UsbService: Refactor USB host and device support into two separate classes
Host support is in UsbHostManager, device support is in UsbDeviceManager
Renamed UsbDeviceSettingsManager to UsbSettingsManager
Change-Id: Ib76e72957c233fa7f08f454d4d9a2a1da6368cc7
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/services/jni/com_android_server_UsbDeviceManager.cpp b/services/jni/com_android_server_UsbDeviceManager.cpp
new file mode 100644
index 0000000..6954171
--- /dev/null
+++ b/services/jni/com_android_server_UsbDeviceManager.cpp
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2010 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 "UsbDeviceManagerJNI"
+#include "utils/Log.h"
+
+#include "jni.h"
+#include "JNIHelp.h"
+#include "android_runtime/AndroidRuntime.h"
+
+#include <stdio.h>
+#include <asm/byteorder.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/usb/f_accessory.h>
+
+#define DRIVER_NAME "/dev/usb_accessory"
+
+namespace android
+{
+
+static struct parcel_file_descriptor_offsets_t
+{
+ jclass mClass;
+ jmethodID mConstructor;
+} gParcelFileDescriptorOffsets;
+
+static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
+ if (env->ExceptionCheck()) {
+ LOGE("An exception was thrown by callback '%s'.", methodName);
+ LOGE_EX(env);
+ env->ExceptionClear();
+ }
+}
+
+static void set_accessory_string(JNIEnv *env, int fd, int cmd, jobjectArray strArray, int index)
+{
+ char buffer[256];
+
+ buffer[0] = 0;
+ int length = ioctl(fd, cmd, buffer);
+ if (buffer[0]) {
+ jstring obj = env->NewStringUTF(buffer);
+ env->SetObjectArrayElement(strArray, index, obj);
+ env->DeleteLocalRef(obj);
+ }
+}
+
+
+static jobjectArray android_server_UsbDeviceManager_getAccessoryStrings(JNIEnv *env, jobject thiz)
+{
+ int fd = open(DRIVER_NAME, O_RDWR);
+ if (fd < 0) {
+ LOGE("could not open %s", DRIVER_NAME);
+ return NULL;
+ }
+ jclass stringClass = env->FindClass("java/lang/String");
+ jobjectArray strArray = env->NewObjectArray(6, stringClass, NULL);
+ if (!strArray) goto out;
+ set_accessory_string(env, fd, ACCESSORY_GET_STRING_MANUFACTURER, strArray, 0);
+ set_accessory_string(env, fd, ACCESSORY_GET_STRING_MODEL, strArray, 1);
+ set_accessory_string(env, fd, ACCESSORY_GET_STRING_DESCRIPTION, strArray, 2);
+ set_accessory_string(env, fd, ACCESSORY_GET_STRING_VERSION, strArray, 3);
+ set_accessory_string(env, fd, ACCESSORY_GET_STRING_URI, strArray, 4);
+ set_accessory_string(env, fd, ACCESSORY_GET_STRING_SERIAL, strArray, 5);
+
+out:
+ close(fd);
+ return strArray;
+}
+
+static jobject android_server_UsbDeviceManager_openAccessory(JNIEnv *env, jobject thiz)
+{
+ int fd = open(DRIVER_NAME, O_RDWR);
+ if (fd < 0) {
+ LOGE("could not open %s", DRIVER_NAME);
+ return NULL;
+ }
+ jobject fileDescriptor = jniCreateFileDescriptor(env, fd);
+ if (fileDescriptor == NULL) {
+ return NULL;
+ }
+ return env->NewObject(gParcelFileDescriptorOffsets.mClass,
+ gParcelFileDescriptorOffsets.mConstructor, fileDescriptor);
+}
+
+static JNINativeMethod method_table[] = {
+ { "nativeGetAccessoryStrings", "()[Ljava/lang/String;",
+ (void*)android_server_UsbDeviceManager_getAccessoryStrings },
+ { "nativeOpenAccessory", "()Landroid/os/ParcelFileDescriptor;",
+ (void*)android_server_UsbDeviceManager_openAccessory },
+};
+
+int register_android_server_UsbDeviceManager(JNIEnv *env)
+{
+ jclass clazz = env->FindClass("com/android/server/usb/UsbDeviceManager");
+ if (clazz == NULL) {
+ LOGE("Can't find com/android/server/usb/UsbDeviceManager");
+ return -1;
+ }
+
+ clazz = env->FindClass("android/os/ParcelFileDescriptor");
+ LOG_FATAL_IF(clazz == NULL, "Unable to find class android.os.ParcelFileDescriptor");
+ gParcelFileDescriptorOffsets.mClass = (jclass) env->NewGlobalRef(clazz);
+ gParcelFileDescriptorOffsets.mConstructor = env->GetMethodID(clazz, "<init>", "(Ljava/io/FileDescriptor;)V");
+ LOG_FATAL_IF(gParcelFileDescriptorOffsets.mConstructor == NULL,
+ "Unable to find constructor for android.os.ParcelFileDescriptor");
+
+ return jniRegisterNativeMethods(env, "com/android/server/usb/UsbDeviceManager",
+ method_table, NELEM(method_table));
+}
+
+};