There are three framerate conversion algorithms described in
<https://github.com/Intel-Media-SDK/MediaSDK/blob/master/doc/mediasdk-man.md>,
interpolation is not implemented so far and thus distributed timestamp algorihtm
is considered to be more practical which evenly distributes output timestamps
according to output framerate. In this case, newly generated frames are inserted
between current frame and previous one, timestamp is calculated by msdk API.
This implementation first pushes newly generated buffers(outbuf_new) forward and
the current buffer(outbuf) is handled at last round by base transform automatically.
A flag "create_new_surface" is used to indicate if new surfaces have been generated
and then push new outbuf forward accordingly.
Considering the upstream element may not be the msdk element, it is necessary to
always set the input surface timestamp as same as input buffer's timestamp and
convert it to msdk timestamp.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2418>
all msdk output surfaces come from out_alloc_resp, so the buffer count is not resizable.
we need set min_buffers, max_buffers to same size.
steps to reproduce
1. ffmpeg -f lavfi -i testsrc=duration=10:size=320x240:rate=30:decimals=3 -pix_fmt yuv420p -c:v libx265 ~/bits/hevc/test.265
2. GST_GL_PLATFORM=egl gst-launch-1.0 -v filesrc location=~/bits/hevc/test.265 ! h265parse ! msdkh265dec ! msdkvpp ! queue ! glimagesink
you will see error like this:
ERROR default gstmsdkvideomemory.c:77:gst_msdk_video_allocator_get_surface: failed to get surface available
ERROR msdkbufferpool gstmsdkbufferpool.c:270:gst_msdk_buffer_pool_alloc_buffer:<msdkbufferpool2> failed to create new MSDK memory
ERROR msdkvpp gstmsdkvpp.c:297:create_output_buffer:<msdkvpp0> failed to create output video buffer
ERROR msdkdec gstmsdkdec.c:699:gst_msdkdec_finish_task:<msdkh265dec0> Failed to finish frame
ERROR msdkdec gstmsdkdec.c:1085:gst_msdkdec_handle_frame:<msdkh265dec0> Failed to finish a task
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1278>
This patch fixed compiler warning below:
[1/4] Compiling C object 'sys/msdk/dc44ea0@@gstmsdk@sha/gstmsdkvpp.c.o'.
../../gst-plugins-bad/sys/msdk/gstmsdkvpp.c: In function
‘gst_msdkvpp_context_prepare’:
../../gst-plugins-bad/sys/msdk/gstmsdkvpp.c:214:7: warning: suggest
parentheses around operand of ‘!’ or change ‘&’ to ‘&&’ or ‘!’ to ‘~’
[-Wparentheses]
Our context is non-persistent, and we propagate it throughout the
pipeline. This means that if we try to reuse any gstmsdk element by
removing it from the pipeline and then re-adding it, we'll clone the
mfxSession and create a new gstmsdk context as a child of the old one
inside `gst_msdk_context_new_with_parent()`.
Normally this only allocates a few KB inside the driver, but on
Windows it seems to allocate tens of MBs which leads to linearly
increasing memory usage for each PLAYING->NULL->PLAYING state cycle
for the process. The contexts will only be freed when the pipeline
itself goes to `NULL`, which would defeat the purpose of dynamic
pipelines.
Essentially, we need to optimize the case in which the element is
removed from the pipeline and re-added and the same context is re-set
on it. To detect that case, we set the context on `old_context`, and
compare it to the new one when preparing the context. If they're the
same, we don't need to do anything.
Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/946
Split it out into a separate function with early exits to make the
flow clearer, and document what the function is doing clearly.
No functional changes.
In theory it should not happen but it happened to me
in some cases where it failed to allocate some video
buffers so this was a consequence of a corner case.
Better to be safe than sorry.
Returning MFX_WRN_INCOMPATIBLE_VIDEO_PARAM means MSDK detects some
incompatible parameters but it is resolved, and we may not regard
MFX_WRN_INCOMPATIBLE_VIDEO_PARAM as a fatal error. In this fix,
GST_FLOW_OK is returned but with a warning message so that a pipeline
may run to the end.
video-direction property is common property in gstreamer. In addition,
both mirroring & rotation properties are marked as deprecated,
video-direction will override mirroring & rotation properties when they
are set explicitly
Fix https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/1058
It is possible that the output region size (e.g. 192x144) is different
from the coded picture size (e.g. 192x256). We may adjust the alignment
parameters so that the padding is respected in GstVideoInfo and use
GstVideoInfo to calculate mfx frame width and height
This fixes the error below when decoding a stream which has different
output region size and coded picture size
0:00:00.057726900 28634 0x55df6c3220a0 ERROR msdkdec
gstmsdkdec.c:1065:gst_msdkdec_handle_frame:<msdkh265dec0>
DecodeFrameAsync failed (failed to allocate memory)
Sample pipeline:
gst-launch-1.0 filesrc location=output.h265 ! h265parse ! msdkh265dec !
glimagesink
msdkenc supports CSC implicitly, so it is possible that two VPP
processes are required when a pipeline contains msdkvpp and msdkenc.
Before this fix, msdkvpp and msdkenc may share the same context, hence
the same mfx session, which results in MFX_ERR_UNDEFINED_BEHAVIOR
in MSDK because a mfx session has at most one VPP process only
This fixes the broken pipelines below:
gst-launch-1.0 videotestsrc ! video/x-raw,format=I420 ! msdkh264enc ! \
msdkh264dec ! msdkvpp ! video/x-raw,format=YUY2 ! fakesink
gst-launch-1.0 videotestsrc ! msdkvpp ! video/x-raw,format=YUY2 ! \
msdkh264enc ! fakesink
../subprojects/gst-plugins-bad/sys/msdk/msdk.c(61): error C2065: 'MFX_FOURCC_RGB565'
The minimum required version for the format seems to MFX_VERSION >= 1028
This make the pipeline below works:
gst-launch-1.0 videotestsrc num-buffers=1 ! msdkvpp ! \
video/x-raw,format=UYVY ! filesink location=a.yuv
Once https://github.com/intel/media-driver/pull/526 in the media-driver
is merged, the pipeline below also works:
gst-launch-1.0 videotestsrc num-buffers=1 ! msdkvpp ! \
video/x-raw\(memory:DMABuf\),format=UYVY ! filesink location=a.yuv
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
According to msdk spec, there are two ways to enable filters:
1: Filters can be enabled by adding a filter ID
to mfxExtVPPDoUse. In this case, default filter parameters are used
2: Add filter configuration structures directly to mfxVideoParam.
Using 1 with 2 is optional but legal. Unfortunately it won't work
with some specific use cases like Detail/EdgeEnhancement.
Let's stick with option2 which works fine for all VPP operations.
https://bugzilla.gnome.org/show_bug.cgi?id=796468
