From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx>
For explicit synchronization (and soon for HAL3/Request API) we need
the v4l2-driver to guarantee the ordering which the buffer were queued
by userspace. This is already true for many drivers, but we never had
the need to say it.
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx>
---
include/media/videobuf2-core.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index aa43e43..a8b800e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -491,6 +491,9 @@ struct vb2_buf_ops {
* @last_buffer_dequeued: used in poll() and DQBUF to immediately return if the
* last decoded buffer was already dequeued. Set for capture queues
* when a buffer with the V4L2_BUF_FLAG_LAST is dequeued.
+ * @ordered: if the driver can guarantee that the queue will be ordered or not.
+ * The default is not ordered unless the driver sets this flag. It
+ * is mandatory for using explicit fences.
* @fileio: file io emulator internal data, used only if emulator is active
* @threadio: thread io internal data, used only if thread is active
*/
@@ -541,6 +544,7 @@ struct vb2_queue {
unsigned int is_output:1;
unsigned int copy_timestamp:1;
unsigned int last_buffer_dequeued:1;
+ unsigned int ordered:1;
struct vb2_fileio_data *fileio;
struct vb2_threadio_data *threadio;
--
2.9.4
