Commit b2787845 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB (5289): Add support for video output overlays. 



Add V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY support.
Also add support for local and global alpha overlays.
Add new field enums V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT.
These changes are needed to support the ivtv On Screen Display features.

Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 3bfb7398

drivers/media/video/v4l2-common.c

+4 −1
Original line number Diff line number Diff line
@@ -260,6 +260,8 @@ char *v4l2_field_names[] = { 
	[V4L2_FIELD_SEQ_TB]     = "seq-tb",

	[V4L2_FIELD_SEQ_BT]     = "seq-bt",

	[V4L2_FIELD_ALTERNATE]  = "alternate",

	[V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",

	[V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",

};



char *v4l2_type_names[] = {
@@ -269,7 +271,8 @@ char *v4l2_type_names[] = { 
	[V4L2_BUF_TYPE_VBI_CAPTURE]        = "vbi-cap",

	[V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",

	[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",

	[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "slicec-vbi-out",

	[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",

	[V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "video-out-over",

};

drivers/media/video/videodev.c

+23 −0
Original line number Diff line number Diff line
@@ -318,6 +318,7 @@ static char *v4l2_type_names_FIXME[] = { 
	[V4L2_BUF_TYPE_VBI_OUTPUT]         = "vbi-out",

	[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT]  = "sliced-vbi-out",

	[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-capture",

	[V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "video-out-over",

	[V4L2_BUF_TYPE_PRIVATE]            = "private",

};
@@ -330,6 +331,8 @@ static char *v4l2_field_names_FIXME[] = { 
	[V4L2_FIELD_SEQ_TB]     = "seq-tb",

	[V4L2_FIELD_SEQ_BT]     = "seq-bt",

	[V4L2_FIELD_ALTERNATE]  = "alternate",

	[V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",

	[V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",

};



#define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
@@ -411,6 +414,10 @@ static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type) 
		if (vfd->vidioc_try_fmt_vbi_output)

			return (0);

		break;

	case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:

		if (vfd->vidioc_try_fmt_output_overlay)

			return (0);

		break;

	case V4L2_BUF_TYPE_PRIVATE:

		if (vfd->vidioc_try_fmt_type_private)

			return (0);
@@ -525,6 +532,10 @@ static int __video_do_ioctl(struct inode *inode, struct file *file, 
				ret=vfd->vidioc_enum_fmt_vbi_output(file,

								fh, f);

			break;

		case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:

			if (vfd->vidioc_enum_fmt_output_overlay)

				ret=vfd->vidioc_enum_fmt_output_overlay(file, fh, f);

			break;

		case V4L2_BUF_TYPE_PRIVATE:

			if (vfd->vidioc_enum_fmt_type_private)

				ret=vfd->vidioc_enum_fmt_type_private(file,
@@ -582,6 +593,10 @@ static int __video_do_ioctl(struct inode *inode, struct file *file, 
				ret=vfd->vidioc_g_fmt_video_output(file,

								fh, f);

			break;

		case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:

			if (vfd->vidioc_g_fmt_output_overlay)

				ret=vfd->vidioc_g_fmt_output_overlay(file, fh, f);

			break;

		case V4L2_BUF_TYPE_VBI_OUTPUT:

			if (vfd->vidioc_g_fmt_vbi_output)

				ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
@@ -630,6 +645,10 @@ static int __video_do_ioctl(struct inode *inode, struct file *file, 
				ret=vfd->vidioc_s_fmt_video_output(file,

								fh, f);

			break;

		case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:

			if (vfd->vidioc_s_fmt_output_overlay)

				ret=vfd->vidioc_s_fmt_output_overlay(file, fh, f);

			break;

		case V4L2_BUF_TYPE_VBI_OUTPUT:

			if (vfd->vidioc_s_fmt_vbi_output)

				ret=vfd->vidioc_s_fmt_vbi_output(file,
@@ -680,6 +699,10 @@ static int __video_do_ioctl(struct inode *inode, struct file *file, 
				ret=vfd->vidioc_try_fmt_video_output(file,

								fh, f);

			break;

		case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:

			if (vfd->vidioc_try_fmt_output_overlay)

				ret=vfd->vidioc_try_fmt_output_overlay(file, fh, f);

			break;

		case V4L2_BUF_TYPE_VBI_OUTPUT:

			if (vfd->vidioc_try_fmt_vbi_output)

				ret=vfd->vidioc_try_fmt_vbi_output(file,

include/linux/videodev2.h

+44 −22
Original line number Diff line number Diff line
@@ -109,19 +109,31 @@ enum v4l2_field { 
	V4L2_FIELD_SEQ_BT        = 6, /* same as above + bottom-top order */

	V4L2_FIELD_ALTERNATE     = 7, /* both fields alternating into

					 separate buffers */

	V4L2_FIELD_INTERLACED_TB = 8, /* both fields interlaced, top field

					 first and the top field is

					 transmitted first */

	V4L2_FIELD_INTERLACED_BT = 9, /* both fields interlaced, top field

					 first and the bottom field is

					 transmitted first */

};

#define V4L2_FIELD_HAS_TOP(field)	\

	((field) == V4L2_FIELD_TOP 	||\

	 (field) == V4L2_FIELD_INTERLACED ||\

	 (field) == V4L2_FIELD_INTERLACED_TB ||\

	 (field) == V4L2_FIELD_INTERLACED_BT ||\

	 (field) == V4L2_FIELD_SEQ_TB	||\

	 (field) == V4L2_FIELD_SEQ_BT)

#define V4L2_FIELD_HAS_BOTTOM(field)	\

	((field) == V4L2_FIELD_BOTTOM 	||\

	 (field) == V4L2_FIELD_INTERLACED ||\

	 (field) == V4L2_FIELD_INTERLACED_TB ||\

	 (field) == V4L2_FIELD_INTERLACED_BT ||\

	 (field) == V4L2_FIELD_SEQ_TB	||\

	 (field) == V4L2_FIELD_SEQ_BT)

#define V4L2_FIELD_HAS_BOTH(field)	\

	((field) == V4L2_FIELD_INTERLACED ||\

	 (field) == V4L2_FIELD_INTERLACED_TB ||\

	 (field) == V4L2_FIELD_INTERLACED_BT ||\

	 (field) == V4L2_FIELD_SEQ_TB ||\

	 (field) == V4L2_FIELD_SEQ_BT)
@@ -133,6 +145,10 @@ enum v4l2_buf_type { 
	V4L2_BUF_TYPE_VBI_OUTPUT           = 5,

	V4L2_BUF_TYPE_SLICED_VBI_CAPTURE   = 6,

	V4L2_BUF_TYPE_SLICED_VBI_OUTPUT    = 7,

#if 1

	/* Experimental */

	V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY = 8,

#endif

	V4L2_BUF_TYPE_PRIVATE              = 0x80,

};
@@ -228,6 +244,7 @@ struct v4l2_capability 
#define V4L2_CAP_SLICED_VBI_OUTPUT	0x00000080  /* Is a sliced VBI output device */

#define V4L2_CAP_RDS_CAPTURE		0x00000100  /* RDS data capture */

#define V4L2_CAP_VIDEO_OUTPUT_POS       0x00000200  /* Video output can have x,y coords */

#define V4L2_CAP_VIDEO_OUTPUT_OVERLAY	0x00000400  /* Can do video output overlay */



#define V4L2_CAP_TUNER			0x00010000  /* has a tuner */

#define V4L2_CAP_AUDIO			0x00020000  /* has audio support */
@@ -599,10 +616,14 @@ struct v4l2_framebuffer 
#define V4L2_FBUF_CAP_CHROMAKEY		0x0002

#define V4L2_FBUF_CAP_LIST_CLIPPING     0x0004

#define V4L2_FBUF_CAP_BITMAP_CLIPPING	0x0008

#define V4L2_FBUF_CAP_LOCAL_ALPHA	0x0010

#define V4L2_FBUF_CAP_GLOBAL_ALPHA	0x0020

/*  Flags for the 'flags' field. */

#define V4L2_FBUF_FLAG_PRIMARY		0x0001

#define V4L2_FBUF_FLAG_OVERLAY		0x0002

#define V4L2_FBUF_FLAG_CHROMAKEY	0x0004

#define V4L2_FBUF_FLAG_LOCAL_ALPHA	0x0008

#define V4L2_FBUF_FLAG_GLOBAL_ALPHA	0x0010



struct v4l2_clip

{
@@ -618,6 +639,7 @@ struct v4l2_window 
	struct v4l2_clip	__user *clips;

	__u32			clipcount;

	void			__user *bitmap;

	__u8                    global_alpha;

};



/*

include/media/v4l2-dev.h

+8 −0
Original line number Diff line number Diff line
@@ -127,6 +127,8 @@ struct video_device 
					    struct v4l2_fmtdesc *f);

	int (*vidioc_enum_fmt_video_output)(struct file *file, void *fh,

					    struct v4l2_fmtdesc *f);

	int (*vidioc_enum_fmt_output_overlay) (struct file *file, void *fh,

					    struct v4l2_fmtdesc *f);

	int (*vidioc_enum_fmt_vbi_output)  (struct file *file, void *fh,

					    struct v4l2_fmtdesc *f);

	int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh,
@@ -145,6 +147,8 @@ struct video_device 
					struct v4l2_format *f);

	int (*vidioc_g_fmt_video_output)(struct file *file, void *fh,

					struct v4l2_format *f);

	int (*vidioc_g_fmt_output_overlay) (struct file *file, void *fh,

					struct v4l2_format *f);

	int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,

					struct v4l2_format *f);
@@ -162,6 +166,8 @@ struct video_device 
					struct v4l2_format *f);

	int (*vidioc_s_fmt_video_output)(struct file *file, void *fh,

					struct v4l2_format *f);

	int (*vidioc_s_fmt_output_overlay) (struct file *file, void *fh,

					struct v4l2_format *f);

	int (*vidioc_s_fmt_type_private)(struct file *file, void *fh,

					struct v4l2_format *f);
@@ -178,6 +184,8 @@ struct video_device 
					  struct v4l2_format *f);

	int (*vidioc_try_fmt_video_output)(struct file *file, void *fh,

					  struct v4l2_format *f);

	int (*vidioc_try_fmt_output_overlay)(struct file *file, void *fh,

					  struct v4l2_format *f);

	int (*vidioc_try_fmt_type_private)(struct file *file, void *fh,

					  struct v4l2_format *f);

CRA Git | Maintained and supported by SUSTech CRA and CCSE