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device: improve properties and info

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This commit is contained in:
Wim Taymans 2018-11-28 12:21:58 +01:00
parent cff8ce8e99
commit 59d77818d6
2 changed files with 62 additions and 57 deletions
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60
spa/plugins/v4l2/v4l2-device.c
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@ -69,16 +69,43 @@ struct impl {
struct spa_v4l2_device dev;
};
static const struct spa_dict_item info_items[] = {
{ "media.class", "Video/Device" },
};
static int emit_info(struct impl *this)
{
int res;
struct spa_dict_item items[5];
if ((res = spa_v4l2_open(&this->dev, this->props.device)) < 0)
return res;
items[0] = SPA_DICT_ITEM_INIT("device.path", (char *)this->props.device);
items[1] = SPA_DICT_ITEM_INIT("media.class", "Video/Device");
items[2] = SPA_DICT_ITEM_INIT("v4l2.driver", (char *)this->dev.cap.driver);
items[3] = SPA_DICT_ITEM_INIT("v4l2.card", (char *)this->dev.cap.card);
items[4] = SPA_DICT_ITEM_INIT("v4l2.bus", (char *)this->dev.cap.bus_info);
if (this->callbacks->info)
this->callbacks->info(this->callbacks_data, &SPA_DICT_INIT(items, 5));
if (this->callbacks->add) {
if (spa_v4l2_is_capture(&this->dev)) {
this->callbacks->add(this->callbacks_data, 0,
&spa_v4l2_source_factory,
SPA_TYPE_INTERFACE_Node,
&SPA_DICT_INIT(items, 1));
}
}
spa_v4l2_close(&this->dev);
return 0;
}
static int impl_set_callbacks(struct spa_device *device,
const struct spa_device_callbacks *callbacks,
void *data)
{
struct impl *this;
struct spa_dict_item items[1];
int res = 0;
spa_return_val_if_fail(device != NULL, -EINVAL);
@ -88,23 +115,9 @@ static int impl_set_callbacks(struct spa_device *device,
this->callbacks_data = data;
if (callbacks) {
if (callbacks->info)
callbacks->info(data, &SPA_DICT_INIT_ARRAY(info_items));
if (callbacks->add) {
if (spa_v4l2_is_capture(&this->dev)) {
items[0] = SPA_DICT_ITEM_INIT("device.path", this->props.device);
callbacks->add(data, 0,
&spa_v4l2_source_factory,
SPA_TYPE_INTERFACE_Node,
&SPA_DICT_INIT(items, 1));
}
}
res = emit_info(this);
}
return 0;
return res;
}
static int impl_enum_params(struct spa_device *device,
@ -169,7 +182,6 @@ impl_init(const struct spa_handle_factory *factory,
struct impl *this;
uint32_t i;
const char *str;
int res;
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(handle != NULL, -EINVAL);
@ -194,12 +206,8 @@ impl_init(const struct spa_handle_factory *factory,
reset_props(&this->props);
if (info && (str = spa_dict_lookup(info, "device.path"))) {
if (info && (str = spa_dict_lookup(info, "device.path")))
strncpy(this->props.device, str, 63);
if ((res = spa_v4l2_open(&this->dev, this->props.device)) < 0)
return res;
spa_v4l2_close(&this->dev);
}
return 0;
}