创建host框架

Cargo.toml

@@ -1,14 +1,2 @@
-[package]
-name = "arona"
-version = "0.0.1"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-cpal = { version = "*", features = ["asio-sys", "asio", "jack"] }
-iced = "*"
-rayon = "*"
-crossbeam = "*"
-serde = { version = "*", features = ["derive"] }
-serde_json = "*"
+[workspace]
+members = ["src/daw", "src/host"]

src/audio_engine/mod.rs

@@ -1,147 +0,0 @@
-mod audio_processor;
-
-use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
-use serde::{Deserialize, Serialize};
-
-#[derive(Serialize, Deserialize, Debug)]
-struct AudioConfig {
-    sample_rate: Option<u32>,
-    buffer_size: Option<u32>,
-    input_device: Option<String>,
-    output_device: Option<String>,
-}
-
-impl AudioConfig {
-    fn load() -> Self {
-        let config = std::fs::read_to_string("audio_config.json");
-        if config.is_err() {
-            AudioConfig {
-                sample_rate: None,
-                buffer_size: None,
-                input_device: None,
-                output_device: None,
-            }
-        }
-        else {
-            let result = serde_json::from_str(&config.unwrap());
-            if result.is_err() {
-                println!("failed to parse audio_config.json");
-                AudioConfig {
-                    sample_rate: None,
-                    buffer_size: None,
-                    input_device: None,
-                    output_device: None,
-                }
-            }
-            else {
-                result.unwrap()
-            }
-        }
-    }
-
-    fn save(&self) {
-        let config = serde_json::to_string(&self).expect("failed to serialize audio_config");
-        std::fs::write("audio_config.json", config).expect("failed to write audio_config.json");
-    }
-    fn get_sample_rate(&self) -> cpal::SampleRate {
-        cpal::SampleRate(self.sample_rate.unwrap_or(48000))
-    }
-    fn get_buffer_size(&self) -> cpal::BufferSize {
-        cpal::BufferSize::Fixed(self.buffer_size.unwrap_or(512))
-    }
-    fn get_input_device(&self, default: cpal::Device) -> cpal::Device {
-        let host = cpal::default_host();
-        let input_device = self.input_device.as_ref().map(|name| {
-            host.devices().unwrap().find(|device| {
-                device.name().unwrap() == *name
-            })
-        }).flatten();
-        input_device.unwrap_or(default)
-    }
-    fn get_output_device(&self, default: cpal::Device) -> cpal::Device {
-        let host = cpal::default_host();
-        let output_device = self.output_device.as_ref().map(|name| {
-            host.devices().unwrap().find(|device| {
-                device.name().unwrap() == *name
-            })
-        }).flatten();
-        output_device.unwrap_or(default)
-    }
-}
-
-pub struct AudioEngine {
-    host : cpal::Host,
-    input_device: cpal::Device,
-    output_device: cpal::Device,
-    sample_rate: cpal::SampleRate,
-    buffer_size: cpal::BufferSize,
-
-    input_stream: Option<cpal::Stream>,
-    output_stream: Option<cpal::Stream>,
-}
-
-impl AudioEngine {
-    pub fn new() -> Self {
-        println!("Supported hosts:\n  {:?}", cpal::ALL_HOSTS);
-        let default_host = cpal::default_host();
-        let default_input_device = default_host.default_input_device().expect("no input device");
-        let default_output_device = default_host.default_output_device().expect("no output device");
-
-        let audio_config = AudioConfig::load();
-
-        let out = AudioEngine {
-            host: default_host,
-            input_device: audio_config.get_input_device(default_input_device),
-            output_device: audio_config.get_output_device(default_output_device),
-            sample_rate: audio_config.get_sample_rate(),
-            buffer_size: audio_config.get_buffer_size(),
-            input_stream: None,
-            output_stream: None,
-        };
-        out.save_config();
-        println!("Input device: {}", out.input_device.name().unwrap());
-        println!("Output device: {}", out.output_device.name().unwrap());
-        out
-    }
-
-    pub fn save_config(&self) {
-        let audio_config = AudioConfig {
-            sample_rate: Some(self.sample_rate.0),
-            buffer_size: Some(match self.buffer_size {
-                cpal::BufferSize::Default => { 0 }
-                cpal::BufferSize::Fixed(size) => { size }
-            }),
-            input_device: Some(self.input_device.name().unwrap()),
-            output_device: Some(self.output_device.name().unwrap()),
-        };
-        audio_config.save();
-    }
-
-    pub fn open_stream(&mut self) {
-        // 不要创建输入流，输入流只在需要时创建
-        let output_stream = self.output_device.build_output_stream(
-            &self.output_stream_config(),
-            move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
-                self.process_output(data);
-            },
-            move |err| {
-                eprintln!("an error occurred on stream: {}", err);
-            },
-            None
-        ).unwrap();
-    }
-
-    fn output_stream_config(&self) -> cpal::StreamConfig {
-        cpal::StreamConfig {
-            channels: 2,
-            buffer_size: self.buffer_size,
-            sample_rate: self.sample_rate,
-        }
-    }
-
-    fn process_output(&mut self, data: &mut [f32]) {
-        for sample in data.iter_mut() {
-            *sample = 0.0;
-        }
-    }
-}

src/daw/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "arona"
+version = "0.0.1"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+cpal = { version = "*", features = ["asio-sys", "asio", "jack"] }
+iced = "*"
+rayon = "*"
+crossbeam = "*"
+serde = { version = "*", features = ["derive"] }
+serde_json = "*"
+arona_host = { path = "../host" }

src/daw/src/audio_engine/audio_device.rs

@@ -0,0 +1,6 @@
+use cpal::traits::DeviceTrait;
+
+pub fn get_device_name(device: Option<&cpal::Device>) -> String {
+	device.map(|device| device.name().unwrap()).unwrap_or("None".to_string())
+}
+

src/daw/src/audio_engine/mod.rs

@@ -0,0 +1,195 @@
+pub mod audio_processor;
+pub mod audio_device;
+
+use cpal::SupportedBufferSize;
+use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
+use serde::{Deserialize, Serialize};
+use crate::audio_engine::audio_device::get_device_name;
+
+#[derive(Serialize, Deserialize, Debug)]
+struct AudioConfig {
+    sample_rate: Option<u32>,
+    buffer_size: Option<u32>,
+    input_device: Option<String>,
+    output_device: Option<String>,
+}
+
+impl AudioConfig {
+    fn load() -> Self {
+        let config = std::fs::read_to_string("audio_config.json");
+        let default = AudioConfig {
+            sample_rate: None,
+            buffer_size: None,
+            input_device: None,
+            output_device: None,
+        };
+        if config.is_err() {
+            println!("读取audio_config.json失败, 将会使用默认配置");
+            return default;
+        }
+        let result = serde_json::from_str(&config.unwrap());
+        if result.is_err() {
+            println!("解析audio_config.json失败, 将会使用默认配置");
+        }
+        result.unwrap_or(default)
+    }
+
+    fn save(&self) {
+        let config = serde_json::to_string(&self).expect("序列化audio_config.json失败");
+        std::fs::write("audio_config.json", config).expect("无法写入audio_config.json");
+    }
+    fn get_sample_rate(&self, default: u32) -> cpal::SampleRate {
+        cpal::SampleRate(self.sample_rate.unwrap_or(default))
+    }
+    fn get_buffer_size(&self, default: cpal::BufferSize) -> cpal::BufferSize {
+        let size = self.buffer_size.unwrap_or(0);
+        if size == 0 {
+            default
+        } else {
+            cpal::BufferSize::Fixed(size)
+        }
+    }
+    fn get_input_device(&self, default: Option<cpal::Device>) -> Option<cpal::Device> {
+        let host = cpal::default_host();
+        let input_device = self.input_device.as_ref().map(|name| {
+            host.devices().unwrap().find(|device| {
+                device.name().unwrap() == *name
+            })
+        }).flatten();
+        input_device.or(default)
+    }
+    fn get_output_device(&self, default: Option<cpal::Device>) -> Option<cpal::Device> {
+        let host = cpal::default_host();
+        let output_device = self.output_device.as_ref().map(|name| {
+            host.devices().unwrap().find(|device| {
+                device.name().unwrap() == *name
+            })
+        }).flatten();
+        output_device.or(default)
+    }
+}
+
+pub struct AudioEngine {
+    host : cpal::Host,
+    input_device: Option<cpal::Device>,
+    output_device: Option<cpal::Device>,
+    sample_rate: cpal::SampleRate,
+    buffer_size: cpal::BufferSize,
+
+    input_stream: Option<cpal::Stream>,
+    output_stream: Option<cpal::Stream>,
+}
+
+impl AudioEngine {
+    pub fn new() -> Self {
+        println!("Supported hosts:\n  {:?}", cpal::ALL_HOSTS);
+
+        let default_host = cpal::host_from_id(cpal::HostId::Asio).unwrap_or(cpal::default_host());
+        let default_output_device = default_host.default_output_device();
+        let output_config = default_output_device.as_ref().unwrap().default_output_config().unwrap();
+        let sample_rate = output_config.sample_rate();
+
+        let audio_config = AudioConfig::load();
+
+        let out = AudioEngine {
+            host: default_host,
+            input_device: audio_config.get_input_device(None),
+            output_device: audio_config.get_output_device(default_output_device),
+            sample_rate: audio_config.get_sample_rate(sample_rate.0),
+            buffer_size: audio_config.get_buffer_size(cpal::BufferSize::Default),
+            input_stream: None,
+            output_stream: None,
+        };
+        out.save_config();
+
+        let input_device_name = get_device_name(out.input_device.as_ref());
+        let output_device_name = get_device_name(out.output_device.as_ref());
+        println!("Using API: {}", out.host.id().name());
+        println!("Input device: {}", input_device_name);
+        println!("Output device: {}", output_device_name);
+        out
+    }
+
+    pub fn save_config(&self) {
+        let audio_config = AudioConfig {
+            sample_rate: Some(self.sample_rate.0),
+            buffer_size: Some(match self.buffer_size {
+                cpal::BufferSize::Default => { 0 }
+                cpal::BufferSize::Fixed(size) => { size }
+            }),
+            input_device: Some(get_device_name(self.input_device.as_ref())),
+            output_device: Some(get_device_name(self.output_device.as_ref())),
+        };
+        audio_config.save();
+    }
+
+    pub fn open_stream(&mut self) {
+        self.try_open_input_stream();
+        self.try_open_output_stream();
+    }
+
+    fn try_open_output_stream(&mut self) {
+        if self.output_device.is_none() {
+            return;
+        }
+        let device = self.output_device.as_ref().unwrap();
+        let config = self.output_stream_config();
+        let output_stream = device.build_output_stream(
+            &config,
+            |data, callback| process_output(data, callback),
+            move |err| eprintln!("an error occurred on stream: {}", err),
+            None
+        );
+        if output_stream.is_err() {
+            eprintln!("failed to open output stream: {}", output_stream.err().unwrap());
+            return;
+        }
+
+        self.output_stream = Some(output_stream.unwrap());
+        let play_result = self.output_stream.as_mut().unwrap().play();
+        if play_result.is_err() {
+            eprintln!("failed to play output stream: {}", play_result.err().unwrap());
+        }
+    }
+
+    fn try_open_input_stream(&mut self) {
+        if self.input_device.is_none() {
+            return;
+        }
+        let device = self.input_device.as_ref().unwrap();
+        let input_stream = device.build_input_stream(
+            &self.input_stream_config(),
+            |data, callback| process_input(data, callback),
+            move |err| eprintln!("an error occurred on stream: {}", err),
+            None
+        ).unwrap();
+        input_stream.play().unwrap();
+        self.input_stream = Some(input_stream);
+    }
+
+    fn output_stream_config(&self) -> cpal::StreamConfig {
+        cpal::StreamConfig {
+            channels: 2,
+            buffer_size: self.buffer_size,
+            sample_rate: self.sample_rate,
+        }
+    }
+
+    fn input_stream_config(&self) -> cpal::StreamConfig {
+        cpal::StreamConfig {
+            channels: 2,
+            buffer_size: self.buffer_size,
+            sample_rate: self.sample_rate,
+        }
+    }
+}
+
+fn process_output(data: &mut [f32], callback_info: &cpal::OutputCallbackInfo) {
+    for sample in data.iter_mut() {
+        *sample = 0.0;
+    }
+}
+
+fn process_input(data: &[f32], callback_info: &cpal::InputCallbackInfo) {
+
+}

src/daw/src/main.rs

@@ -0,0 +1,12 @@
+mod audio_engine;
+
+use std::thread::sleep;
+use audio_engine::*;
+
+fn main() {
+    let mut engine = AudioEngine::new();
+    engine.open_stream();
+    loop {
+        sleep(std::time::Duration::from_millis(1));
+    }
+}

src/host/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "arona_host"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+vst2 = "*"
+shmem-ipc = "*"
+sdl2 = "*"
+
+[[bin]]
+name = "vst2host"
+path = "src/vst2host.rs"
+
+[[bin]]
+name = "vst3host"
+path = "src/vst3host.rs"

src/host/src/host.rs

@@ -0,0 +1,35 @@
+
+pub enum HostEvent<'a> {
+	Midi {
+		data: [u8; 3],
+		delta_frames: i32,
+		live: bool,
+		note_length: Option<i32>,
+		note_offset: Option<i32>,
+		detune: i8,
+		note_off_velocity: u8,
+	},
+	SysEx {
+		payload: &'a [u8],
+		delta_frames: i32,
+	},
+}
+
+pub trait HostInterface {
+	fn get_host_name(&self) -> String;
+	fn get_host_version(&self) -> String;
+	fn get_host_vendor(&self) -> String;
+
+
+	fn set_parameter(&mut self, index: i32, value: f32);
+	fn get_parameter(&self, index: i32) -> f32;
+
+	fn process_f32(&mut self, input: Vec<&mut [f32]>, output: Vec<&mut [f32]>);
+	fn process_f64(&mut self, input: Vec<&mut [f64]>, output: Vec<&mut [f64]>);
+	fn process_events(&mut self, events: Vec<HostEvent>);
+
+	fn open_editor(&mut self);
+	fn close_editor(&mut self);
+	fn is_editor_open(&self) -> bool;
+	fn has_editor(&mut self) -> bool;
+}

src/host/src/lib.rs

@@ -0,0 +1 @@
+pub mod host;

src/host/src/vst2host.rs

@@ -0,0 +1,148 @@
+extern crate vst2;
+
+mod host;
+
+use std::sync::{Arc, Mutex};
+use vst2::buffer::AudioBuffer;
+use vst2::host::*;
+use vst2::plugin::*;
+use vst2::event::Event;
+use crate::host::HostEvent;
+use host::HostInterface;
+
+impl HostEvent {
+	fn to_vst2_event(&self) -> Event {
+		match self {
+			HostEvent::Midi { data, delta_frames, live, note_length, note_offset, detune, note_off_velocity } => {
+				Event::Midi {
+					data: *data,
+					delta_frames: *delta_frames,
+					live: *live,
+					note_length: note_length.map(|x| *x),
+					note_offset: note_offset.map(|x| *x),
+					detune: *detune,
+					note_off_velocity: *note_off_velocity,
+				}
+			},
+			HostEvent::SysEx { payload, delta_frames } => {
+				Event::SysEx {
+					payload,
+					delta_frames: *delta_frames,
+				}
+			},
+		}
+	}
+}
+
+struct Vst2Host { on_automate: Option<Box<dyn Fn(i32, f32) + Send>> }
+
+impl Host for Vst2Host {
+	fn automate(&self, index: i32, value: f32) {
+		self.on_automate.as_ref().map(|f| f(index, value));
+	}
+}
+
+struct InternalVst2Host {
+	host: Arc<Mutex<Vst2Host>>,
+	loader: PluginLoader<Vst2Host>,
+	instance: PluginInstance,
+	window: Option<Window>,
+}
+
+fn on_window_update(window: &mut Window, elapsed: std::time::Duration) {
+
+}
+
+impl InternalVst2Host {
+	fn new(path: &std::path::Path) -> Self {
+		let host = Arc::new(Mutex::new(Vst2Host{
+			on_automate: None,
+		}));
+
+		let mut loader = PluginLoader::load(path, host.clone()).unwrap();
+		let mut instance = loader.instance().unwrap();
+		let editor = instance.get_editor();
+
+		let mut window : Option<Window> = None;
+		if editor.is_some() {
+			let w = Window::new(instance.get_info().name.as_mut(), on_window_update);
+			let editor_size = editor.unwrap().size();
+			window = Some(w);
+		}
+
+		InternalVst2Host {
+			host,
+			loader,
+			instance,
+			window,
+		}
+	}
+
+	fn on_automate(&self, index: i32, value: f32) {
+		println!("Automate: {} {}", index, value);
+	}
+}
+
+impl HostInterface for InternalVst2Host {
+	fn get_host_name(&self) -> String {
+		self.instance.get_info().name
+	}
+
+	fn get_host_version(&self) -> String {
+		self.instance.get_info().version.to_string()
+	}
+
+	fn get_host_vendor(&self) -> String {
+		self.instance.get_info().vendor
+	}
+
+	fn set_parameter(&mut self, index: i32, value: f32) {
+		self.instance.set_parameter(index, value);
+	}
+
+	fn get_parameter(&self, index: i32) -> f32 {
+		self.instance.get_parameter(index)
+	}
+
+	fn process_f32(&mut self, input: Vec<&mut [f32]>, output: Vec<&mut [f32]>) {
+		let buffer = AudioBuffer::new(input, output);
+		self.instance.process(buffer);
+	}
+
+	fn process_f64(&mut self, input: Vec<&mut [f64]>, output: Vec<&mut [f64]>) {
+		let buffer = AudioBuffer::new(input, output);
+		self.instance.process_f64(buffer);
+	}
+
+	fn process_events(&mut self, events: Vec<HostEvent>) {
+		let events = events.iter().map(|event| event.to_vst2_event()).collect();
+		self.instance.process_events(events);
+	}
+
+	fn open_editor(&mut self) {
+		let editor = self.instance.get_editor();
+		editor.unwrap().open();
+	}
+
+	fn close_editor(&mut self) {
+		todo!()
+	}
+
+	fn is_editor_open(&self) -> bool {
+		todo!()
+	}
+
+	fn has_editor(&mut self) -> bool {
+		self.instance.get_editor().is_some()
+	}
+}
+
+fn main() {
+	// 获取参数
+	let args: Vec<String> = std::env::args().collect();
+	// 参数1是插件路径
+	let path = std::path::Path::new(&args[1]);
+	let internal_host = InternalVst2Host::new(path);
+
+	let mut shmem = Sheme;
+}

src/host/src/vst3host.rs

@@ -0,0 +1,5 @@
+mod host;
+
+fn main() {
+
+}

src/main.rs

@@ -1,6 +0,0 @@
-mod audio_engine;
-use audio_engine::*;
-
-fn main() {
-    let mut engine = AudioEngine::new();
-}