meson: update glib minimum version to 2.56

In order to support the symbol g_enum_to_string in various
project using GStreamer ( gst-validate etc.), the glib minimum
version should be 2.56.0.

Remove compat code as glib requirement
is now > 2.56

Version used by Ubuntu 18.04 LTS

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/199>

gstvalue: don't write to const char *

Our various deserializing functions require NULL terminators
to not over consume substrings (eg fields of an array). Instead
of writing a NULL terminator to the passed-in string, which may
result in segfaults, make a copy of the substring we're interested
in.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/446

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/672>

Meson: Use pkg-config generator

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4>

meson: Disallow DbgHelp for UWP build

Most symbols in DbgHelp.h are not allowed for UWP

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/665>

Remove unused valgrind detection

Having this just to log a debug message in case we're
running inside valgrind doesn't seem very useful, and
the code that used to use this no longer exists it seems.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/595>

info: Fix build on Windows ARM64 device

gstinfo.c(3086): error C2094: label 'done' was undefined

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/662>

build: use cpu_family for arch checks

e.g. on 32-bit arm, we may have armv6, armv7l, armv7hf, etc which all
generally have the same layouts.  cpu_family() groups all of these into
just 'arm' that the ABI check table is expecting.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/664>

basetransform: Fix in/outbuf confusion of _default_transform_meta

The default implementation doesn't actually use its buffer parameters,
but this error might have been the cause of some actual confusion in
the plugins code.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/663>

gst_init: Call gst_init_static_plugins() when available

When doing a static build, gstreamer-full-1.0 defines that symbol to
register static plugins. Cerbero's Android build will be updated to
implement that symbol too.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/641>

gstvalue: expose gst_value_deserialize_with_pspec()

Typing hints can only be passed to gst_value_deserialize()
through the type of the passed-in value. This means deserialization
can only target the desired type for the top-level elements,
making it for example impossible to deserialize an array of
flags to the expected type.

This commit exposes a new function, gst_value_deserialize_full(),
that takes an optional pspec as the extra parameter, and updates
the deserialization code to pass around that pspec, or the
element_spec when recursively parsing the elements of a list-type
value.

This allows for example passing arrays of flags through the
command line or gst_util_set_object_arg, eg:

foo="<bar,bar+baz>"

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/629>

info: Load DbgHelp.dll using g_module_open()

... and update meson file so that enable it only using required headers.

"dependency(...)" is unlikely successful for Windows SDK libraries
since it doesn't ship pkg-config file. So it needs to be changed
to "find_library()" to link corresponding .lib file. That would
result to most MSVC build system will link dbghelp.dll. However,
one drawback of the change is that gstreamer-1.0.dll will mandate
dbghelp.dll although it should be optional. So g_module_open() way
can be the most safe way in this case.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/626>

padtemplate: mark documentation caps as may be leaked

The template itself is already marked as such and the caps, the
documentation caps are a logical extension of those two.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/650>

padtemplate: add missing annotation

Adds missing "transfer full" annotation for caps parameter in
gst_pad_template_set_documentation_caps()

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/648>

memory: fix documentation to display in html

Commit e9c99c05 added a deprecation message, but this message is not
displayed in the html page since the format was not correct.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/648>

meta: expose API to register and create custom meta

Custom meta is backed by a GstStructure, and does not require
that users of the API expose their GstMeta implementation as
public API for other components to make use of it.

In addition, it provides a simpler interface by ignoring the
impl vs. api distinction that the regular API exposes.

This new API is meant to be the meta counterpart to custom events
and messages, and to be more convenient than the lower-level API
when the absolute best performance isn't a requirement.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/609>

memory: Deprecate GST_MEMORY_FLAG_NO_SHARE

This flag always causes problems as it prevents subbuffering,
instead one should create a custom GstAllocator to pool the GstMemory objects
and not rely on the lifetime of the GstBuffer object they were originally
attached to.

https://bugzilla.gnome.org/show_bug.cgi?id=757254

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/614>

gstmeta: intern registered impl string

Subsequent lookups in the hashtable are probably better done
on memory we're confident is allocated to us :)

It was easy to trigger invalid reads by calling gst_meta_register
with dynamically allocated memory, freeing that memory, then
calling gst_meta_get_info()

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/628>

deviceprovider: Returns non-floating devices from gst_device_provider_probe

This should make the API usage more consistent. Also document that the subclasses
should just return the devices as floating.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/558>

aggregator: don't fail all sink pads when a caps event fails negotiation

If one pad returns not-negotiated from a caps event, then all other sink
pads were returning not-negotiated.

In our case, we can't reliably easily fail at all so just remove that
code.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/623>

baseparse: prefer upstream caps rather than overriding

e.g. h264parse ! video/x-h264,stream-format=avc receives the following:
- caps: video/x-raw,stream-format=byte-stream
- gap event: baseparse tries to choose some default caps but would
  override the downstream chosen caps field with upstreams value.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/581>

aggregator: Hold SRC_LOCK while unblocking via SRC_BROADCAST()

Otherwise the clock id we access might not be a valid pointer anymore.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/630>

tests: leaks: Allow null tracer string if there's no available stack trace

In case that no available stack tracer, leak tracer will set
null string value for `trace` field. I would likely happen
on Windows.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/625>

tests: element: Don't run too many loop

g_thread_yield() doesn't ensure thread switching actually.
It would result to adding so many pads. Depending on system,
timeout might happen then.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/625>

tests: seek: Don't use too strict timeout for validation

Expected segment-done message might not be seen within expected
time if system is not powerful enough.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/625>

valve: Fix MSVC compile warning

gstvalve.c(285) : warning C4715: 'gst_valve_event_needs_dropping':
not all control paths return a value

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/624>

event: Add optional flags to the GAP event

This allows to signal the reason for the gap, for example missing data
like packet loss.

Based on a patch by Mikhail Fludkov <misha@pexip.com>

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/551>

harness: Add gst_harness_set_live()

By default each harness returns is_live=TRUE in latency queries. This is
often not desired and can now be overridden.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/599>

aggregator: Reset latency values in start()

Some base classes like videoaggregator try retrieving the latency during
construction, which causes the latency values to be set already until
reconfiguration happens.

By resetting them the same way as in stop() we ensure that we always
start cleanly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/599>

ptp_helper_post_install.sh: deal with none

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/620>

skip elements/leak.c if tracer is not available

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/621>

aggregator: Wake up source pad in PAUSED<->PLAYING transitions

When going to PLAYING we will now have a clock and can stop waiting on
the condition variable and instead start waiting on the clock if
necessary for the current configuration.

In the other direction when going to PAUSED the clock might have
disappeared and we might need to wait on the condition variable again
instead.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/601>

input-selector: Wake up blocking pads when releasing them

Otherwise deactivating them will cause a deadlock as they're blocking
inside the streaming thread.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/601

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/606>

valve: Add modes to forward sticky events when dropping and to convert buffers into gap events

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/587
Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/84

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/594>

aggregator: make peek() has() pop() drop() buffer API threadsafe

Enforce that the last buffer that was peeked (or had its existence
checked) on a pad is the one that gets popped / dropped, resetting
at the end of each aggregation cycle.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/603

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/608>

ptp: Also handle gnu/kfreebsd

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/619>

ci: include template from gst-ci master branch again

Back to development

Release 1.18.0

meson: dist pot file in tarballs

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/618>

aggregator: Document that samples_selected() must only be called from the aggregate() function

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/607>

aggregator: Don't automatically adjust segment if subclass provided one

On the first buffer the base class would update the segment position
based on the start-time-selection. If the subclass provides its own
segment this will caused unexpected behaviour and override segment
information that was explicitly set by the subclass.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/600>

Release 1.17.90

aggregator: fix documentation for samples-selected and buffer-consumed

GI expects the instance parameter to be documented, omitting it
leads to a msismatched output in the gir.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/592>

aggregator: Add optional GstStructure info parameter to "samples-selected" signal

Subclasses can use this to provide more information, for example
audioaggregator could provide the offset into the output buffer where
the next data is going to be filled.

See https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/805

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/590>

aggregator: add segment, pts, dts and duration to samples-selected

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/588>

Meson: Override gst-tester-1.0 program to find it in other modules

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/586>

fix clang 10 warnings

the typesystem checks in g_atomic_pointer_compare_and_exchange
seem to trigger some false positives with clang 10

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/584>

aggregator: fix iteration direction in skip_buffers

Subclasses use the pad segment to determine whether a buffer
should be skipped, we thus don't want to check if a buffer
needs to be skipped before processing the segment it's part
of.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/585>

gsturi: Add new API for storing unmodified userinfo / fragment

New API: gst_uri_from_string_escaped()

Identical to gst_uri_from_string() except that the userinfo and
fragment components of the URI will not be unescaped while parsing.

This is needed for correctly parsing usernames or passwords with `:`
in them such as reported at:
https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/831

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/583>

tests: Add more tests for gsturi

Add tests that exercise unescaping of userinfo and fragments.

Also convert to a modular macro-based definition so that we can reuse
the list of tests in the next commit.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/583>

inspect: Print preset description when available

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/582>

aggregator: expose sample selection API

See https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/771
for context.

This exposes new API that subclasses must call from their
aggregate() implementation to signal that they have selected
the next samples they will aggregate: gst_aggregator_selected_samples()

GstAggregator will emit a new signal there, `samples-selected`,
handlers can then look up samples per pad with the newly-added
gst_aggregator_peek_next_sample.

In addition, a new FIXME is logged when subclasses haven't actually
called `selected_samples` from their aggregate() implementation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/549>

gsturi: unescape '=' in http query

Don't use percent-encoding for '=' in http queries.
'=' in the following kind of http query should be maintained.
example:
?token=exp=123~acl=/QualityLevels(*~hmac=0cb ...

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/580>

basetransform: handle invalid subclass implementation for fixate_caps

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/575>

baseparse: Don't push pointless new segment events

In 1.0, there is no concept of segment update, so don't push new
identical segments.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/578>

baseparse: Fix seqnum handling in pull mode

After a seek in pull mode, we should use the seek seqnum for all
following operations, not some random seqnums

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/577>

check: suppress g-ir-scanner warnings

Make g-ir-scanner skip all those check macros that are
not useful for or usable from bindings.

gstcheck.h:209: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_message_error'
gstcheck.h:212: Warning: GstCheck: Unknown namespace for symbol 'assert_message_error'
gstcheck.h:251: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_int'
gstcheck.h:267: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_int'
gstcheck.h:280: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_int_hex'
gstcheck.h:299: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_int_hex'
gstcheck.h:310: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_int64'
gstcheck.h:327: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_int64'
gstcheck.h:340: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_int64_hex'
gstcheck.h:358: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_int64_hex'
gstcheck.h:369: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_uint64'
gstcheck.h:386: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_uint64'
gstcheck.h:399: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_uint64_hex'
gstcheck.h:417: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_uint64_hex'
gstcheck.h:428: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_string'
gstcheck.h:444: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_string'
gstcheck.h:455: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_float'
gstcheck.h:474: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_float'
gstcheck.h:487: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_pointer'
gstcheck.h:506: Warning: GstCheck: Unknown namespace for symbol 'assert_equals_pointer'
gstcheck.h:517: Warning: GstCheck: Unknown namespace for symbol 'fail_unless_equals_clocktime'
gstcheck.h:534: Warning: GstCheck: Unknown namespace for symbol 'MAIN_START_THREADS'
gstcheck.h:547: Warning: GstCheck: Unknown namespace for symbol 'MAIN_START_THREAD_FUNCTIONS'
gstcheck.h:555: Warning: GstCheck: Unknown namespace for symbol 'MAIN_START_THREAD_FUNCTION'
gstcheck.h:626: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_CRITICAL'
gstcheck.h:628: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_CRITICAL'
gstcheck.h:640: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_WARNING'
gstcheck.h:652: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_OBJECT_REFCOUNT'
gstcheck.h:661: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_OBJECT_REFCOUNT_BETWEEN'
gstcheck.h:676: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_CAPS_REFCOUNT'
gstcheck.h:679: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_BUFFER_REFCOUNT'
gstcheck.h:682: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_MINI_OBJECT_REFCOUNT'
gstcheck.h:690: Warning: GstCheck: Unknown namespace for symbol 'ASSERT_SET_STATE'
gstcheck.h:729: Warning: GstCheck: Unknown namespace for symbol 'tcase_skip_broken_test'
gstcheck.h:740: Warning: GstCheck: Unknown namespace for symbol 'tcase_skip_broken_loop_test'

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/579>

utils: silence g-ir-scanner warnings about float conversion macros

663: Warning: Gst: symbol='GFLOAT_TO_LE': Unknown namespace for symbol 'GFLOAT_TO_LE'
664: Warning: Gst: symbol='GFLOAT_TO_BE': Unknown namespace for symbol 'GFLOAT_TO_BE'
665: Warning: Gst: symbol='GDOUBLE_TO_LE': Unknown namespace for symbol 'GDOUBLE_TO_LE'
666: Warning: Gst: symbol='GDOUBLE_TO_BE': Unknown namespace for symbol 'GDOUBLE_TO_BE'
669: Warning: Gst: symbol='GFLOAT_TO_LE': Unknown namespace for symbol 'GFLOAT_TO_LE'
670: Warning: Gst: symbol='GFLOAT_TO_BE': Unknown namespace for symbol 'GFLOAT_TO_BE'
671: Warning: Gst: symbol='GDOUBLE_TO_LE': Unknown namespace for symbol 'GDOUBLE_TO_LE'
672: Warning: Gst: symbol='GDOUBLE_TO_BE': Unknown namespace for symbol 'GDOUBLE_TO_BE'
678: Warning: Gst: symbol='GFLOAT_FROM_LE': Unknown namespace for symbol 'GFLOAT_FROM_LE'
679: Warning: Gst: symbol='GFLOAT_FROM_BE': Unknown namespace for symbol 'GFLOAT_FROM_BE'
680: Warning: Gst: symbol='GDOUBLE_FROM_LE': Unknown namespace for symbol 'GDOUBLE_FROM_LE'
681: Warning: Gst: symbol='GDOUBLE_FROM_BE': Unknown namespace for symbol 'GDOUBLE_FROM_BE'

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/579>

math-compat.h: silence g-ir-scanner warnings

Easier to just make g-ir-scanner skip this header via #ifndef __GI_SCANNER__
than maintain different sets of headers in the meson.build file.

Warning: Gst: symbol="rint": Unknown namespace for symbol "rint"
Warning: Gst: symbol="rintf": Unknown namespace for symbol "rintf"
Warning: Gst: symbol="isnan": Unknown namespace for symbol "isnan"
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/579>

event, query: fix g-ir-scanner warnings

gstevent.h:72: Warning: Gst: symbol='FLAG': Unknown namespace for symbol 'FLAG'
gstquery.h:76: Warning: Gst: symbol='FLAG': Unknown namespace for symbol 'FLAG'

Use _FLAG(xyz) instead of FLAG(xyz) to silence g-ir-scanner
warnings about this internal helper define.

It's also slightly more hygienic.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/579>

tracer: declare GstTracer API stable

It's been around for more than 4 years and people have built
lots of stuff on top of it, doesn't really make sense to keep
it marked as unstable. We're unlikely to change it now, and
we can always deprecate it and make a new one if needed.

This stabilises the following API:
- gst_tracer_register()
- gst_tracing_get_active_tracers()
- gst_tracing_register_hook()
- gst_tracer_record_new()
- gst_tracer_record_log()

Might also help a bit with #424

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/576>

harness: unref sink/src caps after deactivating pads

Otherwise, access to the harness' sink/src caps is racy between any caps
query performed by an element and gst_harness_teardown().

Fixes: https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/794
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/574>

check: Always mark _ck_assert_failed as noreturn

So that we can use `fail` like `g_assert_not_reached`.

The comment is apparently wrong or outdated, as GCC considers it legal
for noreturn-marked functions to return using longjmp.

See the thread at
https://gitlab.freedesktop.org/gstreamer/gst-plugins-ugly/-/merge_requests/59#note_576422

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/573>

buffer: improve seqnum fallback warning message

Print target CPU we're building for.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/565>

buffer: fix meta sequence number fallback on rpi

The global seqnum variable wasn't actually increased in
the fallback code path, leading to all buffers getting
a seqnum of 0. Which also made the unit test fail.

This affects platforms/toolchains that don't have
64-bit atomic ops such as when compiling for armv7 rpi.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/565>

meson: add a plugin summary

This summary displays a list of plugins which
have been enabled.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/560>

gst-inspect: fix memory leak

With meson configure option: -Db_sanitize=address, the following
issue is seen while running the test "tools_gstinspect":

Running suite(s): gst-inspect

=================================================================
==20880==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 51 byte(s) in 9 object(s) allocated from:
    #0 0x7ffb4dbb0b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
    #1 0x7ffb4cdf1ab8 in g_malloc (/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x51ab8)

SUMMARY: AddressSanitizer: 51 byte(s) leaked in 9 allocation(s).
0%: Checks: 1, Failures: 0, Errors: 1

GOptionEntry man page states that: "Please note that parsed arguments need to be freed separately (see GOptionEntry)."
Thus, free the 'min_version' string that has been allocated but never freed.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/572>

gst/bufferpool: only resize in reset when maxsize is larger

Only resize the buffer if the maxsize is larger then the configued pool
size.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/570>

build/coretracers: add dep on threads

Fixes the following build error and missing '-pthread' argument when
linking:

subprojects/gstreamer/plugins/tracers/libgstcoretracers.so.p/gstleaks.c.o: In function `gst_leaks_tracer_setup_signals':
/work/build32/../subprojects/gstreamer/plugins/tracers/gstleaks.c:919: undefined reference to `pthread_atfork'

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/571>

directcontrolbinding: Properly initialize default `last_value`

It was zero and in some condition it means that the control binding
values where ignored (as shown in the test). Setting it to MAXDOUBLE
so that the first time we sync the values from a a timestamp in the
right range the proper value is computed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/564>

info: Fix possible broken debug output on Windows

Depending on Windows codepage setting, some characters could
be broken when printing on terminal. Fortunatly g_print* family will
take care Windows codepage.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/566>

pad: More explicitly explain how to post errors on GST_FLOW_ERROR

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/568>

latency tracer: Fix leaks in the reported latency trace

The stack item was not freed as it was supposed, causing leaks.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/269>

latency tracer: Fix unsafe and NULL pointer accesses

Use thread-safe accesses to pad peers and parent objects. This
fixes some crashers and all the non-safe access patterns I could
spot. There's still some weirdness when using the latency
tracer on pipeline chains that aren't yet linked, but this
at least stops it segfaulting.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/269>

Revert "gstinfo: Check threshold for category from macro"

This reverts commit dcece2a878b88335fd1990dbeeb88bdeacba0f06.

This increased the code size and number of branches for all debug statements.

Fixes #564

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/563>

aggregator: expose gst_aggregator_finish_buffer_list API

See https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/1276

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/562>

tests/elements/leaks.c: check get_tracer_by_name return value

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/557>

basesrc: Deprecate gst_base_src_new_seamless_segment()

It can be replaced by gst_base_src_new_segment()

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/490>

basesrc: Add new API for handling GstSegment update by subclass

Add API gst_base_src_new_segment() for subclass to be able to
signalling new GstSegment which should be applied to following
buffers.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/490>

taglist: Stop inlining gst_tag_list_copy

This way it gets exposed to bindings through GObject Introspection.

Same logic as with d1b2d3429c66d80b8d38f9afc6a8dfca49f3a71a

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/561>

check: Use g_thread_yield instead of g_usleep(1)

Since the commit
https://gitlab.gnome.org/GNOME/glib/-/commit/01c02ac08b682de622930b1278c9c14d0ffe6c49,
g_usleep(1) will be translated to Sleep(1) on Windows which means
sleep in 1 millisecond. But GLib provides g_thread_yield() API
which is exactly what we required here for thread context switching.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/559>

deviceprovider: Do static probe on start as fallback

For providers that don't support dynamic probing, just fall back to doing
a static one on start() to make the UI developers life easier.

This also means that the monitor doesn't need to call _can_monitor() before
calling start.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/353>

gstelementfactory: Fix missing features in case a feature moves to another filename

In case a plugin filename was renamed with the plugin being in the registry cache
the features were not loaded after the rename:

1) Cache of old/gone filename was loaded, features added
2) New filename was loaded, features where not added because
   they were already found in the registry.
3) In the end stale cache entries for files which are no longer there
   are removed, including the wanted features.
4) The cache gets updated without the features.

Fix this by also checking at (2) that the found feature is from the loaded plugin
and not from some stale cache entry.

This affected directsoundsink where libgstdirectsoundsink.dll was renamed
to libgstdirectsound.dll, losing the directsoundsink element in the process.

Fixes #290

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/102>

meson: set release date from .doap file for releases

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/555>

po: update POTFILES

xgettext: error while opening "gst/parse/grammar.y" for reading: No such file or directory

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/586

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/556>

ptp: Add GNU Hurd to the list of supported platforms and fix the Solaris name

https://mesonbuild.com/Reference-tables.html#operating-system-names has
the table of all supported names right now.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/583

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/554>

element: When removing a ghost pad also unset its target

Otherwise the proxy pad of the ghost pad still stays linked to some
element inside the bin, which is not allowed anymore according to the
topology.

In 2.0 this should be fixed more generically from inside GstGhostPad but
currently there is no way to get notified that the ghost pad is
unparented.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/553>

Back to development

Release 1.17.2

stream: Don't use GST_FIXME_OBJECT() when generating a random stream id if the caller didn't provide one

That would call into gst_info_describe_stream(), which takes the same
mutex a second time and then deadlocks.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/552>

gstutils: fix link in parse_bin_from_description_full doc

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/475>

gstbin: Fix docs typo

element-added-deep -> deep-element-added in the GstBin doc header

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/547>

docs: Specify UTF-8 encoding everywhere

Otherwise some non-English character might be broken depending on
OS and/or locale.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/545>

hooks: add opt-in cache update hook

CI now checks that plugin caches are up to date, for example
when adding a new property to an element.

This is something pretty easy to forget, and it can be checked
in a pre-commit hook provided the cache generator generates no
unnecessart diff on the developer's machine. This is now the
case for me in core, -base and -good, and eventually all the
repositories should behave appropriately, at least on my
development machine.

The new check in the pre-commit hook is only performed when
the user is in the development environment (it checks
$MESON_BUILD_ROOT to determine that), and when the developer
has opted-in by setting `GST_CACHE_HOOK=enabled`. That is
because the hook will actually rebuild the cache with ninja,
and modify it in the source directory, that's not a behaviour
we want to enable by default.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/546>

gst-inspect: Use gst_info_strdup_vprintf to print string

g_vprintf() will write a string binary to stdout directly using fwrite().
So, depending on character in the string, fwrite to stdout can
print broken one but printf family might not cause the issue.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/544>

bus: clear bus->priv->signal_watch immediately when the source is removed

There is a race-condition that can trigger the assertion in
gst_bus_add_signal_watch_full():

If gst_bus_add_signal_watch_full() is called immediately after
gst_bus_remove_signal_watch() then bus->priv->signal_watch may still be set
because gst_bus_source_dispose() or gst_bus_source_finalize() was not yet
called.
This happens if the corresponding GMainContext has the source queued for
dispatch. In this case, the following dispatch will only unref and delete
the signal_watch because it was already destroyed. Any pending messages
will remain until a new watch is installed.

So bus->priv->signal_watch can be cleared immediately when the watch is
removed. This avoid the race condition.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/543>

gst-hotdoc-plugins-scanner: serialize interfaces

gst-hotdoc-plugins-scanner: don't instantiate base classes

gst-hotdoc-plugins-scanner: serialize parents in hierarchy when needed

docs: Document signals and properties only for current type