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Trying to build an app with Qt5.12.3 and opencv4.1.2(android prebuild version from the [opencv release page][1]). But cannot get camera list by “ACameraManager_getCameraIdList”.
- Mobile : Sony xperia XA1 Ultra
- Qt: 5.12.3
- NDK : r19c
- minimum target: 24
- maximum target: 28
- Android library link to : libcamera2ndk.so and libmediandk.so, I link to the libs of api 28, not 24(android-28\arch-arm\usr\lib)
- permissions:
- arch : armeabi-v7a
Extra so files I add into the project
contains(ANDROID_TARGET_ARCH, armeabi-v7a) {
ANDROID_EXTRA_LIBS = \
C:/Users/yyyy/programs/Qt/android_camera/../../../3rdLibs/Android/android-ndk-r19c-windows-x86_64/android-ndk-r19c/platforms/android-28/arch-arm/usr/lib/libcamera2ndk.so \
C:/Users/yyyy/programs/Qt/android_camera/../../../3rdLibs/Android/android-ndk-r19c-windows-x86_64/android-ndk-r19c/platforms/android-28/arch-arm/usr/lib/libmediandk.so \
C:/Users/yyyy/programs/Qt/android_camera/../../../3rdLibs/opencv/opencv_4.1.2-android-sdk/sdk/native/libs/armeabi-v7a/libopencv_java4.so
}
Source codes:
#include <QApplication>
#include <FelgoApplication>
#include <QQmlApplicationEngine>
#ifdef Q_OS_ANDROID
#include <android/log.h>
#include <camera/NdkCameraManager.h>
#include <QDebug>
//without this handler, debug message cannot print
void myMessageHandler(
QtMsgType type,
const QMessageLogContext& context,
const QString& msg
)
{
const char*const applicationName="android_camera";
QString report=msg;
if (context.file && !QString(context.file).isEmpty()) {
report+=" in file ";
report+=QString(context.file);
report+=" line ";
report+=QString::number(context.line);
}
if (context.function && !QString(context.function).isEmpty()) {
report+=+" function ";
report+=QString(context.function);
}
const char*const local=report.toLocal8Bit().constData();
switch (type) {
case QtDebugMsg:
__android_log_write(ANDROID_LOG_DEBUG,applicationName,local);
break;
case QtInfoMsg:
__android_log_write(ANDROID_LOG_INFO,applicationName,local);
break;
case QtWarningMsg:
__android_log_write(ANDROID_LOG_WARN,applicationName,local);
break;
case QtCriticalMsg:
__android_log_write(ANDROID_LOG_ERROR,applicationName,local);
break;
case QtFatalMsg:
default:
__android_log_write(ANDROID_LOG_FATAL,applicationName,local);
abort();
}
}
#endif
int main(int argc, char *argv[]){
QApplication app(argc, argv);
#ifdef Q_OS_ANDROID
qInstallMessageHandler(myMessageHandler);
#endif
FelgoApplication felgo;
felgo.setPreservePlatformFonts(true);
QQmlApplicationEngine engine;
felgo.initialize(&engine);
felgo.setLicenseKey(PRODUCT_LICENSE_KEY);
felgo.setMainQmlFileName(QStringLiteral("qml/Main.qml"));
engine.load(QUrl(felgo.mainQmlFileName()));
qInfo()<<__func__<<"create camera manager";
ACameraManager *camera_manager_ = ACameraManager_create();
if(camera_manager_){
qInfo()<<__func__<<"get camera ids";
ACameraIdList *camera_ids = nullptr;
auto const status = ACameraManager_getCameraIdList(camera_manager_, &camera_ids);
qInfo()<<__func__<<"can get camera ids:"<<(camera_ids != nullptr)<<", status:"<<status;
if(camera_ids){
qInfo()<<__func__<<"camera number:"<<camera_ids->numCameras;
}
}else{
qInfo()<<__func__<<"cannot create camera manager";
}
return app.exec();
}
Edit : Edit : Error code returned by ACameraManager_getCameraIdList is -870323804, none of the value of NdkCameraError.h looks like that, weird
