Update PureSpice so microphone delivery cannot hold audio backend
shutdown behind a busy socket. Record packets now use a bounded
nonblocking write with framing-safe failure handling.
Rework audio provider and backend lifecycles so playback and capture
callbacks quiesce without blocking real-time threads. Move activation,
teardown, controls, retries, and diagnostics onto bounded workers.
Harden USB audio cadence, feedback, and capture recovery.
Preserve source clocks through recording and pace packets from the
device clock. Bound queues, waits, conversion buffers, and packet sizes.
Make PipeWire and PulseAudio stream control thread-safe and recoverable.
Correct latency clock domains, coalesce rate updates, preserve recent
capture under overload, and keep logging outside real-time callbacks.
Add a composite UAC2 microphone function with its own clock so
recording and playback can use independent sample rates.
Packetize asynchronous capture through usbredir, follow the host
capture clock, and preserve the newest frames across stalls.
Reconfigure active recording without another permission prompt and
fix lost PipeWire capture wakeups.
Treat a negative provider-controlled playback ring as a timeline
discontinuity rather than carrying its underrun debt.
Rebase to the normal low-water target and reset feedback correction so
guest stalls resume at low latency instead of discarding audio for
seconds.
Sample the playback ring graph at its original 40 Hz rate so its
1,200 entries continue to represent 30 seconds of history.
Keep packet processing and asynchronous USB feedback at full rate.
Advertise an asynchronous UAC2 OUT endpoint with explicit feedback so
Windows paces USB audio from the host playback clock.
Drive feedback from measured backend consumption plus the existing
buffer phase controller. Preserve the local and backend resampler paths
for providers without active feedback.
Keep audio diagnostics in the correct clock domains, report ring and
backend latency separately, and avoid hot-path feedback wakeups.
We can not support 32-bit because Windows is buggy:
The exact Windows 11 mmsys.cpl from build 26100.8737 populates Speaker
Setup testing against hard-coded speaker masks and for each calls
IKsFormatSupport::IsFormatSupported() using 24 hard-coded PCM formats.
These formats do not include 32-bit in 32-bit, consequently, every one
of the wizard’s format probes fails and it inserts zero channel-list
entries.
It does however test for 24-bit in 32-bit which passes, however this
exposes another breakage due to an inconsistency inside Windows
usbaudio2.sys
For bSubslotSize = 4, bBitResolution = 24, Windows does this:
1. It publishes a KS range whose minimum and maximum bit depths are both
taken from bBitResolution, so the range says 24-bit.
2. It correctly constructs the actual stream format as:
wBitsPerSample = 32, wValidBitsPerSample = 24
3. KS range intersection rejects that 24-in-32 format because its
container is 32 bits while the published range says 24.
4. A packed 24-bit candidate passes range intersection, but the
subsequent exact stream check rejects it because it uses a three-byte
container while USB advertises four bytes.
Therefore no format can pass both checks. That exactly explains:
* USB Device Tree Viewer seeing 24-bit device ranges.
* The MMDevice endpoint exposing no usable formats.
* Windows being unable to start playback.
I verified this in the exact Windows 10.0.26100.8737 driver:
* KSPin::AddDataRange stores bBitResolution into both KS bit-depth
bounds.
* MiniportWave::DataRangeIntersection tests those bounds.
* WaveFormatInfo::IsMatchingStreamFormat separately compares both the
container width and valid-bit count.
Add an opt-in USB audio fallback and connect the emulator to an
available PureSpice USBREDIR channel.
Keep transport-provided audio in priority and serialize USB parser
processing and teardown on the PureSpice thread.
Add a fixed-format USB Audio Class 2 playback device for the
client-side USB redirection bridge.
Advertise stereo 48 kHz IEEE float audio and handle enumeration,
configuration, alternate settings, clock requests, and isochronous data.
Add a serialized bridge between PureSpice USB redirection channels and
libusbredirparser.
Claim one channel and stream borrowed fragments directly through the
parser without packet allocations. Provide an atomic device plug request
for later audio integration.
Route clipboard exchange through a provider interface. Connected
transports take priority while SPICE remains the fallback.
Track asynchronous X11 and Wayland transfers by request, preserving
clipboard ownership across provider changes.
Use PureSpice clipboard status notifications for capability and
lifecycle updates.
Route audio through a provider interface. Connected transports take
priority while SPICE remains the fallback.
Carry explicit sample formats, rates, channel layouts, and source clocks
through playback and recording. Add optional presentation clock feedback
for active synchronization.
Initialize the previous ImGui frame timestamp before rendering
overlays. Without this, the first DeltaTime equals host uptime.
Recent ImGui versions track background and foreground draw-list
activity using float time. At long host uptimes its precision can span
multiple display frames, preventing those lists from being reset and
submitting translucent overlay commands more than once.
Remove confinement handshake expectations now that Wayland advertises
functional warp support. Verify immediate viewport transitions and cursor
alignment when capture is released.
Previously, we only aligned the mouse in the client when the cursor is
visible. This wasn't a problem because the cursor position in the guest
took precedence and we only used relative input.
Since we now have absolute input, the absolute position of the cursor in
the client matters at all times when we exit capture, so we always call
`core_alignToGuest` now.
We don't need any of that weird grabPointer stuff now that we have absolute
input. Deleting this will allow Wayland to advertise warp support without
doing any of the nasty confining stuff on grab/release.
Remove the persistent confined-pointer workaround that emulated cursor
warping on Wayland. Normal pointer motion now uses absolute input only.
Create relative and locked pointer objects only during capture. Preserve
the request across pointer capability changes, and suppress relative
events until the compositor confirms the lock.
On uncapture, publish the current absolute position instead of trying to
warp the host cursor.
Map the remaining Linux mouse buttons through Wayland and evdev.
Use one X11 translation for cooked and raw press and release events.
Ignore unsupported horizontal scrolling and extended SPICE buttons.
Use the LGMP input queue when the host advertises transport input,
while preserving SPICE fallback through the existing input abstraction.
Claim input lazily, publish ordered full-state keyboard and mouse
reports without blocking rendering, and keep the owner lease alive.
Reserve queue capacity for discrete transitions, coalesce only motion
under pressure, and release ownership safely during idle and disconnect.
Keep the Linux-to-HID map in the client and update LGMP to the
nonblocking data-send API required by the input worker.
Expose a Consumer Control HID report for the system volume usages that
Windows does not handle through the Keyboard/Keypad usage page.
Translate the existing mute and volume keyboard usages at the LGInput
boundary, preserve normal keyboard state, and force a neutral consumer
report across resets and HID device reactivation.
Move named pipe writes off the LGMP input worker so a stalled LGInput
endpoint cannot block queue draining or lease maintenance.
Coalesce motion only under queue pressure while preserving mode, button,
wheel, and keyboard transitions. Reset HID state after discontinuities
and carry all 32 mouse button bits through the pipe and HID reports.
Add an optional input transport and a dedicated LGMP receiver that
validates source ownership, generations, ordered sequences, and leases.
Poll input outside the 10 ms control timer. Forward mouse and keyboard
state through the LGInput pipe, and neutralize the endpoint before
ownership changes or transport failures can leave input held.
Reserve a dedicated LGMP queue for low-latency input reports and
endpoint status. Bump KVMFR for the new feature and define ordered
ownership messages with full-state mouse and keyboard payloads.
Use a 32-bit physical button mask so future HID buttons do not require
another wire format change.
Introduce LG_InputOps and route keyboard and mouse input through the
active video transport when it provides an input backend.
Keep SPICE as the fallback and force it while the SPICE display is
active. Add atomic shared/exclusive locking for safe backend changes.
Replace raw HID report forwarding with typed absolute mouse, relative
mouse, and keyboard messages.
Expose absolute and relative modes as separate Mouse collections because
Windows MouHID requires one X/Y motion mode per mouse device.
Move the reusable named-pipe endpoint and shared support code into
the LGCommon static library.
Run a dedicated server in LGIdd and a reconnecting client in
LGInput, with device-lifecycle handling and report framing.
Refactor the helper pipe to use the same endpoint implementation.
Build LGInput as an independent UMDF driver with its own entry point,
service, tracing, and binary.
Expose absolute pointer, relative mouse, and keyboard collections with a
guarded report queue.
Keep LGIdd as the startup and deployment project. Give it a non-linking
build/package dependency on LGInput so F5 stages both driver stacks and
installs them together through LGIddInstall, while the two UMDF binaries
remain independent for future IPC.
Stage both DLLs for the NSIS installer, retain the WDK UMDF remote-debug
startup attachment, and move CSRWLock into LGCommon for the input
driver's report queue.
Run CTest directly in every client matrix job so each build is tested
without waiting for the full matrix to complete.
Install the Mesa runtime in the build job, preserve failure artifacts,
and remove the archive transfer and duplicate test job.
Hide the startup splash immediately after overlay initialization when a
render-pipeline capture is requested. This occurs before the frame
thread is released, so no EGL surface buffer can contain splash pixels.
Add a configurable stride to the synthetic transport and poison row
padding so incorrect row addressing is visible in captured output.
Cover full-frame and moving-damage BGRA uploads with 512-byte and
5120-byte pitches, and verify the advertised layout in the log.
Use an explicit placed buffer for software frame copies so the D3D copy
uses the same row pitch published through KVMFR.
GetCopyableFootprints describes buffer copies and cannot be used to infer
the physical layout of a placed row-major texture. This caused padded
resolutions to use the wrong row starts in every consumer.
Keep the copy direct to IVSHMEM without a staging or CPU copy.
Move cadence and pipeline declarations under capture, and move local
named-pipe handling under ipc.
Flatten display contexts and rename files after their contained classes.
Keep transport headers limited to transport contracts and capabilities.
Consolidate CSwapChainProcessor definitions so each source file matches
the class it implements.
Introduce transport, frame, and control interfaces with an LGMP factory
backend.
Move LGMP and IVSHMEM implementation details under transport/lgmp and
expose direct frame-buffer memory through a neutral capability.
Group the IDD sources and Visual Studio filters by subsystem.
Split the device and swap-chain implementations into focused units,
rename the context classes, and reduce header coupling.
Move cadence-aware hardware capture and immediate software capture
behind a common frame processor interface.
Keep shared damage tracking and frame-buffer ownership in the base
processor, and move stateless format, resource, and rectangle helpers
into CFrameProcessorUtil.
Decouple frame-buffer resources from CSwapChainProcessor by passing the
device dependencies they use directly.
Bypass cadence retention when the software render adapter is active.
Publish each available source frame immediately with one damage-aware
D3D copy into its final IVSHMEM resource.
Keep only one software copy in flight so newer frames are dropped
instead of queued behind stale work. Retain accumulated damage for the
next frame and skip static re-encodes when no image update is pending.
Use a row-major IVSHMEM texture when the shared heap supports it and
fall back to a direct IVSHMEM buffer copy otherwise. In indirect mode,
copy only damaged rows from readback memory into IVSHMEM.
