The vaCreateContext do not need to specify the surfaces for the
context creation now. So we do not need to bind any surface to the
context anymore. Surfaces should be the resource belong to display
and just be used in encoder/decoder context.
The previous manner has big limitation for decoder. The context's
surface number is decided by dpb size. All the surfaces in dpb will
be attached to a gstbuffer and be pushed to down stream, and the
decoder need to wait down stream free the surface and go on if not
enough surface available. For more and more use cases, this causes
deadlock. For example,
gst-launch-1.0 filesrc location=a.h264 ! h264parse ! vaapih264dec
! x264enc ! filesink location=./output.h264
will cause deadlock and make the whole pipeline hang.
the x264enc encoder need to cache more than dpb size surfaces.
The best solution is seperating the surfaces number and the dpb size.
dpb and dpb size shoule be virtual concepts maintained by the decoder.
And let the surfaces_pool in context maintain the re-use of all surfaces.
For encoder, the situation is better, all the surfaces are just used
as reference frame and no need to be pushed to down stream. We can
just reserve and set the capacity of the surfaces_pool to meet the
request.
Fix: #147Fix: #88
Co-Author: Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/353>
Instead of using dmabuf allocator in source pad, when raw video caps
are negotiated, it uses VA allocator as before, since it is stable
in more use cases, for example transcoding, and more backend drivers.
Dmabuf allocator is only used when dmabuf caps feature is negotiated.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/352>
iHD doesn't provide a full implemention for rendering surfaces and
i965 has problems in wayland. And I suspect this path is followed
by other driver implementations.
This patch demotes the rank of vaapisink to secondary, so it will
not be autoplugged avoiding bad experience of users.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/336>
Registering only stream's DBP size number of surfaces for decoding VA
surfaces brings issues for certain streams. This change register all
possible number of reference surfaces in a stream, which is 16.
Fixes: #94
The h265 encoder just support tune mode:
(0): none - None
(3): low-power - Low power mode
So, no need to check and set the high compression parameters.
And by the way, the current ensure_tuning_high_compression manner
of choosing the hightest profile idc as the best compression profile
is not correct. Unlike h264, in h265 the higher profile idc number
does not mean it has more compression tools, and so it has better
compression performance. It may even be un-compatible with the lower
profile idc. For example, the SCREEN_CONTENT_CODING profile with idc
9 is not compatible with 3D_MAIN profile with idc 8.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/348>
Right now, all outputs are handled. The means that the registry object for
all but the last are leaked. As a result the sizes are not used correctly.
With two outputs, at first the mode and physical size of the second output
are used. If the first output changes the mode, then the physical size of
the second output is used in combination with the resolution of the first
output. The resulting pixel aspect ratio is incorrect.
There seems to be no way to determine on which output the window is shown,
so just use the first one to get consistent results.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/341>
When the element's state changes to NULL, it can still receive
queries, such as the image formats. The display is needed in such
queries but not well protected for MT safe.
For example, ensure_allowed_raw_caps() may still use the display
while it is disposed by gst_vaapi_plugin_base_close() because of
the state change.
We can keep the display until the element is destroyed. When the
state changes to NULL, and then changes to PAUSED again, the display
can be correctly set(if type changes), or leave untouched.
Fix: #260
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/343>
These properties are used for support of tile encoding. We just
support uniform mode of tile encoding, that is, separating picture
equally by (num-tile-cols X num-tile-rows).
According to HEVC spec A1, the max number of tiles in column is 20
and in rows is 22, so add two constant definitions.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/294>
We need to use the chroma_format_idc as the index for getting the
SubWidthC and SubHeightC values as the spec 6.1(table 6-1) defines.
The wrong SubWidthC or SubHeightC make us calculate a wrong right
or bottom offset for crop size and generate garbage in output.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/334>
