| 46ba3676b854acbc69a4c7845f578d4c2886377b |
|
08-Apr-2016 |
Jean-Michel Trivi <jmtrivi@google.com> |
AAC/SBR encoder improvements
* AAC-Encoder
- AAC-ELD core encoder audio quality tuning. Update tuning tables, configure
bitreservoir size and adapt afterburner iteration value.
Modified file(s):
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/pnsparam.cpp
libAACenc/src/qc_main.cpp
- Introduze dead zone quantizer for ELD to improve audio quality at certain
configurations.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/adj_thr.cpp
libAACenc/src/adj_thr.h
libAACenc/src/qc_data.h
libAACenc/src/qc_main.cpp
libAACenc/src/quantize.cpp
libAACenc/src/quantize.h
libAACenc/src/sf_estim.cpp
libAACenc/src/sf_estim.h
- Revise TNS module to improve ELD audio quality.
- Use new window function and separate prediction gain according TNS filters.
- Add missing memory initilization to TNS configuration.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/aacenc_tns.cpp
libAACenc/src/aacenc_tns.h
libAACenc/src/psy_main.cpp
libAACenc/src/tns_func.h
* SBR-Encoder
- Revise frequency resolution calculation and handle differently depending
on number of envelopes and split frames decision.
- Add and adjust ELD SBR tuning tables.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/fram_gen.cpp
libSBRenc/src/fram_gen.h
libSBRenc/src/mh_det.cpp
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/sbr_rom.cpp
libSBRenc/src/tran_det.cpp
- Replace ELD transient detector with fast implementation.
Modified file(s):
libSBRenc/src/env_est.cpp
libSBRenc/src/env_est.h
libSBRenc/src/fram_gen.cpp
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
* FDK-Library
- Introduce generic compare function in tools library.
Modified file(s):
libFDK/include/fixpoint_math.h
libFDK/src/FDK_core.cpp
* SBR-Encoder
- Revise ELD frame splitter to improve bit distribution.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/fram_gen.cpp
libSBRenc/src/fram_gen.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
- Configure amplitude resolution according the tonality of the audio signal.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/nf_est.cpp
libSBRenc/src/nf_est.h
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/ton_corr.cpp
libSBRenc/src/ton_corr.h
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
Change-Id: Ie0672b989a06ee63b50240616b8d1d4b790b6cb2
/external/aac/libAACenc/src/qc_main.cpp
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| e1c78ed73faa51f2c7fcb0c4a17a92be9cc747f5 |
|
05-Apr-2016 |
Jean-Michel Trivi <jmtrivi@google.com> |
SBR/AAC encoder updates, code clean up
* 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
/external/aac/libAACenc/src/qc_main.cpp
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| ef30836651bf059c3120c03dd11e08b6aafdae13 |
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05-Apr-2016 |
Jean-Michel Trivi <jmtrivi@google.com> |
Remove compiler warnings, revised ARM QMF encoder
Bug 8493170
Change-Id: I64d19a8a8059c5a96386b1eaac297fd2469515f8
/external/aac/libAACenc/src/qc_main.cpp
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| fa3eba16446cc8f2f5e2dfc20d86a49dbd37299e |
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30-Aug-2013 |
Jean-Michel Trivi <jmtrivi@google.com> |
Encoder 7.1 support
* 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
/external/aac/libAACenc/src/qc_main.cpp
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| 7ad97579f8ccb843afdb5b184c4b209253839fe3 |
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29-Aug-2013 |
Jean-Michel Trivi <jmtrivi@google.com> |
AAC Encoder low delay quality
* 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
/external/aac/libAACenc/src/qc_main.cpp
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| 4f0d97057c5c640b25518358886f8c47da9fc052 |
|
09-Aug-2013 |
Jean-Michel Trivi <jmtrivi@google.com> |
Disclaimer update, lib version increment
- Update disclaimer in all source files.
- Increment library version in each FDK sub-module.
Bug 9428126
Change-Id: I490b96d4ee472246b01483202b0bb4f1e9c2a5d7
/external/aac/libAACenc/src/qc_main.cpp
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| 381d69840ad3af2259f0b7ef49236f9ee9c76b76 |
|
09-Sep-2012 |
Jean-Michel Trivi <jmtrivi@google.com> |
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
/external/aac/libAACenc/src/qc_main.cpp
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| 2228e360595641dd906bf1773307f43d304f5b2e |
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11-Jul-2012 |
The Android Open Source Project <initial-contribution@android.com> |
Snapshot 2bda038c163298531d47394bc2c09e1409c5d0db
Change-Id: If584e579464f28b97d50e51fc76ba654a5536c54
/external/aac/libAACenc/src/qc_main.cpp
|