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libcamera: controls: Add support for byte controls

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Add support for byte values to the control framework and to the control
serializer.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Jacopo Mondi
2020-02-26 10:38:38 +01:00
committed by Laurent Pinchart
parent 8b12a161e0
commit 97cba0ebea
3 changed files with 29 additions and 3 deletions
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14
src/libcamera/controls.cpp
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@@ -53,6 +53,7 @@ namespace {
static constexpr size_t ControlValueSize[] = {
[ControlTypeNone] = 0,
[ControlTypeBool] = sizeof(bool),
[ControlTypeByte] = sizeof(uint8_t),
[ControlTypeInteger32] = sizeof(int32_t),
[ControlTypeInteger64] = sizeof(int64_t),
[ControlTypeFloat] = sizeof(float),
@@ -67,6 +68,8 @@ static constexpr size_t ControlValueSize[] = {
* Invalid type, for empty values
* \var ControlTypeBool
* The control stores a boolean value
* \var ControlTypeByte
* The control stores a byte value as an unsigned 8-bit integer
* \var ControlTypeInteger32
* The control stores a 32-bit integer value
* \var ControlTypeInteger64
@@ -198,6 +201,11 @@ std::string ControlValue::toString() const
str += *value ? "True" : "False";
break;
}
case ControlTypeByte: {
const uint8_t *value = reinterpret_cast<const uint8_t *>(data);
str += std::to_string(*value);
break;
}
case ControlTypeInteger32: {
const int32_t *value = reinterpret_cast<const int32_t *>(data);
str += std::to_string(*value);
@@ -382,9 +390,9 @@ void ControlValue::set(ControlType type, bool isArray, const void *data,
* instead of Control.
*
* Controls of any type can be defined through template specialisation, but
* libcamera only supports the bool, int32_t, int64_t and float types natively
* (this includes types that are equivalent to the supported types, such as int
* and long int).
* libcamera only supports the bool, uint8_t, int32_t, int64_t and float types
* natively (this includes types that are equivalent to the supported types,
* such as int and long int).
*
* Controls IDs shall be unique. While nothing prevents multiple instances of
* the Control class to be created with the same ID for the same object, doing