videoout: Add rotation support

1 files changed, 10 insertions, 1 deletions

diff --git a/videoout.c b/videoout.c
index 51bed8b..f12ee68 100644
--- a/videoout.c
+++ b/videoout.c
@@ -54,11 +54,13 @@ struct videoout
 struct videoout *vo_init(const char *devname,
 			 const struct video_out_operations *ops,
 			 unsigned int buffers,
-			 struct v4l2_pix_format *format)
+			 struct v4l2_pix_format *format,
+			 unsigned int rotation)
 {
 	struct v4l2_pix_format pixfmt;
 	struct v4l2_format fmt;
 	struct videoout *vo;
+	int32_t ctrl;
 	int ret;
 
 	/* Allocate the video output object. */
@@ -76,6 +78,13 @@ struct videoout *vo_init(const char *devname,
 		goto error;
 	}
 
+	ctrl = rotation;
+	ret = v4l2_set_control(vo->dev, V4L2_CID_ROTATE, &ctrl);
+	if (ret < 0) {
+		perror("failed to configure rotation\n");
+		goto error;
+	}
+
 	pixfmt.pixelformat = format->pixelformat;
 	pixfmt.width = format->width;
 	pixfmt.height = format->height;