diff --git a/src/lib_ccx/ccx_dtvcc.h b/src/lib_ccx/ccx_dtvcc.h
index 1f4d0b65c..3bcf40d46 100644
--- a/src/lib_ccx/ccx_dtvcc.h
+++ b/src/lib_ccx/ccx_dtvcc.h
@@ -13,7 +13,7 @@ void dtvcc_free(dtvcc_ctx **);
 #ifndef DISABLE_RUST
 extern void *ccxr_dtvcc_init(struct ccx_decoder_dtvcc_settings *settings_dtvcc);
 extern void ccxr_dtvcc_free(void *dtvcc_rust);
-extern void ccxr_dtvcc_process_data(void *dtvcc_rust, const unsigned char *data);
+extern void ccxr_dtvcc_process_data(void *dtvcc_rust, const unsigned char cc_valid, const unsigned char cc_type, const unsigned char data1, const unsigned char data2);
 #endif
 
 #endif // CCEXTRACTOR_CCX_DTVCC_H
diff --git a/src/lib_ccx/mp4.c b/src/lib_ccx/mp4.c
index 1ba2d3135..e4b1350a1 100644
--- a/src/lib_ccx/mp4.c
+++ b/src/lib_ccx/mp4.c
@@ -420,7 +420,7 @@ static int process_clcp(struct lib_ccx_ctx *ctx, struct encoder_ctx *enc_ctx,
 
 #ifndef DISABLE_RUST
 				ccxr_dtvcc_set_encoder(dec_ctx->dtvcc_rust, enc_ctx);
-				ccxr_dtvcc_process_data(dec_ctx->dtvcc_rust, (unsigned char *)temp);
+				ccxr_dtvcc_process_data(dec_ctx->dtvcc_rust, temp[0], temp[1], temp[2], temp[3]);
 #else
 				dec_ctx->dtvcc->encoder = (void *)enc_ctx;
 				dtvcc_process_data(dec_ctx->dtvcc, (unsigned char *)temp);
diff --git a/src/rust/src/lib.rs b/src/rust/src/lib.rs
index 02a1a072c..0ddd14229 100644
--- a/src/rust/src/lib.rs
+++ b/src/rust/src/lib.rs
@@ -133,8 +133,15 @@ extern "C" fn ccxr_dtvcc_set_encoder(dtvcc_rust: *mut Dtvcc, encoder: *mut encod
     unsafe { (*dtvcc_rust).encoder = encoder };
 }
 
-extern "C" fn ccxr_dtvcc_process_data(dtvcc_rust: *mut Dtvcc, data: &[u8]) {
-    unsafe { &mut (*dtvcc_rust) }.process_cc_data(data[0], data[1], data[2], data[3]);
+#[no_mangle]
+extern "C" fn ccxr_dtvcc_process_data(
+    dtvcc_rust: *mut Dtvcc,
+    cc_valid: u8,
+    cc_type: u8,
+    data1: u8,
+    data2: u8,
+) {
+    unsafe { &mut (*dtvcc_rust) }.process_cc_data(cc_valid, cc_type, data1, data2);
 }
 
 /// Process cc_data