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V4L/DVB (10544): v4l2-common: add comments warning that about the sort order

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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>
This commit is contained in:
Hans Verkuil
2009-02-13 10:57:48 -03:00
committed by Mauro Carvalho Chehab
parent 1b6f1d9603
commit 2ba588942c
8 changed files with 13 additions and 1 deletions
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5
include/media/v4l2-common.h
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@@ -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);
/* ------------------------------------------------------------------------- */