Re: screenshot for vt(4)

Sorry, forgot to mention that there are examples here:
http://barleycorn.oikumene.net/ports-patch/

On 2023年7月4日火曜日 0時44分37秒 JST, Hiroo Ono wrote:
> Hello,
>
> I made a patch to enable screenshot with vt(4). The patch is here.
> https://reviews.freebsd.org/D40858
>
> I would like to hear comments and reviews if it can be merged to FreeBSD.
> When I mentioned it on mastodon, the patch lacked one file, sorry.
> Please try this if you want to get the patch in one file.
> http://barleycorn.oikumene.net/ports-patch/0001-Implement-screenshot-with-vt-4.patch
>
> There are three types of screenshot.
> 1. vidcontrol -p text < /dev/ttyv0 > screenshot.txt
>   which generate plain text output.
> 2. vidcontrol -p term < /dev/ttyv0 > screenshot.txt
>  which generate text with ansi escape sequences.
> 3. vidcontrol -p raw < /dev/ttyv0 > screenshot.raw
>  which generate a raw picture file.
>
> The raw file can be converted to PNG via separate program.
> http://barleycorn.oikumene.net/ports-patch/vtraw2png.tar.gz 
> https://helixteamhub.cloud/individual674914/projects/vtraw2png/repositories/vtraw2png/tree/default
> It needs libpng (graphics/png).
> It only supports 32bit depth, but I think it is enough for 
> vt(4). Sorry if I am wrong.
>
> I only tested this patch on i386(vga) and amd64(efifb). The vga 
> fb does not support raw output (it does not have vt_fb_ioctl 
> function).
>
> Best regards.
>
>
>