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android: Add helpers for setting android metadata from libcamera controls

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Add helpers for setting android metadata from libcamera controls.

There are two versions, for scalars and collections, both of which take
a default value to fill in the android control if the libcamera control
is not found. They both return the value that was set.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Paul Elder 2021-06-24 18:50:13 +09:00
parent 1c8140ba02
commit 6b444acf46
1 changed files with 88 additions and 0 deletions
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88
src/android/camera_capabilities.cpp
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@ -11,6 +11,7 @@
#include <array>
#include <cmath>
#include <map>
#include <type_traits>
#include <hardware/camera3.h>
@ -125,6 +126,93 @@ hwLevelStrings = {
{ ANDROID_INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL, "EXTERNAL" },
};
enum class ControlRange {
Min,
Def,
Max,
};
/**
* \brief Set Android metadata from libcamera ControlInfo or a default value
* \tparam T Type of the control in libcamera
* \tparam U Type of the metadata in Android
* \param[in] metadata Android metadata pack to add the control value to
* \param[in] tag Android metadata tag
* \param[in] controlsInfo libcamera ControlInfoMap from which to find the control info
* \param[in] control libcamera ControlId to find from \a controlsInfo
* \param[in] controlRange Whether to use the min, def, or max value from the control info
* \param[in] defaultValue The value to set in \a metadata if \a control is not found
*
* Set the Android metadata entry in \a metadata with tag \a tag based on the
* control info found for the libcamera control \a control in the libcamera
* ControlInfoMap \a controlsInfo. If no libcamera ControlInfo is found, then
* the Android metadata entry is set to \a defaultValue.
*
* This function is for scalar values.
*/
template<typename T, typename U>
U setMetadata(CameraMetadata *metadata, uint32_t tag,
const ControlInfoMap &controlsInfo, const Control<T> &control,
enum ControlRange controlRange, const U defaultValue)
{
U value = defaultValue;
const auto &info = controlsInfo.find(&control);
if (info != controlsInfo.end()) {
switch (controlRange) {
case ControlRange::Min:
value = static_cast<U>(info->second.min().template get<T>());
break;
case ControlRange::Def:
value = static_cast<U>(info->second.def().template get<T>());
break;
case ControlRange::Max:
value = static_cast<U>(info->second.max().template get<T>());
break;
}
}
metadata->addEntry(tag, value);
return value;
}
/**
* \brief Set Android metadata from libcamera ControlInfo or a default value
* \tparam T Type of the control in libcamera
* \tparam U Type of the metadata in Android
* \param[in] metadata Android metadata pack to add the control value to
* \param[in] tag Android metadata tag
* \param[in] controlsInfo libcamera ControlInfoMap from which to find the control info
* \param[in] control libcamera ControlId to find from \a controlsInfo
* \param[in] defaultVector The value to set in \a metadata if \a control is not found
*
* Set the Android metadata entry in \a metadata with tag \a tag based on the
* control info found for the libcamera control \a control in the libcamera
* ControlInfoMap \a controlsInfo. If no libcamera ControlInfo is found, then
* the Android metadata entry is set to \a defaultVector.
*
* This function is for vector values.
*/
template<typename T, typename U>
std::vector<U> setMetadata(CameraMetadata *metadata, uint32_t tag,
const ControlInfoMap &controlsInfo,
const Control<T> &control,
const std::vector<U> &defaultVector)
{
const auto &info = controlsInfo.find(&control);
if (info == controlsInfo.end()) {
metadata->addEntry(tag, defaultVector);
return defaultVector;
}
std::vector<U> values(info->second.values().size());
for (const auto &value : info->second.values())
values.push_back(static_cast<U>(value.template get<T>()));
metadata->addEntry(tag, values);
return values;
}
} /* namespace */
bool CameraCapabilities::validateManualSensorCapability()