Do you know vloopback device ? I dont remember the exact URL, but I think its related to motion project. Regards ----- Original Message ----- From: "Dag B" <comdot@xxxxxxxxxxxxx> To: <video4linux-list@xxxxxxxxxx>; <fusd-devel@xxxxxx> Sent: Thursday, December 13, 2001 1:19 PM Subject: Re: Virtual video device? > Tue, 11 Dec 2001 14:39:22 -0500 - bacterium@xxxxxxx > > Hello. > > Would it be possible to write a virtual video device (i.e. no hardware) > > that would take a series of frames and dump them to /dev/video as a > > video sequence which could then be viewed by another app? Has anyone > > already done this? Any hints on how I could do this? (Source code > > samples appreciated.) Ideally, it would be done without a kernel module > > (i.e. in user space). The v4l api draft isn't terribly descriptive. > > > > Thanx, > > Adrian. > > You can create a user-space *anything* which reacts to > read/write/open/close/ioctl just as any hardware device with the help of > FUSD. > > For example create a userspace soundcard which does audioprocessing your real > hardware isn't capable of. The userspace process uses FUSD to create whatever > devicefiles it needs. > > Some overhead must be expected, so high-bandwidth applications needs more > hardware. Latency may also become an issue. > > See: > http://www.circlemud.org/~jelson/software/fusd/ > > Dag B > > > > _______________________________________________ > Video4linux-list mailing list > Video4linux-list@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/video4linux-list >
