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[06/12,media] v4l: add V4L2_EVENT_BUF_QUEUED event

Message ID 20170616073915.5027-7-gustavo@padovan.org (mailing list archive)
State Changes Requested, archived
Headers

Commit Message

Gustavo F. Padovan June 16, 2017, 7:39 a.m. UTC 
  From: Gustavo Padovan <gustavo.padovan@collabora.com>

Add a new event the userspace can subscribe to receive notifications
when a buffer is queued onto the driver. The event provides the index of
the queued buffer.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
---
 include/uapi/linux/videodev2.h | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Mauro Carvalho Chehab June 30, 2017, noon UTC | #1 
Em Fri, 16 Jun 2017 16:39:09 +0900
Gustavo Padovan <gustavo@padovan.org> escreveu:

> From: Gustavo Padovan <gustavo.padovan@collabora.com>
> 
> Add a new event the userspace can subscribe to receive notifications
> when a buffer is queued onto the driver. The event provides the index of
> the queued buffer.

If you're changing uAPI, you need to update media uAPI book as well.
> 
> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
> ---
>  include/uapi/linux/videodev2.h | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 750d511..c2eda75 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -2150,6 +2150,7 @@ struct v4l2_streamparm {
>  #define V4L2_EVENT_FRAME_SYNC			4
>  #define V4L2_EVENT_SOURCE_CHANGE		5
>  #define V4L2_EVENT_MOTION_DET			6
> +#define V4L2_EVENT_BUF_QUEUED			7
>  #define V4L2_EVENT_PRIVATE_START		0x08000000
>  
>  /* Payload for V4L2_EVENT_VSYNC */
> @@ -2202,6 +2203,10 @@ struct v4l2_event_motion_det {
>  	__u32 region_mask;
>  };
>  
> +struct v4l2_event_buf_queued {
> +	__u32 index;
> +};
> +
>  struct v4l2_event {
>  	__u32				type;
>  	union {
> @@ -2210,6 +2215,7 @@ struct v4l2_event {
>  		struct v4l2_event_frame_sync	frame_sync;
>  		struct v4l2_event_src_change	src_change;
>  		struct v4l2_event_motion_det	motion_det;
> +		struct v4l2_event_buf_queued	buf_queued;
>  		__u8				data[64];
>  	} u;
>  	__u32				pending;
diff mbox

Patch

diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 750d511..c2eda75 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -2150,6 +2150,7 @@  struct v4l2_streamparm {
 #define V4L2_EVENT_FRAME_SYNC			4
 #define V4L2_EVENT_SOURCE_CHANGE		5
 #define V4L2_EVENT_MOTION_DET			6
+#define V4L2_EVENT_BUF_QUEUED			7
 #define V4L2_EVENT_PRIVATE_START		0x08000000
 
 /* Payload for V4L2_EVENT_VSYNC */
@@ -2202,6 +2203,10 @@  struct v4l2_event_motion_det {
 	__u32 region_mask;
 };
 
+struct v4l2_event_buf_queued {
+	__u32 index;
+};
+
 struct v4l2_event {
 	__u32				type;
 	union {
@@ -2210,6 +2215,7 @@  struct v4l2_event {
 		struct v4l2_event_frame_sync	frame_sync;
 		struct v4l2_event_src_change	src_change;
 		struct v4l2_event_motion_det	motion_det;
+		struct v4l2_event_buf_queued	buf_queued;
 		__u8				data[64];
 	} u;
 	__u32				pending;