[Development] 答复: QCamera don't capture video in android

Fri Oct 24 05:41:35 CEST 2014

OK. It is run.
I tested cv::VideoCapture, it can run in android. so your CVCaptureAndroid is can delete.
my code:
https://github.com/KangLin/rabbitim/blob/Reconstruction/Widgets/FrmVideo/CameraOpencv.h
https://github.com/KangLin/rabbitim/blob/Reconstruction/Widgets/FrmVideo/CameraOpencv.cpp

In addition, android native camera library is chosen autmatically?

At 2014-10-23 20:12:35, "Ayberk Özgür" <ayberk.ozgur at epfl.ch> wrote:
It's because you're trying to use libnative_camera_r4.0.0.so while your device is not 4.0.0. Use the closest available library; for example if your device is 4.1.2, you should use libnative_camera_r4.1.1.so. This is a limitation of relying on OpenCV Manager that keeps around the correct library for your device, but we don't want to rely on it ourselves and for now we have to manually provide the library.

On 23. 10. 14 13:38, kl222 wrote:

I use your qml-cvcamera, but the followingerroroccurs, and the programcore. Tell me It depends onwhatopencvlibrary.

D/dalvikvm(20935): Added shared lib /data/data/com.KangLinStudio.RabbitIm/lib/libQt5Xml.so 0x417d36d0

D/dalvikvm(20935): No JNI_OnLoad found in /data/data/com.KangLinStudio.RabbitIm/lib/libQt5Xml.so 0x417d36d0, skipping init

D/dalvikvm(20935): Trying to load lib /data/data/com.KangLinStudio.RabbitIm/qt-reserved-files/plugins/platforms/android/libqtforandroid.so 0x417d36d0

D/dalvikvm(20935): Added shared lib /data/data/com.KangLinStudio.RabbitIm/qt-reserved-files/plugins/platforms/android/libqtforandroid.so 0x417d36d0

I/Qt (20935): qt start

D/dalvikvm(20935): Trying to load lib /data/data/com.KangLinStudio.RabbitIm/qt-reserved-files/plugins/mediaservice/libqtmedia_android.so 0x417d36d0

D/dalvikvm(20935): Added shared lib /data/data/com.KangLinStudio.RabbitIm/qt-reserved-files/plugins/mediaservice/libqtmedia_android.so 0x417d36d0

D/dalvikvm(20935): Trying to load lib /data/data/com.KangLinStudio.RabbitIm/lib/libnative_camera_r4.0.0.so 0x417d36d0

W/System.err(20935): java.lang.reflect.InvocationTargetException

W/System.err(20935): at java.lang.reflect.Method.invokeNative(Native Method)

W/System.err(20935): at java.lang.reflect.Method.invoke(Method.java:511)

W/System.err(20935): at org.qtproject.qt5.android.bindings.QtActivity.loadApplication(QtActivity.java:248)

W/System.err(20935): at org.qtproject.qt5.android.bindings.QtActivity.startApp(QtActivity.java:649)

W/System.err(20935): at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:880)

W/System.err(20935): at android.app.Activity.performCreate(Activity.java:4479)

W/System.err(20935): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1050)

W/System.err(20935): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2041)

W/System.err(20935): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2104)

W/System.err(20935): at android.app.ActivityThread.access$600(ActivityThread.java:134)

W/System.err(20935): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)

W/System.err(20935): at android.os.Handler.dispatchMessage(Handler.java:99)

W/System.err(20935): at android.os.Looper.loop(Looper.java:154)

W/System.err(20935): at android.app.ActivityThread.main(ActivityThread.java:4624)

W/System.err(20935): at java.lang.reflect.Method.invokeNative(Native Method)

W/System.err(20935): at java.lang.reflect.Method.invoke(Method.java:511)

W/System.err(20935): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)

W/System.err(20935): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)

W/System.err(20935): at dalvik.system.NativeStart.main(Native Method)

W/System.err(20935): Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: reloc_library[1311]: 102 cannot locate '_ZN7android14SurfaceTextureC1Ejbj'...

W/System.err(20935): at java.lang.Runtime.load(Runtime.java:340)

W/System.err(20935): at java.lang.System.load(System.java:521)

W/System.err(20935): at org.qtproject.qt5.android.QtNative.loadBundledLibraries(QtNative.java:151)

W/System.err(20935): at org.qtproject.qt5.android.QtActivityDelegate.loadApplication(QtActivityDelegate.java:424)

W/System.err(20935): ... 19 more

D/ActivityThread(20935): ACT-AM_ON_RESUME_CALLED ActivityRecord{417d1810 token=android.os.BinderProxy at 417d0b00 {com.KangLinStudio.RabbitIm/org.qtproject.qt5.android.bindings.QtActivity}}

D/ActivityThread(20935): ACT-LAUNCH_ACTIVITY handled : 0 / ActivityRecord{417d1810 token=android.os.BinderProxy at 417d0b00

发件人:development-bounces+kl222=126.com at qt-project.org [mailto:development-bounces+kl222=126.com at qt-project.org] 代表 Ayberk ?zgür
发送时间: 2014年10月23日 14:47
收件人:development at qt-project.org
主题: Re: [Development] QCamera don't capture video in android

QCamera being buggy on Android is one of the reasons why we wrote qml-cvcamera. The other is support for various devices, such as Kinect and PointGrey cameras.

On 23. 10. 14 08:19, Kojo Tero wrote:

Hello,

Please take a look at the Qt bugreports.

For example this: https://bugreports.qt-project.org/browse/QTBUG-37525

Or maybe this: https://bugreports.qt-project.org/browse/QTBUG-41273

It seems that video recording on Android depends on the device manufacturer.

I suggest trying to get a log out of the device and opening a new bug (if it isn’t a known bug).

Best regards,

Tero

From:development-bounces+tero.kojo=theqtcompany.com at qt-project.org [mailto:development-bounces+tero.kojo=theqtcompany.com at qt-project.org] On Behalf Of kl222
Sent: 22. lokakuuta 2014 15:53
To:development at qt-project.org
Subject: [Development] QCamera don't capture video in android

Description

QCamera don't capture video in android. Run the attached example.

But it can work in windows and linux.

Is it bug or codeis wrong?If code is wrong, tall me how to write.

·         Environment:

operating system:android
qt version:
qt 5.3.1
qt 5.3.2
qt 5.4.0-beta1

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-- 
Ayberk Özgür, Ph.D. Student
Member of the Robotics Group in the CHILI Laboratory, EPFL
www.ayberkozgur.com

_______________________________________________
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-- 
Ayberk Özgür, Ph.D. Student
Member of the Robotics Group in the CHILI Laboratory, EPFL
www.ayberkozgur.com
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