commit a2cc77cb
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Thu Nov 4 13:11:21 2010 -0400

    Adding a switch to enable the post-filter (off by default)

commit 8e860dc0
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Thu Nov 4 11:57:12 2010 -0400

    Allowing pitches up to 3000 Hz

commit 837412d3
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Wed Nov 3 20:47:11 2010 -0400

    Pitch estimation tuning to prevent some cases of pitch halving

commit 34e20f24
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Nov 3 16:31:51 2010 -0400

    Resynthesis now purely a compile-time option with RESYNTH

commit d83fb5a9
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Nov 3 16:28:25 2010 -0400

    Fixes a divide by zero in remove_doubling()

commit bb91e05b
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Nov 3 15:55:48 2010 -0400

    Bring back resynthesis with RESYNTH macro

commit 31fe6f6b
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Tue Nov 2 17:55:04 2010 -0400

    Tuning the allocation tilt to give more bits to higher frequencies.

    Especially useful now that the post-filter can reduce low freq noise.

commit 919ba48f
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Mon Nov 1 17:27:19 2010 -0400

    C89 fix

commit ee0dbb18
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Mon Nov 1 11:45:10 2010 -0400

    Complete fixed-point port of the pitch code (I think).

commit 4c7b3fd1
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Mon Nov 1 10:55:43 2010 -0400

    More fixed-point pitch gain work

commit 26f14121
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Mon Nov 1 10:39:25 2010 -0400

    Fixed-point version of the pitch gain calculation code

commit 27c73d00
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Sun Oct 31 16:50:26 2010 -0400

    Some more fixed-point work in remove_doubling()

commit 59354672
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Sun Oct 31 09:57:36 2010 -0400

    Fixed a stupid fixed-point pf bug in the gain handling

commit be9e7dab
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Sat Oct 30 01:52:09 2010 -0400

    Fixed-point: fixed frac_div32() that was broken a few commits ago.

commit 5b06270a
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Fri Oct 29 17:45:44 2010 -0400

    This fixes VBR when encoding the pitch period with raw bits

commit 10e04884
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Fri Oct 29 16:50:31 2010 -0400

    Pitch period is now encoder with equal probability for each octave (rather than each lag).

    Max pitch gain allowed is now 0.625.

commit ca19396c
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Fri Oct 29 16:00:01 2010 -0400

    More fixed-point post-filter work

commit f3e42fde
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Fri Oct 29 14:39:23 2010 -0400

    More fixed-point work for the prefilter/postfilter

commit db945132
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Fri Oct 29 14:14:02 2010 -0400

    Making the pitch estimation work in fixed-point

    Even if there's still lots of float operations left.

commit acb3f96e
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Fri Oct 29 10:57:39 2010 -0400

    Making the PLC code consistent with the prefilter/postfilter

commit 8f64f597
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Thu Oct 28 00:33:53 2010 -0400

    More tuning for remove_doubling()

commit 0c08f2ee
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Oct 27 17:48:02 2010 -0400

    Doing an interpolation step to improve the accuracy of the pitch estimate

    Also increasing the gain slightly.

commit 23d303e9
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Oct 27 16:56:42 2010 -0400

    Implements a fixed 3-tap prefilter/postfilter to make the gain roll off with frequency

commit 881c5928
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Oct 27 14:47:30 2010 -0400

    Partially whitening the down-sampled signal before the pitch search

commit 4a8687de
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Oct 27 14:27:47 2010 -0400

    pitch_search() no longer computes the gain

commit a7f85bb6
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Oct 27 14:00:53 2010 -0400

    remove_doubling() now works on the down-sampled signal

commit 06cb70e8
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Oct 27 11:28:53 2010 -0400

    Simplification to the pitch continuity code

commit 5201927c
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Wed Oct 27 11:04:02 2010 -0400

    Some more pitch doubling prevention code

commit 7ef63fbe
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Wed Oct 27 06:49:28 2010 -0400

    Minor fix

commit eb37eaab
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Tue Oct 26 18:32:25 2010 -0400

    Enforcing some pitch continuity

commit 751ef6ed
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Tue Oct 26 17:29:47 2010 -0400

    Code for preventing pitch doubling/halving

commit c12647ec
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Tue Oct 26 00:04:34 2010 -0400

    Finally getting perfect reconstruction when pitch changes

    Post-filter now delays the filter coefs by the overlap so that the pre-filter
    and post-filter are synchronised.

commit f854311d
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Mon Oct 25 14:59:13 2010 -0400

    Very simple/inefficient signalling of the prefilter period/gain

commit b4e12154
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Mon Oct 25 14:09:17 2010 -0400

    using the actual pitch gain

commit e7cd4f07
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date:   Mon Oct 25 12:16:11 2010 -0400

    Adding some pitch prediction though side information still isn't coded

commit 77a03aa2
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Mon Oct 25 00:12:48 2010 -0400

    prefilter implemented as well

commit a3fd81b6
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Sun Oct 24 01:14:10 2010 -0400

    Implementing Raymond Chen's comb filter idea

    So far, only the post-filter is there.

Oops. The deemphasis was called on the wrong signal!

Fix crashes with VBR for short duration frames and very low bitrates. This may, however, cause the encoder to violate the rate target at insanely low rates.

This also generally improves VBR behavior by more carefully accounting
for rounding.

Switch example tools to use VBR and 960 sample frames by default on the basis that if the user doesn't have any particular requirements that they probably want this.

Minor change in the VBR behavior to hot-start with some internal state
parameters which were observed to be quite consistent across bitrates,
framesizes, and content. This also prevents it from completely burning
the reserve capacity on the first frame if its a short.

Also switch some maximum frame sizes to match the OPUS draft maximums.

Also making use of alloc_trim_analysis() again because the effect of
inter-channel correlation on the bitstream is really in terms of absolute
number of bits/samples.

The idea here is that it's better to fold a higher band -- even if it was
coded less accurately -- than a lower band that may have a different
temporal structure.

Also fixed a fixed-point breakage.

Previous limit was effectively 120.

Both ended up causing more harm than good (e.g. violating energy conservation)
and provided little benefit. This also saves ~3 kB code size on x86-86.

John Ridges authored 14 years ago and Jean-Marc Valin committed 14 years ago

I've been compiling CELT for 64-bit Windows and it all seems to work
fine (with the occasional benign warning message) except for one place,
and that is in "float_cast.h" where there is some inline assembly
language that gets complied for Windows. Since the Microsoft 64-bit
compiler won't allow inline assembly language (and *still* doesn't have
"lrintf").

Still need to make it use the right channel in stereo.