Re: [RFC/PATCH 0/5] v4l: New camera controls
Hi, all! On Wed, Dec 07, 2011 at 11:32:38AM +0100, Sylwester Nawrocki wrote: Hi Laurent, On 12/06/2011 01:34 PM, Laurent Pinchart wrote: On Sunday 04 December 2011 16:16:11 Sylwester Nawrocki wrote: Hi All, I put some effort in preparing a documentation for a couple of new controls in the camera control class. It's a preeliminary work, it's mainly just documentation. There is yet no patches for any driver using these controls. I just wanted to get some possible feedback on them, if this sort of stuff is welcome and what might need to be done differently. Thanks for the patches. Regarding patches 3/5, 4/5 and 5/5, we should perhaps try to brainstorm this a bit. There's more to exposure setting than just those controls, maybe it's time to think about a proper exposure API. We could start by gathering requirements on the list, and maybe have an IRC meeting if needed. Certainly the existing support for exposure setting in V4L2 is not sufficient even for mobile camera control. I'll try to prepare a list of requirements. It would be great to have a brainstorming session with more people experienced in this field. IRC meeting? The proposed controls seem useful for high level control --- for example, ISO means a combination of digital and analog gain, and also the unit is different. In general, I think that even if the three are concerned with similar issues, the ISO control definitely should belong to a different class: it requires making policy decisions rather than just providing access to the sensor features. Cheers, -- Sakari Ailus e-mail: sakari.ai...@iki.fi jabber/XMPP/Gmail: sai...@retiisi.org.uk -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [RFC/PATCH 0/5] v4l: New camera controls
Hi Laurent, On 12/06/2011 01:34 PM, Laurent Pinchart wrote: On Sunday 04 December 2011 16:16:11 Sylwester Nawrocki wrote: Hi All, I put some effort in preparing a documentation for a couple of new controls in the camera control class. It's a preeliminary work, it's mainly just documentation. There is yet no patches for any driver using these controls. I just wanted to get some possible feedback on them, if this sort of stuff is welcome and what might need to be done differently. Thanks for the patches. Regarding patches 3/5, 4/5 and 5/5, we should perhaps try to brainstorm this a bit. There's more to exposure setting than just those controls, maybe it's time to think about a proper exposure API. We could start by gathering requirements on the list, and maybe have an IRC meeting if needed. Certainly the existing support for exposure setting in V4L2 is not sufficient even for mobile camera control. I'll try to prepare a list of requirements. It would be great to have a brainstorming session with more people experienced in this field. Regards, -- Sylwester Nawrocki Samsung Poland RD Center -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [RFC/PATCH 0/5] v4l: New camera controls
Hi Sylwester, On Sunday 04 December 2011 16:16:11 Sylwester Nawrocki wrote: Hi All, I put some effort in preparing a documentation for a couple of new controls in the camera control class. It's a preeliminary work, it's mainly just documentation. There is yet no patches for any driver using these controls. I just wanted to get some possible feedback on them, if this sort of stuff is welcome and what might need to be done differently. Thanks for the patches. Regarding patches 3/5, 4/5 and 5/5, we should perhaps try to brainstorm this a bit. There's more to exposure setting than just those controls, maybe it's time to think about a proper exposure API. We could start by gathering requirements on the list, and maybe have an IRC meeting if needed. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[RFC/PATCH 0/5] v4l: New camera controls
Hi All, I put some effort in preparing a documentation for a couple of new controls in the camera control class. It's a preeliminary work, it's mainly just documentation. There is yet no patches for any driver using these controls. I just wanted to get some possible feedback on them, if this sort of stuff is welcome and what might need to be done differently. Thanks, Sylwester Heungjun Kim (1): uvc: Adapt the driver to new type of V4L2_CID_FOCUS_AUTO control Sylwester Nawrocki (4): v4l: Convert V4L2_CID_FOCUS_AUTO control to a menu control v4l: Add V4L2_CID_METERING_MODE camera control v4l: Add V4L2_CID_EXPOSURE_BIAS camera control v4l: Add V4L2_CID_ISO and V4L2_CID_ISO_AUTO controls Documentation/DocBook/media/v4l/biblio.xml | 11 +++ Documentation/DocBook/media/v4l/controls.xml | 122 - drivers/media/video/uvc/uvc_ctrl.c |9 ++- drivers/media/video/v4l2-ctrls.c | 19 - include/linux/videodev2.h| 19 5 files changed, 173 insertions(+), 7 deletions(-) -- 1.7.4.1 -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
