Scenario is using wayland with this pipeline: videotestsrc ! glupload ! qml6glsink.
First pipeline and qml construction works just fine. However if all GStreamer
and QML scenegraph resources are removed, GStreamer will call eglTerminate() and
sever the connection to the display server for Qt. When Qt attempts to do any
further GL operations like construct a new QML scene, it can crash in any number
of places as libEGL will start returning NULL or other unexpected values.
What we really need is to ensure that if an external API (e.g. Qt) will
eventually call eglTerminate(), there is no need for GStreamer to call
eglTerminate(). This is what the foreign display flags allows setting.
There is also another possible scenario where one may like to make GStreamer
assume ownership of an EGLDisplay and thus eventually call `eglTerminate()`. As
such, it is now also possible to mark an GstGLDisplayEGL as non-foreign.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8504>
Add new property to support application allocated GstCudaMemory.
CUDA memory alloc/free is a global device synchronization point
as if launching CUDA kernel on default CUDA stream. To avoid the global
synchronization, we added stream-ordered allocation support
which allocates CUDA memory asynchronously.
However, NVENC does not allow registering the stream-ordered
allocated memory. Thus encoder was allocating normal CUDA
memory in case that input CUDA memory is stream-ordered type.
In this commit, newly introduced property will allow application
to provide encoder with GstCudaBufferPool. Application can
preallocate sufficient amount of CUDA memory in advance
to avoid global device synchronization while pipeline is running.
For now, this pool is used only if input CUDA memory is allocated
via stream-ordered-allocation
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8516>
Cropping parameters were being miscalculated - getting
the output width/height wrong when an x/y crop offset
was given.
Cropping was also incorrectly being applied twice (because at
some point after the convertframe code was written,
`videocrop` also started paying attention to the
GstVideoCropMeta, but not in useful ways for this purpose). Add
a buffer probe to strip the crop meta from the input buffer
so videocrop can do its job correctly.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8526>
transform_caps() from the upload methods can return NULL in some cases, so fall
back to empty caps in that case.
This can happen if "Raw Data" is the currently selected method and new caps with
memory:DMABuf caps feature are negotiated.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8514>
The property is defined as:
> The difference between incoming timestamp and next timestamp must exceed
> the given value for audiorate to add or drop samples.
so if the gap duration < tolerance, we should not act.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8498>
AV1 specification [1] define 2 AV1 raw bitstreams storage
formats without containers:
- OBU in chapiter 5.2
- Annexb in chapiter 11.
Implement a detection function for the both cases mostly
by testing OBU forbidden, type, has_size_field and reserved bits.
For annexb case testing if temporal unit size, frame unit size and
obu length are valid. If they are check that the first OBU is
a temporal delimiter.
[1] https://aomediacodec.github.io/av1-spec/av1-spec.pdf
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8502>
The parent class will allow the handle to be reused at the end of the function.
If we are still modifying the released fence, then another thread can acquire
the fence while we are still clearing some of its data and produce a data race
or a leaked fence depending on which thread wins.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8491>
This fix handles the case where the order of components in the cmpd box
does not correspond to the order used for a specific track. That
is the case where the uncC component_index values are something
other than 0, 1, 2, 3.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8483>
