diff options
Diffstat (limited to 'include/media/v4l2-subdev.h')
| -rw-r--r-- | include/media/v4l2-subdev.h | 49 |
1 files changed, 40 insertions, 9 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index f144d49a825c..c8ac91a2cdb8 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1534,11 +1534,18 @@ int v4l2_subdev_set_routing_with_fmt(struct v4l2_subdev *sd, const struct v4l2_subdev_krouting *routing, const struct v4l2_mbus_framefmt *fmt); +/* + * A macro to generate the macro or function name for sub-devices state access + * wrapper macros below. + */ +#define __v4l2_subdev_state_gen_call(NAME, _1, ARG, ...) \ + __v4l2_subdev_state_get_ ## NAME ## ARG + /** * v4l2_subdev_state_get_format() - Get pointer to a stream format * @state: subdevice state * @pad: pad id - * @stream: stream id + * @...: stream id (optional argument) * * This returns a pointer to &struct v4l2_mbus_framefmt for the given pad + * stream in the subdev state. @@ -1546,15 +1553,29 @@ int v4l2_subdev_set_routing_with_fmt(struct v4l2_subdev *sd, * For stream-unaware drivers the format for the corresponding pad is returned. * If the pad does not exist, NULL is returned. */ +/* + * Wrap v4l2_subdev_state_get_format(), allowing the function to be called with + * two or three arguments. The purpose of the __v4l2_subdev_state_get_format() + * macro below is to come up with the name of the function or macro to call, + * using the last two arguments (_stream and _pad). The selected function or + * macro is then called using the arguments specified by the caller. A similar + * arrangement is used for v4l2_subdev_state_crop() and + * v4l2_subdev_state_compose() below. + */ +#define v4l2_subdev_state_get_format(state, pad, ...) \ + __v4l2_subdev_state_gen_call(format, ##__VA_ARGS__, , _pad) \ + (state, pad, ##__VA_ARGS__) +#define __v4l2_subdev_state_get_format_pad(state, pad) \ + __v4l2_subdev_state_get_format(state, pad, 0) struct v4l2_mbus_framefmt * -v4l2_subdev_state_get_format(struct v4l2_subdev_state *state, unsigned int pad, - u32 stream); +__v4l2_subdev_state_get_format(struct v4l2_subdev_state *state, + unsigned int pad, u32 stream); /** * v4l2_subdev_state_get_crop() - Get pointer to a stream crop rectangle * @state: subdevice state * @pad: pad id - * @stream: stream id + * @...: stream id (optional argument) * * This returns a pointer to crop rectangle for the given pad + stream in the * subdev state. @@ -1562,15 +1583,20 @@ v4l2_subdev_state_get_format(struct v4l2_subdev_state *state, unsigned int pad, * For stream-unaware drivers the crop rectangle for the corresponding pad is * returned. If the pad does not exist, NULL is returned. */ +#define v4l2_subdev_state_get_crop(state, pad, ...) \ + __v4l2_subdev_state_gen_call(crop, ##__VA_ARGS__, , _pad) \ + (state, pad, ##__VA_ARGS__) +#define __v4l2_subdev_state_get_crop_pad(state, pad) \ + __v4l2_subdev_state_get_crop(state, pad, 0) struct v4l2_rect * -v4l2_subdev_state_get_crop(struct v4l2_subdev_state *state, unsigned int pad, - u32 stream); +__v4l2_subdev_state_get_crop(struct v4l2_subdev_state *state, unsigned int pad, + u32 stream); /** * v4l2_subdev_state_get_compose() - Get pointer to a stream compose rectangle * @state: subdevice state * @pad: pad id - * @stream: stream id + * @...: stream id (optional argument) * * This returns a pointer to compose rectangle for the given pad + stream in the * subdev state. @@ -1578,9 +1604,14 @@ v4l2_subdev_state_get_crop(struct v4l2_subdev_state *state, unsigned int pad, * For stream-unaware drivers the compose rectangle for the corresponding pad is * returned. If the pad does not exist, NULL is returned. */ +#define v4l2_subdev_state_get_compose(state, pad, ...) \ + __v4l2_subdev_state_gen_call(compose, ##__VA_ARGS__, , _pad) \ + (state, pad, ##__VA_ARGS__) +#define __v4l2_subdev_state_get_compose_pad(state, pad) \ + __v4l2_subdev_state_get_compose(state, pad, 0) struct v4l2_rect * -v4l2_subdev_state_get_compose(struct v4l2_subdev_state *state, unsigned int pad, - u32 stream); +__v4l2_subdev_state_get_compose(struct v4l2_subdev_state *state, + unsigned int pad, u32 stream); /** * v4l2_subdev_routing_find_opposite_end() - Find the opposite stream |