Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 1 | /* |
Mike Lockwood | 9182d3c | 2011-02-15 09:50:22 -0500 | [diff] [blame] | 2 | * Copyright (C) 2010 The Android Open Source Project |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 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 | |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 17 | #define LOG_TAG "UsbHostManagerJNI" |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 18 | #include "utils/Log.h" |
| 19 | |
| 20 | #include "jni.h" |
| 21 | #include "JNIHelp.h" |
| 22 | #include "android_runtime/AndroidRuntime.h" |
| 23 | #include "utils/Vector.h" |
| 24 | |
| 25 | #include <usbhost/usbhost.h> |
| 26 | |
| 27 | #include <stdio.h> |
| 28 | #include <asm/byteorder.h> |
Mike Lockwood | 9182d3c | 2011-02-15 09:50:22 -0500 | [diff] [blame] | 29 | #include <sys/types.h> |
| 30 | #include <sys/stat.h> |
| 31 | #include <fcntl.h> |
| 32 | #include <sys/ioctl.h> |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 33 | |
| 34 | namespace android |
| 35 | { |
| 36 | |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 37 | static struct parcel_file_descriptor_offsets_t |
| 38 | { |
| 39 | jclass mClass; |
| 40 | jmethodID mConstructor; |
| 41 | } gParcelFileDescriptorOffsets; |
| 42 | |
| 43 | static jmethodID method_usbDeviceAdded; |
| 44 | static jmethodID method_usbDeviceRemoved; |
| 45 | |
| 46 | static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) { |
| 47 | if (env->ExceptionCheck()) { |
| 48 | LOGE("An exception was thrown by callback '%s'.", methodName); |
| 49 | LOGE_EX(env); |
| 50 | env->ExceptionClear(); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | static int usb_device_added(const char *devname, void* client_data) { |
| 55 | struct usb_descriptor_header* desc; |
| 56 | struct usb_descriptor_iter iter; |
| 57 | |
| 58 | struct usb_device *device = usb_device_open(devname); |
| 59 | if (!device) { |
| 60 | LOGE("usb_device_open failed\n"); |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| 65 | jobject thiz = (jobject)client_data; |
| 66 | Vector<int> interfaceValues; |
| 67 | Vector<int> endpointValues; |
| 68 | const usb_device_descriptor* deviceDesc = usb_device_get_device_descriptor(device); |
| 69 | |
| 70 | uint16_t vendorId = usb_device_get_vendor_id(device); |
| 71 | uint16_t productId = usb_device_get_product_id(device); |
| 72 | uint8_t deviceClass = deviceDesc->bDeviceClass; |
| 73 | uint8_t deviceSubClass = deviceDesc->bDeviceSubClass; |
| 74 | uint8_t protocol = deviceDesc->bDeviceProtocol; |
| 75 | |
| 76 | usb_descriptor_iter_init(device, &iter); |
| 77 | |
| 78 | while ((desc = usb_descriptor_iter_next(&iter)) != NULL) { |
| 79 | if (desc->bDescriptorType == USB_DT_INTERFACE) { |
| 80 | struct usb_interface_descriptor *interface = (struct usb_interface_descriptor *)desc; |
| 81 | |
| 82 | // push class, subclass, protocol and number of endpoints into interfaceValues vector |
| 83 | interfaceValues.add(interface->bInterfaceNumber); |
| 84 | interfaceValues.add(interface->bInterfaceClass); |
| 85 | interfaceValues.add(interface->bInterfaceSubClass); |
| 86 | interfaceValues.add(interface->bInterfaceProtocol); |
| 87 | interfaceValues.add(interface->bNumEndpoints); |
| 88 | } else if (desc->bDescriptorType == USB_DT_ENDPOINT) { |
| 89 | struct usb_endpoint_descriptor *endpoint = (struct usb_endpoint_descriptor *)desc; |
| 90 | |
| 91 | // push address, attributes, max packet size and interval into endpointValues vector |
| 92 | endpointValues.add(endpoint->bEndpointAddress); |
| 93 | endpointValues.add(endpoint->bmAttributes); |
| 94 | endpointValues.add(__le16_to_cpu(endpoint->wMaxPacketSize)); |
| 95 | endpointValues.add(endpoint->bInterval); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | usb_device_close(device); |
| 100 | |
| 101 | // handle generic device notification |
| 102 | int length = interfaceValues.size(); |
| 103 | jintArray interfaceArray = env->NewIntArray(length); |
| 104 | env->SetIntArrayRegion(interfaceArray, 0, length, interfaceValues.array()); |
| 105 | |
| 106 | length = endpointValues.size(); |
| 107 | jintArray endpointArray = env->NewIntArray(length); |
| 108 | env->SetIntArrayRegion(endpointArray, 0, length, endpointValues.array()); |
| 109 | |
Mike Lockwood | 8f8c602 | 2011-03-27 19:35:43 -0700 | [diff] [blame] | 110 | jstring deviceName = env->NewStringUTF(devname); |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 111 | env->CallVoidMethod(thiz, method_usbDeviceAdded, |
Mike Lockwood | 8f8c602 | 2011-03-27 19:35:43 -0700 | [diff] [blame] | 112 | deviceName, vendorId, productId, deviceClass, |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 113 | deviceSubClass, protocol, interfaceArray, endpointArray); |
Mike Lockwood | 8f8c602 | 2011-03-27 19:35:43 -0700 | [diff] [blame] | 114 | |
| 115 | env->DeleteLocalRef(interfaceArray); |
| 116 | env->DeleteLocalRef(endpointArray); |
| 117 | env->DeleteLocalRef(deviceName); |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 118 | checkAndClearExceptionFromCallback(env, __FUNCTION__); |
| 119 | |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | static int usb_device_removed(const char *devname, void* client_data) { |
| 124 | JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| 125 | jobject thiz = (jobject)client_data; |
| 126 | |
Mike Lockwood | 8f8c602 | 2011-03-27 19:35:43 -0700 | [diff] [blame] | 127 | jstring deviceName = env->NewStringUTF(devname); |
Mike Lockwood | b3174c4 | 2011-06-09 14:48:11 -0400 | [diff] [blame] | 128 | env->CallVoidMethod(thiz, method_usbDeviceRemoved, deviceName); |
Mike Lockwood | 8f8c602 | 2011-03-27 19:35:43 -0700 | [diff] [blame] | 129 | env->DeleteLocalRef(deviceName); |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 130 | checkAndClearExceptionFromCallback(env, __FUNCTION__); |
| 131 | return 0; |
| 132 | } |
| 133 | |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 134 | static void android_server_UsbHostManager_monitorUsbHostBus(JNIEnv *env, jobject thiz) |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 135 | { |
| 136 | struct usb_host_context* context = usb_host_init(); |
| 137 | if (!context) { |
| 138 | LOGE("usb_host_init failed"); |
| 139 | return; |
| 140 | } |
| 141 | // this will never return so it is safe to pass thiz directly |
| 142 | usb_host_run(context, usb_device_added, usb_device_removed, NULL, (void *)thiz); |
| 143 | } |
| 144 | |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 145 | static jobject android_server_UsbHostManager_openDevice(JNIEnv *env, jobject thiz, jstring deviceName) |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 146 | { |
| 147 | const char *deviceNameStr = env->GetStringUTFChars(deviceName, NULL); |
| 148 | struct usb_device* device = usb_device_open(deviceNameStr); |
| 149 | env->ReleaseStringUTFChars(deviceName, deviceNameStr); |
| 150 | |
| 151 | if (!device) |
| 152 | return NULL; |
| 153 | |
| 154 | int fd = usb_device_get_fd(device); |
| 155 | if (fd < 0) |
| 156 | return NULL; |
| 157 | int newFD = dup(fd); |
| 158 | usb_device_close(device); |
| 159 | |
Elliott Hughes | a3804cf | 2011-04-11 16:50:19 -0700 | [diff] [blame] | 160 | jobject fileDescriptor = jniCreateFileDescriptor(env, newFD); |
| 161 | if (fileDescriptor == NULL) { |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 162 | return NULL; |
| 163 | } |
| 164 | return env->NewObject(gParcelFileDescriptorOffsets.mClass, |
| 165 | gParcelFileDescriptorOffsets.mConstructor, fileDescriptor); |
| 166 | } |
| 167 | |
| 168 | static JNINativeMethod method_table[] = { |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 169 | { "monitorUsbHostBus", "()V", (void*)android_server_UsbHostManager_monitorUsbHostBus }, |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 170 | { "nativeOpenDevice", "(Ljava/lang/String;)Landroid/os/ParcelFileDescriptor;", |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 171 | (void*)android_server_UsbHostManager_openDevice }, |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 172 | }; |
| 173 | |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 174 | int register_android_server_UsbHostManager(JNIEnv *env) |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 175 | { |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 176 | jclass clazz = env->FindClass("com/android/server/usb/UsbHostManager"); |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 177 | if (clazz == NULL) { |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 178 | LOGE("Can't find com/android/server/usb/UsbHostManager"); |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 179 | return -1; |
| 180 | } |
| 181 | method_usbDeviceAdded = env->GetMethodID(clazz, "usbDeviceAdded", "(Ljava/lang/String;IIIII[I[I)V"); |
| 182 | if (method_usbDeviceAdded == NULL) { |
| 183 | LOGE("Can't find usbDeviceAdded"); |
| 184 | return -1; |
| 185 | } |
| 186 | method_usbDeviceRemoved = env->GetMethodID(clazz, "usbDeviceRemoved", "(Ljava/lang/String;)V"); |
| 187 | if (method_usbDeviceRemoved == NULL) { |
| 188 | LOGE("Can't find usbDeviceRemoved"); |
| 189 | return -1; |
| 190 | } |
| 191 | |
Brian Carlstrom | 46e18c11 | 2011-04-05 22:44:45 -0700 | [diff] [blame] | 192 | clazz = env->FindClass("android/os/ParcelFileDescriptor"); |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 193 | LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.ParcelFileDescriptor"); |
| 194 | gParcelFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz); |
| 195 | gParcelFileDescriptorOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "(Ljava/io/FileDescriptor;)V"); |
| 196 | LOG_FATAL_IF(gParcelFileDescriptorOffsets.mConstructor == NULL, |
| 197 | "Unable to find constructor for android.os.ParcelFileDescriptor"); |
| 198 | |
Mike Lockwood | 46d0adf | 2011-05-26 10:27:39 -0400 | [diff] [blame] | 199 | return jniRegisterNativeMethods(env, "com/android/server/usb/UsbHostManager", |
Mike Lockwood | e7d511e | 2010-12-30 13:39:37 -0500 | [diff] [blame] | 200 | method_table, NELEM(method_table)); |
| 201 | } |
| 202 | |
| 203 | }; |