Attempt to make it so that the sound converter doesn't create too many tokens

agb-sound-converter/Cargo.lock

@@ -9,6 +9,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
+ "siphasher",
  "syn",
 ]
 
@@ -36,6 +37,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "siphasher"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "533494a8f9b724d33625ab53c6c4800f7cc445895924a8ef649222dcb76e938b"
+
 [[package]]
 name = "syn"
 version = "1.0.80"

agb-sound-converter/Cargo.toml

@@ -6,6 +6,14 @@ edition = "2018"
 license = "MPL-2.0"
 description = "Library for converting wavs for use on the Game Boy Advance"
 
+[profile.dev]
+opt-level = 3
+debug = true
+
+[profile.release]
+lto = true
+debug = true
+
 [lib]
 proc-macro = true
 
@@ -14,3 +22,4 @@ hound = "3.4.0"
 syn = "1.0.73"
 proc-macro2 = "1.0.27"
 quote = "1.0.9"
+siphasher = "0.3.7"

agb-sound-converter/src/lib.rs

@@ -1,7 +1,13 @@
 use hound;
 use proc_macro::TokenStream;
 use quote::quote;
-use std::path::Path;
+use siphasher::sip::SipHasher;
+use std::{
+    fs::File,
+    hash::{Hash, Hasher},
+    io::Write,
+    path::Path,
+};
 use syn::parse_macro_input;
 
 #[proc_macro]
@@ -26,13 +32,31 @@ pub fn include_wav(input: TokenStream) -> TokenStream {
 
     let samples = samples_from_reader(wav_reader);
 
+    let out_file_path_include = {
+        let out_dir = std::env::var("OUT_DIR").expect("Expected OUT_DIR");
+        let out_filename = get_out_filename(&path);
+
+        let out_file_path = Path::new(&out_dir).with_file_name(&out_filename);
+
+        let mut out_file = File::create(&out_file_path).expect("Failed to open file for writing");
+
+        out_file
+            .write_all(&samples.collect::<Vec<_>>())
+            .expect("Failed to write to temporary file");
+
+        out_file_path
+    }
+    .clone()
+    .canonicalize()
+    .expect("Failed to canonicalize");
+
+    let out_file_path_include = out_file_path_include.to_string_lossy();
+
     let result = quote! {
         {
             const _: &[u8] = include_bytes!(#include_path);
 
-            &[
+            include_bytes!(#out_file_path_include)
-                #(#samples),*
-            ]
         }
     };
 
@@ -59,3 +83,10 @@ where
         ),
     }
 }
+
+fn get_out_filename(path: &Path) -> String {
+    let mut hasher = SipHasher::new();
+    path.hash(&mut hasher);
+
+    format!("{}.raw", hasher.finish())
+}

agb/Cargo.lock

@@ -47,6 +47,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
+ "siphasher",
  "syn",
 ]
 
@@ -289,6 +290,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "siphasher"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "533494a8f9b724d33625ab53c6c4800f7cc445895924a8ef649222dcb76e938b"
+
 [[package]]
 name = "syn"
 version = "1.0.78"