From ebd7c50510f4b56285bb9fb4ba56a501c9c8f7df Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 11 Apr 2014 04:36:57 -0300 Subject: [PATCH] [media] vb2: set timestamp when using write() 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 Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/videobuf2-core.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 0f495f1d6946..07ab0677e259 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; @@ -2800,6 +2801,14 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ { struct vb2_fileio_data *fileio; struct vb2_fileio_buf *buf; + /* + * 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. + */ + bool set_timestamp = !read && + (q->timestamp_flags & V4L2_BUF_FLAG_TIMESTAMP_MASK) == + V4L2_BUF_FLAG_TIMESTAMP_COPY; int ret, index; dprintk(3, "mode %s, offset %ld, count %zd, %sblocking\n", @@ -2901,6 +2910,8 @@ 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) -- 2.20.1