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183 commits

Author SHA1 Message Date
Jean-Marc Valin
30e1b4d36c Moved the windowing operation from compute_mdcts() to mdct_forward() in an 
attempt to reduce copying.
 2008-04-22 00:10:52 +10:00
Jean-Marc Valin
2146e649c8 Disabling pitch when gain is very small. 2008-04-21 15:08:57 +10:00
Jean-Marc Valin
50bf8b0121 Removing some unnecessary initialisations to zero. 2008-04-21 12:14:16 +10:00
Jean-Marc Valin
7aa9d8c7ae Saved some memory by reducing the size of some arrays to only what's needed. 
Typically saves 768 bytes.
 2008-04-21 00:04:23 +10:00
Jean-Marc Valin
6229006510 Better indexing of pre/de-emphasis in celt_{en|de}code(). 2008-04-20 22:16:02 +10:00
Jean-Marc Valin
1a3ed79cbe Saved two copies when computing MDCTs of mono signals 2008-04-20 20:39:53 +10:00
Jean-Marc Valin
bdb58836ce more use of CELT_COPY in celt_encode(). Also fixed a stack size bug for stereo 2008-04-20 17:42:10 +10:00
Jean-Marc Valin
65fb92e824 more restricted pointers in celt.c 2008-04-19 22:24:53 +10:00
Jean-Marc Valin
91ecf24ebb encoder pre-emphasis now in 16-bits 2008-04-19 19:44:58 +10:00
Jean-Marc Valin
f11d6f49f9 optimisation: giving more hints to the compiler about the sizes in 
find_spectral_pitch()
 2008-04-18 23:13:14 +10:00
Jean-Marc Valin
abdfc38837 Saturation in SIG2INT16 using MIN/MAX 2008-04-18 15:57:18 +10:00
Jean-Marc Valin
57e004bf74 More use of CELT_MEMSET 2008-04-16 11:58:48 +10:00
Jean-Marc Valin
b18ec0b08d Reworked the static modes. Now, if all static modes have the same frame size, 
overlap or number of channels, we can pass the hint to the compiler.
 2008-04-11 04:07:52 +10:00
Jean-Marc Valin
05e56c4d6c Defining DISABLE_STEREO now optimises for the mono case 2008-04-10 09:13:05 +10:00
Jean-Marc Valin
bd2828f64b Decision on whether to use pitch is now taken only based on energy in the 
first three bands (instead of total MDCT window energy)
 2008-03-26 08:10:27 +11:00
Jean-Marc Valin
b886ddc08c Removed support for more than one MDCT blocks per frame. I don't think there's 
a use for that anymore now that the overlap can be less than one frame.
 2008-03-25 14:38:55 +11:00
Jean-Marc Valin
3203474732 Using restrict to make it clear there's no aliasing issues in the mdct. 2008-03-22 11:23:57 +11:00
Jean-Marc Valin
a536f77202 Added a few "restrict" keywords and changed some divisions to shifts 2008-03-22 09:01:50 +11:00
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
679f5cc675 Enabling warnings and restricting symbol visibility 2008-03-13 17:39:55 +11:00
Jean-Marc Valin
7f38906f50 Added info for properly exporting symbols 2008-03-12 17:46:04 +11:00
Jean-Marc Valin
31b79d1993 Changed definition of VARDECL to make it more flexible. No actual code change. 2008-03-12 17:17:23 +11:00
Jean-Marc Valin
29f52990b9 Moved the psycoacoustics data to the mode struct 2008-03-10 13:34:52 +11:00
Jean-Marc Valin
3dbc1d0df9 cleaning up some of the mode stuff 2008-03-08 15:21:24 +11:00
Jean-Marc Valin
a1d95d70ca fixed-point: removed the last float op in celt.c 2008-03-07 17:33:58 +11:00
Jean-Marc Valin
cefc5ca26d Revert "compute_band_energies() merged with normalised_bands()" 
This reverts commit a1bc18a388.
I think it's easier for now to deal with two functions here, even though they
could be merged.
 2008-03-07 14:53:17 +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
d9de593104 Fixed a bunch of warnings 2008-03-05 08:11:57 +11:00
Jean-Marc Valin
a1bc18a388 compute_band_energies() merged with normalised_bands() 2008-03-04 22:52:52 +11:00
Jean-Marc Valin
069c3de65f Removed deprecated mode interface and added missing include 2008-03-04 20:38:00 +11:00
Jean-Marc Valin
0758689246 pre-emphasis coef now a constant 2008-03-03 17:19:17 +11:00
Jean-Marc Valin
ddb181b75e A bit more reordering in stack memory allocation -- saved 1024 bytes on peak use 2008-03-03 14:53:47 +11:00
Jean-Marc Valin
137ec8e9b8 applying the pitch windowing directly in find_spectral_pitch() 2008-03-03 14:44:42 +11:00
Jean-Marc Valin
05080b4b9b No longer storing the zero parts of the in[] array in the encoder 2008-03-03 14:23:51 +11:00
Jean-Marc Valin
632f218b4b Pitch predictor now uses a larger range of offset by not being limited to the 
window size when parts of the window are zero.
 2008-03-03 14:08:21 +11:00
Jean-Marc Valin
0141723d30 compute_mdcts() no longer reads the part of the input that should be zeros 
anyway (check-point for pitch improvements to follow)
 2008-03-03 13:59:55 +11:00
Jean-Marc Valin
3e08a88389 Only the (rising) overlap part of the window is stored now. No need to hold the 
zeros and ones (nor even the second half).
 2008-03-03 13:49:20 +11:00
Jean-Marc Valin
f28062fe6a Don't bother multiplying when the window's value is one or zero 2008-03-03 13:42:23 +11:00
Jean-Marc Valin
a556694e12 Stereo pitch search no longer requires twice the memory/complexity. 2008-03-01 20:14:20 +11:00
Jean-Marc Valin
d748cd5570 Another C90-fying pass. Fixed some warnings in the process. 2008-03-01 07:27:03 +11:00
Jean-Marc Valin
81b38c2295 Moved mdct state and window to the mode so it can be shared between multiple 
encoders and decoders.
 2008-02-29 21:08:49 +11:00
Jean-Marc Valin
8d4ac155e6 Saved on stack usage by changing the order of the allocation 2008-02-29 17:24:02 +11:00
Jean-Marc Valin
8600f69f79 Initial support for a managed stack/scratchpad. Still needs some work. 2008-02-29 15:14:12 +11:00
Jean-Marc Valin
5e171490a9 Removed some unused parameters and fixed a couple -W warnings 2008-02-28 00:07:23 +11:00
Jean-Marc Valin
3f382caeb4 Fixing pi again before another massive public outcry 2008-02-27 14:07:45 +11:00
Jean-Marc Valin
e40a19cbe9 fixed-point: no float vars left (and nearly no float ops left) in celt.c 2008-02-27 12:09:50 +11:00
Jean-Marc Valin
5d56183404 fixed-point: log-energy for previous frame now a 16-bit value. This currently 
intruduces a bit of an encoder-decoder mismatch (Q8 in dB), but it'll be
reduced when the interals of quant_energy_mono() are properly converted to
fixed-point and oldEBands gets rounded instead of truncated.
 2008-02-27 11:59:05 +11:00
Jean-Marc Valin
1d6ad108fb fixed-point: converted window to 16-bit value 2008-02-27 11:25:25 +11:00
Jean-Marc Valin
42074389bd fixed-point: pre/de-emphasis converted. 2008-02-27 11:08:53 +11:00
Jean-Marc Valin
8835a4df25 Removed useless masking curve for current frame and ignored Fs argument to 
masking computation functions.
 2008-02-26 16:35:19 +11:00