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authorMartin Storsjo <martin@martin.st>2012-11-01 11:08:03 +0200
committerMartin Storsjo <martin@martin.st>2012-11-01 11:08:03 +0200
commit54dfe1ec6972ca0d56dcb671448f84fea5e37e35 (patch)
tree5d26aa077f3aa32d3e5113546abc5a4219332640 /libSBRdec/src/sbrdec_drc.cpp
parentfea3c1d0ffaf5975bb15462e11edf9c7a664890d (diff)
parent6ab36997af5d5acda4f21d33031f4e45c85f96b7 (diff)
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Merge remote-tracking branch 'aosp/jb-mr1-release' into master
Conflicts: libAACenc/src/band_nrg.cpp libAACenc/src/grp_data.cpp libSBRenc/src/env_est.cpp
Diffstat (limited to 'libSBRdec/src/sbrdec_drc.cpp')
-rw-r--r--libSBRdec/src/sbrdec_drc.cpp37
1 files changed, 26 insertions, 11 deletions
diff --git a/libSBRdec/src/sbrdec_drc.cpp b/libSBRdec/src/sbrdec_drc.cpp
index ce5247a..7497b66 100644
--- a/libSBRdec/src/sbrdec_drc.cpp
+++ b/libSBRdec/src/sbrdec_drc.cpp
@@ -115,17 +115,17 @@ void sbrDecoder_drcInitChannel (
}
for (band = 0; band < (64); band++) {
- hDrcData->prevFact_mag[band] = (FIXP_DBL)MAXVAL_DBL /*FL2FXCONST_DBL(1.0f)*/;
+ hDrcData->prevFact_mag[band] = FL2FXCONST_DBL(0.5f);
}
for (band = 0; band < SBRDEC_MAX_DRC_BANDS; band++) {
- hDrcData->currFact_mag[band] = (FIXP_DBL)MAXVAL_DBL /*FL2FXCONST_DBL(1.0f)*/;
- hDrcData->nextFact_mag[band] = (FIXP_DBL)MAXVAL_DBL /*FL2FXCONST_DBL(1.0f)*/;
+ hDrcData->currFact_mag[band] = FL2FXCONST_DBL(0.5f);
+ hDrcData->nextFact_mag[band] = FL2FXCONST_DBL(0.5f);
}
- hDrcData->prevFact_exp = 0;
- hDrcData->currFact_exp = 0;
- hDrcData->nextFact_exp = 0;
+ hDrcData->prevFact_exp = 1;
+ hDrcData->currFact_exp = 1;
+ hDrcData->nextFact_exp = 1;
hDrcData->numBandsCurr = 0;
hDrcData->numBandsNext = 0;
@@ -238,7 +238,7 @@ void sbrDecoder_drcApplySlot (
}
else {
if (j >= offset[hDrcData->drcInterpolationSchemeCurr - 1]) {
- alphaValue = FL2FXCONST_DBL(1.0f);
+ alphaValue = (FIXP_DBL)MAXVAL_DBL;
}
}
}
@@ -262,7 +262,7 @@ void sbrDecoder_drcApplySlot (
}
else {
if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) {
- alphaValue = FL2FXCONST_DBL(1.0f);
+ alphaValue = (FIXP_DBL)MAXVAL_DBL;
}
}
@@ -301,7 +301,7 @@ void sbrDecoder_drcApplySlot (
}
else {
if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) {
- alphaValue = FL2FXCONST_DBL(1.0f);
+ alphaValue = (FIXP_DBL)MAXVAL_DBL;
}
}
}
@@ -322,7 +322,7 @@ void sbrDecoder_drcApplySlot (
for (band = 0; band < (int)numBands; band++) {
int bottomQmf, topQmf;
- FIXP_DBL drcFact_mag = FL2FXCONST_DBL(1.0f);
+ FIXP_DBL drcFact_mag = (FIXP_DBL)MAXVAL_DBL;
topMdct = (bandTop[band]+1) << 2;
@@ -361,7 +361,13 @@ void sbrDecoder_drcApplySlot (
}
/* interpolate */
- drcFact_mag = fMult(alphaValue, drcFact2_mag) + fMult((FL2FXCONST_DBL(1.0f) - alphaValue), drcFact1_mag);
+ if (alphaValue == (FIXP_DBL)0) {
+ drcFact_mag = drcFact1_mag;
+ } else if (alphaValue == (FIXP_DBL)MAXVAL_DBL) {
+ drcFact_mag = drcFact2_mag;
+ } else {
+ drcFact_mag = fMult(alphaValue, drcFact2_mag) + fMult(((FIXP_DBL)MAXVAL_DBL - alphaValue), drcFact1_mag);
+ }
/* apply scaling */
qmfRealSlot[bin] = fMult(qmfRealSlot[bin], drcFact_mag);
@@ -481,6 +487,15 @@ void sbrDecoder_drcApply (
int col;
int maxShift = 0;
+ if (hDrcData == NULL) {
+ return;
+ }
+ if ( (hDrcData->enable == 0)
+ || ((hDrcData->numBandsCurr == 0) && (hDrcData->numBandsNext == 0))
+ ) {
+ return; /* Avoid changing the scaleFactor even though the processing is disabled. */
+ }
+
/* get max scale factor */
if (hDrcData->prevFact_exp > maxShift) {
maxShift = hDrcData->prevFact_exp;