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libcamera: controls: Use std::optional to handle invalid control values

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Previously, ControlList::get<T>() would use default constructed objects to
indicate that a ControlList does not have the requested Control. This has
several disadvantages: 1) It requires types to be default constructible,
2) it does not differentiate between a default constructed object and an
object that happens to have the same state as a default constructed object.

std::optional<T> additionally stores the information if the object is valid
or not, and therefore is more expressive than a default constructed object.

Signed-off-by: Christian Rauch <Rauch.Christian@gmx.de>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Christian Rauch 2022-07-05 10:55:48 +01:00 • committed by Laurent Pinchart
parent ef77e26379
commit 1c4d480185
10 changed files with 44 additions and 44 deletions
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21
src/android/camera_device.cpp
View file

@ -306,7 +306,7 @@ int CameraDevice::initialize(const CameraConfigData *cameraConfigData)
const ControlList &properties = camera_->properties();
if (properties.contains(properties::Location)) {
int32_t location = properties.get(properties::Location);
int32_t location = *properties.get(properties::Location);
switch (location) {
case properties::CameraLocationFront:
facing_ = CAMERA_FACING_FRONT;
@ -356,7 +356,7 @@ int CameraDevice::initialize(const CameraConfigData *cameraConfigData)
* metadata.
*/
if (properties.contains(properties::Rotation)) {
int rotation = properties.get(properties::Rotation);
int rotation = *properties.get(properties::Rotation);
orientation_ = (360 - rotation) % 360;
if (cameraConfigData && cameraConfigData->rotation != -1 &&
orientation_ != cameraConfigData->rotation) {
@ -1181,7 +1181,8 @@ void CameraDevice::requestComplete(Request *request)
* as soon as possible, earlier than request completion time.
*/
uint64_t sensorTimestamp = static_cast<uint64_t>(request->metadata()
.get(controls::SensorTimestamp));
.get(controls::SensorTimestamp)
.value_or(0));
notifyShutter(descriptor->frameNumber_, sensorTimestamp);
LOG(HAL, Debug) << "Request " << request->cookie() << " completed with "
@ -1560,29 +1561,28 @@ CameraDevice::getResultMetadata(const Camera3RequestDescriptor &descriptor) cons
rolling_shutter_skew);
/* Add metadata tags reported by libcamera. */
const int64_t timestamp = metadata.get(controls::SensorTimestamp);
const int64_t timestamp = metadata.get(controls::SensorTimestamp).value_or(0);
resultMetadata->addEntry(ANDROID_SENSOR_TIMESTAMP, timestamp);
if (metadata.contains(controls::draft::PipelineDepth)) {
uint8_t pipeline_depth =
metadata.get<int32_t>(controls::draft::PipelineDepth);
uint8_t pipeline_depth = *metadata.get<int32_t>(controls::draft::PipelineDepth);
resultMetadata->addEntry(ANDROID_REQUEST_PIPELINE_DEPTH,
pipeline_depth);
}
if (metadata.contains(controls::ExposureTime)) {
int64_t exposure = metadata.get(controls::ExposureTime) * 1000ULL;
int64_t exposure = *metadata.get(controls::ExposureTime) * 1000ULL;
resultMetadata->addEntry(ANDROID_SENSOR_EXPOSURE_TIME, exposure);
}
if (metadata.contains(controls::FrameDuration)) {
int64_t duration = metadata.get(controls::FrameDuration) * 1000;
int64_t duration = *metadata.get(controls::FrameDuration) * 1000;
resultMetadata->addEntry(ANDROID_SENSOR_FRAME_DURATION,
duration);
}
if (metadata.contains(controls::ScalerCrop)) {
Rectangle crop = metadata.get(controls::ScalerCrop);
Rectangle crop = *metadata.get(controls::ScalerCrop);
int32_t cropRect[] = {
crop.x, crop.y, static_cast<int32_t>(crop.width),
static_cast<int32_t>(crop.height),
@ -1591,8 +1591,7 @@ CameraDevice::getResultMetadata(const Camera3RequestDescriptor &descriptor) cons
}
if (metadata.contains(controls::draft::TestPatternMode)) {
const int32_t testPatternMode =
metadata.get(controls::draft::TestPatternMode);
const int32_t testPatternMode = *metadata.get(controls::draft::TestPatternMode);
resultMetadata->addEntry(ANDROID_SENSOR_TEST_PATTERN_MODE,
testPatternMode);
}