core/jni/server/com_android_server_KeyInputQueue.cpp - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2007 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 "Input"

 #include "jni.h"
 #include "JNIHelp.h"
 #include <utils/misc.h>
 #include <utils/Log.h>

 #include <ui/EventHub.h>
 #include <utils/threads.h>

 #include <stdio.h>

 namespace android {

 // ----------------------------------------------------------------------------

 static struct input_offsets_t
 {
     jfieldID mMinValue;
     jfieldID mMaxValue;
     jfieldID mFlat;
     jfieldID mFuzz;

     jfieldID mDeviceId;
     jfieldID mType;
     jfieldID mScancode;
     jfieldID mKeycode;
     jfieldID mFlags;
     jfieldID mValue;
     jfieldID mWhen;
 } gInputOffsets;

 // ----------------------------------------------------------------------------

 static Mutex gLock;
 static sp<EventHub> gHub;

 static jboolean
 android_server_KeyInputQueue_readEvent(JNIEnv* env, jobject clazz,
                                           jobject event)
 {
     gLock.lock();
     sp<EventHub> hub = gHub;
     if (hub == NULL) {
         hub = new EventHub;
         gHub = hub;
     }
     gLock.unlock();

     int32_t deviceId;
     int32_t type;
     int32_t scancode, keycode;
     uint32_t flags;
     int32_t value;
     nsecs_t when;
     bool res = hub->getEvent(&deviceId, &type, &scancode, &keycode,
             &flags, &value, &when);

     env->SetIntField(event, gInputOffsets.mDeviceId, (jint)deviceId);
     env->SetIntField(event, gInputOffsets.mType, (jint)type);
     env->SetIntField(event, gInputOffsets.mScancode, (jint)scancode);
     env->SetIntField(event, gInputOffsets.mKeycode, (jint)keycode);
     env->SetIntField(event, gInputOffsets.mFlags, (jint)flags);
     env->SetIntField(event, gInputOffsets.mValue, value);
     env->SetLongField(event, gInputOffsets.mWhen,
                         (jlong)(nanoseconds_to_milliseconds(when)));

     return res;
 }

 static jint
 android_server_KeyInputQueue_getDeviceClasses(JNIEnv* env, jobject clazz,
                                               jint deviceId)
 {
     jint classes = 0;
     gLock.lock();
     if (gHub != NULL) classes = gHub->getDeviceClasses(deviceId);
     gLock.unlock();
     return classes;
 }

 static jstring
 android_server_KeyInputQueue_getDeviceName(JNIEnv* env, jobject clazz,
                                               jint deviceId)
 {
     String8 name;
     gLock.lock();
     if (gHub != NULL) name = gHub->getDeviceName(deviceId);
     gLock.unlock();

     if (name.size() > 0) {
         return env->NewStringUTF(name.string());
     }
     return NULL;
 }

 static jboolean
 android_server_KeyInputQueue_getAbsoluteInfo(JNIEnv* env, jobject clazz,
                                              jint deviceId, jint axis,
                                              jobject info)
 {
     int32_t minValue, maxValue, flat, fuzz;
     int res = -1;
     gLock.lock();
     if (gHub != NULL) {
         res = gHub->getAbsoluteInfo(deviceId, axis,
                 &minValue, &maxValue, &flat, &fuzz);
     }
     gLock.unlock();

     if (res < 0) return JNI_FALSE;

     env->SetIntField(info, gInputOffsets.mMinValue, (jint)minValue);
     env->SetIntField(info, gInputOffsets.mMaxValue, (jint)maxValue);
     env->SetIntField(info, gInputOffsets.mFlat, (jint)flat);
     env->SetIntField(info, gInputOffsets.mFuzz, (jint)fuzz);
     return JNI_TRUE;
 }

 static jint
 android_server_KeyInputQueue_getSwitchState(JNIEnv* env, jobject clazz,
                                            jint sw)
 {
     jint st = -1;
     gLock.lock();
     if (gHub != NULL) st = gHub->getSwitchState(sw);
     gLock.unlock();

     return st;
 }

 static jint
 android_server_KeyInputQueue_getSwitchStateDevice(JNIEnv* env, jobject clazz,
                                             jint deviceId, jint sw)
 {
     jint st = -1;
     gLock.lock();
     if (gHub != NULL) st = gHub->getSwitchState(deviceId, sw);
     gLock.unlock();

     return st;
 }

 static jint
 android_server_KeyInputQueue_getScancodeState(JNIEnv* env, jobject clazz,
                                            jint sw)
 {
     jint st = -1;
     gLock.lock();
     if (gHub != NULL) st = gHub->getScancodeState(sw);
     gLock.unlock();

     return st;
 }

 static jint
 android_server_KeyInputQueue_getScancodeStateDevice(JNIEnv* env, jobject clazz,
                                             jint deviceId, jint sw)
 {
     jint st = -1;
     gLock.lock();
     if (gHub != NULL) st = gHub->getScancodeState(deviceId, sw);
     gLock.unlock();

     return st;
 }

 static jint
 android_server_KeyInputQueue_getKeycodeState(JNIEnv* env, jobject clazz,
                                            jint sw)
 {
     jint st = -1;
     gLock.lock();
     if (gHub != NULL) st = gHub->getKeycodeState(sw);
     gLock.unlock();

     return st;
 }

 static jint
 android_server_KeyInputQueue_getKeycodeStateDevice(JNIEnv* env, jobject clazz,
                                             jint deviceId, jint sw)
 {
     jint st = -1;
     gLock.lock();
     if (gHub != NULL) st = gHub->getKeycodeState(deviceId, sw);
     gLock.unlock();

     return st;
 }

 static jboolean
 android_server_KeyInputQueue_hasKeys(JNIEnv* env, jobject clazz,
                                      jintArray keyCodes, jbooleanArray outFlags)
 {
     jboolean ret = JNI_FALSE;

     int32_t* codes = env->GetIntArrayElements(keyCodes, NULL);
     uint8_t* flags = env->GetBooleanArrayElements(outFlags, NULL);
     size_t numCodes = env->GetArrayLength(keyCodes);
     if (numCodes == env->GetArrayLength(outFlags)) {
         gLock.lock();
         if (gHub != NULL) ret = gHub->hasKeys(numCodes, codes, flags);
         gLock.unlock();
     }

     env->ReleaseBooleanArrayElements(outFlags, flags, 0);
     env->ReleaseIntArrayElements(keyCodes, codes, 0);
     return ret;
 }

 // ----------------------------------------------------------------------------

 /*
  * JNI registration.
  */
 static JNINativeMethod gInputMethods[] = {
     /* name, signature, funcPtr */
     { "readEvent",       "(Landroid/view/RawInputEvent;)Z",
             (void*) android_server_KeyInputQueue_readEvent },
     { "getDeviceClasses", "(I)I",
         (void*) android_server_KeyInputQueue_getDeviceClasses },
     { "getDeviceName", "(I)Ljava/lang/String;",
         (void*) android_server_KeyInputQueue_getDeviceName },
     { "getAbsoluteInfo", "(IILcom/android/server/InputDevice$AbsoluteInfo;)Z",
         (void*) android_server_KeyInputQueue_getAbsoluteInfo },
     { "getSwitchState", "(I)I",
         (void*) android_server_KeyInputQueue_getSwitchState },
     { "getSwitchState", "(II)I",
         (void*) android_server_KeyInputQueue_getSwitchStateDevice },
     { "getScancodeState", "(I)I",
         (void*) android_server_KeyInputQueue_getScancodeState },
     { "getScancodeState", "(II)I",
         (void*) android_server_KeyInputQueue_getScancodeStateDevice },
     { "getKeycodeState", "(I)I",
         (void*) android_server_KeyInputQueue_getKeycodeState },
     { "getKeycodeState", "(II)I",
         (void*) android_server_KeyInputQueue_getKeycodeStateDevice },
     { "hasKeys", "([I[Z)Z",
         (void*) android_server_KeyInputQueue_hasKeys },
 };

 int register_android_server_KeyInputQueue(JNIEnv* env)
 {
     jclass input = env->FindClass("com/android/server/KeyInputQueue");
     LOG_FATAL_IF(input == NULL, "Unable to find class com/android/server/KeyInputQueue");
     int res = jniRegisterNativeMethods(env, "com/android/server/KeyInputQueue",
                                         gInputMethods, NELEM(gInputMethods));

     jclass absoluteInfo = env->FindClass("com/android/server/InputDevice$AbsoluteInfo");
     LOG_FATAL_IF(absoluteInfo == NULL, "Unable to find class com/android/server/InputDevice$AbsoluteInfo");

     gInputOffsets.mMinValue
         = env->GetFieldID(absoluteInfo, "minValue", "I");
     LOG_FATAL_IF(gInputOffsets.mMinValue == NULL, "Unable to find InputDevice.AbsoluteInfo.minValue");

     gInputOffsets.mMaxValue
         = env->GetFieldID(absoluteInfo, "maxValue", "I");
     LOG_FATAL_IF(gInputOffsets.mMaxValue == NULL, "Unable to find InputDevice.AbsoluteInfo.maxValue");

     gInputOffsets.mFlat
         = env->GetFieldID(absoluteInfo, "flat", "I");
     LOG_FATAL_IF(gInputOffsets.mFlat == NULL, "Unable to find InputDevice.AbsoluteInfo.flat");

     gInputOffsets.mFuzz
         = env->GetFieldID(absoluteInfo, "fuzz", "I");
     LOG_FATAL_IF(gInputOffsets.mFuzz == NULL, "Unable to find InputDevice.AbsoluteInfo.fuzz");

     jclass inputEvent = env->FindClass("android/view/RawInputEvent");
     LOG_FATAL_IF(inputEvent == NULL, "Unable to find class android/view/RawInputEvent");

     gInputOffsets.mDeviceId
         = env->GetFieldID(inputEvent, "deviceId", "I");
     LOG_FATAL_IF(gInputOffsets.mDeviceId == NULL, "Unable to find RawInputEvent.deviceId");

     gInputOffsets.mType
         = env->GetFieldID(inputEvent, "type", "I");
     LOG_FATAL_IF(gInputOffsets.mType == NULL, "Unable to find RawInputEvent.type");

     gInputOffsets.mScancode
         = env->GetFieldID(inputEvent, "scancode", "I");
     LOG_FATAL_IF(gInputOffsets.mScancode == NULL, "Unable to find RawInputEvent.scancode");

     gInputOffsets.mKeycode
         = env->GetFieldID(inputEvent, "keycode", "I");
     LOG_FATAL_IF(gInputOffsets.mKeycode == NULL, "Unable to find RawInputEvent.keycode");

     gInputOffsets.mFlags
         = env->GetFieldID(inputEvent, "flags", "I");
     LOG_FATAL_IF(gInputOffsets.mFlags == NULL, "Unable to find RawInputEvent.flags");

     gInputOffsets.mValue
         = env->GetFieldID(inputEvent, "value", "I");
     LOG_FATAL_IF(gInputOffsets.mValue == NULL, "Unable to find RawInputEvent.value");

     gInputOffsets.mWhen
         = env->GetFieldID(inputEvent, "when", "J");
     LOG_FATAL_IF(gInputOffsets.mWhen == NULL, "Unable to find RawInputEvent.when");

     return res;
 }

 }; // namespace android
	/*
	* Copyright (C) 2007 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 "Input"

	#include "jni.h"
	#include "JNIHelp.h"
	#include <utils/misc.h>
	#include <utils/Log.h>

	#include <ui/EventHub.h>
	#include <utils/threads.h>

	#include <stdio.h>

	namespace android {

	// ----------------------------------------------------------------------------

	static struct input_offsets_t
	{
	jfieldID mMinValue;
	jfieldID mMaxValue;
	jfieldID mFlat;
	jfieldID mFuzz;

	jfieldID mDeviceId;
	jfieldID mType;
	jfieldID mScancode;
	jfieldID mKeycode;
	jfieldID mFlags;
	jfieldID mValue;
	jfieldID mWhen;
	} gInputOffsets;

	// ----------------------------------------------------------------------------

	static Mutex gLock;
	static sp<EventHub> gHub;

	static jboolean
	android_server_KeyInputQueue_readEvent(JNIEnv* env, jobject clazz,
	jobject event)
	{
	gLock.lock();
	sp<EventHub> hub = gHub;
	if (hub == NULL) {
	hub = new EventHub;
	gHub = hub;
	}
	gLock.unlock();

	int32_t deviceId;
	int32_t type;
	int32_t scancode, keycode;
	uint32_t flags;
	int32_t value;
	nsecs_t when;
	bool res = hub->getEvent(&deviceId, &type, &scancode, &keycode,
	&flags, &value, &when);

	env->SetIntField(event, gInputOffsets.mDeviceId, (jint)deviceId);
	env->SetIntField(event, gInputOffsets.mType, (jint)type);
	env->SetIntField(event, gInputOffsets.mScancode, (jint)scancode);
	env->SetIntField(event, gInputOffsets.mKeycode, (jint)keycode);
	env->SetIntField(event, gInputOffsets.mFlags, (jint)flags);
	env->SetIntField(event, gInputOffsets.mValue, value);
	env->SetLongField(event, gInputOffsets.mWhen,
	(jlong)(nanoseconds_to_milliseconds(when)));

	return res;
	}

	static jint
	android_server_KeyInputQueue_getDeviceClasses(JNIEnv* env, jobject clazz,
	jint deviceId)
	{
	jint classes = 0;
	gLock.lock();
	if (gHub != NULL) classes = gHub->getDeviceClasses(deviceId);
	gLock.unlock();
	return classes;
	}

	static jstring
	android_server_KeyInputQueue_getDeviceName(JNIEnv* env, jobject clazz,
	jint deviceId)
	{
	String8 name;
	gLock.lock();
	if (gHub != NULL) name = gHub->getDeviceName(deviceId);
	gLock.unlock();

	if (name.size() > 0) {
	return env->NewStringUTF(name.string());
	}
	return NULL;
	}

	static jboolean
	android_server_KeyInputQueue_getAbsoluteInfo(JNIEnv* env, jobject clazz,
	jint deviceId, jint axis,
	jobject info)
	{
	int32_t minValue, maxValue, flat, fuzz;
	int res = -1;
	gLock.lock();
	if (gHub != NULL) {
	res = gHub->getAbsoluteInfo(deviceId, axis,
	&minValue, &maxValue, &flat, &fuzz);
	}
	gLock.unlock();

	if (res < 0) return JNI_FALSE;

	env->SetIntField(info, gInputOffsets.mMinValue, (jint)minValue);
	env->SetIntField(info, gInputOffsets.mMaxValue, (jint)maxValue);
	env->SetIntField(info, gInputOffsets.mFlat, (jint)flat);
	env->SetIntField(info, gInputOffsets.mFuzz, (jint)fuzz);
	return JNI_TRUE;
	}

	static jint
	android_server_KeyInputQueue_getSwitchState(JNIEnv* env, jobject clazz,
	jint sw)
	{
	jint st = -1;
	gLock.lock();
	if (gHub != NULL) st = gHub->getSwitchState(sw);
	gLock.unlock();

	return st;
	}

	static jint
	android_server_KeyInputQueue_getSwitchStateDevice(JNIEnv* env, jobject clazz,
	jint deviceId, jint sw)
	{
	jint st = -1;
	gLock.lock();
	if (gHub != NULL) st = gHub->getSwitchState(deviceId, sw);
	gLock.unlock();

	return st;
	}

	static jint
	android_server_KeyInputQueue_getScancodeState(JNIEnv* env, jobject clazz,
	jint sw)
	{
	jint st = -1;
	gLock.lock();
	if (gHub != NULL) st = gHub->getScancodeState(sw);
	gLock.unlock();

	return st;
	}

	static jint
	android_server_KeyInputQueue_getScancodeStateDevice(JNIEnv* env, jobject clazz,
	jint deviceId, jint sw)
	{
	jint st = -1;
	gLock.lock();
	if (gHub != NULL) st = gHub->getScancodeState(deviceId, sw);
	gLock.unlock();

	return st;
	}

	static jint
	android_server_KeyInputQueue_getKeycodeState(JNIEnv* env, jobject clazz,
	jint sw)
	{
	jint st = -1;
	gLock.lock();
	if (gHub != NULL) st = gHub->getKeycodeState(sw);
	gLock.unlock();

	return st;
	}

	static jint
	android_server_KeyInputQueue_getKeycodeStateDevice(JNIEnv* env, jobject clazz,
	jint deviceId, jint sw)
	{
	jint st = -1;
	gLock.lock();
	if (gHub != NULL) st = gHub->getKeycodeState(deviceId, sw);
	gLock.unlock();

	return st;
	}

	static jboolean
	android_server_KeyInputQueue_hasKeys(JNIEnv* env, jobject clazz,
	jintArray keyCodes, jbooleanArray outFlags)
	{
	jboolean ret = JNI_FALSE;

	int32_t* codes = env->GetIntArrayElements(keyCodes, NULL);
	uint8_t* flags = env->GetBooleanArrayElements(outFlags, NULL);
	size_t numCodes = env->GetArrayLength(keyCodes);
	if (numCodes == env->GetArrayLength(outFlags)) {
	gLock.lock();
	if (gHub != NULL) ret = gHub->hasKeys(numCodes, codes, flags);
	gLock.unlock();
	}

	env->ReleaseBooleanArrayElements(outFlags, flags, 0);
	env->ReleaseIntArrayElements(keyCodes, codes, 0);
	return ret;
	}

	// ----------------------------------------------------------------------------

	/*
	* JNI registration.
	*/
	static JNINativeMethod gInputMethods[] = {
	/* name, signature, funcPtr */
	{ "readEvent", "(Landroid/view/RawInputEvent;)Z",
	(void*) android_server_KeyInputQueue_readEvent },
	{ "getDeviceClasses", "(I)I",
	(void*) android_server_KeyInputQueue_getDeviceClasses },
	{ "getDeviceName", "(I)Ljava/lang/String;",
	(void*) android_server_KeyInputQueue_getDeviceName },
	{ "getAbsoluteInfo", "(IILcom/android/server/InputDevice$AbsoluteInfo;)Z",
	(void*) android_server_KeyInputQueue_getAbsoluteInfo },
	{ "getSwitchState", "(I)I",
	(void*) android_server_KeyInputQueue_getSwitchState },
	{ "getSwitchState", "(II)I",
	(void*) android_server_KeyInputQueue_getSwitchStateDevice },
	{ "getScancodeState", "(I)I",
	(void*) android_server_KeyInputQueue_getScancodeState },
	{ "getScancodeState", "(II)I",
	(void*) android_server_KeyInputQueue_getScancodeStateDevice },
	{ "getKeycodeState", "(I)I",
	(void*) android_server_KeyInputQueue_getKeycodeState },
	{ "getKeycodeState", "(II)I",
	(void*) android_server_KeyInputQueue_getKeycodeStateDevice },
	{ "hasKeys", "([I[Z)Z",
	(void*) android_server_KeyInputQueue_hasKeys },
	};

	int register_android_server_KeyInputQueue(JNIEnv* env)
	{
	jclass input = env->FindClass("com/android/server/KeyInputQueue");
	LOG_FATAL_IF(input == NULL, "Unable to find class com/android/server/KeyInputQueue");
	int res = jniRegisterNativeMethods(env, "com/android/server/KeyInputQueue",
	gInputMethods, NELEM(gInputMethods));

	jclass absoluteInfo = env->FindClass("com/android/server/InputDevice$AbsoluteInfo");
	LOG_FATAL_IF(absoluteInfo == NULL, "Unable to find class com/android/server/InputDevice$AbsoluteInfo");

	gInputOffsets.mMinValue
	= env->GetFieldID(absoluteInfo, "minValue", "I");
	LOG_FATAL_IF(gInputOffsets.mMinValue == NULL, "Unable to find InputDevice.AbsoluteInfo.minValue");

	gInputOffsets.mMaxValue
	= env->GetFieldID(absoluteInfo, "maxValue", "I");
	LOG_FATAL_IF(gInputOffsets.mMaxValue == NULL, "Unable to find InputDevice.AbsoluteInfo.maxValue");

	gInputOffsets.mFlat
	= env->GetFieldID(absoluteInfo, "flat", "I");
	LOG_FATAL_IF(gInputOffsets.mFlat == NULL, "Unable to find InputDevice.AbsoluteInfo.flat");

	gInputOffsets.mFuzz
	= env->GetFieldID(absoluteInfo, "fuzz", "I");
	LOG_FATAL_IF(gInputOffsets.mFuzz == NULL, "Unable to find InputDevice.AbsoluteInfo.fuzz");

	jclass inputEvent = env->FindClass("android/view/RawInputEvent");
	LOG_FATAL_IF(inputEvent == NULL, "Unable to find class android/view/RawInputEvent");

	gInputOffsets.mDeviceId
	= env->GetFieldID(inputEvent, "deviceId", "I");
	LOG_FATAL_IF(gInputOffsets.mDeviceId == NULL, "Unable to find RawInputEvent.deviceId");

	gInputOffsets.mType
	= env->GetFieldID(inputEvent, "type", "I");
	LOG_FATAL_IF(gInputOffsets.mType == NULL, "Unable to find RawInputEvent.type");

	gInputOffsets.mScancode
	= env->GetFieldID(inputEvent, "scancode", "I");
	LOG_FATAL_IF(gInputOffsets.mScancode == NULL, "Unable to find RawInputEvent.scancode");

	gInputOffsets.mKeycode
	= env->GetFieldID(inputEvent, "keycode", "I");
	LOG_FATAL_IF(gInputOffsets.mKeycode == NULL, "Unable to find RawInputEvent.keycode");

	gInputOffsets.mFlags
	= env->GetFieldID(inputEvent, "flags", "I");
	LOG_FATAL_IF(gInputOffsets.mFlags == NULL, "Unable to find RawInputEvent.flags");

	gInputOffsets.mValue
	= env->GetFieldID(inputEvent, "value", "I");
	LOG_FATAL_IF(gInputOffsets.mValue == NULL, "Unable to find RawInputEvent.value");

	gInputOffsets.mWhen
	= env->GetFieldID(inputEvent, "when", "J");
	LOG_FATAL_IF(gInputOffsets.mWhen == NULL, "Unable to find RawInputEvent.when");

	return res;
	}

	}; // namespace android