I know that VideoCapture runs on Android by itself. There are good
reasons why I forked CvCapture_Android (horrible Android backend for
VideoCapture) and wrote CVCaptureAndroid. If you want to see how bad is
the original, try to run VideoCapture by itself on Android, you will see
that it' not even capable of delivering 30 FPS due to color space
conversions. This is to conform to the even more horrible and
undocumented VideoCapture API where a lot of performance is traded away
for a bit of simplicity.
About the native camera libs, see the Android build notes here:
https://github.com/chili-epfl/qml-cvcamera/blob/master/samples/README.md.
On 24. 10. 14 05:41, kl222 wrote:
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.oz...@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@417d0b00
{com.KangLinStudio.RabbitIm/org.qtproject.qt5.android.bindings.QtActivity}}
D/ActivityThread(20935): ACT-LAUNCH_ACTIVITY handled : 0 /
ActivityRecord{417d1810 token=android.os.BinderProxy@417d0b00
<mailto:token=android.os.BinderProxy@417d0b00>
*发件人:*development-bounces+kl222=126....@qt-project.org
[mailto:development-bounces+kl222=126....@qt-project.org] *代表
*Ayberk ?zgür
*发送时间:*2014年10月23日14:47
*收件人:*development@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....@qt-project.org
<mailto:development-bounces+tero.kojo=theqtcompany....@qt-project.org>[mailto:development-bounces+tero.kojo=theqtcompany....@qt-project.org]
*On Behalf Of *kl222
*Sent:* 22. lokakuuta 2014 15:53
*To:* development@qt-project.org
<mailto:development@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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Development mailing list
Development@qt-project.org <mailto:Development@qt-project.org>
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--
Ayberk Özgür, Ph.D. Student
Member of the Robotics Group in the CHILI Laboratory, EPFL
www.ayberkozgur.com <http://www.ayberkozgur.com>
_______________________________________________
Development mailing list
Development@qt-project.org
http://lists.qt-project.org/mailman/listinfo/development
--
Ayberk Özgür, Ph.D. Student
Member of the Robotics Group in the CHILI Laboratory, EPFL
www.ayberkozgur.com
--
Ayberk Özgür, Ph.D. Student
Member of the Robotics Group in the CHILI Laboratory, EPFL
www.ayberkozgur.com
_______________________________________________
Development mailing list
Development@qt-project.org
http://lists.qt-project.org/mailman/listinfo/development
