The picker gated its list on visible-window processes plus audio sessions
on only the default render device. That both showed non-audio apps (any
window) and missed real ones (windowless or routed to a secondary device).
Process loopback targets a PID and its child tree regardless of whether the
app is currently playing, so the gate fought the capture layer.
Now enumerate every process in the user's interactive session (windowed or
not), deduped by executable with the windowed tree-root as the capture PID;
scan all active render endpoints to flag currently-playing apps with a > and
sort them first. Adds a filter box and persists checks across filtering.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
"All apps except selected" previously captured the complement of a frozen
app snapshot in INCLUDE mode (missed late-launched apps and system sounds,
wasted captures on silent windows). It now opens a single ProcessLoopbackCapture
in EXCLUDE mode (AUDIOCLIENT_PROCESS_LOOPBACK_MODE_EXCLUDE_TARGET_PROCESS_TREE)
of the one chosen app — true system-mix-minus-one, dynamic so apps launched
after sharing starts are included. The picker enforces single-selection in
exclude mode (the activation params take one target PID).
Adds an "Exclude VoiceCat's own audio (prevents echo)" checkbox (default on,
entire-desktop only) that routes the desktop capture through the same EXCLUDE
path targeting our own process id, killing the whole-device self-echo loop.
No C++/ABI changes. Updates voice.md and PROGRESS.md.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Adds "only selected apps" and "all apps except selected" screen-audio
modes to the Windows client, alongside the existing entire-desktop path.
Per-app capture uses WASAPI process loopback (AUDCLNT_ACTIVATIONTYPE_
PROCESS_LOOPBACK) via ProcessLoopbackCapture, mixed by ProcessAudioMixer
and fed to the core through vc_stream_feed_pcm (external_feed=1 so the
core skips its own loopback device).
Init must pass AUDCLNT_STREAMFLAGS_LOOPBACK | EVENTCALLBACK |
AUTOCONVERTPCM; the LOOPBACK flag is what makes the virtual endpoint
deliver rendered audio (without it every buffer is flagged SILENT) and
AUTOCONVERTPCM resamples the app's native format to 48k s16.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
