| 46ba3676b854acbc69a4c7845f578d4c2886377b |
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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/libSBRenc/src/tran_det.cpp
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| e1c78ed73faa51f2c7fcb0c4a17a92be9cc747f5 |
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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/libSBRenc/src/tran_det.cpp
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| 4f0d97057c5c640b25518358886f8c47da9fc052 |
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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/libSBRenc/src/tran_det.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/libSBRenc/src/tran_det.cpp
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