meson: Bump all meson requirements to 0.60

Lots of new warnings ever since
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1934

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1977>

openexr: Fix some warnings

```
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:46:24: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
   46 |   virtual Int64 tellg ();
      |                        ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
   23 | typedef IMATH_NAMESPACE::Int64 Int64;
      |                                ^~~~~
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:47:32: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
   47 |   virtual void seekg (Int64 pos);
      |                                ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
   23 | typedef IMATH_NAMESPACE::Int64 Int64;
      |                                ^~~~~
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:67:26: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
   67 | Int64 MemIStream::tellg ()
      |                          ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
   23 | typedef IMATH_NAMESPACE::Int64 Int64;
      |                                ^~~~~
../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:73:29: warning: ‘Imf_3_1::Int64’ is deprecated: use uint64_t [-Wdeprecated-declarations]
   73 | MemIStream::seekg (Int64 pos)
      |                             ^
In file included from ../subprojects/gst-plugins-bad/ext/openexr/gstopenexrdec.cpp:32:
/usr/include/OpenEXR/ImfInt64.h:23:32: note: declared here
   23 | typedef IMATH_NAMESPACE::Int64 Int64;
      |                                ^~~~~
```

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1977>

subprojects/avtp: Update to latest avtp 0.2.0

Fixes some meson warnings too.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1977>

codecparsers: av1parser: Fix a typo in FilmGrainParams comment.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1974>

discoverer: chain up to parent finalize methods in all our types

Fixes a memory leak:

Direct leak of 32 byte(s) in 1 object(s) allocated from:
    #0 0x5ac5cd in malloc /src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:129:3
    #1 0x1007007 in g_malloc /work/glib-2.72.0/_builddir/../glib/gmem.c:125:13
    #2 0xf82e82 in g_data_set_internal /work/glib-2.72.0/_builddir/../glib/gdataset.c:464:8
    #3 0xf833f7 in g_datalist_id_set_data_full /work/glib-2.72.0/_builddir/../glib/gdataset.c:670:3
    #4 0xef81be in g_object_notify_queue_freeze /work/glib-2.72.0/_builddir/../gobject/gobject.c:295:7
    #5 0xef79c6 in g_object_unref /work/glib-2.72.0/_builddir/../gobject/gobject.c:3632:16
    #6 0x5e58bf in LLVMFuzzerTestOneInput /src/gstreamer/ci/fuzzing/gst-discoverer.c:132:5
    #7 0x4dd1a2 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
    #8 0x4dc98a in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool, bool*) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:514:3
    #9 0x4de6c4 in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:809:5
    #10 0x4dea29 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:857:3
    #11 0x4ce4a0 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:912:6
    #12 0x4f6f52 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
    #13 0x7f1c709980b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x240b2)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1984>

d3d11screencapturesrc: Allow capturing screen sub-area

Adds crop-x, crop-y, crop-width, crop-height properties specifying the
screen area to capture.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1932>

webrtcbin: Warn when offer didn't intersect with transceiver caps

We were silently falling back to creating a recvonly offer if the caps
didn't intersect.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc-sendrecv: Fix create-answer caps negotiation

We need to parse the payload type map provided by the offer SDP and
set those values on the payloader, otherwise webrtcbin will create
a recvonly answer SDP and we won't send anything to the browser.

Fixed it for both C and Python sendrecv examples.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc_sendrecv.py: Add picture-id-mode to rtpvp8pay

This doesn't just make TWCC stats perform better, it also fixes
stuttery video playback in Chrome.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc_sendrecv.py: Print an error on unknown JSON message

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc_sendrecv.py: Add missing copyright headers

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc_sendrecv.py: Implement all negotiation modes

Earlier, the example only supported one negotiation mode:
* Browser client is running, gstreamer starts a call and sends offer

Now these three modes are also supported:
* Browser client is running, gstreamer starts a call and sends an
  offer request
* gstreamer connects and waits for browser client to start a call and
  send an offer
* gstreamer connects and waits for browser client to start a call and
  send an offer request

The following features are still missing:
* Data channel support
* TWCC support + stats logging

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc_sendrecv.py: Make it executable

Why wasn't it already. Tired of typing 'python webrtc_sendrecv.py'.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc_sendrecv.py: Fix event loop usage for messages

Instead of creating a new loop, we should just be fetching the running
loop, then doing a blocking network call inside the callback, schedule
it on the event loop. This is what the C example does too.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

webrtc_sendrecv.py: Use default arg for server URL

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1864>

ci/fuzzing: update glib version to 2.72.0

Fixes an issue where on configure, glib's internal gnulib was tripping
up the undefined behaviour sanitizer with a divide by 0.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1976>

glvideomixerelement: send translated navigation events to the relevant sink pads

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1495>

compositor: send translated navigation events to the relevant sink pads

Fixes #888

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1495>

ci/fuzzling: fix oss-fuzz build

gst-plugins-base doesn't have a cairo option anymore.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1975>

validate: Cleanup ABI and make it ready to be stabilized this cycle

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Introspect gst-validate-runner.c

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Add getters for ValidateReports

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Change IssueId type to guint32

Which is a bit more bindings-friendly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: ssim: Respect requested dump recurrence parameter

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Keep scenario alive enough when executing actions

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Introspection annotation cleanups

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Fix padding and constants

Without this the Rust -sys validate crate tests don't pass.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Expose all public headers in main header

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

validate: Fix pkgconfig name

Making it consistent with the reset of GStreamer. This also means that
anyone wanting to target -validate >= 1.22 needs to change the way they
link against it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1810>

rtpjitterbuffer: Fix invalid memory access in rtp_jitter_buffer_pop()

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1973>

documentation: improve misleading wording

The documentation for several gst_*_writable_structure functions stated
that they would never return NULL, without making clear that the passed
object is required to be writable. This changes the wording in those
cases to make that requirement more clear.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1784>

ccconverter: drop data with a warning if scratch buffers overflow

Instead of asserting which could bring down the entire application.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1972>

v4l2videodec: set frame duration according to framerate

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1953>

uri: Build doubly-linked list by prepending items

As outlined in the API documentation, g_list_append() iterates over the whole
list, which can quickly introduce performance issues when the list becomes very
big, such as for data URIs for instance.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1909>

typefind: Skip parsing of data URIs

Commit a46ab2ced20d757e0e770d4de1edc3a152cc4f2f introduced a regression,
breaking typefinding for media content muxed in mp4 container and serialized to
data URIs. For this case it doesn't make sense to look for a file extension, so
skip URI parsing.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1909>

basesink: Fix annotations

We should annotate the Class and not the object itself.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1965>

gst-plugins-base: Fix several annotations

Add annotations for virtual methods when possible.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1965>

validate: Fix typo in get_reports

Return without s isn't taken into account for the introspection.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1965>

rtspsrc: proxy new "add-reference-timestamp-meta" property from rtpjitterbuffer

When syncing to an RFC7273 clock this will add the original
reconstructed reference clock timestamp to buffers in form
of a GstReferenceTimestampMeta.

This is useful when we want to process or analyse data based
on the original timestamps untainted by any local adjustments,
for example reconstruct AES67 audio streams with sample accuracy.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1964>

rtpbin: proxy new "add-reference-timestamp-meta" property from rtpjitterbuffer

When syncing to an RFC7273 clock this will add the original
reconstructed reference clock timestamp to buffers in form
of a GstReferenceTimestampMeta.

This is useful when we want to process or analyse data based
on the original timestamps untainted by any local adjustments,
for example reconstruct AES67 audio streams with sample accuracy.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1964>

rtpjitterbuffer: add "add-reference-timestamp-meta" property

When syncing to an RFC7273 clock this will add the original
reconstructed reference clock timestamp to buffers in form
of a GstReferenceTimestampMeta.

This is useful when we want to process or analyse data based
on the original timestamps untainted by any local adjustments,
for example reconstruct AES67 audio streams with sample accuracy.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1964>

wpe: Reintroduce persistent WebContext

A WebContext leak was introduced in MR
https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2252.
If we wanted one WebContext per WebView we should also unref the
WebKitWebContext when destroying the WebView.

This patch reintroduces the persistent WebContext, initially part of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1484.

Fixes #1084

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1933>

opusenc: change default bitrate-type from cbr to constrained-vbr

Which is the default in libopus itself as well, with a comment
that constrained-vbr is considered "safer for real-time use".

Unclear why CBR was the default in the first place.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1451>

webrtcbin: fix deadlock when setting up FEC encoder

We bind transceivers' fec_percentage property to the FEC encoder
percentage property, and with the binding bidirectional a deadlock
was introduced by the latest changes from !1762:

We take hold of the transceiver's object lock, then add the binding
and set the property to its initial value on the encoder, which causes
set_property to deadlock in the transceiver when the binding kicks in.

Changing the binding type to DEFAULT (source to target) is enough
to address the deadlock and still serves the original intent.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1967>

doc: handy-elements: fix audiotestsrc description

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1966>

webrtcbin: Check data channel transport for notifying 'ice-gathering-state'

Previously, it did not care about data channel's. It is fixed by adding
some conditions.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1957>

rtpbuffer: The out args for rtp extension data are optional

The code checks that these are != NULL before dereferencing them.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1962>

v4l2videodec: safely retrun from video_dec_loop with stream unlock

This is to avoid decoder hang when doing trick play between
different resolutions.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1960>

rtpjitterbuffer: Improve accuracy of RFC7273 clock time calculations

Previously the result of the calculations included inaccuracies caused
by the NTP clock estimation, which caused the timestamps to jitter
+/- 1/clockrate.

By reorganizing the calculations it is possible to get rid of this
inaccuracy and calculate deterministic and exact packet timestamps based
on the actual NTP clock as long as the estimation is not off by more
than 2**31 clockrate units.

The only remaining inaccuracy that is introduced now is caused by the
conversion from the NTP clock to the pipeline clock.

Also split up debug output, demote many messages to the trace debug
level and output more intermediate results.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1955>

twcc: Add some logging to debug TWCC feedback

This should allow people to debug when TWCC feedback is not enabled
because they haven't set the extmap in the caps.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1952>

twcc: Note that packet-loss-pct can count reordering as loss

This is difficult to encounter in ordinary networks, but is
encountered when using tc-netem to add random delays to packets, and
also when your UDP stream is bonded over multiple links with varying
characteristics.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1952>

nvcodec: Move CUDA <-> GL, D3D11, NVMM copy function to utils

This method can be used in other elements as well.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1945>

nvh265sldec: Add support for delayed output

Delay 4 frames in case of non-live to improve throughput

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1937>

h265decoder: Add support for delayed output

Functionally identical to the other decoder baseclasses.
Delayed output can improve throughput depending on decoding APIs.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1937>

h265decoder: Update documentation

Sync up with other baseclasses

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1937>

h265decoder: Drain decoder on new_sequence()

Holding previously decoded but not outputted pictures even after
new_sequence is not a safe approach in various aspect.
However, we cannot drain out DPB on new_sequence() unconditionally,
because there is a case where decoder should drop decoded pictures
if NoOutputOfPriorPicsFlag is set.

To detect NoOutputOfPriorPicsFlag before the new_sequence() call,
this patch splits decoding process into two path, one for nal unit parsing
in order to detect NoOutputOfPriorPicsFlag and then each nal unit
will be decoded.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1937>

h265decoder: Remove unused pts variable

We can know timestamp from associated GstVideoCodecFrame

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1937>

convertframe: Add support for GL-memory backend GstFrame input

Add "gldownload" early in the pipeline so that GL-memory backed raw
frames can be downloaded and processed on the CPU.

Closes: #1073
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1916>

rtprtxsend: don't require clock-rate in caps

For multiplexing, the rtpstreams you are multiplexing might not use
the same clock-rate.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1881>

rtprtxsend: don't start the task unless we are doing rtx

The rtxsend element can do pass-through when not enabled (no pt-map set)
and in those cases there is no point in starting an additional task
that does absolutely nothing.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1880>

Bump Meson requirement to >=0.60.0

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1934>

Meson: Set install_tag on some files

Meson tries to guess the tag (runtime, devel, etc) for every installed
file, but it cannot guess them all. There is a list at the end of
meson-log.txt of files we need to tag manually.

See https://mesonbuild.com/Installing.html#installation-tags.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1934>

rtprtxreceive: add ssrc-map property

Mirroring the rtxsend, this allows the application to "pre-map" the
retransmission-ssrcs to the "real" ssrc, if this information is known.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1878>

mpg123: Add gapless playback support

Co-authored-by: Sebastian Dröge <sebastian@centricular.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1028>

avaudenc: Add support for AV_PKT_DATA_SKIP_SAMPLES side data

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1028>

avauddec: Add clipping meta support for gapless playback

Co-authored-by: Sebastian Dröge <sebastian@centricular.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1028>

mpegaudioparse: Support gapless playback

Gapless playback is handled by adjusting buffer timestamps & durations
and by adding GstAudioClippingMeta.

Support for "Frankenstein" streams (= poorly stitched together streams)
is also added, so that gapless playback support doesn't prevent those
from being properly played.

Co-authored-by: Sebastian Dröge <sebastian@centricular.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1028>

deinterlace: scalerbob: Reduce latency to 0

We only need the current field, just like `linear`.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1926>

yadif: Fix CHECK macro for YUY2 format

Used to make comb artifacts for videotestsrc pattern=ball for YUY2
format only (not AYUV).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1938>

nvenc: Fix deadlock because of too strict buffer pool size

The pool size might need to be larger than encoding surface pool size.
Also, because we always copy input frame into internal CUDA memory,
there's no reason to restrict max size of buffer pool.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1939>

va: Fix a regression because of "Invert video codec frame dependency".

1. Always set the according GstVaH264EncFrame pointer when GstVideoCodecFrame
   pointer is assigned, which can make the logic safe.
2. Fix the forgotten change in _sort_by_frame_num. Its input pointer now is
   GstVideoCodecFrame type.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1935>

codecs: Rename picture clear functions

Our convention for clear method is gst_clear_foo_bar().

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1897>

windows: increase the timeout to create the windows docker image

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1912>

ci: force a new windows image to update cerbero's bootstrap

See:https://gitlab.freedesktop.org/gstreamer/cerbero/-/merge_requests/743#note_1270646

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1912>

nvh265sldec: Always fill SPS/PPS related parameters

Address compare was not a valid approach since it works
only if SPS/PPS id are changed. Otherwise it will always point to
the same address of member variables of h265parser.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1931>

doc: New cropping parameters added to v4l2src

v4l2src add several new parameters to control cropping of
the captured video stream.  Update the doc cache to reflect
this.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1089>

examples: v4l2: Add v4l2src crop example

Add a simple utility to illustrate how to set input cropping on v4l2src.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1089>

v4l2src: Add support for cropping at capture source input

Add properties to control input cropping in the V4L2 device.
The input cropping is applied before composing the result to the
capture buffer.  By default the capture size will be set to the same
size as the crop region, but it can be scaled to a different output
frame size if supported by the V4L2 device.
If scaling is not supported, the cropped image will
be composed as is into the top-left corner of the capture buffer.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1089>

v4l2object: Add function to get crop regions from device

Get the current crop bounding region from the V4L2 device so
that it can be provided to applications and used to validate
crop settings. Also make the default crop region available so
that it can be used to reset the crop when appropriate.

Uses the selection API when available with fallback to the crop
API for older kernels.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1089>

v4l2object: rename crop function to reflect its usage

The gst_v4l2_object_set_crop() is used for removing buffer
alignment padding. Give it a name that better reflects
that usage.  This helps to distinguish from cropping of the
input image (e.g. cropping at the image sensor on a captre
device), which can be  unrelated to the memory buffer padding,
especially if scaling is involved.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1089>

playbin3: Remove stale code

Remove now-unused get_stream_type_for_event() function.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1900>

decodebin3: Reset parsebin when new caps arrive

Check if parsebin can handle the new caps, and if not reset it so that it can
reconfigure itself for the new stream format.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1900>

decodebin3: Convert checks to assertions

"decodebin.input" is never resetted and should always be present, therefore make
it an assertion check

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1900>

parsebin: Implement ACCEPT_CAPS handling

The default query handler would go through typefind, which by default accepts
any CAPS. But once configured, parsebin can't reconfigure itself, it should
therefore pass through the ACCEPT_CAPS query to the first element after
typefind (if any).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1900>

playbin3: Hold playbin lock on pad-added

Take the playbin lock when accessing the combiner
to add a new pad to link to. Fixes races against
streams-selected messages triggering reconfiguration.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1900>

playbin3: Reconfigure on streams-selected message.

Don't reconfigure outputs when the select-streams
event is sent from the app, as the selection may
not take effect for some time. Instead, wait
for the pipeline to confirm the new set of
selected streams when it sends the message.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1900>

playsink: Fix reconfiguration after removing text_sink

If we previously had subtitles coming in, the video
may be chained through a text overlay block. Before,
the code would end up trying to link pads that were
already linked and video would not get reconnected
properly.

To fix that, make sure that the candidate
pads are actually unlinked first. If a textoverlay
is present and no longer needed, it will be cleaned
up later in the reconfiguration sequence.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1900>

playsink: Complete reconfiguration on pad release.

Requesting a new pad can start a reconfiguration cycle, where
playsink will block all input pads and wait for data on them
before doing internal reconfiguration. If a pad is released,
that reconfiguration might never trigger because it's now waiting
for a pad that doesn't exist any more.

In that case, complete the reconfiguration on pad release.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1180>

h264decoder: Fix invalid memory access

gst_h264_dpb_needs_bump() can be called with null picture
in case of live

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1928>

rtponviftimestamp: add support for using reference timestamps

Make it posible to configure the element to obtain the timestamps from
reference timestamp meta data instead of using the ntp-offset property,
or estimating its own offset. Currently the only time format supported
is "timestamp/x-unix", i.e. UTC time expressed in the unix time epoch.

In addition the custom event GstNtpOffset has been renamed to
GstOnvifTimestamp, to reflect that it is not necessarily used to convey
the ntp-offset. As a consequence we had to modify a couple of files in
the rtsp-server as well.

Fixes #984

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1683>

pbutils: Add function to parse RFC 6381 codecs field

This is the opposite of `gst_codec_utils_caps_get_mime_codec()`, which allows
elements to get the `GstCaps`

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1894>

sdpdemux: add media attributes to caps to fix ptp clock handling

Those are needed by rtpjitterbuffer to do the right thing, e.g.

a=ts-refclk:ptp=IEEE1588-2008:00-**-**-**-**-**-**-**:0
a=mediaclk:direct=1266592257

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1924>

rtpvp8depay: Fix crash when making 'GstRTPPacketLost' custom event

This patch fixes a seg.fault in gst_structure_new() with warnings as below.

GLib-GObject-WARNING **:
 ../gobject/gtype.c:4330: type id '0' is invalid
GLib-GObject-WARNING **:
 can't peek value table for type '<invalid>' which is not currently referenced

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1918>

cudamemorycopy: add D3D11 resource support

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1807>

cudacontext: find associated DXGI Adapter LUID

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1807>

cudautils: add support of D3D11 resource as Cuda graphics resource type

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1807>

cudaloader: add D3D11 API

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1807>

mpegts: Handle glib < 2.58

By using a workaround to the lack of g_ptr_array_steal_index.

Fixes #1078

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1917>

webrtcbin: fix ulpfecenc passthrough pt

ulpfecenc uses a value of pt=255 for passthrough.

Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1075
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1914>

nvh264dec,nvh265dec: Fix broken key-unit trick and reverse playback

On GstVideoDecoder::{drain,flush}, we send null packet with
CUVID_PKT_ENDOFSTREAM flag to drain out decoder. Which will
reset CUVID parser as well.
To continue decoding after the drain, the next input buffer
should include sequence headers otherwise CUVID parser will
not report any decodeable frame.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1911>