Also fix Android crash when SDL_HIDAPI_DISABLED set to 1

The Java code needs the native functions to be implemented, even if
they're not surfaced via the C API, therefore, a stub version of
functions were made only to the purpose of "fill the gaps" when
SDL_HIDAPI_DISABLED set to 1.

src/hidapi/android/hid.cpp

@@ -24,6 +24,32 @@
 //
 //          This layer glues the hidapi API to Android's USB and BLE stack.
 
+
+// Common to stub version and non-stub version of functions
+#include <jni.h>
+#include <android/log.h>
+
+#define TAG "hidapi"
+
+// Have error log always available
+#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)
+
+#ifdef DEBUG
+#define LOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, TAG, __VA_ARGS__)
+#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, TAG, __VA_ARGS__)
+#else
+#define LOGV(...)
+#define LOGD(...)
+#endif
+
+#define SDL_JAVA_PREFIX                                 org_libsdl_app
+#define CONCAT1(prefix, class, function)                CONCAT2(prefix, class, function)
+#define CONCAT2(prefix, class, function)                Java_ ## prefix ## _ ## class ## _ ## function
+#define HID_DEVICE_MANAGER_JAVA_INTERFACE(function)     CONCAT1(SDL_JAVA_PREFIX, HIDDeviceManager, function)
+
+
+#if !SDL_HIDAPI_DISABLED
+
 #include "SDL_hints.h"
 #include "../../core/android/SDL_android.h"
 
@@ -46,30 +72,10 @@
 #define hid_get_indexed_string          PLATFORM_hid_get_indexed_string
 #define hid_error                       PLATFORM_hid_error
 
-#include <jni.h>
-#include <android/log.h>
 #include <pthread.h>
 #include <errno.h>	// For ETIMEDOUT and ECONNRESET
 #include <stdlib.h> // For malloc() and free()
 
-#define TAG "hidapi"
-
-// Have error log always available
-#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)
-
-#ifdef DEBUG
-#define LOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, TAG, __VA_ARGS__)
-#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, TAG, __VA_ARGS__)
-#else
-#define LOGV(...)
-#define LOGD(...)
-#endif
-
-#define SDL_JAVA_PREFIX                                 org_libsdl_app
-#define CONCAT1(prefix, class, function)                CONCAT2(prefix, class, function)
-#define CONCAT2(prefix, class, function)                Java_ ## prefix ## _ ## class ## _ ## function
-#define HID_DEVICE_MANAGER_JAVA_INTERFACE(function)     CONCAT1(SDL_JAVA_PREFIX, HIDDeviceManager, function)
-
 #include "../hidapi/hidapi.h"
 
 typedef uint32_t uint32;
@@ -1333,3 +1339,80 @@ int hid_exit(void)
 }
 
 }
+
+#else
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceRegisterCallback)(JNIEnv *env, jobject thiz);
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceReleaseCallback)(JNIEnv *env, jobject thiz);
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceConnected)(JNIEnv *env, jobject thiz, int nDeviceID, jstring sIdentifier, int nVendorId, int nProductId, jstring sSerialNumber, int nReleaseNumber, jstring sManufacturer, jstring sProduct, int nInterface, int nInterfaceClass, int nInterfaceSubclass, int nInterfaceProtocol );
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenPending)(JNIEnv *env, jobject thiz, int nDeviceID);
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenResult)(JNIEnv *env, jobject thiz, int nDeviceID, bool bOpened);
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceDisconnected)(JNIEnv *env, jobject thiz, int nDeviceID);
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceInputReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value);
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceFeatureReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value);
+
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceRegisterCallback)(JNIEnv *env, jobject thiz )
+{
+	LOGV("Stub HIDDeviceRegisterCallback()");
+}
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceReleaseCallback)(JNIEnv *env, jobject thiz)
+{
+	LOGV("Stub HIDDeviceReleaseCallback()");
+}
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceConnected)(JNIEnv *env, jobject thiz, int nDeviceID, jstring sIdentifier, int nVendorId, int nProductId, jstring sSerialNumber, int nReleaseNumber, jstring sManufacturer, jstring sProduct, int nInterface, int nInterfaceClass, int nInterfaceSubclass, int nInterfaceProtocol )
+{
+	LOGV("Stub HIDDeviceConnected() id=%d VID/PID = %.4x/%.4x, interface %d\n", nDeviceID, nVendorId, nProductId, nInterface);
+}
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenPending)(JNIEnv *env, jobject thiz, int nDeviceID)
+{
+	LOGV("Stub HIDDeviceOpenPending() id=%d\n", nDeviceID);
+}
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceOpenResult)(JNIEnv *env, jobject thiz, int nDeviceID, bool bOpened)
+{
+	LOGV("Stub HIDDeviceOpenResult() id=%d, result=%s\n", nDeviceID, bOpened ? "true" : "false");
+}
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceDisconnected)(JNIEnv *env, jobject thiz, int nDeviceID)
+{
+	LOGV("Stub HIDDeviceDisconnected() id=%d\n", nDeviceID);
+}
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceInputReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value)
+{
+	LOGV("Stub HIDDeviceInput() id=%d len=%u\n", nDeviceID, nBufSize);
+}
+
+extern "C"
+JNIEXPORT void JNICALL HID_DEVICE_MANAGER_JAVA_INTERFACE(HIDDeviceFeatureReport)(JNIEnv *env, jobject thiz, int nDeviceID, jbyteArray value)
+{
+	LOGV("Stub HIDDeviceFeatureReport() id=%d len=%u\n", nDeviceID, nBufSize);
+}
+
+#endif /* SDL_HIDAPI_DISABLED */