progressive decode, avoid storing DRED decoder state

Now generating the extension in place once all the data is already
in the right place.

Adding a 'D' byte to signal the DRED experiment, along with a version
number byte. This entire commit will be reverted once DRED is finalized
and given a non-experimental extension number.

Fixes "FEC buffer full" issue

Properly re-initialize DRED (only) when needed

Probably still has many bugs

Now only running the decoder on "received" packets

Unlike OPUS_SET_INBAND_FEC(1), the encoder does not necessarily
switch to SILK if we have music.

Even if the redundancy is ignored, the final range from the decoder is
needed for testing.

Reviewed by Timothy B. Terriberry.

In https://github.com/xiph/opus/issues/253, the encoder generates a
Hybrid frame with redundancy, to switch to CELT-only mode, and then
activates DTX immediately afterwards.  The decoder ran Hybrid PLC,
which isn't right.  Use CELT PLC instead if there was already a
transition to CELT via redundancy at the end of the previous frame.

Also do not use a stale CELT decoder to decode a second redundancy
frame when the first redundancy frame for a transition from SILK-only
mode was lost.  Instead of mixing in old audio from the last time
that CELT was used, ignore the second redundancy frame in this case.
Alternatively the CELT decoder could be reset before decoding, but
it would not be ready until after the 2.5 ms of audio that is needed.

Reviewed by Jean-Marc Valin.

encoder

This was introduced in February, and fails the corresponding
check in gitlab ci runs.

Also indent the subsequent lines to match and correct typos.

Signed-off-by: Mark Harris <mark.hsj@gmail.com>

Jesús de Vicente Peña authored 4 years ago and Felicia Lim committed 4 years ago

Signed-off-by: Felicia Lim <flim@google.com>

Tested on:
 - Linux/x86* with gcc
 - Android armv7 arm64 x86 x86_64 with clang
 - Windows x86 x86_64 with Visual Studio 2017
 - Windows x86 x86_64 with MinGW
 - macOS x86_64 with clang
 - iOS arm64 x86_64 with clang

Co-authored by: Nirbheek Chauhan <nirbheek@centricular.com>

https://gitlab.xiph.org/xiph/opus/-/merge_requests/13

Nirbheek Chauhan authored 4 years ago and Mark Harris committed 4 years ago

Actually check for read errors instead of just storing the
return value in a variable that then never gets checked.

Also fixes "conversion from 'size_t' to 'int', possible loss
of data" compiler warnings on Windows with MSVC caused by
storing the size_t returned by fread() into an int variable.

Signed-off-by: Mark Harris <mark.hsj@gmail.com>

Marcus Asteborg authored 4 years ago and Jean-Marc Valin committed 4 years ago

Build time improvement, for MSVC use intrin0.h instead of intrin.h and remove usage of stdio.h in production code

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

Jesús de Vicente Peña authored 5 years ago and Felicia Lim committed 5 years ago

Signed-off-by: Felicia Lim <flim@google.com>

Jesús de Vicente Peña authored 5 years ago and Felicia Lim committed 5 years ago

Reland "Fixes to the the activity flag that is passed to Silk so it represents the final activity flag used in the DTX decision"

This flag was modified after calling the Silk encoder function. This commit corrects that behavior by introducing those modifications before calling the Silk encoder.

Slightly modified comments by Felicia Lim

Signed-off-by: Felicia Lim <flim@google.com>

Revert "Fixes to the the activity flag that is passed to Silk so it represents the final activity flag used in the DTX decision"

This reverts commit ea3b30f9.