samsung: hidl: fingerprint: call notify on cancel

Change-Id: Idb1b3200e571c546441fa9c0cfd1a1728e165a96

hidl/fingerprint/Android.mk

@@ -31,6 +31,10 @@ LOCAL_SHARED_LIBRARIES := \
     libutils \
     android.hardware.biometrics.fingerprint@2.1
 
+ifeq ($(TARGET_SEC_FP_CALL_NOTIFY_ON_CANCEL),true)
+    LOCAL_CFLAGS += -DCALL_NOTIFY_ON_CANCEL
+endif
+
 ifeq ($(TARGET_SEC_FP_USES_PERCENTAGE_SAMPLES),true)
     LOCAL_CFLAGS += -DUSES_PERCENTAGE_SAMPLES
 endif

hidl/fingerprint/BiometricsFingerprint.cpp

@@ -173,7 +173,18 @@ Return<uint64_t> BiometricsFingerprint::getAuthenticatorId() {
 }
 
 Return<RequestStatus> BiometricsFingerprint::cancel() {
-    return ErrorFilter(ss_fingerprint_cancel());
+    int32_t ret = ss_fingerprint_cancel();
+
+#ifdef CALL_NOTIFY_ON_CANCEL
+    if (ret == 0) {
+        fingerprint_msg_t msg{};
+        msg.type = FINGERPRINT_ERROR;
+        msg.data.error = FINGERPRINT_ERROR_CANCELED;
+        notify(&msg);
+    }
+#endif
+
+    return ErrorFilter(ret);
 }
 
 Return<RequestStatus> BiometricsFingerprint::enumerate() {