Re: [gst-devel] v4l2src question, is a frame returned with error (EIO) from dqbuf ioctl sent back to driver?

[Yiliang B. <yil...@gm...>]

Hi Stefen,

This is quite strange. In a v4l2 driver I am testing, if I set the frame
buffer state to VIDEOBUF_ERROR instead of VIDEOBUF_DONE when a DMA error is
detected, some buffers are lost and never sent back through qbuf ioctl
again. If I ignore the error, the driver runs fine. Let me check it again.

Thanks!
Yiliang

On Thu, Mar 25, 2010 at 1:30 PM, Stefan Kost <en...@ho...>wrote:

> Am 25.03.2010 11:35, schrieb yiliang:
> >
> > Hi,
> >
> > In gst_v4l2_buffer_pool_dqbuf, if the following system call return a
> buffer,
> > but with an error such as -EIO, will v4l2src re-queue the buffer to
> driver?
>
> yes.
>
> Stefan
> >
> >   if (v4l2_ioctl (pool->video_fd, VIDIOC_DQBUF, &buffer) >=0) {
> >   }
> >
> > Thanks,
> > Yiliang
> >
>
>
>
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