1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "UsbDeviceJNI" 18 19 #include "utils/Log.h" 20 21 #include "jni.h" 22 #include <nativehelper/JNIHelp.h> 23 #include "core_jni_helpers.h" 24 25 #include <usbhost/usbhost.h> 26 27 using namespace android; 28 29 static jint 30 android_hardware_UsbDevice_get_device_id(JNIEnv *env, jobject clazz, jstring name) 31 { 32 const char *nameStr = env->GetStringUTFChars(name, NULL); 33 int id = usb_device_get_unique_id_from_name(nameStr); 34 env->ReleaseStringUTFChars(name, nameStr); 35 return id; 36 } 37 38 static jstring 39 android_hardware_UsbDevice_get_device_name(JNIEnv *env, jobject clazz, jint id) 40 { 41 char* name = usb_device_get_name_from_unique_id(id); 42 jstring result = env->NewStringUTF(name); 43 free(name); 44 return result; 45 } 46 47 static const JNINativeMethod method_table[] = { 48 // static methods 49 { "native_get_device_id", "(Ljava/lang/String;)I", 50 (void*)android_hardware_UsbDevice_get_device_id }, 51 { "native_get_device_name", "(I)Ljava/lang/String;", 52 (void*)android_hardware_UsbDevice_get_device_name }, 53 }; 54 55 int register_android_hardware_UsbDevice(JNIEnv *env) 56 { 57 return RegisterMethodsOrDie(env, "android/hardware/usb/UsbDevice", 58 method_table, NELEM(method_table)); 59 } 60
