Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 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 | |
| 17 | #define LOG_TAG "InputChannel-JNI" |
| 18 | |
| 19 | #include "JNIHelp.h" |
| 20 | |
| 21 | #include <android_runtime/AndroidRuntime.h> |
| 22 | #include <binder/Parcel.h> |
| 23 | #include <utils/Log.h> |
Jeff Brown | 9d3b1a4 | 2013-07-01 19:07:15 -0700 | [diff] [blame] | 24 | #include <input/InputTransport.h> |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 25 | #include "android_view_InputChannel.h" |
Jeff Sharkey | d84e1ce | 2012-03-06 18:26:19 -0800 | [diff] [blame] | 26 | #include "android_os_Parcel.h" |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 27 | #include "android_util_Binder.h" |
| 28 | |
Andreas Gampe | 987f79f | 2014-11-18 17:29:46 -0800 | [diff] [blame] | 29 | #include "core_jni_helpers.h" |
| 30 | |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 31 | namespace android { |
| 32 | |
| 33 | // ---------------------------------------------------------------------------- |
| 34 | |
| 35 | static struct { |
| 36 | jclass clazz; |
| 37 | |
| 38 | jfieldID mPtr; // native object attached to the DVM InputChannel |
| 39 | jmethodID ctor; |
| 40 | } gInputChannelClassInfo; |
| 41 | |
| 42 | // ---------------------------------------------------------------------------- |
| 43 | |
| 44 | class NativeInputChannel { |
| 45 | public: |
| 46 | NativeInputChannel(const sp<InputChannel>& inputChannel); |
| 47 | ~NativeInputChannel(); |
| 48 | |
| 49 | inline sp<InputChannel> getInputChannel() { return mInputChannel; } |
| 50 | |
| 51 | void setDisposeCallback(InputChannelObjDisposeCallback callback, void* data); |
| 52 | void invokeAndRemoveDisposeCallback(JNIEnv* env, jobject obj); |
| 53 | |
| 54 | private: |
| 55 | sp<InputChannel> mInputChannel; |
| 56 | InputChannelObjDisposeCallback mDisposeCallback; |
| 57 | void* mDisposeData; |
| 58 | }; |
| 59 | |
| 60 | // ---------------------------------------------------------------------------- |
| 61 | |
| 62 | NativeInputChannel::NativeInputChannel(const sp<InputChannel>& inputChannel) : |
| 63 | mInputChannel(inputChannel), mDisposeCallback(NULL) { |
| 64 | } |
| 65 | |
| 66 | NativeInputChannel::~NativeInputChannel() { |
| 67 | } |
| 68 | |
| 69 | void NativeInputChannel::setDisposeCallback(InputChannelObjDisposeCallback callback, void* data) { |
| 70 | mDisposeCallback = callback; |
| 71 | mDisposeData = data; |
| 72 | } |
| 73 | |
| 74 | void NativeInputChannel::invokeAndRemoveDisposeCallback(JNIEnv* env, jobject obj) { |
| 75 | if (mDisposeCallback) { |
| 76 | mDisposeCallback(env, obj, mInputChannel, mDisposeData); |
| 77 | mDisposeCallback = NULL; |
| 78 | mDisposeData = NULL; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | // ---------------------------------------------------------------------------- |
| 83 | |
| 84 | static NativeInputChannel* android_view_InputChannel_getNativeInputChannel(JNIEnv* env, |
| 85 | jobject inputChannelObj) { |
Ashok Bhat | a931d521 | 2014-01-08 14:04:51 +0000 | [diff] [blame] | 86 | jlong longPtr = env->GetLongField(inputChannelObj, gInputChannelClassInfo.mPtr); |
| 87 | return reinterpret_cast<NativeInputChannel*>(longPtr); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 88 | } |
| 89 | |
| 90 | static void android_view_InputChannel_setNativeInputChannel(JNIEnv* env, jobject inputChannelObj, |
| 91 | NativeInputChannel* nativeInputChannel) { |
Ashok Bhat | a931d521 | 2014-01-08 14:04:51 +0000 | [diff] [blame] | 92 | env->SetLongField(inputChannelObj, gInputChannelClassInfo.mPtr, |
| 93 | reinterpret_cast<jlong>(nativeInputChannel)); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 94 | } |
| 95 | |
| 96 | sp<InputChannel> android_view_InputChannel_getInputChannel(JNIEnv* env, jobject inputChannelObj) { |
| 97 | NativeInputChannel* nativeInputChannel = |
| 98 | android_view_InputChannel_getNativeInputChannel(env, inputChannelObj); |
| 99 | return nativeInputChannel != NULL ? nativeInputChannel->getInputChannel() : NULL; |
| 100 | } |
| 101 | |
| 102 | void android_view_InputChannel_setDisposeCallback(JNIEnv* env, jobject inputChannelObj, |
| 103 | InputChannelObjDisposeCallback callback, void* data) { |
| 104 | NativeInputChannel* nativeInputChannel = |
| 105 | android_view_InputChannel_getNativeInputChannel(env, inputChannelObj); |
| 106 | if (nativeInputChannel == NULL) { |
Steve Block | 8564c8d | 2012-01-05 23:22:43 +0000 | [diff] [blame] | 107 | ALOGW("Cannot set dispose callback because input channel object has not been initialized."); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 108 | } else { |
| 109 | nativeInputChannel->setDisposeCallback(callback, data); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | static jobject android_view_InputChannel_createInputChannel(JNIEnv* env, |
| 114 | NativeInputChannel* nativeInputChannel) { |
| 115 | jobject inputChannelObj = env->NewObject(gInputChannelClassInfo.clazz, |
| 116 | gInputChannelClassInfo.ctor); |
Jeff Brown | cc4f7db | 2011-08-30 20:34:48 -0700 | [diff] [blame] | 117 | if (inputChannelObj) { |
| 118 | android_view_InputChannel_setNativeInputChannel(env, inputChannelObj, nativeInputChannel); |
| 119 | } |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 120 | return inputChannelObj; |
| 121 | } |
| 122 | |
| 123 | static jobjectArray android_view_InputChannel_nativeOpenInputChannelPair(JNIEnv* env, |
| 124 | jclass clazz, jstring nameObj) { |
| 125 | const char* nameChars = env->GetStringUTFChars(nameObj, NULL); |
| 126 | String8 name(nameChars); |
| 127 | env->ReleaseStringUTFChars(nameObj, nameChars); |
| 128 | |
Jeff Brown | 5c225b1 | 2010-06-16 01:53:36 -0700 | [diff] [blame] | 129 | sp<InputChannel> serverChannel; |
| 130 | sp<InputChannel> clientChannel; |
| 131 | status_t result = InputChannel::openInputChannelPair(name, serverChannel, clientChannel); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 132 | |
| 133 | if (result) { |
Jeff Brown | cc4f7db | 2011-08-30 20:34:48 -0700 | [diff] [blame] | 134 | String8 message; |
| 135 | message.appendFormat("Could not open input channel pair. status=%d", result); |
| 136 | jniThrowRuntimeException(env, message.string()); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 137 | return NULL; |
| 138 | } |
| 139 | |
Jeff Brown | cc4f7db | 2011-08-30 20:34:48 -0700 | [diff] [blame] | 140 | jobjectArray channelPair = env->NewObjectArray(2, gInputChannelClassInfo.clazz, NULL); |
| 141 | if (env->ExceptionCheck()) { |
| 142 | return NULL; |
| 143 | } |
| 144 | |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 145 | jobject serverChannelObj = android_view_InputChannel_createInputChannel(env, |
| 146 | new NativeInputChannel(serverChannel)); |
Jeff Brown | cc4f7db | 2011-08-30 20:34:48 -0700 | [diff] [blame] | 147 | if (env->ExceptionCheck()) { |
| 148 | return NULL; |
| 149 | } |
| 150 | |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 151 | jobject clientChannelObj = android_view_InputChannel_createInputChannel(env, |
| 152 | new NativeInputChannel(clientChannel)); |
Jeff Brown | cc4f7db | 2011-08-30 20:34:48 -0700 | [diff] [blame] | 153 | if (env->ExceptionCheck()) { |
| 154 | return NULL; |
| 155 | } |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 156 | |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 157 | env->SetObjectArrayElement(channelPair, 0, serverChannelObj); |
| 158 | env->SetObjectArrayElement(channelPair, 1, clientChannelObj); |
| 159 | return channelPair; |
| 160 | } |
| 161 | |
| 162 | static void android_view_InputChannel_nativeDispose(JNIEnv* env, jobject obj, jboolean finalized) { |
| 163 | NativeInputChannel* nativeInputChannel = |
| 164 | android_view_InputChannel_getNativeInputChannel(env, obj); |
| 165 | if (nativeInputChannel) { |
| 166 | if (finalized) { |
Steve Block | 8564c8d | 2012-01-05 23:22:43 +0000 | [diff] [blame] | 167 | ALOGW("Input channel object '%s' was finalized without being disposed!", |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 168 | nativeInputChannel->getInputChannel()->getName().string()); |
| 169 | } |
| 170 | |
| 171 | nativeInputChannel->invokeAndRemoveDisposeCallback(env, obj); |
| 172 | |
| 173 | android_view_InputChannel_setNativeInputChannel(env, obj, NULL); |
| 174 | delete nativeInputChannel; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | static void android_view_InputChannel_nativeTransferTo(JNIEnv* env, jobject obj, |
| 179 | jobject otherObj) { |
Jeff Brown | cc4f7db | 2011-08-30 20:34:48 -0700 | [diff] [blame] | 180 | if (android_view_InputChannel_getNativeInputChannel(env, otherObj) != NULL) { |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 181 | jniThrowException(env, "java/lang/IllegalStateException", |
| 182 | "Other object already has a native input channel."); |
| 183 | return; |
| 184 | } |
| 185 | |
| 186 | NativeInputChannel* nativeInputChannel = |
| 187 | android_view_InputChannel_getNativeInputChannel(env, obj); |
| 188 | android_view_InputChannel_setNativeInputChannel(env, otherObj, nativeInputChannel); |
| 189 | android_view_InputChannel_setNativeInputChannel(env, obj, NULL); |
| 190 | } |
| 191 | |
| 192 | static void android_view_InputChannel_nativeReadFromParcel(JNIEnv* env, jobject obj, |
| 193 | jobject parcelObj) { |
Jeff Brown | cc4f7db | 2011-08-30 20:34:48 -0700 | [diff] [blame] | 194 | if (android_view_InputChannel_getNativeInputChannel(env, obj) != NULL) { |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 195 | jniThrowException(env, "java/lang/IllegalStateException", |
| 196 | "This object already has a native input channel."); |
| 197 | return; |
| 198 | } |
| 199 | |
| 200 | Parcel* parcel = parcelForJavaObject(env, parcelObj); |
| 201 | if (parcel) { |
| 202 | bool isInitialized = parcel->readInt32(); |
| 203 | if (isInitialized) { |
| 204 | String8 name = parcel->readString8(); |
Jeff Brown | 91e3289 | 2012-02-14 15:56:29 -0800 | [diff] [blame] | 205 | int rawFd = parcel->readFileDescriptor(); |
| 206 | int dupFd = dup(rawFd); |
| 207 | if (dupFd < 0) { |
Jeff Brown | cbee6d6 | 2012-02-03 20:11:27 -0800 | [diff] [blame] | 208 | ALOGE("Error %d dup channel fd %d.", errno, rawFd); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 209 | jniThrowRuntimeException(env, |
| 210 | "Could not read input channel file descriptors from parcel."); |
| 211 | return; |
| 212 | } |
| 213 | |
Jeff Brown | cbee6d6 | 2012-02-03 20:11:27 -0800 | [diff] [blame] | 214 | InputChannel* inputChannel = new InputChannel(name, dupFd); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 215 | NativeInputChannel* nativeInputChannel = new NativeInputChannel(inputChannel); |
| 216 | |
| 217 | android_view_InputChannel_setNativeInputChannel(env, obj, nativeInputChannel); |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | static void android_view_InputChannel_nativeWriteToParcel(JNIEnv* env, jobject obj, |
| 223 | jobject parcelObj) { |
| 224 | Parcel* parcel = parcelForJavaObject(env, parcelObj); |
| 225 | if (parcel) { |
| 226 | NativeInputChannel* nativeInputChannel = |
| 227 | android_view_InputChannel_getNativeInputChannel(env, obj); |
| 228 | if (nativeInputChannel) { |
| 229 | sp<InputChannel> inputChannel = nativeInputChannel->getInputChannel(); |
| 230 | |
| 231 | parcel->writeInt32(1); |
| 232 | parcel->writeString8(inputChannel->getName()); |
Jeff Brown | cbee6d6 | 2012-02-03 20:11:27 -0800 | [diff] [blame] | 233 | parcel->writeDupFileDescriptor(inputChannel->getFd()); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 234 | } else { |
| 235 | parcel->writeInt32(0); |
| 236 | } |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | static jstring android_view_InputChannel_nativeGetName(JNIEnv* env, jobject obj) { |
| 241 | NativeInputChannel* nativeInputChannel = |
| 242 | android_view_InputChannel_getNativeInputChannel(env, obj); |
| 243 | if (! nativeInputChannel) { |
| 244 | return NULL; |
| 245 | } |
| 246 | |
| 247 | jstring name = env->NewStringUTF(nativeInputChannel->getInputChannel()->getName().string()); |
| 248 | return name; |
| 249 | } |
| 250 | |
Jeff Brown | 1951ce8 | 2013-04-04 22:45:12 -0700 | [diff] [blame] | 251 | static void android_view_InputChannel_nativeDup(JNIEnv* env, jobject obj, jobject otherObj) { |
| 252 | NativeInputChannel* nativeInputChannel = |
| 253 | android_view_InputChannel_getNativeInputChannel(env, obj); |
| 254 | if (nativeInputChannel) { |
| 255 | android_view_InputChannel_setNativeInputChannel(env, otherObj, |
| 256 | new NativeInputChannel(nativeInputChannel->getInputChannel()->dup())); |
| 257 | } |
| 258 | } |
| 259 | |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 260 | // ---------------------------------------------------------------------------- |
| 261 | |
Daniel Micay | 76f6a86 | 2015-09-19 17:31:01 -0400 | [diff] [blame] | 262 | static const JNINativeMethod gInputChannelMethods[] = { |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 263 | /* name, signature, funcPtr */ |
| 264 | { "nativeOpenInputChannelPair", "(Ljava/lang/String;)[Landroid/view/InputChannel;", |
| 265 | (void*)android_view_InputChannel_nativeOpenInputChannelPair }, |
| 266 | { "nativeDispose", "(Z)V", |
| 267 | (void*)android_view_InputChannel_nativeDispose }, |
| 268 | { "nativeTransferTo", "(Landroid/view/InputChannel;)V", |
| 269 | (void*)android_view_InputChannel_nativeTransferTo }, |
| 270 | { "nativeReadFromParcel", "(Landroid/os/Parcel;)V", |
| 271 | (void*)android_view_InputChannel_nativeReadFromParcel }, |
| 272 | { "nativeWriteToParcel", "(Landroid/os/Parcel;)V", |
| 273 | (void*)android_view_InputChannel_nativeWriteToParcel }, |
| 274 | { "nativeGetName", "()Ljava/lang/String;", |
| 275 | (void*)android_view_InputChannel_nativeGetName }, |
Jeff Brown | 1951ce8 | 2013-04-04 22:45:12 -0700 | [diff] [blame] | 276 | { "nativeDup", "(Landroid/view/InputChannel;)V", |
| 277 | (void*)android_view_InputChannel_nativeDup }, |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 278 | }; |
| 279 | |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 280 | int register_android_view_InputChannel(JNIEnv* env) { |
Andreas Gampe | 987f79f | 2014-11-18 17:29:46 -0800 | [diff] [blame] | 281 | int res = RegisterMethodsOrDie(env, "android/view/InputChannel", gInputChannelMethods, |
| 282 | NELEM(gInputChannelMethods)); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 283 | |
Andreas Gampe | 987f79f | 2014-11-18 17:29:46 -0800 | [diff] [blame] | 284 | jclass clazz = FindClassOrDie(env, "android/view/InputChannel"); |
| 285 | gInputChannelClassInfo.clazz = MakeGlobalRefOrDie(env, clazz); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 286 | |
Andreas Gampe | 987f79f | 2014-11-18 17:29:46 -0800 | [diff] [blame] | 287 | gInputChannelClassInfo.mPtr = GetFieldIDOrDie(env, gInputChannelClassInfo.clazz, "mPtr", "J"); |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 288 | |
Andreas Gampe | 987f79f | 2014-11-18 17:29:46 -0800 | [diff] [blame] | 289 | gInputChannelClassInfo.ctor = GetMethodIDOrDie(env, gInputChannelClassInfo.clazz, "<init>", |
| 290 | "()V"); |
| 291 | |
| 292 | return res; |
Jeff Brown | 46b9ac0 | 2010-04-22 18:58:52 -0700 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | } // namespace android |