Add the glue code to call Bliss functions and return JS values

.gitignore

@@ -1,2 +1,3 @@
 target
 node_modules
+index.node

Cargo.lock

@@ -244,7 +244,7 @@ checksum = "c688fc74432808e3eb684cae8830a86be1d66a2bd58e1f248ed0960a590baf6f"
 dependencies = [
  "glob",
  "libc",
- "libloading 0.7.4",
+ "libloading",
 ]
 
 [[package]]
@@ -693,16 +693,6 @@ version = "0.2.151"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "302d7ab3130588088d277783b1e2d2e10c9e9e4a16dd9050e6ec93fb3e7048f4"
 
-[[package]]
-name = "libloading"
-version = "0.6.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "351a32417a12d5f7e82c368a66781e307834dae04c6ce0cd4456d52989229883"
-dependencies = [
- "cfg-if",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "libloading"
 version = "0.7.4"
@@ -845,45 +835,29 @@ dependencies = [
 
 [[package]]
 name = "neon"
-version = "0.10.1"
+version = "1.0.0-alpha.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28e15415261d880aed48122e917a45e87bb82cf0260bb6db48bbab44b7464373"
+checksum = "8687031acf51f8b065aaf906b5a694f8d6b547c5c9430b6d636ab42422bfd0cc"
 dependencies = [
- "neon-build",
+ "libloading",
  "neon-macros",
- "neon-runtime",
+ "once_cell",
  "semver",
+ "send_wrapper",
  "smallvec",
 ]
 
-[[package]]
-name = "neon-build"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bac98a702e71804af3dacfde41edde4a16076a7bbe889ae61e56e18c5b1c811"
-
 [[package]]
 name = "neon-macros"
-version = "0.10.1"
+version = "1.0.0-alpha.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7288eac8b54af7913c60e0eb0e2a7683020dffa342ab3fd15e28f035ba897cf"
+checksum = "facd664405d5140677a63d7b7c5762425dd9d4179e07d2e67da29089c50b1ddd"
 dependencies = [
  "quote",
  "syn 1.0.109",
  "syn-mid",
 ]
 
-[[package]]
-name = "neon-runtime"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4676720fa8bb32c64c3d9f49c47a47289239ec46b4bdb66d0913cc512cb0daca"
-dependencies = [
- "cfg-if",
- "libloading 0.6.7",
- "smallvec",
-]
-
 [[package]]
 name = "noisy_float"
 version = "0.2.0"
@@ -1373,18 +1347,15 @@ checksum = "f98d2aa92eebf49b69786be48e4477826b256916e84a57ff2a4f21923b48eb4c"
 
 [[package]]
 name = "semver"
-version = "0.9.0"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
+checksum = "836fa6a3e1e547f9a2c4040802ec865b5d85f4014efe00555d7090a3dcaa1090"
-dependencies = [
- "semver-parser",
-]
 
 [[package]]
-name = "semver-parser"
+name = "send_wrapper"
-version = "0.7.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
+checksum = "cd0b0ec5f1c1ca621c432a25813d8d60c88abe6d3e08a3eb9cf37d97a0fe3d73"
 
 [[package]]
 name = "serde"

Cargo.toml

@@ -69,7 +69,7 @@ anyhow = { version = "1.0.58", optional = true }
 indicatif = { version = "0.17.0", optional = true }
 
 [dependencies.neon]
-version = "0.10.1"
+version = "1.0.0-alpha.4"
 default-features = false
 features = ["napi-6", "channel-api", "promise-api", "try-catch-api"]
 

src/lib.rs

@@ -10,15 +10,32 @@ mod temporal;
 mod timbral;
 mod utils;
 
-use neon::prelude::*;
+use neon::{prelude::*, types::buffer::TypedArray};
+use song::Song;
 
 #[neon::main]
 fn main(mut cx: ModuleContext) -> NeonResult<()> {
-    cx.export_function("test", test)?;
+    cx.export_function("analyze", analyze)?;
-
     Ok(())
 }
 
-fn test(mut cx: FunctionContext) -> JsResult<JsNumber> {
+/// Returns a Uint8Array, with the first 2 bytes being the version in platform endianness
-    Ok(cx.number(34))
+/// and the rest (currently 80 bytes) being the analysis data in little endian
+fn analyze(mut cx: FunctionContext) -> JsResult<JsUint8Array> {
+    let path = cx.argument::<JsString>(0)?.value(&mut cx);
+    let song = Song::from_path(path)
+        .or_else(|e| cx.throw_error(e.to_string()))?;
+    let version_bytes = song.features_version.to_ne_bytes();
+    let analysis_bytes = song.analysis.as_bytes();
+
+    let mut buffer_handle = JsUint8Array::new(
+        &mut cx,
+        analysis_bytes.len() + version_bytes.len(),
+    )?;
+    let buffer = buffer_handle.as_mut_slice(&mut cx);
+    
+    buffer[0..version_bytes.len()].copy_from_slice(&version_bytes);
+    buffer[version_bytes.len()..].copy_from_slice(&analysis_bytes);
+
+    Ok(buffer_handle)
 }