Centralize state loading logic

src/wrapper/clap/context.rs

@@ -189,6 +189,6 @@ impl<P: ClapPlugin> GuiContext for WrapperGuiContext<P> {
     }
 
     fn set_state(&self, state: crate::wrapper::state::PluginState) {
-        self.wrapper.set_state_object(state)
+        self.wrapper.set_state_object_from_gui(state)
     }
 }

src/wrapper/clap/wrapper.rs

@@ -1649,7 +1649,7 @@ impl<P: ClapPlugin> Wrapper<P> {
     /// Update the plugin's internal state, called by the plugin itself from the GUI thread. To
     /// prevent corrupting data and changing parameters during processing the actual state is only
     /// updated at the end of the audio processing cycle.
-    pub fn set_state_object(&self, mut state: PluginState) {
+    pub fn set_state_object_from_gui(&self, mut state: PluginState) {
         // Use a loop and timeouts to handle the super rare edge case when this function gets called
         // between a process call and the host disabling the plugin
         loop {
@@ -1682,27 +1682,7 @@ impl<P: ClapPlugin> Wrapper<P> {
             } else {
                 // Otherwise we'll set the state right here and now, since this function should be
                 // called from a GUI thread
-                unsafe {
+                self.set_state_inner(&mut state);
-                    state::deserialize_object::<P>(
-                        &mut state,
-                        self.params.clone(),
-                        state::make_params_getter(&self.param_by_hash, &self.param_id_to_hash),
-                        self.current_buffer_config.load().as_ref(),
-                    );
-                }
-
-                let audio_io_layout = self.current_audio_io_layout.load();
-                if let Some(buffer_config) = self.current_buffer_config.load() {
-                    // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
-                    let mut init_context = self.make_init_context();
-                    let mut plugin = self.plugin.lock();
-                    plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context);
-                    process_wrapper(|| plugin.reset());
-                }
-
-                let task_posted = self.schedule_gui(Task::ParameterValuesChanged);
-                nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
-
                 break;
             }
         }
@@ -1747,6 +1727,68 @@ impl<P: ClapPlugin> Wrapper<P> {
         }
     }
 
+    /// Immediately set the plugin state. Returns `false` if the deserialization failed. The plugin
+    /// state is set from a couple places, so this function aims to deduplicate that. Includes
+    /// `permit_alloc()`s around the deserialization and initialization for the use case where
+    /// `set_state_object_from_gui()` was called while the plugin is process audio.
+    ///
+    /// Implicitly emits `Task::ParameterValuesChanged`.
+    ///
+    /// # Notes
+    ///
+    /// `self.plugin` must _not_ be locked while calling this function or it will deadlock.
+    pub fn set_state_inner(&self, state: &mut PluginState) -> bool {
+        let audio_io_layout = self.current_audio_io_layout.load();
+        let buffer_config = self.current_buffer_config.load();
+
+        // FIXME: This is obviously not realtime-safe, but loading presets without doing this could
+        //        lead to inconsistencies. It's the plugin's responsibility to not perform any
+        //        realtime-unsafe work when the initialize function is called a second time if it
+        //        supports runtime preset loading.  `state::deserialize_object()` normally never
+        //        allocates, but if the plugin has persistent non-parameter data then its
+        //        `deserialize_fields()` implementation may still allocate.
+        let mut success = permit_alloc(|| unsafe {
+            state::deserialize_object::<P>(
+                state,
+                self.params.clone(),
+                state::make_params_getter(&self.param_by_hash, &self.param_id_to_hash),
+                self.current_buffer_config.load().as_ref(),
+            )
+        });
+        if !success {
+            nih_debug_assert_failure!("Deserializing plugin state from a state object failed");
+            return false;
+        }
+
+        // If the plugin was already initialized then it needs to be reinitialized
+        if let Some(buffer_config) = buffer_config {
+            // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
+            let mut init_context = self.make_init_context();
+            let mut plugin = self.plugin.lock();
+
+            // See above
+            success = permit_alloc(|| {
+                plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context)
+            });
+            if success {
+                process_wrapper(|| plugin.reset());
+            }
+        }
+
+        nih_debug_assert!(
+            success,
+            "Plugin returned false when reinitializing after loading state"
+        );
+
+        // Reinitialize the plugin after loading state so it can respond to the new parameter values
+        let task_posted = self.schedule_gui(Task::ParameterValuesChanged);
+        nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
+
+        // TODO: Check for GUI size changes and resize accordingly
+
+        success
+    }
+
     unsafe extern "C" fn init(plugin: *const clap_plugin) -> bool {
         check_null_ptr!(false, plugin, (*plugin).plugin_data);
         let wrapper = &*((*plugin).plugin_data as *const Self);
@@ -2362,39 +2404,7 @@ impl<P: ClapPlugin> Wrapper<P> {
             //        doesn't do that
             let updated_state = permit_alloc(|| wrapper.updated_state_receiver.try_recv());
             if let Ok(mut state) = updated_state {
-                // FIXME: This is obviously not realtime-safe, but loading presets without doing
+                wrapper.set_state_inner(&mut state);
-                //         this could lead to inconsistencies. It's the plugin's responsibility to
-                //         not perform any realtime-unsafe work when the initialize function is
-                //         called a second time if it supports runtime preset loading.
-                //         `state::deserialize_object()` normally never allocates, but if the plugin
-                //         has persistent non-parameter data then its `deserialize_fields()`
-                //         implementation may still allocate.
-                permit_alloc(|| {
-                    state::deserialize_object::<P>(
-                        &mut state,
-                        wrapper.params.clone(),
-                        state::make_params_getter(
-                            &wrapper.param_by_hash,
-                            &wrapper.param_id_to_hash,
-                        ),
-                        wrapper.current_buffer_config.load().as_ref(),
-                    );
-                });
-
-                // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
-                let mut init_context = wrapper.make_init_context();
-                let audio_io_layout = wrapper.current_audio_io_layout.load();
-                let buffer_config = wrapper.current_buffer_config.load().unwrap();
-                let mut plugin = wrapper.plugin.lock();
-                // See above
-                permit_alloc(|| {
-                    plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context)
-                });
-                plugin.reset();
-
-                // Reinitialize the plugin after loading state so it can respond to the new parameter values
-                let task_posted = wrapper.schedule_gui(Task::ParameterValuesChanged);
-                nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
 
                 // We'll pass the state object back to the GUI thread so deallocation can happen
                 // there without potentially blocking the audio thread
@@ -3243,35 +3253,17 @@ impl<P: ClapPlugin> Wrapper<P> {
         }
         read_buffer.set_len(length as usize);
 
-        let success = state::deserialize_json::<P>(
+        match state::deserialize_json(&read_buffer) {
-            &read_buffer,
+            Some(mut state) => {
-            wrapper.params.clone(),
+                let success = wrapper.set_state_inner(&mut state);
-            state::make_params_getter(&wrapper.param_by_hash, &wrapper.param_id_to_hash),
+                if success {
-            wrapper.current_buffer_config.load().as_ref(),
+                    nih_trace!("Loaded state ({} bytes)", read_buffer.len());
-        );
-        if !success {
-            return false;
                 }
 
-        let audio_io_layout = wrapper.current_audio_io_layout.load();
+                success
-        if let Some(buffer_config) = wrapper.current_buffer_config.load() {
+            }
-            // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
+            None => false,
-            let mut init_context = wrapper.make_init_context();
-            let mut plugin = wrapper.plugin.lock();
-            plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context);
-            // TODO: This also goes for the VST3 version, but should we call reset here? Won't the
-            //       host always restart playback? Check this with a couple of hosts and remove the
-            //       duplicate reset if it's not needed.
-            process_wrapper(|| plugin.reset());
         }
-
-        // Reinitialize the plugin after loading state so it can respond to the new parameter values
-        let task_posted = wrapper.schedule_gui(Task::ParameterValuesChanged);
-        nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
-
-        nih_trace!("Loaded state ({length} bytes)");
-
-        true
     }
 
     unsafe extern "C" fn ext_tail_get(plugin: *const clap_plugin) -> u32 {

src/wrapper/standalone/context.rs

@@ -138,6 +138,6 @@ impl<P: Plugin, B: Backend<P>> GuiContext for WrapperGuiContext<P, B> {
     }
 
     fn set_state(&self, state: crate::wrapper::state::PluginState) {
-        self.wrapper.set_state_object(state)
+        self.wrapper.set_state_object_from_gui(state)
     }
 }

src/wrapper/standalone/wrapper.rs

@@ -411,7 +411,7 @@ impl<P: Plugin, B: Backend<P>> Wrapper<P, B> {
     /// Update the plugin's internal state, called by the plugin itself from the GUI thread. To
     /// prevent corrupting data and changing parameters during processing the actual state is only
     /// updated at the end of the audio processing cycle.
-    pub fn set_state_object(&self, state: PluginState) {
+    pub fn set_state_object_from_gui(&self, state: PluginState) {
         match self.updated_state_sender.send(state) {
             Ok(_) => {
                 // As mentioned above, the state object will be passed back to this thread
@@ -517,38 +517,7 @@ impl<P: Plugin, B: Backend<P>> Wrapper<P, B> {
                     //        alternative that doesn't do that
                     let updated_state = permit_alloc(|| self.updated_state_receiver.try_recv());
                     if let Ok(mut state) = updated_state {
-                        // FIXME: This is obviously not realtime-safe, but loading presets without
+                        self.set_state_inner(&mut state);
-                        //         doing this could lead to inconsistencies. It's the plugin's
-                        //         responsibility to not perform any realtime-unsafe work when the
-                        //         initialize function is called a second time if it supports
-                        //         runtime preset loading.  `state::deserialize_object()` normally
-                        //         never allocates, but if the plugin has persistent non-parameter
-                        //         data then its `deserialize_fields()` implementation may still
-                        //         allocate.
-                        permit_alloc(|| unsafe {
-                            state::deserialize_object::<P>(
-                                &mut state,
-                                self.params.clone(),
-                                |param_id| self.param_id_to_ptr.get(param_id).copied(),
-                                Some(&self.buffer_config),
-                            );
-                        });
-
-                        // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
-                        let mut init_context = self.make_init_context();
-                        let mut plugin = self.plugin.lock();
-                        // See above
-                        permit_alloc(|| {
-                            plugin.initialize(
-                                &self.audio_io_layout,
-                                &self.buffer_config,
-                                &mut init_context,
-                            )
-                        });
-                        plugin.reset();
-
-                        let task_posted = self.schedule_gui(Task::ParameterValuesChanged);
-                        nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
 
                         // We'll pass the state object back to the GUI thread so deallocation can
                         // happen there without potentially blocking the audio thread
@@ -594,4 +563,68 @@ impl<P: Plugin, B: Backend<P>> Wrapper<P, B> {
             transport,
         }
     }
+
+    /// Immediately set the plugin state. Returns `false` if the deserialization failed. In other
+    /// wrappers state is set from a couple places, so this function is here to be consistent and to
+    /// centralize all of this behavior. Includes `permit_alloc()`s around the deserialization and
+    /// initialization for the use case where `set_state_object_from_gui()` was called while the
+    /// plugin is process audio.
+    ///
+    /// Implicitly emits `Task::ParameterValuesChanged`.
+    ///
+    /// # Notes
+    ///
+    /// `self.plugin` must _not_ be locked while calling this function or it will deadlock.
+    fn set_state_inner(&self, state: &mut PluginState) -> bool {
+        // FIXME: This is obviously not realtime-safe, but loading presets without doing this could
+        //        lead to inconsistencies. It's the plugin's responsibility to not perform any
+        //        realtime-unsafe work when the initialize function is called a second time if it
+        //        supports runtime preset loading. `state::deserialize_object()` normally never
+        //        allocates, but if the plugin has persistent non-parameter data then its
+        //        `deserialize_fields()` implementation may still allocate.
+        let mut success = permit_alloc(|| unsafe {
+            state::deserialize_object::<P>(
+                state,
+                self.params.clone(),
+                |param_id| self.param_id_to_ptr.get(param_id).copied(),
+                Some(&self.buffer_config),
+            )
+        });
+        if !success {
+            nih_debug_assert_failure!("Deserializing plugin state from a state object failed");
+            return false;
+        }
+
+        // If the plugin was already initialized then it needs to be reinitialized
+        {
+            // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
+            let mut init_context = self.make_init_context();
+            let mut plugin = self.plugin.lock();
+
+            // See above
+            success = permit_alloc(|| {
+                plugin.initialize(
+                    &self.audio_io_layout,
+                    &self.buffer_config,
+                    &mut init_context,
+                )
+            });
+            if success {
+                process_wrapper(|| plugin.reset());
+            }
+        }
+
+        nih_debug_assert!(
+            success,
+            "Plugin returned false when reinitializing after loading state"
+        );
+
+        // Reinitialize the plugin after loading state so it can respond to the new parameter values
+        let task_posted = self.schedule_gui(Task::ParameterValuesChanged);
+        nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
+
+        // TODO: Check for GUI size changes and resize accordingly
+
+        success
+    }
 }

src/wrapper/state.rs

@@ -240,23 +240,13 @@ pub(crate) unsafe fn deserialize_object<P: Plugin>(
     true
 }
 
-/// Deserialize a plugin's state from a vector containing (compressed) JSON data. This can (and
+/// Deserialize a plugin's state from a vector containing (compressed) JSON data. Doesn't load the
-/// should) be shared across plugin formats. Returns `false` and logs an error if the state could
+/// plugin state since doing so should be accompanied by calls to `Plugin::init()` and
-/// not be deserialized. If the `zstd` feature is enabled, then this can
+/// `Plugin::reset()`, and this way all of that behavior can be encapsulated so it can be reused in
-///
+/// multiple places. The returned state object can be passed to [`deserialize_object()`].
-/// Make sure to reinitialize plugin after deserializing the state so it can react to the new
+pub(crate) unsafe fn deserialize_json(state: &[u8]) -> Option<PluginState> {
-/// parameter values. The smoothers have already been reset by this function.
-///
-/// The [`Plugin`] argument is used to call [`Plugin::filter_state()`] just before loading the
-/// state.
-pub(crate) unsafe fn deserialize_json<P: Plugin>(
-    state: &[u8],
-    plugin_params: Arc<dyn Params>,
-    params_getter: impl Fn(&str) -> Option<ParamPtr>,
-    current_buffer_config: Option<&BufferConfig>,
-) -> bool {
     #[cfg(feature = "zstd")]
-    let mut state: PluginState = match zstd::decode_all(state) {
+    let result: Option<PluginState> = match zstd::decode_all(state) {
         Ok(decompressed) => match serde_json::from_slice(decompressed.as_slice()) {
             Ok(s) => {
                 let state_bytes = decompressed.len();
@@ -267,11 +257,11 @@ pub(crate) unsafe fn deserialize_json<P: Plugin>(
                      ({compression_ratio:.1}% compression ratio)"
                 );
 
-                s
+                Some(s)
             }
             Err(err) => {
                 nih_debug_assert_failure!("Error while deserializing state: {}", err);
-                return false;
+                None
             }
         },
         // Uncompressed state files can still be loaded after enabling this feature to prevent
@@ -279,7 +269,7 @@ pub(crate) unsafe fn deserialize_json<P: Plugin>(
         Err(zstd_err) => match serde_json::from_slice(state) {
             Ok(s) => {
                 nih_trace!("Older uncompressed state found");
-                s
+                Some(s)
             }
             Err(json_err) => {
                 nih_debug_assert_failure!(
@@ -288,24 +278,19 @@ pub(crate) unsafe fn deserialize_json<P: Plugin>(
                     zstd_err,
                     json_err
                 );
-                return false;
+                None
             }
         },
     };
 
     #[cfg(not(feature = "zstd"))]
-    let mut state: PluginState = match serde_json::from_slice(state) {
+    let result: Option<PluginState> = match serde_json::from_slice(state) {
-        Ok(s) => s,
+        Ok(s) => Some(s),
         Err(err) => {
             nih_debug_assert_failure!("Error while deserializing state: {}", err);
-            return false;
+            None
         }
     };
 
-    deserialize_object::<P>(
+    result
-        &mut state,
-        plugin_params,
-        params_getter,
-        current_buffer_config,
-    )
 }

src/wrapper/vst3/context.rs

@@ -193,6 +193,6 @@ impl<P: Vst3Plugin> GuiContext for WrapperGuiContext<P> {
     }
 
     fn set_state(&self, state: PluginState) {
-        self.inner.set_state_object(state)
+        self.inner.set_state_object_from_gui(state)
     }
 }

src/wrapper/vst3/inner.rs

@@ -24,6 +24,7 @@ use crate::midi::{MidiConfig, PluginNoteEvent};
 use crate::params::internals::ParamPtr;
 use crate::params::{ParamFlags, Params};
 use crate::plugin::{Plugin, ProcessStatus, TaskExecutor, Vst3Plugin};
+use crate::util::permit_alloc;
 use crate::wrapper::state::{self, PluginState};
 use crate::wrapper::util::{hash_param_id, process_wrapper};
 
@@ -476,7 +477,7 @@ impl<P: Vst3Plugin> WrapperInner<P> {
     /// Update the plugin's internal state, called by the plugin itself from the GUI thread. To
     /// prevent corrupting data and changing parameters during processing the actual state is only
     /// updated at the end of the audio processing cycle.
-    pub fn set_state_object(&self, mut state: PluginState) {
+    pub fn set_state_object_from_gui(&self, mut state: PluginState) {
         // Use a loop and timeouts to handle the super rare edge case when this function gets called
         // between a process call and the host disabling the plugin
         loop {
@@ -509,27 +510,7 @@ impl<P: Vst3Plugin> WrapperInner<P> {
             } else {
                 // Otherwise we'll set the state right here and now, since this function should be
                 // called from a GUI thread
-                unsafe {
+                self.set_state_inner(&mut state);
-                    state::deserialize_object::<P>(
-                        &mut state,
-                        self.params.clone(),
-                        state::make_params_getter(&self.param_by_hash, &self.param_id_to_hash),
-                        self.current_buffer_config.load().as_ref(),
-                    );
-                }
-
-                let audio_io_layout = self.current_audio_io_layout.load();
-                if let Some(buffer_config) = self.current_buffer_config.load() {
-                    // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
-                    let mut init_context = self.make_init_context();
-                    let mut plugin = self.plugin.lock();
-                    plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context);
-                    process_wrapper(|| plugin.reset());
-                }
-
-                let task_posted = self.schedule_gui(Task::ParameterValuesChanged);
-                nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
-
                 break;
             }
         }
@@ -555,6 +536,68 @@ impl<P: Vst3Plugin> WrapperInner<P> {
             nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
         }
     }
+
+    /// Immediately set the plugin state. Returns `false` if the deserialization failed. The plugin
+    /// state is set from a couple places, so this function aims to deduplicate that. Includes
+    /// `permit_alloc()`s around the deserialization and initialization for the use case where
+    /// `set_state_object_from_gui()` was called while the plugin is process audio.
+    ///
+    /// Implicitly emits `Task::ParameterValuesChanged`.
+    ///
+    /// # Notes
+    ///
+    /// `self.plugin` must _not_ be locked while calling this function or it will deadlock.
+    pub fn set_state_inner(&self, state: &mut PluginState) -> bool {
+        let audio_io_layout = self.current_audio_io_layout.load();
+        let buffer_config = self.current_buffer_config.load();
+
+        // FIXME: This is obviously not realtime-safe, but loading presets without doing this could
+        //        lead to inconsistencies. It's the plugin's responsibility to not perform any
+        //        realtime-unsafe work when the initialize function is called a second time if it
+        //        supports runtime preset loading.  `state::deserialize_object()` normally never
+        //        allocates, but if the plugin has persistent non-parameter data then its
+        //        `deserialize_fields()` implementation may still allocate.
+        let mut success = permit_alloc(|| unsafe {
+            state::deserialize_object::<P>(
+                state,
+                self.params.clone(),
+                state::make_params_getter(&self.param_by_hash, &self.param_id_to_hash),
+                buffer_config.as_ref(),
+            )
+        });
+        if !success {
+            nih_debug_assert_failure!("Deserializing plugin state from a state object failed");
+            return false;
+        }
+
+        // If the plugin was already initialized then it needs to be reinitialized
+        if let Some(buffer_config) = buffer_config {
+            // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
+            let mut init_context = self.make_init_context();
+            let mut plugin = self.plugin.lock();
+
+            // See above
+            success = permit_alloc(|| {
+                plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context)
+            });
+            if success {
+                process_wrapper(|| plugin.reset());
+            }
+        }
+
+        nih_debug_assert!(
+            success,
+            "Plugin returned false when reinitializing after loading state"
+        );
+
+        // Reinitialize the plugin after loading state so it can respond to the new parameter values
+        let task_posted = self.schedule_gui(Task::ParameterValuesChanged);
+        nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
+
+        // TODO: Check for GUI size changes and resize accordingly
+
+        success
+    }
 }
 
 impl<P: Vst3Plugin> MainThreadExecutor<Task<P>> for WrapperInner<P> {

src/wrapper/vst3/wrapper.rs

@@ -20,7 +20,7 @@ use vst3_sys::vst::{
 use vst3_sys::VST3;
 use widestring::U16CStr;
 
-use super::inner::{ProcessEvent, Task, WrapperInner};
+use super::inner::{ProcessEvent, WrapperInner};
 use super::note_expressions::{self, NoteExpressionController};
 use super::util::{
     u16strlcpy, VstPtr, VST3_MIDI_CCS, VST3_MIDI_NUM_PARAMS, VST3_MIDI_PARAMS_START,
@@ -497,35 +497,17 @@ impl<P: Vst3Plugin> IComponent for Wrapper<P> {
             return kResultFalse;
         }
 
-        let success = state::deserialize_json::<P>(
+        match state::deserialize_json(&read_buffer) {
-            &read_buffer,
+            Some(mut state) => {
-            self.inner.params.clone(),
+                if self.inner.set_state_inner(&mut state) {
-            state::make_params_getter(&self.inner.param_by_hash, &self.inner.param_id_to_hash),
-            self.inner.current_buffer_config.load().as_ref(),
-        );
-        if !success {
-            return kResultFalse;
-        }
-
-        if let Some(buffer_config) = self.inner.current_buffer_config.load() {
-            // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
-            let mut init_context = self.inner.make_init_context();
-            let audio_io_layout = self.inner.current_audio_io_layout.load();
-            let mut plugin = self.inner.plugin.lock();
-            plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context);
-            // TODO: This also goes for the CLAP version, but should we call reset here? Won't the
-            //       host always restart playback? Check this with a couple of hosts and remove the
-            //       duplicate reset if it's not needed.
-            process_wrapper(|| plugin.reset());
-        }
-
-        // Reinitialize the plugin after loading state so it can respond to the new parameter values
-        let task_posted = self.inner.schedule_gui(Task::ParameterValuesChanged);
-        nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
-
                     nih_trace!("Loaded state ({} bytes)", read_buffer.len());
-
                     kResultOk
+                } else {
+                    kResultFalse
+                }
+            }
+            None => kResultFalse,
+        }
     }
 
     unsafe fn get_state(&self, state: SharedVstPtr<dyn IBStream>) -> tresult {
@@ -1795,38 +1777,7 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
             //        doesn't do that
             let updated_state = permit_alloc(|| self.inner.updated_state_receiver.try_recv());
             if let Ok(mut state) = updated_state {
-                // FIXME: This is obviously not realtime-safe, but loading presets without doing
+                self.inner.set_state_inner(&mut state);
-                //         this could lead to inconsistencies. It's the plugin's responsibility to
-                //         not perform any realtime-unsafe work when the initialize function is
-                //         called a second time if it supports runtime preset loading.
-                //         `state::deserialize_object()` normally never allocates, but if the plugin
-                //         has persistent non-parameter data then its `deserialize_fields()`
-                //         implementation may still allocate.
-                permit_alloc(|| {
-                    state::deserialize_object::<P>(
-                        &mut state,
-                        self.inner.params.clone(),
-                        state::make_params_getter(
-                            &self.inner.param_by_hash,
-                            &self.inner.param_id_to_hash,
-                        ),
-                        self.inner.current_buffer_config.load().as_ref(),
-                    );
-                });
-
-                // NOTE: This needs to be dropped after the `plugin` lock to avoid deadlocks
-                let mut init_context = self.inner.make_init_context();
-                let audio_io_layout = self.inner.current_audio_io_layout.load();
-                let buffer_config = self.inner.current_buffer_config.load().unwrap();
-                let mut plugin = self.inner.plugin.lock();
-                // See above
-                permit_alloc(|| {
-                    plugin.initialize(&audio_io_layout, &buffer_config, &mut init_context)
-                });
-                plugin.reset();
-
-                let task_posted = self.inner.schedule_gui(Task::ParameterValuesChanged);
-                nih_debug_assert!(task_posted, "The task queue is full, dropping task...");
 
                 // We'll pass the state object back to the GUI thread so deallocation can happen
                 // there without potentially blocking the audio thread