V4L/DVB (4672): Frame format enumeration (1/2)
Add VIDIOC_ENUM_FRAMESIZES and VIDIOC_ENUM_FRAMEINTERVALS ioctls to enumerate
supported frame sizes and frame intervals.
Signed-off-by: Martin Rubli <martin.rubli@epfl.ch>
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 44c59da..253a7ed 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -277,6 +277,79 @@
#define V4L2_FMT_FLAG_COMPRESSED 0x0001
/*
+ * F R A M E S I Z E E N U M E R A T I O N
+ */
+enum v4l2_frmsizetypes
+{
+ V4L2_FRMSIZE_TYPE_DISCRETE = 1,
+ V4L2_FRMSIZE_TYPE_CONTINUOUS = 2,
+ V4L2_FRMSIZE_TYPE_STEPWISE = 3,
+};
+
+struct v4l2_frmsize_discrete
+{
+ __u32 width; /* Frame width [pixel] */
+ __u32 height; /* Frame height [pixel] */
+};
+
+struct v4l2_frmsize_stepwise
+{
+ __u32 min_width; /* Minimum frame width [pixel] */
+ __u32 max_width; /* Maximum frame width [pixel] */
+ __u32 step_width; /* Frame width step size [pixel] */
+ __u32 min_height; /* Minimum frame height [pixel] */
+ __u32 max_height; /* Maximum frame height [pixel] */
+ __u32 step_height; /* Frame height step size [pixel] */
+};
+
+struct v4l2_frmsizeenum
+{
+ __u32 index; /* Frame size number */
+ __u32 pixel_format; /* Pixel format */
+ __u32 type; /* Frame size type the device supports. */
+
+ union { /* Frame size */
+ struct v4l2_frmsize_discrete discrete;
+ struct v4l2_frmsize_stepwise stepwise;
+ };
+
+ __u32 reserved[2]; /* Reserved space for future use */
+};
+
+/*
+ * F R A M E R A T E E N U M E R A T I O N
+ */
+enum v4l2_frmivaltypes
+{
+ V4L2_FRMIVAL_TYPE_DISCRETE = 1,
+ V4L2_FRMIVAL_TYPE_CONTINUOUS = 2,
+ V4L2_FRMIVAL_TYPE_STEPWISE = 3,
+};
+
+struct v4l2_frmival_stepwise
+{
+ struct v4l2_fract min; /* Minimum frame interval [s] */
+ struct v4l2_fract max; /* Maximum frame interval [s] */
+ struct v4l2_fract step; /* Frame interval step size [s] */
+};
+
+struct v4l2_frmivalenum
+{
+ __u32 index; /* Frame format index */
+ __u32 pixel_format; /* Pixel format */
+ __u32 width; /* Frame width */
+ __u32 height; /* Frame height */
+ __u32 type; /* Frame interval type the device supports. */
+
+ union { /* Frame interval */
+ struct v4l2_fract discrete;
+ struct v4l2_frmival_stepwise stepwise;
+ };
+
+ __u32 reserved[2]; /* Reserved space for future use */
+};
+
+/*
* T I M E C O D E
*/
struct v4l2_timecode
@@ -1249,6 +1322,8 @@
#define VIDIOC_G_EXT_CTRLS _IOWR ('V', 71, struct v4l2_ext_controls)
#define VIDIOC_S_EXT_CTRLS _IOWR ('V', 72, struct v4l2_ext_controls)
#define VIDIOC_TRY_EXT_CTRLS _IOWR ('V', 73, struct v4l2_ext_controls)
+#define VIDIOC_ENUM_FRAMESIZES _IOWR ('V', 74, struct v4l2_frmsizeenum)
+#define VIDIOC_ENUM_FRAMEINTERVALS _IOWR ('V', 75, struct v4l2_frmivalenum)
#ifdef __OLD_VIDIOC_
/* for compatibility, will go away some day */