Various nullability fixes everywhere and hide enum->string functions

Gir_Gst.toml

@@ -36,9 +36,6 @@ generate = [
     "Gst.URIError",
     "Gst.StructureChangeType",
     "Gst.StreamStatusType",
-    "Gst.DeviceProvider",
-    "Gst.Device",
-    "Gst.DeviceMonitor",
     "Gst.StreamType",
     "Gst.StreamFlags",
     "Gst.ProgressType",
@@ -343,6 +340,16 @@ status = "generate"
     # formatted value
     ignore = true
 
+    [[object.function]]
+    name = "state_change_return_get_name"
+    # Wrong place
+    ignore = true
+
+    [[object.function]]
+    name = "state_get_name"
+    # Wrong place
+    ignore = true
+
 [[object]]
 name = "Gst.ElementFactory"
 status = "generate"
@@ -353,6 +360,35 @@ name = "Gst.DeviceProviderFactory"
 status = "generate"
 trait = false
 
+[[object]]
+name = "Gst.DeviceProvider"
+status = "generate"
+    [[object.function]]
+    name = "get_bus"
+        [object.function.return]
+        nullable = false
+
+[[object]]
+name = "Gst.DeviceMonitor"
+status = "generate"
+    [[object.function]]
+    name = "get_bus"
+        [object.function.return]
+        nullable = false
+
+[[object]]
+name = "Gst.Device"
+status = "generate"
+    [[object.function]]
+    name = "get_display_name"
+        [object.function.return]
+        nullable = false
+
+    [[object.function]]
+    name = "get_device_class"
+        [object.function.return]
+        nullable = false
+
 [[object]]
 name = "Gst.Object"
 # For renaming the trait...
@@ -526,6 +562,11 @@ status = "generate"
     # formatted value
     ignore = true
 
+    [[object.function]]
+    name = "link_get_name"
+    # Wrong place
+    ignore = true
+
 [[object]]
 name = "Gst.PadTemplate"
 status = "generate"
@@ -635,11 +676,6 @@ trait = false
         [object.function.return]
         nullable = false
 
-    [[object.function]]
-    name = "get_release_date_string"
-        [object.function.return]
-        nullable = false
-
     [[object.function]]
     name = "get_source"
         [object.function.return]
@@ -873,6 +909,16 @@ status = "generate"
     # newtype wrapper
     ignore = true
 
+    [[object.function]]
+    name = "debug_bin_to_dot_data"
+        [object.function.return]
+        nullable = false
+
+    [[object.function]]
+    name = "version_string"
+        [object.function.return]
+        nullable = false
+
 [[object]]
 name = "Gst.StateChangeReturn"
 status = "generate"

gstreamer/src/auto/device.rs

@@ -37,9 +37,9 @@ pub trait DeviceExt {
 
     fn get_caps(&self) -> Option<Caps>;
 
-    fn get_device_class(&self) -> Option<String>;
+    fn get_device_class(&self) -> String;
 
-    fn get_display_name(&self) -> Option<String>;
+    fn get_display_name(&self) -> String;
 
     fn get_properties(&self) -> Option<Structure>;
 
@@ -83,13 +83,13 @@ impl<O: IsA<Device> + IsA<glib::object::Object>> DeviceExt for O {
         }
     }
 
-    fn get_device_class(&self) -> Option<String> {
+    fn get_device_class(&self) -> String {
         unsafe {
             from_glib_full(ffi::gst_device_get_device_class(self.to_glib_none().0))
         }
     }
 
-    fn get_display_name(&self) -> Option<String> {
+    fn get_display_name(&self) -> String {
         unsafe {
             from_glib_full(ffi::gst_device_get_display_name(self.to_glib_none().0))
         }

gstreamer/src/auto/device_monitor.rs

@@ -50,7 +50,7 @@ unsafe impl Sync for DeviceMonitor {}
 pub trait DeviceMonitorExt {
     fn add_filter<'a, 'b, P: Into<Option<&'a str>>, Q: Into<Option<&'b Caps>>>(&self, classes: P, caps: Q) -> u32;
 
-    fn get_bus(&self) -> Option<Bus>;
+    fn get_bus(&self) -> Bus;
 
     fn get_devices(&self) -> Vec<Device>;
 
@@ -84,7 +84,7 @@ impl<O: IsA<DeviceMonitor> + IsA<glib::object::Object>> DeviceMonitorExt for O {
         }
     }
 
-    fn get_bus(&self) -> Option<Bus> {
+    fn get_bus(&self) -> Bus {
         unsafe {
             from_glib_full(ffi::gst_device_monitor_get_bus(self.to_glib_none().0))
         }

gstreamer/src/auto/device_provider.rs

@@ -50,7 +50,7 @@ pub trait DeviceProviderExt {
 
     fn device_remove(&self, device: &Device);
 
-    fn get_bus(&self) -> Option<Bus>;
+    fn get_bus(&self) -> Bus;
 
     fn get_devices(&self) -> Vec<Device>;
 
@@ -90,7 +90,7 @@ impl<O: IsA<DeviceProvider> + IsA<glib::object::Object>> DeviceProviderExt for O
         }
     }
 
-    fn get_bus(&self) -> Option<Bus> {
+    fn get_bus(&self) -> Bus {
         unsafe {
             from_glib_full(ffi::gst_device_provider_get_bus(self.to_glib_none().0))
         }

gstreamer/src/auto/element.rs

@@ -60,20 +60,6 @@ impl Element {
             from_glib(ffi::gst_element_register(plugin.0, name.to_glib_none().0, rank, type_.to_glib()))
         }
     }
-
-    pub fn state_change_return_get_name(state_ret: StateChangeReturn) -> Option<String> {
-        assert_initialized_main_thread!();
-        unsafe {
-            from_glib_none(ffi::gst_element_state_change_return_get_name(state_ret.to_glib()))
-        }
-    }
-
-    pub fn state_get_name(state: State) -> Option<String> {
-        assert_initialized_main_thread!();
-        unsafe {
-            from_glib_none(ffi::gst_element_state_get_name(state.to_glib()))
-        }
-    }
 }
 
 unsafe impl Send for Element {}

gstreamer/src/auto/functions.rs

@@ -18,7 +18,7 @@ use std::mem;
 use std::ptr;
 
 
-pub fn debug_bin_to_dot_data<P: IsA<Bin>>(bin: &P, details: DebugGraphDetails) -> Option<String> {
+pub fn debug_bin_to_dot_data<P: IsA<Bin>>(bin: &P, details: DebugGraphDetails) -> String {
     skip_assert_initialized!();
     unsafe {
         from_glib_full(ffi::gst_debug_bin_to_dot_data(bin.to_glib_none().0, details.to_glib()))
@@ -170,7 +170,7 @@ pub fn version() -> (u32, u32, u32, u32) {
     }
 }
 
-pub fn version_string() -> Option<String> {
+pub fn version_string() -> String {
     assert_initialized_main_thread!();
     unsafe {
         from_glib_full(ffi::gst_version_string())

gstreamer/src/auto/pad.rs

@@ -58,13 +58,6 @@ impl Pad {
             from_glib_none(ffi::gst_pad_new_from_template(templ.to_glib_none().0, name.0))
         }
     }
-
-    pub fn link_get_name(ret: PadLinkReturn) -> Option<String> {
-        assert_initialized_main_thread!();
-        unsafe {
-            from_glib_none(ffi::gst_pad_link_get_name(ret.to_glib()))
-        }
-    }
 }
 
 unsafe impl Send for Pad {}

gstreamer/src/auto/plugin.rs

@@ -69,7 +69,7 @@ impl Plugin {
         }
     }
 
-    pub fn get_release_date_string(&self) -> String {
+    pub fn get_release_date_string(&self) -> Option<String> {
         unsafe {
             from_glib_none(ffi::gst_plugin_get_release_date_string(self.to_glib_none().0))
         }