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path: root/silk/resampler_structs.h
AgeCommit message (Collapse)Author
2013-09-17Remove trailing whitespace from the license headers.Ralph Giles
2013-05-20Convert quotes in license headers to ASCII.Timothy B. Terriberry
Since the last patch originally had them mangled (presumably by mailer, http server, or something else), let's just get rid of them.
2013-05-08Fix several memory errors in the SILK resampler.Timothy B. Terriberry
1) The memcpy's were using sizeof(opus_int32), but the type of the local buffer was opus_int16. 2) Because the size was wrong, this potentially allowed the source and destination regions of the memcpy overlap. I _believe_ that nSamplesIn is at least fs_in_khZ, which is at least 8. Since RESAMPLER_ORDER_FIR_12 is only 8, I don't think that's a problem once you fix the type size. 3) The size of the buffer used RESAMPLER_MAX_BATCH_SIZE_IN, but the data stored in it was actually _twice_ the input batch size (nSamplesIn<<1). Because this never blew up in testing, I suspect that in practice the batch sizes are reasonable enough that none of these things was ever a problem, but proving that seems non-obvious. This patch just converts the whole thing to use CELT's vararrays. This fixes the buffer size problems (since we allocate a buffer with the actual size we use) and gets these large buffers off the stack on devices using the pseudo-stack. It also fixes the memcpy problems by changing the sizeof to opus_int16. It turns out sFIR, which saved state between calls, was being used elsewhere as opus_int32, so this converts it to a union to make this sharing explicit.
2012-04-21License update using the IETF Trust flavour of the BSD on the Silk codeJean-Marc Valin
2011-12-13SILK fixes following last codec WG meetingKoen Vos
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
2011-10-29Reformatting changes with an update to the MSVC project filesKoen Vos
2011-09-28More resampler cleanups.Gregory Maxwell
2011-09-28Eliminate function pointers from the resampler.Gregory Maxwell
2011-09-16Removed all the silk_ prefixes in source file names (not symbols)Jean-Marc Valin
2011-04-29Moved all SILK source code to the silk/ directoryJean-Marc Valin
2011-04-28Relying on SILK for the switching decisionsJean-Marc Valin
2011-04-28SILK makefile updateJean-Marc Valin
2011-04-27Changing the SILK bandwidth only when there's no speechJean-Marc Valin
2011-04-27SILK updateKoen Vos
2011-03-18Project files updateJean-Marc Valin
2011-03-17DTX fixJean-Marc Valin
2011-03-08Support for glitchles mode switchingJean-Marc Valin
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.
2011-03-04SILK bugfixJean-Marc Valin
2011-03-02SILK updateJean-Marc Valin
2011-03-01SILK/CELT updateJean-Marc Valin
2011-02-18SILK updateJean-Marc Valin
2011-02-15fix make distJean-Marc Valin
2011-02-15missing filesJean-Marc Valin
2011-02-15SILK and CELT updatesJean-Marc Valin
2011-02-14Update for in-band FECKoen Vos
2011-02-04Update Opus range coder due to CELT refactoring.Timothy B. Terriberry
The byte buffer is now part of the range coder struct itself, and rangeenc.c and rangedec.c have gone away.
2011-02-03Build fixesJean-Marc Valin
2011-02-03Testing the range coder final stateKoen Vos
2011-02-03SILK updateJean-Marc Valin
2011-02-03SILK updateJean-Marc Valin
2011-02-03SILK update (fixing segfault) and MSVS fixJean-Marc Valin
2011-02-02SILK updateJean-Marc Valin
2011-02-01Disabling debugJean-Marc Valin
2010-11-13Adding missing SILK files to the buildJean-Marc Valin
2010-11-12Updated to follow changes in SILK APIJean-Marc Valin
2010-07-09SILK build updateJean-Marc Valin
2010-07-08Build updateJean-Marc Valin
2010-07-08autotools-based build systemJean-Marc Valin
2010-07-06Adds a _ctl() control API to the encoder and decoderJean-Marc Valin
2010-07-06Fixing a high bit-rate bug in SILK -- now scales well above 64 kb/sJean-Marc Valin
2010-07-05silk update (ec_enc_done())Jean-Marc Valin
2010-07-04SILK update (interface for using the CELT range coder)Jean-Marc Valin
2010-07-03gitignore filesJean-Marc Valin
2010-06-30SILK updateJean-Marc Valin
2010-06-30Updated SILK versionJean-Marc Valin
2010-06-30Added SILK submoduleJean-Marc Valin
    generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 04:04:06 +0300