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Posted to bluesky-user@incubator.apache.org by Suresh Rajagopal <su...@newconceptict.com> on 2009/09/02 06:02:16 UTC
Blue sky Real Class System Problem
Dear Blue sky Support Team
Am Suresh as i try to install Real Class system in my machine, That time am
facing some problem for web cam connection.
As am using logitech web cam in my system, i tested this web cam in skype
an gmail video chat its working fine.
I started Successfully TServer, DTU everything is working fine. after i
started teacher client system that also started successfully.
When we are trying to create class through teacher client system again am
getting error, *Error 022: No video Equipment Found
Information 022: Please check Whether Video Equipment Ready *, please assist
me why this error showing.
This is the log file when am trying to start Teacher client system am
getting this error also.
message lenth is 144
teachloginr.ResponseType 0
teachloginr.TeacherID 4
get group name is class
message lenth is 36
create class OK!
MCU ip is 192.168.0.100
MCU port is 10002,10000
/root/kejian/2009_08_31_18_40
CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
query was successful
this device can capture video to memory
ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int) ((xcb_
req) - (dpy->request)) >= 0)' failed.
Aborted
--
Suresh | Senior Programmer,
The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
Delhi| 110076.
Phone: 011 29943221 (Direct) | Mobile: 9958824524
Website: www.newconceptict.com
Re: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
2009/9/4 Suresh Rajagopal <su...@newconceptict.com>
> As my suggestion for Blue sky Development Team
>
>
> - Make it user manual and installation guide as user friendly and very
> clear
>
We make the manual and installation guide based on the assumption that
users are familiar with Ubuntu. Any of RealClass team or people who could
get along well with Ubuntu could easily handle the system. Of course we will
update the manual and installation guide, and we will also update the
solution package so that it is easier to install.
> - System requirements also not fully mentioned, *drawbacks:* all web cam
> not supporting blue sky real class system really this is very big
> drawback.
>
yep, that's our mistake. I just put "compatiable webcam" , but didn't
mention that webcams which don't support V4L2 can't be used in our system.
we will update that soon.
> - Even don't know how to start voice chat through real class system.
>
Actually, once the system start, you can hear the voice of teacher in
student client. And student and teacher could talk to each other when the
student is selected as "focus student". Before that you should make sure
that your mic works, i think that belongs to configuration of mic, it is
easy to find when you search it on google.
> - Some times system not properly running teacher client sent message to
> student silent , some times its not receiving message at all.
>
that sounds like a bug, but seldom did we met this problem in our lab,
please report the detail. I guess that also may cause by the degree you
getting familiar with our system.
> - This system entirely not that much user friendly , when starting
> teacher client and student client commands need to be run in steed of
> commands we can give some exe files, when user clicks this file system
> will
> run automatically.
>
>
1. Currently, the members of RealClass team are not the initial
developers of RealClass system. The initial are not sophisticated with
interface design, so do we.... And we now focus on two things: First
release of RealClass on Apache; developing the next version of
RealClass--p2p version. We would not make second development on current
version of RealClass;
2. Actually, you can start the system by clicking the file like
"ncteacher" in /src directory......, you may also make a link in the
desktop like you do in windows........
3. I think that you need to learn some basic operations or fundamental
knowledge of Ubuntu....
These all are problem as i faced post few days, please include these futures
> in blue sky real class system, then its look some thing effective.
>
> Regards
> Suresh
>
> Thanks for your feed back, that contribute to the revolve of our system.
regards,
Kevin
> On Fri, Sep 4, 2009 at 9:58 AM, Suresh Rajagopal
> <su...@newconceptict.com>wrote:
>
> >
> > Thanks i will check this link.
> >
> >
> > On Fri, Sep 4, 2009 at 8:04 AM, Samuel Kevin <lovesummerf@gmail.com
> >wrote:
> >
> >> hi, Suresh:
> >> check this out. i guess this may help.
> http://qce-ga.sourceforge.net/.
> >>
> >> regards,
> >> Kevin
> >>
> >> 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> >>
> >> > Dear Support Team
> >> >
> >> > Please see this following error, when am creating class through
> Teacher
> >> > client system am getting this error, please assist me.
> >> >
> >> > Error:screen's resolution is big!
> >> > message lenth is 144
> >> > teachloginr.ResponseType 0
> >> > teachloginr.TeacherID 2
> >> > get group name is class
> >> > message lenth is 36
> >> > create class OK!
> >> > MCU ip is 192.168.0.100
> >> > MCU port is 10004,10002
> >> > /root/kejian/2009_09_03_15_18
> >> > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> >> > query was successful
> >> > this device can capture video to memory
> >> > (ncteacher:7069): GLib-GObject-CRITICAL **: g_object_ref: assertion
> >> > `object->ref_count > 0' failed
> >> > (ncteacher:7069): Gtk-CRITICAL **: _gtk_style_peek_property_value:
> >> > assertion
> >> > `GTK_IS_STYLE (style)' failed
> >> > Segmentation fault
> >> >
> >> >
> >> >
> >> >
> >> > Thanks
> >> > Suresh
> >> >
> >> > On Thu, Sep 3, 2009 at 2:20 PM, Samuel Kevin <lo...@gmail.com>
> >> > wrote:
> >> >
> >> > > just a minute Suresh, we are digging into the error. Usually, we
> only
> >> see
> >> > > this error when we don't plug in the web cam.......
> >> > >
> >> > > 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> >> > >
> >> > > > Dear Blue Sky Support Team
> >> > > >
> >> > > > As i checked as you mentioned instruction wise, everything is
> >> working
> >> > > fine,
> >> > > > i can able to access the web cam through ekiga, web cam support
> V4L
> >> > also,
> >> > > > but when am starting teacher client again am getting same error
> >> only,
> >> > can
> >> > > > you please check this issue very urgent basis.
> >> > > >
> >> > > > Thanks
> >> > > > Suresh
> >> > > >
> >> > > > On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <
> >> lovesummerf@gmail.com>
> >> > > > wrote:
> >> > > >
> >> > > > > Hi, Suresh:
> >> > > > > [1]: are you using skype on windows to test the availablity
> of
> >> > > > webcam?
> >> > > > > [2]: have you tried Ekiga to see if the web cam support V4L
> >> and
> >> > > run?
> >> > > > > [3]:if [2] has been proved ok, you can start up Student
> >> client,
> >> > > just
> >> > > > > click "my view", you would see the image;
> >> > > > > regards,
> >> > > > > Kevin
> >> > > > >
> >> > > > > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> >> > > > >
> >> > > > > > Dear Blue sky Support Team
> >> > > > > >
> >> > > > > > Am Suresh as i try to install Real Class system in my machine,
> >> That
> >> > > > time
> >> > > > > am
> >> > > > > > facing some problem for web cam connection.
> >> > > > > >
> >> > > > > > As am using logitech web cam in my system, i tested this web
> cam
> >> > in
> >> > > > > skype
> >> > > > > > an gmail video chat its working fine.
> >> > > > > >
> >> > > > > > I started Successfully TServer, DTU everything is working
> fine.
> >> > after
> >> > > i
> >> > > > > > started teacher client system that also started successfully.
> >> > > > > >
> >> > > > > > When we are trying to create class through teacher client
> >> system
> >> > > again
> >> > > > > am
> >> > > > > > getting error, *Error 022: No video Equipment Found
> >> > > > > > Information 022: Please check Whether Video Equipment Ready *,
> >> > please
> >> > > > > > assist
> >> > > > > > me why this error showing.
> >> > > > > >
> >> > > > > >
> >> > > > > > This is the log file when am trying to start Teacher client
> >> system
> >> > am
> >> > > > > > getting this error also.
> >> > > > > >
> >> > > > > > message lenth is 144
> >> > > > > > teachloginr.ResponseType 0
> >> > > > > > teachloginr.TeacherID 4
> >> > > > > > get group name is class
> >> > > > > > message lenth is 36
> >> > > > > > create class OK!
> >> > > > > > MCU ip is 192.168.0.100
> >> > > > > > MCU port is 10002,10000
> >> > > > > > /root/kejian/2009_08_31_18_40
> >> > > > > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> >> > > > > > query was successful
> >> > > > > > this device can capture video to memory
> >> > > > > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion
> >> > `((int)
> >> > > > > > ((xcb_
> >> > > > > > req) - (dpy->request)) >= 0)' failed.
> >> > > > > > Aborted
> >> > > > > >
> >> > > > > >
> >> > > > > > --
> >> > > > > > Suresh | Senior Programmer,
> >> > > > > > The ICT and Web Group | New Concept Information Systems Pvt.
> Ltd
> >> |
> >> > > New
> >> > > > > > Delhi| 110076.
> >> > > > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> >> > > > > > Website: www.newconceptict.com
> >> > > > > >
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > > --
> >> > > > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> >> > > > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network
> >> Tech
> >> > > > > http://incubator.apache.org/bluesky/
> >> > > > >
> >> > > >
> >> > > >
> >> > > >
> >> > > > --
> >> > > > Suresh | Senior Programmer,
> >> > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd |
> >> New
> >> > > > Delhi| 110076.
> >> > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> >> > > > Website: www.newconceptict.com
> >> > > >
> >> > >
> >> > >
> >> > >
> >> > > --
> >> > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> >> > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> >> > > http://incubator.apache.org/bluesky/
> >> > >
> >> >
> >> >
> >> >
> >> > --
> >> > Suresh | Senior Programmer,
> >> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> >> > Delhi| 110076.
> >> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> >> > Website: www.newconceptict.com
> >> >
> >>
> >>
> >>
> >> --
> >> Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> >> Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> >> http://incubator.apache.org/bluesky/
> >>
> >
> >
> >
> > --
> > Suresh | Senior Programmer,
> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > Delhi| 110076.
> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > Website: www.newconceptict.com
> >
>
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/
Re: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
2009/9/4 Suresh Rajagopal <su...@newconceptict.com>
> As my suggestion for Blue sky Development Team
>
>
> - Make it user manual and installation guide as user friendly and very
> clear
>
We make the manual and installation guide based on the assumption that
users are familiar with Ubuntu. Any of RealClass team or people who could
get along well with Ubuntu could easily handle the system. Of course we will
update the manual and installation guide, and we will also update the
solution package so that it is easier to install.
> - System requirements also not fully mentioned, *drawbacks:* all web cam
> not supporting blue sky real class system really this is very big
> drawback.
>
yep, that's our mistake. I just put "compatiable webcam" , but didn't
mention that webcams which don't support V4L2 can't be used in our system.
we will update that soon.
> - Even don't know how to start voice chat through real class system.
>
Actually, once the system start, you can hear the voice of teacher in
student client. And student and teacher could talk to each other when the
student is selected as "focus student". Before that you should make sure
that your mic works, i think that belongs to configuration of mic, it is
easy to find when you search it on google.
> - Some times system not properly running teacher client sent message to
> student silent , some times its not receiving message at all.
>
that sounds like a bug, but seldom did we met this problem in our lab,
please report the detail. I guess that also may cause by the degree you
getting familiar with our system.
> - This system entirely not that much user friendly , when starting
> teacher client and student client commands need to be run in steed of
> commands we can give some exe files, when user clicks this file system
> will
> run automatically.
>
>
1. Currently, the members of RealClass team are not the initial
developers of RealClass system. The initial are not sophisticated with
interface design, so do we.... And we now focus on two things: First
release of RealClass on Apache; developing the next version of
RealClass--p2p version. We would not make second development on current
version of RealClass;
2. Actually, you can start the system by clicking the file like
"ncteacher" in /src directory......, you may also make a link in the
desktop like you do in windows........
3. I think that you need to learn some basic operations or fundamental
knowledge of Ubuntu....
These all are problem as i faced post few days, please include these futures
> in blue sky real class system, then its look some thing effective.
>
> Regards
> Suresh
>
> Thanks for your feed back, that contribute to the revolve of our system.
regards,
Kevin
> On Fri, Sep 4, 2009 at 9:58 AM, Suresh Rajagopal
> <su...@newconceptict.com>wrote:
>
> >
> > Thanks i will check this link.
> >
> >
> > On Fri, Sep 4, 2009 at 8:04 AM, Samuel Kevin <lovesummerf@gmail.com
> >wrote:
> >
> >> hi, Suresh:
> >> check this out. i guess this may help.
> http://qce-ga.sourceforge.net/.
> >>
> >> regards,
> >> Kevin
> >>
> >> 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> >>
> >> > Dear Support Team
> >> >
> >> > Please see this following error, when am creating class through
> Teacher
> >> > client system am getting this error, please assist me.
> >> >
> >> > Error:screen's resolution is big!
> >> > message lenth is 144
> >> > teachloginr.ResponseType 0
> >> > teachloginr.TeacherID 2
> >> > get group name is class
> >> > message lenth is 36
> >> > create class OK!
> >> > MCU ip is 192.168.0.100
> >> > MCU port is 10004,10002
> >> > /root/kejian/2009_09_03_15_18
> >> > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> >> > query was successful
> >> > this device can capture video to memory
> >> > (ncteacher:7069): GLib-GObject-CRITICAL **: g_object_ref: assertion
> >> > `object->ref_count > 0' failed
> >> > (ncteacher:7069): Gtk-CRITICAL **: _gtk_style_peek_property_value:
> >> > assertion
> >> > `GTK_IS_STYLE (style)' failed
> >> > Segmentation fault
> >> >
> >> >
> >> >
> >> >
> >> > Thanks
> >> > Suresh
> >> >
> >> > On Thu, Sep 3, 2009 at 2:20 PM, Samuel Kevin <lo...@gmail.com>
> >> > wrote:
> >> >
> >> > > just a minute Suresh, we are digging into the error. Usually, we
> only
> >> see
> >> > > this error when we don't plug in the web cam.......
> >> > >
> >> > > 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> >> > >
> >> > > > Dear Blue Sky Support Team
> >> > > >
> >> > > > As i checked as you mentioned instruction wise, everything is
> >> working
> >> > > fine,
> >> > > > i can able to access the web cam through ekiga, web cam support
> V4L
> >> > also,
> >> > > > but when am starting teacher client again am getting same error
> >> only,
> >> > can
> >> > > > you please check this issue very urgent basis.
> >> > > >
> >> > > > Thanks
> >> > > > Suresh
> >> > > >
> >> > > > On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <
> >> lovesummerf@gmail.com>
> >> > > > wrote:
> >> > > >
> >> > > > > Hi, Suresh:
> >> > > > > [1]: are you using skype on windows to test the availablity
> of
> >> > > > webcam?
> >> > > > > [2]: have you tried Ekiga to see if the web cam support V4L
> >> and
> >> > > run?
> >> > > > > [3]:if [2] has been proved ok, you can start up Student
> >> client,
> >> > > just
> >> > > > > click "my view", you would see the image;
> >> > > > > regards,
> >> > > > > Kevin
> >> > > > >
> >> > > > > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> >> > > > >
> >> > > > > > Dear Blue sky Support Team
> >> > > > > >
> >> > > > > > Am Suresh as i try to install Real Class system in my machine,
> >> That
> >> > > > time
> >> > > > > am
> >> > > > > > facing some problem for web cam connection.
> >> > > > > >
> >> > > > > > As am using logitech web cam in my system, i tested this web
> cam
> >> > in
> >> > > > > skype
> >> > > > > > an gmail video chat its working fine.
> >> > > > > >
> >> > > > > > I started Successfully TServer, DTU everything is working
> fine.
> >> > after
> >> > > i
> >> > > > > > started teacher client system that also started successfully.
> >> > > > > >
> >> > > > > > When we are trying to create class through teacher client
> >> system
> >> > > again
> >> > > > > am
> >> > > > > > getting error, *Error 022: No video Equipment Found
> >> > > > > > Information 022: Please check Whether Video Equipment Ready *,
> >> > please
> >> > > > > > assist
> >> > > > > > me why this error showing.
> >> > > > > >
> >> > > > > >
> >> > > > > > This is the log file when am trying to start Teacher client
> >> system
> >> > am
> >> > > > > > getting this error also.
> >> > > > > >
> >> > > > > > message lenth is 144
> >> > > > > > teachloginr.ResponseType 0
> >> > > > > > teachloginr.TeacherID 4
> >> > > > > > get group name is class
> >> > > > > > message lenth is 36
> >> > > > > > create class OK!
> >> > > > > > MCU ip is 192.168.0.100
> >> > > > > > MCU port is 10002,10000
> >> > > > > > /root/kejian/2009_08_31_18_40
> >> > > > > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> >> > > > > > query was successful
> >> > > > > > this device can capture video to memory
> >> > > > > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion
> >> > `((int)
> >> > > > > > ((xcb_
> >> > > > > > req) - (dpy->request)) >= 0)' failed.
> >> > > > > > Aborted
> >> > > > > >
> >> > > > > >
> >> > > > > > --
> >> > > > > > Suresh | Senior Programmer,
> >> > > > > > The ICT and Web Group | New Concept Information Systems Pvt.
> Ltd
> >> |
> >> > > New
> >> > > > > > Delhi| 110076.
> >> > > > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> >> > > > > > Website: www.newconceptict.com
> >> > > > > >
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > > --
> >> > > > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> >> > > > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network
> >> Tech
> >> > > > > http://incubator.apache.org/bluesky/
> >> > > > >
> >> > > >
> >> > > >
> >> > > >
> >> > > > --
> >> > > > Suresh | Senior Programmer,
> >> > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd |
> >> New
> >> > > > Delhi| 110076.
> >> > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> >> > > > Website: www.newconceptict.com
> >> > > >
> >> > >
> >> > >
> >> > >
> >> > > --
> >> > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> >> > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> >> > > http://incubator.apache.org/bluesky/
> >> > >
> >> >
> >> >
> >> >
> >> > --
> >> > Suresh | Senior Programmer,
> >> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> >> > Delhi| 110076.
> >> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> >> > Website: www.newconceptict.com
> >> >
> >>
> >>
> >>
> >> --
> >> Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> >> Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> >> http://incubator.apache.org/bluesky/
> >>
> >
> >
> >
> > --
> > Suresh | Senior Programmer,
> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > Delhi| 110076.
> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > Website: www.newconceptict.com
> >
>
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/
Re: Blue sky Real Class System Problem
Posted by Suresh Rajagopal <su...@newconceptict.com>.
As my suggestion for Blue sky Development Team
- Make it user manual and installation guide as user friendly and very
clear
- System requirements also not fully mentioned, *drawbacks:* all web cam
not supporting blue sky real class system really this is very big drawback.
- Even don't know how to start voice chat through real class system.
- Some times system not properly running teacher client sent message to
student silent , some times its not receiving message at all.
- This system entirely not that much user friendly , when starting
teacher client and student client commands need to be run in steed of
commands we can give some exe files, when user clicks this file system will
run automatically.
These all are problem as i faced post few days, please include these futures
in blue sky real class system, then its look some thing effective.
Regards
Suresh
On Fri, Sep 4, 2009 at 9:58 AM, Suresh Rajagopal
<su...@newconceptict.com>wrote:
>
> Thanks i will check this link.
>
>
> On Fri, Sep 4, 2009 at 8:04 AM, Samuel Kevin <lo...@gmail.com>wrote:
>
>> hi, Suresh:
>> check this out. i guess this may help. http://qce-ga.sourceforge.net/.
>>
>> regards,
>> Kevin
>>
>> 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
>>
>> > Dear Support Team
>> >
>> > Please see this following error, when am creating class through Teacher
>> > client system am getting this error, please assist me.
>> >
>> > Error:screen's resolution is big!
>> > message lenth is 144
>> > teachloginr.ResponseType 0
>> > teachloginr.TeacherID 2
>> > get group name is class
>> > message lenth is 36
>> > create class OK!
>> > MCU ip is 192.168.0.100
>> > MCU port is 10004,10002
>> > /root/kejian/2009_09_03_15_18
>> > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
>> > query was successful
>> > this device can capture video to memory
>> > (ncteacher:7069): GLib-GObject-CRITICAL **: g_object_ref: assertion
>> > `object->ref_count > 0' failed
>> > (ncteacher:7069): Gtk-CRITICAL **: _gtk_style_peek_property_value:
>> > assertion
>> > `GTK_IS_STYLE (style)' failed
>> > Segmentation fault
>> >
>> >
>> >
>> >
>> > Thanks
>> > Suresh
>> >
>> > On Thu, Sep 3, 2009 at 2:20 PM, Samuel Kevin <lo...@gmail.com>
>> > wrote:
>> >
>> > > just a minute Suresh, we are digging into the error. Usually, we only
>> see
>> > > this error when we don't plug in the web cam.......
>> > >
>> > > 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
>> > >
>> > > > Dear Blue Sky Support Team
>> > > >
>> > > > As i checked as you mentioned instruction wise, everything is
>> working
>> > > fine,
>> > > > i can able to access the web cam through ekiga, web cam support V4L
>> > also,
>> > > > but when am starting teacher client again am getting same error
>> only,
>> > can
>> > > > you please check this issue very urgent basis.
>> > > >
>> > > > Thanks
>> > > > Suresh
>> > > >
>> > > > On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <
>> lovesummerf@gmail.com>
>> > > > wrote:
>> > > >
>> > > > > Hi, Suresh:
>> > > > > [1]: are you using skype on windows to test the availablity of
>> > > > webcam?
>> > > > > [2]: have you tried Ekiga to see if the web cam support V4L
>> and
>> > > run?
>> > > > > [3]:if [2] has been proved ok, you can start up Student
>> client,
>> > > just
>> > > > > click "my view", you would see the image;
>> > > > > regards,
>> > > > > Kevin
>> > > > >
>> > > > > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
>> > > > >
>> > > > > > Dear Blue sky Support Team
>> > > > > >
>> > > > > > Am Suresh as i try to install Real Class system in my machine,
>> That
>> > > > time
>> > > > > am
>> > > > > > facing some problem for web cam connection.
>> > > > > >
>> > > > > > As am using logitech web cam in my system, i tested this web cam
>> > in
>> > > > > skype
>> > > > > > an gmail video chat its working fine.
>> > > > > >
>> > > > > > I started Successfully TServer, DTU everything is working fine.
>> > after
>> > > i
>> > > > > > started teacher client system that also started successfully.
>> > > > > >
>> > > > > > When we are trying to create class through teacher client
>> system
>> > > again
>> > > > > am
>> > > > > > getting error, *Error 022: No video Equipment Found
>> > > > > > Information 022: Please check Whether Video Equipment Ready *,
>> > please
>> > > > > > assist
>> > > > > > me why this error showing.
>> > > > > >
>> > > > > >
>> > > > > > This is the log file when am trying to start Teacher client
>> system
>> > am
>> > > > > > getting this error also.
>> > > > > >
>> > > > > > message lenth is 144
>> > > > > > teachloginr.ResponseType 0
>> > > > > > teachloginr.TeacherID 4
>> > > > > > get group name is class
>> > > > > > message lenth is 36
>> > > > > > create class OK!
>> > > > > > MCU ip is 192.168.0.100
>> > > > > > MCU port is 10002,10000
>> > > > > > /root/kejian/2009_08_31_18_40
>> > > > > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
>> > > > > > query was successful
>> > > > > > this device can capture video to memory
>> > > > > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion
>> > `((int)
>> > > > > > ((xcb_
>> > > > > > req) - (dpy->request)) >= 0)' failed.
>> > > > > > Aborted
>> > > > > >
>> > > > > >
>> > > > > > --
>> > > > > > Suresh | Senior Programmer,
>> > > > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd
>> |
>> > > New
>> > > > > > Delhi| 110076.
>> > > > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
>> > > > > > Website: www.newconceptict.com
>> > > > > >
>> > > > >
>> > > > >
>> > > > >
>> > > > > --
>> > > > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
>> > > > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network
>> Tech
>> > > > > http://incubator.apache.org/bluesky/
>> > > > >
>> > > >
>> > > >
>> > > >
>> > > > --
>> > > > Suresh | Senior Programmer,
>> > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd |
>> New
>> > > > Delhi| 110076.
>> > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
>> > > > Website: www.newconceptict.com
>> > > >
>> > >
>> > >
>> > >
>> > > --
>> > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
>> > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
>> > > http://incubator.apache.org/bluesky/
>> > >
>> >
>> >
>> >
>> > --
>> > Suresh | Senior Programmer,
>> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
>> > Delhi| 110076.
>> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
>> > Website: www.newconceptict.com
>> >
>>
>>
>>
>> --
>> Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
>> Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
>> http://incubator.apache.org/bluesky/
>>
>
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
--
Suresh | Senior Programmer,
The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
Delhi| 110076.
Phone: 011 29943221 (Direct) | Mobile: 9958824524
Website: www.newconceptict.com
Re: Blue sky Real Class System Problem
Posted by Suresh Rajagopal <su...@newconceptict.com>.
Thanks i will check this link.
On Fri, Sep 4, 2009 at 8:04 AM, Samuel Kevin <lo...@gmail.com> wrote:
> hi, Suresh:
> check this out. i guess this may help. http://qce-ga.sourceforge.net/.
>
> regards,
> Kevin
>
> 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
>
> > Dear Support Team
> >
> > Please see this following error, when am creating class through Teacher
> > client system am getting this error, please assist me.
> >
> > Error:screen's resolution is big!
> > message lenth is 144
> > teachloginr.ResponseType 0
> > teachloginr.TeacherID 2
> > get group name is class
> > message lenth is 36
> > create class OK!
> > MCU ip is 192.168.0.100
> > MCU port is 10004,10002
> > /root/kejian/2009_09_03_15_18
> > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > query was successful
> > this device can capture video to memory
> > (ncteacher:7069): GLib-GObject-CRITICAL **: g_object_ref: assertion
> > `object->ref_count > 0' failed
> > (ncteacher:7069): Gtk-CRITICAL **: _gtk_style_peek_property_value:
> > assertion
> > `GTK_IS_STYLE (style)' failed
> > Segmentation fault
> >
> >
> >
> >
> > Thanks
> > Suresh
> >
> > On Thu, Sep 3, 2009 at 2:20 PM, Samuel Kevin <lo...@gmail.com>
> > wrote:
> >
> > > just a minute Suresh, we are digging into the error. Usually, we only
> see
> > > this error when we don't plug in the web cam.......
> > >
> > > 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> > >
> > > > Dear Blue Sky Support Team
> > > >
> > > > As i checked as you mentioned instruction wise, everything is working
> > > fine,
> > > > i can able to access the web cam through ekiga, web cam support V4L
> > also,
> > > > but when am starting teacher client again am getting same error only,
> > can
> > > > you please check this issue very urgent basis.
> > > >
> > > > Thanks
> > > > Suresh
> > > >
> > > > On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <lovesummerf@gmail.com
> >
> > > > wrote:
> > > >
> > > > > Hi, Suresh:
> > > > > [1]: are you using skype on windows to test the availablity of
> > > > webcam?
> > > > > [2]: have you tried Ekiga to see if the web cam support V4L and
> > > run?
> > > > > [3]:if [2] has been proved ok, you can start up Student client,
> > > just
> > > > > click "my view", you would see the image;
> > > > > regards,
> > > > > Kevin
> > > > >
> > > > > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> > > > >
> > > > > > Dear Blue sky Support Team
> > > > > >
> > > > > > Am Suresh as i try to install Real Class system in my machine,
> That
> > > > time
> > > > > am
> > > > > > facing some problem for web cam connection.
> > > > > >
> > > > > > As am using logitech web cam in my system, i tested this web cam
> > in
> > > > > skype
> > > > > > an gmail video chat its working fine.
> > > > > >
> > > > > > I started Successfully TServer, DTU everything is working fine.
> > after
> > > i
> > > > > > started teacher client system that also started successfully.
> > > > > >
> > > > > > When we are trying to create class through teacher client system
> > > again
> > > > > am
> > > > > > getting error, *Error 022: No video Equipment Found
> > > > > > Information 022: Please check Whether Video Equipment Ready *,
> > please
> > > > > > assist
> > > > > > me why this error showing.
> > > > > >
> > > > > >
> > > > > > This is the log file when am trying to start Teacher client
> system
> > am
> > > > > > getting this error also.
> > > > > >
> > > > > > message lenth is 144
> > > > > > teachloginr.ResponseType 0
> > > > > > teachloginr.TeacherID 4
> > > > > > get group name is class
> > > > > > message lenth is 36
> > > > > > create class OK!
> > > > > > MCU ip is 192.168.0.100
> > > > > > MCU port is 10002,10000
> > > > > > /root/kejian/2009_08_31_18_40
> > > > > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > > > > > query was successful
> > > > > > this device can capture video to memory
> > > > > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion
> > `((int)
> > > > > > ((xcb_
> > > > > > req) - (dpy->request)) >= 0)' failed.
> > > > > > Aborted
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Suresh | Senior Programmer,
> > > > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd
> |
> > > New
> > > > > > Delhi| 110076.
> > > > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > > > > Website: www.newconceptict.com
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > > > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > > > > http://incubator.apache.org/bluesky/
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Suresh | Senior Programmer,
> > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd |
> New
> > > > Delhi| 110076.
> > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > > Website: www.newconceptict.com
> > > >
> > >
> > >
> > >
> > > --
> > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > > http://incubator.apache.org/bluesky/
> > >
> >
> >
> >
> > --
> > Suresh | Senior Programmer,
> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > Delhi| 110076.
> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > Website: www.newconceptict.com
> >
>
>
>
> --
> Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> http://incubator.apache.org/bluesky/
>
--
Suresh | Senior Programmer,
The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
Delhi| 110076.
Phone: 011 29943221 (Direct) | Mobile: 9958824524
Website: www.newconceptict.com
Re: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
hi, Suresh:
check this out. i guess this may help. http://qce-ga.sourceforge.net/ .
regards,
Kevin
2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> Dear Support Team
>
> Please see this following error, when am creating class through Teacher
> client system am getting this error, please assist me.
>
> Error:screen's resolution is big!
> message lenth is 144
> teachloginr.ResponseType 0
> teachloginr.TeacherID 2
> get group name is class
> message lenth is 36
> create class OK!
> MCU ip is 192.168.0.100
> MCU port is 10004,10002
> /root/kejian/2009_09_03_15_18
> CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> query was successful
> this device can capture video to memory
> (ncteacher:7069): GLib-GObject-CRITICAL **: g_object_ref: assertion
> `object->ref_count > 0' failed
> (ncteacher:7069): Gtk-CRITICAL **: _gtk_style_peek_property_value:
> assertion
> `GTK_IS_STYLE (style)' failed
> Segmentation fault
>
>
>
>
> Thanks
> Suresh
>
> On Thu, Sep 3, 2009 at 2:20 PM, Samuel Kevin <lo...@gmail.com>
> wrote:
>
> > just a minute Suresh, we are digging into the error. Usually, we only see
> > this error when we don't plug in the web cam.......
> >
> > 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> >
> > > Dear Blue Sky Support Team
> > >
> > > As i checked as you mentioned instruction wise, everything is working
> > fine,
> > > i can able to access the web cam through ekiga, web cam support V4L
> also,
> > > but when am starting teacher client again am getting same error only,
> can
> > > you please check this issue very urgent basis.
> > >
> > > Thanks
> > > Suresh
> > >
> > > On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <lo...@gmail.com>
> > > wrote:
> > >
> > > > Hi, Suresh:
> > > > [1]: are you using skype on windows to test the availablity of
> > > webcam?
> > > > [2]: have you tried Ekiga to see if the web cam support V4L and
> > run?
> > > > [3]:if [2] has been proved ok, you can start up Student client,
> > just
> > > > click "my view", you would see the image;
> > > > regards,
> > > > Kevin
> > > >
> > > > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> > > >
> > > > > Dear Blue sky Support Team
> > > > >
> > > > > Am Suresh as i try to install Real Class system in my machine, That
> > > time
> > > > am
> > > > > facing some problem for web cam connection.
> > > > >
> > > > > As am using logitech web cam in my system, i tested this web cam
> in
> > > > skype
> > > > > an gmail video chat its working fine.
> > > > >
> > > > > I started Successfully TServer, DTU everything is working fine.
> after
> > i
> > > > > started teacher client system that also started successfully.
> > > > >
> > > > > When we are trying to create class through teacher client system
> > again
> > > > am
> > > > > getting error, *Error 022: No video Equipment Found
> > > > > Information 022: Please check Whether Video Equipment Ready *,
> please
> > > > > assist
> > > > > me why this error showing.
> > > > >
> > > > >
> > > > > This is the log file when am trying to start Teacher client system
> am
> > > > > getting this error also.
> > > > >
> > > > > message lenth is 144
> > > > > teachloginr.ResponseType 0
> > > > > teachloginr.TeacherID 4
> > > > > get group name is class
> > > > > message lenth is 36
> > > > > create class OK!
> > > > > MCU ip is 192.168.0.100
> > > > > MCU port is 10002,10000
> > > > > /root/kejian/2009_08_31_18_40
> > > > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > > > > query was successful
> > > > > this device can capture video to memory
> > > > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion
> `((int)
> > > > > ((xcb_
> > > > > req) - (dpy->request)) >= 0)' failed.
> > > > > Aborted
> > > > >
> > > > >
> > > > > --
> > > > > Suresh | Senior Programmer,
> > > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd |
> > New
> > > > > Delhi| 110076.
> > > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > > > Website: www.newconceptict.com
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > > > http://incubator.apache.org/bluesky/
> > > >
> > >
> > >
> > >
> > > --
> > > Suresh | Senior Programmer,
> > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > > Delhi| 110076.
> > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > Website: www.newconceptict.com
> > >
> >
> >
> >
> > --
> > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > http://incubator.apache.org/bluesky/
> >
>
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/
Re: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
1. does the web cam work right now ?
2. the error of resolution does not matter. it is recommended to set the
resolution of teacher client to 800*600, but it doesnot matter even it is
1024*768;
3. are you now LOGIN as root?
2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> Dear Support Team
>
> Please see this following error, when am creating class through Teacher
> client system am getting this error, please assist me.
>
> Error:screen's resolution is big!
> message lenth is 144
> teachloginr.ResponseType 0
> teachloginr.TeacherID 2
> get group name is class
> message lenth is 36
> create class OK!
> MCU ip is 192.168.0.100
> MCU port is 10004,10002
> /root/kejian/2009_09_03_15_18
> CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> query was successful
> this device can capture video to memory
> (ncteacher:7069): GLib-GObject-CRITICAL **: g_object_ref: assertion
> `object->ref_count > 0' failed
> (ncteacher:7069): Gtk-CRITICAL **: _gtk_style_peek_property_value:
> assertion
> `GTK_IS_STYLE (style)' failed
> Segmentation fault
>
>
>
>
> Thanks
> Suresh
>
> On Thu, Sep 3, 2009 at 2:20 PM, Samuel Kevin <lo...@gmail.com>
> wrote:
>
> > just a minute Suresh, we are digging into the error. Usually, we only see
> > this error when we don't plug in the web cam.......
> >
> > 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> >
> > > Dear Blue Sky Support Team
> > >
> > > As i checked as you mentioned instruction wise, everything is working
> > fine,
> > > i can able to access the web cam through ekiga, web cam support V4L
> also,
> > > but when am starting teacher client again am getting same error only,
> can
> > > you please check this issue very urgent basis.
> > >
> > > Thanks
> > > Suresh
> > >
> > > On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <lo...@gmail.com>
> > > wrote:
> > >
> > > > Hi, Suresh:
> > > > [1]: are you using skype on windows to test the availablity of
> > > webcam?
> > > > [2]: have you tried Ekiga to see if the web cam support V4L and
> > run?
> > > > [3]:if [2] has been proved ok, you can start up Student client,
> > just
> > > > click "my view", you would see the image;
> > > > regards,
> > > > Kevin
> > > >
> > > > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> > > >
> > > > > Dear Blue sky Support Team
> > > > >
> > > > > Am Suresh as i try to install Real Class system in my machine, That
> > > time
> > > > am
> > > > > facing some problem for web cam connection.
> > > > >
> > > > > As am using logitech web cam in my system, i tested this web cam
> in
> > > > skype
> > > > > an gmail video chat its working fine.
> > > > >
> > > > > I started Successfully TServer, DTU everything is working fine.
> after
> > i
> > > > > started teacher client system that also started successfully.
> > > > >
> > > > > When we are trying to create class through teacher client system
> > again
> > > > am
> > > > > getting error, *Error 022: No video Equipment Found
> > > > > Information 022: Please check Whether Video Equipment Ready *,
> please
> > > > > assist
> > > > > me why this error showing.
> > > > >
> > > > >
> > > > > This is the log file when am trying to start Teacher client system
> am
> > > > > getting this error also.
> > > > >
> > > > > message lenth is 144
> > > > > teachloginr.ResponseType 0
> > > > > teachloginr.TeacherID 4
> > > > > get group name is class
> > > > > message lenth is 36
> > > > > create class OK!
> > > > > MCU ip is 192.168.0.100
> > > > > MCU port is 10002,10000
> > > > > /root/kejian/2009_08_31_18_40
> > > > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > > > > query was successful
> > > > > this device can capture video to memory
> > > > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion
> `((int)
> > > > > ((xcb_
> > > > > req) - (dpy->request)) >= 0)' failed.
> > > > > Aborted
> > > > >
> > > > >
> > > > > --
> > > > > Suresh | Senior Programmer,
> > > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd |
> > New
> > > > > Delhi| 110076.
> > > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > > > Website: www.newconceptict.com
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > > > http://incubator.apache.org/bluesky/
> > > >
> > >
> > >
> > >
> > > --
> > > Suresh | Senior Programmer,
> > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > > Delhi| 110076.
> > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > Website: www.newconceptict.com
> > >
> >
> >
> >
> > --
> > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > http://incubator.apache.org/bluesky/
> >
>
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/
Re: Blue sky Real Class System Problem
Posted by Suresh Rajagopal <su...@newconceptict.com>.
Dear Support Team
Please see this following error, when am creating class through Teacher
client system am getting this error, please assist me.
Error:screen's resolution is big!
message lenth is 144
teachloginr.ResponseType 0
teachloginr.TeacherID 2
get group name is class
message lenth is 36
create class OK!
MCU ip is 192.168.0.100
MCU port is 10004,10002
/root/kejian/2009_09_03_15_18
CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
query was successful
this device can capture video to memory
(ncteacher:7069): GLib-GObject-CRITICAL **: g_object_ref: assertion
`object->ref_count > 0' failed
(ncteacher:7069): Gtk-CRITICAL **: _gtk_style_peek_property_value: assertion
`GTK_IS_STYLE (style)' failed
Segmentation fault
Thanks
Suresh
On Thu, Sep 3, 2009 at 2:20 PM, Samuel Kevin <lo...@gmail.com> wrote:
> just a minute Suresh, we are digging into the error. Usually, we only see
> this error when we don't plug in the web cam.......
>
> 2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
>
> > Dear Blue Sky Support Team
> >
> > As i checked as you mentioned instruction wise, everything is working
> fine,
> > i can able to access the web cam through ekiga, web cam support V4L also,
> > but when am starting teacher client again am getting same error only, can
> > you please check this issue very urgent basis.
> >
> > Thanks
> > Suresh
> >
> > On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <lo...@gmail.com>
> > wrote:
> >
> > > Hi, Suresh:
> > > [1]: are you using skype on windows to test the availablity of
> > webcam?
> > > [2]: have you tried Ekiga to see if the web cam support V4L and
> run?
> > > [3]:if [2] has been proved ok, you can start up Student client,
> just
> > > click "my view", you would see the image;
> > > regards,
> > > Kevin
> > >
> > > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> > >
> > > > Dear Blue sky Support Team
> > > >
> > > > Am Suresh as i try to install Real Class system in my machine, That
> > time
> > > am
> > > > facing some problem for web cam connection.
> > > >
> > > > As am using logitech web cam in my system, i tested this web cam in
> > > skype
> > > > an gmail video chat its working fine.
> > > >
> > > > I started Successfully TServer, DTU everything is working fine. after
> i
> > > > started teacher client system that also started successfully.
> > > >
> > > > When we are trying to create class through teacher client system
> again
> > > am
> > > > getting error, *Error 022: No video Equipment Found
> > > > Information 022: Please check Whether Video Equipment Ready *, please
> > > > assist
> > > > me why this error showing.
> > > >
> > > >
> > > > This is the log file when am trying to start Teacher client system am
> > > > getting this error also.
> > > >
> > > > message lenth is 144
> > > > teachloginr.ResponseType 0
> > > > teachloginr.TeacherID 4
> > > > get group name is class
> > > > message lenth is 36
> > > > create class OK!
> > > > MCU ip is 192.168.0.100
> > > > MCU port is 10002,10000
> > > > /root/kejian/2009_08_31_18_40
> > > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > > > query was successful
> > > > this device can capture video to memory
> > > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> > > > ((xcb_
> > > > req) - (dpy->request)) >= 0)' failed.
> > > > Aborted
> > > >
> > > >
> > > > --
> > > > Suresh | Senior Programmer,
> > > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd |
> New
> > > > Delhi| 110076.
> > > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > > Website: www.newconceptict.com
> > > >
> > >
> > >
> > >
> > > --
> > > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > > http://incubator.apache.org/bluesky/
> > >
> >
> >
> >
> > --
> > Suresh | Senior Programmer,
> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > Delhi| 110076.
> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > Website: www.newconceptict.com
> >
>
>
>
> --
> Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> http://incubator.apache.org/bluesky/
>
--
Suresh | Senior Programmer,
The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
Delhi| 110076.
Phone: 011 29943221 (Direct) | Mobile: 9958824524
Website: www.newconceptict.com
Re: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
just a minute Suresh, we are digging into the error. Usually, we only see
this error when we don't plug in the web cam.......
2009/9/3 Suresh Rajagopal <su...@newconceptict.com>
> Dear Blue Sky Support Team
>
> As i checked as you mentioned instruction wise, everything is working fine,
> i can able to access the web cam through ekiga, web cam support V4L also,
> but when am starting teacher client again am getting same error only, can
> you please check this issue very urgent basis.
>
> Thanks
> Suresh
>
> On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <lo...@gmail.com>
> wrote:
>
> > Hi, Suresh:
> > [1]: are you using skype on windows to test the availablity of
> webcam?
> > [2]: have you tried Ekiga to see if the web cam support V4L and run?
> > [3]:if [2] has been proved ok, you can start up Student client, just
> > click "my view", you would see the image;
> > regards,
> > Kevin
> >
> > 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> >
> > > Dear Blue sky Support Team
> > >
> > > Am Suresh as i try to install Real Class system in my machine, That
> time
> > am
> > > facing some problem for web cam connection.
> > >
> > > As am using logitech web cam in my system, i tested this web cam in
> > skype
> > > an gmail video chat its working fine.
> > >
> > > I started Successfully TServer, DTU everything is working fine. after i
> > > started teacher client system that also started successfully.
> > >
> > > When we are trying to create class through teacher client system again
> > am
> > > getting error, *Error 022: No video Equipment Found
> > > Information 022: Please check Whether Video Equipment Ready *, please
> > > assist
> > > me why this error showing.
> > >
> > >
> > > This is the log file when am trying to start Teacher client system am
> > > getting this error also.
> > >
> > > message lenth is 144
> > > teachloginr.ResponseType 0
> > > teachloginr.TeacherID 4
> > > get group name is class
> > > message lenth is 36
> > > create class OK!
> > > MCU ip is 192.168.0.100
> > > MCU port is 10002,10000
> > > /root/kejian/2009_08_31_18_40
> > > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > > query was successful
> > > this device can capture video to memory
> > > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> > > ((xcb_
> > > req) - (dpy->request)) >= 0)' failed.
> > > Aborted
> > >
> > >
> > > --
> > > Suresh | Senior Programmer,
> > > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > > Delhi| 110076.
> > > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > > Website: www.newconceptict.com
> > >
> >
> >
> >
> > --
> > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > http://incubator.apache.org/bluesky/
> >
>
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/
Re: Blue sky Real Class System Problem
Posted by Suresh Rajagopal <su...@newconceptict.com>.
Dear Blue Sky Support Team
As i checked as you mentioned instruction wise, everything is working fine,
i can able to access the web cam through ekiga, web cam support V4L also,
but when am starting teacher client again am getting same error only, can
you please check this issue very urgent basis.
Thanks
Suresh
On Wed, Sep 2, 2009 at 12:38 PM, Samuel Kevin <lo...@gmail.com> wrote:
> Hi, Suresh:
> [1]: are you using skype on windows to test the availablity of webcam?
> [2]: have you tried Ekiga to see if the web cam support V4L and run?
> [3]:if [2] has been proved ok, you can start up Student client, just
> click "my view", you would see the image;
> regards,
> Kevin
>
> 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
>
> > Dear Blue sky Support Team
> >
> > Am Suresh as i try to install Real Class system in my machine, That time
> am
> > facing some problem for web cam connection.
> >
> > As am using logitech web cam in my system, i tested this web cam in
> skype
> > an gmail video chat its working fine.
> >
> > I started Successfully TServer, DTU everything is working fine. after i
> > started teacher client system that also started successfully.
> >
> > When we are trying to create class through teacher client system again
> am
> > getting error, *Error 022: No video Equipment Found
> > Information 022: Please check Whether Video Equipment Ready *, please
> > assist
> > me why this error showing.
> >
> >
> > This is the log file when am trying to start Teacher client system am
> > getting this error also.
> >
> > message lenth is 144
> > teachloginr.ResponseType 0
> > teachloginr.TeacherID 4
> > get group name is class
> > message lenth is 36
> > create class OK!
> > MCU ip is 192.168.0.100
> > MCU port is 10002,10000
> > /root/kejian/2009_08_31_18_40
> > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > query was successful
> > this device can capture video to memory
> > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> > ((xcb_
> > req) - (dpy->request)) >= 0)' failed.
> > Aborted
> >
> >
> > --
> > Suresh | Senior Programmer,
> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > Delhi| 110076.
> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > Website: www.newconceptict.com
> >
>
>
>
> --
> Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> http://incubator.apache.org/bluesky/
>
--
Suresh | Senior Programmer,
The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
Delhi| 110076.
Phone: 011 29943221 (Direct) | Mobile: 9958824524
Website: www.newconceptict.com
Re: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
Hi, Suresh:
[1]: are you using skype on windows to test the availablity of webcam?
[2]: have you tried Ekiga to see if the web cam support V4L and run?
[3]:if [2] has been proved ok, you can start up Student client, just
click "my view", you would see the image;
regards,
Kevin
2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> Dear Blue sky Support Team
>
> Am Suresh as i try to install Real Class system in my machine, That time am
> facing some problem for web cam connection.
>
> As am using logitech web cam in my system, i tested this web cam in skype
> an gmail video chat its working fine.
>
> I started Successfully TServer, DTU everything is working fine. after i
> started teacher client system that also started successfully.
>
> When we are trying to create class through teacher client system again am
> getting error, *Error 022: No video Equipment Found
> Information 022: Please check Whether Video Equipment Ready *, please
> assist
> me why this error showing.
>
>
> This is the log file when am trying to start Teacher client system am
> getting this error also.
>
> message lenth is 144
> teachloginr.ResponseType 0
> teachloginr.TeacherID 4
> get group name is class
> message lenth is 36
> create class OK!
> MCU ip is 192.168.0.100
> MCU port is 10002,10000
> /root/kejian/2009_08_31_18_40
> CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> query was successful
> this device can capture video to memory
> ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> ((xcb_
> req) - (dpy->request)) >= 0)' failed.
> Aborted
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/
Re: Blue sky Real Class System Problem
Posted by Suresh Rajagopal <su...@newconceptict.com>.
Thanks for your reply. I will do check and get back to you.
On Wed, Sep 2, 2009 at 12:17 PM, Arthur Chen <zi...@gmail.com> wrote:
> Hi Suresh,
>
> Please check that your web cam is not occupied by other programs,like
> skype.
> Close all the Realclass system programs,
> just run the teacher client, and choose the work mode on the menu to local
> mode, then start local recording. If it works ok,
> then go to the /root directory, you can see there the folders to store the
> recorded audio, video,and screen data file.
> Remember to use root account to run teacher client.
>
> If all these go well, it indicates your web cam work well in Realclass
> system.
>
> Best regards,
> Arthur
>
>
>
>
>
> 2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
>
> > Dear Blue sky Support Team
> >
> > Am Suresh as i try to install Real Class system in my machine, That time
> am
> > facing some problem for web cam connection.
> >
> > As am using logitech web cam in my system, i tested this web cam in
> skype
> > an gmail video chat its working fine.
> >
> > I started Successfully TServer, DTU everything is working fine. after i
> > started teacher client system that also started successfully.
> >
> > When we are trying to create class through teacher client system again
> am
> > getting error, *Error 022: No video Equipment Found
> > Information 022: Please check Whether Video Equipment Ready *, please
> > assist
> > me why this error showing.
> >
> >
> > This is the log file when am trying to start Teacher client system am
> > getting this error also.
> >
> > message lenth is 144
> > teachloginr.ResponseType 0
> > teachloginr.TeacherID 4
> > get group name is class
> > message lenth is 36
> > create class OK!
> > MCU ip is 192.168.0.100
> > MCU port is 10002,10000
> > /root/kejian/2009_08_31_18_40
> > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > query was successful
> > this device can capture video to memory
> > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> > ((xcb_
> > req) - (dpy->request)) >= 0)' failed.
> > Aborted
> >
> >
> > --
> > Suresh | Senior Programmer,
> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > Delhi| 110076.
> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > Website: www.newconceptict.com
> >
>
--
Suresh | Senior Programmer,
The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
Delhi| 110076.
Phone: 011 29943221 (Direct) | Mobile: 9958824524
Website: www.newconceptict.com
Re: Blue sky Real Class System Problem
Posted by Arthur Chen <zi...@gmail.com>.
Hi Suresh,
Please check that your web cam is not occupied by other programs,like skype.
Close all the Realclass system programs,
just run the teacher client, and choose the work mode on the menu to local
mode, then start local recording. If it works ok,
then go to the /root directory, you can see there the folders to store the
recorded audio, video,and screen data file.
Remember to use root account to run teacher client.
If all these go well, it indicates your web cam work well in Realclass
system.
Best regards,
Arthur
2009/9/2 Suresh Rajagopal <su...@newconceptict.com>
> Dear Blue sky Support Team
>
> Am Suresh as i try to install Real Class system in my machine, That time am
> facing some problem for web cam connection.
>
> As am using logitech web cam in my system, i tested this web cam in skype
> an gmail video chat its working fine.
>
> I started Successfully TServer, DTU everything is working fine. after i
> started teacher client system that also started successfully.
>
> When we are trying to create class through teacher client system again am
> getting error, *Error 022: No video Equipment Found
> Information 022: Please check Whether Video Equipment Ready *, please
> assist
> me why this error showing.
>
>
> This is the log file when am trying to start Teacher client system am
> getting this error also.
>
> message lenth is 144
> teachloginr.ResponseType 0
> teachloginr.TeacherID 4
> get group name is class
> message lenth is 36
> create class OK!
> MCU ip is 192.168.0.100
> MCU port is 10002,10000
> /root/kejian/2009_08_31_18_40
> CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> query was successful
> this device can capture video to memory
> ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> ((xcb_
> req) - (dpy->request)) >= 0)' failed.
> Aborted
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
Re: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
yep, i remote access to Suresh's computer and i found that the web cam he
use can only run under V4L2 while our Teacher Client and Student Client can
only support web cam driven by V4L. So, this is an issue. That does hinder
the user to try RealClass system successfully.
2009/9/4 Jin Cao <ca...@gmail.com>
> Hi KevinI don't know why I can't see your content above...
> I think Suresh's cam problem is caused by the cam driver.
> As I know, Realclass need V4L driver to support video cam, not V4L 2...
> Some cam support V4L and others need V4L 2.
> Regards
>
> 2009/9/4 Samuel Kevin <lo...@gmail.com>
>
> > ---------- Forwarded message ----------
> > From: Suresh Rajagopal <su...@newconceptict.com>
> > Date: 2009/9/2
> > Subject: Blue sky Real Class System Problem
> > To: bluesky-user@incubator.apache.org
> >
> >
> > Dear Blue sky Support Team
> >
> > Am Suresh as i try to install Real Class system in my machine, That time
> am
> > facing some problem for web cam connection.
> >
> > As am using logitech web cam in my system, i tested this web cam in
> skype
> > an gmail video chat its working fine.
> >
> > I started Successfully TServer, DTU everything is working fine. after i
> > started teacher client system that also started successfully.
> >
> > When we are trying to create class through teacher client system again
> am
> > getting error, *Error 022: No video Equipment Found
> > Information 022: Please check Whether Video Equipment Ready *, please
> > assist
> > me why this error showing.
> >
> >
> > This is the log file when am trying to start Teacher client system am
> > getting this error also.
> >
> > message lenth is 144
> > teachloginr.ResponseType 0
> > teachloginr.TeacherID 4
> > get group name is class
> > message lenth is 36
> > create class OK!
> > MCU ip is 192.168.0.100
> > MCU port is 10002,10000
> > /root/kejian/2009_08_31_18_40
> > CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> > query was successful
> > this device can capture video to memory
> > ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> > ((xcb_
> > req) - (dpy->request)) >= 0)' failed.
> > Aborted
> >
> >
> > --
> > Suresh | Senior Programmer,
> > The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> > Delhi| 110076.
> > Phone: 011 29943221 (Direct) | Mobile: 9958824524
> > Website: www.newconceptict.com
> >
> >
> >
> > --
> > Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> > Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> > http://incubator.apache.org/bluesky/
> >
>
>
>
> --
> Jin,Cao a.k.a caojin85cn@gmailcom
>
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/
Re: Blue sky Real Class System Problem
Posted by Jin Cao <ca...@gmail.com>.
Hi KevinI don't know why I can't see your content above...
I think Suresh's cam problem is caused by the cam driver.
As I know, Realclass need V4L driver to support video cam, not V4L 2...
Some cam support V4L and others need V4L 2.
Regards
2009/9/4 Samuel Kevin <lo...@gmail.com>
> ---------- Forwarded message ----------
> From: Suresh Rajagopal <su...@newconceptict.com>
> Date: 2009/9/2
> Subject: Blue sky Real Class System Problem
> To: bluesky-user@incubator.apache.org
>
>
> Dear Blue sky Support Team
>
> Am Suresh as i try to install Real Class system in my machine, That time am
> facing some problem for web cam connection.
>
> As am using logitech web cam in my system, i tested this web cam in skype
> an gmail video chat its working fine.
>
> I started Successfully TServer, DTU everything is working fine. after i
> started teacher client system that also started successfully.
>
> When we are trying to create class through teacher client system again am
> getting error, *Error 022: No video Equipment Found
> Information 022: Please check Whether Video Equipment Ready *, please
> assist
> me why this error showing.
>
>
> This is the log file when am trying to start Teacher client system am
> getting this error also.
>
> message lenth is 144
> teachloginr.ResponseType 0
> teachloginr.TeacherID 4
> get group name is class
> message lenth is 36
> create class OK!
> MCU ip is 192.168.0.100
> MCU port is 10002,10000
> /root/kejian/2009_08_31_18_40
> CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
> query was successful
> this device can capture video to memory
> ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int)
> ((xcb_
> req) - (dpy->request)) >= 0)' failed.
> Aborted
>
>
> --
> Suresh | Senior Programmer,
> The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
> Delhi| 110076.
> Phone: 011 29943221 (Direct) | Mobile: 9958824524
> Website: www.newconceptict.com
>
>
>
> --
> Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
> Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
> http://incubator.apache.org/bluesky/
>
--
Jin,Cao a.k.a caojin85cn@gmailcom
Fwd: Blue sky Real Class System Problem
Posted by Samuel Kevin <lo...@gmail.com>.
---------- Forwarded message ----------
From: Suresh Rajagopal <su...@newconceptict.com>
Date: 2009/9/2
Subject: Blue sky Real Class System Problem
To: bluesky-user@incubator.apache.org
Dear Blue sky Support Team
Am Suresh as i try to install Real Class system in my machine, That time am
facing some problem for web cam connection.
As am using logitech web cam in my system, i tested this web cam in skype
an gmail video chat its working fine.
I started Successfully TServer, DTU everything is working fine. after i
started teacher client system that also started successfully.
When we are trying to create class through teacher client system again am
getting error, *Error 022: No video Equipment Found
Information 022: Please check Whether Video Equipment Ready *, please assist
me why this error showing.
This is the log file when am trying to start Teacher client system am
getting this error also.
message lenth is 144
teachloginr.ResponseType 0
teachloginr.TeacherID 4
get group name is class
message lenth is 36
create class OK!
MCU ip is 192.168.0.100
MCU port is 10002,10000
/root/kejian/2009_08_31_18_40
CV4LVideoSender::OpenVideo(): dev_name = /dev/video0
query was successful
this device can capture video to memory
ncteacher: ../../src/xcb_lock.c:77: _XGetXCBBuffer: Assertion `((int) ((xcb_
req) - (dpy->request)) >= 0)' failed.
Aborted
--
Suresh | Senior Programmer,
The ICT and Web Group | New Concept Information Systems Pvt. Ltd | New
Delhi| 110076.
Phone: 011 29943221 (Direct) | Mobile: 9958824524
Website: www.newconceptict.com
--
Bowen Ma a.k.a Samuel Kevin @ Bluesky Dev Team XJTU
Shaanxi Province Key Lab. of Satellite and Terrestrial Network Tech
http://incubator.apache.org/bluesky/