v4l2-relayd

This commit is contained in:
Ryan Hughes committed 2026-05-08 01:04:52 -04:00
1 parent e2989fc47a
commit d108413099
4 files changed
+2

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-17
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@@ -1,17 +0,0 @@
pkgbase = v4l2-relayd
pkgdesc = Plays gstreamer sources into v4l2loopback devices.
pkgver = 0.2.0
pkgrel = 1
url = https://gitlab.com/vicamo/v4l2-relayd
arch = x86_64
license = GPL
makedepends = git
depends = glib2
depends = gstreamer
depends = gst-plugins-base-libs
depends = gst-plugins-good
depends = v4l2loopback-dkms
source = https://gitlab.com/vicamo/v4l2-relayd/-/archive/upstream/0.2.0/v4l2-relayd-upstream-0.2.0.tar.gz
sha256sums = 0c063edf18dcc6edcdef46e695128cfc2b2d60964ea8538c7e79a2454310c53d
pkgname = v4l2-relayd
-4
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@@ -1,4 +0,0 @@
pkg
src
*.pkg.tar.zst
*.tar.gz
@@ -1,37 +0,0 @@
--- src/v4l2-relayd.c.orig 2026-03-30 09:59:14.804751921 -0700
+++ src/v4l2-relayd.c 2026-03-30 09:59:14.827617699 -0700
@@ -58,6 +58,7 @@
static GstElement *input_pipeline = NULL;
static GstElement *output_pipeline = NULL;
static GstElement *splash_pipeline = NULL;
+static GTimer *input_timer = NULL;
static gboolean backend_pipeline_bus_call (GstBus *bus,
GstMessage *msg,
@@ -278,6 +279,10 @@
{
gst_element_set_state (splash_pipeline_get (), GST_STATE_NULL);
gst_element_set_state (input_pipeline_get (), GST_STATE_PLAYING);
+ if (input_timer == NULL)
+ input_timer = g_timer_new ();
+ else
+ g_timer_start (input_timer);
}
static void
@@ -285,6 +290,15 @@
{
if (input_pipeline != NULL)
gst_element_set_state (input_pipeline, GST_STATE_NULL);
+ /* After a real streaming session (>3s), reset the output pipeline
+ * to clear stale v4l2loopback state that causes format negotiation
+ * failures when switching between camera apps. Brief probes from
+ * PipeWire/WirePlumber (<1s) are skipped. */
+ if (input_timer != NULL && g_timer_elapsed (input_timer, NULL) > 3.0
+ && output_pipeline != NULL) {
+ gst_element_set_state (output_pipeline, GST_STATE_READY);
+ gst_element_set_state (output_pipeline, GST_STATE_PLAYING);
+ }
if (input_pipeline != NULL)
gst_element_set_state (splash_pipeline, GST_STATE_PLAYING);
}
-49
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@@ -1,49 +0,0 @@
# Maintainer: Ayla Ounce <ayla@ounce.email>
pkgname=v4l2-relayd
pkgver=0.2.0
pkgrel=2
pkgdesc="Plays gstreamer sources into v4l2loopback devices."
arch=('x86_64')
url="https://gitlab.com/vicamo/v4l2-relayd"
license=('GPL')
depends=(
'glib2'
'gstreamer'
'gst-plugins-base-libs'
'gst-plugins-good'
'v4l2loopback-dkms'
)
makedepends=('git')
source=("https://gitlab.com/vicamo/v4l2-relayd/-/archive/upstream/${pkgver}/v4l2-relayd-upstream-${pkgver}.tar.gz"
"0001-reset-output-on-idle.patch")
sha256sums=('0c063edf18dcc6edcdef46e695128cfc2b2d60964ea8538c7e79a2454310c53d'
'SKIP')
prepare() {
cd "$srcdir/${pkgname}-upstream-${pkgver}"
patch -p0 <"$srcdir/0001-reset-output-on-idle.patch"
}
build() {
cd "$srcdir/${pkgname}-upstream-${pkgver}"
./autogen.sh
./configure --prefix=/usr --sysconfdir=/etc
make
}
check() {
cd "$srcdir/${pkgname}-upstream-${pkgver}"
make -k check
}
package() {
cd "$srcdir/${pkgname}-upstream-${pkgver}"
make DESTDIR="$pkgdir/" install
# The module supports configuring multiple loopback devices; since we
# don't know whether the user might be using some for other purposes,
# we should not override its options unilaterally.
rm "$pkgdir/etc/modprobe.d/v4l2-relayd.conf"
rmdir "$pkgdir/etc/modprobe.d/"
}