mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 22:55:23 +00:00
124 lines
5.0 KiB
Plaintext
124 lines
5.0 KiB
Plaintext
1.3.0 2012-07-18
|
|
removed non-standard malloc.h from kiss_fft.h
|
|
|
|
moved -lm to end of link line
|
|
|
|
checked various return values
|
|
|
|
converted python Numeric code to NumPy
|
|
|
|
fixed test of int32_t on 64 bit OS
|
|
|
|
added padding in a couple of places to allow SIMD alignment of structs
|
|
|
|
1.2.9 2010-05-27
|
|
threadsafe ( including OpenMP )
|
|
|
|
first edition of kissfft.hh the C++ template fft engine
|
|
|
|
1.2.8
|
|
Changed memory.h to string.h -- apparently more standard
|
|
|
|
Added openmp extensions. This can have fairly linear speedups for larger FFT sizes.
|
|
|
|
1.2.7
|
|
Shrank the real-fft memory footprint. Thanks to Galen Seitz.
|
|
|
|
1.2.6 (Nov 14, 2006) The "thanks to GenArts" release.
|
|
Added multi-dimensional real-optimized FFT, see tools/kiss_fftndr
|
|
Thanks go to GenArts, Inc. for sponsoring the development.
|
|
|
|
1.2.5 (June 27, 2006) The "release for no good reason" release.
|
|
Changed some harmless code to make some compilers' warnings go away.
|
|
Added some more digits to pi -- why not.
|
|
Added kiss_fft_next_fast_size() function to help people decide how much to pad.
|
|
Changed multidimensional test from 8 dimensions to only 3 to avoid testing
|
|
problems with fixed point (sorry Buckaroo Banzai).
|
|
|
|
1.2.4 (Oct 27, 2005) The "oops, inverse fixed point real fft was borked" release.
|
|
Fixed scaling bug for inverse fixed point real fft -- also fixed test code that should've been failing.
|
|
Thanks to Jean-Marc Valin for bug report.
|
|
|
|
Use sys/types.h for more portable types than short,int,long => int16_t,int32_t,int64_t
|
|
If your system does not have these, you may need to define them -- but at least it breaks in a
|
|
loud and easily fixable way -- unlike silently using the wrong size type.
|
|
|
|
Hopefully tools/psdpng.c is fixed -- thanks to Steve Kellog for pointing out the weirdness.
|
|
|
|
1.2.3 (June 25, 2005) The "you want to use WHAT as a sample" release.
|
|
Added ability to use 32 bit fixed point samples -- requires a 64 bit intermediate result, a la 'long long'
|
|
|
|
Added ability to do 4 FFTs in parallel by using SSE SIMD instructions. This is accomplished by
|
|
using the __m128 (vector of 4 floats) as kiss_fft_scalar. Define USE_SIMD to use this.
|
|
|
|
I know, I know ... this is drifting a bit from the "kiss" principle, but the speed advantages
|
|
make it worth it for some. Also recent gcc makes it SOO easy to use vectors of 4 floats like a POD type.
|
|
|
|
1.2.2 (May 6, 2005) The Matthew release
|
|
Replaced fixed point division with multiply&shift. Thanks to Jean-Marc Valin for
|
|
discussions regarding. Considerable speedup for fixed-point.
|
|
|
|
Corrected overflow protection in real fft routines when using fixed point.
|
|
Finder's Credit goes to Robert Oschler of robodance for pointing me at the bug.
|
|
This also led to the CHECK_OVERFLOW_OP macro.
|
|
|
|
1.2.1 (April 4, 2004)
|
|
compiles cleanly with just about every -W warning flag under the sun
|
|
|
|
reorganized kiss_fft_state so it could be read-only/const. This may be useful for embedded systems
|
|
that are willing to predeclare twiddle factors, factorization.
|
|
|
|
Fixed C_MUL,S_MUL on 16-bit platforms.
|
|
|
|
tmpbuf will only be allocated if input & output buffers are same
|
|
scratchbuf will only be allocated for ffts that are not multiples of 2,3,5
|
|
|
|
NOTE: The tmpbuf,scratchbuf changes may require synchronization code for multi-threaded apps.
|
|
|
|
|
|
1.2 (Feb 23, 2004)
|
|
interface change -- cfg object is forward declaration of struct instead of void*
|
|
This maintains type saftey and lets the compiler warn/error about stupid mistakes.
|
|
(prompted by suggestion from Erik de Castro Lopo)
|
|
|
|
small speed improvements
|
|
|
|
added psdpng.c -- sample utility that will create png spectrum "waterfalls" from an input file
|
|
( not terribly useful yet)
|
|
|
|
1.1.1 (Feb 1, 2004 )
|
|
minor bug fix -- only affects odd rank, in-place, multi-dimensional FFTs
|
|
|
|
1.1 : (Jan 30,2004)
|
|
split sample_code/ into test/ and tools/
|
|
|
|
Removed 2-D fft and added N-D fft (arbitrary)
|
|
|
|
modified fftutil.c to allow multi-d FFTs
|
|
|
|
Modified core fft routine to allow an input stride via kiss_fft_stride()
|
|
(eased support of multi-D ffts)
|
|
|
|
Added fast convolution filtering (FIR filtering using overlap-scrap method, with tail scrap)
|
|
|
|
Add kfc.[ch]: the KISS FFT Cache. It takes care of allocs for you ( suggested by Oscar Lesta ).
|
|
|
|
1.0.1 (Dec 15, 2003)
|
|
fixed bug that occurred when nfft==1. Thanks to Steven Johnson.
|
|
|
|
1.0 : (Dec 14, 2003)
|
|
changed kiss_fft function from using a single buffer, to two buffers.
|
|
If the same buffer pointer is supplied for both in and out, kiss will
|
|
manage the buffer copies.
|
|
|
|
added kiss_fft2d and kiss_fftr as separate source files (declarations in kiss_fft.h )
|
|
|
|
0.4 :(Nov 4,2003) optimized for radix 2,3,4,5
|
|
|
|
0.3 :(Oct 28, 2003) woops, version 2 didn't actually factor out any radices other than 2.
|
|
Thanks to Steven Johnson for finding this one.
|
|
|
|
0.2 :(Oct 27, 2003) added mixed radix, only radix 2,4 optimized versions
|
|
|
|
0.1 :(May 19 2003) initial release, radix 2 only
|