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scannerlib jni 实现回调功能

This commit is contained in:
luoliangyi 2023-11-03 16:28:52 +08:00
parent 47ed82de45
commit 72dcc5813d
3 changed files with 176 additions and 1 deletions
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6
build2/qt/HGScannerLib/HGScannerLib.def
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@ -37,4 +37,8 @@ Java_com_easing_java_HGScannerLib_SaveImage
Java_com_easing_java_HGScannerLib_ReleaseImage
Java_com_easing_java_HGScannerLib_GetImageInfo
Java_com_easing_java_HGScannerLib_GetImageData
Java_com_easing_java_HGScannerLib_GetImageDpi
Java_com_easing_java_HGScannerLib_GetImageDpi
Java_com_easing_java_HGScannerLib_InitDevice
Java_com_easing_java_HGScannerLib_DeinitDevice
Java_com_easing_java_HGScannerLib_GetDeviceNameList

150
sdk/scannerlib/HGScannerLibJni.cpp
View File

@ -4,6 +4,7 @@
extern "C" JNIEXPORT jlong JNICALL Java_com_easing_java_HGScannerLib_LoadImage(
JNIEnv* env, jclass clazz, jstring filePath)
{
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_LoadImage\n");
jboolean isCopy;
@ -20,6 +21,7 @@ extern "C" JNIEXPORT jlong JNICALL Java_com_easing_java_HGScannerLib_LoadImage(
extern "C" JNIEXPORT jboolean JNICALL Java_com_easing_java_HGScannerLib_SaveImage(
JNIEnv* env, jclass clazz, jlong img, jstring filePath, jobject saveParam)
{
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_SaveImage\n");
HGLibSaveImageParam saveParam2 = {0};
@ -49,6 +51,8 @@ extern "C" JNIEXPORT jboolean JNICALL Java_com_easing_java_HGScannerLib_SaveImag
extern "C" JNIEXPORT jboolean JNICALL Java_com_easing_java_HGScannerLib_ReleaseImage(
JNIEnv* env, jclass clazz, jlong img)
{
(void)env;
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_ReleaseImage\n");
HGBool ret = HGLib_ReleaseImage((HGLibImage)img);
@ -61,6 +65,7 @@ extern "C" JNIEXPORT jboolean JNICALL Java_com_easing_java_HGScannerLib_ReleaseI
extern "C" JNIEXPORT jobject JNICALL Java_com_easing_java_HGScannerLib_GetImageInfo(
JNIEnv* env, jclass clazz, jlong img)
{
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_GetImageInfo\n");
jclass cls = env->FindClass("com/easing/java/HGLibImageInfo");
@ -86,6 +91,7 @@ extern "C" JNIEXPORT jobject JNICALL Java_com_easing_java_HGScannerLib_GetImageI
extern "C" JNIEXPORT jbyteArray JNICALL Java_com_easing_java_HGScannerLib_GetImageData(
JNIEnv* env, jclass clazz, jlong img)
{
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_GetImageData\n");
jbyteArray imgData;
@ -117,6 +123,7 @@ extern "C" JNIEXPORT jbyteArray JNICALL Java_com_easing_java_HGScannerLib_GetIma
extern "C" JNIEXPORT jobject JNICALL Java_com_easing_java_HGScannerLib_GetImageDpi(
JNIEnv* env, jclass clazz, jlong img)
{
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_GetImageDpi\n");
jclass cls = env->FindClass("com/easing/java/HGLibImageDpi");
@ -135,3 +142,146 @@ extern "C" JNIEXPORT jobject JNICALL Java_com_easing_java_HGScannerLib_GetImageD
printf("\n");
return imgDpi;
}
JavaVM *g_VMDeviceHotPlug = NULL;
jobject g_objDeviceHotPlug = NULL;
static void HGAPI DeviceHotPlugEventFunc(HGUInt event, const HGChar *deviceName, HGPointer param)
{
(void)param;
if (NULL == g_VMDeviceHotPlug)
{
return;
}
HGBool needDetach = HGFALSE;
JNIEnv *env = NULL;
//获取当前native线程是否有没有被附加到jvm环境中
int getEnvStat = g_VMDeviceHotPlug->GetEnv((void **)&env, JNI_VERSION_1_6);
if (getEnvStat == JNI_EDETACHED)
{
// 如果没有，主动附加到jvm环境中，获取到env
if (g_VMDeviceHotPlug->AttachCurrentThread((void **)&env, NULL) != 0)
{
return;
}
needDetach = HGTRUE;
}
//通过全局变量g_obj获取到要回调的类
jclass cls = env->GetObjectClass(g_objDeviceHotPlug);
if (NULL != cls)
{
jmethodID jmethodId = env->GetMethodID(cls, "onDeviceHotPlugEvent", "(ILjava/lang/String;)V");
if (NULL != jmethodId)
{
env->CallVoidMethod(g_objDeviceHotPlug, jmethodId, (jint)event, env->NewStringUTF(deviceName));
}
}
if (needDetach)
{
g_VMDeviceHotPlug->DetachCurrentThread();
}
}
extern "C" JNIEXPORT jboolean JNICALL Java_com_easing_java_HGScannerLib_InitDevice(
JNIEnv* env, jobject thiz)
{
printf("\nJava_com_easing_java_HGScannerLib_InitDevice\n");
if (NULL != g_VMDeviceHotPlug)
{
printf("Already Init Device\n");
return (jboolean)HGFALSE;
}
env->GetJavaVM(&g_VMDeviceHotPlug);
g_objDeviceHotPlug = env->NewGlobalRef(thiz);
HGBool ret = HGLib_InitDevice(DeviceHotPlugEventFunc, NULL);
printf("ret=%d\n", ret);
if (!ret)
{
env->DeleteGlobalRef(g_objDeviceHotPlug);
g_objDeviceHotPlug = NULL;
g_VMDeviceHotPlug = NULL;
}
printf("\n");
return (jboolean)ret;
}
extern "C" JNIEXPORT jboolean JNICALL Java_com_easing_java_HGScannerLib_DeinitDevice(
JNIEnv* env, jclass clazz)
{
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_DeinitDevice\n");
if (NULL == g_VMDeviceHotPlug)
{
printf("Do not Init Device yet\n");
return (jboolean)HGFALSE;
}
HGBool ret = HGLib_DeinitDevice();
printf("ret=%d\n", ret);
if (ret)
{
env->DeleteGlobalRef(g_objDeviceHotPlug);
g_objDeviceHotPlug = NULL;
g_VMDeviceHotPlug = NULL;
}
printf("\n");
return (jboolean)ret;
}
extern "C" JNIEXPORT jobjectArray JNICALL Java_com_easing_java_HGScannerLib_GetDeviceNameList(
JNIEnv* env, jclass clazz)
{
(void)clazz;
printf("\nJava_com_easing_java_HGScannerLib_GetDeviceNameList\n");
jobjectArray devNameList;
HGChar** devNameList2 = HGLib_GetDeviceNameList();
printf("devNameList=0x%p\n", devNameList2);
if (NULL != devNameList2)
{
HGUInt count = 0;
HGChar** p = devNameList2;
while (0 != *p)
{
printf("devName=%s\n", *p);
++count;
++p;
}
printf("count=%u\n", count);
jclass cls = env->FindClass("java/lang/String");
devNameList = env->NewObjectArray(count, cls, env->NewStringUTF(NULL));
HGUInt i = 0;
while (0 != devNameList2[i])
{
env->SetObjectArrayElement(devNameList, i, env->NewStringUTF(devNameList2[i]));
++i;
}
HGLib_ReleaseDeviceNameList(devNameList2);
}
else
{
printf("cound=%u\n", 0);
jclass cls = env->FindClass("java/lang/String");
devNameList = env->NewObjectArray(0, cls, env->NewStringUTF(NULL));
}
printf("\n");
return devNameList;
}

21
test/scannerlib/huagao/java/com/easing/java/HGScannerLib.java
View File

@ -33,6 +33,16 @@ public class HGScannerLib {
public native byte[] GetImageData(long img);
public native HGLibImageDpi GetImageDpi(long img);
public native boolean InitDevice();
public native boolean DeinitDevice();
public native String[] GetDeviceNameList();
public void onDeviceHotPlugEvent(int event, String deviceName) {
System.out.println("onDeviceHotPlugEvent");
System.out.println("event=" + event);
System.out.println("deviceName=" + deviceName);
}
public static void main(String[] args) throws Exception {
System.out.println("hello world");
@ -64,5 +74,16 @@ public class HGScannerLib {
System.out.println("imgData.length=" + imgData.length);
inst.ReleaseImage(img);
inst.InitDevice();
String[] devNameList = inst.GetDeviceNameList();
System.out.println("devNameList:");
for (int i = 0; i < devNameList.length; ++i)
{
System.out.println(" " + i + ":" + devNameList[i]);
}
inst.DeinitDevice();
}
}