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Upgrade qmlglsink to 1.18.6 #3

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This PR upgrades to qmlglsink to 1.18.6 in qgroundcontrol branch, keeping qgcroundcontrol's changes on top of it (technically to latest available commit in the official repo).

I suggest to pull qgroundcontrol2 branch from my repo and push it into mavlink/gst-plugins-good as is, instead of merging.

thaytan and others added 30 commits July 10, 2020 16:42
Fixed to 1920x1080 h264 regardless of caps.
Support caps negotiation for H.264 frame size and framerate.

Add bitrate, saturation, brightness, contrast, sharpness properties.
Add properties for controlling various parts of the capture
Merge all changes for new features from upstream
raspberrypi userland, up to commit 0de0b2
Allow birate=0 and implement the quantisation-parameter property

Fixes thaytan/gst-rpicamsrc#21
…spacing to -1 (auto)

This plus other recent commits mostly fix
bug thaytan/gst-rpicamsrc#16
This ensures the encoder is created with the profile
negotiated with downstream
Don't apply timestamps based on output time from the encoder,
but use the MMAL STC and capture PTS to generate a GStreamer
timestamp that more accurately resembles the input (and would
preserve reordering should the encoder ever add B-frames).

Fixes thaytan/gst-rpicamsrc#16
Current to b69f807ce59189457662c2144a8e7e12dc776988

No integration of stereoscopic support as yet
tp-m and others added 30 commits June 2, 2021 19:24
On Windows with MSVC, jpeg_header_size would end up 2 bytes larger
than it should be. This then leads to the first 2 bytes of the
actual jpeg image data to be dropped, because we think those
belong to the header, which results in an undecodable image when
reconstructed in the depayloader.

What happens is that when the compiler evaluates

  jpeg_header_size = mem.offset + read_u16_and_inc_offset_by_2(&mem);

it actually uses the mem.offset value after it has been increased
by the function call on the right hand size of the equation.

From section 6.5 of the C99 spec:

  3. The grouping of operators and operands is indicated by the syntax [74].
     Except as specified later (for the function-call (), &&, ||, ?:, and
     comma operators), the order of evaluation of subexpressions and the
     order in which side effects take place are both unspecified.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/issues/889

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1003>
The only other place where these queued buffers are removed, is in
setCaps() but that is not called at all on shutdown so this list of
buffers could not be removed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1005>
… QML

We don't know exactly when QML will stop using them but it should be
safe to unref them after at least 2 more buffers were bound.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1009>
SO_SNDBUF has been undefined on Windows because of missing WinSock2.h
include. And don't use native socket functions (e.g., setsockopt())
if code is expected to be built on Windows. We don't link ws2_32.lib
for this plugin.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1026>
They're based on per-stream information and that should be reset
whenever going to READY state.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1027>
… identity` if no compression should be used

Some servers respond with gzip-encoded responses regardless of whether
the request allowed it to be used in the response. By always having the
content decoder enabled, these invalid responses can be decoded
correctly while for well-behaving servers the `compress` property
selects between allowing compressed responses or not.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/issues/833

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1054>
Updating of codec_data in the caps is important to propagate changes
in sps/pps/vps via NALs. Without this, downstream does not renegotiate
when upstream changes resolution.

The comment referring to rtph264pay is from 2015 and is out of date.
rtph264pay stopped doing that in 2017 with commit
dabeed5

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1025>
… variants

e.g. when exporting an opaque image, yet with alpha channel.

Apple ProRes certification requires that, when a ProRes-writing
application *knows* that the entire frame is opaque, the application
writes only RGB without alpha even when the clip is RGBA. For that,
this tiny change allows the app to override pixel depth when writing ProRes.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1062>
Might be 24bpp in case an alpha channel is coded but
the image is always opaque.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1062>
When re-using streams, we *do* need to push a `stream-start` event downstream if
we previously were EOS'd. Failure to do that would never remove the EOS status
on all downstream elements and cause weird issues.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1068>
…c_data

This works around some AVI files storing byte-stream data in the
codec_data. The previous workaround was only checking for
0x00000001 (4 bytes) instead of 0x000001 (3 bytes).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1073>
Seek events are sent upstream on each sink, so if we receive multiple
seeks with the same seqnum, we must only perform one seek, not N seeks
where N = the number of sinks in the pipeline connected to rtspsrc.

This is the same thing done by demuxers like qtdemux or matrsokademux.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1075>
stop is not used after this point, nor do we create a new segment
here since 84725d6

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1076>
… aligned

In case of interlaced JPEG file, we are doubling stride.
The scratch scan line should take account of it as well.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1042>
AAC codec_data is a just collection of AAC profile, samplerate, and
channels. We can know samplerate and channels from parsed
SampleEntry data. Although the AAC profile is unknown there,
let's assume it as AAC-LC like we've been doing for the version 1
atom.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1100>
need apply video alignment info on video meta, downstream
element can get buffer alignment from video meta

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1106>
If padded height is greater, buffer bytesused could be larger than plane length,
and cause VIDIOC_QBUF failure.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1107>
In libshout >=2.4.2 shout_open() can return SHOUTERR_RETRY in addition
to SHOUTERR_BUSY.

The nonblocking example in libshout fixes the problem in a similar
way, as mentioned by the author in this issue:
https://gitlab.xiph.org/xiph/icecast-libshout/-/issues/2316

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/issues/848

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1108>
since `gst_caps_replace()` and `gst_pad_set_caps()` both ref the caps and neither of them takes the ownership of the caps -> it must be unreffed in `gst_multi_file_src_set_property()`

to test the leak (on Unix): `echo coucou > /tmp/file.txt && GST_TRACERS=leaks GST_DEBUG="GST_TRACER:7" gst-launch-1.0 multifilesrc location=/tmp/file.txt caps='txt' ! fakesink`

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1109>
The "cause" field wasn't registered as a GEnumValue, so do that.

Fixes this critical in gst_structure_to_string():

`gst_value_serialize: assertion 'G_IS_VALUE (value)' failed`

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1111>
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