Hi,
Laurent Pinchart wrote:
...
> diff --git a/include/linux/media.h b/include/linux/media.h
> new file mode 100644
> index 0000000..746bdda
> --- /dev/null
> +++ b/include/linux/media.h
> @@ -0,0 +1,73 @@
> +#ifndef __LINUX_MEDIA_H
> +#define __LINUX_MEDIA_H
> +
> +#define MEDIA_ENTITY_TYPE_NODE 1
> +#define MEDIA_ENTITY_TYPE_SUBDEV 2
> +
> +#define MEDIA_ENTITY_SUBTYPE_NODE_V4L 1
> +#define MEDIA_ENTITY_SUBTYPE_NODE_FB 2
> +#define MEDIA_ENTITY_SUBTYPE_NODE_ALSA 3
> +#define MEDIA_ENTITY_SUBTYPE_NODE_DVB 4
> +
> +#define MEDIA_ENTITY_SUBTYPE_SUBDEV_VID_DECODER 1
> +#define MEDIA_ENTITY_SUBTYPE_SUBDEV_VID_ENCODER 2
> +#define MEDIA_ENTITY_SUBTYPE_SUBDEV_MISC 3
> +
> +#define MEDIA_PAD_DIR_INPUT 1
> +#define MEDIA_PAD_DIR_OUTPUT 2
> +
> +#define MEDIA_LINK_FLAG_ACTIVE (1 << 0)
> +#define MEDIA_LINK_FLAG_IMMUTABLE (1 << 1)
> +
> +#define MEDIA_ENTITY_ID_FLAG_NEXT (1 << 31)
> +
> +struct media_user_pad {
> + __u32 entity; /* entity ID */
> + __u8 index; /* pad index */
> + __u32 direction; /* pad direction */
> +};
Another small comment, I think you mentioned it yourself some time back
:-): how about some reserved fields to these structures?
> +struct media_user_entity {
> + __u32 id;
> + char name[32];
> + __u32 type;
> + __u32 subtype;
> + __u8 pads;
> + __u32 links;
> +
> + union {
> + /* Node specifications */
> + struct {
> + __u32 major;
> + __u32 minor;
> + } v4l;
> + struct {
> + __u32 major;
> + __u32 minor;
> + } fb;
> + int alsa;
> + int dvb;
> +
> + /* Sub-device specifications */
> + /* Nothing needed yet */
> + };
> +};
> +
> +struct media_user_link {
> + struct media_user_pad source;
> + struct media_user_pad sink;
> + __u32 flags;
> +};
> +
> +struct media_user_links {
> + __u32 entity;
> + /* Should have enough room for pads elements */
> + struct media_user_pad __user *pads;
> + /* Should have enough room for links elements */
> + struct media_user_link __user *links;
> +};
Cheers,
--
Sakari Ailus
sakari.ai...@maxwell.research.nokia.com
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