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Bug fixes in AAC decoder, AAC encoder, FDK library

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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
This commit is contained in:
Jean-Michel Trivi
2012-09-09 11:48:51 -07:00
parent fef220869b
commit 381d69840a
28 changed files with 4487 additions and 4583 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
libFDK/include/scale.h
View File

@@ -148,12 +148,20 @@ FIXP_DBL scaleValueSaturate(
{
if(scalefactor > 0) {
if (fNorm(value) < scalefactor && value != (FIXP_DBL)0) {
return (FIXP_DBL)MAXVAL_DBL;
if (value > (FIXP_DBL)0) {
return (FIXP_DBL)MAXVAL_DBL;
} else {
return (FIXP_DBL)MINVAL_DBL;
}
} else {
return (value<<scalefactor);
}
} else {
if (-(DFRACT_BITS-1) > scalefactor) {
return (FIXP_DBL)0;
} else {
return (value>>(-scalefactor));
}
}
}
#endif