va: encoder: Rate control property.

Fixes: #1241
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2522>

webrtcbin: Add a prepare-data-channel GObject signal

This new signal allows data-channel consumers to configure signal handlers on a
newly created data-channel, before any data or state change has been notified.

The webrtcin unit-tests were refactored to make use of this new signal.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2427>

webrtcdatachannel: Chain to parent class constructed

And add a debug log statement.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2427>

flvdemux: Make use of the streams API if used in a streams-aware bin

This allows adding audio/video streams after 6s.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2559>

decklinkvideosink: Add 3G-SDI Level A output support

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2544>

Docs: Add the design document for DMA buffer sharing.

Co-authored-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Co-authored-by: Victor Jaquez <vjaquez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1431>

h264parser: Fix memory leaks in parse_user_data_unregistered().

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2551>

rtmp2: Fix allocation of GstRtmpMeta

Use the right size.

On 64-bit platforms, `GstMetaInfo` is larger than `GstRtmpMeta`, which
masked this bug. On 32-bit platforms, it causes crashes. Thanks to
@maxatka for discovering this.

Fixes: https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1721
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2553>

aacparse: Avoid mismatch between src_caps and output_header_type

If our downstream caps didn't intersect, we attempted to convert between
raw and ADTS stream formats, if possible. If the caps still did not
intersect, we then used the modified `src_caps` but left the
`output_header_type` unmodified.

This caused a mismatch between caps and actual stream format.

Avoid this by first copying the `src_caps` to `convcaps` for the
additional intersection tests, replacing `src_caps` if we succeed.

While we're here, clean up the code a bit and remove the `codec_data`
field from outgoing ADTS caps.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2550>

flvdemux: Actually make use of the debug category

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2552>

gstwaylandsink: Add support for the "render-rectangle" property

We already implement the `set_render_rectangle` videooverlay interface,
thus install the videooverlay property accordingly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2479>

gstwayland: Move reusable parts of the waylandsink into a library

In preparation for the new element `GstGtkWaylandSink`, move reusable
parts out of `GstWaylandSink` into the already exisiting but very
barebone library.

Notable changes include:
 - the `GstWaylandVideo` interface was dropped
 - support for `wl-shell` was dropped
 - lots of renaming in order to match established naming patterns
 - lots of code modernisations, reducing boilerplate
 - members were made private wherever possible

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2479>

opencv: Allow building against 4.6.x

Replace the broken version checks with one modeled after
`GLIB_CHECK_VERSION`.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2557>

validate: Fix running as a tracer

We need to rebuild runner.c as this is where the plugin is defined

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2555>

webrtcbin: Reject answers that don't contain the same number of m-line as offer

Otherwise, it segfaults later. Also add test to validate this.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2526>

rfbsrc: add uri interface

Adding a uri interface enables plugging in RFB/VNC sources to anything
that makes use of uridecodebin:

gst-play-1.0 rfb://:password@10.40.216.180:5903?shared=1

Use userinfo to pass user (ignored) and password, other key/value pairs
can be encoded in the query part of the URI (see shared)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1963>

gst-env: Add support for PowerShell 7

The executable binary name of "PowerShell 7" is "pwsh.exe"
which is different from system default installed
"Windows PowerShell (version 5.x or older)"

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2545>

videoparse: rename from _free to _clear

The function does not free the structure but the data
contained within.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

video: add new video-sei.h header to the list of video_headers

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

h264parse: fix leak in user data unregistered

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

test: update tests to include the new meta

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

Fix documentation

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

h264parse: add unit test for Precision Time Stamp in SEI messages

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

h264parse: fix copying of data and UUID

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

h264parse: add support Precision Time Stamp in SEI messages

Expose User Data Unregistered as a new Meta and add
API to parse Precision Time Stamp (ST 0604).

Fixes #927

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1458>

meson: cuda: Add missing override_dependency()

Required for GstCuda library to be consumed via "gstreamer-cuda-1.0"
dependency.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2539>

cuda: Fix uninitialized debug category

Make sure debug category init

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2542>

msdkav1enc: Reorder pts

This is a workaround for pts because oneVPL cannot handle the pts
correctly when there is b-frames. We first cache the input frame pts in
a queue then retrive the smallest one for the output encoded frame as
we always output the coded frame when this frame is displayable.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2089>

msdkav1enc: Add b-pyramid and p-pyramid

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2089>

msdkav1enc: Add tile for encoding

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2089>

msdk: Add msdkav1enc element

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2089>

soup: fix soup debug category

Use soup debug category in souploader
for soup plugin element load.

Inititalize properly soup utils category.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2535>

amfencoder: always empty the queue when pushing output samples

gst_amf_encoder_try_output() pushes at most one output buffer downstream
although more may be ready. As a consequence, output samples will keep
queueing up in AMFComponent whenever QueryOutput() returns AMF_REPEAT
(and do_wait is FALSE). This has negative impact on latency when the
video being encoded is a live stream.

In order to avoid it, always retrieve and push all samples available in
AMFComponent's output queue at once.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2536>

hlsdemux2: Adjust debug log level

HLS manifest might not be represented by a single common caps
when different codecs are mixed in a playlist, but it
does not seem to be a critical issue we need to warn.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2516>

basetransform: handle gst_base_transform_query_caps() returning NULL

If gst_base_transform_transform_caps() returns NULL, gst_base_transform_query_caps()
will return NULL as well.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2532>

clock: Avoid creating a weakref with every entry

Creating and destroying weakrefs takes a write lock on a global
`GRWLock`. This makes for a very contended lock when the pipeline has
many synchronizing elements.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2530>

video: Fix NV12_16L32 size calculation

The subsampling of the second plane was not taken into account, resulting in a
16bit per pixel buffers instead of 12.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2512>

basetransform: fix critical if transform_caps() returned NULL

klass->transform_caps() may return NULL, which was raising this
critical:

  GStreamer-CRITICAL **: 12:23:56.243: gst_caps_is_subset: assertion 'subset != NULL' failed

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2528>

adaptivedemux2: fix plugin/element init

In case of per features registration such as the
customizable gstreamer-full library, each
element should check that the soup library can be loaded to
facilitate the element registration.

Initialize the debug categories properly

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2348>

directshow: Fix for uninitialized debug category warning

A method in the code is used in another place (device provider)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2519>

va: Register base classes as abstract.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2521>

va: encoder: Use entrypoint type.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2521>

plugin: add Apache 2 license to known licenses

the licence in gstreamer/subprojects/gstreamer/gst/gstplugin.c
currently is defined to be one of:
LGPL GPL QPL GPL/QPL MPL BSD MIT/X11 0BSD Proprietary
The open source project for the kinesis plugin is using an
Apache 2.0 license. Because "Apache 2.0" is not one of the
supported licenses it automatically falls back to Proprietary.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2514>

va264enc: Fix typo.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2508>

va: encoder: Fix regression since commit 2042c2d4f0.

There's no need to compare with the open entrypoint to query the
encoder. This commit removes the checks to the configured entrypoint
with the parameter.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2508>

rtpptdemux: Don't GST_FLOW_ERROR when ignoring invalid packets

https://bugzilla.gnome.org/show_bug.cgi?id=741398 changed
rtpptdemux in 2014 to not post a GST_ELEMENT_ERROR on the
bus when dropping an invalid (non-RTP) packet, but still
returned GST_FLOW_ERROR upstream - so the pipeline still
stops, but now without a useful bus error.

Return GST_FLOW_OK instead, so the pipeline keeps
running. Some old telephony equipment can send invalid
packets before the real RTP traffic starts.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2520>

mfvideoencoder: Handle dynamic property update

Re-init MFT on property update to apply new encoding options

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2037>

mediafoundation: Run indent

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2037>

mfvideoenc: Remove redundant bitwise or operation

MFT_ENUM_FLAG_SORTANDFILTER_APPROVED_ONLY (0xc0) covers
MFT_ENUM_FLAG_SORTANDFILTER (0x40)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2037>

mfvideoencoder: Early terminate d3d11 interop

Shared texture will work only for the same GPU

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2037>

mfvideoencoder: Check HRESULT code as well for GPU sync

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2037>

mfvideoencoder: Don't specify keyed mutex misc flag

Current implemetation copies textures using non-keyed mutex way.
D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX is pointless

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2037>

jack: Always use jack_free as specified by the docs

Fixes a crash on Windows due to a CRT mismatch. The JACK installation
still uses MSVCRT, and we the Universal CRT for both MinGW and MSVC.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2497>

jack: Add support for detecting libjack on Windows

No source code changes were necessary to get the plugin working on
Windows with MSVC.

Run QJackCtl and audiotestsrc ! jackaudiosink just works.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2497>

vacompositor: Pass video info pointer than copying it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2496>

vacompositor: Remove useless consts.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2496>

d3d11decoder: Work around Intel DXVA driver crash

Intel DXVA driver crashes sometimes (from GPU thread) if
ID3D11VideoDecoder is released while there are outstanding view objects.
To make sure the object life cycle, holds an ID3D11VideoDecoder refcount
in GstD3D11Memory object.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2504>

ci: Make sure to always update subprojects

The command was not run in Windows jobs, better keep subprojects
handling in a single script.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2509>

qsvencoder: Bind internal texture to render target

... so that memory allocator can initialize texture with black color

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2502>

d3d11memory: Clear YUV texture with black color

We prefer black color as an initial texture color and
Direct3D11 runtime will initialize texture with zeros (except for alpha)
which is fine for RGB formats. But UV components of YUV texture
requires manual clear for black color.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2502>

tests: vaapi: remove unused header

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2503>

tests: vaapi: fix memleak in vaapioverlay test

Need to unmap the frame to ensure vaapioverlay can destruct/dispose.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2503>

tests: va: add simple vacompositor test

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2481>

msdkh265enc: Add intra refresh parameters

Note that for msdkh265enc, intra refresh parameters are only supported
under low-power mode. If these parameters are set without enabling lowpower,
they will be simply ignored.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2308>

msdkh264enc: Add intra refresh parameters

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2308>

tests: examples: Stop duplicating keyboard interaction handler code

Extract the code from QSV and use it for D3D11 and NVCODEC examples

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2468>

webrtc: fix build with older libnice versions

1) check for right macro name when checking for NICE_VERSION_CHECK

2) if libnice version is 0.1.18.1 this should not satisfy
   a NICE_VERSION_CHECK(0,1,19).

Fixes build with libnice 0.1.18.1 subproject checkout.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2499>

v4l2: Reset transfer in gst_v4l2_object_acquire_format()

get_colorspace() checks input caps transfer when mapping V4L2_XFER_FUNC_709
back to V4L2_COLORSPACE_BT2020 and GST_VIDEO_TRANSFER_BT2020_12. After
receiving source change event, decoder will G_FMT and S_FMT again. So need
to reset transfer when acquiring format to avoid using the old transfer.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2475>

amc: Don't map input buffer with write mode

When copying data out of a GStreamer buffer, we don't
need to map it writable.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2492>

webrtc: Use new libnice API to get the candidate relay address

Corresponding libnice API added in:
https://gitlab.freedesktop.org/libnice/libnice/-/merge_requests/229 (0.1.19)
https://gitlab.freedesktop.org/libnice/libnice/-/merge_requests/232 (0.1.20)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1998>

webrtc: Ensure the NICE_CHECK_VERSION macro is available

This macro was introduced in libnice 0.1.19.1, so until we bump our libnice
dependency to 0.1.20 we have to vendor the macro.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1998>

webrtc: Refactor ICECandidateStats freeing logic to a dedicated function

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1998>

webrtcbin: Document IceCandidateStats and RTCIceCandidatePairStats

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1998>

webrtcstats: Update unit test for outbound rtp stats

"remote-id" is not guaranteed to present after commit 1deb034e3d873f577a38bc483e6256b0346ee874.
Thus, we should not fail the test if "remote-id" is not found.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1998>

webrtcstats: Improve selected candidate pair stats by adding ICE candidate info

The implementation follows w3.org specs:
* https://www.w3.org/TR/webrtc-stats/#icecandidate-dict*
* https://www.w3.org/TR/webrtc-stats/#candidatepair-dict*

Corresponding unit tests are also added.

Rebased and updated from
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1462

Fixes #1207

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1998>

va: H264enc: Add encoder for VAEntrypointEncSliceLP.

We name vah264lpenc to support H264's VAEntrypointEncSliceLP encoder.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2472>

va: encoder: Do not reset the frame count when reconfig().

We should not reset the input/output_frame_count when some configure
changes. For example, the if resolution changes, the current way just
resets the frame count and make the PTS of the output buffer restart
from the original PTS of the first frame. That causes a lot of QOS
event and drop all the new frames.
We should only reset them when encoder start().

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2489>

va: encoder: change reset_state() to a virtual function of base class.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2489>

playbin3: Configure combiner on pad-added if needed

When collection is updated, decodebin3 exposes pad first and then
streams-selected message is posted.
The condition can cause a situation where playbin3 links non-existing
combiner/playsink pads (since streams-selected is not posted yet) with
new decodebin output pad. This commit will re-check selected/active
streams condition on pad-added and reconfigure output if needed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2482>

cutter: Include running/stream-time in messages

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2490>

gstreamer-full-static: autopep on script

Pass autopep on generate_init_static_plugins.py

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1637>

gstreamer-full-static: Be more strict with plugin param

Check that the plugins are correctly separated by ";"
and do not accept "," or ":" inside.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1637>

vacompositor: check caps and info return values

Check return values for get caps and video info from caps.

This was flagged by static analysis.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2480>

soup: Fix plugin/element init

In case of per features registration such as the
customizable gstreamer-full library, each
element should check that the soup library can be loaded to
facilitate the element registration.

Initialize the debug category properly

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2349>

d3d11decoder: Don't print error log on negotiation failure

It may not be a critical error and even expected when shutting down
pipeline or flushing.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2483>

d3d11screencapture: Fix missing/outdated cursor shape

d3d11screencapture can miss a cursor shape to draw or draw an outdated cursor shape.
 - AcquireNextFrame only provides cursor shape when there is one update
 - current d3d11screencapture skips cursor shape when mouse is not drawn

So, if a gstreamer application uses d3d11screencapture with cursor initially not drawn
"show-cursor"=false and then switches this property to true, the cursor will not be
actually drawn until AcquireNextFrame provides a new cursor shape.
This commit makes d3d11screencapture always update the cursor shape information, even
if the mouse is not drawn. d3d11screencapture will always have the latest cursor shape
when requested to draw it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2485>

meson: use better zlib dependency fallback

zlib is required, and if it isn't found it is checked several ways and
then forced via subproject(). This code was added in commit
b93e37592a3ccc0eaece1c8fef2d362b1e5fe685, to account for systems where
zlib doesn't have pkg-config files installed.

But Meson already does dependency fallback, and also, since 0.54.0, does
the in-between checks for find_library('z') and has_header('zlib.h') via
the "system" type dependency. Simplify dependency lookup by marking it
as required, which also makes sure that the console log doesn't
confusingly list "not found".

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2484>

va: Avoid unused variable if logging is disabled.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2478>

v4l2videodec: Fix missing handling of resolution-change

The pool process function may poll and get the resolution-change event
whenever it is not possible to share our buffers. This typically happen
when downstream does not support GstVideoMeta.

Not handling this would cause the decoder thread to exit silently and the
pipeline to stall.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2457>

v4l2videodec: Downgrade to info resolution-change trace

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2457>

structure: Fix serializing with new format inside arrays/lists

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1554>

va: Keep include's code style

Headers are in alphabetical order.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2465>

vafilter: Fix logging of unsupported alpha blending.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2477>

webrtcbin: reuese the same fec/rtx/red payload types for the same media payload

WHen bundling, if multiple medias are used with the same media payload, then
each of the fec/rtx/red additions would add a distinct payload.  This could
very easily overflow the available payload space.

Instead, track the relationship between the media payload value and
the relevant fec/rtx/red payload values and reuse them whenever
necessary, even when bundling.

e.g.

...
a=group:BUNDLE video0 video1
m=video 9 UDP/SAVPF 96 97
a=mid:video0
a=rtpmap:96 VP8/90000
a=rtpmap:97 rtx/90000
a=fmtp:97 apt=96
...
m=video 9 UDP/SAVPF 96 97
a=mid:video1
a=rtpmap:96 VP8/90000
a=rtpmap:97 rtx/90000
a=fmtp:97 apt=96
...

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2474>

shout2: fix compiler warnings and bump req to libshout >= 2.4.2

Fix compiler warnings with latest libshout version (2.4.6).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2473>

shout2send: Adding send-title-info and user-agent options

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2420>

tests: examples: Fix typo in QSV encoder example

Fixing width adjustment

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2467>

qsv: Add AV1 encoder element

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2467>

qsvencoder: Move common property to baseclass

adapter-luid and device-path are common for all codecs

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2467>

va: baseenc: No need to check the frame pointer in handle_frame().

No need to check the NULL pointer of "frame" in error handling, it
is assured non-NULL by base class and we already use it everywhere
in this function.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2471>