Add a copy of V4L2 kernel headers

To make compilation possible on older (< v3.6) kernels, include a
private copy of the V4L2 headers. API availability is checked and
handled at runtime.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 170 insertions, 0 deletions

diff --git a/src/linux/v4l2-subdev.h b/src/linux/v4l2-subdev.h
new file mode 100644
index 0000000..8c57ee9
--- /dev/null
+++ b/src/linux/v4l2-subdev.h
@@ -0,0 +1,170 @@
+/*
+ * V4L2 subdev userspace API
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *	     Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __LINUX_V4L2_SUBDEV_H
+#define __LINUX_V4L2_SUBDEV_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <linux/v4l2-common.h>
+#include <linux/v4l2-mediabus.h>
+
+/**
+ * enum v4l2_subdev_format_whence - Media bus format type
+ * @V4L2_SUBDEV_FORMAT_TRY: try format, for negotiation only
+ * @V4L2_SUBDEV_FORMAT_ACTIVE: active format, applied to the device
+ */
+enum v4l2_subdev_format_whence {
+	V4L2_SUBDEV_FORMAT_TRY = 0,
+	V4L2_SUBDEV_FORMAT_ACTIVE = 1,
+};
+
+/**
+ * struct v4l2_subdev_format - Pad-level media bus format
+ * @which: format type (from enum v4l2_subdev_format_whence)
+ * @pad: pad number, as reported by the media API
+ * @format: media bus format (format code and frame size)
+ */
+struct v4l2_subdev_format {
+	__u32 which;
+	__u32 pad;
+	struct v4l2_mbus_framefmt format;
+	__u32 reserved[8];
+};
+
+/**
+ * struct v4l2_subdev_crop - Pad-level crop settings
+ * @which: format type (from enum v4l2_subdev_format_whence)
+ * @pad: pad number, as reported by the media API
+ * @rect: pad crop rectangle boundaries
+ */
+struct v4l2_subdev_crop {
+	__u32 which;
+	__u32 pad;
+	struct v4l2_rect rect;
+	__u32 reserved[8];
+};
+
+/**
+ * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
+ * @pad: pad number, as reported by the media API
+ * @index: format index during enumeration
+ * @code: format code (from enum v4l2_mbus_pixelcode)
+ */
+struct v4l2_subdev_mbus_code_enum {
+	__u32 pad;
+	__u32 index;
+	__u32 code;
+	__u32 reserved[9];
+};
+
+/**
+ * struct v4l2_subdev_frame_size_enum - Media bus format enumeration
+ * @pad: pad number, as reported by the media API
+ * @index: format index during enumeration
+ * @code: format code (from enum v4l2_mbus_pixelcode)
+ */
+struct v4l2_subdev_frame_size_enum {
+	__u32 index;
+	__u32 pad;
+	__u32 code;
+	__u32 min_width;
+	__u32 max_width;
+	__u32 min_height;
+	__u32 max_height;
+	__u32 reserved[9];
+};
+
+/**
+ * struct v4l2_subdev_frame_interval - Pad-level frame rate
+ * @pad: pad number, as reported by the media API
+ * @interval: frame interval in seconds
+ */
+struct v4l2_subdev_frame_interval {
+	__u32 pad;
+	struct v4l2_fract interval;
+	__u32 reserved[9];
+};
+
+/**
+ * struct v4l2_subdev_frame_interval_enum - Frame interval enumeration
+ * @pad: pad number, as reported by the media API
+ * @index: frame interval index during enumeration
+ * @code: format code (from enum v4l2_mbus_pixelcode)
+ * @width: frame width in pixels
+ * @height: frame height in pixels
+ * @interval: frame interval in seconds
+ */
+struct v4l2_subdev_frame_interval_enum {
+	__u32 index;
+	__u32 pad;
+	__u32 code;
+	__u32 width;
+	__u32 height;
+	struct v4l2_fract interval;
+	__u32 reserved[9];
+};
+
+/**
+ * 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,
+ *	    defined in v4l2-common.h; V4L2_SEL_TGT_* .
+ * @flags: constraint flags, defined in v4l2-common.h; V4L2_SEL_FLAG_*.
+ * @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 \
+			_IOWR('V', 21, struct v4l2_subdev_frame_interval)
+#define VIDIOC_SUBDEV_S_FRAME_INTERVAL \
+			_IOWR('V', 22, struct v4l2_subdev_frame_interval)
+#define VIDIOC_SUBDEV_ENUM_MBUS_CODE \
+			_IOWR('V',  2, struct v4l2_subdev_mbus_code_enum)
+#define VIDIOC_SUBDEV_ENUM_FRAME_SIZE \
+			_IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
+#define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
+			_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