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author | Hans Verkuil <hverkuil@xs4all.nl> | 2010-12-29 10:05:02 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-22 16:37:54 -0300 |
commit | 022654930891c7ddfdb1ea34d6c4af9d1096bf91 (patch) | |
tree | 396edb9d7c4dcde4e862e89b2ed4b770ad830462 /include/media/v4l2-dev.h | |
parent | 8c1476ffc0b820f6ca8cc0b3f50c8a0f57e8d82d (diff) | |
download | linux-stable-022654930891c7ddfdb1ea34d6c4af9d1096bf91.tar.gz linux-stable-022654930891c7ddfdb1ea34d6c4af9d1096bf91.tar.bz2 linux-stable-022654930891c7ddfdb1ea34d6c4af9d1096bf91.zip |
[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.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index 51b2c515f687..9193703f4f0f 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 *); |