wip: refactor into fewer crates

deps/vst/examples/simple_host.rs

@@ -0,0 +1,63 @@
+extern crate vst;
+
+use std::env;
+use std::path::Path;
+use std::process;
+use std::sync::{Arc, Mutex};
+
+use vst::host::{Host, PluginLoader};
+use vst::plugin::Plugin;
+
+#[allow(dead_code)]
+struct SampleHost;
+
+impl Host for SampleHost {
+    fn automate(&self, index: i32, value: f32) {
+        println!("Parameter {} had its value changed to {}", index, value);
+    }
+}
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    if args.len() < 2 {
+        println!("usage: simple_host path/to/vst");
+        process::exit(1);
+    }
+
+    let path = Path::new(&args[1]);
+
+    // Create the host
+    let host = Arc::new(Mutex::new(SampleHost));
+
+    println!("Loading {}...", path.to_str().unwrap());
+
+    // Load the plugin
+    let mut loader =
+        PluginLoader::load(path, Arc::clone(&host)).unwrap_or_else(|e| panic!("Failed to load plugin: {}", e));
+
+    // Create an instance of the plugin
+    let mut instance = loader.instance().unwrap();
+
+    // Get the plugin information
+    let info = instance.get_info();
+
+    println!(
+        "Loaded '{}':\n\t\
+         Vendor: {}\n\t\
+         Presets: {}\n\t\
+         Parameters: {}\n\t\
+         VST ID: {}\n\t\
+         Version: {}\n\t\
+         Initial Delay: {} samples",
+        info.name, info.vendor, info.presets, info.parameters, info.unique_id, info.version, info.initial_delay
+    );
+
+    // Initialize the instance
+    instance.init();
+    println!("Initialized instance!");
+
+    println!("Closing instance...");
+    // Close the instance. This is not necessary as the instance is shut down when
+    // it is dropped as it goes out of scope.
+    // drop(instance);
+}