[PATCH v11 18/36] media: subdev: increase V4L2_FRAME_DESC_ENTRY_MAX to 8

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



V4L2_FRAME_DESC_ENTRY_MAX is currently set to 4. In theory it's possible
to have an arbitrary amount of streams in a single pad, so preferably
there should be no hardcoded maximum number.

However, I believe a reasonable max is 8, which would cover a CSI-2 pad
with 4 streams of pixel data and 4 streams of metadata.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Reviewed-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
---
 include/media/v4l2-subdev.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index eb7433b27043..6c28b0fa4fe0 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -360,7 +360,11 @@ struct v4l2_mbus_frame_desc_entry {
 	} bus;
 };
 
-#define V4L2_FRAME_DESC_ENTRY_MAX	4
+ /*
+  * FIXME: If this number is too small, it should be dropped altogether and the
+  * API switched to a dynamic number of frame descriptor entries.
+  */
+#define V4L2_FRAME_DESC_ENTRY_MAX	8
 
 /**
  * enum v4l2_mbus_frame_desc_type - media bus frame description type
-- 
2.25.1




[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]

  Powered by Linux