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After a memory has been unmapped, protection mode can now be changed
when mapping it again.

See https://bugzilla.gnome.org/show_bug.cgi?id=789952.

Part-of: <gstreamer/gst-plugins-base!895>

Part-of: <gstreamer/gst-plugins-base!897>

Part-of: <gstreamer/gst-plugins-base!899>

OutputSlotInfo doesn't hold ref of queue, so gst_bin_remove()
will free the queue memory.

Part-of: <gstreamer/gst-plugins-base!888>

Setting telemetry options, even to zero, causes libtheora to enable an expensive code path. For large enough videos (e.g. 1920x1080) this can increase the time to decode each frame by 30-40 ms, which can be enough to cause noticeable stutter.

Part-of: <gstreamer/gst-plugins-base!887>

GLSLstage creates the glShader using glCreateShader, but never calls
glDeleteShader if the glShader is not used anymore. This forces the GL
library to keep the compiled shader around, because it might be used in
the future. Therefore, the glShader is leaked whenever a GLSLStage is
destroyed.

Fix the leak by deleting the glShader when finishing the GLSLStage.

Part-of: <gstreamer/gst-plugins-base!886>

Part-of: <gstreamer/gst-plugins-base!882>

Otherwise setting the property on the elements has no effect at all
because it's immediately reset during startup.

Part-of: <gstreamer/gst-plugins-base!881>

Demonstrate a way to select multiple streams

Part-of: <!880>

It's required for users to be able to figure out associated GstStream
object with a pad on pad-added callback.

Part-of: <gstreamer/gst-plugins-base!880>

Part-of: <gstreamer/gst-plugins-base!876>

On macOS, for example, "text/*" can be returned as mimetype for
plaintext files but we don't allow '*' in structure names and this would
cause critical warnings.

It's a valid mimetype but not a valid structure name.

Fixes gstreamer/gstreamer#616

Part-of: <gstreamer/gst-plugins-base!875>

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: <gstreamer/gst-plugins-base!874>

Numerical representation of GstVideoFormat is not debugging
friendly

Part-of: <gstreamer/gst-plugins-base!822>

Otherwise default handler will try to forward it to sink element
or srcpad which might not be available at that moment.

Part-of: <gstreamer/gst-plugins-base!867>

Wait all buffers to be consumed before sending flush seek event,
so that checking timestamp and segment as expected.

Part-of: <gstreamer/gst-plugins-base!816>

This seems like an obvious mistake, since `modified_caps` was created
but not used.

Part-of: <gstreamer/gst-plugins-base!868>

Part-of: <gstreamer/gst-plugins-base!868>

We validate the header extensions length of an RTP buffer by comparing
it against the block size. Since we multiply the length in words by 4 to
get the length in bytes, a suitably large length could cause a wrapround
of the uint16, giving a lower length which erroneously passes the check
and allows the buffer to be mapped.

Part-of: <gstreamer/gst-plugins-base!864>

Documentation for the parameter and return value don't show up when
this header mismatches the function it tries to describe.

Part-of: <gstreamer/gst-plugins-base!814>

The initial streams-selected message might not match any select-streams,
in which case it is currently overriden with GST_SEQNUM_INVALID.

Related to:

- gstreamer/gstreamer-rs!601

Part-of: <gstreamer/gst-plugins-base!860>

Occasionally, a clean build would fail like this:

    In file included from ../subprojects/gst-plugins-base/tests/examples/gl/gtk/gstgtk.c:24:
    ../subprojects/gst-plugins-base/gst-libs/gst/gl/gl.h:25:10: fatal error: gst/gl/gl-enumtypes.h: No such file or directory
       25 | #include <gst/gl/gl-enumtypes.h>
          |          ^~~~~~~~~~~~~~~~~~~~~~~

Add the missing dependency so that the headers are generated beforehand.

Part-of: <!855>

This is explicitly specified as valid in the RFC, where the
syntax for both parameters is:

";" "client_port" "=" port [ "-" port ]
";" "server_port" "=" port [ "-" port ]

This is useful for applications where RTCP is either not necessary
or not possible.

Part-of: <gstreamer/gst-plugins-base!846>

Fields really should alternate in this mode.

Part-of: <gstreamer/gst-plugins-base!852>

When user is passing the actual interlace-mode when calling
gst_video_decoder_set_interlaced_output_state() it should not be
overidden by the input interlace-mode.

Needed to fix #825 as we want to keep interlace-mode=interleaved from
parsers and have the OMX decoder producing interlace-mode=alternate.

Part-of: <gstreamer/gst-plugins-base!852>

Part-of: <gstreamer/gst-plugins-base!852>

Tested on x86, x86_64, armv7l, aarch64.

Part-of: <gstreamer/gst-plugins-base!854>

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: <gstreamer/gst-plugins-base!854>

Apparently the sinkpad caps can get cleared when shutting down the
pipeline while the sink is working, provoking a critical warning.

Part-of: <gstreamer/gst-plugins-base!842>

This takes the first running time and the first after each flush-stop as
an offset for the running time that is rendered.

Part-of: <!737>

There are three instances where in- and outbuf have been swapped. This
didn't affect the correctness of the libs *filter code, but the
videoscale implementation swapped the arguments of meta->transform_func.

Part-of: <gstreamer/gst-plugins-base!853>

When we'll depend on Meson >=0.55 this can be replaced by [provide]
section in gst-build's pango.wrap file. The dependency variable name can
also be dropped when pango is updated to use override_dependency:
https://gitlab.gnome.org/GNOME/pango/-/merge_requests/250

Part-of: <gstreamer/gst-plugins-base!844>

Both "\" and "/" separators are allowed on Windows but the problem
is that "\" is not converted to "\\" in this case.
It will result to unknown/unrecognized character escape sequence.

Part-of: <gstreamer/gst-plugins-base!818>

Part-of: <gstreamer/gst-plugins-base!836>

Don't overead memory.

Fixup for gstreamer/gst-plugins-base!755

Part-of: <gstreamer/gst-plugins-base!823>

This allow opting out items of the builds the depends on QT5 library.
Auto-detection of QT5 in cross-build requires host tools to match with the
sysroot, and detection of mis-match is not fully reliable.

Part-of: <!817>

Part-of: <gstreamer/gst-plugins-base!815>

Increases the throughput of compositing by using more CPU cycles across
multiple threads.  Simple cases (the output contains one pixel from at
most one input) can have up to a 70% increase in throughput.  Not so
simple cases are limited by the region with the most number of
composite operations.

Part-of: <gstreamer/gst-plugins-base!755>

Rename remaining `gst_video_color_transfer_{encode,decode}` functions on
the `GstVideoTransferFunction` enumeration to
`gst_video_transfer_function_{encode,decode}` permitting
gobject-introspection to turn these into associated functions and place
them under the respective `<enumeration>` block in gir XML files.

Part-of: <gstreamer/gst-plugins-base!805>