Commit Graph

109 Commits

Author SHA1 Message Date
Geoffrey McRae
2e515657dd [all] update/add license headers 2023-10-20 15:36:34 +11:00
Geoffrey McRae
e658c2e0a2 [client] x11: change to a more visible "dot" cursor
This change alters the small square dot cursor to a more visible 16x16
cursor for X11. A new option `spice:largeDotCursor` can be set to use an
alternative 32x32 cursor for the vision impaired.
2023-09-13 21:54:31 +10:00
Geoffrey McRae
ad43969c1a [client] egl: add support to map HDR to SDR 2023-04-26 16:26:54 +10:00
Quantum
0dabfdc432 [client] displayservers: add name field 2022-07-13 07:05:07 +10:00
Geoffrey McRae
fba7c80b2f [client] interface: remove needsRender from renderers 2022-05-27 14:38:42 +10:00
Geoffrey McRae
5de175c1f3 [client] all: unify the LG splash screen into an overlay 2022-05-27 02:07:20 +10:00
Geoffrey McRae
8974ae4fb5 [client] add SVG loading support and use icons for status display
This brings nanosvg into the project for SVG loading and rendering.
Unfortunatly we can not at this time use a submodule for this project
until https://github.com/memononen/nanosvg/pull/214 is merged.
2022-05-26 04:11:31 +10:00
Geoffrey McRae
247e867f18 [client] egl: implemented SPICE display support 2022-05-22 18:19:58 +10:00
Geoffrey McRae
16f39450b5 [client] spice: added initial framework for spice display fallback 2022-05-22 11:45:11 +10:00
Geoffrey McRae
eae559b4c9 [client/obs] update to support downscaled frames coming from the host 2022-05-01 19:51:25 +10:00
Chris Spencer
9908b737b0 [client] audio: make the requested audio device period size configurable
This adds a new `audio:periodSize` option which defaults to 2048 frames.
For PipeWire, this controls the `PIPEWIRE_LATENCY` value. For PulseAudio,
the controls the target buffer length (`tlength`) value.
2022-02-25 20:41:47 +11:00
Tudor Brindus
91d6e3a82a [client] allow building with -Wstrict-prototypes
This is not yet turned on because cimgui does not build with it enabled.
2022-02-25 20:38:44 +11:00
Chris Spencer
0d97a51802 [client] audio: increase startup latency
Underruns can still happen quite easily at the beginning of playback,
particularly at very low latency settings. Further increase the startup
latency to avoid this.
2022-02-10 07:50:01 +11:00
Tudor Brindus
da548e3858 [client] ds: expose activation requesting 2022-02-08 14:54:55 +11:00
Chris Spencer
e1e60fdaa6 [client] audio: tune target latency
The target latency is now based upon the device maximum period size
(which may be configured by setting the `PIPEWIRE_LATENCY` environment
variable if using PipeWire), with some allowance for timing jitter from
Spice and the audio device.

PipeWire can change the period size dynamically at any time which must be
taken into account when selecting the target latency to avoid underruns
when the period size is increased. This is explained in detail within the
commit body.
2022-02-04 16:27:12 +11:00
Geoffrey McRae
a0477466d2 Revert "[client] audio: allow the audiodev to return the periodFrames"
This reverts commit 41884bfcc5.

PipeWire can change it's period size on the fly on us making this
approach invalid.
2022-01-28 10:00:35 +11:00
Geoffrey McRae
41884bfcc5 [client] audio: allow the audiodev to return the periodFrames
This change allows the audiodevs to return the minimum period frames
needed to start playback instead of having to rely on a pull to obtain
these details.

Additionally we are using this information to select an initial start
latency as well as to train the desired latency in order to keep it as
low as possible.
2022-01-27 18:03:11 +11:00
Chris Spencer
dd2d84a080 [client] audio: adjust playback speed to match audio device clock
This change is based on the techniques described in [1] and [2].

The input audio stream from Spice is not synchronised to the audio playback
device. While the input and output may be both nominally running at 48 kHz,
when compared against each other, they will differ by a tiny fraction of a
percent. Given enough time (typically on the order of a few hours), this
will result in the ring buffer becoming completely full or completely
empty. It will stay in this state permanently, periodically resulting in
glitches as the buffer repeatedly underruns or overruns.

To address this, adjust the speed of the received data to match the rate at
which it is being consumed by the audio device. This will result in a
slight pitch shift, but the changes should be small and smooth enough that
this is unnoticeable to the user.

The process works roughly as follows:
1. Every time audio data is received from Spice, or consumed by the audio
   device, sample the current time. These are fed into a pair of delay
   locked loops to produce smoothed approximations of the two clocks.
2. Compute the difference between the two clocks and compare this against
   the target latency to produce an error value. This error value will be
   quite stable during normal operation, but can change quite rapidly due
   to external factors, particularly at the start of playback. To smooth
   out any sudden changes in playback speed, which would be noticeable to
   the user, this value is also filtered through another delay locked loop.
3. Feed this error value into a PI controller to produce a ratio value.
   This is the target playback speed in order to bring the error value
   towards zero.
4. Resample the input audio using the computed ratio to apply the speed
   change. The output of the resampler is what is ultimately inserted into
   the ring buffer for consumption by the audio device.

Since this process targets a specific latency value, rather than simply
trying to rate match the input and output, it also has the effect of
'correcting' latency issues. If a high latency application (such as a media
player) is already running, the time between requesting the start of
playback and the audio device actually starting to consume samples can be
very high, easily in the hundreds of milliseconds. The changes here will
automatically adjust the playback speed over the course of a few minutes to
bring the latency back down to the target value.

[1] https://kokkinizita.linuxaudio.org/papers/adapt-resamp.pdf
[2] https://kokkinizita.linuxaudio.org/papers/usingdll.pdf
2022-01-27 18:03:11 +11:00
Geoffrey McRae
15f76339c8 [client] audio: move the memory copy into the pull function 2022-01-19 10:29:49 +11:00
Geoffrey McRae
04ae9217e8 [client] audio: allow the audiodev to determine the start fill level 2022-01-19 01:52:19 +11:00
Geoffrey McRae
b334f22223 [client] audio: rework audiodevs to be pull model from a common buffer 2022-01-18 09:02:44 +11:00
Geoffrey McRae
689cc53255 [client] audio: add audio playback latency interface and graph 2022-01-17 22:13:41 +11:00
Geoffrey McRae
780cf5f362 [client] overlay: add modal message dialog support 2022-01-08 18:58:48 +11:00
Geoffrey McRae
db2e38ae4d [client] overlay: add 25Hz tick function
This allows an overlay to manage itself for timed events like
alerts/messages, etc.
2022-01-08 14:33:07 +11:00
Geoffrey McRae
fe7973ea24 [client] audio: implement record interface and glue 2022-01-06 23:49:20 +11:00
Geoffrey McRae
e6bd36ec7c [client] audio: refactor audio to playback and add record funcs 2022-01-06 22:47:22 +11:00
Geoffrey McRae
952ebea2c5 [all] refresh copyright dates 2022-01-05 19:42:46 +11:00
Geoffrey McRae
433a5420cb [client] audio: update PureSpice and add support for volume control/mute 2021-12-26 11:09:42 +11:00
Geoffrey McRae
e810577317 [client] audio: initial addition of PipeWire audio support via SPICE 2021-12-26 11:09:42 +11:00
Geoffrey McRae
d69069fb09 [client] egl: keep the mouse cursor 1:1 when downscaling
This keeps the cursor a usable size when the guest is running a high
resolution and downscaling (ie, 4K -> FHD).
2021-12-26 11:08:42 +11:00
Quantum
579f998519 [client] all: replace assert with DEBUG_ASSERT 2021-08-14 12:19:07 +10:00
Geoffrey McRae
30ed563504 [client] interface: refactor to use camlCase function names 2021-08-08 15:43:42 +10:00
Geoffrey McRae
f8ae291090 [client] interface: switch to using UPCAST for the renderer's data 2021-08-08 15:32:01 +10:00
Geoffrey McRae
45d1f27fb4 [client] interface: rename LG_Renderer to LG_RendererOps
Part of the standardisation of using the `Ops` suffix for all interfaces
2021-08-08 14:43:04 +10:00
Geoffrey McRae
1a8267d55a [client] interface: cleanup the renderer interface
Removes the silly typedefs and adds some basic documentation as to the
usage of each function.
2021-08-08 14:39:40 +10:00
Geoffrey McRae
162b1b93db [client] main: don't include the swap into the render timings
If vsync is enabled the swap will block until vblank skewing the timing
metrics.
2021-08-07 01:45:42 +10:00
Geoffrey McRae
6c84c0eca6 [client] overlay: move keybinds and config into the overlays
This adds a new `earlyInit` call which allows the overlay to register
options before actually being intialized. Also the keybind handling and
state tracking for each overlay has been moved internal to the overlay
itself.
2021-08-05 06:40:06 +10:00
Quantum
51b9cd4e5a [all] copyright: use unicode copyright sign ©
This is done for consistency with the license strings in appstrings.c.
2021-08-04 21:16:35 +10:00
Geoffrey McRae
c15d0dc672 [client] ds: waitFrame now returns a bool to force rendering if needed
X11 needs to calibrate to get the best possible latency, as such it
needs the scene to render so that the render time of the scene can be
accounted for in the delay calculation.
2021-08-04 06:49:35 +10:00
Geoffrey McRae
4e435e6199 [client] ds: tell the display server if jitRender is requested 2021-08-04 06:05:42 +10:00
Geoffrey McRae
13d9c84dc9 [client] egl: replace monolithic EGLTexture with modular version
The way things were handled in EGLTexture is not only very hard to
follow, but broken. This change set breaks up EGLTexture into a modular
design making it easier to implement the various versions.

Note that DMABUF is currently broken and needs to be re-implemented.
2021-08-02 23:37:33 +10:00
Geoffrey McRae
e23144aecd [client] overlay: add new needs_render for realtime overlays 2021-08-01 21:13:59 +10:00
Quantum
f64310320a [client] ds: add stopWaitFrame to terminate waitFrame early
This is used on exit to unblock the render thread.
2021-08-01 19:54:28 +10:00
Quantum
16aa04d539 [client] ds: add skipFrame method to interface
If this exists, it should be called when waitFrame returns but we don't
wish to render.
2021-08-01 18:54:55 +10:00
Geoffrey McRae
f8e1ab8f31 [client] renderers: add new needs_render method to the interface
With jitRender the renderer needs to tell the main application if it
needs to be rendererd, such as during the initial splash screen fade
out.
2021-08-01 18:18:08 +10:00
Quantum
77b3d45e0e [client] ds: change signalNextFrame to waitFrame 2021-08-01 17:29:15 +10:00
Geoffrey McRae
41c5688fca [client] overlay: let the overlay know if it's in interactive mode
This also removes the need for the flags member as the overlay can just
opt to not render if it's not in interactive mode.
2021-07-31 19:11:40 +10:00
Quantum
3043296e52 [client] ds: add optional method signalNextFrame(LGEvent)
This method takes an LGEvent and signals it when the next frame should be
rendered in time for the next vblank.

We will be using this to render imgui at screen refresh rate, but this could
potentially be used later to implement a better form of vsync for supported
display servers.

This must be invoked before swapping buffers.
2021-07-31 19:05:21 +10:00
Quantum
da28db2ca4 [client] ds: change showPointer to setPointer for more cursors
Currently everything only supports LG_POINTER_NONE and LG_POINTER_SQUARE.
2021-07-31 14:56:04 +10:00
Geoffrey McRae
60a58d4d8d [client] all: make it possible to signal full window invalidation
Now that we are drawing with damage rects, when the window is hidden and
then exposed the window may not get fully redrawn. This provides
`app_invalidateWindow` for the display server backend to call when the
screen needs a full redraw.
2021-07-25 15:29:29 +10:00