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path: root/silk/LPC_analysis_filter.c
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* Converting some silk_assert()s into hardening celt_assert()sJean-Marc Valin2018-03-271-4/+4
| | | | | Only converted the ones that are really sure (not signal-dependent) and that shouldn't add much run-time complexity
* Add FIXED_POINT check if using celt_fir in SILK's LPC analysis filterFelicia Lim2017-01-171-2/+2
| | | | Use of celt_fir remains off by default
* Revise celt_fir_c() to not pass in argument "mem"Linfeng Zhang2017-01-171-5/+1
| | | | | | | | The "mem" in celt_fir_c() either is contained in the head of input "x" in reverse order already, or can be easily attached to the head of "x" before calling the function. Removing argument "mem" can eliminate the redundant buffer copies inside. Update celt_fir_sse4_1() accordingly.
* Disabling the use of celt_fir() in silk_LPC_analysis_filter() by defaultJean-Marc Valin2016-07-251-2/+9
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* Cisco optimization for x86 & fixed pointxiangmingzhu2014-10-031-2/+4
| | | | | | | | | | 1. Only for fixed point on x86 platform (32bit and 64bit, uses SIMD intrinsics up to SSE4.2) 2. Use "configure --enable-fixed-point --enable-intrinsics" to enable optimization, default is disabled. 3. Official test cases are verified and passed. Signed-off-by: Timothy B. Terriberry <tterribe@xiph.org>
* Remove trailing whitespace from the license headers.Ralph Giles2013-09-161-1/+1
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* Implements fixed-point silk_LPC_analysis_filter() in terms of celt_fir()Jean-Marc Valin2013-08-291-1/+22
| | | | | Saves 2.5% on ARM without any asm. The float build still uses the old code because celt_fir() then becomes a float function.
* Convert quotes in license headers to ASCII.Timothy B. Terriberry2013-05-191-1/+1
| | | | | | Since the last patch originally had them mangled (presumably by mailer, http server, or something else), let's just get rid of them.
* License update using the IETF Trust flavour of the BSD on the Silk codeJean-Marc Valin2012-04-201-17/+17
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* SILK fixes following last codec WG meetingKoen Vos2011-12-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | decoder: - fixed incorrect scaling of filter states for the smallest quantization step sizes - NLSF2A now limits the prediction gain of LPC filters encoder: - increased damping of LTP coefficients in LTP analysis - increased white noise fraction in noise shaping LPC analysis - introduced maximum total prediction gain. Used by Burg's method to exit early if prediction gain is exceeded. This improves packet loss robustness and numerical robustness in Burg's method - Prefiltered signal is now in int32 Q10 domain, from int16 Q0 - Increased max number of iterations in CBR gain control loop from 5 to 6 - Removed useless code from LTP scaling control - Optimization: smarter LPC loop unrolling - Switched default win32 compile mode to be floating-point resampler: - made resampler have constant delay of 0.75 ms; removed delay compensation from silk code. - removed obsolete table entries (~850 Bytes) - increased downsampling filter order from 16 to 18/24/36 (depending on frequency ratio) - reoptimized filter coefficients
* Reformatting changes with an update to the MSVC project filesKoen Vos2011-10-281-7/+7
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* Allow wrap-around in silk_LPC_analysis_filter()Jean-Marc Valin2011-10-271-8/+10
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* Removed all the silk_ prefixes in source file names (not symbols)Jean-Marc Valin2011-09-161-0/+83
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* Moved all SILK source code to the silk/ directoryJean-Marc Valin2011-04-281-6/+0
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* Relying on SILK for the switching decisionsJean-Marc Valin2011-04-281-5/+5
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* SILK makefile updateJean-Marc Valin2011-04-271-5/+5
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* Changing the SILK bandwidth only when there's no speechJean-Marc Valin2011-04-271-29/+5
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* SILK updateKoen Vos2011-04-271-5/+29
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* Project files updateJean-Marc Valin2011-03-181-8/+5
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* DTX fixJean-Marc Valin2011-03-171-5/+8
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* Support for glitchles mode switchingJean-Marc Valin2011-03-071-5/+5
| | | | | | Uses a 5ms redundant CELT frame embedded into the SILK or hybrid packet to handle the switching. It's still possible to use the PLC-based method when no redundant packet is included.
* SILK bugfixJean-Marc Valin2011-03-031-5/+5
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* SILK updateJean-Marc Valin2011-03-021-17/+5
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* SILK/CELT updateJean-Marc Valin2011-02-281-10/+10
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* SILK updateJean-Marc Valin2011-02-171-5/+17
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* fix make distJean-Marc Valin2011-02-151-5/+5
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* missing filesJean-Marc Valin2011-02-141-8/+5
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* SILK and CELT updatesJean-Marc Valin2011-02-141-5/+8
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* Update for in-band FECKoen Vos2011-02-141-9/+5
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* Update Opus range coder due to CELT refactoring.Timothy B. Terriberry2011-02-031-5/+9
| | | | | The byte buffer is now part of the range coder struct itself, and rangeenc.c and rangedec.c have gone away.
* Build fixesJean-Marc Valin2011-02-031-5/+5
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* Testing the range coder final stateKoen Vos2011-02-031-5/+5
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* SILK updateJean-Marc Valin2011-02-021-5/+5
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* SILK updateJean-Marc Valin2011-02-021-5/+5
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* SILK update (fixing segfault) and MSVS fixJean-Marc Valin2011-02-021-5/+5
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* SILK updateJean-Marc Valin2011-02-021-5/+5
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* Disabling debugJean-Marc Valin2011-01-311-5/+5
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* Adding missing SILK files to the buildJean-Marc Valin2010-11-131-5/+5
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* Updated to follow changes in SILK APIJean-Marc Valin2010-11-121-5/+5
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* SILK build updateJean-Marc Valin2010-07-081-5/+5
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* Build updateJean-Marc Valin2010-07-081-5/+5
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* autotools-based build systemJean-Marc Valin2010-07-081-5/+5
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* Adds a _ctl() control API to the encoder and decoderJean-Marc Valin2010-07-061-5/+5
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* Fixing a high bit-rate bug in SILK -- now scales well above 64 kb/sJean-Marc Valin2010-07-051-5/+5
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* silk update (ec_enc_done())Jean-Marc Valin2010-07-041-5/+5
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* SILK update (interface for using the CELT range coder)Jean-Marc Valin2010-07-041-5/+5
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* gitignore filesJean-Marc Valin2010-07-031-5/+5
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* SILK updateJean-Marc Valin2010-06-301-5/+5
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* Updated SILK versionJean-Marc Valin2010-06-301-4/+5
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* Added SILK submoduleJean-Marc Valin2010-06-291-0/+5
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