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: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 27 insertions, 1 deletions

diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index 43a8467f0209..740ea5a9202f 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -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",
 };
 
 
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 011938fb7e0e..5c9f2116d7bf 100644
--- a/drivers/media/video/videodev.c
+++ b/drivers/media/video/videodev.c
@@ -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,