1 files changed, 39 insertions, 0 deletions
diff --git a/src/emscripten_api.rs b/src/emscripten_api.rs
new file mode 100644
index 0000000..ec6704e
--- /dev/null
+++ b/src/emscripten_api.rs
@@ -0,0 +1,39 @@
+use transforms;
+
+#[no_mangle]
+pub extern "C" fn find_fundamental_frequency(signal: *const f32, signal_length: isize, sample_rate: f32) -> f32 {
+    use std::slice;
+    let signal_slice = unsafe {
+        &slice::from_raw_parts(signal, signal_length as usize)
+    };
+    
+    transforms::find_fundamental_frequency(&signal_slice, sample_rate).unwrap_or(0.0)
+}
+
+#[no_mangle]
+pub extern "C" fn correlation(signal: *const f32, signal_length: isize) {
+    //TODO correlate inline
+}
+
+#[no_mangle]
+pub extern "C" fn hz_to_cents_error(hz: f32) -> f32 {
+    //TODO implement
+    0.0
+}
+
+use std::os::raw::c_char;
+use std::ffi::CStr;
+use std::ffi::CString;
+
+#[no_mangle]
+pub extern "C" fn hz_to_pitch(hz: f32) -> *mut c_char {
+    //TODO implement
+    CString::new("C 4")
+		.unwrap()
+        .into_raw()
+}
+
+#[no_mangle]
+pub extern "C" fn align_to_rising_edge(signal: *const f32, signal_length: isize) {
+    //TODO format signal nicely inline
+}