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spa: v4l2: get the device number of the v4l2 device

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This value can be used in filtering the camera devices in consultation with
libcamera
This commit is contained in:
Ashok Sidipotu 2023-06-06 17:53:17 +05:30 • committed by Wim Taymans
parent 79518d13ae
commit 6cd29aed05
2 changed files with 10 additions and 3 deletions
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5
spa/plugins/v4l2/v4l2-udev.c
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@ -220,8 +220,9 @@ static int emit_object_info(struct impl *this, struct device *device)
uint32_t id = device->id;
struct udev_device *dev = device->dev;
const char *str;
struct spa_dict_item items[20];
struct spa_dict_item items[21];
uint32_t n_items = 0;
char devnum[32];
info = SPA_DEVICE_OBJECT_INFO_INIT();
@ -236,6 +237,8 @@ static int emit_object_info(struct impl *this, struct device *device)
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_MEDIA_CLASS, "Video/Device");
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_API_V4L2_PATH, udev_device_get_devnode(dev));
snprintf(devnum, sizeof(devnum), "%" PRId64, (int64_t)udev_device_get_devnum(dev));
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_DEVIDS, devnum);
if ((str = udev_device_get_property_value(dev, "USEC_INITIALIZED")) && *str)
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_PLUGGED_USEC, str);