In gst-msdk, a mfx session may be shared between different gst
elements, each element tries to set the frame allocator. However, per
the MSDK documation[1], the behavior is undefined if reset the frame
allocator while the previous allocator is in use. Fortunately all
elements use the same frame allocator, so we can avoid to call
MFXVideoCORE_SetFrameAllocator again.
[1]: https://software.intel.com/en-us/node/628430#MFXVideoCORE3
If so, BGRA is the preferred output format hence BGRA will be selected
as input format by default, e.g. in the pipleline below, BGRA instead of
NV12 is selected without renegotiation, so we can avoid the NV12 issue
(see commit 3f2314a) by default.
gst-launch-1.0 videotestsrc ! msdkvpp ! glimagesink
Otherwise MFXVideoVPP_Init will fail because it is called twice without
a close.
Example pipeline:
gst-launch-1.0 videotestsrc ! msdkvpp ! glimagesink
Sometimes glimagesink emits GST_EVENT_RECONFIGURE event which results
in that MFXVideoVPP_Init is called twice, then get the negotiation
failure below:
0:00:00.093715518 21218 0x558ef56231e0 ERROR msdkvpp
gstmsdkvpp.c:995:gst_msdkvpp_initialize:<msdkvpp0> Init failed
(undefined behavior)
WARNING: from element /GstPipeline:pipeline0/GstMsdkVPP:msdkvpp0: not
negotiated
After applying this commit, the pipeline above may run without
negotiation failure, however NV12 layout in dmabuf mode is selected in
renegotiation, the display image is corrupted due to the NV12 issue which
was mentioned in commit 3f2314a. Some other fixes are needed to avoid
renegotiation by default
In general, we should assume any unhandled error is
non-recoverable.
In the flush frames loop, some error states can cause us
to never increment the task and therefore we get stuck
in an infinite loop and generate GST_ELEMENT_ERROR
over and over again. This eventually consumes all
system memory and triggers OOM. Thus, assume the worst
and break out of the loop upon the first "unhandled" error.
https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/859
When either the source or sink goes from PLAYING -> NULL -> PLAYING,
we call _reset() which sets client_needs_restart, and then we call
prepare() which calls IAudioClient_Start(), so we don't need to call
it again in src_read() or sink_write(). Unlike when we're just going
PLAYING -> PAUSED -> PLAYING.
configure_mode_setting() keeps a ref on tmp_kmsmem which is released in
gst_kms_sink_show_frame().
But if for some reason configure_mode_setting() is re-called before
showing a frame or if none is showed this memory was leaked.
ACM is an ancient legacy API, and there's no point in
keeping it around for a licensed mp3 decoder now that
mp3 patents have expired and we have a decoder in -good.
We didn't ship this in cerbero anyway. If there's a good
case for the AAC encoder (which is LC only anyway) someone
should write a new plugin based on current APIs, that can
actually be built out of the box.
Fixes#850
As a side-effect we can now actually store the line offset in the
line21dec element, and have to perform fewer transformations in the
decklink elements (which were also buggy as they assumed a single byte
triplet per meta).
We will add more profiles in the sink caps of msdkh265enc, so let
msdkh265enc re-add the sink pad template. Note this change doesn't
impact any capability
Fixes the time calculations when dealing with a slaved clock (as
will occur with more than one decklink video sink), when performing
flushing seeks causing stalls in the output timeline, pausing.
Tighten up the calculations by relying solely on the internal time
(from the internal clock) for determining when to schedule display
frames instead attempting to track pause lengths from the external
clock and converting to internal time. This results in a much easier
offset calculation for choosing the output time and ensures that the
clock is always advancing when we need it to.
This is fixup to the 'monotonically increasing output timestamps' goal
in: bf849e9a69
CodecProfile will be set in MFXVideoDECODE_DecodeHeader() to match
the input stream. Setting the hard-coded profile here will mislead
user that msdkh265dec supports a special profile only.
Previously alloc_info is initialized when both thiz->initialized
and thiz->allocation_caps are true, but only thiz->initialized is
checked when alloc_info is used.
