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authorSakari Ailus <sakari.ailus@iki.fi>2011-10-14 21:14:26 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-04-10 22:00:41 +0400
commitae184cda8d0eebfea6cf217abc3f94a7cfffe24d (patch)
treeb158537e0b4f894578748784f581a18af5b2cc0c /include/linux/v4l2-subdev.h
parentc520331a52094182d6682fa7d6f630bdfbfc2974 (diff)
downloadlinux-ae184cda8d0eebfea6cf217abc3f94a7cfffe24d.tar.xz
[media] v4l: VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION IOCTLs
Add support for VIDIOC_SUBDEV_S_SELECTION and VIDIOC_SUBDEV_G_SELECTION IOCTLs. They replace functionality provided by VIDIOC_SUBDEV_S_CROP and VIDIOC_SUBDEV_G_CROP IOCTLs and also add new functionality (composing). VIDIOC_SUBDEV_G_CROP and VIDIOC_SUBDEV_S_CROP continue to be supported. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/linux/v4l2-subdev.h')
-rw-r--r--include/linux/v4l2-subdev.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
index ed29cbbebfef..812019ee1e06 100644
--- a/include/linux/v4l2-subdev.h
+++ b/include/linux/v4l2-subdev.h
@@ -123,6 +123,43 @@ struct v4l2_subdev_frame_interval_enum {
__u32 reserved[9];
};
+#define V4L2_SUBDEV_SEL_FLAG_SIZE_GE (1 << 0)
+#define V4L2_SUBDEV_SEL_FLAG_SIZE_LE (1 << 1)
+#define V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG (1 << 2)
+
+/* active cropping area */
+#define V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL 0x0000
+/* cropping bounds */
+#define V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS 0x0002
+/* current composing area */
+#define V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL 0x0100
+/* composing bounds */
+#define V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS 0x0102
+
+
+/**
+ * struct v4l2_subdev_selection - selection info
+ *
+ * @which: either V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY
+ * @pad: pad number, as reported by the media API
+ * @target: selection target, used to choose one of possible rectangles
+ * @flags: constraint flags
+ * @r: coordinates of the selection window
+ * @reserved: for future use, set to zero for now
+ *
+ * Hardware may use multiple helper windows to process a video stream.
+ * The structure is used to exchange this selection areas between
+ * an application and a driver.
+ */
+struct v4l2_subdev_selection {
+ __u32 which;
+ __u32 pad;
+ __u32 target;
+ __u32 flags;
+ struct v4l2_rect r;
+ __u32 reserved[8];
+};
+
#define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_format)
#define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_format)
#define VIDIOC_SUBDEV_G_FRAME_INTERVAL \
@@ -137,5 +174,9 @@ struct v4l2_subdev_frame_interval_enum {
_IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
#define VIDIOC_SUBDEV_G_CROP _IOWR('V', 59, struct v4l2_subdev_crop)
#define VIDIOC_SUBDEV_S_CROP _IOWR('V', 60, struct v4l2_subdev_crop)
+#define VIDIOC_SUBDEV_G_SELECTION \
+ _IOWR('V', 61, struct v4l2_subdev_selection)
+#define VIDIOC_SUBDEV_S_SELECTION \
+ _IOWR('V', 62, struct v4l2_subdev_selection)
#endif