289 lines
11 KiB
C++
289 lines
11 KiB
C++
/*
|
|
* 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 "InputChannel-JNI"
|
|
|
|
#include "JNIHelp.h"
|
|
|
|
#include <android_runtime/AndroidRuntime.h>
|
|
#include <binder/Parcel.h>
|
|
#include <utils/Log.h>
|
|
#include <ui/InputTransport.h>
|
|
#include "android_view_InputChannel.h"
|
|
#include "android_util_Binder.h"
|
|
|
|
namespace android {
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
static struct {
|
|
jclass clazz;
|
|
|
|
jfieldID mPtr; // native object attached to the DVM InputChannel
|
|
jmethodID ctor;
|
|
} gInputChannelClassInfo;
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class NativeInputChannel {
|
|
public:
|
|
NativeInputChannel(const sp<InputChannel>& inputChannel);
|
|
~NativeInputChannel();
|
|
|
|
inline sp<InputChannel> getInputChannel() { return mInputChannel; }
|
|
|
|
void setDisposeCallback(InputChannelObjDisposeCallback callback, void* data);
|
|
void invokeAndRemoveDisposeCallback(JNIEnv* env, jobject obj);
|
|
|
|
private:
|
|
sp<InputChannel> mInputChannel;
|
|
InputChannelObjDisposeCallback mDisposeCallback;
|
|
void* mDisposeData;
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
NativeInputChannel::NativeInputChannel(const sp<InputChannel>& inputChannel) :
|
|
mInputChannel(inputChannel), mDisposeCallback(NULL) {
|
|
}
|
|
|
|
NativeInputChannel::~NativeInputChannel() {
|
|
}
|
|
|
|
void NativeInputChannel::setDisposeCallback(InputChannelObjDisposeCallback callback, void* data) {
|
|
mDisposeCallback = callback;
|
|
mDisposeData = data;
|
|
}
|
|
|
|
void NativeInputChannel::invokeAndRemoveDisposeCallback(JNIEnv* env, jobject obj) {
|
|
if (mDisposeCallback) {
|
|
mDisposeCallback(env, obj, mInputChannel, mDisposeData);
|
|
mDisposeCallback = NULL;
|
|
mDisposeData = NULL;
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
static NativeInputChannel* android_view_InputChannel_getNativeInputChannel(JNIEnv* env,
|
|
jobject inputChannelObj) {
|
|
jint intPtr = env->GetIntField(inputChannelObj, gInputChannelClassInfo.mPtr);
|
|
return reinterpret_cast<NativeInputChannel*>(intPtr);
|
|
}
|
|
|
|
static void android_view_InputChannel_setNativeInputChannel(JNIEnv* env, jobject inputChannelObj,
|
|
NativeInputChannel* nativeInputChannel) {
|
|
env->SetIntField(inputChannelObj, gInputChannelClassInfo.mPtr,
|
|
reinterpret_cast<jint>(nativeInputChannel));
|
|
}
|
|
|
|
sp<InputChannel> android_view_InputChannel_getInputChannel(JNIEnv* env, jobject inputChannelObj) {
|
|
NativeInputChannel* nativeInputChannel =
|
|
android_view_InputChannel_getNativeInputChannel(env, inputChannelObj);
|
|
return nativeInputChannel != NULL ? nativeInputChannel->getInputChannel() : NULL;
|
|
}
|
|
|
|
void android_view_InputChannel_setDisposeCallback(JNIEnv* env, jobject inputChannelObj,
|
|
InputChannelObjDisposeCallback callback, void* data) {
|
|
NativeInputChannel* nativeInputChannel =
|
|
android_view_InputChannel_getNativeInputChannel(env, inputChannelObj);
|
|
if (nativeInputChannel == NULL) {
|
|
LOGW("Cannot set dispose callback because input channel object has not been initialized.");
|
|
} else {
|
|
nativeInputChannel->setDisposeCallback(callback, data);
|
|
}
|
|
}
|
|
|
|
static jobject android_view_InputChannel_createInputChannel(JNIEnv* env,
|
|
NativeInputChannel* nativeInputChannel) {
|
|
jobject inputChannelObj = env->NewObject(gInputChannelClassInfo.clazz,
|
|
gInputChannelClassInfo.ctor);
|
|
android_view_InputChannel_setNativeInputChannel(env, inputChannelObj, nativeInputChannel);
|
|
return inputChannelObj;
|
|
}
|
|
|
|
static jobjectArray android_view_InputChannel_nativeOpenInputChannelPair(JNIEnv* env,
|
|
jclass clazz, jstring nameObj) {
|
|
const char* nameChars = env->GetStringUTFChars(nameObj, NULL);
|
|
String8 name(nameChars);
|
|
env->ReleaseStringUTFChars(nameObj, nameChars);
|
|
|
|
sp<InputChannel> serverChannel;
|
|
sp<InputChannel> clientChannel;
|
|
status_t result = InputChannel::openInputChannelPair(name, serverChannel, clientChannel);
|
|
|
|
if (result) {
|
|
LOGE("Could not open input channel pair. status=%d", result);
|
|
jniThrowRuntimeException(env, "Could not open input channel pair.");
|
|
return NULL;
|
|
}
|
|
|
|
// TODO more robust error checking
|
|
jobject serverChannelObj = android_view_InputChannel_createInputChannel(env,
|
|
new NativeInputChannel(serverChannel));
|
|
jobject clientChannelObj = android_view_InputChannel_createInputChannel(env,
|
|
new NativeInputChannel(clientChannel));
|
|
|
|
jobjectArray channelPair = env->NewObjectArray(2, gInputChannelClassInfo.clazz, NULL);
|
|
env->SetObjectArrayElement(channelPair, 0, serverChannelObj);
|
|
env->SetObjectArrayElement(channelPair, 1, clientChannelObj);
|
|
return channelPair;
|
|
}
|
|
|
|
static void android_view_InputChannel_nativeDispose(JNIEnv* env, jobject obj, jboolean finalized) {
|
|
NativeInputChannel* nativeInputChannel =
|
|
android_view_InputChannel_getNativeInputChannel(env, obj);
|
|
if (nativeInputChannel) {
|
|
if (finalized) {
|
|
LOGW("Input channel object '%s' was finalized without being disposed!",
|
|
nativeInputChannel->getInputChannel()->getName().string());
|
|
}
|
|
|
|
nativeInputChannel->invokeAndRemoveDisposeCallback(env, obj);
|
|
|
|
android_view_InputChannel_setNativeInputChannel(env, obj, NULL);
|
|
delete nativeInputChannel;
|
|
}
|
|
}
|
|
|
|
static void android_view_InputChannel_nativeTransferTo(JNIEnv* env, jobject obj,
|
|
jobject otherObj) {
|
|
if (android_view_InputChannel_getInputChannel(env, otherObj) != NULL) {
|
|
jniThrowException(env, "java/lang/IllegalStateException",
|
|
"Other object already has a native input channel.");
|
|
return;
|
|
}
|
|
|
|
NativeInputChannel* nativeInputChannel =
|
|
android_view_InputChannel_getNativeInputChannel(env, obj);
|
|
android_view_InputChannel_setNativeInputChannel(env, otherObj, nativeInputChannel);
|
|
android_view_InputChannel_setNativeInputChannel(env, obj, NULL);
|
|
}
|
|
|
|
static void android_view_InputChannel_nativeReadFromParcel(JNIEnv* env, jobject obj,
|
|
jobject parcelObj) {
|
|
if (android_view_InputChannel_getInputChannel(env, obj) != NULL) {
|
|
jniThrowException(env, "java/lang/IllegalStateException",
|
|
"This object already has a native input channel.");
|
|
return;
|
|
}
|
|
|
|
Parcel* parcel = parcelForJavaObject(env, parcelObj);
|
|
if (parcel) {
|
|
bool isInitialized = parcel->readInt32();
|
|
if (isInitialized) {
|
|
String8 name = parcel->readString8();
|
|
int32_t ashmemFd = dup(parcel->readFileDescriptor());
|
|
int32_t receivePipeFd = dup(parcel->readFileDescriptor());
|
|
int32_t sendPipeFd = dup(parcel->readFileDescriptor());
|
|
if (ashmemFd < 0 || receivePipeFd < 0 || sendPipeFd < 0) {
|
|
if (ashmemFd >= 0) ::close(ashmemFd);
|
|
if (receivePipeFd >= 0) ::close(receivePipeFd);
|
|
if (sendPipeFd >= 0) ::close(sendPipeFd);
|
|
jniThrowRuntimeException(env,
|
|
"Could not read input channel file descriptors from parcel.");
|
|
return;
|
|
}
|
|
|
|
InputChannel* inputChannel = new InputChannel(name, ashmemFd,
|
|
receivePipeFd, sendPipeFd);
|
|
NativeInputChannel* nativeInputChannel = new NativeInputChannel(inputChannel);
|
|
|
|
android_view_InputChannel_setNativeInputChannel(env, obj, nativeInputChannel);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void android_view_InputChannel_nativeWriteToParcel(JNIEnv* env, jobject obj,
|
|
jobject parcelObj) {
|
|
Parcel* parcel = parcelForJavaObject(env, parcelObj);
|
|
if (parcel) {
|
|
NativeInputChannel* nativeInputChannel =
|
|
android_view_InputChannel_getNativeInputChannel(env, obj);
|
|
if (nativeInputChannel) {
|
|
sp<InputChannel> inputChannel = nativeInputChannel->getInputChannel();
|
|
|
|
parcel->writeInt32(1);
|
|
parcel->writeString8(inputChannel->getName());
|
|
parcel->writeDupFileDescriptor(inputChannel->getAshmemFd());
|
|
parcel->writeDupFileDescriptor(inputChannel->getReceivePipeFd());
|
|
parcel->writeDupFileDescriptor(inputChannel->getSendPipeFd());
|
|
} else {
|
|
parcel->writeInt32(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static jstring android_view_InputChannel_nativeGetName(JNIEnv* env, jobject obj) {
|
|
NativeInputChannel* nativeInputChannel =
|
|
android_view_InputChannel_getNativeInputChannel(env, obj);
|
|
if (! nativeInputChannel) {
|
|
return NULL;
|
|
}
|
|
|
|
jstring name = env->NewStringUTF(nativeInputChannel->getInputChannel()->getName().string());
|
|
return name;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
static JNINativeMethod gInputChannelMethods[] = {
|
|
/* name, signature, funcPtr */
|
|
{ "nativeOpenInputChannelPair", "(Ljava/lang/String;)[Landroid/view/InputChannel;",
|
|
(void*)android_view_InputChannel_nativeOpenInputChannelPair },
|
|
{ "nativeDispose", "(Z)V",
|
|
(void*)android_view_InputChannel_nativeDispose },
|
|
{ "nativeTransferTo", "(Landroid/view/InputChannel;)V",
|
|
(void*)android_view_InputChannel_nativeTransferTo },
|
|
{ "nativeReadFromParcel", "(Landroid/os/Parcel;)V",
|
|
(void*)android_view_InputChannel_nativeReadFromParcel },
|
|
{ "nativeWriteToParcel", "(Landroid/os/Parcel;)V",
|
|
(void*)android_view_InputChannel_nativeWriteToParcel },
|
|
{ "nativeGetName", "()Ljava/lang/String;",
|
|
(void*)android_view_InputChannel_nativeGetName },
|
|
};
|
|
|
|
#define FIND_CLASS(var, className) \
|
|
var = env->FindClass(className); \
|
|
LOG_FATAL_IF(! var, "Unable to find class " className); \
|
|
var = jclass(env->NewGlobalRef(var));
|
|
|
|
#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
|
|
var = env->GetMethodID(clazz, methodName, methodDescriptor); \
|
|
LOG_FATAL_IF(! var, "Unable to find method " methodName);
|
|
|
|
#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
|
|
var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
|
|
LOG_FATAL_IF(! var, "Unable to find field " fieldName);
|
|
|
|
int register_android_view_InputChannel(JNIEnv* env) {
|
|
int res = jniRegisterNativeMethods(env, "android/view/InputChannel",
|
|
gInputChannelMethods, NELEM(gInputChannelMethods));
|
|
LOG_FATAL_IF(res < 0, "Unable to register native methods.");
|
|
|
|
FIND_CLASS(gInputChannelClassInfo.clazz, "android/view/InputChannel");
|
|
|
|
GET_FIELD_ID(gInputChannelClassInfo.mPtr, gInputChannelClassInfo.clazz,
|
|
"mPtr", "I");
|
|
|
|
GET_METHOD_ID(gInputChannelClassInfo.ctor, gInputChannelClassInfo.clazz,
|
|
"<init>", "()V");
|
|
|
|
return 0;
|
|
}
|
|
|
|
} // namespace android
|