Guennadi Liakhovetski wrote:
On Fri, 25 Feb 2011, Sakari Ailus wrote:
On Fri, Feb 25, 2011 at 06:08:07PM +0100, Guennadi Liakhovetski wrote:
Hi Sakari
Hi Guennadi,
On Fri, 25 Feb 2011, Sakari Ailus wrote:
I agree with that. Flash synchronisation is just one of the many parameters
that
On Wed, 2 Mar 2011, Hans Verkuil wrote:
On Wednesday, March 02, 2011 18:51:43 Guennadi Liakhovetski wrote:
...Just occurred to me:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans Verkuil wrote:
On Thursday, March 03, 2011 09:02:20 Guennadi Liakhovetski wrote:
On Wed, 2 Mar 2011, Hans Verkuil wrote:
On Wednesday, March 02, 2011 18:51:43 Guennadi Liakhovetski wrote:
...Just occurred to me:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011,
Hi Andy,
On Thursday 03 March 2011 02:05:00 Andy Walls wrote:
On Wed, 2011-03-02 at 19:19 +0100, Hans Verkuil wrote:
On Wednesday, March 02, 2011 18:51:43 Guennadi Liakhovetski wrote:
...Just occurred to me:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011,
On Thu, 2011-03-03 at 12:50 +0100, Laurent Pinchart wrote:
Hi Andy,
On Thursday 03 March 2011 02:05:00 Andy Walls wrote:
On Wed, 2011-03-02 at 19:19 +0100, Hans Verkuil wrote:
On Wednesday, March 02, 2011 18:51:43 Guennadi Liakhovetski wrote:
...Just occurred to me:
On Mon,
Hi Andy,
On Thursday 03 March 2011 14:56:25 Andy Walls wrote:
On Thu, 2011-03-03 at 12:50 +0100, Laurent Pinchart wrote:
On Thursday 03 March 2011 02:05:00 Andy Walls wrote:
On Wed, 2011-03-02 at 19:19 +0100, Hans Verkuil wrote:
On Wednesday, March 02, 2011 18:51:43 Guennadi
On Thu, Mar 03, 2011 at 08:56:25AM -0500, Andy Walls wrote:
With embedded platforms, like a mobile phone, are the LEDs really tied
to the camera device: controlled by the GPIOs from the camera bridge
chip or sensor chip? Or are they more general purpose peripherals, not
necessarily tied to
On Thu, 2011-03-03 at 15:04 +0100, Laurent Pinchart wrote:
The LED API is too limited. We need to program flash time, pre-flash time,
current limits, report overheat/overcurrent events, ... See
http://www.analog.com/static/imported-files/data_sheets/ADP1653.pdf for an
example of the
...Just occurred to me:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans Verkuil wrote:
Does anyone know which drivers stop capture if there are no buffers
available?
I'm not aware of any.
Many
On Wednesday, March 02, 2011 18:51:43 Guennadi Liakhovetski wrote:
...Just occurred to me:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans Verkuil wrote:
Does anyone know which drivers stop capture
On Wed, 2011-03-02 at 19:19 +0100, Hans Verkuil wrote:
On Wednesday, March 02, 2011 18:51:43 Guennadi Liakhovetski wrote:
...Just occurred to me:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans
Hi Guennadi,
I have another question about capture, not related with exact this topic.
Dose the sensor which you use make EXIF information in itself while capturing??
If it is right, how to deliver EXIF information from v4l2(subdev or media
driver)
to userapplication?
Regards,
Heungjun Kim
Hi
On Thu, 3 Mar 2011, Kim, HeungJun wrote:
Hi Guennadi,
I have another question about capture, not related with exact this topic.
Dose the sensor which you use make EXIF information in itself while
capturing??
So far we have no sensors, about which we know, that they're delivering
On Saturday 26 February 2011 14:03:53 Guennadi Liakhovetski wrote:
On Sat, 26 Feb 2011, Hans Verkuil wrote:
On Friday, February 25, 2011 18:08:07 Guennadi Liakhovetski wrote:
snip
configure the sensor to react on an external trigger provided by
the flash controller is needed,
Hi Hans,
On Saturday 26 February 2011 14:56:18 Hans Verkuil wrote:
On Saturday, February 26, 2011 14:39:54 Sylwester Nawrocki wrote:
On 02/26/2011 02:03 PM, Guennadi Liakhovetski wrote:
On Sat, 26 Feb 2011, Hans Verkuil wrote:
On Friday, February 25, 2011 18:08:07 Guennadi Liakhovetski
On Monday 28 February 2011 11:40:31 Hans Verkuil wrote:
On Monday, February 28, 2011 11:28:58 Laurent Pinchart wrote:
On Saturday 26 February 2011 14:56:18 Hans Verkuil wrote:
On Saturday, February 26, 2011 14:39:54 Sylwester Nawrocki wrote:
On 02/26/2011 02:03 PM, Guennadi Liakhovetski
On Monday, February 28, 2011 11:28:58 Laurent Pinchart wrote:
Hi Hans,
On Saturday 26 February 2011 14:56:18 Hans Verkuil wrote:
On Saturday, February 26, 2011 14:39:54 Sylwester Nawrocki wrote:
On 02/26/2011 02:03 PM, Guennadi Liakhovetski wrote:
On Sat, 26 Feb 2011, Hans Verkuil
On Mon, 28 Feb 2011, Hans Verkuil wrote:
On Monday, February 28, 2011 11:28:58 Laurent Pinchart wrote:
Hi Hans,
On Saturday 26 February 2011 14:56:18 Hans Verkuil wrote:
On Saturday, February 26, 2011 14:39:54 Sylwester Nawrocki wrote:
On 02/26/2011 02:03 PM, Guennadi Liakhovetski
Hi Guennadi,
On Monday 28 February 2011 12:02:41 Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans Verkuil wrote:
On Monday, February 28, 2011 11:28:58 Laurent Pinchart wrote:
On Saturday 26 February 2011 14:56:18 Hans Verkuil wrote:
On Saturday, February 26, 2011 14:39:54
On Monday, February 28, 2011 12:07:33 Laurent Pinchart wrote:
Hi Guennadi,
On Monday 28 February 2011 12:02:41 Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans Verkuil wrote:
On Monday, February 28, 2011 11:28:58 Laurent Pinchart wrote:
On Saturday 26 February 2011 14:56:18 Hans
On Monday 28 February 2011 12:17:12 Hans Verkuil wrote:
On Monday, February 28, 2011 12:07:33 Laurent Pinchart wrote:
On Monday 28 February 2011 12:02:41 Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans Verkuil wrote:
[snip]
It was my understanding that the streaming would stop
On Sun, 27 Feb 2011, Sakari Ailus wrote:
Hi,
Guennadi Liakhovetski wrote:
On Fri, 25 Feb 2011, Sakari Ailus wrote:
Hi Guennadi,
Guennadi Liakhovetski wrote:
In principle - yes, and yes, I do realise, that the couple of controls,
that I've proposed only cover a very
On Mon, 28 Feb 2011, Laurent Pinchart wrote:
I don't think snapshot capture is *that* special. I don't expect most
embedded SoCs to implement snapshot capture in hardware. What usually
happens is that the hardware provides some support (like two independent
video streams for
On Mon, 28 Feb 2011, Hans Verkuil wrote:
Does anyone know which drivers stop capture if there are no buffers
available?
I'm not aware of any.
Many soc-camera hosts do that.
I think this is certainly a good initial approach.
Can someone make a list of things needed for flash/snapshot?
On Fri, 25 Feb 2011, Guennadi Liakhovetski wrote:
On Fri, 25 Feb 2011, Sakari Ailus wrote:
On Fri, Feb 25, 2011 at 06:08:07PM +0100, Guennadi Liakhovetski wrote:
What we could also do, we could add an optional callback to subdev
(core?)
operations, which, if activated, the host
On Mon, Feb 28, 2011 at 12:37:06PM +0100, Guennadi Liakhovetski wrote:
So, you'd also need a separate control for external exposure, there are
also sensors, that can be configured to different shutter / exposure /
readout sequence controlling... No, we don't have to support all that
On Mon, 28 Feb 2011, Sakari Ailus wrote:
On Mon, Feb 28, 2011 at 12:37:06PM +0100, Guennadi Liakhovetski wrote:
So, you'd also need a separate control for external exposure, there are
also sensors, that can be configured to different shutter / exposure /
readout sequence controlling...
On Mon, 2011-02-28 at 12:17 +0100, Hans Verkuil wrote:
On Monday, February 28, 2011 12:07:33 Laurent Pinchart wrote:
So, do I understand it right, that currently there are drivers, that
overwrite the last buffers while waiting for a new one, and ones, that
stop capture for that time.
On Mon, 2011-02-28 at 08:33 -0500, Andy Walls wrote:
On Mon, 2011-02-28 at 12:17 +0100, Hans Verkuil wrote:
On Monday, February 28, 2011 12:07:33 Laurent Pinchart wrote:
So, do I understand it right, that currently there are drivers, that
overwrite the last buffers while waiting for a
On Mon, Feb 28, 2011 at 12:20:52PM +0100, Guennadi Liakhovetski wrote:
Sorry, not sure what you mean. Do you mean different APIs when the flash
is controlled directly by the sensor and by an external controller? No, of
course we need one API, but you either issue those ioctl()s to the
On Mon, Feb 28, 2011 at 01:44:25PM +0100, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Sakari Ailus wrote:
On Mon, Feb 28, 2011 at 12:37:06PM +0100, Guennadi Liakhovetski wrote:
So, you'd also need a separate control for external exposure, there are
also sensors, that can be
On Mon, 28 Feb 2011, Guennadi Liakhovetski wrote:
On Mon, 28 Feb 2011, Hans Verkuil wrote:
Does anyone know which drivers stop capture if there are no buffers
available?
I'm not aware of any.
Many soc-camera hosts do that.
I think this is certainly a good initial approach.
On Friday, February 25, 2011 18:08:07 Guennadi Liakhovetski wrote:
snip
configure the sensor to react on an external trigger provided by the
flash
controller is needed, and that could be a control on the flash
sub-device.
What we would probably miss is a way to issue a
On Sat, 26 Feb 2011, Hans Verkuil wrote:
On Friday, February 25, 2011 18:08:07 Guennadi Liakhovetski wrote:
snip
configure the sensor to react on an external trigger provided by the
flash
controller is needed, and that could be a control on the flash
sub-device.
What
On 02/26/2011 02:03 PM, Guennadi Liakhovetski wrote:
On Sat, 26 Feb 2011, Hans Verkuil wrote:
On Friday, February 25, 2011 18:08:07 Guennadi Liakhovetski wrote:
snip
configure the sensor to react on an external trigger provided by the flash
controller is needed, and that could be a
On Saturday, February 26, 2011 14:39:54 Sylwester Nawrocki wrote:
On 02/26/2011 02:03 PM, Guennadi Liakhovetski wrote:
On Sat, 26 Feb 2011, Hans Verkuil wrote:
On Friday, February 25, 2011 18:08:07 Guennadi Liakhovetski wrote:
snip
configure the sensor to react on an external
Hi Hans,
On 02/26/2011 02:56 PM, Hans Verkuil wrote:
On Saturday, February 26, 2011 14:39:54 Sylwester Nawrocki wrote:
On 02/26/2011 02:03 PM, Guennadi Liakhovetski wrote:
On Sat, 26 Feb 2011, Hans Verkuil wrote:
On Friday, February 25, 2011 18:08:07 Guennadi Liakhovetski wrote:
snip
Hi,
On Thursday 24 February 2011 18:57:22 Kim HeungJun wrote:
Hi Guennadi,
I think, it's maybe a good suggestion for current trend! ( I'm not sure
this express *trend* is right :))
But, the flash or strobe control connected with sensor can be controlled by
user application directly, not
On Fri, Feb 25, 2011 at 11:05:05AM +0100, Laurent Pinchart wrote:
Hi,
Hi,
On Thursday 24 February 2011 18:57:22 Kim HeungJun wrote:
Hi Guennadi,
I think, it's maybe a good suggestion for current trend! ( I'm not sure
this express *trend* is right :))
But, the flash or strobe
Hi Laurent
On Fri, 25 Feb 2011, Laurent Pinchart wrote:
Hi,
On Thursday 24 February 2011 18:57:22 Kim HeungJun wrote:
Hi Guennadi,
I think, it's maybe a good suggestion for current trend! ( I'm not sure
this express *trend* is right :))
But, the flash or strobe control
Hi Sakari
On Fri, 25 Feb 2011, Sakari Ailus wrote:
On Fri, Feb 25, 2011 at 11:05:05AM +0100, Laurent Pinchart wrote:
Hi,
Hi,
On Thursday 24 February 2011 18:57:22 Kim HeungJun wrote:
Hi Guennadi,
I think, it's maybe a good suggestion for current trend! ( I'm not sure
this
Hi Guennadi,
Guennadi Liakhovetski wrote:
In principle - yes, and yes, I do realise, that the couple of controls,
that I've proposed only cover a very minor subset of the whole flash
function palette. The purposes of my RFC were:
Why would there be a different interface for controlling the
On Fri, Feb 25, 2011 at 06:08:07PM +0100, Guennadi Liakhovetski wrote:
Hi Sakari
Hi Guennadi,
On Fri, 25 Feb 2011, Sakari Ailus wrote:
I agree with that. Flash synchronisation is just one of the many parameters
that would benefit from frame level synchronisation. Exposure time, gain
etc.
On Fri, 25 Feb 2011, Sakari Ailus wrote:
Hi Guennadi,
Guennadi Liakhovetski wrote:
In principle - yes, and yes, I do realise, that the couple of controls,
that I've proposed only cover a very minor subset of the whole flash
function palette. The purposes of my RFC were:
Why would
On Fri, 25 Feb 2011, Sakari Ailus wrote:
On Fri, Feb 25, 2011 at 06:08:07PM +0100, Guennadi Liakhovetski wrote:
Hi Sakari
Hi Guennadi,
On Fri, 25 Feb 2011, Sakari Ailus wrote:
I agree with that. Flash synchronisation is just one of the many
parameters
that would benefit from
Agenda.
===
In a recent RFC [1] I proposed V4L2 API extensions to support fast switching
between multiple capture modes or data formats. However, this is not sufficient
to efficiently leverage snapshot capabilities of existing hardware - sensors and
SoCs, and to satisfy user-space needs, a
On Thursday, February 24, 2011 13:18:39 Guennadi Liakhovetski wrote:
Agenda.
===
In a recent RFC [1] I proposed V4L2 API extensions to support fast switching
between multiple capture modes or data formats. However, this is not
sufficient
to efficiently leverage snapshot capabilities
Hi Guennadi,
I think, it's maybe a good suggestion for current trend! ( I'm not sure this
express *trend* is right :))
But, the flash or strobe control connected with sensor can be controlled by
user application
directly, not in the sensor subdev device. For example, let's think that there
is
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