetector->startBand;
+ const int stopBand = h_sbrFastTransientDetector->stopBand;
+
+ int * transientCandidates = h_sbrFastTransientDetector->transientCandidates;
+
+ FIXP_DBL * energy_timeSlots = h_sbrFastTransientDetector->energy_timeSlots;
+ int * energy_timeSlots_scale = h_sbrFastTransientDetector->energy_timeSlots_scale;
+
+ FIXP_DBL * delta_energy = h_sbrFastTransientDetector->delta_energy;
+ int * delta_energy_scale = h_sbrFastTransientDetector->delta_energy_scale;
+
+ const FIXP_DBL thr = TRAN_DET_THRSHLD;
+ const INT thr_scale = TRAN_DET_THRSHLD_SCALE;
+
+ /*reset transient info*/
+ tran_vector[2] = 0;
+
+ /* reset transient candidates */
+ FDKmemclear(transientCandidates+lookahead, nTimeSlots*sizeof(int));
+
+ for(timeSlot = lookahead; timeSlot < nTimeSlots + lookahead; timeSlot++) {
+ int i, norm;
+ FIXP_DBL tmpE = FL2FXCONST_DBL(0.0f);
+ int headroomEnSlot = DFRACT_BITS-1;
+
+ FIXP_DBL smallNRG = FL2FXCONST_DBL(1e-2f);
+ FIXP_DBL denominator;
+ INT denominator_scale;
+
+ /* determine minimum headroom of energy values for this timeslot */
+ for(band = startBand; band < stopBand; band++) {
+ int tmp_headroom = fNormz(Energies[timeSlot][band])-1;
+ if(tmp_headroom < headroomEnSlot){
+ headroomEnSlot = tmp_headroom;
+ }
+ }
+
+ for(i = 0, band = startBand; band < stopBand; band++, i++) {
+ /* energy is weighted by weightingfactor stored in dBf_m array */
+ /* dBf_m index runs from 0 to stopBand-startband */
+ /* energy shifted by calculated headroom for maximum precision */
+ FIXP_DBL weightedEnergy = fMult(Energies[timeSlot][band]<<headroomEnSlot, h_sbrFastTransientDetector->dBf_m[i]);
+
+ /* energy is added up */
+ /* shift by 6 to have a headroom for maximum 64 additions */
+ /* shift by dBf_e to handle weighting factor dependent scale factors */
+ tmpE += weightedEnergy >> (6 + (10 - h_sbrFastTransientDetector->dBf_e[i]));
+ }
+
+ /* store calculated energy for timeslot */
+ energy_timeSlots[timeSlot] = tmpE;
+
+ /* calculate overall scale factor for energy of this timeslot */
+ /* = original scale factor of energies (-scaleEnergies[0]+2*QMF_SCALE_OFFSET or -scaleEnergies[1]+2*QMF_SCALE_OFFSET */
+ /* depending on YBufferWriteOffset) */
+ /* + weighting factor scale (10) */
+ /* + adding up scale factor ( 6) */
+ /* - headroom of energy value (headroomEnSlot) */
+ if(timeSlot < YBufferWriteOffset){
+ energy_timeSlots_scale[timeSlot] = (-scaleEnergies[0]+2*QMF_SCALE_OFFSET) + (10+6) - headroomEnSlot;
+ } else {
+ energy_timeSlots_scale[timeSlot] = (-scaleEnergies[1]+2*QMF_SCALE_OFFSET) + (10+6) - headroomEnSlot;
+ }
+
+ /* Add a small energy to the denominator, thus making the transient
+ detection energy-dependent. Loud transients are being detected,
+ silent ones not. */
+
+ /* make sure that smallNRG does not overflow */
+ if ( -energy_timeSlots_scale[timeSlot-1] + 1 > 5 )
+ {
+ denominator = smallNRG;
+ denominator_scale = 0;
+ } else {
+ /* Leave an additional headroom of 1 bit for this addition. */
+ smallNRG = scaleValue(smallNRG, -(energy_timeSlots_scale[timeSlot-1] + 1));
+ denominator = (energy_timeSlots[timeSlot-1]>>1) + smallNRG;
+ denominator_scale = energy_timeSlots_scale[timeSlot-1]+1;
+ }
+
+ delta_energy[timeSlot] = fDivNorm(energy_timeSlots[timeSlot], denominator, &norm);
+ delta_energy_scale[timeSlot] = energy_timeSlots_scale[timeSlot] - denominator_scale + norm;
+ }
+
+ /*get transient candidates*/
+ /* For every timeslot, check if delta(E) exceeds the threshold. If it did,
+ it could potentially be marked as a transient candidate. However, the 2
+ slots before the current one must not be transients with an energy higher
+ than 1.4*E(current). If both aren't transients or if the energy of the
+ current timesolot is more than 1.4 times higher than the energy in the
+ last or the one before the last slot, it is marked as a transient.*/
+
+ FDK_ASSERT(lookahead >= 2);
+ for(timeSlot = lookahead; timeSlot < nTimeSlots + lookahead; timeSlot++) {
+ FIXP_DBL energy_cur_slot_weighted = fMult(energy_timeSlots[timeSlot],FL2FXCONST_DBL(1.0f/1.4f));
+ if( !fIsLessThan(delta_energy[timeSlot], delta_energy_scale[timeSlot], thr, thr_scale) &&
+ ( ((transientCandidates[timeSlot-2]==0) && (transientCandidates[timeSlot-1]==0)) ||
+ !fIsLessThan(energy_cur_slot_weighted, energy_timeSlots_scale[timeSlot], energy_timeSlots[timeSlot-1], energy_timeSlots_scale[timeSlot-1] ) ||
+ !fIsLessThan(energy_cur_slot_weighted, energy_timeSlots_scale[timeSlot], energy_timeSlots[timeSlot-2], energy_timeSlots_scale[timeSlot-2] )
+ )
+ )
+{
+ /* in case of strong transients, subsequent
+ * qmf slots might be recognized as transients. */
+ transientCandidates[timeSlot] = 1;
+ }
+ }
+
+ /*get transient with max energy*/
+ max_delta_energy = FL2FXCONST_DBL(0.0f);
+ max_delta_energy_scale = 0;
+ ind_max = 0;
+ isTransientInFrame = 0;
+ for(timeSlot = 0; timeSlot < nTimeSlots; timeSlot++) {
+ int scale = fMax(delta_energy_scale[timeSlot], max_delta_energy_scale);
+ if(transientCandidates[timeSlot] && ( (delta_energy[timeSlot] >> (scale - delta_energy_scale[timeSlot])) > (max_delta_energy >> (scale - max_delta_energy_scale)) ) ) {
+ max_delta_energy = delta_energy[timeSlot];
+ max_delta_energy_scale = scale;
+ ind_max = timeSlot;
+ isTransientInFrame = 1;
+ }
+ }
+
+ /*from all transient candidates take the one with the biggest energy*/
+ if(isTransientInFrame) {
+ tran_vector[0] = ind_max;
+ tran_vector[1] = 1;
+ } else {
+ /*reset transient info*/
+ tran_vector[0] = tran_vector[1] = 0;
+ }
+
+ /*check for transients in lookahead*/
+ for(timeSlot = nTimeSlots; timeSlot < nTimeSlots + lookahead; timeSlot++) {
+ if(transientCandidates[timeSlot]) {
+ tran_vector[2] = 1;
+ }
+ }
+
+ /*update buffers*/
+ for(timeSlot = 0; timeSlot < lookahead; timeSlot++) {
+ transientCandidates[timeSlot] = transientCandidates[nTimeSlots + timeSlot];
+
+ /* fixpoint stuff */
+ energy_timeSlots[timeSlot] = energy_timeSlots[nTimeSlots + timeSlot];
+ energy_timeSlots_scale[timeSlot] = energy_timeSlots_scale[nTimeSlots + timeSlot];
+
+ delta_energy[timeSlot] = delta_energy[nTimeSlots + timeSlot];
+ delta_energy_scale[timeSlot] = delta_energy_scale[nTimeSlots + timeSlot];
+ }
+}
+
diff --git a/libSBRenc/src/tran_det.h b/libSBRenc/src/tran_det.h
index 95b5d2e..6fe1023 100644
--- a/libSBRenc/src/tran_det.h
+++ b/libSBRenc/src/tran_det.h
@@ -2,7 +2,7 @@
/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
All rights reserved.
1. INTRODUCTION
@@ -96,7 +96,8 @@
FIXP_DBL transients[QMF_MAX_TIME_SLOTS+(QMF_MAX_TIME_SLOTS/2)];
FIXP_DBL thresholds[QMF_CHANNELS];
FIXP_DBL tran_thr; /* Master threshold for transient signals */
- FIXP_DBL split_thr; /* Threshold for splitting FIXFIX-frames into 2 env */
+ FIXP_DBL split_thr_m; /* Threshold for splitting FIXFIX-frames into 2 env */
+ INT split_thr_e; /* Scale for splitting threshold */
FIXP_DBL prevLowBandEnergy; /* Energy of low band */
FIXP_DBL prevHighBandEnergy; /* Energy of high band */
INT tran_fc; /* Number of lowband subbands to discard */
@@ -112,6 +113,57 @@
typedef SBR_TRANSIENT_DETECTOR *HANDLE_SBR_TRANSIENT_DETECTOR;
+#define TRAN_DET_LOOKAHEAD 2
+#define TRAN_DET_START_FREQ 4500 /*start frequency for transient detection*/
+#define TRAN_DET_STOP_FREQ 13500 /*stop frequency for transient detection*/
+#define TRAN_DET_MIN_QMFBANDS 4 /* minimum qmf bands for transient detection */
+#define QMF_HP_dBd_SLOPE_FIX FL2FXCONST_DBL(0.00075275f) /* 0.002266f/10 * log2(10) */
+#define TRAN_DET_THRSHLD FL2FXCONST_DBL(3.2f/4.f)
+#define TRAN_DET_THRSHLD_SCALE (2)
+
+typedef struct
+{
+ INT transientCandidates[QMF_MAX_TIME_SLOTS + TRAN_DET_LOOKAHEAD];
+ INT nTimeSlots;
+ INT lookahead;
+ INT startBand;
+ INT stopBand;
+
+ FIXP_DBL dBf_m[QMF_CHANNELS];
+ INT dBf_e[QMF_CHANNELS];
+
+ FIXP_DBL energy_timeSlots[QMF_MAX_TIME_SLOTS + TRAN_DET_LOOKAHEAD];
+ INT energy_timeSlots_scale[QMF_MAX_TIME_SLOTS + TRAN_DET_LOOKAHEAD];
+
+ FIXP_DBL delta_energy[QMF_MAX_TIME_SLOTS + TRAN_DET_LOOKAHEAD];
+ INT delta_energy_scale[QMF_MAX_TIME_SLOTS + TRAN_DET_LOOKAHEAD];
+
+ FIXP_DBL lowpass_energy[QMF_MAX_TIME_SLOTS + TRAN_DET_LOOKAHEAD];
+ INT lowpass_energy_scale[QMF_MAX_TIME_SLOTS + TRAN_DET_LOOKAHEAD];
+#if defined (FTD_LOG)
+ FDKFILE *ftd_log;
+#endif
+}
+FAST_TRAN_DETECTOR;
+typedef FAST_TRAN_DETECTOR *HANDLE_FAST_TRAN_DET;
+
+
+INT FDKsbrEnc_InitSbrFastTransientDetector(
+ HANDLE_FAST_TRAN_DET h_sbrFastTransientDetector,
+ const INT time_slots_per_frame,
+ const INT bandwidth_qmf_slot,
+ const INT no_qmf_channels,
+ const INT sbr_qmf_1st_band
+ );
+
+void FDKsbrEnc_fastTransientDetect(
+ const HANDLE_FAST_TRAN_DET h_sbrFastTransientDetector,
+ const FIXP_DBL *const *Energies,
+ const int *const scaleEnergies,
+ const INT YBufferWriteOffset,
+ UCHAR *const tran_vector
+ );
+
void
FDKsbrEnc_transientDetect(HANDLE_SBR_TRANSIENT_DETECTOR h_sbrTransientDetector,
FIXP_DBL **Energies,
@@ -124,6 +176,7 @@
int
FDKsbrEnc_InitSbrTransientDetector (HANDLE_SBR_TRANSIENT_DETECTOR h_sbrTransientDetector,
+ UINT sbrSyntaxFlags, /* SBR syntax flags derived from AOT. */
INT frameSize,
INT sampleFreq,
sbrConfigurationPtr params,
@@ -145,6 +198,6 @@
int YBufferSzShift,
int nSfb,
int timeStep,
- int no_cols);
-
+ int no_cols,
+ FIXP_DBL* tonality);
#endif
