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262 commits

Author SHA1 Message Date
Jean-Marc Valin
dc68eb231f Comments, code cleanup 2010-06-19 10:27:28 -04:00
Jean-Marc Valin
890a9c05e0 Implementing two choices for the tf resolution 2010-06-13 08:06:28 -04:00
Jean-Marc Valin
0a571ef92a Encoding the tf parameters after coarse energy 
Also a minor cleanup to the recombining/division
 2010-06-05 23:12:19 -04:00
Jean-Marc Valin
4f0de0ba6a Fixed stupid bug for single-sample bands 2010-05-31 09:51:36 -04:00
Jean-Marc Valin
524623899c Folding tuning 
Trying to fold only from regions where we have at least 2 bits of depth
 2010-05-29 00:28:06 -04:00
Jean-Marc Valin
163b76e8c4 Adaptive time-frequency resolution 
Encoding the optimal tf-tradeoff for each band and then
applying it during quantization.
 2010-05-27 23:56:53 -04:00
Jean-Marc Valin
40e993c029 Re-organised the special case for N==1 2010-05-26 15:04:29 -04:00
Jean-Marc Valin
c5d00a066e Bunch of fixes for frames of 2.5 ms. 2010-05-26 11:27:32 -04:00
Jean-Marc Valin
9d069846ee More recombining "infrastructure" 2010-05-25 23:54:56 -04:00
Jean-Marc Valin
cee66b512e Code for recombining bands (not enabled yet) 2010-05-25 23:15:14 -04:00
Jean-Marc Valin
2fcb239736 Removing the rest of the >32-bit PVQ code 2010-05-24 09:05:36 -04:00
Jean-Marc Valin
cccdfd481b Minor code simplifications 2010-05-21 17:36:58 -04:00
Jean-Marc Valin
a148df18dc Doing folding from the highest freq possible 
(rather than the lowest)
 2010-05-21 16:05:47 -04:00
Jean-Marc Valin
791cfe1f0a Increasing the temporal resolution of transients 
Apply a one-level Haar transform (or Hadamard) on each short MDCT
to nearly double the time-domain resolution.
 2010-05-21 15:44:06 -04:00
Jean-Marc Valin
67217ee746 Splitting transients in time domain 2010-05-21 13:58:51 -04:00
Jean-Marc Valin
6384196f76 Moving code to quant_band() 2010-05-21 10:44:11 -04:00
Jean-Marc Valin
4c27552b09 Tuning/cleanup of angle quantization 2010-05-21 07:54:59 -04:00
Jean-Marc Valin
cae30df09a Getting rid of PVQ-level split 
Adding one more level of band splitting so that splitting at the
PVQ encoding level is no longer necessary.
 2010-05-21 00:26:03 -04:00
Jean-Marc Valin
c1ca587d47 Saving ~1 kB by using chars for the alloc table 
Also a bunch of comments
 2010-05-18 23:20:43 -04:00
Jean-Marc Valin
72c97f5633 Sharing more code between encode and decode (bis) 2010-05-18 23:19:19 -04:00
Jean-Marc Valin
746b2a8c63 Merged encoding/decoding of mono/stereo 
Now everything is done through quant_all_bands() and quant_band().
 2010-05-14 22:12:33 -04:00
Jean-Marc Valin
eb926680f6 Trying to prevent PVQ-level splits 
We prevent as many as possible, but they can still occur if we
manage to reach the LN limit
 2010-05-14 07:47:30 -04:00
Jean-Marc Valin
c803ee1959 Entropy-coding the new split parameter. 
Uses a triangular PDF for coding the angle.
 2010-05-14 00:17:31 -04:00
Jean-Marc Valin
2e8ba5483d New band splitting method based on the stereo code 2010-05-13 00:04:57 -04:00
Jean-Marc Valin
1520f8924e Stereo quantization also made more generic 2010-05-11 23:38:23 -04:00
Jean-Marc Valin
80e56f1a2e Making stereo code a bit more generic 2010-05-11 23:13:30 -04:00
Jean-Marc Valin
06073824a5 Trivial code cleanup 2010-05-11 21:01:19 -04:00
Jean-Marc Valin
aead79b133 Proper use of logN and logM for the offsets 2010-05-11 07:46:35 -04:00
Jean-Marc Valin
c40d6f97a2 Making stereo code use [un]quant_bands() as well 2010-05-10 21:55:36 -04:00
Jean-Marc Valin
94216aeba4 Allocation adjustment code in quand_band(). 2010-05-10 21:27:00 -04:00
Jean-Marc Valin
2123f358b1 Cleaning up the folding code. 
Folding now moved to alg_quant() and alg_unquant(). No more funny short block
alignment checks because bands now have to be aligned.
 2010-05-09 19:45:31 -04:00
Jean-Marc Valin
e949b72049 Fixed pitchEnd wrt to variable frame size. It should (sort of) all work now 2010-05-07 21:20:22 -04:00
Jean-Marc Valin
ce4dd367c2 More work on variable frame size (getting rid of FRAMESIZE() ) 2010-05-07 21:20:22 -04:00
Jean-Marc Valin
017fa85775 Changing the encoder API to add the frame size 2010-05-07 21:20:22 -04:00
Jean-Marc Valin
073d0bc925 Yet another step towards variable frame size 2010-05-07 21:20:22 -04:00
Jean-Marc Valin
3b918bac54 replaced instances of mode->nbShortMdcts by the dynamic number of MDCTs (M) 2010-05-07 21:20:22 -04:00
Jean-Marc Valin
65ee67ac55 Making the band definition the same at all frame sizes. 2010-04-26 07:08:44 -04:00
Jean-Marc Valin
6578ea0e26 Re-enabled special stereo code for N=2 2010-04-20 23:52:31 -04:00
Jean-Marc Valin
b8ba70c99b Disabling resynthesis when not needed (need to remove folding for this to work) 2010-04-18 22:10:24 -04:00
Jean-Marc Valin
628c025373 Converted a few double-precision constants to single precision 2010-04-16 20:57:56 -04:00
Jean-Marc Valin
64209a3edf A few minor optimisations (compute_allocation, denormalise_bands, 
deemphasis)
 2010-04-06 20:33:50 -04:00
Jean-Marc Valin
70bdf9bf39 fixed-point: reducing the mismatch in the folded part 2010-03-15 20:50:30 -04:00
Jean-Marc Valin
e45ccb1693 Fix quant_bands() for start != 0 2010-03-01 07:09:46 -05:00
Jean-Marc Valin
3a0bc3d95c Allowing CELT to skip the low frequencies 2010-02-25 22:46:55 -05:00
Jean-Marc Valin
f81edea012 removing more unused code 2009-10-23 22:33:25 -04:00
Jean-Marc Valin
a3bba38b49 This should prevent a rare divide-by-zero in the pitch gain code 2009-10-20 07:13:35 -04:00
Jean-Marc Valin
234969c903 Removed the _t from all the celt*_t types to avoid clashing with POSIX 2009-10-17 22:12:42 -04:00
Jean-Marc Valin
8b2ff0da5a Updated copyright notices 2009-10-17 21:40:10 -04:00
Jean-Marc Valin
30f7f813ea Changed all the celt*int*_t types to remove the _t suffix, which is reserved 
by POSIX. The other _t types that are not part of the API are still there
for now. Also, got rid of all that was left of the 64-bit types.
 2009-10-17 14:35:13 -04:00
Jean-Marc Valin
d35d677543 Constrain the pitch gain to prevent potential instabilities. 2009-10-16 23:16:47 -04:00