* Screenshot tool
@ 2019-04-16 7:15 Evan O'Loughlin
2019-04-16 9:19 ` Herman van Hazendonk
0 siblings, 1 reply; 4+ messages in thread
From: Evan O'Loughlin @ 2019-04-16 7:15 UTC (permalink / raw)
To: yocto
Hi,
I’m currently using yocto to build a custom OS based on Linux 4.9 for our hardware:
Build Configuration:
BB_VERSION = "1.32.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-16.04"
TARGET_SYS = "arm-linux-gnueabi"
MACHINE = "CUSTOM_MACHINE_NAME"
DISTRO = "arago"
DISTRO_VERSION = "2017.12"
TUNE_FEATURES = "arm armv7a vfp thumb neon callconvention-hard"
TARGET_FPU = "hard"
meta-processor-sdk = "HEAD:92db4d8023d88ab59fab2953e7447ec0bd5a6db1"
meta-ros = "HEAD:e2566402ab108a19634354a934788109422cf409"
meta-arago-distro
meta-arago-extras = "HEAD:5b2a44b0c4d989133bc13d59398fd10375d351bb"
meta-browser = "HEAD:26d50665e2f7223c5f4ad7481a8d2431e7cb55fb"
meta-openamp = "HEAD:8a214032bfb7e8124bc1485c70c69f7d60abb819"
meta-qt5 = "HEAD:2c9f0e4eb0e9097f6f872ec1e1d81768a8ab5f1b"
meta-networking
meta-ruby
meta-python
meta-oe
meta-gnome
meta-multimedia = "HEAD:b40116cf457b88a2db14b86fda9627fb34d56ae6"
meta-ti = "HEAD:3dc08477529b31ce887bb22a08201a843ded48f0"
meta-linaro-toolchain
meta-optee = "HEAD:d73e794c7e7ebb1cc5bf495a52a72b26fb118250"
meta = "HEAD:39fd8c129e2bff7f2f1649b7f6e036ccc50fd5d8"
meta-custom = "########################################"
meta-printing = "morty:72811bc3755d1a943fa2a2e79601781b44a77420"
We run a Qt5 application using EGLFS but can no longer capture screenshots.
In a previous yocto build based on Linux 3.x we were able to use a screenshot tool which effectively just read /dev/fb0 to a file.
I believe this was a change to how the underlying drivers interact with the GPU/Screen - I've started reading up on KMS/DRM.
Does anyone know is there a utility/tool which I could use to capture the Qt5 application as its drawn on screen?
Regards,
Evan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Screenshot tool
2019-04-16 7:15 Screenshot tool Evan O'Loughlin
@ 2019-04-16 9:19 ` Herman van Hazendonk
2019-04-17 16:08 ` Evan O'Loughlin
0 siblings, 1 reply; 4+ messages in thread
From: Herman van Hazendonk @ 2019-04-16 9:19 UTC (permalink / raw)
To: Evan O'Loughlin; +Cc: yocto
Hi Evan,
We don't currently have a 4.9 kernel running for our project since we're
working mainly with mobile devices which are stuck on 3.4 and 3.18
kernels for now, however we do have small screenshot utility which we
have as a plugin to our compositor which we have been using since early
Qt5 releases and we're currently on Qt 5.11/5.12.
Might be worth to give a go at your end:
https://github.com/webOS-ports/luna-next/blob/f5fc4c8af0d0c6f74f57d3963eb570966bc8fa55/plugins/compositor/screenshooter.cpp
And the header file at:
https://github.com/webOS-ports/luna-next/blob/f5fc4c8af0d0c6f74f57d3963eb570966bc8fa55/plugins/compositor/screenshooter.h
Hope this helps.
Best regards,
Herman
On 2019-04-16 09:15, Evan O'Loughlin wrote:
> Hi,
>
> I’m currently using yocto to build a custom OS based on Linux 4.9 for
> our hardware:
> Build Configuration:
> BB_VERSION = "1.32.0"
> BUILD_SYS = "x86_64-linux"
> NATIVELSBSTRING = "Ubuntu-16.04"
> TARGET_SYS = "arm-linux-gnueabi"
> MACHINE = "CUSTOM_MACHINE_NAME"
> DISTRO = "arago"
> DISTRO_VERSION = "2017.12"
> TUNE_FEATURES = "arm armv7a vfp thumb neon
> callconvention-hard"
> TARGET_FPU = "hard"
> meta-processor-sdk = "HEAD:92db4d8023d88ab59fab2953e7447ec0bd5a6db1"
> meta-ros = "HEAD:e2566402ab108a19634354a934788109422cf409"
> meta-arago-distro
> meta-arago-extras = "HEAD:5b2a44b0c4d989133bc13d59398fd10375d351bb"
> meta-browser = "HEAD:26d50665e2f7223c5f4ad7481a8d2431e7cb55fb"
> meta-openamp = "HEAD:8a214032bfb7e8124bc1485c70c69f7d60abb819"
> meta-qt5 = "HEAD:2c9f0e4eb0e9097f6f872ec1e1d81768a8ab5f1b"
> meta-networking
> meta-ruby
> meta-python
> meta-oe
> meta-gnome
> meta-multimedia = "HEAD:b40116cf457b88a2db14b86fda9627fb34d56ae6"
> meta-ti = "HEAD:3dc08477529b31ce887bb22a08201a843ded48f0"
> meta-linaro-toolchain
> meta-optee = "HEAD:d73e794c7e7ebb1cc5bf495a52a72b26fb118250"
> meta = "HEAD:39fd8c129e2bff7f2f1649b7f6e036ccc50fd5d8"
> meta-custom = "########################################"
> meta-printing = "morty:72811bc3755d1a943fa2a2e79601781b44a77420"
>
>
> We run a Qt5 application using EGLFS but can no longer capture
> screenshots.
> In a previous yocto build based on Linux 3.x we were able to use a
> screenshot tool which effectively just read /dev/fb0 to a file.
>
> I believe this was a change to how the underlying drivers interact
> with the GPU/Screen - I've started reading up on KMS/DRM.
>
>
> Does anyone know is there a utility/tool which I could use to capture
> the Qt5 application as its drawn on screen?
>
>
> Regards,
> Evan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Screenshot tool
2019-04-16 9:19 ` Herman van Hazendonk
@ 2019-04-17 16:08 ` Evan O'Loughlin
2019-04-24 16:15 ` ** Potentially Unsafe Email ** " Evan O'Loughlin
0 siblings, 1 reply; 4+ messages in thread
From: Evan O'Loughlin @ 2019-04-17 16:08 UTC (permalink / raw)
To: 'yoctoproject.org@herrie.org'; +Cc: yocto
Hi Herman,
Thanks for providing links to the screenshooter source.
Based on your code I've tried implementing a similar method within our application but I still get a blank (black) image.
It's possible that under the hood the 'grabWindow' method is just saving the framebuffer.
Regards,
Evan
-----Original Message-----
From: Herman van Hazendonk [mailto:me@herrie.org]
Sent: 16 April 2019 10:19
To: Evan O'Loughlin <evan.oloughlin@vitalograph.ie>
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Screenshot tool
Hi Evan,
We don't currently have a 4.9 kernel running for our project since we're working mainly with mobile devices which are stuck on 3.4 and 3.18 kernels for now, however we do have small screenshot utility which we have as a plugin to our compositor which we have been using since early
Qt5 releases and we're currently on Qt 5.11/5.12.
Might be worth to give a go at your end:
https://github.com/webOS-ports/luna-next/blob/f5fc4c8af0d0c6f74f57d3963eb570966bc8fa55/plugins/compositor/screenshooter.cpp
And the header file at:
https://github.com/webOS-ports/luna-next/blob/f5fc4c8af0d0c6f74f57d3963eb570966bc8fa55/plugins/compositor/screenshooter.h
Hope this helps.
Best regards,
Herman
On 2019-04-16 09:15, Evan O'Loughlin wrote:
> Hi,
>
> I’m currently using yocto to build a custom OS based on Linux 4.9 for
> our hardware:
> Build Configuration:
> BB_VERSION = "1.32.0"
> BUILD_SYS = "x86_64-linux"
> NATIVELSBSTRING = "Ubuntu-16.04"
> TARGET_SYS = "arm-linux-gnueabi"
> MACHINE = "CUSTOM_MACHINE_NAME"
> DISTRO = "arago"
> DISTRO_VERSION = "2017.12"
> TUNE_FEATURES = "arm armv7a vfp thumb neon
> callconvention-hard"
> TARGET_FPU = "hard"
> meta-processor-sdk = "HEAD:92db4d8023d88ab59fab2953e7447ec0bd5a6db1"
> meta-ros = "HEAD:e2566402ab108a19634354a934788109422cf409"
> meta-arago-distro
> meta-arago-extras = "HEAD:5b2a44b0c4d989133bc13d59398fd10375d351bb"
> meta-browser = "HEAD:26d50665e2f7223c5f4ad7481a8d2431e7cb55fb"
> meta-openamp = "HEAD:8a214032bfb7e8124bc1485c70c69f7d60abb819"
> meta-qt5 = "HEAD:2c9f0e4eb0e9097f6f872ec1e1d81768a8ab5f1b"
> meta-networking
> meta-ruby
> meta-python
> meta-oe
> meta-gnome
> meta-multimedia = "HEAD:b40116cf457b88a2db14b86fda9627fb34d56ae6"
> meta-ti = "HEAD:3dc08477529b31ce887bb22a08201a843ded48f0"
> meta-linaro-toolchain
> meta-optee = "HEAD:d73e794c7e7ebb1cc5bf495a52a72b26fb118250"
> meta = "HEAD:39fd8c129e2bff7f2f1649b7f6e036ccc50fd5d8"
> meta-custom = "########################################"
> meta-printing = "morty:72811bc3755d1a943fa2a2e79601781b44a77420"
>
>
> We run a Qt5 application using EGLFS but can no longer capture
> screenshots.
> In a previous yocto build based on Linux 3.x we were able to use a
> screenshot tool which effectively just read /dev/fb0 to a file.
>
> I believe this was a change to how the underlying drivers interact
> with the GPU/Screen - I've started reading up on KMS/DRM.
>
>
> Does anyone know is there a utility/tool which I could use to capture
> the Qt5 application as its drawn on screen?
>
>
> Regards,
> Evan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: ** Potentially Unsafe Email ** Re: Screenshot tool
2019-04-17 16:08 ` Evan O'Loughlin
@ 2019-04-24 16:15 ` Evan O'Loughlin
0 siblings, 0 replies; 4+ messages in thread
From: Evan O'Loughlin @ 2019-04-24 16:15 UTC (permalink / raw)
To: Evan O'Loughlin; +Cc: yocto
Hi all,
Just an update in case anyone else has run into the same issue.
Typically our app is run as follows:
./app -platform eglfs
But when I use the following I can capture the data displayed on-screen:
./app -platform linuxfb:fb=/dev/fb0
It may not be exactly what I wanted but it gives me a relatively straight-forward way to capture screenshots for our user documentation.
Credit goes to this comment https://stackoverflow.com/questions/50236156/making-a-qt-gui-application-run-on-a-framebuffer-in-linux#comment87592068_50236352
Regards,
Evan
-----Original Message-----
From: yocto-bounces@yoctoproject.org [mailto:yocto-bounces@yoctoproject.org] On Behalf Of Evan O'Loughlin
Sent: 17 April 2019 17:09
To: 'yoctoproject.org@herrie.org' <yoctoproject.org@herrie.org>
Cc: yocto@yoctoproject.org
Subject: ** Potentially Unsafe Email ** Re: [yocto] Screenshot tool
Hi Herman,
Thanks for providing links to the screenshooter source.
Based on your code I've tried implementing a similar method within our application but I still get a blank (black) image.
It's possible that under the hood the 'grabWindow' method is just saving the framebuffer.
Regards,
Evan
-----Original Message-----
From: Herman van Hazendonk [mailto:me@herrie.org]
Sent: 16 April 2019 10:19
To: Evan O'Loughlin <evan.oloughlin@vitalograph.ie>
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Screenshot tool
Hi Evan,
We don't currently have a 4.9 kernel running for our project since we're working mainly with mobile devices which are stuck on 3.4 and 3.18 kernels for now, however we do have small screenshot utility which we have as a plugin to our compositor which we have been using since early
Qt5 releases and we're currently on Qt 5.11/5.12.
Might be worth to give a go at your end:
https://github.com/webOS-ports/luna-next/blob/f5fc4c8af0d0c6f74f57d3963eb570966bc8fa55/plugins/compositor/screenshooter.cpp
And the header file at:
https://github.com/webOS-ports/luna-next/blob/f5fc4c8af0d0c6f74f57d3963eb570966bc8fa55/plugins/compositor/screenshooter.h
Hope this helps.
Best regards,
Herman
On 2019-04-16 09:15, Evan O'Loughlin wrote:
> Hi,
>
> I’m currently using yocto to build a custom OS based on Linux 4.9 for
> our hardware:
> Build Configuration:
> BB_VERSION = "1.32.0"
> BUILD_SYS = "x86_64-linux"
> NATIVELSBSTRING = "Ubuntu-16.04"
> TARGET_SYS = "arm-linux-gnueabi"
> MACHINE = "CUSTOM_MACHINE_NAME"
> DISTRO = "arago"
> DISTRO_VERSION = "2017.12"
> TUNE_FEATURES = "arm armv7a vfp thumb neon
> callconvention-hard"
> TARGET_FPU = "hard"
> meta-processor-sdk = "HEAD:92db4d8023d88ab59fab2953e7447ec0bd5a6db1"
> meta-ros = "HEAD:e2566402ab108a19634354a934788109422cf409"
> meta-arago-distro
> meta-arago-extras = "HEAD:5b2a44b0c4d989133bc13d59398fd10375d351bb"
> meta-browser = "HEAD:26d50665e2f7223c5f4ad7481a8d2431e7cb55fb"
> meta-openamp = "HEAD:8a214032bfb7e8124bc1485c70c69f7d60abb819"
> meta-qt5 = "HEAD:2c9f0e4eb0e9097f6f872ec1e1d81768a8ab5f1b"
> meta-networking
> meta-ruby
> meta-python
> meta-oe
> meta-gnome
> meta-multimedia = "HEAD:b40116cf457b88a2db14b86fda9627fb34d56ae6"
> meta-ti = "HEAD:3dc08477529b31ce887bb22a08201a843ded48f0"
> meta-linaro-toolchain
> meta-optee = "HEAD:d73e794c7e7ebb1cc5bf495a52a72b26fb118250"
> meta = "HEAD:39fd8c129e2bff7f2f1649b7f6e036ccc50fd5d8"
> meta-custom = "########################################"
> meta-printing = "morty:72811bc3755d1a943fa2a2e79601781b44a77420"
>
>
> We run a Qt5 application using EGLFS but can no longer capture
> screenshots.
> In a previous yocto build based on Linux 3.x we were able to use a
> screenshot tool which effectively just read /dev/fb0 to a file.
>
> I believe this was a change to how the underlying drivers interact
> with the GPU/Screen - I've started reading up on KMS/DRM.
>
>
> Does anyone know is there a utility/tool which I could use to capture
> the Qt5 application as its drawn on screen?
>
>
> Regards,
> Evan
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yocto@yoctoproject.org
https://lists.yoctoproject.org/listinfo/yocto
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-04-24 16:15 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2019-04-16 7:15 Screenshot tool Evan O'Loughlin
2019-04-16 9:19 ` Herman van Hazendonk
2019-04-17 16:08 ` Evan O'Loughlin
2019-04-24 16:15 ` ** Potentially Unsafe Email ** " Evan O'Loughlin
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