CaptureNdkCameraPrivate::CaptureNdkCameraPrivate(CaptureNdkCamera *self):
self(self)
{
this->m_manager = CameraManagerPtr(ACameraManager_create(),
[] (ACameraManager *manager) {
ACameraManager_delete(manager);
});
}
NDKCamera::NDKCamera()
: cameraMgr_(nullptr),
activeCameraId_(""),
outputContainer_(nullptr),
captureSessionState_(CaptureSessionState::MAX_STATE),
cameraFacing_(ACAMERA_LENS_FACING_BACK),
cameraOrientation_(0),
exposureTime_(static_cast<int64_t>(0)) {
valid_ = false;
requests_.resize(CAPTURE_REQUEST_COUNT);
memset(requests_.data(), 0, requests_.size() * sizeof(requests_[0]));
cameras_.clear();
cameraMgr_ = ACameraManager_create();
ASSERT(cameraMgr_, "Failed to create cameraManager");
// Pick up a back-facing camera to preview
EnumerateCamera();
ASSERT(activeCameraId_.size(), "Unknown ActiveCameraIdx");
// Create back facing camera device
CALL_MGR(openCamera(cameraMgr_, activeCameraId_.c_str(), GetDeviceListener(),
&cameras_[activeCameraId_].device_));
CALL_MGR(registerAvailabilityCallback(cameraMgr_, GetManagerListener()));
// Initialize camera controls(exposure time and sensitivity), pick
// up value of 2% * range + min as starting value (just a number, no magic)
ACameraMetadata* metadataObj;
CALL_MGR(getCameraCharacteristics(cameraMgr_, activeCameraId_.c_str(),
&metadataObj));
ACameraMetadata_const_entry val = {
0,
};
camera_status_t status = ACameraMetadata_getConstEntry(
metadataObj, ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE, &val);
if (status == ACAMERA_OK) {
exposureRange_.min_ = val.data.i64[0];
if (exposureRange_.min_ < kMinExposureTime) {
exposureRange_.min_ = kMinExposureTime;
}
exposureRange_.max_ = val.data.i64[1];
if (exposureRange_.max_ > kMaxExposureTime) {
exposureRange_.max_ = kMaxExposureTime;
}
exposureTime_ = exposureRange_.value(2);
} else {
LOGW("Unsupported ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE");
exposureRange_.min_ = exposureRange_.max_ = 0l;
exposureTime_ = 0l;
}
status = ACameraMetadata_getConstEntry(
metadataObj, ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE, &val);
if (status == ACAMERA_OK){
sensitivityRange_.min_ = val.data.i32[0];
sensitivityRange_.max_ = val.data.i32[1];
sensitivity_ = sensitivityRange_.value(2);
} else {
LOGW("failed for ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE");
sensitivityRange_.min_ = sensitivityRange_.max_ = 0;
sensitivity_ = 0;
}
valid_ = true;
}
