Gaggery Tsai
5644881bcb
When the last camera reader disconnects, cycle the output pipeline (v4l2sink) through READY → PLAYING to reset v4l2loopback's format state. Without this, switching between camera apps that use different PipeWire paths (e.g. Chromium → GNOME Snapshot) fails with "no more input formats" because v4l2loopback retains stale format state from the previous session. The reset is guarded by an input_was_active flag so it only triggers after an actual streaming session, not during PipeWire's brief device probes on startup. Tested on Dell XPS 16 (Panther Lake) with PipeWire 1.6.2: - Snapshot → Zoom → Snapshot: working - Suspend → resume → Snapshot: working - Boot → first Snapshot: 30fps
50 lines
1.3 KiB
Bash
50 lines
1.3 KiB
Bash
# Maintainer: Ayla Ounce <ayla@ounce.email>
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pkgname=v4l2-relayd
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pkgver=0.2.0
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pkgrel=2
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pkgdesc="Plays gstreamer sources into v4l2loopback devices."
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arch=('x86_64')
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url="https://gitlab.com/vicamo/v4l2-relayd"
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license=('GPL')
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depends=(
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'glib2'
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'gstreamer'
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'gst-plugins-base-libs'
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'gst-plugins-good'
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'v4l2loopback-dkms'
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)
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makedepends=('git')
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source=("https://gitlab.com/vicamo/v4l2-relayd/-/archive/upstream/${pkgver}/v4l2-relayd-upstream-${pkgver}.tar.gz"
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"0001-reset-output-on-idle.patch")
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sha256sums=('0c063edf18dcc6edcdef46e695128cfc2b2d60964ea8538c7e79a2454310c53d'
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'SKIP')
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prepare() {
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cd "$srcdir/${pkgname}-upstream-${pkgver}"
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patch -p0 < "$srcdir/0001-reset-output-on-idle.patch"
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}
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build() {
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cd "$srcdir/${pkgname}-upstream-${pkgver}"
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./autogen.sh
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./configure --prefix=/usr --sysconfdir=/etc
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make
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}
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check() {
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cd "$srcdir/${pkgname}-upstream-${pkgver}"
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make -k check
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}
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package() {
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cd "$srcdir/${pkgname}-upstream-${pkgver}"
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make DESTDIR="$pkgdir/" install
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# The module supports configuring multiple loopback devices; since we
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# don't know whether the user might be using some for other purposes,
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# we should not override its options unilaterally.
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rm "$pkgdir/etc/modprobe.d/v4l2-relayd.conf"
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rmdir "$pkgdir/etc/modprobe.d/"
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}
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