nvdecoder: Handle DPB size margin in a single place

... instead of each subclass

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2343>

d3d11decoder: Handle DPB size margin in a single place

... instead of each subclass

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2343>

codecs: Signal required DPB size for AV1,MPEG2,VP8, and VP9 via new_sequence()

Make all codecs consistent so that subclass can know additional DPB
size requirement depending on render-delay configuration regardless
of codec. Note that render-delay feature is not implemented for AV1
yet but it's planned.

Also, consider new_sequence() is mandatory requirement, not optional

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2343>

audioconvert: If no channel-mask can be fixated then use a NONE channel layout

Otherwise this is generating caps without a channel-mask, which is
invalid for >1 channels and will always fail negotiation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2350>

doc: Update cache for NV12_4L4 and NV12_16LE32 gl support

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

opengl: Add NV12_4L4 conversion support

This format is produced notably by Hantro G1/G2 HW. Using a shader instead of
the Hantro embedded converter helps reduce drastrictly the memory usage at a
relatively small GPU overhead.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

opengl: Add NV12_16L32S conversion support

This adds a first detiling shader with initial support for
NV12_16L32S as produced by Mediatek decoders.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

glsl: Enable GLSL 1.30 if we have OpenGL 3.0/3.1

As implemented, we only support OpenGL 3 API from version 3.2. Though, there
is no issue enabling GLSL 1.30 even if we are going to restrict our API usage
to 2. This allows using texelFetch() on OpenGL 3.0 and 3.1 drivers.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

opengl: Add low level support for tiled formats

This adds support for tiled format in stride and plane size
code.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

v4l2codecs: Port to the new tile size helper

This will complete the scaling of width/height shift scaling
as only a partial implementation was made.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

video: Port video frame to the new tile size helper

This is now moved to the library, so it can be used in multiple
places.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

video: Add a helper to get the tile size information

Since the addition of tiling format with subsampled tile size
(NV12_16L32S), getting the tile width/height shifts and tile
size have become more complex. Add a helper to extract and
scale this information for the selected plane and format.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

eglimage: Add missing NV21/61 support

Caps would allow that, but selecting this format would lead to
an "no reached" assertion in the code.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2190>

cuda: Fix introspection warnings

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1183

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2344>

Revert "cuda: Fix GstCudaContext refcount bug"

This reverts commit df7ee0e21518ab5586e4094f2089048f3767d5f5.

We should not unref it since gst_message_new_have_context()
takes ownership of the GstContext.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2342>

filesink: fix handling of non-existing paths with musl

Fixes #1194

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2341>

tsdemux: Demote warning to simple debug

That issue is actually handled, so don't pollute the logs with such warning.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2340>

registry: skip Rust dep builddirs when searching for plugins recursively

These artefacts confuse the plugin scanner and may cause noisy warnings
(and slow down things).

Fixes https://gitlab.freedesktop.org/gstreamer/gst-build/-/issues/68

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2146>

interlace: Also handle a missing "interlace-mode" field as progressive

Otherwise caps negotiation will fail in situations that are supposed
to work, like:

  "video/x-raw,framerate=(fraction)60/1" ! interlace field-pattern=0 ! "video/x-raw,framerate=(fraction)30/1"

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2335>

interlace: Add some more debug output to the getcaps function

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2335>

cuda: Fix GstCudaContext refcount bug

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2334>

webrtc: Fix memory leak in icestream

Since both g_value_set_object() and g_weak_ref_get() takes a reference
there will be two new references to the GstWebRTCICE object when there
should be only one. g_value_take_object() has the same functionality as
g_value_set_object() but does not take a reference.

Without this change, the GstWebRTCICE object will be leaked.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2333>

cuda: Correct CUDA device id field in GstContext structure

device id is unsigned int, not signed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2311>

rtpjitterbuffer: Free CNAME/SSRC mappings on finalize and PAUSED->READY

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2336>

rtpmanager: Refactor RTCP packet loops to fix control flow

Mixing C loops with switch statements is a bad idea as break has a
different meaning in both. Breaking inside the switch statements wrongly
caused further loop iterations.

Instead use goto to get out of the loop and continue to do another loop
iteration, and never ever use break except for the end of a case.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2336>

rtpjitterbuffer: Initialize variables

Avoid use of uninitialized variable
Fixing MSVC warning
gstrtpjitterbuffer.c(4733) : warning C4700: uninitialized local variable 'have_sdes' used

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2315>

codecs: h265decoder: Fix documentation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2328>

mssdemux2: Don't expose/use streams we can't handle yet

Avoids issues further down

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2319>

mssdemux2: Ensure stream/track uniqueness

If there is more than one track of the same type (say audio), we would end up
creating several stream/types with the same name.

Instead use the MSS stream name property to make them unique

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2319>

mpegts: Handle "empty" PMT gracefully

Some streams have 2 PMT sections in a single TS packet. The first one is "valid"
but doesn't contain/define any streams. That causes an unrecoverable issue when
we try to activate the 2nd (valid) PMT.

Instead of doing that, pre-emptively refuse to process PMT without any streams
present within. We still do post that section on the bus to inform applications.

Fixes #1181

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2310>

pythonplugin: fails silently on plugin issue

If a gst python plugin fails to load, the meta plugin
should continue to try loading the following.
If no plugin can be loaded, the meta plugin should
not be blacklisted by returning false.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2253>

srtp: fix flaky unit test

Use different port for each test to avoid other UDP
packet to be received.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2294>

videodecoder: release stream lock after handling gap events

The stream lock is taken before handling gap events but was not released in all
possible runtime situations. This issue was introduced in:
https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/1274

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2307>

subparse: don't deref a potentially NULL variable

If the html SAMI data is malformed, then retrieving the attribute name
may fail.  We then cannot retrieve the attribute value.

Fixes: https://oss-fuzz.com/testcase-detail/4700130671984640
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2317>

d3d11h265dec: Assign PRIMARY + 1 rank

Promote d3d11h265dec to be default one if available

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2314>

nvvp9sldec: Increase DPB size to cover render delay

This should've included in the previous MR
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/987
already, but missed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2313>

parsebin: Expose streams of unknown type

This actually respects the existing `expose-all-streams` property by exposing
them and having them present in the stream collection (as streams of type
unknown).

Fixes #1179

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2309>

qroverlay: Reset data_changed after we use the info

It was never reset so it was always TRUE once the data was changed!

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2299>

qroverlay: Add a GstQROverlay meta

See documentation

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2299>

wavparse: Unset DISCONT buffer flag for divided into multiple buffers in push mode

In push mode (streaming), if the received chunk buffer size from _chain is bigger
than output buffer size, the flags of the divided-buffers are propagated to the
DISCONT flag from first received chunk buffer. This unexpected buffers contained DISCONT
flags are abnormally transformed when changing the sampling rate by audioresample element.
So unset unnecessary DISCONT flag before pad_push().

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2305>

playbin2: Remove dead code

blacklisted_mimes has been empty for ages. Remove the code "using" it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2306>

timeoverlay: add support for reference timestamp time mode

+ update date-time mode to actually use the timestamp that
  was selected with the time-mode property

Co-authored-by: Sebastian Dröge <sebastian@centricular.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2252>

rtpjitterbuffer: add the reference timestamp meta in more situations

Previously, we only added it when actually performing synchronization
based on the NTP time.

The information can be useful downstream in other situations too, and
we can compute a NTP time as soon as we get a sender report with the
relevant information.

Co-authored-by: Mathieu Duponchelle <mathieu@centricular.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2252>

rtpgstpay: Don't push packets before the first input buffer is received

It's not possible to create a valid RTP timestamp for them, which would
cause a potentially very big RTP timestamp discontinuity between those
first packets (created from initial events) and the packet based on the
first input buffer.

As a side-effect, also simplify the packet aggregation code a bit and
work with only a single level of buffer lists.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1157

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2250>

rtpbasepayload: always store input buffer meta before negotiation

The decision to store the input buffer depends on whether extensions
are to be added to the output buffer, I assume as an optimization.

This creates an issue for subclasses that call negotiate(), where
header_exts is actually populated, from their handle_buffer()
implementation: at chain time, no header extension has been negotiated
yet, which means that we don't add extensions to the first batch of
buffers that comes out.

Keep track of whether negotiate has been called (this is different
from the negotiated field) and always store the input buffer until
then. This fixes the issue while largely preserving the optimization.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2304>

tests/onvif: improve robustness

The previous iteration of the code was inferring the type of the
frame by looking at the overall size of the gst-payloaded packet.

It is more robust to actually parse the payload and look at the
actual data buffers it contains.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2303>

tests/onvif: don't push buffers outside segment

segment->stop is exclusive, so in reverse playback mode we do not
need to output a buffer at that position as it will simply get
clipped in basesink.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2303>

rtponviftimestamp: add extension data to all packets ..

regardless of whether they are input as individual buffers or
buffer lists.

The ONVIF specification requires all packets to hold the extension,
it makes no sense to behave differently when handling buffer lists.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2303>

cudaconvert: Enhance debugging when setting video info fails

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2300>

codecparsers: bitwriter: Calculate PicSizeInCtbsY when writing slice header.

 The slice->pps->PicWidthInCtbsY/PicHeightInCtbsY values are calculated when
 we parse the slice header. But they are not calculated in bitwriter and so
 may not have valid value when writing slice header.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2287>

codecparsers: bitwriter: Fix some coverity issues of H265 bitwriter.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2287>

videoscale: Fix the src video info error in transfer_colorimetry_from_input()

Pipeline such as:
gst-launch-1.0 -vf videotestsrc ! video/x-raw,format=NV12,colorimetry=\(string\)bt709 \
 ! videoscale ! video/x-raw,format=I420 ! fakesink
Always trigger a error:
ERROR             video-info video-info.c:556:gst_video_info_from_caps: no width property given

Because it is called before the fixate_size(), the src caps' resolution
may be absent or not fixed. That causes that the src video info can not
be created correctly and we can not inherit the colorimetry and chroma-site
from the input caps.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2289>

videorate: fix assertion when pushing last and only buffer without duration

Fixing this pipeline:
  gst-launch-1.0 filesrc location=sample.png ! pngdec ! videorate ! fakesink

- videorate receives a single buffer with pts = 0, duration = invalid;
- then it receives eos triggering this buffer to be pushed downstream;
- the pushing code was assuming that a duration was set, which is
  impossible as we received a single buffer and no output framerate was
  set either. So the best we can do is to push the buffer without
  duration.

Fix #1177

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2296>

va: dec: Use gst_buffer_pool_config_set_va_alignment() to set alignment.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2282>

va: pool: Replace all tabs with spaces in header file.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2282>

va: pool: Delete the GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT.

The va pool is used for GPU side surface/image, its alignment should
not be changed arbitrarily by others. So we decide not to expose the
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT flag anymore.
Instead, user can call gst_buffer_pool_config_set_va_alignment() to
set its surface/image alignment.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2282>

va: pool: Add set_va_alignment() API.

We want to use gst_buffer_pool_config_set_va_alignment() to replace
gst_buffer_pool_config_get_video_alignment(). The later one is specific
for GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT option.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2282>

rtptwcc: don't map the buffer twice

...and use the pt extracted rather than the one from RTPPacketInfo
when logging.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2271>

rtpsession: Emit "notify::stats" when we update stats from RR or SR

Sensibily optimizing caching the pspecs and using them directly

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2266>

oggdemux: Protect against invalid framerates

This check wasn't done for all mappings.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2295>

av1parse: Fix a latent memory leak in colorimetry setting.

Also delete the useless "have_cinfo" judgement.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2288>

av1parse: Correct the meaning of color_range flag.

According to spec:
color range equal to 0 shall be referred to as the studio swing
representation and color range equal to 1 shall be referred to as
the full swing representation.

The current status is just the opposite.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2288>

qsvencoder: Workaround for invalid DTS with VP9

SDK runtime seems to report zero DTS for all frames in case of VP9 but
we don't need to use DTS for the codec.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2291>

nvcodec: Stop building for non-{Windows,Linux} target

The other platforms, specifically macOS have not been supported already
because this plugin loads so or dll. Moreover, NVIDIA dropped
support for macOS as of CUDA 11.0. See also
https://developer.nvidia.com/nvidia-cuda-toolkit-11_0_0-developer-tools-mac-hosts

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2283>

srtp: add unit tests

Enable unit tests in meson.build
Add test_play_key_error to check the stats

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2027>

srtpdec: add counts in stats

In order to count the buffers which have been received and dropped for
decryption reason, add a stats to track it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2027>

d3d11videosink: Fix for unhandled mouse double click events

Only window created with CS_DBLCLKS style can receive those mouse
double click events, so we need to use the style for internal/external
windows can get double click events.

Also, passthrough mouse events to parent window in the same message pumping
threads instead of manually forwarding each mouse event.

Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1172
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2277>

rtpredenc: quieten warning about ignoring header extensions

Turn it into a FIXME, and only log once

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2279>

Meson: Fix deprecation warnings

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1876>

rvsg: fix cairo include

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2276>

Revert "videorate: Update the base time on segment updates"

This reverts commit 75b4809ebc23814009bebc70c775ab44d85decf2.

See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2186

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2254>

Revert "videorate: Add test for segment update"

This reverts commit a76f38b2c7ddbed546bb058c32ebcf8a553c003f.

See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2186

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2254>

Revert "videorate: Only "close" the segment if it is discontinous"

This reverts commit 6f7922b4dbba5ed780e7b0988669a81848a9e333.

See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2186

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2254>

Revert "videorate: Drop incoming buffers that are outside of the segment"

This reverts commit 24fd80344dbc059b72e13d813ca82f414a9d6cce.

See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2186

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2254>

Revert "videorate: Add unit test for closing a segment and opening a separate one"

This reverts commit 98f2a84a289ed4d4cfac9bc5c73182a56eefa99c.

See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2186

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2254>

rtprtxsend: mark RTX buffers with GST_RTP_BUFFER_FLAG_RETRANSMISSION

It is useful for elements downstream from rtxsend to know if the RTP
buffer they are dealing with is an RTX buffer or not.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2272>

cuda-converter: fix nvrtc compilation on non-English locale systems

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2268>

rtspclientsink: fix possible shutdown deadlock collect_streams()

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1696>

videoaggregator: keep old buffer when processing a MISSING_DATA gap

GAP events flagged with MISSING_DATA are transformed into GAP buffers
flagged with CORRUPTED.

In these cases, it is preferable to simply keep rendering the previous
buffer (if there was one) instead of flashing the pad in and out of
view.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/708>

compositor: fix prepare_frame obscuring check

A pad without a buffer or with a GAP buffer cannot obscure a
pad below it. Ignore those when considering whether a pad should
be drawn.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/708>

compositor: a pad without a frame can't obscure the background

Skip those when considering whether the background should be
drawn

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/708>

aggregator: forward gap event information to gap buffer

When the GAP event was flagged with MISSING_DATA, subclasses
may want to adopt a different behaviour, for example by repeating
the last buffer.

As we turn these gap events into gap buffers, we need to flag
those, we do so with a new custom meta.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/708>

Update proxy-libintl wrap to 0.4

It has fixes for Windows static build.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2262>

webrtcbin: Avoid access of freed memory

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2256>

mp4mux: fix spelling

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2241>

va: h264enc: Do not let L0 number surplus the HW limitation.

The algorithm to calculate the L0/L1 number may let the L0 number
surplus the HW limitation. We should ensure that limitation after
that calculation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2202>

videoscale: Add test to ensure that non-scaled metas are kept

Just make sure that we're not breaking non-scaled metas

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1630>

videoscale: Add test for transform_meta function

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1630>

videoscale: Don't copy scaled metas

Returning TRUE from the `transform_meta` function tells
GstBaseTransform to copy the meta into the new buffer. If videoscale
has already transformed a meta by scaling it, it should always return
FALSE to avoid duplicating the meta.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1630>

x11: Fix unused variable warnings

These are emitted when XInput 2 is not available.

```
../subprojects/gst-plugins-base/sys/ximage/ximagesink.c: In function ‘gst_x_image_sink_handle_xevents’:
../subprojects/gst-plugins-base/sys/ximage/ximagesink.c:696:29: warning: unused variable ‘state’ [-Wunused-variable]
  696 |   GstNavigationModifierType state = GST_NAVIGATION_MODIFIER_NONE;
      |                             ^~~~~
../subprojects/gst-plugins-base/sys/ximage/ximagesink.c:694:35: warning: unused variable ‘touch_frame_open’ [-Wunused-variable]
  694 |   gboolean pointer_moved = FALSE, touch_frame_open = FALSE;
      |                                   ^~~~~~~~~~~~~~~~
../subprojects/gst-plugins-base/sys/xvimage/xvimagesink.c: In function ‘gst_xv_image_sink_handle_xevents’:
../subprojects/gst-plugins-base/sys/xvimage/xvimagesink.c:427:35: warning: unused variable ‘touch_frame_open’ [-Wunused-variable]
  427 |   gboolean pointer_moved = FALSE, touch_frame_open = FALSE;
      |                                   ^~~~~~~~~~~~~~~~
../subprojects/gst-plugins-base/sys/xvimage/xvimagesink.c:426:29: warning: unused variable ‘state’ [-Wunused-variable]
  426 |   GstNavigationModifierType state = GST_NAVIGATION_MODIFIER_NONE;
      |                             ^~~~~
```

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2093>

mingw: Remove deprecated section in example cross file

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2080>

meson: Add PYTHONPATH to load GDB helper module

Meson generates a gdbinit file that will automatically load gstreamer
script. However that script uses a helper python module that needs
PYTHONPATH to be pointing into the right location in the source
tree to be able to find gst_gdb.py.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1796>

multiudpsink: allow binding to IPv6 address

When the sink is configured to create sockets with an explicit bind
address, then the created socket gets set to the udp_socket field
irregardless of whether the bind address indicated that the socket
family should be IPv4 or IPv6.  When binding to an IPv6 address, this
results in the following error:

gstmultiudpsink.c:1285:gst_multiudpsink_configure_client:<rtcpsink>
error: Invalid address family (got 10)

This patch adds a check of the address family being bound to and sets
the created socket to used_socket or used_socket_v6, accordingly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1551>

rtphdrextsdes: fixup test trying to g_free a local variable

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2235>

hls/m3u8: Fix starting segment for live playlist

RFC 8216 6.3.3 "Playing the Media Playlist File" : states that for live media
playlists "the client SHOULD NOT choose a segment that starts less than three
target durations from the end of the Playlist file"

This is an off-by-one error. Since we are looking for the "index" of the
segment, we need to subtract 1 from the searched position.

Ex: For a playlist with 12 entries, we want to start playback on the 9th segment
... which is at index 8.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2259>

test: Add test cases for the H265 bitwriter.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1831>

codecparsers: bitwriter: Add the common bit writer functions for H265.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1831>

va: vpp: Update the colorimetry and HDR fields when fixup src caps.

When we fixup src caps, the current way of handling the HDR fields is not
correct.
1. We trim the HDR fields only when the input caps is not a subset of the
fixup src caps. But in fact, the input caps with HDR fields such as the
"mastering-display-info" can possibly be the subset of the fixup src caps,
if they have all same other fields.
2. We always copy the colorimetry from input caps to src caps if it is
absent. But when hdr-tone-mapping is enabled, the HDR->SDR conversion makes
the colorimetry change. We should use downstream's setting, or just use the
default colorimetry of SDR.

We changes to:
1. If hdr-tone-mapping is enabled, we trim all HDR fields and add a correct
colorimetry.
2. Copy colorimetry from input if it is still absent.
3. Consider the subset replacement.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2244>

validate: Do not print Known error tests

Those are passing tests in practice and it doesn't give any useful information

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2264>

tests: convertscale: Do not log EOS events in validateflow

We already checked that we are getting an EOS before going back to ready
and adding the EOS at the end of the .validateflow is racy as the ERROR
message might reach the bus before it is logged.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2264>