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
android_hardware_UsbDevice_get_device_id(JNIEnv * env,jobject clazz,jstring name)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
android_hardware_UsbDevice_get_device_name(JNIEnv * env,jobject clazz,jint id)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
register_android_hardware_UsbDevice(JNIEnv * env)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