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Create stubs for the CLAP editor

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This commit is contained in:
Robbert van der Helm 2022-03-03 15:33:38 +01:00
parent 87830abdf6
commit 91f2f49fd3
1 changed files with 82 additions and 3 deletions
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85
src/wrapper/clap/wrapper.rs
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@ -15,6 +15,7 @@ use clap_sys::ext::audio_ports::{
use clap_sys::ext::audio_ports_config::{
clap_audio_ports_config, clap_plugin_audio_ports_config, CLAP_EXT_AUDIO_PORTS_CONFIG,
};
use clap_sys::ext::gui::{clap_plugin_gui, CLAP_EXT_GUI};
use clap_sys::ext::latency::{clap_host_latency, clap_plugin_latency, CLAP_EXT_LATENCY};
use clap_sys::ext::params::{
clap_param_info, clap_plugin_params, CLAP_EXT_PARAMS, CLAP_PARAM_IS_BYPASS,
@ -34,6 +35,7 @@ use crossbeam::atomic::AtomicCell;
use crossbeam::queue::ArrayQueue;
use lazy_static::lazy_static;
use parking_lot::{RwLock, RwLockWriteGuard};
use std::any::Any;
use std::cmp;
use std::collections::{HashMap, VecDeque};
use std::ffi::{c_void, CStr};
@ -49,7 +51,7 @@ use super::util::ClapPtr;
use crate::buffer::Buffer;
use crate::event_loop::{EventLoop, MainThreadExecutor, TASK_QUEUE_CAPACITY};
use crate::param::internals::ParamPtr;
use crate::plugin::{BufferConfig, BusConfig, ClapPlugin, NoteEvent, ProcessStatus};
use crate::plugin::{BufferConfig, BusConfig, ClapPlugin, Editor, NoteEvent, ProcessStatus};
use crate::wrapper::state;
use crate::wrapper::util::{hash_param_id, process_wrapper, strlcpy};
@ -71,6 +73,13 @@ pub struct Wrapper<P: ClapPlugin> {
/// The wrapped plugin instance.
plugin: RwLock<P>,
/// The plugin's editor, if it has one. This object does not do anything on its own, but we need
/// to instantiate this in advance so we don't need to lock the entire [Plugin] object when
/// creating an editor.
editor: Option<Arc<dyn Editor>>,
/// A handle for the currently active editor instance. The plugin should implement `Drop` on
/// this handle for its closing behavior.
editor_handle: RwLock<Option<Box<dyn Any + Send + Sync>>>,
/// The current IO configuration, modified through the `clap_plugin_audio_ports_config`
/// extension.
@ -114,6 +123,8 @@ pub struct Wrapper<P: ClapPlugin> {
clap_plugin_audio_ports: clap_plugin_audio_ports,
clap_plugin_gui: clap_plugin_gui,
clap_plugin_latency: clap_plugin_latency,
host_latency: Option<ClapPtr<clap_host_latency>>,
@ -219,6 +230,9 @@ impl<P: ClapPlugin> MainThreadExecutor<Task> for Wrapper<P> {
impl<P: ClapPlugin> Wrapper<P> {
pub fn new(host_callback: *const clap_host) -> Arc<Self> {
let plugin = RwLock::new(P::default());
let editor = plugin.read().editor().map(Arc::from);
let plugin_descriptor = Box::new(PluginDescriptor::default());
assert!(!host_callback.is_null());
@ -252,7 +266,10 @@ impl<P: ClapPlugin> Wrapper<P> {
this: RwLock::new(Weak::new()),
plugin: RwLock::new(P::default()),
plugin,
editor,
editor_handle: RwLock::new(None),
current_bus_config: AtomicCell::new(BusConfig {
num_input_channels: P::DEFAULT_NUM_INPUTS,
num_output_channels: P::DEFAULT_NUM_OUTPUTS,
@ -279,6 +296,18 @@ impl<P: ClapPlugin> Wrapper<P> {
get: Self::ext_audio_ports_get,
},
clap_plugin_gui: clap_plugin_gui {
create: Self::ext_gui_create,
destroy: Self::ext_gui_destroy,
set_scale: Self::ext_gui_set_scale,
get_size: Self::ext_gui_get_size,
can_resize: Self::ext_gui_can_resize,
round_size: Self::ext_gui_round_size,
set_size: Self::ext_gui_set_size,
show: Self::ext_gui_show,
hide: Self::ext_gui_hide,
},
clap_plugin_latency: clap_plugin_latency {
get: Self::ext_latency_get,
},
@ -705,13 +734,15 @@ impl<P: ClapPlugin> Wrapper<P> {
let wrapper = &*(plugin as *const Self);
// TODO: Implement the following extensions:
// - gui
// - the non-freestanding GUI extensions depending on the platform
let id = CStr::from_ptr(id);
if id == CStr::from_ptr(CLAP_EXT_AUDIO_PORTS_CONFIG) {
&wrapper.clap_plugin_audio_ports_config as *const _ as *const c_void
} else if id == CStr::from_ptr(CLAP_EXT_AUDIO_PORTS) {
&wrapper.clap_plugin_audio_ports as *const _ as *const c_void
} else if id == CStr::from_ptr(CLAP_EXT_GUI) && wrapper.editor.is_some() {
// Only report that we support this extension if the plugin has an editor
&wrapper.clap_plugin_gui as *const _ as *const c_void
} else if id == CStr::from_ptr(CLAP_EXT_LATENCY) {
&wrapper.clap_plugin_latency as *const _ as *const c_void
} else if id == CStr::from_ptr(CLAP_EXT_PARAMS) {
@ -911,6 +942,54 @@ impl<P: ClapPlugin> Wrapper<P> {
}
}
unsafe extern "C" fn ext_gui_create(plugin: *const clap_plugin) -> bool {
todo!()
}
unsafe extern "C" fn ext_gui_destroy(plugin: *const clap_plugin) {
todo!()
}
unsafe extern "C" fn ext_gui_set_scale(plugin: *const clap_plugin, scale: f64) -> bool {
todo!()
}
unsafe extern "C" fn ext_gui_get_size(
plugin: *const clap_plugin,
width: *mut u32,
height: *mut u32,
) -> bool {
todo!()
}
unsafe extern "C" fn ext_gui_can_resize(plugin: *const clap_plugin) -> bool {
todo!()
}
unsafe extern "C" fn ext_gui_round_size(
plugin: *const clap_plugin,
width: *mut u32,
height: *mut u32,
) {
todo!()
}
unsafe extern "C" fn ext_gui_set_size(
plugin: *const clap_plugin,
width: u32,
height: u32,
) -> bool {
todo!()
}
unsafe extern "C" fn ext_gui_show(plugin: *const clap_plugin) {
todo!()
}
unsafe extern "C" fn ext_gui_hide(plugin: *const clap_plugin) {
todo!()
}
unsafe extern "C" fn ext_latency_get(plugin: *const clap_plugin) -> u32 {
check_null_ptr!(0, plugin);
let wrapper = &*(plugin as *const Self);