This is v4l support for the linuxulator. This allows to access FreeBSD

native devices which support the v4l API from processes running within
the linuxulator, e.g. skype or flash can access the multimedia/pwcbsd driver.

Not tested is firmware upload, framebuffer stuff and video tuner stuff
due to lack of hardware.
The clipping part (VIDIOCSWIN) needs a little bit of further work (partly
in progress, but can not be tested due to lack of a suitable device).

The submitter tested this sucessfully with Skype and flash apps on amd64 and
i386 with the multimedia/pwcbsd driver.

Submitted by:	J.R. Oldroyd <fbsd@opal.com>

1 files changed, 34 insertions, 39 deletions

diff --git a/sys/compat/linux/linux_videodev.h b/sys/compat/linux/linux_videodev.h
index 9114009..f6606ae 100644
--- a/sys/compat/linux/linux_videodev.h
+++ b/sys/compat/linux/linux_videodev.h
@@ -1,48 +1,41 @@
+/*
+ * This header comes from linux, but it has no license. The author
+ * (Alan Cox @ Redhat) gave explicit permissions to use it in FreeBSD.
+ * The freeBSD vendor branch for v4l gives a more detailed description
+ * about this.
+ *
+ * $FreeBSD$
+ */
+
 #ifndef __LINUX_VIDEODEV_H
 #define __LINUX_VIDEODEV_H
 
-#include <linux/types.h>
+#include <sys/types.h>
+typedef int32_t __s32;
+typedef uint32_t __u32;
+typedef uint16_t __u16;
+typedef uint8_t __u8;
 
+#if 0
 #define HAVE_V4L1 1
 
 #include <linux/videodev2.h>
-
-#ifdef __KERNEL__
-
-#include <linux/mm.h>
-
-extern struct video_device* video_devdata(struct file*);
-
-#define to_video_device(cd) container_of(cd, struct video_device, class_dev)
-static inline void
-video_device_create_file(struct video_device *vfd,
-			 struct class_device_attribute *attr)
-{
-	class_device_create_file(&vfd->class_dev, attr);
-}
-static inline void
-video_device_remove_file(struct video_device *vfd,
-			 struct class_device_attribute *attr)
-{
-	class_device_remove_file(&vfd->class_dev, attr);
-}
-
-#if OBSOLETE_OWNER /* to be removed in 2.6.15 */
-/* helper functions to access driver private data. */
-static inline void *video_get_drvdata(struct video_device *dev)
-{
-	return dev->priv;
-}
-
-static inline void video_set_drvdata(struct video_device *dev, void *data)
-{
-	dev->priv = data;
-}
-#endif
-
-extern int video_exclusive_open(struct inode *inode, struct file *file);
-extern int video_exclusive_release(struct inode *inode, struct file *file);
-#endif /* __KERNEL__ */
+#endif 
+
+#define VID_TYPE_CAPTURE	1	/* Can capture */
+#define VID_TYPE_TUNER		2	/* Can tune */
+#define VID_TYPE_TELETEXT	4	/* Does teletext */
+#define VID_TYPE_OVERLAY	8	/* Overlay onto frame buffer */
+#define VID_TYPE_CHROMAKEY	16	/* Overlay by chromakey */
+#define VID_TYPE_CLIPPING	32	/* Can clip */
+#define VID_TYPE_FRAMERAM	64	/* Uses the frame buffer memory */
+#define VID_TYPE_SCALES		128	/* Scalable */
+#define VID_TYPE_MONOCHROME	256	/* Monochrome only */
+#define VID_TYPE_SUBCAPTURE	512	/* Can capture subareas of the image */
+#define VID_TYPE_MPEG_DECODER	1024	/* Can decode MPEG streams */
+#define VID_TYPE_MPEG_ENCODER	2048	/* Can encode MPEG streams */
+#define VID_TYPE_MJPEG_DECODER	4096	/* Can decode MJPEG streams */
+#define VID_TYPE_MJPEG_ENCODER	8192	/* Can encode MJPEG streams */
 
 struct video_capability
 {
@@ -157,7 +150,7 @@ struct video_window
 	__u32	width,height;		/* Its size */
 	__u32	chromakey;
 	__u32	flags;
-	struct	video_clip __user *clips;	/* Set only */
+	struct	video_clip *clips;	/* Set only */
 	int	clipcount;
 #define VIDEO_WINDOW_INTERLACE	1
 #define VIDEO_WINDOW_CHROMAKEY	16	/* Overlay by chromakey */
@@ -197,6 +190,8 @@ struct video_key
 	__u32	flags;
 };
 
+#define VIDEO_MAX_FRAME		32
+
 struct video_mbuf
 {
 	int	size;		/* Total memory to map */