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435 commits

Author SHA1 Message Date
Jean-Marc Valin
69921c4cde Considering the end band in more places in the code 2010-07-16 15:25:30 -04:00
Jean-Marc Valin
0be05b0335 Encoding transient_time independently of the sampling rate 2010-07-16 14:23:03 -04:00
Jean-Marc Valin
223b69db02 Better support for non-48 kHz sampling rates 2010-07-16 11:47:50 -04:00
Jean-Marc Valin
af1fce93b1 Pre-emphasis coefficients now part of the mode and has a numerator as well 
as a denominator
 2010-07-16 11:05:06 -04:00
Jean-Marc Valin
e34c85a0cc Using short blocks a bit more often now that we have variable tf resolution 2010-07-15 17:57:50 -04:00
Jean-Marc Valin
2ed5e67a2e Handling the start band and end band in tf encoding 2010-07-13 18:18:23 -04:00
Jean-Marc Valin
525d7cfdc4 Support for adjusting the end band 2010-07-13 18:18:23 -04:00
Jean-Marc Valin
72513f3cc7 Sharing twiddle factors across all MDCTs 2010-07-07 21:26:38 -04:00
Jean-Marc Valin
4424b5a803 Updating DISABLE_FLOAT_API use 2010-07-06 19:37:23 -04:00
Jean-Marc Valin
b6a5f9d38f fixed point bug fix in tf_analysis() 2010-07-06 17:57:14 -04:00
Jean-Marc Valin
c7bcf389da Another coarse budget fix for _ec() calls 2010-07-05 14:33:49 -04:00
Jean-Marc Valin
bdcaaf73c6 Fixed a few more issues with the _ec() calls. 2010-07-05 13:52:41 -04:00
Jean-Marc Valin
71ae6d4714 Some C90-ication 2010-06-27 21:55:08 -04:00
Jean-Marc Valin
a57e924f2e Removing some warnings 2010-06-27 00:53:51 -04:00
Jean-Marc Valin
a01106587c Improved quality of small frame sizes at low bitrate. 
Adding a temporal energy floor to prevent extremely small values when there's
only one bin in the band.
 2010-06-23 15:22:54 -04:00
Jean-Marc Valin
6b95d8fdb8 Improved code for reusing ec structures 
Using the number of unallocated bytes for coarse quantization and VBR
instead the total number of bytes.
 2010-06-21 21:39:44 -04:00
Jean-Marc Valin
30d5125bff No need to memset() the byte buffer 2010-06-21 17:55:28 -04:00
Jean-Marc Valin
6c3788cb53 Removing old PCL, added plc.h 2010-06-20 23:01:33 -04:00
Jean-Marc Valin
feca095e96 fixed-point: New PLC now enabled by default 2010-06-17 20:25:51 -04:00
Jean-Marc Valin
7b7f07120e fixed-point: More work on the PLC 2010-06-17 20:10:02 -04:00
Jean-Marc Valin
456eab2e4f More work on fixed-point Levinson-Durbin 2010-06-16 22:38:57 -04:00
Jean-Marc Valin
890a9c05e0 Implementing two choices for the tf resolution 2010-06-13 08:06:28 -04:00
Jean-Marc Valin
e2d5b33780 Completely disabling the tf code at low bitrate 2010-06-06 23:16:40 -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
6202c746cf Fix for PLC crash when using large frames 2010-06-01 00:30:37 -04:00
Jean-Marc Valin
32589cd33e Trying not to crash on bit errors 
When the pitch flag gets corrupted, make sure that pitch is actually
allowed instead of generating a bogus pitch index and crashing.
 2010-05-31 21:56:12 -04:00
Jean-Marc Valin
816f893569 removed stupid code in transient_analysis() 2010-05-31 21:36:46 -04:00
Timothy B. Terriberry
43e9406201 Change ec_{enc|dec}_bit_prob to take probabilities in units of 1/65536 instead of 1/256. This allows them to use a single 16x16->32 multiply instead of a 24x8->32 multiply. Also change the time-frequency resolution flag coding to ensure that "0" is always the most-probable symbol (i.e., that prob("1")<50%), as that's where all the rounding error accumulates. 2010-05-29 23:45:28 -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
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
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
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
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
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
94216aeba4 Allocation adjustment code in quand_band(). 2010-05-10 21:27:00 -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
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
073d0bc925 Yet another step towards variable frame size 2010-05-07 21:20:22 -04:00
Jean-Marc Valin
0475267e62 More preparation work for 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