Add settings with live changes

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
 resolver = "2"
-members = ["core", "clib", "soundfonts", "realtime", "render"]
+members = ["core", "clib", "soundfonts", "realtime", "render", "kdmapi"]
 
 [workspace.package]
 version = "0.3.0"

kdmapi/Cargo.toml

@@ -1,14 +1,14 @@
 [package]
-name = "kdmapi"
-description = "A cdylib wrapper around real-time to act as a drop-in replacement for OmniMIDI."
+name = "xsynth-kdmapi"
+description = "A cdylib wrapper around XSynth to act as a drop in replacement for OmniMIDI/KDMAPI."
+authors = ["Kaydax", "Arduano", "MBMS"]
+readme = "README.md"
 
-authors.workspace = true
 version.workspace = true
 edition.workspace = true
 license.workspace = true
 homepage.workspace = true
 repository.workspace = true
-readme.workspace = true
 keywords.workspace = true
 categories.workspace = true
 

kdmapi/README.md

@@ -0,0 +1,75 @@
+# xsynth-kdmapi
+A cdylib wrapper around XSynth to act as a drop in replacement for OmniMIDI/KDMAPI.
+
+## Usage
+1) Download `OmniMIDI.dll` from the [releases](https://github.com/BlackMIDIDevs/xsynth/releases) page
+    1) Alternatively you can build the library yourself by cloning the repo and compiling with Cargo.
+2) Place it in the same directory as your KDMAPI aware software of choice.
+
+Upon loading the library, the following two files will be generated under `%userprofile%/AppData/Roaming/xsynth-kdmapi` (on Windows):
+
+### `settings.json`
+The synthesizer settings. Fields:
+- `layers`
+
+    - The layer limit for each channel. One layer is one voice per key per channel. If set to `null` the synth will not limit the voices.
+    - This setting will be updated live during playback.
+
+- `fade_out_killing`
+
+    - If set to `true`, the voices killed due to the voice limit will fade out. If set to `false`, they will be killed immediately, usually causing clicking but improving performance.
+
+- `render_window_ms`
+
+    - The length of the buffer reader in ms.
+
+- `multithreading`
+
+    - Controls the multithreading used for rendering per-voice audio for all the voices stored in a key for a channel.
+    - Can be `"None"` for no multithreading, `"Auto"` for multithreading with an automatically determined thread count, or `{ "Manual": <threads> }` for multithreading with a custom thread count.
+
+- `ignore_range`
+
+    - The synth will ignore notes in this range of velocities.
+    - Values: `start` (low velocity), `end` (high velocity).
+
+### `soundfonts.json`
+The list of soundfonts that will be used. Any changes in the soundfont list will be updated live during playback.
+
+For information about the supported soundfont formats visit [the official XSynth documentation](https://docs.rs/xsynth-core/latest/xsynth_core/soundfont/struct.SampleSoundfont.html).
+
+Each soundfont item has the following fields:
+
+- `path`
+
+    - The path of the soundfont.
+
+- `enabled`
+
+    - Whether or not the soundfont will be loaded. Can be `true` or `false`.
+
+- `bank`
+
+    - The bank number (0-128) to extract and use from the soundfont.
+    - `null` means to use all available banks (bank 0 for SFZ).
+
+- `preset`
+
+    - The preset number (0-127) to extract and use from the soundfont.
+    - `null` means to use all available presets (preset 0 for SFZ).
+
+- `vol_envelope_options`
+
+    - Volume envelope configuration in the dB scale. Each option supports the following values: `"Exponential"` and `"Linear"`.
+        - `attack_curve`: Attack stage curve type
+        - `decay_curve`: Decay stage curve type
+        - `release_curve`: Release stage curve type
+
+- `use_effects`
+
+    - If set to `true`, the soundfont will be able to use signal processing effects. Currently this option only affects the cutoff filter. Setting to `false` disables those filters.
+
+- `interpolator`
+
+    - The type of interpolator used in the soundfont.
+    - Can be `"Nearest"` for nearest neighbor interpolation (no interpolation) or `"Linear"` for linear interpolation.

kdmapi/build.rs

@@ -1,5 +1,9 @@
 fn main() {
     if cfg!(windows) {
-        println!("cargo:rustc-cdylib-link-arg=/DEF:./kdmapi/Ordinals.def")
+        // Building on Windows
+        println!("cargo:rustc-cdylib-link-arg=/DEF:Ordinals.def")
+    } else if std::env::var_os("CARGO_CFG_WINDOWS").is_some() {
+        // Cross building for Windows
+        println!("cargo:rustc-cdylib-link-arg=Ordinals.def")
     }
 }