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authorHans Verkuil <hverkuil@xs4all.nl>2010-12-29 10:05:02 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-03-22 16:37:54 -0300
commit022654930891c7ddfdb1ea34d6c4af9d1096bf91 (patch)
tree396edb9d7c4dcde4e862e89b2ed4b770ad830462 /include/media/v4l2-dev.h
parent8c1476ffc0b820f6ca8cc0b3f50c8a0f57e8d82d (diff)
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[media] v4l2_prio: move from v4l2-common to v4l2-dev
We are going to move priority handling into the v4l2 core. As a consequence the v4l2_prio helper functions need to be moved into the core videodev module as well to prevent circular dependencies. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/v4l2-dev.h')
-rw-r--r--include/media/v4l2-dev.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 51b2c51..9193703 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -37,6 +37,21 @@ struct v4l2_ctrl_handler;
#define V4L2_FL_REGISTERED (0)
#define V4L2_FL_USES_V4L2_FH (1)
+/* Priority helper functions */
+
+struct v4l2_prio_state {
+ atomic_t prios[4];
+};
+
+void v4l2_prio_init(struct v4l2_prio_state *global);
+int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
+ enum v4l2_priority new);
+void v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
+void v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority local);
+enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
+int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority local);
+
+
struct v4l2_file_operations {
struct module *owner;
ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
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