mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-10-31 22:25:38 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

spa: alsa,v4l2: avoid double access check on inotify events

Browse source 
Previously both `impl_on_notify_events()` and `process_{device,card}()`
called `check_access()`. Avoid that by merging `ACTION_ADD` and
`ACTION_DISABLE` into a single `ACTION_CHANGE` and let `process_{device,card}()`
call `check_access()` and decide what to do.
This commit is contained in:
Barnabás Pőcze 2024-02-05 23:32:24 +01:00
parent 0158b5dcb6
commit ad975c93ee
2 changed files with 47 additions and 69 deletions
Download patch file Download diff file Expand all files Collapse all files

36
spa/plugins/v4l2/v4l2-udev.c
View file

@ -29,9 +29,8 @@
#define MAX_DEVICES 64
enum action {
ACTION_ADD,
ACTION_CHANGE,
ACTION_REMOVE,
ACTION_DISABLE,
};
struct device {
@ -362,10 +361,14 @@ static bool check_access(struct impl *this, struct device *device)
static void process_device(struct impl *this, enum action action, struct device *device)
{
switch (action) {
case ACTION_ADD:
if (!check_access(this, device))
return;
emit_object_info(this, device);
case ACTION_CHANGE:
check_access(this, device);
if (device->accessible && !device->emitted) {
emit_object_info(this, device);
} else if (!device->accessible && device->emitted) {
device->emitted = false;
spa_device_emit_object_info(&this->hooks, device->id, NULL);
}
break;
case ACTION_REMOVE: {
bool emitted = device->emitted;
@ -377,12 +380,6 @@ static void process_device(struct impl *this, enum action action, struct device
spa_device_emit_object_info(&this->hooks, id, NULL);
break;
}
case ACTION_DISABLE:
if (device->emitted) {
device->emitted = false;
spa_device_emit_object_info(&this->hooks, device->id, NULL);
}
break;
}
}
@ -395,7 +392,7 @@ static void process_udev_device(struct impl *this, enum action action, struct ud
return;
device = find_device(this, id);
if (action == ACTION_ADD && !device)
if (action == ACTION_CHANGE && !device)
device = add_device(this, id, udev_device);
if (!device)
@ -453,13 +450,8 @@ static void impl_on_notify_events(struct spa_source *source)
if (!device)
continue;
if (event->mask & IN_ATTRIB) {
bool access = check_access(this, device);
if (access && !device->emitted)
process_device(this, ACTION_ADD, device);
else if (!access && device->emitted)
process_device(this, ACTION_DISABLE, device);
}
if (event->mask & IN_ATTRIB)
process_device(this, ACTION_CHANGE, device);
if (event->mask & IN_IGNORED)
device->inotify_wd = -1;
@ -510,7 +502,7 @@ static void impl_on_fd_events(struct spa_source *source)
if (spa_streq(action, "add") ||
spa_streq(action, "change")) {
process_udev_device(this, ACTION_ADD, dev);
process_udev_device(this, ACTION_CHANGE, dev);
} else if (spa_streq(action, "remove")) {
process_udev_device(this, ACTION_REMOVE, dev);
}
@ -582,7 +574,7 @@ static int enum_devices(struct impl *this)
if (dev == NULL)
continue;
process_udev_device(this, ACTION_ADD, dev);
process_udev_device(this, ACTION_CHANGE, dev);
udev_device_unref(dev);
}