| Commit message (Collapse) | Author | Age | Files | Lines |
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Back in the olden days, mpv's wayland backend was driven by the frame
callback. This had several issues and was removed in favor of the
current approach which allowed some advanced features (like
display-resample and presentation time) to actually work properly.
However as a consequence, it meant that mpv always rendered, even if the
surface was hidden. Wayland people consider this "wasteful" (and well
they aren't wrong). This commit aims to avoid wasteful rendering by
doing some additional checks in the swapchain. There's three main parts
to this.
1. Wayland EGL now uses an external swapchain (like the drm context).
Before we start a new frame, we check to see if we are waiting on a
callback from the compositor. If there is no wait, then go ahead and
proceed to render the frame, swap buffers, and then initiate
vo_wayland_wait_frame to poll (with a timeout) for the next potential
callback. If we are still waiting on callback from the compositor when
starting a new frame, then we simple skip rendering it entirely until
the surface comes back into view.
2. Wayland on vulkan has essentially the same approach although the
details are a little different. The ra_vk_ctx does not have support for
an external swapchain and although such a mechanism could theoretically
be added, it doesn't make much sense with libplacebo. Instead,
start_frame was added as a param and used to check for callback.
3. For wlshm, it's simply a matter of adding frame callback to it,
leveraging vo_wayland_wait_frame, and using the frame callback value to
whether or not to draw the image.
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Add a property that returns whether the window is focused, currently
only for X11 and Wayland.
My use cause for this is having an equivalent of pause-when-minimize.lua
for tiling window managers: make mpv play only while it's in the current
workspace or is focused (I'm fine with either one but prefer focus).
On X I do this by observing display-names, which is empty when the
rectangles of the display and mpv don't intersect, but on Wayland its
value doesn't change when mpv leaves the current workspace (and the same
check doesn't work since the geometries still intersect).
This could later be made writable as requested in #6252.
Note that on Wayland se shouldn't consider an unactivated window with
keyboard input focused.
The wlroots compositors I tested set activated after changing the
keyboard focus, so if you set wl->focused only in
keyboard_handle_enter() and keyboard_handle_leave() to avoid adding the
"has_keyboard_input" member, focused isn't set to true when first
opening mpv until you focus another window and focus mpv again.
Conversely, if that order can't be assumed for all compositors, we
should toggle wl->focused when necessary in keyboard_handle_enter() and
keyboard_handle_leave() as well as in handle_toplevel_config().
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Why on earth did I ever bother with this dumb crap? If we do not have
any presentation statistics, just set the relevant vo_sync_info values
to -1 to disable it. It's much simpler than using mp deltas and trying
to keep up with mpv's clock. This also appears to fix audio/video
desynchronization if you start a video with the pause flag, move it out
of view, and then unpause it. Technically harmless since the video
wasn't even in view and putting back in view recovered it, but a quieter
terminal is better.
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The original goal was to simplify all this logic to make it less fragile
and breaky. Unfortunately, that didn't exactly happen and things might
actually be more complicated in some ways (well in other ways it's
simplier). There's a lot of negotiation back and forth between the
client and the compositor regarding sizes. The client (aka mpv) can do a
resize on its own. But also the compositor can request its own resize
(which we should be nice and listen to of course). The older method had
a lot of breakfalls/edgecases that were gradually patched up as time
went on, but that approach is really fragile. This refactor should,
hopefully, be on a more solid foundation.
Don't call any of the xdg toplevel state changing functions
(fullscreen, maximized, etc.) directly. Use the toggle wrapper
functions. These signal that the state was changed which is later
handled in the toplevel listener.
Introduce a new vdparams variable that stores the actual dimensions of
the video. This does create some new (but neccesary) complexity.
wl->vdparams stores what the actual dimensions of the video are
(according to mpv). wl->window_size stores the last size of the window
(so it includes any manual resizes for instance). wl->geometry is the
actual size of the output that gets displayed on the screen.
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When using presentation time, we have to be sure to update the ust when
no presentation events are received to make sure playback is still
smooth and in sync. Part of the recent presentation time refactor was to
use the presentation discarded event to signal that the window is
hidden. Evidently, this doesn't work the same everywhere for whatever
reason (drivers?? hardware??) and at least one user experienced issues
with playback getting out of sync since (presumably) the discarded event
didn't occur when hiding the window. Instead, let's just go back to the
old way of checking if the last_ust is equal to the ust value of the
last member in the wayland sync queue. Fixes #8010.
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The motivation for this change was a segfault caused by e107342 which
has complicated reasons for occuring (i.e. I'm not 100% sure but I think
it is a really weird race). The major part of this commit is moving the
initialization of presentation listener to the frame_callback function.
Calling it in swap_buffers worked fine but in practice it meant a lot of
meaningless function calls if a window was hidden (the presentation
would just be immediately discarded). By calling it in frame_callback,
we ensure the listener is only created when it is possible to receive a
presentation event.
Of course calling the presentation listener in feedback_presented or
feedback_discarded was considered, but ultimately these events are too
slow. Receiving the ust/msc/sbc triplet here and then passing it to mpv
results in higher vsync judder since there is (likely) not enough time
before the next pageflip. By design, the frame callback is meant to give
us as much time as possible before the next repaint so calling it here
is probably optimal.
Additionally, we can make better use of the feedback_discarded event.
The wp_presentation_feedback should not be destroyed here. It will be
taken care of either when we get feedback again or when the player
quits. Instead what we can do is set a bool that tells wayland_sync_swap
to update itself based on mp_time delta. In practice, the result is not
any different than before, but it should be more understandable what is
going on now.
Of course, the segfault mentioned at the beginning is fixed with this as
well.
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Sway 1.5 started sending more pointer motion events to mpv which broke
the autohiding behavior. The cursor would appear again if you
fullscreened. Sway had a good reason to do this because certain
applications had inconsistencies between hardware cursor and software
cursor without rebasing on state changes[1]. So mpv needs to take this
special case into consideration.
Initially, simply checking mouse coordinates for changes was considered,
but this doesn't work. All coordinates are surface-local in wayland so
something can appear to move in the local coordinate space but not
globally. You're not allowed to know global mouse coordinates in
wayland, and we don't care about local coordinate changes in mpv so this
approach isn't viable.
Instead, let's just keep track of a local state change. If the toplevel
surface changes in some way (fullscreen, maximized, etc.), then just set
a bool that lets us ignore the mp_input_set_mouse_pos function. This
keeps the cursor from appearing simply because the state was changed
(i.e. fullscreening). For compositors that don't send pointer motion
events on a state change, this does technically mean that the initial
mp_input_set_mouse_pos is never set. In practice, this isn't a
noticeable difference though because moving a mouse generates a ton of
motion events so you'll immediately see it on the second motion event.
[1] https://github.com/swaywm/sway/issues/5594
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Should have been removed in 055a490 but was forgetten.
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One not-so-nice hack in the wayland code is the assumption of when a
window is hidden (out of view from the compositor) and an arbitrary
delay for enabling/disabling the usage of presentation time. Since you
do not receive any presentation feedback when a window is hidden on
wayland (a feature or misfeature depending on who you ask), the ust is
updated based on the refresh_nsec statistic gathered from the previous
feedback event.
The flaw with this is that refresh_nsec basically just reports back the
display's refresh rate (1 / refresh_rate * 10^9). It doesn't tell you
how long the vsync interval really was. So as a video is left playing
out of view, the wl->last_queue_display_time becomes increasingly
inaccurate. This led to a vsync spike when bringing the mpv window back
into sight after it was hidden for a period of time. The hack for
working around this is to just wait a while before enabling presentation
time again. The discrepancy between the "bogus"
wl->last_queue_display_time and the actual value you get from the
feedback only happens initially after a switch. If you just discard
those values, you avoid the dramatic vsync spike.
It turns out that there's a smarter way to do this. Just use mp_time_us
deltas. The whole reason for these hacks is because
wl->last_queue_display_time wasn't close enough to how long it would
take for a frame to actually display if it wasn't hidden. Instead, mpv's
internal timer can be used, and the difference between wayland_sync_swap
calls is a close enough proxy for the vsync interval (certainly better
than using the monitor's refresh rate). This avoids the entire conundrum
of massive vsync spikes when bringing the player back into view, and it
means we can get rid of extra crap like wl->hidden.
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Resizing the window while preserving the aspect ratio actually kind of
sucked. The window size could make big dramatic changes which was pretty
unintuitive with respect to where the mouse was actually located.
Instead, let's just do some math to ensure that the window size is
always contained inside the width/height reported by
handle_toplevel_config while preserving the aspect ratio. Fixes #7426.
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There were a couple of erroneous things in the handle_toplevel_config
function. Firstly, looping through the different states was not handled
correctly. Launching a window as maximized (can happen in sway for
example) was always stuck on true and would never be set to false. Fix
this by always checking if XDG_TOPLEVEL_STATE_MAXIMIZED is found or not.
Also do a similar thing for the fullscreen state.
Additionally, there were some issues with resizing windows and
window-scale going back to old sizes. The root of this problem is that
the width and height arguments of handle_toplevel_config aren't actually
guarenteed to be the actual width and height of the surface. There are
times when mpv will set the surface size on its own (like with
window-scale) which will be unknown to the toplevel listener. To
complicate matters, there are times when we do want to use the width and
height arguments (like when resizing with the mouse).
Fix this by checking if the width and height arguments reported by
handle_toplevel_config changed from the previous call of the function.
If the value is different, then we go ahead and use them when setting
mpv's geometry. If not, then we just ignore it.
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This originally existed as a hack for weston. In certain scenarios, a
frame taking too long to render would cause vo_wayland_wait_frame to
timeout which would result in a ton of dropped frames. The naive
solution was to just to add a slight delay to the time value. If a
frame took too long, it would likely to fall under the timeout value and
all was well. This was exposed to the user since the default delay
(1000) was completely arbitrary.
However with presentation time, this doesn't appear to be neccesary.
Fresh frames that take longer than the display's refresh rate (16.666 ms
in most cases) behave well in Weston. In the other two main compositors
without presentation time (GNOME and Plasma), they also do not
experience any ill effects. It's better not to overcomplicate things, so
this "feature" can be removed now.
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This small regression was introduced by #7216. Previously, the wayland
backend used a trick which kept track of the previous fullscreen state
and used that logic for showing the cursor. Since vo_opts now keeps
track of the current fullscreen state, most of this stopped being
neccessary.
However, there was one edge case where the cursor didn't
behave the same: passing a fullscreen flag for the inital window. The
cursor would initially be visible here which is not desirable. This can
be remedied pretty easily by just setting the cursor visiblity to false
if the pointer entry event occurs on fullscreen. The only thing we need
to do is to make sure that the autohide delay isn't completely disabled
(i.e. the cursor is always visible). Hence the need for the previous
commit.
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The remaining legacy VOCTRLs are for the fullscreen and border
properties. For fullscreen this largely just replacing the private
state field with the vo option but there are small semantic
differences that we need to be careful of.
For the border setting, it's trivial as we don't have external
mechanisms for changing the state, but I also can't test it as
I'm not using a compositor that supports it.
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I wanted to get this done quickly as I introduced the new VOCTRL
behaviour for minimize and maximize and it was immediately made
legacy, so best to purge it before anyone gets confused.
I did not sort out fullscreen as that's more involved and not something
I've educated myself about yet. But I did replace the VOCTRL_FULLSCREEN
usage with the new option change mechanism as that seemed simple
enough.
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Rather than hard-coding the edge grab zone width, we can make it
user configurable. It seems worthwhile to have separate configs
for pointer and touch usage as the defaults should be different,
and a user might have both input methods in use.
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Today, we support resizing wayland windows when we detect a touch
event in a defined grab zone. As part of implementing
pseudo-decorations, we should have equivalent functionality for
mouse input. And if we detect support for actual decorations we
will not activate the grab zone as the decorations will provide this.
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There's 2 stupid things here that need to be fixed. First of all,
vulkan wasn't actually using presentation time because somehow the
get_vsync function in context.c disappeared. Secondly, if the mpv window
was hidden it was updating the ust time based on the refresh_usec but
really it should simply just not feed any information to the vsync info
structure. So this adds some logic to assume whether or not a window is
hidden.
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The newest wayland changes have some new logic that make sense to expose
to users as configurable options.
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Use ust/msc/refresh values from wayland's presentation time in mpv's
ra_swapchain_fns.get_vsync for the wayland contexts.
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The old way of using wayland in mpv relied on an external renderloop for
semi-accurate timings. This had multiple issues though. Display sync
would break whenever the window was hidden (since the frame callback
stopped being executed) which was really annoying. Also the entire
external renderloop logic was kind of fragile and didn't play well with
mpv's internal structure (i.e. using presentation time in that old
paradigm breaks stats.lua).
Basically the problem is that swap buffers blocks on wayland which is
crap whenever you hide the mpv window since it looks up the entire
player. So you have to make swap buffers not block, but this has a
different problem. Timings will be terrible if you use the unblocked
swap buffers call.
Based on some discussion in #wayland, the trick here is relatively
simple and works well enough for our purposes. Instead we basically
build a way to block with a timeout in the wayland buffer swap
functions.
A bool is set in the frame callback function that indicates whether or
not mpv is waiting for a frame to be displayed. In the actual buffer
swap function, we enter into a while loop waiting for this flag to be
set. At the same time, the wl_display is polled to block the thread and
wakeup if it receives any events from the compositor. This loop only
breaks if enough time has passed or if the frame callback bool is
received.
In the near future, it is better to set whether or not frame a frame has
been displayed in the presentation feedback. However as a first pass,
doing it in the frame callback is more than good enough.
The "downside" is that we render frames that aren't actually shown on
screen when the player is hidden (it seems like wayland people don't
like that). But who cares. Accurate timings are way more important. It's
probably not too hard to add that behavior back in the player though.
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On wayland the cursor has to be configured each time the pointer enters.
Currently if the window (re)gains the focus, the pointer is not hidden,
even when configured. After the mouse has been moved the pointer hides
correctly.
https://wayland.freedesktop.org/docs/html/apa.html#protocol-spec-wl_pointer:
wl_pointer::enter - enter event
...
When a seat's focus enters a surface, the pointer image is undefined
and a client should respond to this event by setting an appropriate
pointer image with the set_cursor request.
Fixes #6185.
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
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This is the naming xdg-shell stable adopted, it doesn’t make much sense
to keep using “shell” everywhere with all functions calling it
“wm_base”.
Finishes what 76211609e3c589dafe3ef9a36cacc06e8f56de09 started.
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Window size should not change if the window has been maximized or tiled.
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This removes support for older compositors using the unstable version,
but those will still use Xwayland by default, so not a big loss.
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It seems the cursor hadn't had its position properly adjusted when scaled.
Hence, bring back correct buffer scaling to make the cursor look fine.
Also the cursor surface now gets created sooner so that's better.
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This commit:
- Implements output tracking (e.g. monitor plug/unplug)
- Creates the surface during registry (no other dependencies)
- Queues the callback immediately after surface creation
- Cleaner and better event handling (functions return directly)
- Better reconfigure handling (resizes reduced to 1 during init)
- Don't unnecessarily resize (if dimensions match)
Apart from that fixes 2 potential memory leaks (mime type and window
title), 2 string ownership issues (output name and make need to be
dup'd), fixes some style issues (switches were indented) and finally
adds messages when disabling/enabling idle inhibition.
The callback setter function was removed in preparation for the commit
which will use the frame event cb because it was unnecessary.
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This reverts commit 8d8d4c5cb1b3553215a8ba547d4db463fdc88831.
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The wayland code was written more than 4 years ago when wayland wasn't
even at version 1.0. This commit rewrites everything in a more modern way,
switches to using the new xdg v6 shell interface which solves a lot of bugs
and makes mpv tiling-friedly, adds support for drag and drop, adds support
for touchscreens, adds support for KDE's server decorations protocol,
and finally adds support for the new idle-inhibitor protocol.
It does not yet use the frame callback as a main rendering loop driver,
this will happen with a later commit.
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Not worth keeping 200 lines of untestable as of today code which might
be broken, if it hasn't been already.
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This fits natively into the vo/backend and allows to simplify the
polling code.
One new change is the fact that surface_handle_enter flags VO_EVENT_WIN_STATE
and VO_EVENT_RESIZE instead of only VO_EVENT_WIN_STATE. Before this, the code
hackily relied on the timeout and the loop in the wait_frame function to track
and set the scaling factor. Instead, this triggers mpv to run a schedule_resize
and adjust the new VO output dimensions immediately. This is also more accurate
since surface_handle_enter() gets called when a surface is created, moved and
resized, which is exactly what the rest of the player might be interested in.
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The wayland protocol exposes scaling done by the compositor to
compensate for small window sizes on small high DPI displays. If the
program ignores the scaling done, what'll happen is the compositor is
going to ask the program to be scaled down by N times the window size and
then it'll upscale the program's surface by N times. The scaling
algorithm seems to be bilinear so the scaling is quite obvious.
This commit sets up callbacks to listen for the scaling factor of each
output and, on rescale events, notifies the compositor that the
surface's scale is what the compositor asked for and changes the
player's surface to the appropriate size, causing no scaling to be done
by the compositor.
Compositors not supporting this interface will ignore the callbacks and do
nothing, keeping program behaviour the same. For compositors supporting
and using this interface (mutter), this will fix the rendering to be pixel
precise as it should be.
Both the opengl wayland backend and the wayland vo have been fixed to support
this. Verified to not break either on weston and mutter.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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This covers source files which were added in mplayer2 and mpv times
only, and where all code is covered by LGPL relicensing agreements.
There are probably more files to which this applies, but I'm being
conservative here.
A file named ao_sdl.c exists in MPlayer too, but the mpv one is a
complete rewrite, and was added some time after the original ao_sdl.c
was removed. The same applies to vo_sdl.c, for which the SDL2 API is
radically different in addition (MPlayer supports SDL 1.2 only).
common.c contains only code written by me. But common.h is a strange
case: although it originally was named mp_common.h and exists in MPlayer
too, by now it contains only definitions written by uau and me. The
exceptions are the CONTROL_ defines - thus not changing the license of
common.h yet.
codec_tags.c contained once large tables generated from MPlayer's
codecs.conf, but all of these tables were removed.
From demux_playlist.c I'm removing a code fragment from someone who was
not asked; this probably could be done later (see commit 15dccc37).
misc.c is a bit complicated to reason about (it was split off mplayer.c
and thus contains random functions out of this file), but actually all
functions have been added post-MPlayer. Except get_relative_time(),
which was written by uau, but looks similar to 3 different versions of
something similar in each of the Unix/win32/OSX timer source files. I'm
not sure what that means in regards to copyright, so I've just moved it
into another still-GPL source file for now.
screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but
they're all gone.
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