aboutsummaryrefslogtreecommitdiffstats
path: root/fdk-aac/libSACdec/src/sac_reshapeBBEnv.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'fdk-aac/libSACdec/src/sac_reshapeBBEnv.cpp')
-rw-r--r--fdk-aac/libSACdec/src/sac_reshapeBBEnv.cpp215
1 files changed, 91 insertions, 124 deletions
diff --git a/fdk-aac/libSACdec/src/sac_reshapeBBEnv.cpp b/fdk-aac/libSACdec/src/sac_reshapeBBEnv.cpp
index 87c0ac6..272d009 100644
--- a/fdk-aac/libSACdec/src/sac_reshapeBBEnv.cpp
+++ b/fdk-aac/libSACdec/src/sac_reshapeBBEnv.cpp
@@ -1,7 +1,7 @@
/* -----------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android
-© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
+© Copyright 1995 - 2019 Fraunhofer-Gesellschaft zur Förderung der angewandten
Forschung e.V. All rights reserved.
1. INTRODUCTION
@@ -162,75 +162,59 @@ static inline void getSlotNrgHQ(FIXP_DBL *RESTRICT pReal,
FIXP_DBL nrg;
/* qs = 12, 13, 14 */
- slotNrg[0] = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- slotNrg[1] = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- slotNrg[2] = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ slotNrg[0] = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ slotNrg[1] = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ slotNrg[2] = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
/* qs = 15 */
- slotNrg[3] = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ slotNrg[3] = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
/* qs = 16, 17 */
- nrg = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- slotNrg[4] = nrg + ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ nrg = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ slotNrg[4] =
+ nrg + ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
/* qs = 18, 19, 20 */
- nrg = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- nrg += ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- slotNrg[5] = nrg + ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ nrg = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ nrg += ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ slotNrg[5] =
+ nrg + ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
/* qs = 21, 22 */
- nrg = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- slotNrg[6] = nrg + ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ nrg = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ slotNrg[6] =
+ nrg + ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
/* qs = 23, 24 */
if (hybBands > 23) {
- slotNrg[6] += ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- slotNrg[6] += ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ slotNrg[6] += ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ slotNrg[6] += ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
/* qs = 25, 26, 29, 28, 29 */
- nrg = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- nrg += ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- nrg += ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- nrg += ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
- slotNrg[7] = nrg + ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ nrg = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ nrg += ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ nrg += ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ nrg += ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
+ slotNrg[7] =
+ nrg + ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
/* qs = 30 ... min(41,hybBands-1) */
- nrg = ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ nrg = ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
for (qs = 31; qs < hybBands; qs++) {
- nrg += ((fPow2Div2((*pReal++) << maxValSF) +
- fPow2Div2((*pImag++) << maxValSF)) >>
- (SF_FACTOR_SLOT - 1));
+ nrg += ((fPow2Div2((*pReal++) << maxValSF) >> (SF_FACTOR_SLOT - 1)) +
+ (fPow2Div2((*pImag++) << maxValSF) >> (SF_FACTOR_SLOT - 1)));
}
slotNrg[8] = nrg;
} else {
@@ -239,49 +223,22 @@ static inline void getSlotNrgHQ(FIXP_DBL *RESTRICT pReal,
}
}
-static inline INT getMaxValDmx(FIXP_DBL *RESTRICT pReal,
- FIXP_DBL *RESTRICT pImag, INT cplxBands,
- INT hybBands) {
- INT qs, clz;
- FIXP_DBL maxVal = FL2FXCONST_DBL(0.0f);
-
- for (qs = 12; qs < cplxBands; qs++) {
- maxVal |= fAbs(pReal[qs]);
- maxVal |= fAbs(pImag[qs]);
- }
- for (; qs < hybBands; qs++) {
- maxVal |= fAbs(pReal[qs]);
- }
-
- clz = fixMax(0, CntLeadingZeros(maxVal) - 1);
-
- return (clz);
-}
-
-static inline INT getMaxValDryWet(FIXP_DBL *RESTRICT pReal,
- FIXP_DBL *RESTRICT pImag,
- FIXP_DBL *RESTRICT pHybOutputRealDry,
- FIXP_DBL *RESTRICT pHybOutputImagDry,
- FIXP_DBL *RESTRICT pHybOutputRealWet,
- FIXP_DBL *RESTRICT pHybOutputImagWet,
- INT cplxBands, INT hybBands) {
- INT qs, clz;
- FIXP_DBL maxVal = FL2FXCONST_DBL(0.0f);
+static inline void combineDryWet(FIXP_DBL *RESTRICT pReal,
+ FIXP_DBL *RESTRICT pImag,
+ FIXP_DBL *RESTRICT pHybOutputRealDry,
+ FIXP_DBL *RESTRICT pHybOutputImagDry,
+ FIXP_DBL *RESTRICT pHybOutputRealWet,
+ FIXP_DBL *RESTRICT pHybOutputImagWet,
+ INT cplxBands, INT hybBands) {
+ INT qs;
for (qs = 12; qs < cplxBands; qs++) {
- pReal[qs] = pHybOutputRealDry[qs] + pHybOutputRealWet[qs];
- maxVal |= fAbs(pReal[qs]);
- pImag[qs] = pHybOutputImagDry[qs] + pHybOutputImagWet[qs];
- maxVal |= fAbs(pImag[qs]);
+ pReal[qs] = (pHybOutputRealDry[qs] >> 1) + (pHybOutputRealWet[qs] >> 1);
+ pImag[qs] = (pHybOutputImagDry[qs] >> 1) + (pHybOutputImagWet[qs] >> 1);
}
for (; qs < hybBands; qs++) {
- pReal[qs] = pHybOutputRealDry[qs] + pHybOutputRealWet[qs];
- maxVal |= fAbs(pReal[qs]);
+ pReal[qs] = (pHybOutputRealDry[qs] >> 1) + (pHybOutputRealWet[qs] >> 1);
}
-
- clz = fixMax(0, CntLeadingZeros(maxVal) - 1);
-
- return (clz);
}
static inline void slotAmp(FIXP_DBL *RESTRICT slotAmp_dry,
@@ -296,17 +253,17 @@ static inline void slotAmp(FIXP_DBL *RESTRICT slotAmp_dry,
dry = wet = FL2FXCONST_DBL(0.0f);
for (qs = 0; qs < cplxBands; qs++) {
- dry = fAddSaturate(dry, fPow2Div2(pHybOutputRealDry[qs]) +
- fPow2Div2(pHybOutputImagDry[qs]));
- wet = fAddSaturate(wet, fPow2Div2(pHybOutputRealWet[qs]) +
- fPow2Div2(pHybOutputImagWet[qs]));
+ dry = fAddSaturate(dry, fPow2Div2(pHybOutputRealDry[qs] << (1)) +
+ fPow2Div2(pHybOutputImagDry[qs] << (1)));
+ wet = fAddSaturate(wet, fPow2Div2(pHybOutputRealWet[qs] << (1)) +
+ fPow2Div2(pHybOutputImagWet[qs] << (1)));
}
for (; qs < hybBands; qs++) {
- dry = fAddSaturate(dry, fPow2Div2(pHybOutputRealDry[qs]));
- wet = fAddSaturate(wet, fPow2Div2(pHybOutputRealWet[qs]));
+ dry = fAddSaturate(dry, fPow2Div2(pHybOutputRealDry[qs] << (1)));
+ wet = fAddSaturate(wet, fPow2Div2(pHybOutputRealWet[qs] << (1)));
}
- *slotAmp_dry = dry;
- *slotAmp_wet = wet;
+ *slotAmp_dry = dry >> (2 * (1));
+ *slotAmp_wet = wet >> (2 * (1));
}
#if defined(__aarch64__)
@@ -327,11 +284,14 @@ shapeBBEnv(FIXP_DBL *pHybOutputRealDry, FIXP_DBL *pHybOutputImagDry,
}
} else {
for (qs = 0; qs < cplxBands; qs++) {
- pHybOutputRealDry[qs] = fMultDiv2(pHybOutputRealDry[qs], dryFac) << scale;
- pHybOutputImagDry[qs] = fMultDiv2(pHybOutputImagDry[qs], dryFac) << scale;
+ pHybOutputRealDry[qs] = SATURATE_LEFT_SHIFT(
+ fMultDiv2(pHybOutputRealDry[qs], dryFac), scale, DFRACT_BITS);
+ pHybOutputImagDry[qs] = SATURATE_LEFT_SHIFT(
+ fMultDiv2(pHybOutputImagDry[qs], dryFac), scale, DFRACT_BITS);
}
for (; qs < hybBands; qs++) {
- pHybOutputRealDry[qs] = fMultDiv2(pHybOutputRealDry[qs], dryFac) << scale;
+ pHybOutputRealDry[qs] = SATURATE_LEFT_SHIFT(
+ fMultDiv2(pHybOutputRealDry[qs], dryFac), scale, DFRACT_BITS);
}
}
}
@@ -367,7 +327,7 @@ static void extractBBEnv(spatialDec *self, INT inp, INT start, INT channels,
INT shapeActiv = 1;
INT hybBands = fixMin(42, self->hybridBands);
- INT staticScale = self->staticDecScale;
+ INT staticScale = self->staticDecScale + (1);
INT cplxBands;
cplxBands = fixMin(42, self->hybridBands);
@@ -386,15 +346,18 @@ static void extractBBEnv(spatialDec *self, INT inp, INT start, INT channels,
prevChOffs = ch;
pReal = pScratchBuffer;
pImag = pScratchBuffer + 42;
- clz = getMaxValDryWet(
- pReal, pImag, self->hybOutputRealDry__FDK[ch],
- self->hybOutputImagDry__FDK[ch], self->hybOutputRealWet__FDK[ch],
- self->hybOutputImagWet__FDK[ch], cplxBands, hybBands);
+ combineDryWet(pReal, pImag, self->hybOutputRealDry__FDK[ch],
+ self->hybOutputImagDry__FDK[ch],
+ self->hybOutputRealWet__FDK[ch],
+ self->hybOutputImagWet__FDK[ch], cplxBands, hybBands);
+ clz = fMin(getScalefactor(&pReal[12], fMax(0, hybBands - 12)),
+ getScalefactor(&pImag[12], fMax(0, cplxBands - 12)));
} else {
prevChOffs = ch + self->numOutputChannels;
pReal = self->hybInputReal__FDK[ch];
pImag = self->hybInputImag__FDK[ch];
- clz = getMaxValDmx(pReal, pImag, cplxBands, hybBands);
+ clz = fMin(getScalefactor(&pReal[12], fMax(0, hybBands - 12)),
+ getScalefactor(&pImag[12], fMax(0, cplxBands - 12)));
}
partNrg = partNrgPrev = pBBEnvState->partNrgPrev__FDK[prevChOffs];
@@ -411,8 +374,10 @@ static void extractBBEnv(spatialDec *self, INT inp, INT start, INT channels,
SF_FACTOR_SLOT */
}
- slotNrgSF = 2 * (staticScale - clz) + SF_FACTOR_SLOT;
- frameNrgSF = 2 * (staticScale - clz) + SF_FACTOR_SLOT;
+ slotNrgSF = 2 * (staticScale - clz + ((inp == INP_DRY_WET) ? 1 : 0)) +
+ SF_FACTOR_SLOT;
+ frameNrgSF = 2 * (staticScale - clz + ((inp == INP_DRY_WET) ? 1 : 0)) +
+ SF_FACTOR_SLOT;
partNrgSF = fixMax(slotNrgSF - SF_ALPHA1 + 1,
pPartNrgPrevSF[0] - pPartNrgPrev2SF[0] + 1);
@@ -652,14 +617,16 @@ void SpatialDecReshapeBBEnv(spatialDec *self, const SPATIAL_BS_FRAME *frame,
fixMax(3, fixMax(dryFacSF, slotAmpSF)); /* scale is at least with 3
bits to avoid overflows
when calculating dryFac */
- dryFac = dryFac >> (scale - dryFacSF);
- slotAmp_ratio = slotAmp_ratio >> (scale - slotAmpSF);
+ dryFac = dryFac >> fixMin(scale - dryFacSF, DFRACT_BITS - 1);
+ slotAmp_ratio =
+ slotAmp_ratio >> fixMin(scale - slotAmpSF, DFRACT_BITS - 1);
/* limit dryFac */
dryFac = fixMax(
FL2FXCONST_DBL(0.25f) >> (INT)fixMin(2 * scale, DFRACT_BITS - 1),
- fMult(dryFac, slotAmp_ratio) - (slotAmp_ratio >> scale) +
- (dryFac >> scale));
+ fMult(dryFac, slotAmp_ratio) -
+ (slotAmp_ratio >> fixMin(scale, DFRACT_BITS - 1)) +
+ (dryFac >> fixMin(scale, DFRACT_BITS - 1)));
dryFac = fixMin(
FL2FXCONST_DBL(0.50f) >> (INT)fixMin(2 * scale - 3, DFRACT_BITS - 1),
dryFac); /* reduce shift bits by 3, because upper
@@ -673,8 +640,8 @@ void SpatialDecReshapeBBEnv(spatialDec *self, const SPATIAL_BS_FRAME *frame,
/* shaping */
shapeBBEnv(&self->hybOutputRealDry__FDK[ch][6],
- &self->hybOutputImagDry__FDK[ch][6], dryFac, scale, cplxBands,
- hybBands);
+ &self->hybOutputImagDry__FDK[ch][6], dryFac,
+ fixMin(scale, DFRACT_BITS - 1), cplxBands, hybBands);
}
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-02 14:54:42 +0000