Jean-Marc Valin
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3ccf3a5655
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Reverted to the old MDCT behaviour of only doing down-scaling in the FFT.
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2008-04-22 17:08:59 +10:00 |
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Jean-Marc Valin
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8ddd7f400d
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mdct_backward now does the WOLA, so there isn't much left in compute_inv_mdcts
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2008-04-22 13:37:16 +10:00 |
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Jean-Marc Valin
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4989c1212a
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Moved the windowing from compute_inv_mdcts() to mdct_backward()
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2008-04-22 12:18:36 +10:00 |
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Jean-Marc Valin
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447e5b8fc6
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Separated the pre-rotate from the window+shuffling and further simplified
everything.
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2008-04-22 10:13:25 +10:00 |
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Jean-Marc Valin
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ef0d5f15c7
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Further simplifications to the forward mdct
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2008-04-22 09:49:22 +10:00 |
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Jean-Marc Valin
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41880805ab
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non-negative mdct input index
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2008-04-22 07:50:50 +10:00 |
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Jean-Marc Valin
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30e1b4d36c
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Moved the windowing operation from compute_mdcts() to mdct_forward() in an
attempt to reduce copying.
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2008-04-22 00:10:52 +10:00 |
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Jean-Marc Valin
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884916fb27
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better mdct_backward() indexing
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2008-04-19 12:53:43 +10:00 |
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Jean-Marc Valin
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39aad911d9
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Made twiddle pointer in mdct more explicit
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2008-04-17 07:29:53 +10:00 |
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Jean-Marc Valin
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c1a4c2ec44
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some index work (simplifications for dumb compilers) on IMDCT
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2008-04-10 18:54:02 +10:00 |
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Jean-Marc Valin
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df9275b31a
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Not all compilers are equal -- making it clearer how the MDCT indexing is done
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2008-04-10 14:38:14 +10:00 |
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Jean-Marc Valin
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bd2828f64b
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Decision on whether to use pitch is now taken only based on energy in the
first three bands (instead of total MDCT window energy)
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2008-03-26 08:10:27 +11:00 |
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Jean-Marc Valin
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3203474732
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Using restrict to make it clear there's no aliasing issues in the mdct.
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2008-03-22 11:23:57 +11:00 |
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Jean-Marc Valin
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a536f77202
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Added a few "restrict" keywords and changed some divisions to shifts
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2008-03-22 09:01:50 +11:00 |
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Jean-Marc Valin
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32d8c10df9
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Removed potentially unused var in MDCT init
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2008-03-21 13:11:16 +11:00 |
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Jean-Marc Valin
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6e09f680f1
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fixed-point: fix for 32-bit TI FFT
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2008-03-21 12:47:41 +11:00 |
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Jean-Marc Valin
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70162a4f82
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fixed-point: Wrapper for the 32-bit complex FFT used in the MDCT so we can use
the TI dsplib FFT.
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2008-03-21 12:09:27 +11:00 |
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Jean-Marc Valin
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c7e0b76c06
|
Making sure not to use the C library calls directly
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2008-03-16 07:55:29 +11:00 |
|
Jean-Marc Valin
|
31b79d1993
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Changed definition of VARDECL to make it more flexible. No actual code change.
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2008-03-12 17:17:23 +11:00 |
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Jean-Marc Valin
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c209c342bf
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fixed-point: defined HALF32() and used it for the forward mdct.
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2008-03-07 17:50:45 +11:00 |
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Jean-Marc Valin
|
a78dc946cd
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Making 16-bit compilers happy
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2008-03-05 08:15:55 +11:00 |
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Jean-Marc Valin
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d748cd5570
|
Another C90-fying pass. Fixed some warnings in the process.
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2008-03-01 07:27:03 +11:00 |
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Jean-Marc Valin
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81b38c2295
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Moved mdct state and window to the mode so it can be shared between multiple
encoders and decoders.
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2008-02-29 21:08:49 +11:00 |
|
Jean-Marc Valin
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877b1975b6
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fixed-point: converted intra prediction and folding, unb0rked mixed-precision
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2008-02-29 16:40:39 +11:00 |
|
Jean-Marc Valin
|
8600f69f79
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Initial support for a managed stack/scratchpad. Still needs some work.
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2008-02-29 15:14:12 +11:00 |
|
Jean-Marc Valin
|
9a5f3d2e6d
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16-bit fixes and warning fixes
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2008-02-26 10:38:17 +11:00 |
|
Jean-Marc Valin
|
65d79e4419
|
Corrected the last digit of pi after massive public outcry :-)
|
2008-02-26 07:38:27 +11:00 |
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Jean-Marc Valin
|
b4dfce4665
|
fixed-point: Using a NORM_SCALING of 16384, sig_norm_t is still a float though.
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2008-02-25 17:41:30 +11:00 |
|
Jean-Marc Valin
|
bd43729ecd
|
MDCT is in fixed-point now
|
2008-02-25 12:07:13 +11:00 |
|
Jean-Marc Valin
|
2e8a3b20d0
|
MDCT conversion, part I.
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2008-02-25 11:49:38 +11:00 |
|
Jean-Marc Valin
|
44830b0440
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Float FFT now does the same scaling as the fixed-point FFT
|
2008-02-24 22:36:05 +11:00 |
|
Jean-Marc Valin
|
2c1d2f5bcc
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MDCT now scales down by N/2 instead of N/4. The factor two is moved to the
overlap-add during synthesis.
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2008-02-22 21:54:11 +11:00 |
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Jean-Marc Valin
|
37d13ceebe
|
Adding celt_sig_t where needed
|
2008-02-22 14:45:58 +11:00 |
|
Jean-Marc Valin
|
0bb05bc5ea
|
Another bunch of C99 array conversions (few more to go)
|
2008-02-20 13:43:40 +11:00 |
|
Jean-Marc Valin
|
02fa913c32
|
More C89 fixes, making sure to include config.h from all source files.
|
2008-02-20 12:09:29 +11:00 |
|
Jean-Marc Valin
|
a85657bd29
|
removed // comments and added stack_alloc.h (not used everywhere yet)
to make the code more C89-friendly.
|
2008-02-20 11:59:30 +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
|
4d0a7d0f1b
|
Now using an MDCT implementation I can actually understand.
|
2008-02-08 10:22:52 +11:00 |
|
Jean-Marc Valin
|
f02ba11950
|
MDCT analysis-synthesis (untested)
|
2007-11-30 01:10:42 +11:00 |
|
Jean-Marc Valin
|
842b445e1b
|
There's nothing, but it now compiles
|
2007-11-29 17:19:47 +11:00 |
|
Jean-Marc Valin
|
63590897db
|
Initial commit with the autotools stuff and files taken from Speex and Vorbis.
|
2007-11-29 17:01:16 +11:00 |
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