feat: add cbindgen to livekit-ffi (#57)

livekit-ffi/cbindgen.toml

@@ -0,0 +1,4 @@
+language = "C"
+include_guard = "livekit_ffi"
+autogen_warning = "/* Warning, this file is autogenerated. Don't modify this manually. */"
+usize_is_size_t = true

livekit-ffi/include/livekit_ffi.h

@@ -0,0 +1,23 @@
+#ifndef livekit_ffi
+#define livekit_ffi
+
+/* Warning, this file is autogenerated. Don't modify this manually. */
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef size_t FfiHandleId;
+
+#define INVALID_HANDLE 0
+
+FfiHandleId livekit_ffi_request(const uint8_t *data,
+                                size_t len,
+                                const uint8_t **res_ptr,
+                                size_t *res_len);
+
+bool livekit_ffi_drop_handle(FfiHandleId handle_id);
+
+#endif /* livekit_ffi */

livekit-ffi/src/lib.rs

@@ -31,7 +31,7 @@ pub type FfiHandle = Box<dyn Any + Send + Sync>;
 pub const INVALID_HANDLE: FfiHandleId = 0;
 
 #[no_mangle]
-pub(crate) extern "C" fn livekit_ffi_request(
+pub extern "C" fn livekit_ffi_request(
     data: *const u8,
     len: usize,
     res_ptr: *mut *const u8,
@@ -69,7 +69,7 @@ pub(crate) extern "C" fn livekit_ffi_request(
 }
 
 #[no_mangle]
-pub(crate) extern "C" fn livekit_ffi_drop_handle(handle_id: FfiHandleId) -> bool {
+pub extern "C" fn livekit_ffi_drop_handle(handle_id: FfiHandleId) -> bool {
     // Free the memory
     server::FFI_SERVER
         .ffi_handles()