46b9ac0ae2
The old dispatch mechanism has been left in place and continues to be used by default for now. To enable native input dispatch, edit the ENABLE_NATIVE_DISPATCH constant in WindowManagerPolicy. Includes part of the new input event NDK API. Some details TBD. To wire up input dispatch, as the ViewRoot adds a window to the window session it receives an InputChannel object as an output argument. The InputChannel encapsulates the file descriptors for a shared memory region and two pipe end-points. The ViewRoot then provides the InputChannel to the InputQueue. Behind the scenes, InputQueue simply attaches handlers to the native PollLoop object that underlies the MessageQueue. This way MessageQueue doesn't need to know anything about input dispatch per-se, it just exposes (in native code) a PollLoop that other components can use to monitor file descriptor state changes. There can be zero or more targets for any given input event. Each input target is specified by its input channel and some parameters including flags, an X/Y coordinate offset, and the dispatch timeout. An input target can request either synchronous dispatch (for foreground apps) or asynchronous dispatch (fire-and-forget for wallpapers and "outside" targets). Currently, finding the appropriate input targets for an event requires a call back into the WindowManagerServer from native code. In the future this will be refactored to avoid most of these callbacks except as required to handle pending focus transitions. End-to-end event dispatch mostly works! To do: event injection, rate limiting, ANRs, testing, optimization, etc. Change-Id: I8c36b2b9e0a2d27392040ecda0f51b636456de25
359 lines
11 KiB
C++
359 lines
11 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "Input"
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#include "jni.h"
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#include "JNIHelp.h"
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#include <utils/misc.h>
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#include <utils/Log.h>
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#include <ui/EventHub.h>
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#include <utils/threads.h>
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#include <stdio.h>
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namespace android {
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// ----------------------------------------------------------------------------
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static struct input_offsets_t
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{
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jfieldID mMinValue;
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jfieldID mMaxValue;
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jfieldID mFlat;
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jfieldID mFuzz;
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jfieldID mDeviceId;
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jfieldID mType;
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jfieldID mScancode;
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jfieldID mKeycode;
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jfieldID mFlags;
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jfieldID mValue;
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jfieldID mWhen;
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} gInputOffsets;
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// ----------------------------------------------------------------------------
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static Mutex gLock;
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static sp<EventHub> gHub;
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static jboolean
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android_server_KeyInputQueue_readEvent(JNIEnv* env, jobject clazz,
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jobject event)
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{
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gLock.lock();
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sp<EventHub> hub = gHub;
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if (hub == NULL) {
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hub = new EventHub;
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gHub = hub;
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}
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gLock.unlock();
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int32_t deviceId;
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int32_t type;
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int32_t scancode, keycode;
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uint32_t flags;
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int32_t value;
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nsecs_t when;
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bool res = hub->getEvent(&deviceId, &type, &scancode, &keycode,
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&flags, &value, &when);
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env->SetIntField(event, gInputOffsets.mDeviceId, (jint)deviceId);
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env->SetIntField(event, gInputOffsets.mType, (jint)type);
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env->SetIntField(event, gInputOffsets.mScancode, (jint)scancode);
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env->SetIntField(event, gInputOffsets.mKeycode, (jint)keycode);
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env->SetIntField(event, gInputOffsets.mFlags, (jint)flags);
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env->SetIntField(event, gInputOffsets.mValue, value);
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env->SetLongField(event, gInputOffsets.mWhen,
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(jlong)(nanoseconds_to_milliseconds(when)));
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return res;
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}
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static jint
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android_server_KeyInputQueue_getDeviceClasses(JNIEnv* env, jobject clazz,
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jint deviceId)
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{
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jint classes = 0;
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gLock.lock();
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if (gHub != NULL) classes = gHub->getDeviceClasses(deviceId);
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gLock.unlock();
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return classes;
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}
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static jstring
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android_server_KeyInputQueue_getDeviceName(JNIEnv* env, jobject clazz,
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jint deviceId)
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{
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String8 name;
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gLock.lock();
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if (gHub != NULL) name = gHub->getDeviceName(deviceId);
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gLock.unlock();
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if (name.size() > 0) {
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return env->NewStringUTF(name.string());
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}
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return NULL;
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}
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static void
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android_server_KeyInputQueue_addExcludedDevice(JNIEnv* env, jobject clazz,
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jstring deviceName)
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{
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gLock.lock();
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sp<EventHub> hub = gHub;
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if (hub == NULL) {
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hub = new EventHub;
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gHub = hub;
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}
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gLock.unlock();
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const char* nameStr = env->GetStringUTFChars(deviceName, NULL);
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gHub->addExcludedDevice(nameStr);
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env->ReleaseStringUTFChars(deviceName, nameStr);
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}
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static jboolean
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android_server_KeyInputQueue_getAbsoluteInfo(JNIEnv* env, jobject clazz,
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jint deviceId, jint axis,
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jobject info)
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{
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int32_t minValue, maxValue, flat, fuzz;
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int res = -1;
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gLock.lock();
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if (gHub != NULL) {
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res = gHub->getAbsoluteInfo(deviceId, axis,
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&minValue, &maxValue, &flat, &fuzz);
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}
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gLock.unlock();
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if (res < 0) return JNI_FALSE;
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env->SetIntField(info, gInputOffsets.mMinValue, (jint)minValue);
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env->SetIntField(info, gInputOffsets.mMaxValue, (jint)maxValue);
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env->SetIntField(info, gInputOffsets.mFlat, (jint)flat);
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env->SetIntField(info, gInputOffsets.mFuzz, (jint)fuzz);
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return JNI_TRUE;
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}
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static jint
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android_server_KeyInputQueue_getSwitchState(JNIEnv* env, jobject clazz,
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jint sw)
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{
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jint st = -1;
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gLock.lock();
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if (gHub != NULL) st = gHub->getSwitchState(-1, -1, sw);
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gLock.unlock();
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return st;
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}
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static jint
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android_server_KeyInputQueue_getSwitchStateDevice(JNIEnv* env, jobject clazz,
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jint deviceId, jint sw)
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{
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jint st = -1;
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gLock.lock();
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if (gHub != NULL) st = gHub->getSwitchState(deviceId, -1, sw);
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gLock.unlock();
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return st;
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}
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static jint
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android_server_KeyInputQueue_getScancodeState(JNIEnv* env, jobject clazz,
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jint sw)
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{
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jint st = -1;
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gLock.lock();
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if (gHub != NULL) st = gHub->getScanCodeState(0, -1, sw);
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gLock.unlock();
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return st;
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}
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static jint
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android_server_KeyInputQueue_getScancodeStateDevice(JNIEnv* env, jobject clazz,
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jint deviceId, jint sw)
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{
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jint st = -1;
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gLock.lock();
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if (gHub != NULL) st = gHub->getScanCodeState(deviceId, -1, sw);
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gLock.unlock();
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return st;
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}
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static jint
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android_server_KeyInputQueue_getKeycodeState(JNIEnv* env, jobject clazz,
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jint sw)
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{
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jint st = -1;
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gLock.lock();
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if (gHub != NULL) st = gHub->getKeyCodeState(0, -1, sw);
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gLock.unlock();
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return st;
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}
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static jint
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android_server_KeyInputQueue_getKeycodeStateDevice(JNIEnv* env, jobject clazz,
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jint deviceId, jint sw)
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{
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jint st = -1;
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gLock.lock();
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if (gHub != NULL) st = gHub->getKeyCodeState(deviceId,-1, sw);
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gLock.unlock();
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return st;
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}
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static jint
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android_server_KeyInputQueue_scancodeToKeycode(JNIEnv* env, jobject clazz,
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jint deviceId, jint scancode)
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{
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jint res = 0;
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gLock.lock();
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if (gHub != NULL) {
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int32_t keycode;
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uint32_t flags;
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gHub->scancodeToKeycode(deviceId, scancode, &keycode, &flags);
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res = keycode;
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}
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gLock.unlock();
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return res;
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}
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static jboolean
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android_server_KeyInputQueue_hasKeys(JNIEnv* env, jobject clazz,
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jintArray keyCodes, jbooleanArray outFlags)
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{
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jboolean ret = JNI_FALSE;
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int32_t* codes = env->GetIntArrayElements(keyCodes, NULL);
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uint8_t* flags = env->GetBooleanArrayElements(outFlags, NULL);
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jsize numCodes = env->GetArrayLength(keyCodes);
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if (numCodes == env->GetArrayLength(outFlags)) {
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gLock.lock();
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if (gHub != NULL) ret = gHub->hasKeys(numCodes, codes, flags);
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gLock.unlock();
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}
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env->ReleaseBooleanArrayElements(outFlags, flags, 0);
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env->ReleaseIntArrayElements(keyCodes, codes, 0);
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return ret;
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}
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// ----------------------------------------------------------------------------
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/*
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* JNI registration.
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*/
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static JNINativeMethod gInputMethods[] = {
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/* name, signature, funcPtr */
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{ "readEvent", "(Landroid/view/RawInputEvent;)Z",
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(void*) android_server_KeyInputQueue_readEvent },
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{ "getDeviceClasses", "(I)I",
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(void*) android_server_KeyInputQueue_getDeviceClasses },
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{ "getDeviceName", "(I)Ljava/lang/String;",
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(void*) android_server_KeyInputQueue_getDeviceName },
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{ "addExcludedDevice", "(Ljava/lang/String;)V",
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(void*) android_server_KeyInputQueue_addExcludedDevice },
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{ "getAbsoluteInfo", "(IILcom/android/server/InputDevice$AbsoluteInfo;)Z",
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(void*) android_server_KeyInputQueue_getAbsoluteInfo },
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{ "getSwitchState", "(I)I",
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(void*) android_server_KeyInputQueue_getSwitchState },
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{ "getSwitchState", "(II)I",
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(void*) android_server_KeyInputQueue_getSwitchStateDevice },
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{ "nativeGetScancodeState", "(I)I",
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(void*) android_server_KeyInputQueue_getScancodeState },
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{ "nativeGetScancodeState", "(II)I",
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(void*) android_server_KeyInputQueue_getScancodeStateDevice },
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{ "nativeGetKeycodeState", "(I)I",
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(void*) android_server_KeyInputQueue_getKeycodeState },
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{ "nativeGetKeycodeState", "(II)I",
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(void*) android_server_KeyInputQueue_getKeycodeStateDevice },
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{ "hasKeys", "([I[Z)Z",
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(void*) android_server_KeyInputQueue_hasKeys },
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{ "scancodeToKeycode", "(II)I",
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(void*) android_server_KeyInputQueue_scancodeToKeycode },
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};
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int register_android_server_KeyInputQueue(JNIEnv* env)
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{
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jclass input = env->FindClass("com/android/server/KeyInputQueue");
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LOG_FATAL_IF(input == NULL, "Unable to find class com/android/server/KeyInputQueue");
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int res = jniRegisterNativeMethods(env, "com/android/server/KeyInputQueue",
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gInputMethods, NELEM(gInputMethods));
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jclass absoluteInfo = env->FindClass("com/android/server/InputDevice$AbsoluteInfo");
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LOG_FATAL_IF(absoluteInfo == NULL, "Unable to find class com/android/server/InputDevice$AbsoluteInfo");
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gInputOffsets.mMinValue
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= env->GetFieldID(absoluteInfo, "minValue", "I");
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LOG_FATAL_IF(gInputOffsets.mMinValue == NULL, "Unable to find InputDevice.AbsoluteInfo.minValue");
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gInputOffsets.mMaxValue
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= env->GetFieldID(absoluteInfo, "maxValue", "I");
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LOG_FATAL_IF(gInputOffsets.mMaxValue == NULL, "Unable to find InputDevice.AbsoluteInfo.maxValue");
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gInputOffsets.mFlat
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= env->GetFieldID(absoluteInfo, "flat", "I");
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LOG_FATAL_IF(gInputOffsets.mFlat == NULL, "Unable to find InputDevice.AbsoluteInfo.flat");
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gInputOffsets.mFuzz
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= env->GetFieldID(absoluteInfo, "fuzz", "I");
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LOG_FATAL_IF(gInputOffsets.mFuzz == NULL, "Unable to find InputDevice.AbsoluteInfo.fuzz");
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jclass inputEvent = env->FindClass("android/view/RawInputEvent");
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LOG_FATAL_IF(inputEvent == NULL, "Unable to find class android/view/RawInputEvent");
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gInputOffsets.mDeviceId
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= env->GetFieldID(inputEvent, "deviceId", "I");
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LOG_FATAL_IF(gInputOffsets.mDeviceId == NULL, "Unable to find RawInputEvent.deviceId");
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gInputOffsets.mType
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= env->GetFieldID(inputEvent, "type", "I");
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LOG_FATAL_IF(gInputOffsets.mType == NULL, "Unable to find RawInputEvent.type");
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gInputOffsets.mScancode
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= env->GetFieldID(inputEvent, "scancode", "I");
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LOG_FATAL_IF(gInputOffsets.mScancode == NULL, "Unable to find RawInputEvent.scancode");
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gInputOffsets.mKeycode
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= env->GetFieldID(inputEvent, "keycode", "I");
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LOG_FATAL_IF(gInputOffsets.mKeycode == NULL, "Unable to find RawInputEvent.keycode");
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gInputOffsets.mFlags
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= env->GetFieldID(inputEvent, "flags", "I");
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LOG_FATAL_IF(gInputOffsets.mFlags == NULL, "Unable to find RawInputEvent.flags");
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gInputOffsets.mValue
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= env->GetFieldID(inputEvent, "value", "I");
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LOG_FATAL_IF(gInputOffsets.mValue == NULL, "Unable to find RawInputEvent.value");
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gInputOffsets.mWhen
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= env->GetFieldID(inputEvent, "when", "J");
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LOG_FATAL_IF(gInputOffsets.mWhen == NULL, "Unable to find RawInputEvent.when");
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return res;
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}
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}; // namespace android
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