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authorTomasz Stanislawski <t.stanislaws@samsung.com>2011-08-10 10:37:47 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-01-10 23:17:45 -0200
commit0e8caaceff160ad821c83d798fc03812cb810560 (patch)
treefd5f0687bff110fddb62b8f22ac31f41e8bc11f6 /include
parentdab734ec95168488c4b32632e968ce885a083078 (diff)
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[media] v4l: add support for selection api
This patch introduces new api for a precise control of cropping and composing features for video devices. The new ioctls are VIDIOC_S_SELECTION and VIDIOC_G_SELECTION. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/videodev2.h46
-rw-r--r--include/media/v4l2-ioctl.h4
2 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index b2e1331ca76b..012a29604522 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -743,6 +743,48 @@ struct v4l2_crop {
struct v4l2_rect c;
};
+/* Hints for adjustments of selection rectangle */
+#define V4L2_SEL_FLAG_GE 0x00000001
+#define V4L2_SEL_FLAG_LE 0x00000002
+
+/* Selection targets */
+
+/* current cropping area */
+#define V4L2_SEL_TGT_CROP_ACTIVE 0
+/* default cropping area */
+#define V4L2_SEL_TGT_CROP_DEFAULT 1
+/* cropping bounds */
+#define V4L2_SEL_TGT_CROP_BOUNDS 2
+/* current composing area */
+#define V4L2_SEL_TGT_COMPOSE_ACTIVE 256
+/* default composing area */
+#define V4L2_SEL_TGT_COMPOSE_DEFAULT 257
+/* composing bounds */
+#define V4L2_SEL_TGT_COMPOSE_BOUNDS 258
+/* current composing area plus all padding pixels */
+#define V4L2_SEL_TGT_COMPOSE_PADDED 259
+
+/**
+ * struct v4l2_selection - selection info
+ * @type: buffer type (do not use *_MPLANE types)
+ * @target: selection target, used to choose one of possible rectangles
+ * @flags: constraints flags
+ * @r: coordinates of selection window
+ * @reserved: for future use, rounds structure size to 64 bytes, set to zero
+ *
+ * Hardware may use multiple helper window to process a video stream.
+ * The structure is used to exchange this selection areas between
+ * an application and a driver.
+ */
+struct v4l2_selection {
+ __u32 type;
+ __u32 target;
+ __u32 flags;
+ struct v4l2_rect r;
+ __u32 reserved[9];
+};
+
+
/*
* A N A L O G V I D E O S T A N D A R D
*/
@@ -2259,6 +2301,10 @@ struct v4l2_create_buffers {
#define VIDIOC_CREATE_BUFS _IOWR('V', 92, struct v4l2_create_buffers)
#define VIDIOC_PREPARE_BUF _IOWR('V', 93, struct v4l2_buffer)
+/* Experimental selection API */
+#define VIDIOC_G_SELECTION _IOWR('V', 94, struct v4l2_selection)
+#define VIDIOC_S_SELECTION _IOWR('V', 95, struct v4l2_selection)
+
/* Reminder: when adding new ioctls please add support for them to
drivers/media/video/v4l2-compat-ioctl32.c as well! */
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 4d1c74ad4c84..3f5d60fc5df6 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -196,6 +196,10 @@ struct v4l2_ioctl_ops {
struct v4l2_crop *a);
int (*vidioc_s_crop) (struct file *file, void *fh,
struct v4l2_crop *a);
+ int (*vidioc_g_selection) (struct file *file, void *fh,
+ struct v4l2_selection *s);
+ int (*vidioc_s_selection) (struct file *file, void *fh,
+ struct v4l2_selection *s);
/* Compression ioctls */
int (*vidioc_g_jpegcomp) (struct file *file, void *fh,
struct v4l2_jpegcompression *a);