Re: [Lazarus] 5dpo components last update

[Marc Santhoff]

On Sa, 2016-02-13 at 20:12 +, Paulo Costa wrote:
> On 13-Feb-16 09:27, Marc Santhoff wrote:
> > Is that code for the user space driver open? Can you give a pointer,
> > repository link or similar?
> 
> http://www.linux-projects.org/modules/news/index.php?storytopic=0=30

Wonderful, thanks a lot!

Marc

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Re: [Lazarus] 5dpo components last update

[Paulo Costa]

On 13-Feb-16 09:27, Marc Santhoff wrote:

Is that code for the user space driver open? Can you give a pointer,
repository link or similar?


http://www.linux-projects.org/modules/news/index.php?storytopic=0=30

Paulo Costa

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Re: [Lazarus] 5dpo components last update

[Marc Santhoff]

On Do, 2016-02-11 at 22:59 +, Paulo Costa wrote:
> On 11-Feb-16 21:48, Michael Van Canneyt wrote:
> >> The most important changes are:
> >> - TSdpoSerial tested and working on the Raspberry Pi 2.
> >>
> >
> > Question: can these components be used to work with the pi's camera ?
> 
> 
> I have not tested yet (is in my to do list) but the UVC component should 
> work if the camera V4L driver does what is expected.
> In the beginning, a V4L driver didn't exist. Then, there was a user 
> space driver and now, I have read that a proper kernel driver exits.
> As soon as I can test it, I'll let you know.

Is that code for the user space driver open? Can you give a pointer,
repository link or similar?

Working on FreeBSD the V4L implementation is somewhat behind. From my
last tests only working at level of 4VL1 and having a user space driver
would give some mor possibilities for testing.

Marc

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Re: [Lazarus] 5dpo components last update

[Paulo Costa]

On 11-Feb-16 23:33, Michael Van Canneyt wrote:



On Thu, 11 Feb 2016, Paulo Costa wrote:


On 11-Feb-16 21:48, Michael Van Canneyt wrote:

The most important changes are:
- TSdpoSerial tested and working on the Raspberry Pi 2.



Question: can these components be used to work with the pi's camera ?


Now I can answer:

Yes! The UVC component (TSdpoVideo4L2) works with the native V4L2 driver!

With a raspberry pi 2, I've captured and displayed a 640x480 image at 30 
fps.

I can send you the code if you want.

The supplied example does not work out of the box because the gtk based 
form viewer component isn't working with the raspberry pi. I had to 
replace it with a bgrabitmap based one. That adds one more dependency. 
Do you have any suggestion for a fpc "native" alternative?


Paulo Costa


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Re: [Lazarus] 5dpo components last update

[Michael Van Canneyt]

On Fri, 12 Feb 2016, Paulo Costa wrote:


On 11-Feb-16 23:33, Michael Van Canneyt wrote:



On Thu, 11 Feb 2016, Paulo Costa wrote:


On 11-Feb-16 21:48, Michael Van Canneyt wrote:

The most important changes are:
- TSdpoSerial tested and working on the Raspberry Pi 2.



Question: can these components be used to work with the pi's camera ?


Now I can answer:

Yes! The UVC component (TSdpoVideo4L2) works with the native V4L2 driver!


Great news.



With a raspberry pi 2, I've captured and displayed a 640x480 image at 30 fps.
I can send you the code if you want.


Yes, please !!

Can you also send me the complete configuration you used ?
(model pi, raspbian version, fpc, laz etc.)

I would like to write an article for Blaise Pascal magazine, the editor will
be very pleased to hear this, he has been asking for it since a long time :)

The supplied example does not work out of the box because the gtk based form 
viewer component isn't working with the raspberry pi. I had to replace it 
with a bgrabitmap based one. That adds one more dependency. Do you have any 
suggestion for a fpc "native" alternative?


You mean an image component ? What is missing in the ones in fpImage ?

Michael.

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Re: [Lazarus] 5dpo components last update

[Michael Van Canneyt]

On Fri, 12 Feb 2016, Paulo Costa wrote:


On 12-Feb-16 16:04, Michael Van Canneyt wrote:

Can you also send me the complete configuration you used ?


The setup:

Raspberry Pi 2 Model B
Raspbian Jessie (Debian version 8.0)
Lazarus 1.2.4+dfsg2-1 (It is the version available on their repository. Call 
me lazy :)
fpc 2.6.4+dfsg-4+rpi1 (Again, it is the version available on their 
repository.)


I have update the repository to include the Raspberry Pi example.


Thank you.




I would like to write an article for Blaise Pascal magazine, the editor
will
be very pleased to hear this, he has been asking for it since a long
time :)


Nice :)


The supplied example does not work out of the box because the gtk
based form viewer component isn't working with the raspberry pi. I had
to replace it with a bgrabitmap based one. That adds one more
dependency. Do you have any suggestion for a fpc "native" alternative?


You mean an image component ? What is missing in the ones in fpImage ?


When I was investigating fpImage, in the wiki 
(ttp://wiki.freepascal.org/fcl-image) came across with this:
"fcl-image is written for maximal portability and maintainability and is 
quite slow. The main storage type is 16-bit RGBA, storing always 64-bit per 
pixel, and a function is called to get each pixel."


That information is old and outdated. 
You can perfectly have other storage formats in any buffer you like.


But a dependency on bgrabitmap is not the end of the world.

Michael.

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Re: [Lazarus] 5dpo components last update

[Paulo Costa]

On 12-Feb-16 16:04, Michael Van Canneyt wrote:

Can you also send me the complete configuration you used ?


The setup:

Raspberry Pi 2 Model B
Raspbian Jessie (Debian version 8.0)
Lazarus 1.2.4+dfsg2-1 (It is the version available on their repository. 
Call me lazy :)
fpc 2.6.4+dfsg-4+rpi1 (Again, it is the version available on their 
repository.)


I have update the repository to include the Raspberry Pi example.


I would like to write an article for Blaise Pascal magazine, the editor
will
be very pleased to hear this, he has been asking for it since a long
time :)


Nice :)


The supplied example does not work out of the box because the gtk
based form viewer component isn't working with the raspberry pi. I had
to replace it with a bgrabitmap based one. That adds one more
dependency. Do you have any suggestion for a fpc "native" alternative?


You mean an image component ? What is missing in the ones in fpImage ?


When I was investigating fpImage, in the wiki 
(ttp://wiki.freepascal.org/fcl-image) came across with this:
"fcl-image is written for maximal portability and maintainability and is 
quite slow. The main storage type is 16-bit RGBA, storing always 64-bit 
per pixel, and a function is called to get each pixel."


That does not seem good for showing a 640x480 image 30 times per second.
If the problem was only showing the image, the native overlay 
capabilities could take of that, but usually we want to show also the 
processed image.
For the bgrabitmap I need only to do a direct copy of the acquired 
buffer to its internal storage.


Regards,

Paulo Costa



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Re: [Lazarus] 5dpo components last update

[Paulo Costa]

On 11-Feb-16 21:48, Michael Van Canneyt wrote:

The most important changes are:
- TSdpoSerial tested and working on the Raspberry Pi 2.



Question: can these components be used to work with the pi's camera ?



I have not tested yet (is in my to do list) but the UVC component should 
work if the camera V4L driver does what is expected.
In the beginning, a V4L driver didn't exist. Then, there was a user 
space driver and now, I have read that a proper kernel driver exits.

As soon as I can test it, I'll let you know.

Regards,

Paulo Costa


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Re: [Lazarus] 5dpo components last update

[Michael Van Canneyt]

On Thu, 11 Feb 2016, Paulo Costa wrote:


On 11-Feb-16 21:48, Michael Van Canneyt wrote:

The most important changes are:
- TSdpoSerial tested and working on the Raspberry Pi 2.



Question: can these components be used to work with the pi's camera ?



I have not tested yet (is in my to do list) but the UVC component should work 
if the camera V4L driver does what is expected.
In the beginning, a V4L driver didn't exist. Then, there was a user space 
driver and now, I have read that a proper kernel driver exits.

As soon as I can test it, I'll let you know.


Great, I am eagerly awaiting the result of your tests !

Michael.

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Re: [Lazarus] 5dpo components last update

[Michael Van Canneyt]

On Thu, 11 Feb 2016, Paulo Costa wrote:


Hi,

The last update for the 5dpo components:
http://wiki.lazarus.freepascal.org/5dpo#About

can be found here:
https://sourceforge.net/p/sdpo-cl/mercurial/ci/default/tree/
or
https://sourceforge.net/projects/sdpo-cl/files/latest/download

The most important changes are:
- TSdpoSerial tested and working on the Raspberry Pi 2.



Question: can these components be used to work with the pi's camera ?

Michael.

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