Re: saa7134_empress streaming via v4l2

[Hans Verkuil <hverkuil@xxxxxxxxx>]

On Tuesday 26 August 2008 22:27:03 Gordon Smith wrote:
> Hello -
> 
> I have a RTD Technologies VFG7350 (saa7134 based, two channel, 
hardware
> encoder per channel, no tuner).
> 
> Should v4l2 show MPEG extended controls for a saa7134_empress device?

Not in that kernel. It was broken.

> If so, 
> any hints about how to restore the controls?

I would love it if you could try this development tree: 
http://linuxtv.org/hg/~hverkuil/v4l-dvb-empress/

I literally merged the last change this evening to 'revive' the empress 
driver after it was solidly broken in recent kernels. It should have 
the MPEG controls and I would really like to know whether it is working 
for you.

For my BeholdTV M6 card I see the standard user controls on both 
devices, I get the private controls on the first device and I get the 
MPEG controls on the second device.

Regards,

	Hans

> 
> Below is control listing in 2.6.25-gentoo-r7 + v4l-dvb:
> ----------------------------------------
> $ v4l2-ctl  --list-ctrls --device=/dev/video2
> 
> User Controls
> 
>                      brightness (int)  : min=0 max=255 step=1 
default=128
> value=128
>                        contrast (int)  : min=0 max=127 step=1 
default=68
> value=68
>                      saturation (int)  : min=0 max=127 step=1 
default=64
> value=64
>                             hue (int)  : min=-128 max=127 step=1 
default=0
> value=0
>                          volume (int)  : min=-15 max=15 step=1 
default=0
> value=0
>                            mute (bool) : default=0 value=1
>                          mirror (bool) : default=0 value=0
> 
> MPEG Encoder Controls
> ----------------------------------------
> 
> Below is control listing in 2.6.22-gentoo-r10 (also shows "private
> controls"):
> ----------------------------------------
> $ v4l2-ctl  --list-ctrls --device=/dev/video2
>                      brightness (int)  : min=0 max=255 step=1 
default=128
> value=128
>                        contrast (int)  : min=0 max=127 step=1 
default=68
> value=68
>                      saturation (int)  : min=0 max=127 step=1 
default=64
> value=64
>                             hue (int)  : min=-128 max=127 step=1 
default=0
> value=0
>                          volume (int)  : min=-15 max=15 step=1 
default=0
> value=0
>                            mute (bool) : default=0 value=1
>                          mirror (bool) : default=0 value=0
>                          invert (bool) : default=0 value=0
>              y_offset_odd_field (int)  : min=0 max=128 step=0 
default=0
> value=0
>             y_offset_even_field (int)  : min=0 max=128 step=0 
default=0
> value=0
>                        automute (bool) : default=1 value=1
> ----------------------------------------
> 
> Any hints also about how to restore the "private controls" (invert -
> automute)?
> 
> Thanks.
> - Gordon
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