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85 commits

Author SHA1 Message Date
Jean-Marc Valin
306d7f5a30 fixed-point: slight (but free) accuracy improvement in compute_band_energies() 
Also moves the VSHR32() condition outside the loop just in case some compilers
don't optimize that properly.
 2013-12-16 01:08:21 -05:00
Jean-Marc Valin
4a168eb343 Remove useless code in alloc_trim_analysis() 2013-12-11 01:34:06 -05:00
Jean-Marc Valin
91f8010108 Removing indirections 2013-12-10 22:09:33 -05:00
Pedro Becerra
a9b7def9f5 s/MAX16/MAX32/ in transient_analysis() 
Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
 2013-12-09 16:08:29 -05:00
Jean-Marc Valin
57cd849cf7 Defining celt_inner_prod() and using it instead of explicit loops. 
Also adds an SSE-optimized celt_inner_prod().
 2013-12-09 15:26:58 -05:00
Jean-Marc Valin
ff072009fe Replaces inline copies and initialization with OPUS_*() macros. 
This is a bit faster at -O2 because memcpy()/memmove()/memset() are
vectorized. The code is also cleaner.
 2013-12-09 15:26:52 -05:00
Jean-Marc Valin
c94e4bb103 Optimizes encoder NaN detection and clipping by only running them when needed 
NaN detection should now be able to catch values that would create NaNs
further down.
 2013-12-09 15:26:03 -05:00
Jean-Marc Valin
5626908ec3 Fixed-point fast-path for normal 48 kHz encoding in celt_preemphasis() 2013-12-05 16:40:59 -05:00
Jean-Marc Valin
aed1009df9 Turns a 16x32 multiply into a 16x16 one in celt_preemphasis(). 2013-12-05 13:36:48 -05:00
Jean-Marc Valin
96408b6295 Fixes Opus-custom preemphasis 
Also adds denorm avoidance for non-48 kHz rates
 2013-12-02 20:02:37 -05:00
Jean-Marc Valin
086ea7c7e5 Whoa! This fixes a pretty bad fixed-point stereo regression 2013-11-29 16:47:52 -05:00
Jean-Marc Valin
d6eb9c468f Silences a warning in fixed-point 2013-11-25 22:33:43 -05:00
Jean-Marc Valin
2924af4db0 Merges surround and stereo intensity stereo thresholds again. 
The different results for surround were mostly due to a bug in squishyball.
 2013-11-25 21:24:30 -05:00
Jean-Marc Valin
a47d6f308f Intensity stereo update, partially based on Monty's listening 
Intensity stereo is now based on equiv_rate and should no longer oscillate
in hybrid mode. Also, there is now a separate set of thresholds for
surround tuned by Monty. The non-surround thresholds were also updated at
low bitrate to be closer to what Monty found for surround.
 2013-11-25 00:03:31 -05:00
Jean-Marc Valin
41e8906cd6 opus_custom_encoder_init() now only needed for custom modes. 2013-11-20 19:34:14 -05:00
Timothy B. Terriberry
39386e0b85 Adds Neon assembly for correlation/convolution 
Optimizing celt_pitch_xcorr()/xcorr_kernel() which also speeds up
FIRs, IIRs and auto-correlations

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
 2013-11-18 13:41:17 -05:00
Jean-Marc Valin
1b28e0cae5 Oops, missing semicolon on RESTORE_STACK in previous commit 2013-11-15 01:57:25 -05:00
Jean-Marc Valin
e83d2aa3f7 Adds missing RESTORE_STACKs in celt_encode_with_ec() 2013-11-15 01:52:28 -05:00
Jean-Marc Valin
2dc27dfa13 Rename preemphasis() to celt_preemphasis() to avoid amrnb symbol clash 
http://lists.xiph.org/pipermail/opus/2013-November/002372.html
 2013-11-13 23:18:26 -05:00
Jean-Marc Valin
ab86a9cca7 Fixes more warnings 2013-11-13 23:06:25 -05:00
Jean-Marc Valin
0d584b905a Prevents LFE from busting at really low bitrate 2013-11-13 22:42:04 -05:00
Jean-Marc Valin
a71c9adf52 Fixes MSVC conversion warnings 2013-11-13 12:07:01 -05:00
Jean-Marc Valin
ca6fac041b Fixes some minor issues found by scan build 2013-11-09 18:28:40 -05:00
Jean-Marc Valin
c1959e7dc3 Taking into account the frame size in more encoder decisions 
Stereo mode, stereo width, min bandwidth, VBR damping
 2013-11-08 19:24:10 -05:00
Jean-Marc Valin
8f466274d3 Removes a float var that shouldn't have been there 
Defining FIXED_POINT and DISABLE_FLOAT_API now leaves no float instruction
 2013-10-28 21:50:10 -04:00
Jean-Marc Valin
9c23f5cdca Makes stereo savings still less aggressive 
Caps the savings at 1 bit per (coded) sample. This doesn't really increase
the bitrate and fixes some issues, e.g. with IgorC's "twilight" sample.
 2013-10-28 14:15:18 -04:00
Jean-Marc Valin
942fc816d1 Replaces log2() with celt_log2() and fixes a potential divide-by-zero 2013-10-01 19:27:30 -04:00
Jean-Marc Valin
7c60625f80 Merge branch 'exp_surround1' 2013-10-01 17:06:09 -04:00
Stefan Hacker
a32fa319d3 Avoid using C++ keyword 'new' 
Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
 2013-09-29 00:07:52 -04:00
Jean-Marc Valin
36a21ed536 Very basic surround rate calibration 2013-09-14 15:46:09 -04:00
Jean-Marc Valin
ae7dc8a13f More surround masking tuning 2013-09-13 15:05:50 -04:00
Jean-Marc Valin
039e9ab155 Tuning the surround masking 
We're now a bit more conservative and only take into account the bands
that are being codec. Also weighting the rate saving by the band width.
 2013-09-12 03:05:43 -04:00
Jean-Marc Valin
ba7dbb365e Analysis scaling fixes 
This should make the scaling the same for fixed and float. It changes the float
scaling too by normalizing by the number of channels, which matters for
bandwidth detection.
 2013-09-09 16:39:19 -04:00
Jean-Marc Valin
3ab03e0556 First pass at making the analysis code run with FIXED_POINT 
Code is still float, but at least tonality esitmation seems to work.
Speech/music analysis is still disabled.
 2013-09-06 16:00:39 -04:00
Jean-Marc Valin
0f68696a97 Adds trim and dynalloc control to surround masking 2013-09-05 12:49:55 -04:00
Jean-Marc Valin
fdceae89bf Surround masking rewrite 
The channel energy is now computed using an MDCT in the multi-stream
encoder rather than computing the energy of the stereo downmix.
 2013-08-30 21:58:02 -04:00
Jean-Marc Valin
e45509294c Better handling of the dynalloc cap for CBR/CVBR 2013-07-30 05:12:46 -04:00
Jean-Marc Valin
8259492a7d Fixes an integer wrap-around due to an exceedingly large QCONST16 2013-07-25 13:55:15 -04:00
Gregory Maxwell
5280c71883 Revert "Fixes a number of double promotions and missing casts." 
This reverts commit 43279728cd.
 2013-07-15 15:51:24 -07:00
Gregory Maxwell
43279728cd Fixes a number of double promotions and missing casts. 
At a minimum MSVC warns on some of this stuff.
 2013-07-15 15:23:03 -07:00
Jean-Marc Valin
cd373b54de Surround masking tuning 
More conservative surround masking
Disables temporal VBR on surround
Disables tonality on LFE
 2013-07-07 02:51:07 -04:00
Jean-Marc Valin
4365498d48 Prevents zero-energy on LFE 2013-07-07 00:39:35 -04:00
Jean-Marc Valin
92a06f51a7 Disables temporal VBR for LFE 2013-07-01 16:27:07 -04:00
Jean-Marc Valin
8e3a1cbf48 Temporal VBR tuning 
Applies temporal VBR up to higher bitrates after IgorC reported it being
useful at 64 kb/s for amount=0.1
 2013-07-01 16:14:48 -04:00
Jean-Marc Valin
16ba19a95b Fixes MSVC warnings 2013-06-27 03:40:44 -04:00
Jean-Marc Valin
3c0aa8fc25 Adds "temporal VBR", which should be mostly useful at low bitrate. 
The idea is to allow more noise than the default in quiet segments.
Right now, this hurts for high bitrates , so it's gradually reduced
as the rate goes up, until it's completely disabled above 68 kb/s.
 2013-06-25 14:10:27 -04:00
Jean-Marc Valin
ee2506b2c7 Moves log2Amp inside denormalise_bands() and get rid of bandE[] 
Also get rid of the MSE measurement code which is outdated and no longer useful
 2013-06-16 20:24:52 -04:00
Jean-Marc Valin
3afc6ffff0 Don't call denormalise_bands() on silence 2013-06-16 15:40:10 -04:00
Jean-Marc Valin
39cbc45828 Fixes stupid tf calibration bugs introduced/exposed in f77410d 2013-06-13 16:13:51 -04:00
Jean-Marc Valin
28733d1281 Moves VBR calculations to a separate function. 
Does not change the behaviour of the VBR code in most cases. The only
exception is that the VBR offset is now taken into accound in the base_rate,
which will have a (very minor) impact on CVBR at low rate.
 2013-06-10 03:32:12 -04:00