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libcamera: controls: Add support for querying direction information

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Add support to ControlId for querying direction information. This allows
applications to query whether a ControlId is meant for being set in
controls or to be returned in metadata or both. This also has a side
effect of properly encoding this information, as previously it was only
mentioned losely and inconsistently in the control id definition.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Paul Elder 2024-11-26 00:16:56 +09:00
parent 39fe4ad968
commit 34d7b4776b
7 changed files with 95 additions and 10 deletions
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20
include/libcamera/controls.h
View file

@ -17,6 +17,7 @@
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/flags.h>
#include <libcamera/base/span.h>
#include <libcamera/geometry.h>
@ -249,14 +250,25 @@ private:
class ControlId
{
public:
enum class Direction {
In = (1 << 0),
Out = (1 << 1),
};
using DirectionFlags = Flags<Direction>;
ControlId(unsigned int id, const std::string &name, const std::string &vendor,
ControlType type, std::size_t size = 0,
ControlType type, DirectionFlags direction,
std::size_t size = 0,
const std::map<std::string, int32_t> &enumStrMap = {});
unsigned int id() const { return id_; }
const std::string &name() const { return name_; }
const std::string &vendor() const { return vendor_; }
ControlType type() const { return type_; }
DirectionFlags direction() const { return direction_; }
bool isInput() const { return !!(direction_ & Direction::In); }
bool isOutput() const { return !!(direction_ & Direction::Out); }
bool isArray() const { return size_ > 0; }
std::size_t size() const { return size_; }
const std::map<int32_t, std::string> &enumerators() const { return reverseMap_; }
@ -268,11 +280,14 @@ private:
std::string name_;
std::string vendor_;
ControlType type_;
DirectionFlags direction_;
std::size_t size_;
std::map<std::string, int32_t> enumStrMap_;
std::map<int32_t, std::string> reverseMap_;
};
LIBCAMERA_FLAGS_ENABLE_OPERATORS(ControlId::Direction)
static inline bool operator==(unsigned int lhs, const ControlId &rhs)
{
return lhs == rhs.id();
@ -300,9 +315,10 @@ public:
using type = T;
Control(unsigned int id, const char *name, const char *vendor,
ControlId::DirectionFlags direction,
const std::map<std::string, int32_t> &enumStrMap = {})
: ControlId(id, name, vendor, details::control_type<std::remove_cv_t<T>>::value,
details::control_type<std::remove_cv_t<T>>::size, enumStrMap)
direction, details::control_type<std::remove_cv_t<T>>::size, enumStrMap)
{
}

3
include/libcamera/ipa/ipa_controls.h
View file

@ -46,7 +46,8 @@ struct ipa_control_info_entry {
uint32_t id;
uint32_t type;
uint32_t offset;
uint32_t padding[1];
uint8_t direction;
uint8_t padding[3];
};
#ifdef __cplusplus