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authorJean-Michel Trivi <jmtrivi@google.com>2012-09-09 11:48:51 -0700
committerJean-Michel Trivi <jmtrivi@google.com>2012-09-09 11:52:09 -0700
commit381d69840ad3af2259f0b7ef49236f9ee9c76b76 (patch)
tree059754bb7c5ff151506ac52a2962d532a180b5bc /libAACenc/src/grp_data.cpp
parentfef220869b4e5bf9241369d3379b389136c2f174 (diff)
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Bug fixes in AAC decoder, AAC encoder, FDK library
Latest code drop from Fraunhofer: * AAC-Decoder - Expanded AAC-LD/ELD decoder TNS max band tables to avoid wrong data access for sampling rates <22kHz and >48kHz. Modified file(s): libAACdec\src\aacdec_tns.cpp libAACdec\src\aac_rom.h libAACdec\src\aac_rom.cpp - Fixed ELD synthesis QMF filterbank scaling for downsampled SBR. Modified file(s): libFDK\src\qmf.cpp * AAC-Encoder - Fixed bit rate limiting for lower limit as introduced in the Delivery 2012-05-11. Modified file(s): libAACenc\include\aacenc_lib.h libAACenc\src\aacenc.h libAACenc\src\aacenc.cpp libSBRenc\src\sbr_rom.h libSBRenc\src\sbr_rom.cpp - Allow negative prediction gain as meaning that there is no coding gain. Make use of scaleValueSaturate in gauss window calculation. Modified file(s): libAACenc\src\aacenc_tns.cpp - Added energy saturation to prevent overflow in short blocks. Modified file(s): libAACenc\src\grp_data.cpp - Perform scalefactor adaption in case quantized lines are out of valid range. Modified file(s): libAACenc\src\quantize.cpp - Interrupt quantization loop when no spectral data is available. Adjustments in bitreservoir adaption. Modified file(s): libAACenc\src\qc_main.cpp - Indroduced dynamic scaling in none missing harmonic energy lowering compensation. Modified file(s): libSBRenc\src\env_est.cpp * FDK-Library - Fixed saturation for negative values in scaleValueSaturate. Modified file(s): libFDK\include\scale.h Change-Id: If830ea65caef6b5554281e4b7a77a8b2e08825ce
Diffstat (limited to 'libAACenc/src/grp_data.cpp')
-rw-r--r--libAACenc/src/grp_data.cpp12
1 files changed, 8 insertions, 4 deletions
diff --git a/libAACenc/src/grp_data.cpp b/libAACenc/src/grp_data.cpp
index 03d4976..4355295 100644
--- a/libAACenc/src/grp_data.cpp
+++ b/libAACenc/src/grp_data.cpp
@@ -94,6 +94,10 @@ amm-info@iis.fraunhofer.de
* this routine does not work in-place
*/
+static inline FIXP_DBL nrgAddSaturate(const FIXP_DBL a, const FIXP_DBL b) {
+ return ( (a>=(FIXP_DBL)MAXVAL_DBL-b) ? (FIXP_DBL)MAXVAL_DBL : (a + b) );
+}
+
void
FDKaacEnc_groupShortData(FIXP_DBL *mdctSpectrum, /* in-out */
SFB_THRESHOLD *sfbThreshold, /* in-out */
@@ -177,7 +181,7 @@ FDKaacEnc_groupShortData(FIXP_DBL *mdctSpectrum, /* in-out
FIXP_DBL thresh = sfbThreshold->Short[wnd][sfb];
for (j=1; j<groupLen[grp]; j++)
{
- thresh += sfbThreshold->Short[wnd+j][sfb];
+ thresh = nrgAddSaturate(thresh, sfbThreshold->Short[wnd+j][sfb]);
}
sfbThreshold->Long[i++] = thresh;
}
@@ -195,7 +199,7 @@ FDKaacEnc_groupShortData(FIXP_DBL *mdctSpectrum, /* in-out
FIXP_DBL energy = sfbEnergy->Short[wnd][sfb];
for (j=1; j<groupLen[grp]; j++)
{
- energy += sfbEnergy->Short[wnd+j][sfb];
+ energy = nrgAddSaturate(energy, sfbEnergy->Short[wnd+j][sfb]);
}
sfbEnergy->Long[i++] = energy;
}
@@ -213,7 +217,7 @@ FDKaacEnc_groupShortData(FIXP_DBL *mdctSpectrum, /* in-out
FIXP_DBL energy = sfbEnergyMS->Short[wnd][sfb];
for (j=1; j<groupLen[grp]; j++)
{
- energy += sfbEnergyMS->Short[wnd+j][sfb];
+ energy = nrgAddSaturate(energy, sfbEnergyMS->Short[wnd+j][sfb]);
}
sfbEnergyMS->Long[i++] = energy;
}
@@ -231,7 +235,7 @@ FDKaacEnc_groupShortData(FIXP_DBL *mdctSpectrum, /* in-out
FIXP_DBL energy = sfbSpreadEnergy->Short[wnd][sfb];
for (j=1; j<groupLen[grp]; j++)
{
- energy += sfbSpreadEnergy->Short[wnd+j][sfb];
+ energy = nrgAddSaturate(energy, sfbSpreadEnergy->Short[wnd+j][sfb]);
}
sfbSpreadEnergy->Long[i++] = energy;
}