blob: 9917bcb45c0a10c5f632b2bd2330e8b8b490131c [file] [log] [blame]
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "UsbHostManagerJNI"
#include <nativehelper/JNIHelp.h>
#include <stdlib.h>
#include <usbhost/usbhost.h>
#include <usbhost/usbhost_jni.h>
#include "jni.h"
#include "utils/Log.h"
static const int USB_CONTROL_TRANSFER_TIMEOUT_MS = 200;
// com.android.server.usb.descriptors
extern "C" {
jbyteArray JNICALL Java_com_android_server_usb_descriptors_UsbDescriptorParser_getRawDescriptors_1native(
JNIEnv* env, jobject thiz, jstring deviceAddr) {
const char *deviceAddrStr = env->GetStringUTFChars(deviceAddr, NULL);
struct usb_device* device = usb_device_open(deviceAddrStr);
env->ReleaseStringUTFChars(deviceAddr, deviceAddrStr);
if (!device) {
ALOGE("usb_device_open failed");
return NULL;
}
int fd = usb_device_get_fd(device);
jbyteArray descriptors = usb_jni_read_descriptors(env, fd);
usb_device_close(device);
return descriptors;
}
jstring JNICALL Java_com_android_server_usb_descriptors_UsbDescriptorParser_getDescriptorString_1native(
JNIEnv* env, jobject thiz, jstring deviceAddr, jint stringId) {
const char *deviceAddrStr = env->GetStringUTFChars(deviceAddr, NULL);
struct usb_device* device = usb_device_open(deviceAddrStr);
env->ReleaseStringUTFChars(deviceAddr, deviceAddrStr);
if (!device) {
ALOGE("usb_device_open failed");
return NULL;
}
int fd = usb_device_get_fd(device);
if (fd < 0) {
ALOGE("usb_device_get_fd failed");
usb_device_close(device);
return NULL;
}
// Get Raw UCS2 Bytes
jbyte* byteBuffer = NULL;
size_t numUSC2Bytes = 0;
int retVal =
usb_device_get_string_ucs2(device, stringId,
USB_CONTROL_TRANSFER_TIMEOUT_MS,
(void**)&byteBuffer, &numUSC2Bytes);
jstring j_str = NULL;
if (retVal == 0) {
j_str = env->NewString((jchar*)byteBuffer, numUSC2Bytes/2);
free(byteBuffer);
}
usb_device_close(device);
return j_str;
}
} // extern "C"