streamsynchronizer: set running time offset on events

It's cleaner and more generic than overriding the qos events.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1210>

concat: fix qos event handling

We were shadowing the sinkpad variable resulting in:
- the QoS event to be send to all sink pads instead of the active one
- the pad to be leaked

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1208>

doc: update meson version in README.md

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1209>

meson: va, msdk: simplify dep.get_variable() use

With recent Meson versions we can just write dep.get_variable('foo')
instead of dep.get_variable(pkgconfig: 'driverdir', internal: 'driverdir').

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1183>

meson: fix use of deprecated meson api external_program.path()

Just using .full_path() instead.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1183>

meson: fix use of deprecated meson api meson.has_exe_wrapper()

Use meson.can_run_host_binaries() instead.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1183>

meson: update for meson.build_root() and .build_source() deprecation

-> use meson.project_build_root() or .global_build_root() instead.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1183>

meson: update for dep.get_pkgconfig_variable() deprecation

... in favour of dep.get_variable('foo', ..) which in some
cases allows for further cleanups in future since we can
extract variables from pkg-config dependencies as well as
internal dependencies using this mechanism.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1183>

meson: clean up conditional paths after version bump

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1183>

assrender: fix smooth scaling by disabling hinting

When ass hinting value is set to anything other than NONE,
subtitles cannot use smooth scaling, thus all animations will jitter.

The libass author warns about possibility of breaking some scripts when it is enabled,
so lets do what is recommended and disable it to get the smooth scaling working.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1201>

discoverer: Set number to stream infos

The idea is that we can reference to streams using this unique number,
within the context of that discoverer info. That number should always
be usable to reference the streams for a specific stream.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/897>

discoverer: Don't ref NULL taglist

Fixes warning introduced in 064f7bbbfac9610fd391c45091e35391b80e1212

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1200>

integration/ges: Ignore GstStream for validate tests

Requires the ges runner to be configured in such a way that the resulting
stream-id is consistent (and therefore can be checked)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1187>

stream: Set the object name to the stream id

Makes it more meaningful in debug logs (instead of streamNNNNN)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1187>

docs: remove mention of mms from docs and mmssrc from tutorials

Prerequisite for our removing it from the cerbero build, see
https://gitlab.freedesktop.org/gstreamer/cerbero/-/merge_requests/760

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1199>

rtphdrext-clientaudiolevel: Rename RFC 6464 element

Multiplying elements named after RFC numbers is confusing,
so let's give them meaningful names.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1125>

ci: gstreamer-full: reenable build

The gstreamer-full job should be run
during the integrate stage always.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1190>

subprojects: Update ogg and vorbis wraps

... to 1.3.5-2 and 1.3.7-2, respectively. Specifically to fix
ogg/vorbis plugin loading on Windows devenv environment.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1196>

Revert "meson: Link to objects instea of static helper library"

This reverts commit b19de413b94d228b1460b0899f9b41b2b5233943.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1194>

Revert "audio: Merge simd libs into the main one"

This reverts commit 4d3a200358439e6c76c5dd1be2daae0cceb0e44a.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1194>

Add initial meson devenv support

There is still a few things missing compared to gst-env.py, but it is
functional.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1162>

video-overlay-composition: Fix constructor guard to actually allow NULL as parameter

And don't use a NULL rectangle later.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1195>

gl/eagl: fix eagl display creation

The GstGLDisplayType of the display was win32 instead of the required eagl.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1188>

qtdemux: Add support for wvtt (WebVTT) subtitles.

WebVTT in ISO MP4 is specified in ISO 14496-30,
and needed for DASH support. It's stored in an
mp4 specific format. To handle it compatibly,
the wvtt boxes are converted back into WebVTT text
and pushed as application/x-subtitle-vtt

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1182>

isomp4: Split buffer process functions.

Split the different handling for closed captions, VobSub subpicture
and timed text samples into separate simplified process functions.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1182>

isomp4: Use a function pointer for buffer splitting.

Swap the `need_process` boolean check on qtdemux streams
for a direct function pointer to the splitting function,
so we can stop adding extra cases to the single growing
`gst_qtdemux_process_buffer()` function.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1182>

srt: Plug leak of headers

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1040>

tests/rtp/payload: add test for shrinking extension data

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1146>

rtp: also support shrinking the extension data

Currently the extension data length specified in the RTP header would
say it was shorter then the data serialised to a packet. When
combining the resulting buffer, the underlying memory would still
contain the extra (now 0-filled) padding data.

This would mean that parsing the resulting RTP packet would potentially
start with a number of 0-filled bytes which many RTP formats are not
expecting.

Such usage is found by e.g. RTP header extension when allocating the
maximum buffer (which may be larger than the written size) and shrinking
to the required size the data once all the rtp header extension data has
been written.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1146>

mpegtsmux: Avoid crash when best pad gets flushed

The 'best' pad might receive a flush event between us picking it and us
popping the buffer. In this case, the buffer will be missing.

Similar to https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/711

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1042>

vorbisdec: don't emit g_warning() on malformed input data

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

theoradec: don't emit g_warning() on malformed input stream

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

subparse: don't use g_warning() for malformed input

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

tools: Define G_LOG_DOMAIN for various tools as well

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

rtsp-server: define G_LOG_DOMAIN

Fixes #634

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

gst-plugins-bad: define G_LOG_DOMAIN for all libraries

Fixes #634

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

gst-plugins-base: define G_LOG_DOMAIN for all libraries

Fixes #634

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

gstreamer: define G_LOG_DOMAIN for all libraries

And get rid of weird way the define was done for core.

Fixes #634

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

libs: check: handle criticals and warnings for new gstreamer log domains

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1009>

aes: specify the required OpenSSL version

The code in the aes elements assumes OpenSSL >= 1.1.0:

  - implicit library initialization;
  - version retrieved with OpenSSL_version(OPENSSL_VERSION);

and it fails to build with older versions.

Specify the required OpenSSL version explicitly in meson.build so that
the elements are excluded on older systems (e.g. Ubuntu 16.04) and the
rest of GStreamer can still build.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1067>

ci: fix plugins cache diffs directory

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/867>

audio/video aggregator: make use of new aggregator inactive pad API

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/867>

aggregator: expose API for ignoring inactive pads

An inactive pad is a pad which, in live mode, hasn't yet received
a first buffer, but has been waited on at least once.

Exposing API to support this behaviour allows users of aggregator
subclasses to request pads, and not start pushing data on those
immediately, while avoiding systematic timeouts.

Subclasses must check in explicitly to this behavior, most likely
by exposing a user-facing property, and must check whether a pad
needs ignoring when aggregating. That is because by design,
aggregator subclasses don't get a list of "ready" pads, but instead
directly iterate element->sinkpads.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/867>

docs: tutorial 1: error out if an error occurred in Hello World tutorial

Very confusing if it just exits silently with exit code 0 on error.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1185>

discoverer: Advertise container-specific tags with a new API

Since commit a55dafe341ac7398e7c37c30d8b760228296da92, stream-scoped tags no
longer appeared as top-level tags, introducing a behaviour regression, specially
for MP3 files.

The `gst_discoverer_info_get_tags()` API now returns all tags detected for the
given media, as documented.

A new API is introduced to get container-specific tags,
`gst_discoverer_container_info_get_tags()`. The discoverer tool was adapted to
use it. `gst_discoverer_info_get_tags()` is now deprecated in favor of
`gst_discoverer_container_info_get_tags()` and
`gst_discoverer_stream_info_get_tags()`.

Fixes #759

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1107>

vadeinterlace: Accept ANY feature.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1024>

vadeinterlace: Fixate interlace-mode and framerate accordingly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1024>

vapostproc: Accept ANY feature.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1024>

vapostproc: Traverse caps features in gst_va_vpp_caps_remove_fields()

The previous code had a potential failure for multiple caps features. Now
each caps feature in each structure is reviewed, and if it has a supported
feature, the structure is processed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1024>

vapostproc: Refactor gst_va_vpp_complete_caps_features()

gst_va_vpp_complete_caps_features() now receives the @feature_name to
add and return if @caps doesn't provide it.

So, instead of two nested loops, now the function is a single loop,
traversing @caps to find if each structure already contains the requested
@features_name.

It's important to add missing caps features with @caps, in order to
not lost information.

The function caller does the external loop by calling per each
available caps feature.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1024>

vapostproc: Split caps transform in two phases.

In order to make more readable the caps transformation, the operation
was split in two phases:

1. Rangify the supported caps structures.
2. Add the missing (and supported) caps features.

Step 1 modified its logic, by copying any unrecognized structure.
It's a previous step required for allowing ANY caps feature as
passthrough.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1024>

tsdemux: Change many GST_{DEBUG, LOG, etc} into _OBJECT

Log files with several demuxers running at once can otherwise get
confusing

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1096>

tsdemux: Issue GST_ELEMENT_WARNING for continuity errors

The application might want to make use of these.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1096>

ci: install newer meson via pip in documentation job

Since updating the existing image seems difficult and efforts
to redo the setup are still work in progress.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1084>

meson: bump meson requirement to >= 0.59

For monorepo build and ugly/bad, for advanced feature
option API like get_option('xyz').required(..) which
we use in combination with the 'gpl' option.

For rest of modules for consistency (people will likely
use newer features based on the top-level requirement).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1084>

meson: add 'gpl' option and only build plugins with (A)GPL deps if explicitly enabled

Require explicit opt-in to build plugins with (A)GPL dependencies.

Keep ugly/bad options on 'auto' for now so cerbero doesn't fail.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1084>

basetsmux: Support for caps changes

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/981>

basetsmux: Clean up gst_base_ts_mux_create_stream

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/981>

mpegtsbase: Search SCTE-35 DRF_ID_CUEI in multiple registration descriptors

There are streams in the wild that have to add a SCTE-35 trigger in
another e.g. GA94 stream. Most encoders would replace the GA94
descriptor ID with the CUEI one temporarily, but there are some that
will add two registration ID descriptors, one with GA94 and one with
CUEI.

Failing to parse the CUEI registration ID in that case would return
FALSE in _stream_is_private_section , therefore setting it as known PES
and pushing packets downstream instead of calling handle_psi.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/979>

smartencoder: Force reencoding of vp9 for profiles can't support

If the input file is in a profile we won't be able to output (1 or 3 in BGR
format), simply reencode everything for now.

Once we add support for that case we can remove that code

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1062>

encoding-profile: ignore more fields when creating for discover info

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1062>

smartencoder: Always plug a vp9parse when encoding vp9

This way we know that all relevant fields about video format are
added and we avoid renegotiation issues.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1062>

qtmux: Allow more fields changes renegotiating h264

And consider interlace-mode=progress as equivalent to the field not
being specified.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1062>

matroskamux: Ignore some fields when renegotiating

Those values are never used in the muxer so we should not fail the
negotiation if those are changing.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1062>

smartencoder: Fix renegotiating when reencoding parts of the stream with vpx

In the encoded streams we might not have all the information about the
raw video stream, but when reencoding they end up being specified, even
if those are default values.

As vp8 decoders always output frames in some YUV color space we can
ensure that when upstream doesn't specify any value in its caps we
use the default one which is what we end up doing when decoding/reencoding
anyway, so this way downstream (matroskamux in that case) doesn't need
to be able to renegotiate (which it doesn't).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1062>

tsdemux: Improve gap detection

We should also take into account whether data is currently pending when checking
for gap on streams. It could very well be that some streams have very low
bitrate (and spread out) data. For those we don't want to push out a gap event.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1179>

tsdemux: Handle "negative" timestamps

This is only enabled in push time mode. Furthermore it's only enabled for now if
PCR is to be ignored.

The problem is dealing with streams where the initial PTS/DTS observation might
be greater than following ones (from other PID for example). Before this patch,
this would result in sending buffers without any timestamp which would cause a
wide variety of issues.

Instead, pad segment and buffer timestamps with an extra
value (packetizer->extra_shift, default to 2s), to ensure that we can get valid
timestamps on outgoing buffers (even if that means they are before the segment
start).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1179>

tsdemux: Handle streams with bogus PTS vs DTS

PTS and DTS should be within a reasonable distance of each other.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1179>

tsdemux: Handle PTS->TS at wraparound

This has been a FIXME for ages.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1179>

webrtcbin: fix prevention of webrtcbin deletion due to ref held by probe callback

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/810

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1150>

d3d11: d3d11{convert,scale}: Add add-borders property

Functionally identical to that of videoscale element.

When disabled, d3d11convert or d3d11scale element will scale
image without adding borders, meaning that display aspect ratio
will not be preserved.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1170>

vapostproc: Add add-borders property to keep dar

Just as videoscale, it enables add-borders property (FALSE by default)
in vapostproc to add border, if necessary, to keep the display aspect
ratio from the original image.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1169>

vapostproc: Fix early fixation.

First copy missing fields and then fixate all remaining fields.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1169>

ofa: remove ofa audio fingerprinting plugin

I think the MusicIP database for this has been defunct for years,
so I can't imagine this plugin is particularly useful or still
used by anyone.

See https://musicbrainz.org/doc/Fingerprinting#PUID

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1153>

meson: Define cpp_std in the top-level project()

Due to a bug, meson ignores ${lang}_std settings in default_options
for subprojects: https://github.com/mesonbuild/meson/issues/1889

This causes build failures when a subproject requires c++11 or c++14,
etc. Compilers that support those cpp_stds are very common, and all
the toolchains that we support include c++ compilers, so we can
add cpp_std=c++14 to the top-level.

This fixes the webrtc-audio-processing build on Linux, and harfbuzz on
macOS.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1133>

meson: wasapi2,mediafoundation: Work around Windows SDK header issue

Some SDK headers are not standard compliant, so MSVC will
complain when such headers are in use with "/permissive-" compile
option. Use "/Zc:twoPhase-" to work around the issue as documented in
https://docs.microsoft.com/en-us/cpp/build/reference/permissive-standards-conformance?view=msvc-160#windows-header-issues

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1174>

lame:meson: Avoid using fallback when we could use system install

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1176>

subprojects: update vorbis wrap to 1.3.7 and add fallback url

The Windows CI runners complain about self-signed certificates
with the download.xiph.org urls.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1175>

subprojects: update ogg wrap to 1.3.5 and add fallback url

The windows ci runners complain about a self-signed certificate
with the download.xiph.org urls.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1175>

validate:known_issues:rtsp: Mark error message on bus as known

See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/814

And reindent file.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1171>

meson: Mark newly fdkaac/ogg/vorbis as allow fallback

This way when the dep is `auto` we will fallback if the system
dependency is not available.

And use https to get libvorbis

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1171>

mediafoundation: Use GetProcAddress() for OS version dependent symbols

We are using some symbols which are not available on Windows 7,
specifically D3D11 interop related ones

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1167>

vapostproc: Transfer colorimetry at fixate if possible.

Taken from videoconvert element.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1110>

meson: Fix warning building GstGLEGL

We forgot to add the `GstGL` gir as a dependency which was properly
done for GstGLWayland and GstGLX11.

And document why we use a list for `all_libraries`

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1168>

meson: Support building lame as subproject

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1068>

meson: Add wrap for libvorbis and libogg

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1068>

meson: Add wrap for fdkaac

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1068>

python:meson: Do not build plugin when statically built

It is not supported yet

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

python: Add an option to disable tests

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

ci: Build introspection support on static builds

But disable python in GES as it is not supported on static builds

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

ges:docs: Ignore GESImageSource as it is plain useless now

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

meson: Add info about 'gstreamer-full'

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

meson: Streamline the way we detect when to build documentation

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

tests: Simple test to use gst-full in python

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

validate:build: Disable static building validate tracer

It introduce duplication of symbols and we need to rework the way we implement it

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

build: Expose ges symbols in gst-full

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

ges:build: Disable python modules when statically building

Introspection fails otherwise

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

Use new `libraries` subprojects variables to statically link then

And also build the girs against `gstreamer-full` when possible. Also
making `gst_init_static_plugins` available from the bindings.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

meson: List libraries and their corresponding gir definition

Introduces a `libraries` variable that contains all libraries in a
list with the following format:

``` meson
libraries = [
    [pkg_name, {
        'lib': library_object
        'gir': [ {full gir definition in a dict } ]
    ],
    ....
]
```

It therefore refactors the way we build the gir so that we can reuse the
same information to build them against 'gstreamer-full' in gst-build
when linking statically

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>

meson: Mark files as files()

Making it more robust and future proof

And fix issues that it creates

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1093>