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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "device/usb/usb_device_android.h"
#include "base/android/build_info.h"
#include "base/android/jni_string.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/thread_task_runner_handle.h"
#include "device/usb/usb_configuration_android.h"
#include "device/usb/usb_device_handle.h"
#include "device/usb/usb_interface_android.h"
#include "jni/ChromeUsbDevice_jni.h"
using base::android::AttachCurrentThread;
using base::android::ConvertJavaStringToUTF16;
using base::android::JavaRef;
using base::android::ScopedJavaLocalRef;
namespace device {
// static
bool UsbDeviceAndroid::RegisterJNI(JNIEnv* env) {
return RegisterNativesImpl(env); // Generated in ChromeUsbDevice_jni.h
}
// static
scoped_refptr<UsbDeviceAndroid> UsbDeviceAndroid::Create(
JNIEnv* env,
const JavaRef<jobject>& usb_device) {
ScopedJavaLocalRef<jobject> wrapper =
Java_ChromeUsbDevice_create(env, usb_device.obj());
uint16_t vendor_id = Java_ChromeUsbDevice_getVendorId(env, wrapper.obj());
uint16_t product_id = Java_ChromeUsbDevice_getProductId(env, wrapper.obj());
ScopedJavaLocalRef<jstring> manufacturer_string =
Java_ChromeUsbDevice_getManufacturerName(env, wrapper.obj());
ScopedJavaLocalRef<jstring> product_string =
Java_ChromeUsbDevice_getProductName(env, wrapper.obj());
ScopedJavaLocalRef<jstring> serial_number =
Java_ChromeUsbDevice_getSerialNumber(env, wrapper.obj());
return make_scoped_refptr(new UsbDeviceAndroid(
env, vendor_id, product_id,
ConvertJavaStringToUTF16(env, manufacturer_string),
ConvertJavaStringToUTF16(env, product_string),
ConvertJavaStringToUTF16(env, serial_number), wrapper));
}
void UsbDeviceAndroid::Open(const OpenCallback& callback) {
base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
base::Bind(callback, nullptr));
}
const UsbConfigDescriptor* UsbDeviceAndroid::GetActiveConfiguration() {
return nullptr;
}
UsbDeviceAndroid::UsbDeviceAndroid(JNIEnv* env,
uint16_t vendor_id,
uint16_t product_id,
const base::string16& manufacturer_string,
const base::string16& product_string,
const base::string16& serial_number,
const JavaRef<jobject>& wrapper)
: UsbDevice(vendor_id,
product_id,
manufacturer_string,
product_string,
serial_number) {
j_object_.Reset(wrapper);
if (base::android::BuildInfo::GetInstance()->sdk_int() >= 21) {
ScopedJavaLocalRef<jobjectArray> configurations =
Java_ChromeUsbDevice_getConfigurations(env, j_object_.obj());
jsize count = env->GetArrayLength(configurations.obj());
configurations_.reserve(count);
for (jsize i = 0; i < count; ++i) {
ScopedJavaLocalRef<jobject> config(
env, env->GetObjectArrayElement(configurations.obj(), i));
configurations_.push_back(UsbConfigurationAndroid::Convert(env, config));
}
} else {
// Pre-lollipop only the first configuration was supported. Build a basic
// configuration out of the available interfaces.
UsbConfigDescriptor config(1, // Configuration value, reasonable guess.
false, // Self powered, arbitrary default.
false, // Remote wakeup, rbitrary default.
0); // Maximum power, aitrary default.
ScopedJavaLocalRef<jobjectArray> interfaces =
Java_ChromeUsbDevice_getInterfaces(env, wrapper.obj());
jsize count = env->GetArrayLength(interfaces.obj());
config.interfaces.reserve(count);
for (jsize i = 0; i < count; ++i) {
ScopedJavaLocalRef<jobject> interface(
env, env->GetObjectArrayElement(interfaces.obj(), i));
config.interfaces.push_back(UsbInterfaceAndroid::Convert(env, interface));
}
configurations_.push_back(config);
}
}
UsbDeviceAndroid::~UsbDeviceAndroid() {}
} // namespace device
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