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/*
* 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 "NativeActivity"
#include <utils/Log.h>
#include <poll.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <memory>
#include <android_runtime/android_app_NativeActivity.h>
#include <android_runtime/android_util_AssetManager.h>
#include <android_runtime/android_view_Surface.h>
#include <android_runtime/AndroidRuntime.h>
#include <input/InputTransport.h>
#include <gui/Surface.h>
#include <system/window.h>
#include <utils/Looper.h>
#include "JNIHelp.h"
#include "android_os_MessageQueue.h"
#include "android_view_InputChannel.h"
#include "android_view_KeyEvent.h"
#include "nativebridge/native_bridge.h"
#include "nativeloader/native_loader.h"
#include "core_jni_helpers.h"
#define LOG_TRACE(...)
//#define LOG_TRACE(...) ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)
namespace android
{
static const bool kLogTrace = false;
static struct {
jmethodID finish;
jmethodID setWindowFlags;
jmethodID setWindowFormat;
jmethodID showIme;
jmethodID hideIme;
} gNativeActivityClassInfo;
// ------------------------------------------------------------------------
struct ActivityWork {
int32_t cmd;
int32_t arg1;
int32_t arg2;
};
enum {
CMD_FINISH = 1,
CMD_SET_WINDOW_FORMAT,
CMD_SET_WINDOW_FLAGS,
CMD_SHOW_SOFT_INPUT,
CMD_HIDE_SOFT_INPUT,
};
static void write_work(int fd, int32_t cmd, int32_t arg1=0, int32_t arg2=0) {
ActivityWork work;
work.cmd = cmd;
work.arg1 = arg1;
work.arg2 = arg2;
if (kLogTrace) {
ALOGD("write_work: cmd=%d", cmd);
}
restart:
int res = write(fd, &work, sizeof(work));
if (res < 0 && errno == EINTR) {
goto restart;
}
if (res == sizeof(work)) return;
if (res < 0) ALOGW("Failed writing to work fd: %s", strerror(errno));
else ALOGW("Truncated writing to work fd: %d", res);
}
static bool read_work(int fd, ActivityWork* outWork) {
int res = read(fd, outWork, sizeof(ActivityWork));
// no need to worry about EINTR, poll loop will just come back again.
if (res == sizeof(ActivityWork)) return true;
if (res < 0) ALOGW("Failed reading work fd: %s", strerror(errno));
else ALOGW("Truncated reading work fd: %d", res);
return false;
}
/*
* Native state for interacting with the NativeActivity class.
*/
struct NativeCode : public ANativeActivity {
NativeCode(void* _dlhandle, ANativeActivity_createFunc* _createFunc) {
memset((ANativeActivity*)this, 0, sizeof(ANativeActivity));
memset(&callbacks, 0, sizeof(callbacks));
dlhandle = _dlhandle;
createActivityFunc = _createFunc;
nativeWindow = NULL;
mainWorkRead = mainWorkWrite = -1;
}
~NativeCode() {
if (callbacks.onDestroy != NULL) {
callbacks.onDestroy(this);
}
if (env != NULL && clazz != NULL) {
env->DeleteGlobalRef(clazz);
}
if (messageQueue != NULL && mainWorkRead >= 0) {
messageQueue->getLooper()->removeFd(mainWorkRead);
}
setSurface(NULL);
if (mainWorkRead >= 0) close(mainWorkRead);
if (mainWorkWrite >= 0) close(mainWorkWrite);
if (dlhandle != NULL) {
// for now don't unload... we probably should clean this
// up and only keep one open dlhandle per proc, since there
// is really no benefit to unloading the code.
//dlclose(dlhandle);
}
}
void setSurface(jobject _surface) {
if (_surface != NULL) {
nativeWindow = android_view_Surface_getNativeWindow(env, _surface);
} else {
nativeWindow = NULL;
}
}
ANativeActivityCallbacks callbacks;
void* dlhandle;
ANativeActivity_createFunc* createActivityFunc;
String8 internalDataPathObj;
String8 externalDataPathObj;
String8 obbPathObj;
sp<ANativeWindow> nativeWindow;
int32_t lastWindowWidth;
int32_t lastWindowHeight;
// These are used to wake up the main thread to process work.
int mainWorkRead;
int mainWorkWrite;
sp<MessageQueue> messageQueue;
};
void android_NativeActivity_finish(ANativeActivity* activity) {
NativeCode* code = static_cast<NativeCode*>(activity);
write_work(code->mainWorkWrite, CMD_FINISH, 0);
}
void android_NativeActivity_setWindowFormat(
ANativeActivity* activity, int32_t format) {
NativeCode* code = static_cast<NativeCode*>(activity);
write_work(code->mainWorkWrite, CMD_SET_WINDOW_FORMAT, format);
}
void android_NativeActivity_setWindowFlags(
ANativeActivity* activity, int32_t values, int32_t mask) {
NativeCode* code = static_cast<NativeCode*>(activity);
write_work(code->mainWorkWrite, CMD_SET_WINDOW_FLAGS, values, mask);
}
void android_NativeActivity_showSoftInput(
ANativeActivity* activity, int32_t flags) {
NativeCode* code = static_cast<NativeCode*>(activity);
write_work(code->mainWorkWrite, CMD_SHOW_SOFT_INPUT, flags);
}
void android_NativeActivity_hideSoftInput(
ANativeActivity* activity, int32_t flags) {
NativeCode* code = static_cast<NativeCode*>(activity);
write_work(code->mainWorkWrite, CMD_HIDE_SOFT_INPUT, flags);
}
// ------------------------------------------------------------------------
/*
* Callback for handling native events on the application's main thread.
*/
static int mainWorkCallback(int fd, int events, void* data) {
NativeCode* code = (NativeCode*)data;
if ((events & POLLIN) == 0) {
return 1;
}
ActivityWork work;
if (!read_work(code->mainWorkRead, &work)) {
return 1;
}
if (kLogTrace) {
ALOGD("mainWorkCallback: cmd=%d", work.cmd);
}
switch (work.cmd) {
case CMD_FINISH: {
code->env->CallVoidMethod(code->clazz, gNativeActivityClassInfo.finish);
code->messageQueue->raiseAndClearException(code->env, "finish");
} break;
case CMD_SET_WINDOW_FORMAT: {
code->env->CallVoidMethod(code->clazz,
gNativeActivityClassInfo.setWindowFormat, work.arg1);
code->messageQueue->raiseAndClearException(code->env, "setWindowFormat");
} break;
case CMD_SET_WINDOW_FLAGS: {
code->env->CallVoidMethod(code->clazz,
gNativeActivityClassInfo.setWindowFlags, work.arg1, work.arg2);
code->messageQueue->raiseAndClearException(code->env, "setWindowFlags");
} break;
case CMD_SHOW_SOFT_INPUT: {
code->env->CallVoidMethod(code->clazz,
gNativeActivityClassInfo.showIme, work.arg1);
code->messageQueue->raiseAndClearException(code->env, "showIme");
} break;
case CMD_HIDE_SOFT_INPUT: {
code->env->CallVoidMethod(code->clazz,
gNativeActivityClassInfo.hideIme, work.arg1);
code->messageQueue->raiseAndClearException(code->env, "hideIme");
} break;
default:
ALOGW("Unknown work command: %d", work.cmd);
break;
}
return 1;
}
// ------------------------------------------------------------------------
static jlong
loadNativeCode_native(JNIEnv* env, jobject clazz, jstring path, jstring funcName,
jobject messageQueue, jstring internalDataDir, jstring obbDir,
jstring externalDataDir, jint sdkVersion, jobject jAssetMgr,
jbyteArray savedState, jobject classLoader, jstring libraryPath) {
if (kLogTrace) {
ALOGD("loadNativeCode_native");
}
const char* pathStr = env->GetStringUTFChars(path, NULL);
std::unique_ptr<NativeCode> code;
bool needNativeBridge = false;
void* handle = OpenNativeLibrary(env, sdkVersion, pathStr, classLoader, libraryPath);
if (handle == NULL) {
if (NativeBridgeIsSupported(pathStr)) {
handle = NativeBridgeLoadLibrary(pathStr, RTLD_LAZY);
needNativeBridge = true;
}
}
env->ReleaseStringUTFChars(path, pathStr);
if (handle != NULL) {
void* funcPtr = NULL;
const char* funcStr = env->GetStringUTFChars(funcName, NULL);
if (needNativeBridge) {
funcPtr = NativeBridgeGetTrampoline(handle, funcStr, NULL, 0);
} else {
funcPtr = dlsym(handle, funcStr);
}
code.reset(new NativeCode(handle, (ANativeActivity_createFunc*)funcPtr));
env->ReleaseStringUTFChars(funcName, funcStr);
if (code->createActivityFunc == NULL) {
ALOGW("ANativeActivity_onCreate not found");
return 0;
}
code->messageQueue = android_os_MessageQueue_getMessageQueue(env, messageQueue);
if (code->messageQueue == NULL) {
ALOGW("Unable to retrieve native MessageQueue");
return 0;
}
int msgpipe[2];
if (pipe(msgpipe)) {
ALOGW("could not create pipe: %s", strerror(errno));
return 0;
}
code->mainWorkRead = msgpipe[0];
code->mainWorkWrite = msgpipe[1];
int result = fcntl(code->mainWorkRead, F_SETFL, O_NONBLOCK);
SLOGW_IF(result != 0, "Could not make main work read pipe "
"non-blocking: %s", strerror(errno));
result = fcntl(code->mainWorkWrite, F_SETFL, O_NONBLOCK);
SLOGW_IF(result != 0, "Could not make main work write pipe "
"non-blocking: %s", strerror(errno));
code->messageQueue->getLooper()->addFd(
code->mainWorkRead, 0, ALOOPER_EVENT_INPUT, mainWorkCallback, code.get());
code->ANativeActivity::callbacks = &code->callbacks;
if (env->GetJavaVM(&code->vm) < 0) {
ALOGW("NativeActivity GetJavaVM failed");
return 0;
}
code->env = env;
code->clazz = env->NewGlobalRef(clazz);
const char* dirStr = env->GetStringUTFChars(internalDataDir, NULL);
code->internalDataPathObj = dirStr;
code->internalDataPath = code->internalDataPathObj.string();
env->ReleaseStringUTFChars(internalDataDir, dirStr);
if (externalDataDir != NULL) {
dirStr = env->GetStringUTFChars(externalDataDir, NULL);
code->externalDataPathObj = dirStr;
env->ReleaseStringUTFChars(externalDataDir, dirStr);
}
code->externalDataPath = code->externalDataPathObj.string();
code->sdkVersion = sdkVersion;
code->assetManager = assetManagerForJavaObject(env, jAssetMgr);
if (obbDir != NULL) {
dirStr = env->GetStringUTFChars(obbDir, NULL);
code->obbPathObj = dirStr;
env->ReleaseStringUTFChars(obbDir, dirStr);
}
code->obbPath = code->obbPathObj.string();
jbyte* rawSavedState = NULL;
jsize rawSavedSize = 0;
if (savedState != NULL) {
rawSavedState = env->GetByteArrayElements(savedState, NULL);
rawSavedSize = env->GetArrayLength(savedState);
}
code->createActivityFunc(code.get(), rawSavedState, rawSavedSize);
if (rawSavedState != NULL) {
env->ReleaseByteArrayElements(savedState, rawSavedState, 0);
}
}
return (jlong)code.release();
}
static jstring getDlError_native(JNIEnv* env, jobject clazz) {
return env->NewStringUTF(dlerror());
}
static void
unloadNativeCode_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("unloadNativeCode_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
delete code;
}
}
static void
onStart_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onStart_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onStart != NULL) {
code->callbacks.onStart(code);
}
}
}
static void
onResume_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onResume_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onResume != NULL) {
code->callbacks.onResume(code);
}
}
}
static jbyteArray
onSaveInstanceState_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onSaveInstanceState_native");
}
jbyteArray array = NULL;
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onSaveInstanceState != NULL) {
size_t len = 0;
jbyte* state = (jbyte*)code->callbacks.onSaveInstanceState(code, &len);
if (len > 0) {
array = env->NewByteArray(len);
if (array != NULL) {
env->SetByteArrayRegion(array, 0, len, state);
}
}
if (state != NULL) {
free(state);
}
}
}
return array;
}
static void
onPause_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onPause_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onPause != NULL) {
code->callbacks.onPause(code);
}
}
}
static void
onStop_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onStop_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onStop != NULL) {
code->callbacks.onStop(code);
}
}
}
static void
onConfigurationChanged_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onConfigurationChanged_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onConfigurationChanged != NULL) {
code->callbacks.onConfigurationChanged(code);
}
}
}
static void
onLowMemory_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onLowMemory_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onLowMemory != NULL) {
code->callbacks.onLowMemory(code);
}
}
}
static void
onWindowFocusChanged_native(JNIEnv* env, jobject clazz, jlong handle, jboolean focused)
{
if (kLogTrace) {
ALOGD("onWindowFocusChanged_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onWindowFocusChanged != NULL) {
code->callbacks.onWindowFocusChanged(code, focused ? 1 : 0);
}
}
}
static void
onSurfaceCreated_native(JNIEnv* env, jobject clazz, jlong handle, jobject surface)
{
if (kLogTrace) {
ALOGD("onSurfaceCreated_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
code->setSurface(surface);
if (code->nativeWindow != NULL && code->callbacks.onNativeWindowCreated != NULL) {
code->callbacks.onNativeWindowCreated(code,
code->nativeWindow.get());
}
}
}
static int32_t getWindowProp(ANativeWindow* window, int what) {
int value;
int res = window->query(window, what, &value);
return res < 0 ? res : value;
}
static void
onSurfaceChanged_native(JNIEnv* env, jobject clazz, jlong handle, jobject surface,
jint format, jint width, jint height)
{
if (kLogTrace) {
ALOGD("onSurfaceChanged_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
sp<ANativeWindow> oldNativeWindow = code->nativeWindow;
code->setSurface(surface);
if (oldNativeWindow != code->nativeWindow) {
if (oldNativeWindow != NULL && code->callbacks.onNativeWindowDestroyed != NULL) {
code->callbacks.onNativeWindowDestroyed(code,
oldNativeWindow.get());
}
if (code->nativeWindow != NULL) {
if (code->callbacks.onNativeWindowCreated != NULL) {
code->callbacks.onNativeWindowCreated(code,
code->nativeWindow.get());
}
code->lastWindowWidth = getWindowProp(code->nativeWindow.get(),
NATIVE_WINDOW_WIDTH);
code->lastWindowHeight = getWindowProp(code->nativeWindow.get(),
NATIVE_WINDOW_HEIGHT);
}
} else {
// Maybe it resized?
int32_t newWidth = getWindowProp(code->nativeWindow.get(),
NATIVE_WINDOW_WIDTH);
int32_t newHeight = getWindowProp(code->nativeWindow.get(),
NATIVE_WINDOW_HEIGHT);
if (newWidth != code->lastWindowWidth
|| newHeight != code->lastWindowHeight) {
if (code->callbacks.onNativeWindowResized != NULL) {
code->callbacks.onNativeWindowResized(code,
code->nativeWindow.get());
}
}
}
}
}
static void
onSurfaceRedrawNeeded_native(JNIEnv* env, jobject clazz, jlong handle)
{
if (kLogTrace) {
ALOGD("onSurfaceRedrawNeeded_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->nativeWindow != NULL && code->callbacks.onNativeWindowRedrawNeeded != NULL) {
code->callbacks.onNativeWindowRedrawNeeded(code, code->nativeWindow.get());
}
}
}
static void
onSurfaceDestroyed_native(JNIEnv* env, jobject clazz, jlong handle, jobject surface)
{
if (kLogTrace) {
ALOGD("onSurfaceDestroyed_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->nativeWindow != NULL && code->callbacks.onNativeWindowDestroyed != NULL) {
code->callbacks.onNativeWindowDestroyed(code,
code->nativeWindow.get());
}
code->setSurface(NULL);
}
}
static void
onInputQueueCreated_native(JNIEnv* env, jobject clazz, jlong handle, jlong queuePtr)
{
if (kLogTrace) {
ALOGD("onInputChannelCreated_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onInputQueueCreated != NULL) {
AInputQueue* queue = reinterpret_cast<AInputQueue*>(queuePtr);
code->callbacks.onInputQueueCreated(code, queue);
}
}
}
static void
onInputQueueDestroyed_native(JNIEnv* env, jobject clazz, jlong handle, jlong queuePtr)
{
if (kLogTrace) {
ALOGD("onInputChannelDestroyed_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onInputQueueDestroyed != NULL) {
AInputQueue* queue = reinterpret_cast<AInputQueue*>(queuePtr);
code->callbacks.onInputQueueDestroyed(code, queue);
}
}
}
static void
onContentRectChanged_native(JNIEnv* env, jobject clazz, jlong handle,
jint x, jint y, jint w, jint h)
{
if (kLogTrace) {
ALOGD("onContentRectChanged_native");
}
if (handle != 0) {
NativeCode* code = (NativeCode*)handle;
if (code->callbacks.onContentRectChanged != NULL) {
ARect rect;
rect.left = x;
rect.top = y;
rect.right = x+w;
rect.bottom = y+h;
code->callbacks.onContentRectChanged(code, &rect);
}
}
}
static const JNINativeMethod g_methods[] = {
{ "loadNativeCode",
"(Ljava/lang/String;Ljava/lang/String;Landroid/os/MessageQueue;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;ILandroid/content/res/AssetManager;[BLjava/lang/ClassLoader;Ljava/lang/String;)J",
(void*)loadNativeCode_native },
{ "getDlError", "()Ljava/lang/String;", (void*) getDlError_native },
{ "unloadNativeCode", "(J)V", (void*)unloadNativeCode_native },
{ "onStartNative", "(J)V", (void*)onStart_native },
{ "onResumeNative", "(J)V", (void*)onResume_native },
{ "onSaveInstanceStateNative", "(J)[B", (void*)onSaveInstanceState_native },
{ "onPauseNative", "(J)V", (void*)onPause_native },
{ "onStopNative", "(J)V", (void*)onStop_native },
{ "onConfigurationChangedNative", "(J)V", (void*)onConfigurationChanged_native },
{ "onLowMemoryNative", "(J)V", (void*)onLowMemory_native },
{ "onWindowFocusChangedNative", "(JZ)V", (void*)onWindowFocusChanged_native },
{ "onSurfaceCreatedNative", "(JLandroid/view/Surface;)V", (void*)onSurfaceCreated_native },
{ "onSurfaceChangedNative", "(JLandroid/view/Surface;III)V", (void*)onSurfaceChanged_native },
{ "onSurfaceRedrawNeededNative", "(JLandroid/view/Surface;)V", (void*)onSurfaceRedrawNeeded_native },
{ "onSurfaceDestroyedNative", "(J)V", (void*)onSurfaceDestroyed_native },
{ "onInputQueueCreatedNative", "(JJ)V",
(void*)onInputQueueCreated_native },
{ "onInputQueueDestroyedNative", "(JJ)V",
(void*)onInputQueueDestroyed_native },
{ "onContentRectChangedNative", "(JIIII)V", (void*)onContentRectChanged_native },
};
static const char* const kNativeActivityPathName = "android/app/NativeActivity";
int register_android_app_NativeActivity(JNIEnv* env)
{
//ALOGD("register_android_app_NativeActivity");
jclass clazz = FindClassOrDie(env, kNativeActivityPathName);
gNativeActivityClassInfo.finish = GetMethodIDOrDie(env, clazz, "finish", "()V");
gNativeActivityClassInfo.setWindowFlags = GetMethodIDOrDie(env, clazz, "setWindowFlags",
"(II)V");
gNativeActivityClassInfo.setWindowFormat = GetMethodIDOrDie(env, clazz, "setWindowFormat",
"(I)V");
gNativeActivityClassInfo.showIme = GetMethodIDOrDie(env, clazz, "showIme", "(I)V");
gNativeActivityClassInfo.hideIme = GetMethodIDOrDie(env, clazz, "hideIme", "(I)V");
return RegisterMethodsOrDie(env, kNativeActivityPathName, g_methods, NELEM(g_methods));
}
} // namespace android
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