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* SBR-Encoder
- Prevent noise level overflow in noise floor detection.
- Saturate threshold calculation in transient detection.
Modified file(s):
libSBRenc/src/nf_est.cpp
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/tran_det.cpp
* AAC-Encoder
- Expand input data range of GetInvInt() function. There was an encoder
assert observed in non-default bitrate configuration.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/intensity.cpp
libFDK/include/fixpoint_math.h
libFDK/src/FDK_core.cpp
libFDK/src/FDK_tools_rom.cpp
- Make sure that the encoder is stable with regard to very low audio bandwidth
confguration parameter value.
- Fix lowdelay blending for low audio bandwidth.
Modified file(s):
libAACenc/src/aacenc.cpp
libAACenc/src/aacenc_lib.cpp
libAACenc/src/adj_thr.cpp
libAACenc/src/psy_configuration.cpp
libAACenc/src/psy_main.cpp
- Disable pseudo surround flag in case metadata matrix mixdown index is
present in program config element.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
- Enable variable bitrate mode in encoder api.
- Add AACENC_PEAK_BITRATE parameter to encoder api.
- Add AACENC_AUDIOMUXVER parameter to encoder api.
Modified file(s):
libAACenc/include/aacenc_lib.h
libAACenc/src/aacenc.cpp
libAACenc/src/aacenc.h
libAACenc/src/aacenc_lib.cpp
libAACenc/src/qc_main.cpp
libMpegTPEnc/src/tpenc_latm.cpp
libMpegTPEnc/src/version
* FDK-Sources
- Code clean up. Remove unneeded pseudo audio object types and transport types.
Modified file(s):
libAACdec/src/aacdecoder.cpp
libAACdec/src/aacdecoder_lib.cpp
libAACenc/include/aacenc_lib.h
libAACenc/src/aacenc.cpp
libAACenc/src/aacenc_lib.cpp
libFDK/src/FDK_tools_rom.cpp
libMpegTPDec/src/tpdec_lib.cpp
libMpegTPDec/src/version
libMpegTPEnc/src/tpenc_latm.cpp
libMpegTPEnc/src/version
libSBRdec/src/sbrdecoder.cpp
libSBRenc/src/sbr_encoder.cpp
libSYS/include/FDK_audio.h
libSYS/src/genericStds.cpp
Change-Id: I807a53cb7f48c9ee7563cb8da1d0c52221576ca6
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Bug 8493170
Change-Id: I64d19a8a8059c5a96386b1eaac297fd2469515f8
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Building __DATE__/__TIME__ into the binaries means that every build will
create different binaries, even if all the sources are identical. This
also means that any libraries including this one will need to be patched
during every OTA.
Nothing appears to use the build_date/build_time fields, so just replace
them with empty strings.
Bug: 24204119
Change-Id: I9543eb388a1e8ab9284df9035a62fc8942cdc082
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* AAC-Encoder
- Add 7.1 rear surround and 7.1 front center support to supported encoder
channel modes. Change max channels from 6 to 8 and add 7.1 configuration
to bandwidth and channel mapping functions.
Modified file(s):
libAACenc\include\aacenc_lib.h
libAACenc\src\aacEnc_ram.cpp
libAACenc\src\aacEnc_ram.h
libAACenc\src\aacenc.cpp
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\bitenc.cpp
libAACenc\src\channel_map.cpp
libAACenc\src\interface.h
libAACenc\src\metadata_compressor.cpp
libAACenc\src\psy_main.cpp
libAACenc\src\psy_main.h
libAACenc\src\qc_data.h
libAACenc\src\qc_main.cpp
libAACenc\src\qc_main.h
* SBR-Encoder
- Support up to 7.1 audio channels. Changed max channels from 6 to 8.
Modified file(s):
libSBRenc\include\sbr_encoder.h
libSBRenc\src\sbr.h
libSBRenc\src\sbr_encoder.cpp
libSBRenc\src\sbr_ram.cpp
* Transport-Encoder
- Add 7.1 channel configuration to audio specific config writer in
transport encoder library.
Modified file(s):
libMpegTPEnc\src\tpenc_asc.cpp
libMpegTPEnc\src\version
* SYS-Library
- Add 7.1 channel modes to CHANNEL_MODE description.
Modified file(s):
libSYS\include\FDK_audio.h
libSYS\src\genericStds.cpp
Bug 9428126
Change-Id: Ide53583aa8e03df4537b98db80740dfe0e7a9e0f
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* AAC-Encoder
- Introduce ELD auto configurator to get predefined configuration at given
bitrate and sampling rate. The configurator selects SBR on/off and if SBR
enabled distinguishes between dualrate and downsampled SBR. In default
configuration the ELD auto configurator is enabled.
Modified file(s):
libAACenc\include\aacenc_lib.h
libAACenc\src\aacenc_lib.cpp
Bug 9428126
Change-Id: I01acc9c37e57c4154b3a818d496d538b7f8b227d
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* AAC-Encoder
- Revise explicit signaling method which is required for downsampled SBR.
The parameter is optional and default configuration is implicit signaling
for dualrate SBR as before. In case of downsampled SBR and HE-AAC explicit
signaling is configured as default.
Modified file(s):
documentation\aacEncoder.pdf
libAACenc\include\aacenc_lib.h
libAACenc\src\aacenc_lib.cpp
libMpegTPEnc\src\tpenc_asc.cpp
libMpegTPEnc\src\version
libSYS\include\FDK_audio.h
libSYS\src\genericStds.cpp
Bug 9428126
Change-Id: I35138140346f17384d109ee5829be9ea5bab80fc
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* AAC-Encoder
- Introduce optional AACENC_SBR_RATIO encoder API parameter to configure
dualrate or downsampled SBR explicitely. ELD makes use of downsampled SBR
in default configuration.
Modified file(s):
documentation\aacEncoder.pdf
libAACenc\include\aacenc_lib.h
libAACenc\src\aacenc.h
libAACenc\src\aacenc_lib.cpp
* SBR-Encoder
- Implement downsampled SBR feature.
- Revise sbr tuning parameter selection.
Modified file(s):
libSBRenc\include\sbr_encoder.h
libSBRenc\src\bit_sbr.h
libSBRenc\src\env_est.cpp
libSBRenc\src\mh_det.cpp
libSBRenc\src\nf_est.cpp
libSBRenc\src\ps_main.cpp
libSBRenc\src\sbr.h
libSBRenc\src\sbr_def.h
libSBRenc\src\sbr_encoder.cpp
libSBRenc\src\sbr_rom.cpp
libSBRenc\src\sbr_rom.h
libSBRenc\src\sbrenc_freq_sca.cpp
libSBRenc\src\sbrenc_freq_sca.h
libSBRenc\src\ton_corr.cpp
Bug 9428126
Change-Id: I731720a10829272acaaf70b84525df00a09ff3d2
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* AAC-Encoder
- Revise bit distribution for lowdelay configuration to improve encoder
audio quality.
- Adjust lowdelay bitreservoir for low bitreservoir configuration.
Modified file(s):
libAACenc\src\aacEnc_ram.cpp
libAACenc\src\aacenc.cpp
libAACenc\src\aacenc_lib.cpp
libAACenc\src\aacenc_tns.cpp
libAACenc\src\adj_thr.cpp
libAACenc\src\adj_thr.h
libAACenc\src\block_switch.cpp
libAACenc\src\block_switch.h
libAACenc\src\interface.h
libAACenc\src\psy_main.cpp
libAACenc\src\qc_data.h
libAACenc\src\qc_main.cpp
* FDK-Library
- Increase the accuracy in CalcInvLdData() calculation which improves the
encoder audio quality.
Modified file(s):
libFDK\src\fixpoint_math.cpp
Bug 9428126
Change-Id: I302d7f4c3aeccf79e1b85f20e18a31e6e2b10544
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AAC-Encoder
- Introduce metadata support for parametric stereo audio object type.
Write metadata matrix mixdown coefficient only for channel config 5 and 6.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
- Revise metadata encoder downmix gain and fix matrix mixdown coefficient.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/metadata_compressor.cpp
libMpegTPEnc/src/tpenc_asc.cpp
libMpegTPEnc/src/tpenc_lib.cpp
libMpegTPEnc/src/version
Bug 9428126
Change-Id: I87f5f1a1fdddd8223187aa0f9dc733e0ecc3e7e4
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AAC encoder: Connect SBR and PS header repetition rate with AACENC_HEADER_PERIOD
parameter of the encoder API.
Bug 9428126
Change-Id: Ia1ab965de9eaa2ac229d0c395a337cbd4d20cba1
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AAC encoder: Make the bit rate limiting functionality more stable for multichannel
configurations where element bit rate for SBR can differ significantly.
Bug 9428126
Change-Id: I35b134c5b3c160a8f5a16b4314782b731fe49cd8
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SBR encoder: Introduce coupling energy ratio limitation to prevent undesirable SBR band
amplification while decoding.
Bug 9428126
Change-Id: I18a77cd1a178fff7531b490779a29a0df7d993af
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AAC encoder: Prevent illegal intensity values delta coding at short blocks.
Bug 9428126
Change-Id: Ic287b86f3229022740f2317ea74aabe612de5e6b
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AAC Encoder: Saturate quantizer shift value to prevent
undefined behaviour.
In very rare cases the shift value 'totalShift = (16-4)-(3*(totalShift>>2))'
can be greater than accu data width. If you apply a shift with more then
31 bit the result depends on the architecture and is not defined in C.
For certain platforms zeros are shifted in. That would be our desired behaviour.
On other platforms the shift will be applied as modulo. For example >>34
would be applied as >>2. To prevent this discrepancy the shift value
is limited/saturated to DFRACT_BITS-1. 'accu >>= fixMin(totalShift,DFRACT_BITS-1)'.
Bug 9428126
Change-Id: I27177654c4dc22cf899bc35dad9cdd040dccb02d
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* AAC-Encoder
- Remove source snippets related to unsupported frame length of 960.
- Adjust minBits initialization for disabled VBR configuration.
Modified file(s):
libAACenc/src/aacenc.h
libAACenc/src/aacenc_lib.cpp
libAACenc/src/aacenc_tns.cpp
libAACenc/src/bandwidth.cpp
libAACenc/src/psy_const.h
libAACenc/src/transform.h
- Revise encoder parameter restrictions: "Error Resilient(ER) AAC Low Complexity"
is not supported. Where the AAC part of the FDK encoder threw an
initialization error, now the aacEncoder_SetParam() returns an error
before initialization if the application tries to configure this
audio object type.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
* SYS-Library
- Portability fix for Mingw32.
Modified file(s):
libSYS/include/machine_type.h
- Minor changes.
Modified file(s):
libSYS/include/wav_file.h
libSYS/src/wav_file.cpp
libSYS/src/cmdl_parser.cpp
libSYS/src/genericStds.cpp
Bug 9428126
Change-Id: I9fa44923d34f033d0dc607f2b85abacb8a85eb61
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- Update disclaimer in all source files.
- Increment library version in each FDK sub-module.
Bug 9428126
Change-Id: I490b96d4ee472246b01483202b0bb4f1e9c2a5d7
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From Fraunhofer:
* AAC Decoder
- Stick to the written MPEG standard instead of the MPEG reference software
in terms of reference level normalization. Always set the program reference
level equal to the target level. This disables level normalization using a
default level for streams without embedded metadata.
Modified file(s):
libAACdec\src\aacdec_drc.cpp
- Fix downmix channel assignment when using a WAV output channel ordering.
Modified file(s):
libPCMutils\src\pcmutils_lib.cpp
- Retain signal accuracy and prevent LSB alteration when no level correction
needs to be done.
Modified file(s):
libAACdec\src\aacdec_drc.h
libAACdec\src\aacdec_drc.cpp
libSBRdec\src\sbrdecoder.cpp
libSBRdec\src\sbr_dec.cpp
libSBRdec\src\sbrdec_drc.cpp
- Align metadata processing with reference implementation.
Modified file(s):
libAACdec\src\aacdec_drc.h
libAACdec\src\aacdecoder.cpp
* AAC-Encoder
- Prevent potential overflow in energy calculation after TNS processing.
Modified file(s):
libAACenc\src\band_nrg.cpp
- Added saturation for number of relevant lines which are used in pe
calculation.
Modified file(s):
libAACenc\src\line_pe.cpp
- Removed obsolete files.
Deleded file(s):
libAACenc\src\tns_param.h
libAACenc\src\tns_param.cpp
* FDK-Library
- Added x86 Count Leading Zeros intrinsic.
Modified file(s):
libFDK\include\clz.h
Added file(s):
libFDK\include\x86\clz_x86.h
- Fixed compilation for MIPS GCC-4.4 and higher.
Modified file(s):
libFDK\include\mips\cplx_mul.h
libFDK\include\mips\fixmul_mips.h
Change-Id: I4be65f07f88d412224c7fddc3f054e8f451176cc
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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
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Shifting by more than (or equal to) the variable length is
undefined in C.
This caused the quantized spectrum values to go out of range,
triggering asserts later.
Change-Id: If81b6c8caa7b9c75941ad9d280b686d2069c968c
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Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54
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