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Author SHA1 Message Date
Timothy B. Terriberry
299747ee24 Provide direct implementations ec_{enc|dec}_bit_prob() that do not require a division instead of using the normal entropy coder path. This should be exactly equivalent to the existing code. 2010-05-29 23:45:18 -04:00
Jean-Marc Valin
8cc945c53a Cleaning up VBR to be frame-size independent 2010-05-29 08:07:18 -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
7331977c29 RD optimisation now takes bitrate into account 2010-05-28 21:12:39 -04:00
Jean-Marc Valin
bdb5871bc4 Simplification to the transient detection code 
Discarding the amplitude of the overlap for "frame_max"
 2010-05-28 18:58:42 -04:00
Jean-Marc Valin
8823261738 More simplifications to the Viterbi code 2010-05-28 18:01:02 -04:00
Jean-Marc Valin
0ef39c9cc4 Simplifications to the tf_res RD code 2010-05-28 17:50:34 -04:00
Jean-Marc Valin
9d420c58e9 Viterbi-based RD optimization of the tf_res decisions 2010-05-28 17:26:27 -04:00
Jean-Marc Valin
581fdba936 changing probability of first tf resolution symbol 2010-05-28 06:56:23 -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
8035b6589d Adds a range coder call to encode a single bit with arbitrary probability 2010-05-27 16:25:07 -04:00
Jean-Marc Valin
c4ac57023c Fixed a long-standing rare mismatch 
In cases where the coarse energy quantizer wasn't able to
go down fast enough, we could have a negative error that didn't
get clamped.
 2010-05-26 15:04:41 -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
9f89cab6ec Improving the transient detection 
When a transient occurs in the overlap between two frames, we
now make sure that both these frames are coded as transients
 2010-05-21 14:18:38 -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
4aa1b8df26 Most 5ms bands now have even width 2010-05-19 22:02:02 -04:00
Jean-Marc Valin
20639c416c Tuned the 5ms mode to have a band at 4 kHz and one at 8 kHz 2010-05-19 16:10:12 -04:00
Jean-Marc Valin
5f96146a85 Implemented CELT_SET_START_BAND 2010-05-19 13:38:36 -04:00
Jean-Marc Valin
f5e2e32d15 Support for passing your own ec state to the decoder 2010-05-19 12:05:02 -04:00
Jean-Marc Valin
4794f2ec86 Support for passing your own ec state to the encoder 2010-05-19 11:56:57 -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
d56c610cac API change: optional resynthesis 
The main encode call no longer takes a pointer for the optional resynthesis.
It's now done with a call to celt_encode_resynthesis().
 2010-05-07 21:20:22 -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
fbd82eb8f4 Oops! Fixed the fixed-point build 2010-05-07 21:20:22 -04:00
Jean-Marc Valin
811f21ab76 Fix for very short frame size (M=1) 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