aosp12/system/teeui/libteeui_jni/libteeui_jni.cpp

255 lines
10 KiB
C++

/*
*
* Copyright 2019, 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.
*/
#include <jni.h>
#include <teeui/example/example.h>
#include <teeui/localization/ConfirmationUITranslations.h>
using teeui::localization::getLanguages;
/*
* JTypeTraits provides hints for JArray on how to access and free the array elements and how
* to get the array size. The traits allow JArray to be used with jbyteArray, jintArray,
* and jstring.
*/
template <typename T> struct JTypeTraits;
template <> struct JTypeTraits<jintArray> {
using element_type = jint;
using array_type = jintArray;
static constexpr element_type* (JNIEnv::*const getArrayElements)(array_type, jboolean*) =
&JNIEnv::GetIntArrayElements;
static constexpr void (JNIEnv::*const releaseArrayElements)(array_type, element_type*, jint) =
&JNIEnv::ReleaseIntArrayElements;
static constexpr jsize (JNIEnv::*const getArrayLength)(jarray) = &JNIEnv::GetArrayLength;
};
template <> struct JTypeTraits<jbyteArray> {
using element_type = jbyte;
using array_type = jbyteArray;
static constexpr element_type* (JNIEnv::*const getArrayElements)(array_type, jboolean*) =
&JNIEnv::GetByteArrayElements;
static constexpr void (JNIEnv::*const releaseArrayElements)(array_type, element_type*, jint) =
&JNIEnv::ReleaseByteArrayElements;
static constexpr jsize (JNIEnv::*const getArrayLength)(jarray) = &JNIEnv::GetArrayLength;
};
template <> struct JTypeTraits<jstring> {
using element_type = const char;
using array_type = jstring;
static constexpr element_type* (JNIEnv::*const getArrayElements)(array_type, jboolean*) =
&JNIEnv::GetStringUTFChars;
static constexpr void (JNIEnv::*const releaseArrayElements)(array_type, element_type*) =
&JNIEnv::ReleaseStringUTFChars;
static constexpr jsize (JNIEnv::*const getArrayLength)(array_type) =
&JNIEnv::GetStringUTFLength;
};
/*
* JArray can wrap various types of primitive Java arrays through a common typical C++ interface.
* It tracks ownership. It can only be moved but not copied. It provides iterators through begin()
* and end() so that it can be used in range for loops.
*/
template <typename T> class JArray {
private:
JNIEnv* env_;
using element_type = typename JTypeTraits<T>::element_type;
using array_type = typename JTypeTraits<T>::array_type;
array_type jarray_;
element_type* buffer_;
public:
JArray(JNIEnv* env, array_type jarray) : env_(env), jarray_(jarray), buffer_(nullptr) {
if (env_ == nullptr) return;
buffer_ = (env_->*JTypeTraits<T>::getArrayElements)(jarray, nullptr);
}
JArray(const JArray&) = delete;
JArray(JArray&& rhs) : env_(rhs.env_), jarray_(rhs.jarray_), buffer_(rhs.buffer_) {
rhs.env_ = nullptr;
rhs.buffer_ = nullptr;
}
~JArray();
JArray& operator=(const JArray&) = delete;
JArray& operator=(JArray&& rhs) {
if (&rhs != this) {
env_ = rhs.env_;
jarray_ = rhs.jarray_;
buffer_ = rhs.buffer_;
rhs.env_ = nullptr;
rhs.buffer_ = nullptr;
}
return *this;
}
operator bool() const { return buffer_ != nullptr; }
const jint& operator[](size_t offset) const { return buffer_[offset]; }
element_type& operator[](size_t offset) { return buffer_[offset]; }
size_t size() const { return (env_->*JTypeTraits<T>::getArrayLength)(jarray_); }
element_type* begin() { return buffer_; }
element_type* end() { return buffer_ + size(); }
const element_type* begin() const { return buffer_; }
const element_type* end() const { return buffer_ + size(); }
};
template <typename T> JArray<T>::~JArray() {
if (env_ == nullptr) return;
if (buffer_ == nullptr) return;
(env_->*JTypeTraits<T>::releaseArrayElements)(jarray_, buffer_, 0);
}
template <> JArray<jstring>::~JArray() {
if (env_ == nullptr) return;
if (buffer_ == nullptr) return;
(env_->*JTypeTraits<jstring>::releaseArrayElements)(jarray_, buffer_);
}
using JIntArray = JArray<jintArray>;
using JByteArray = JArray<jbyteArray>;
using JString = JArray<jstring>;
static std::unique_ptr<teeui::example::ITeeuiExample> sCurrentExample;
/*
* Class: com_android_framebufferizer_NativeRenderer
* Method: setDeviceInfo
* Signature: (Lcom/android/framebufferizer/utils/DeviceInfo;ZZLjava/lang/String;)I
*/
extern "C" JNIEXPORT jint JNICALL Java_com_android_framebufferizer_NativeRenderer_setDeviceInfo(
JNIEnv* env, jclass, jobject jDeviceInfo, jboolean magnified, jboolean inverted,
jstring layout_type) {
JString layout(env, layout_type);
using namespace teeui::example;
jclass cDeviceInfo = env->FindClass("Lcom/android/framebufferizer/utils/DeviceInfo;");
jmethodID method = env->GetMethodID(cDeviceInfo, "getWidthPx", "()I");
DeviceInfo device_info;
device_info.width_ = env->CallIntMethod(jDeviceInfo, method);
method = env->GetMethodID(cDeviceInfo, "getHeightPx", "()I");
device_info.height_ = env->CallIntMethod(jDeviceInfo, method);
method = env->GetMethodID(cDeviceInfo, "getDp2px", "()D");
device_info.dp2px_ = env->CallDoubleMethod(jDeviceInfo, method);
method = env->GetMethodID(cDeviceInfo, "getMm2px", "()D");
device_info.mm2px_ = env->CallDoubleMethod(jDeviceInfo, method);
method = env->GetMethodID(cDeviceInfo, "getPowerButtonTopMm", "()D");
device_info.powerButtonTopMm_ = env->CallDoubleMethod(jDeviceInfo, method);
method = env->GetMethodID(cDeviceInfo, "getPowerButtonBottomMm", "()D");
device_info.powerButtonBottomMm_ = env->CallDoubleMethod(jDeviceInfo, method);
method = env->GetMethodID(cDeviceInfo, "getVolUpButtonTopMm", "()D");
device_info.volUpButtonTopMm_ = env->CallDoubleMethod(jDeviceInfo, method);
method = env->GetMethodID(cDeviceInfo, "getVolUpButtonBottomMm", "()D");
device_info.volUpButtonBottomMm_ = env->CallDoubleMethod(jDeviceInfo, method);
sCurrentExample =
createExample((strcmp(layout.begin(), kTouchButtonLayout) == 0) ? Examples::TouchButton
: Examples::PhysButton);
return sCurrentExample->setDeviceInfo(device_info, magnified, inverted);
}
/*
* Class: com_android_framebufferizer_NativeRenderer
* Method: renderBuffer
* Signature: (IIIII[I)I
*/
extern "C" JNIEXPORT jint JNICALL Java_com_android_framebufferizer_NativeRenderer_renderBuffer(
JNIEnv* env, jclass, jint x, jint y, jint width, jint height, jint lineStride,
jintArray jbuffer) {
JIntArray buffer(env, jbuffer);
using namespace teeui::example;
if (!buffer) return kFrameBufferError;
if (!sCurrentExample) return kLayoutExampleError;
return sCurrentExample->renderUIIntoBuffer((uint32_t)x, (uint32_t)y, (uint32_t)width,
(uint32_t)height, (uint32_t)lineStride,
(uint32_t*)buffer.begin(), buffer.size());
}
/*
* Class: com_android_confirmationui_Translation_selectLangID
* Method: selectLangID
* Signature: (Ljava/lang/String;)V
*/
extern "C" JNIEXPORT void JNICALL
Java_com_android_framebufferizer_NativeRenderer_setLanguage(JNIEnv* env, jclass, jstring jlang_id) {
JString lang_id(env, jlang_id);
if (sCurrentExample) sCurrentExample->selectLanguage(lang_id.begin());
}
/*
* Class: com_android_confirmationui_Translation_selectLangID
* Method: selectLangID
* Signature: ()[Ljava/lang/String;
*/
extern "C" JNIEXPORT jobjectArray JNICALL
Java_com_android_framebufferizer_NativeRenderer_getLanguageIdList(JNIEnv* env, jclass) {
jobjectArray language_ids;
teeui::localization::Languages lang_list = getLanguages();
const char* const* native_data = lang_list.list;
size_t list_size = lang_list.size;
language_ids = (jobjectArray)env->NewObjectArray(list_size, env->FindClass("java/lang/String"),
env->NewStringUTF(""));
for (size_t i = 0; i < list_size; i++)
env->SetObjectArrayElement(language_ids, i, env->NewStringUTF(native_data[i]));
return language_ids;
}
/*
* Class: com_android_framebufferizer_NativeRenderer
* Method: getAvailableLayouts
* Signature: ()[Ljava/lang/String;
*/
extern "C" JNIEXPORT jobjectArray JNICALL
Java_com_android_framebufferizer_NativeRenderer_getAvailableLayouts(JNIEnv* env, jclass) {
using namespace teeui::example;
jobjectArray available_layouts;
const char* const* native_data = kAvailableLayouts;
size_t list_size = NUM_LAYOUTS;
available_layouts = (jobjectArray)env->NewObjectArray(
list_size, env->FindClass("java/lang/String"), env->NewStringUTF(""));
for (size_t i = 0; i < list_size; i++)
env->SetObjectArrayElement(available_layouts, i, env->NewStringUTF(native_data[i]));
return available_layouts;
}
/*
* Class: com_android_framebufferizer_NativeRenderer
* Method: setConfimationMessage
* Signature: (Ljava/lang/String;)V
*/
extern "C" JNIEXPORT void JNICALL
Java_com_android_framebufferizer_NativeRenderer_setConfimationMessage(
JNIEnv* env, jclass, jstring jConfirmationMessage) {
JString confirmationMessage(env, jConfirmationMessage);
if (sCurrentExample) sCurrentExample->setConfirmationMessage(confirmationMessage.begin());
}
/*
* Class: com_android_framebufferizer_NativeRenderer
* Method: onEvent
* Signature: (III)I
*/
extern "C" JNIEXPORT jint JNICALL Java_com_android_framebufferizer_NativeRenderer_onEvent(
JNIEnv*, jclass, jint x, jint y, jint event) {
if (sCurrentExample) {
return (jint)sCurrentExample->onEvent((uint32_t)x, (uint32_t)y, (uint32_t)event);
}
return 0;
}