2020-12-15 10:53:31 +00:00
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// Take a look at the license at the top of the repository in the LICENSE file.
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2019-09-11 19:59:49 +00:00
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2020-11-14 15:34:41 +00:00
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use glib::prelude::*;
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2019-09-11 19:59:49 +00:00
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use glib::subclass::prelude::*;
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2020-11-14 15:34:41 +00:00
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use glib::translate::*;
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2019-09-11 19:59:49 +00:00
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2020-11-21 13:46:48 +00:00
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use crate::Device;
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use crate::DeviceProvider;
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use crate::LoggableError;
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2019-09-11 19:59:49 +00:00
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2020-10-20 20:55:20 +00:00
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#[derive(Debug, Clone)]
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pub struct DeviceProviderMetadata {
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long_name: String,
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classification: String,
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description: String,
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author: String,
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additional: Vec<(String, String)>,
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}
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2020-07-25 08:02:04 +00:00
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pub trait DeviceProviderImpl: DeviceProviderImplExt + ObjectImpl + Send + Sync {
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2020-10-20 20:55:20 +00:00
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fn metadata() -> Option<&'static DeviceProviderMetadata> {
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None
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}
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2020-11-14 15:34:41 +00:00
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fn probe(&self, device_provider: &Self::Type) -> Vec<Device> {
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2019-09-11 19:59:49 +00:00
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self.parent_probe(device_provider)
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}
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2020-11-14 15:34:41 +00:00
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fn start(&self, device_provider: &Self::Type) -> Result<(), LoggableError> {
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2019-09-11 19:59:49 +00:00
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self.parent_start(device_provider)
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}
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2020-11-14 15:34:41 +00:00
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fn stop(&self, device_provider: &Self::Type) {
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2019-09-11 19:59:49 +00:00
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self.parent_stop(device_provider)
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}
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}
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2020-11-14 15:34:41 +00:00
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pub trait DeviceProviderImplExt: ObjectSubclass {
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fn parent_probe(&self, device_provider: &Self::Type) -> Vec<Device>;
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2019-09-11 19:59:49 +00:00
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2020-11-14 15:34:41 +00:00
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fn parent_start(&self, device_provider: &Self::Type) -> Result<(), LoggableError>;
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2019-09-11 19:59:49 +00:00
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2020-11-14 15:34:41 +00:00
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fn parent_stop(&self, device_provider: &Self::Type);
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2019-09-11 19:59:49 +00:00
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}
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2020-07-25 08:02:04 +00:00
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impl<T: DeviceProviderImpl> DeviceProviderImplExt for T {
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2020-11-14 15:34:41 +00:00
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fn parent_probe(&self, device_provider: &Self::Type) -> Vec<Device> {
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2019-09-11 19:59:49 +00:00
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unsafe {
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2020-07-25 08:02:04 +00:00
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let data = T::type_data();
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2021-04-11 19:39:50 +00:00
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstDeviceProviderClass;
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2019-09-11 19:59:49 +00:00
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if let Some(f) = (*parent_class).probe {
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2020-11-14 15:34:41 +00:00
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FromGlibPtrContainer::from_glib_full(f(device_provider
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.unsafe_cast_ref::<DeviceProvider>()
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.to_glib_none()
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.0))
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2019-09-11 19:59:49 +00:00
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} else {
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Vec::new()
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}
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}
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}
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2020-11-14 15:34:41 +00:00
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fn parent_start(&self, device_provider: &Self::Type) -> Result<(), LoggableError> {
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2019-09-11 19:59:49 +00:00
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unsafe {
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2020-07-25 08:02:04 +00:00
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let data = T::type_data();
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2021-04-11 19:39:50 +00:00
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstDeviceProviderClass;
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2019-09-11 19:59:49 +00:00
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let f = (*parent_class).start.ok_or_else(|| {
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2020-12-20 15:09:22 +00:00
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loggable_error!(crate::CAT_RUST, "Parent function `start` is not defined")
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2019-09-11 19:59:49 +00:00
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})?;
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2020-12-20 15:09:22 +00:00
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result_from_gboolean!(
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2020-11-14 15:34:41 +00:00
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f(device_provider
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.unsafe_cast_ref::<DeviceProvider>()
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.to_glib_none()
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.0),
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2020-11-21 13:46:48 +00:00
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crate::CAT_RUST,
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2019-09-11 19:59:49 +00:00
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"Failed to start the device provider using the parent function"
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)
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}
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}
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2020-11-14 15:34:41 +00:00
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fn parent_stop(&self, device_provider: &Self::Type) {
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2019-09-11 19:59:49 +00:00
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unsafe {
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2020-07-25 08:02:04 +00:00
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let data = T::type_data();
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2021-04-11 19:39:50 +00:00
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let parent_class = data.as_ref().parent_class() as *mut ffi::GstDeviceProviderClass;
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2019-09-11 19:59:49 +00:00
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if let Some(f) = (*parent_class).stop {
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2020-11-14 15:34:41 +00:00
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f(device_provider
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.unsafe_cast_ref::<DeviceProvider>()
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.to_glib_none()
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.0);
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2019-09-11 19:59:49 +00:00
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}
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}
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}
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}
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2020-11-05 13:18:19 +00:00
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unsafe impl<T: DeviceProviderImpl> IsSubclassable<T> for DeviceProvider {
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2021-03-08 10:06:56 +00:00
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fn class_init(klass: &mut glib::Class<Self>) {
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<glib::Object as IsSubclassable<T>>::class_init(klass);
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2020-11-05 17:07:31 +00:00
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let klass = klass.as_mut();
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klass.probe = Some(device_provider_probe::<T>);
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klass.start = Some(device_provider_start::<T>);
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klass.stop = Some(device_provider_stop::<T>);
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2020-10-20 20:55:20 +00:00
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unsafe {
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if let Some(metadata) = T::metadata() {
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ffi::gst_device_provider_class_set_metadata(
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klass,
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metadata.long_name.to_glib_none().0,
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metadata.classification.to_glib_none().0,
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metadata.description.to_glib_none().0,
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metadata.author.to_glib_none().0,
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);
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for (key, value) in &metadata.additional {
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ffi::gst_device_provider_class_add_metadata(
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klass,
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key.to_glib_none().0,
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value.to_glib_none().0,
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);
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}
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}
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}
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2019-09-11 19:59:49 +00:00
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}
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2021-03-09 11:50:32 +00:00
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fn instance_init(instance: &mut glib::subclass::InitializingObject<T>) {
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<glib::Object as IsSubclassable<T>>::instance_init(instance);
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}
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2019-09-11 19:59:49 +00:00
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}
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2020-07-25 08:02:04 +00:00
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unsafe extern "C" fn device_provider_probe<T: DeviceProviderImpl>(
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2020-11-21 13:46:48 +00:00
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ptr: *mut ffi::GstDeviceProvider,
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) -> *mut glib::ffi::GList {
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2019-09-11 19:59:49 +00:00
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let instance = &*(ptr as *mut T::Instance);
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2021-04-11 19:39:50 +00:00
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let imp = instance.impl_();
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2020-04-05 14:52:56 +00:00
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let wrap: Borrowed<DeviceProvider> = from_glib_borrow(ptr);
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2019-09-11 19:59:49 +00:00
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2020-11-14 15:34:41 +00:00
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imp.probe(wrap.unsafe_cast_ref()).to_glib_full()
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2019-09-11 19:59:49 +00:00
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}
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2020-07-25 08:02:04 +00:00
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unsafe extern "C" fn device_provider_start<T: DeviceProviderImpl>(
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2020-11-21 13:46:48 +00:00
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ptr: *mut ffi::GstDeviceProvider,
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) -> glib::ffi::gboolean {
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2019-09-11 19:59:49 +00:00
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let instance = &*(ptr as *mut T::Instance);
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2021-04-11 19:39:50 +00:00
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let imp = instance.impl_();
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2020-04-05 14:52:56 +00:00
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let wrap: Borrowed<DeviceProvider> = from_glib_borrow(ptr);
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2019-09-11 19:59:49 +00:00
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2020-11-14 15:34:41 +00:00
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match imp.start(wrap.unsafe_cast_ref()) {
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2019-09-11 19:59:49 +00:00
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Ok(()) => true,
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Err(err) => {
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2020-04-05 14:52:56 +00:00
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err.log_with_object(&*wrap);
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2019-09-11 19:59:49 +00:00
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false
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}
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}
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.to_glib()
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}
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2020-11-21 13:46:48 +00:00
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unsafe extern "C" fn device_provider_stop<T: DeviceProviderImpl>(ptr: *mut ffi::GstDeviceProvider) {
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2019-09-11 19:59:49 +00:00
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let instance = &*(ptr as *mut T::Instance);
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2021-04-11 19:39:50 +00:00
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let imp = instance.impl_();
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2020-04-05 14:52:56 +00:00
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let wrap: Borrowed<DeviceProvider> = from_glib_borrow(ptr);
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2019-09-11 19:59:49 +00:00
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2020-11-14 15:34:41 +00:00
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imp.stop(wrap.unsafe_cast_ref());
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2019-09-11 19:59:49 +00:00
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}
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