OPUS_EXPORT was conditionalized on OPUS_BUILD, so that symbols
are export based on public header declarations when building
opus as a library, but not when those headers are included in
other programmes. This doesn't address the case when the opus
source and its caller are both included in the same monolithic
build.

In that case we want to define OPUS_BUILD, to indicate that we
are compiling the codec source, but not export the symbols. To
support this, only define OPUS_EXPORT if it is not already defined.
This allows build scripts to -DOPUS_EXPORT and override the
platform-specific attribute decortation in opus_defines.h.

Based on a patch by Sergey Ulanov.
http://git.chromium.org/gitweb/?p=chromium/deps/opus.git;a=commitdiff;h=6304b9628cb7244e3cc78f740aeb6659562f1857

We always define OPUS_BUILD, so this code has no effect.
Likewise there is no reason for it to be conditional.
According to Jean-Marc it's left over from when we had
an alternate CELT_BUILD define.

This also adds some extra casts to shut up compiler warnings
 reported on MSVC 6 where there is implicit truncation for the
 arguments of bitexact_cos().
Lacking access to CLZ/BSR will make the code a fair bit slower but
 that is better than failing to compile.

Made RFC6716 a normative reference, removed non-sensical constraints,
updated contact info, ...

Thanks to Randell Jesup for the feedback.

This allows the sender parameters sprop-maxcapturerate and
 sprop-stereo to be specified on a per-SSRC basis, instead of just
 per m-line.

For complete details on what was changed, see
 <http://www.ietf.org/mail-archive/web/codec/current/msg02941.html>

Instead of using the average energy over the frame, we use a half-way
point between the average energy and the max energy.

Passing 'enable' as an argument to AM_MAINTAINER_MODE flips the
default to enabled, rather than disabled until automake 1.11.
This is a safer default for a developer-oriented library.

./configure --disable-maintainer-mode is still available for
packagers who what to preserve the upstream build distribution.

On earlier automake versions, the argument appears to have no
effect, so there is no behaviour change for developers using
older autotools.

Based on a patch for opusfile by ron@debian.org.

Nils Wallménius authored 12 years ago and Jean-Marc Valin committed 12 years ago

Remove two now redundant zeroing loops

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Makefile.draft got renamed to Makefile.unix in e91dfa0f, but
 build_draft.sh was not updated.

shorter dependencies

Also, moves the dynalloc code to a separate function

These files has unix line endings, while the other
project files have dos line endings.

I hoped this would fix the link error about corrupt
or invalid files with these projects, but it doesn't.
Running 'Update project files...' in the VS2012 IDE
is a work around, but it just adds a <PlatformToolset>
element to each <PropertyGroup> and a line ending at
the end of the file.

Commits ae0e2ca8 and 6906210c split encode and decode
support into separate files to help reduce the footprint
of decode-only builds.

This commit adds the new source files to the MSVC
project files, fixing that build.

Naive builders, particular on Windows without git installed,
would get builds calling themselves 1.0.1 even though master
has diverged significantly from the 1.0.x series at this point.

We should update this file both before and after release.

max_decay was being computed based on the small number of bits allocated
to CELT. It's now set to the max value (16) when in hybrid mode.

Also forces SPREAD_NORMAL in hybrid mode

This prevents issues on speech where tf would undo what transient_analysis()
found

No need to allocate for the low-band

Reduce size of "norm" because we never need it for the last band

Delays stack allocations as much as possible, and makes some of these
allocations conditional.

Doing the overlap coying in the same OPUS_MOVE() as the rest of the synthesis
memory. Also, there was a missing OPUS_MOVE() in the PLC for the hybrid/CNG
case.

Nils Wallménius authored 12 years ago and Jean-Marc Valin committed 12 years ago

Use the output buffer directly for imdct output, avoiding use of an
intermediary buffer and copying from it. This works because the output
buffer is offset to always be continous with the overlap buffer in the
decoder. Adjust encoder resynth code to have the same buffer layout.

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

It should now validate with the Python version of the xml2rfc tool.