Fixes gstreamer/gst-docs#36

The included libav requires it now. Otherwise the builds fails with:

  CCLD     libgstlibav.la
build-i686-w64-mingw32/gst-libs/ext/.libs/libavutil.a(random_seed.o): In function `av_get_random_seed':
gst-libav-1.16.0/gst-libs/ext/libav/libavutil/random_seed.c:126: undefined reference to `BCryptOpenAlgorithmProvider@16'
gst-libav-1.16.0/gst-libs/ext/libav/libavutil/random_seed.c:129: undefined reference to `BCryptGenRandom@16'
gst-libav-1.16.0/gst-libs/ext/libav/libavutil/random_seed.c:130: undefined reference to `BCryptCloseAlgorithmProvider@8'
collect2.exe: error: ld returned 1 exit status

Convert mastering display information (a.k.a HDR static metadata) and
content light level information provided by FFMPEG to Gstreamer.

Yeongjin Jeong authored Apr 29, 2019 and Sebastian Dröge committed Apr 29, 2019

The version of libavutil is printed in the log instead of libavcodec
because avutil_version() returns LIBAVUTIL_VERSION_INT. This can be confusing,
so we should be replace it with avcodec_version().

There are decoders that need to be drained if they work on multi-threads,
even if AV_CODEC_CAP_DELAY is not set.

There are decoders that need to be drained if they work on multi-threads,
even if AV_CODEC_CAP_DELAY is not set.

See gstreamer/gst-libav#41 (comment 142808)

The switch to the new ffmpeg property system changed the type of the
bitrate property from int to int64, which potentially breaks many
existing applications at runtime as properties are usually set via
g_object_set().

As such, override the type to int until GStreamer 2.0.

(this is only used for CEA 708 raw data). another element
such as mpegvideoparse may have already added the meta.

.. and other formats where ffmpeg gives us multiple
subframes per input frame.

Since we now support non-interleaved audio, we can't
just concat buffers any more. Also, audio metas won't
be combined when buffers are merged, so when we push
out the combined buffer we'll look at the meta describing
only the first subframe and think it covers the whole
frame leading to stutter/gaps in the output.

We could fix this by copying the output data into a new
buffer when we merge buffers, but that's suboptimal, so
let's add some API to GstAudioDecoder to push out subframes
and use that instead.

#49

The start time is supposed to be the ts of the first frame.
FFmpeg uses fractions to represent timestamps and the start time may use a
different base than the frame pts. So we may end up having the start
time bigger than the pts because of rounding when converting to gst ts.

See gstreamer/gst-libav#51
for details.

It must be freed with av_opt_freep_ranges as documented.

From ed78bee to 59cb678

This commit adds a .gitlab-ci.yml file, which uses a feature
to fetch the config from a centralized repository. The intent is
to have all the gstreamer modules use the same configuration.

The configuration is currently hosted at the gst-ci repository
under the gitlab/ci_template.yml path.

Part of gstreamer/gstreamer-project#29

Edward Hervey authored Nov 08, 2018 and Edward Hervey committed Nov 08, 2018

Allows actually decoding such streams :)

Remove the git directory

This fixes gstreamer/gst-libav#43

When building with MSVC, if the 3rd operator is a double, the entire
expression always promoted double, and is then cast to int64.

When TRUE, this evaluates to (gint64) (gdouble) (INT64_MAX)
which overflows to INT64_MIN on MSVC, but not on C99 compilers.

This causes us to fail the g_return_if_fail inside g_param_spec_int64
when built with MSVC.

This exposes support for the "iff" demuxer. This is a general purpose
format, and the reason to expose this now is to allow reading DSD data
(which is supported via a variant called DSDIFF).

More information at:
  https://wiki.multimedia.cx/index.php?title=IFF
  https://www.loc.gov/preservation/digital/formats/fdd/fdd000245.shtml

This matches all other plugins in the other gstreamer repos. This is
also necessary for generating the correct libtool archive (.la) files
in Cerbero which are needed for static linking on Android and iOS.

https://github.com/mesonbuild/meson/pull/4169