[yabridgectl] Add option for VST2 install location

tools/yabridgectl/src/config.rs

@@ -68,6 +68,9 @@ pub struct Config {
     /// Files/Common/VST3`). We're using an ordered set here out of convenience so we can't get
     /// duplicates and the config file is always sorted.
     pub plugin_dirs: BTreeSet<PathBuf>,
+    /// Where VST2 plugins are setup. This can be either in `~/.vst/yabridge` or inline with the
+    /// plugin's .dll` files.`
+    pub vst2_location: Vst2InstallationLocation,
     /// Always skip post-installation setup checks. This can be set temporarily by passing the
     /// `--no-verify` option to `yabridgectl sync`.
     pub no_verify: bool,
@@ -82,6 +85,21 @@ pub struct Config {
     pub last_known_config: Option<KnownConfig>,
 }
 
+/// Determines where VST2 plugins are set up. They can either be set up in `~/.vst/yabridge` by
+/// creating `libyabridge-chainloader-vst2.so` copies there and symlinking the Windows VST2 plugin
+/// `.dll` files right next to it, or those copies can be made right next to the orignal plugin
+/// files.
+#[derive(Deserialize, Serialize, Debug, PartialEq, Eq, Clone, Copy)]
+#[serde(rename_all = "snake_case")]
+pub enum Vst2InstallationLocation {
+    /// Set up the plugins in `~/.vst/yabridge`. The downside of this approach is that you cannot
+    /// have multiple plugins with the same name being provided by multiple directories or prefixes.
+    /// That might be useful for debugging purposes.
+    Centralized,
+    /// Create the `.so` files right next to the original VST2 plugins.
+    Inline,
+}
+
 /// Stores information about a combination of Wine and yabridge that works together properly.
 /// Whenever we encounter a new version of Wine or yabridge, we'll check whether `yabridge-host.exe`
 /// can run without issues. This is needed because older versions of Wine won't be able to run newer
@@ -129,6 +147,12 @@ pub struct YabridgeFiles {
     pub yabridge_host_32_exe_so: Option<PathBuf>,
 }
 
+impl Default for Vst2InstallationLocation {
+    fn default() -> Self {
+        Vst2InstallationLocation::Centralized
+    }
+}
+
 impl Config {
     /// Try to read the config file, creating a new default file if necessary. This will fail if the
     /// file could not be created or if it could not be parsed.