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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2009-02-13 10:57:48 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 12:42:46 -0300 |
| commit | 2ba588942c45a03a29a7a097e62bf0beceddb0e8 (patch) | |
| tree | 8bb6dbc96fcf2f6b68cd933626b9d7b60fe318f0 /include/media | |
| parent | 1b6f1d9603a46a73ceed8daf7a3285559727fec3 (diff) | |
| download | lwn-2ba588942c45a03a29a7a097e62bf0beceddb0e8.tar.gz lwn-2ba588942c45a03a29a7a097e62bf0beceddb0e8.zip | |
V4L/DVB (10544): v4l2-common: add comments warning that about the sort order
Control arrays as are used with v4l2_ctrl_next must be sorted from
low to high. Add a comment at the top of all such arrays to warn
about this.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-common.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 1637cc302697..de785da4564c 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -107,6 +107,11 @@ int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, struct v4l2_queryctrl *qctrl, const char **menu_items); #define V4L2_CTRL_MENU_IDS_END (0xffffffff) int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids); + +/* Note: ctrl_classes points to an array of u32 pointers. Each u32 array is a + 0-terminated array of control IDs. Each array must be sorted low to high + and belong to the same control class. The array of u32 pointers must also + be sorted, from low class IDs to high class IDs. */ u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id); /* ------------------------------------------------------------------------- */ |