Jean-Marc Valin
1dab60cc91
Better use of the arithmetic operators
2008-09-16 13:29:37 -04:00
Jean-Marc Valin
453ccd829a
Generate slightly more accurate WMOPS figures
2008-09-12 20:52:27 -04:00
Jean-Marc Valin
c7e0b76c06
Making sure not to use the C library calls directly
2008-03-16 07:55:29 +11:00
Jean-Marc Valin
d857ac48de
Using reciprocal approximation instead of full 32-bit division in alg_quant()
2008-03-12 13:26:37 +11:00
Jean-Marc Valin
f93747c44a
fixed-point: changed find_spectral_pitch() to use single-precision (16-bit) FFT.
...
This involved adding kfft_single.[ch] that redefines kiss_fft a second time
with a different prefix. All this is still a bit of a mess now. The mask
had to be converted to 16-bit input, but we're still using floats to apply it.
2008-03-05 17:20:30 +11:00
Jean-Marc Valin
877b1975b6
fixed-point: converted intra prediction and folding, unb0rked mixed-precision
2008-02-29 16:40:39 +11:00
Jean-Marc Valin
2aaa0fee93
fixed-point: overflow debugging now works again.
2008-02-29 16:07:40 +11:00
Jean-Marc Valin
3ca9b1d295
fixed-point: Moved sqrt and cos approximations to mathops.h
2008-02-27 23:50:31 +11:00
Jean-Marc Valin
49ca99efa5
fixed-point: initial support for using the fixed-point MDCT (rest is still all
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float)
2008-02-25 14:12:10 +11:00
Jean-Marc Valin
44830b0440
Float FFT now does the same scaling as the fixed-point FFT
2008-02-24 22:36:05 +11:00
Jean-Marc Valin
e8b6830f53
minor tweak to FFT
2008-02-24 22:06:04 +11:00
Jean-Marc Valin
d911bc4d0d
Added a mixed-precision version of the FFT with 32-bit data and 16-bit twiddles.
2008-02-24 17:16:47 +11:00
Jean-Marc Valin
9ced5d042d
Created an separate kiss_twiddle_cpx type to make it possible to use
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different precision for twiddles and data.
2008-02-24 13:46:30 +11:00
Jean-Marc Valin
25649c1569
Fixed the FFT for higher precision
2008-02-22 16:19:39 +11:00
Jean-Marc Valin
af8402e033
Fixed stuff that got broken during the forward-backward split of the FFT
2008-02-22 12:13:59 +11:00
Jean-Marc Valin
6211c90def
Split the radix functions into forward and backward versions, removed the
...
"inverse" flag from the state so it can be shared between the forward and
inverse transforms.
2008-02-08 14:21:20 +11:00
Jean-Marc Valin
d7dfb00886
Made pre-computed twiddles the same for forward and inverse FFT
2008-02-08 13:25:03 +11:00
Jean-Marc Valin
e6586d21fa
Real FFT cleanup, plus some testcases
2008-02-08 10:48:15 +11:00
Jean-Marc Valin
4d0a7d0f1b
Now using an MDCT implementation I can actually understand.
2008-02-08 10:22:52 +11:00
