Commit Graph

7802 Commits

Author SHA1 Message Date
Michael Tretter
c448b938f7 backend-drm: always get pending_state from backend
The pending_state is already stored in the backend and can be directly retrieved
from there.

This avoids involving the compositor in passing state between the repaint
phases for a single backend.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
2022-04-06 12:47:05 +02:00
Daniel Stone
c3415aed23 fullscreen-shell: Use weston_curtain for black view
Use the common helper provided by the shell-utils helper dependency,
rather than rolling our own.

This commit currently introduces no functional change to
fullscreen-shell, as the 'curtain' provided by shell-utils behaves
identically to the previous solid-color surface created by
fullscreen-shell, given the parameters provided to
weston_curtain_create().

However, now that a common weston_curtain implementation is being used
rather than an open-coded variant, future changes to the implementation
of weston_curtain will result in changes to this code called by
fullscreen-shell, although it is intended that these will not result in
any user-visible behavioural changes.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
b94d69b926 fullscreen-shell: Link with shell-utils helpers
Unlike desktop-shell and kiosk-shell, the fullscreen-shell does not link
with the common shell-utils helpers. This is largely because
fullscreen-shell is largely in 'maintenance mode', seeing little more
than occasional bug fixes or changes required to accommodate new
interfaces.

This commit adds a dependency from fullscreen-shell to use the
shell-utils helper, in order to allow fullscreen-shell to use the new
weston_curtain infrastructure, rather than continuing to open-code the
common pattern of creating a surface and view consisting only of a solid
colour for the background of fullscreen surfaces which do not wholly
cover the output.

In doing this, the 'surface_subsurfaces_boundingbox()' function is
removed, as this has been duplicated between the fullscreen-shell and
the common helper 'library'.

There is no functional change within this commit, as the two functions
were identical, other than a change to the comment which identifies a
known bug within this helper.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
577a832f41 test/desktop-shell: Use weston_curtain
Use the helper we have for these, rather than open-coding.

This commit is not believed to result in any functional changes.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
6cb2526b67 Move shell-utils to its own directory
shell-utils contains a number of helpers which are currently in use by
both desktop-shell and kiosk-shell. In order to extend this use to
fullscreen-shell as well (which can benefit from reusing the
weston_curtain infrastructure to be able to create solid-colour views
which may or may not be opaque, as well as one function within
fullscreen-shell which was copied wholesale to shell-utils), we need to
create a separate Meson dependency object, and avoid the existing
pattern of including the source from shared/ within the source list for
each shell.

This requires creating a new top-level directory for these shared helper
functions which are required by each shell, but are not part of
libweston in and of itself.

shell-utils depends on libweston-desktop; libweston-desktop depends on
libweston; libweston depends on shared.

Thus it is not possible to expose a dependency object from the shared/
directory which declares a dependency on the libweston-desktop
dependency, as Meson processes directories in order and resolves
variable references as they are parsed.

In order to break this deadlock, this commit creates a new top-level
directory called 'shell-utils' containing only this file, which can be
parsed by Meson after libweston-desktop (making the libweston-desktop
Meson dependency variable available to the build file to declare a
dependency on that), but before the shells (making the new Meson
depenendency object available to each shell which wishes to use it).

This commit contains no functional changes to any observable code.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
15a553053a desktop-shell: Reuse curtains for fades
Use the common infrastructure we have, rather than open-coding again.

In changing to the common weston_curtain infrastructure which was
introduced in a previous commit, there are two small functional
derivations.

After adding the view to a layer, we explicitly call
weston_view_geometry_dirty(). This is believed to have no functional
impact, as weston_views have their geometry-dirty flag set when they are
created.

weston_surface_damage() is also called to ensure that the surface is
scheduled for a repaint. As there is currently no good common mechanic
in the common code to ensure that output repaint will occur, due to the
damage propagating outwards from the weston_surface, we are forced to
call this to predictably ensure that the output will be repainted after
we have made this change to the scene graph which should result in the
user observing the new content being repainted.

It is possible that these changes are not strictly required in order for
the correct behaviour to occur. However, it is felt that explicitly
adding these calls is perhaps the least fragile way to ensure that the
behaviour continues to be correct and breakage is not observed,
especially with both view mapping and surface damage identified as areas
for future work which could be beneficial to Weston. If it is felt that
these calls can be removed, then this is certainly possible at a later
stage.

Lastly, there are many users within desktop-shell of the common pattern
of creating a weston_curtain and inserting it into the scene graph to be
painted. These users have been an area of both theoretical concern and
real-life observed fragility and breakage recently. By making each user
follow a common and predictable pattern of usage, each user is no longer
its own special case. This should make it easier to make the
desktop-shell codebase more robust, not only simplifying the codebase,
but improving observed behaviour.

In doing this, it is hoped that future structural and interface changes
become easier to make, allowing us to improve some of the more difficult
corners of the libweston API.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
dc0f73bcac shell: Encapsulate weston_curtain in its own struct
This will allow us to create a solid weston_buffer as well, since we
need to store that separately.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
e031397e09 desktop-shell: Reuse curtains for focus animations
Just as we do for fullscreen backgrounds, reuse the curtain infrastructure
for focus animations.

This introduces a small functional change, in that the surface's output
is no longer directly assigned. Instead, we call
weston_view_set_output() ourselves. As setting the weston_view's
position (done from the common helper function of weston_curtain_create
which has been introduced in previous commits) will call
weston_view_set_position(), the view's geometry will be dirtied as a
result.

When the geometry of a weston_view is dirty, it is marked to be updated,
which will occur whilst traversing the view list during output repaint.
This occurs for every view which is currently assigned to a layer; when
building the view list, any view reachable through the view list whose
geometry is dirty will have its position recalculated and an output
assigned. Doing so results in the surface's current output being
updated.

It is believed that there is no functional impact from the
weston_surface not having a primary output assigned between creation and
output repaint being called.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
bd9b0676dd shell: Make input capture optional for curtains
desktop-shell's focus surfaces want to reuse this, but they don't want
to capture the input, instead allowing it to fall through.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
64ef87554b desktop-shell: Clean up fullscreen black view code
Rationalise it a little bit so we don't need pre-declarations of static
functions, and the order of creation more closely matches the others,
including making the same calls to explicitly set the output.

Doing this makes the behaviour match the other users of the same code
pattern. In making them the same, we make desktop-shell code a little
less magically divergent where people might wonder what the correct
pattern is to use. After we have moved all users to a uniform pattern,
later commits are then able to migrate these users to common helper
code, which reduces code duplication, improves code clarity as it is no
longer necessary to wonder about the exact semantics of every
special-case user of this common pattern, and makes it easier to make
interface changes which improve and clarify the patterns which are
prevalent throughout the desktop-shell code.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
de0cd53264 desktop-shell: Remove redundant geometry dirty call
Dirtying the geometry only sets a flag on the view saying that the
geometry is dirty, so we don't need to do it twice back-to-back.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
791e8b1c5f desktop-shell: Fix opaque region co-ordinate confusion
Opaque regions are in surface co-ordinate space, not global co-ordinate
space, so the region should be anchored to (0,0).

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
e81b8d7cc9 shell: Add alpha to weston_curtain_create
Not all solid-colour views want to be opaque: sometimes we use them with
non-opaque alpha values in order to shade views underneath them.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
d21563360a shell: Move weston_curtain_create params into the struct
Given that we have a struct for argument params, we might as well use it
rather than have them split between the struct and native params. For
consistency between the implementations, this also includes a shift from
float to int positioning for the base offset within the compositor's
global co-ordinate space.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
3a298b0b05 shell: Rename weston_solid_color_surface to weston_curtain_params
The name implied that it was a surface in and of itself, rather than
parameters used by a helper to create a surface and view.

Rename it now that we have weston_curtain as a name, and clean up
initialisers.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
b77c2374ee shell: Rename solid_color_surface to weston_curtain
create_solid_color_surface actually returns a weston_view that it
creates internally. Since weston_solid_color_view is long and dull,
rename it to weston_curtain.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
7059ec7807 desktop-shell: Explicitly destroy black views on shutdown
desktop_shell_removed() won't get called when we shut down, so
explicitly destroy the fullscreen black view.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
c8a2fb7a40 pixel-formats: Add XYUV8888 format
XYUV8888 support was added to gl-renderer in 30104bd89a, but not to
pixel-formats. Oops.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
Daniel Stone
f48cf18a16 compositor: Fix harmless potential buffer overflow
We could overflow a local buffer if there were more than ten million
concurrently active displays within the current user's session. This
seems vanishingly unlikely, and harmless, but does at least squash a
compiler warning emitted by gcc 12+.

Signed-off-by: Daniel Stone <daniels@collabora.com>
2022-03-31 17:15:55 +00:00
nerdopolis
cdfe94b105 launcher-logind: Don't check wl->vtnr before returning it.
Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
2022-03-16 13:12:20 +00:00
Pekka Paalanen
b3ba1becba libweston: remove fbdev backend
Fbdev backend was deprecated in the Weston 10.0.0 release with
6338dbd581. Before that, I suggested
already in 2019 to remove it, but it was too soon then. Now it seems the
final voices asking for fbdev to be kept have been satisfied, see the
linked issue.

Fbdev-backend uses a kernel graphics UAPI (fbdev) which is sub-par for a
Wayland compositor: you cannot do GPU accelerated graphics in any
reasonable way, no hotplug support, multi-output support is tedious, and
so on. Most importantly, Linux has deprecated fbdev a long time ago due
to the UAPI fitting modern systems and use cases very poorly, but cannot
get rid of it if any users remain. Let's do here what we can to reduce
fbdev usage.

I am doing color management related additions to libweston which require
adding checks to every backend. One backend less is less churn to write
and review.

Libweston major version has already been bumped to 11, so the next
release will be Weston 11, without fbdev. enum weston_compositor_backend
entries change their numerical values.

Fixes: https://gitlab.freedesktop.org/wayland/weston/-/issues/581

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-15 11:32:46 +02:00
Pekka Paalanen
18df9108ea man: replace tablet shell with kiosk shell
Tablet shell was removed in 873b515aee in
2013. Time to remove the hopefully last reference to it.

We also gained kiosk shell in the mean time, so mention that instead.
Yes, it's a bit of a lie, because we also have ivi-shell and
fullscreen-shell, but I heard they might be on their way out, so I
didn't add them here.

Would be nice to add kiosk-shell in the SHELLS section too, but in this
patch I am only concerned about dropping the tablet shell reference.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 19:42:33 +02:00
Pekka Paalanen
bfefe8e8d4 man: add gbm-format in output section
Looks like at least from 2016 onwards the gbm-format option has also
been recognized in an output section.

Time to document that.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 19:42:33 +02:00
Pekka Paalanen
ce059cffdb man: expand on gbm-format
Since 62a9436417 the gbm-format option has
recognized all pixel formats listed in libweston/pixel-formats.c.

Clarify what pixel formats can be used.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 19:42:33 +02:00
Pekka Paalanen
1f5e19fab3 man: move pageflip-timeout from weston.ini(5) to weston-drm(7)
This option is used only with the DRM-backend. Options in weston.ini(5)
should be either generic or for backends that do not have their own man
page yet.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 19:42:33 +02:00
Pekka Paalanen
79f73d2247 man: move gbm-format from weston.ini(5) to weston-drm(7)
This option is used only with the DRM-backend. Options in weston.ini(5)
should be either generic or for backends that do not have their own man
page yet.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 19:42:33 +02:00
Marius Vlad
d284ab0322 pipewire,remoting,tests: Replace asprintf w/ str_printf
We have a string helper which wraps asprintf(). Uses that one because it
clears out the destination string, but also it won't return the number
of bytes unlinke asprintf().

Fixes warnings like:
warning: ignoring return value of ‘asprintf’ declared with attribute
‘warn_unused_result’.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
2022-03-14 15:51:09 +02:00
Pekka Paalanen
3e94836a63 tests: add get_double in config-parser tests
weston_config_section_get_double() was not covered with tests before.

This patch follows the testing style already present in the file.

Cannot use ZUC_ASSERT_EQ() here, because that would convert the values
to integers before comparison. Luckily, simple strict equality
comparison works here, because we are testing conversion to float, not
the results of lossy calculations.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 08:50:30 +00:00
Pekka Paalanen
0a38fc7e75 shared: fix WL_EXPORT style in config-parser.c
This was the only file in Weston using WL_EXPORT on its own line. Fix
the style to follow everything else.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 08:50:30 +00:00
Pekka Paalanen
f58a3a7e1d include: drop unused config-parser.h types
Apparently these are not used anywhere. Garbage-collect them, and trim
some empty lines.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-14 08:50:30 +00:00
Robert Mader
2669853562 clients/simple-dmabuf-feedback: Add fallback print method for unknown formats
Using `pixel_format_get_info()` can result in formats being
reported as `UNKNOWN` when used on compositors other than Weston.

As `weston-simple-dmabuf-feedback` somewhat succeeds `wayland-info`
as tool for `zwp_linux_dmabuf_v1` debugging from version 4 on, copy
the approach from the later for these cases.

Signed-off-by: Robert Mader <robert.mader@collabora.com>
2022-03-11 13:56:17 +01:00
Robert Mader
f81aacdf2f pixel-formats: Add support for 64bbp float RGB formats
These are supported by some other compositors already.
Add them to the list so `weston-simple-dmabuf-feedback`
reports them correctly.

Signed-off-by: Robert Mader <robert.mader@collabora.com>
2022-03-11 13:55:19 +01:00
Marius Vlad
c19cf3d684 libweston: Enable logging for libseat launcher
The built-in backend of libseat requires users to enable a logging
level in order for libseat to start writing out log messages.  For that
to happen we split out the info and error log level messages into the
compositor's log scope, while debug level messages go into a dedicated
scope.

With that, this patch brings in a new scope, called libseat-debug, which
users need to explicity create a subscription for it as to retrieve/have
access to debug message coming out of libseat. Note that by default we
have a subscription for the log-scope so any errors/info from libseat
would be displayed to the user.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
2022-03-10 17:13:16 +02:00
Marius Vlad
e9fe66a91c weston-log: Extract helper for generating a time stamp
As we might be needing it for other scopes extract the time stamp
genration into a helper.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
2022-03-10 17:11:31 +02:00
Marius Vlad
d40cedc8af desktop-shell: Remove wl_shell_surface::resize enum
And use the ones provided by libweston-desktop, as they are one
and the same.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
2022-03-08 15:12:56 +02:00
Derek Foreman
7cae2a1fb0 backend-wayland: Stop supporting wl_shell
This has been deprecated for a long time, so let's stop supporting
it entirely.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
2022-03-08 15:12:56 +02:00
Derek Foreman
e6b8f5a5e4 remove wl_shell
This has been deprecated long enough, I think it's time to say goodbye.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
2022-03-08 15:12:56 +02:00
Pekka Paalanen
5ba7ae2937 tests: preserve ivi runner section
Everywhere else where use this trick, we also have 'used' in the
attributes, except here. Make this consistent.

Fixes: https://gitlab.freedesktop.org/wayland/weston/-/issues/517

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-08 14:50:41 +02:00
Michael Olbrich
78c94d0719 libweston: explicitly cancel start_drag if no matching input device is found
Otherwise, the client will assume that dragging is in progress and remains in
that state forever.
This can happen when weston processes the mouse up event just before the
start_drag() arrives.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
2022-03-04 11:51:01 +00:00
Pekka Paalanen
4fb095eca1 doc: running on different seat with libseat
When using the libseat launcher, there is one more detail to take care:
stop libseat from managing the VT.

A normal user does not have permissions to manage a VT, so launching
would just fail. In this use case you also do not want to be managing
the VT, because your normal desktop is already owning the seat
associated with the VT.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-04 11:22:47 +00:00
Pekka Paalanen
c26326bfb1 doc: expand on libseat via ssh
Give a little more details about how running Weston via ssh or serial
terminal is best done, now that launcher-direct and weston-launch are
gone.

Hopefully the removal of launcher-direct also makes less people run
Weston as root, when seatd is the privileged process. Running 'weston'
as root might still work through libseat's builtin backend without
seatd.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-04 11:41:42 +02:00
Pekka Paalanen
952a951662 build: enable libseat support by default
Now that launcher-direct and weston-launch are gone, libseat takes their
place.

Enable libseat support by default to give users a hint in case they miss
either of those.

People who used to get launcher-logind when libseat support was disabled
will now be using logind through libseat. This should not cause any
regressions, and if it does, we want to hear about them, because the
separate logind-launcher is also planned to be deprecated in the future.

Disabling logind-launcher by default is left for when it actually gets
deprecated.

In case someone does not have libseat available but do have logind
running, they can just disable libseat support.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-04 11:20:16 +02:00
Derek Foreman
2c91c70250 launchers: Remove --tty option
This doesn't work with any of the launchers we've kept. Remove the option
and all the bits that handle it.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
2022-03-03 17:00:15 -06:00
Derek Foreman
a96dfc7098 launchers: remove launchers
Moving forward we're going to be supporting libseat and logind as our
only launchers. We're doing this to reduce our maintenance burden,
and security impact.

Libseat supports all our existing use cases, and seatd can replace
weston-launch so we no longer have to carry a setuid-root program.

This patch removes weston-launch, and launcher-direct, leaving only
libseat and logind.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
2022-03-03 16:54:14 -06:00
Vitaly Prosyak
87f2d09f18 color-lcms: Always use cmsContext for LCMS API which has THR suffix
Fix a typo. No CM functional change, just redirect LCMS error
into  created cmsContext which output into weston log.

Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
2022-03-01 22:49:39 -05:00
Pekka Paalanen
e2ee2b56f9 tests: make vertex-clip use WESTON_EXPORT_FOR_TESTS
This is probably the simplest case to demonstrate how to use
WESTON_EXPORT_FOR_TESTS.

Previously, vertex-clip test re-built vertex-clipping.c for itself. Now
it directly links in gl-renderer.so instead as that is where
vexter-clipping.c gets built into for actual use. This probably will not
work for any installed program, but luckily tests are never installed,
so Meson makes sure the DSO is found.

Unfortunately we cannot remove the definition of dep_vertex_clipping
yet, because clients/cliptest.c needs it.

This makes vertex-clip test depend on GL-renderer, but that is where the
code is really used.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-01 13:32:15 +00:00
Pekka Paalanen
32a790f774 shared: add WESTON_EXPORT_FOR_TESTS
This is a new function exporting macro that intends to make writing unit
tests in the Weston test suite easier.

A test needs to access a private function to be able to verify its
behavior. Previously we have used things like putting such functions in
a separate .c file and then building that file into the corresponding
test. That is a bit awkward and can lead to proliferation of arbitrary
.c files for no good reason. It may also require pre-processor magic,
and sometimes copying chunks of code causing a risk of deviating the
code being tested from the code actually used.

This patch proposes another approach: a private export from a DSO.
Except, private exports do not really exist, and this is just a normal
export with a specific C macro, and omitting the function from public
headers.

Once exported, a test program can link the DSO during build, be that a
shared library or even a plugin, use the private header declaring the
function, and simply call the function in the test.

The declaration of WESTON_EXPORT_FOR_TESTS is in shared/helpers.h so
that it is available to all components equally while still not being in
a public header. Other places that were considered:

- include/libweston/libweston.h is a public header, but external users
  should not know about the macro.

- libweston/libweston-private.h is too private and not available to all
  components, particularly color-lcms plugin.

- libweston/backend.h is not appropriate for color-lcms plugin either.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2022-03-01 13:32:15 +00:00
nerdopolis
8e2c67c317 clients/desktop-shell: Add a displayname= option for launchers
Signed-off-by: n3rdopolis <bluescreen_avenger@verizon.net>
2022-02-24 00:38:55 +02:00
James Le Cuirot
89587db3cb meson.build: Fix -Dbackend-default=auto following fbdev deprecation
Signed-off-by: James Le Cuirot <chewi@gentoo.org>
2022-02-23 15:57:57 +02:00
Takuro Ashie
351e6a4b21 Don't send compositor's global key bindings to the input method
Although weston_compositor_run_key_binding() is called when the current
keyboard grab is default_grab or input_method_grab, swallowing the key
event is processed only on default_grab. As a result key events that
should be swallowed are sent to the input method unexpectedly.

For example, when a user press `Super + s` on weston-editor to take a
screen shot, `s` will be unexpectedly entered to the text area.
I confirmed such behaviour with weston-simple-im and fcitx5-5.0.10.
It doesn't occur with weston-keyboard because it doesn't install
keyboard grab.

Signed-off-by: Takuro Ashie <ashie@clear-code.com>
2022-02-23 15:40:33 +02:00