We found videobuf2-core.h has a function
vb2_clear_last_buffer_dequeued to clear last_buffer_dequeued. We call
vb2_clear_last_buffer_dequeued in the driver when it gets CMD_START.
Everything works now.
On Mon, Oct 17, 2016 at 9:46 PM, Nicolas Dufresne wrote:
> Le samedi 15 octobre 2016 à 08:16 +0
Le samedi 15 octobre 2016 à 08:16 +0800, Wu-Cheng Li (李務誠) a écrit :
> last_buffer_dequeued is only cleared to false when CAPTURE queue is
> STREAMOFF (#1). Queuing a header to OUTPUT queue won't clear
> last_buffer_dequeued of CAPTURE queue. It looks to me that v4l2 core
> needs to intercept CMD_S
On Sat, Oct 15, 2016 at 2:20 AM, Nicolas Dufresne
wrote:
>
> Le mercredi 12 octobre 2016 à 23:33 +0800, Wu-Cheng Li (李務誠) a écrit :
> > I'm trying to use V4L2_DEC_CMD_STOP to implement flush. First the
> > userspace sent V4L2_DEC_CMD_STOP to initiate the flush. The driver
> > set
> > V4L2_BUF_FLAG
Le mercredi 12 octobre 2016 à 23:33 +0800, Wu-Cheng Li (李務誠) a écrit :
> I'm trying to use V4L2_DEC_CMD_STOP to implement flush. First the
> userspace sent V4L2_DEC_CMD_STOP to initiate the flush. The driver
> set
> V4L2_BUF_FLAG_LAST on the last CAPTURE buffer. I thought implementing
> V4L2_DEC_CM
Hi,
I'm trying to use V4L2_DEC_CMD_STOP to implement flush. First the
userspace sent V4L2_DEC_CMD_STOP to initiate the flush. The driver set
V4L2_BUF_FLAG_LAST on the last CAPTURE buffer. I thought implementing
V4L2_DEC_CMD_START in the driver was enough to start the decoder. But
last_buffer_dequeu
