I see. Ack, but please add a comment about this in the code.
On Mon, Apr 7, 2014 at 10:11 PM, Hans Verkuil wrote:
> From: Hans Verkuil
>
> When using write() to write data to an output video node the vb2 core
> should set timestamps if V4L2_BUF_FLAG_TIMESTAMP_COPY is set. Nobody
> else is able to provide this information with the write() operation.
>
> Signed-off-by: Hans Verkuil
Acked-by: Pawel Osciak
> ---
> drivers/media/v4l2-core/videobuf2-core.c | 6 ++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/media/v4l2-core/videobuf2-core.c
> b/drivers/media/v4l2-core/videobuf2-core.c
> index 2e448a7..b7de6be 100644
> --- a/drivers/media/v4l2-core/videobuf2-core.c
> +++ b/drivers/media/v4l2-core/videobuf2-core.c
> @@ -22,6 +22,7 @@
> #include
> #include
> #include
> +#include
> #include
>
> static int debug;
> @@ -2751,6 +2752,9 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q,
> char __user *data, size_
> {
> struct vb2_fileio_data *fileio;
> struct vb2_fileio_buf *buf;
> + bool set_timestamp = !read &&
> + (q->timestamp_flags & V4L2_BUF_FLAG_TIMESTAMP_MASK) ==
> + V4L2_BUF_FLAG_TIMESTAMP_COPY;
Please add an explicit comment why we are doing this here in the code.
> int ret, index;
>
> dprintk(3, "mode %s, offset %ld, count %zd, %sblocking\n",
> @@ -2852,6 +2856,8 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q,
> char __user *data, size_
> fileio->b.memory = q->memory;
> fileio->b.index = index;
> fileio->b.bytesused = buf->pos;
> + if (set_timestamp)
> + v4l2_get_timestamp(&fileio->b.timestamp);
> ret = vb2_internal_qbuf(q, &fileio->b);
> dprintk(5, "vb2_dbuf result: %d\n", ret);
> if (ret)
> --
> 1.9.1
>
--
Best regards,
Pawel Osciak
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