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libcamera: Extend u16 control type

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V4L2 Controls support a wide variety of types not yet supported by the
ControlValue type system.

Extend the libcamera ControlValue types to support an explicit 16 bit
unsigned integer type, and map that to the corresponding
V4L2_CTRL_TYPE_U16 type within the v4l2_device support class.

It's used on some camera metadata that is of length 16-bits,
for example JPEG metadata headers.

Signed-off-by: Yudhistira Erlandinata <yerlandinata@chromium.org>
Co-developed-by: Harvey Yang <chenghaoyang@chromium.org>
Signed-off-by: Harvey Yang <chenghaoyang@chromium.org>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Yudhistira Erlandinata
2024-10-29 16:07:13 +00:00
committed by Kieran Bingham
parent 86902b39d7
commit d711a4c015
4 changed files with 83 additions and 0 deletions
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include/libcamera/controls.h
+7
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@@ -29,6 +29,7 @@ enum ControlType {
ControlTypeNone,
ControlTypeBool,
ControlTypeByte,
ControlTypeUnsigned16,
ControlTypeUnsigned32,
ControlTypeInteger32,
ControlTypeInteger64,
@@ -63,6 +64,12 @@ struct control_type<uint8_t> {
static constexpr std::size_t size = 0;
};
template<>
struct control_type<uint16_t> {
static constexpr ControlType value = ControlTypeUnsigned16;
static constexpr std::size_t size = 0;
};
template<>
struct control_type<uint32_t> {
static constexpr ControlType value = ControlTypeUnsigned32;