/**
* \if english
* @brief Get a camera metadata of input tag.
* @param cameraMetadataTag A camera metadata tag.
* @return A list of camera metadata values.
* \else
* @brief 根据元数据的tag获取元数据值。
* @param cameraMetadataTag 元数据tag。
* @return 元数据tag对应的值。
* \endif
*/
public List <ARCameraMetadataValue> GetValue(ARCameraMetadataTag cameraMetadataTag)
{
List <ARCameraMetadataValue> metadataValues = new List <ARCameraMetadataValue>();
m_ndkSession.CameraMetadataAdapter.GetValues(m_metadataPtr, cameraMetadataTag, metadataValues);
return(metadataValues);
}
public void GetValues(IntPtr cameraMetadataHandle,
ARCameraMetadataTag tag, List <ARCameraMetadataValue> resultList)
{
IntPtr ndkMetadataHandle = IntPtr.Zero;
NDKAPI.HwArImageMetadata_getNdkCameraMetadata(m_ndkSession.SessionHandle,
cameraMetadataHandle, ref ndkMetadataHandle);
resultList.Clear();
NdkCameraMetadata entry = new NdkCameraMetadata();
NdkCameraStatus status = NDKAPI.ACameraMetadata_getConstEntry(ndkMetadataHandle, tag, ref entry);
if (status != NdkCameraStatus.Ok)
{
ARDebug.LogError("ACameraMetadata_getConstEntry error with native camera error code: {0}",
status);
return;
}
for (int i = 0; i < entry.Count; i++)
{
switch (entry.Type)
{
case NdkCameraMetadataType.Byte:
sbyte byteValue = MarshalingHelper.GetValueOfUnmanagedArrayElement <sbyte>(entry.Value, i);
resultList.Add(new ARCameraMetadataValue(byteValue));
break;
case NdkCameraMetadataType.Int32:
int intValue = MarshalingHelper.GetValueOfUnmanagedArrayElement <int>(entry.Value, i);
resultList.Add(new ARCameraMetadataValue(intValue));
break;
case NdkCameraMetadataType.Float:
float floatValue = MarshalingHelper.GetValueOfUnmanagedArrayElement <float>(entry.Value, i);
resultList.Add(new ARCameraMetadataValue(floatValue));
break;
case NdkCameraMetadataType.Int64:
long longValue = MarshalingHelper.GetValueOfUnmanagedArrayElement <long>(entry.Value, i);
resultList.Add(new ARCameraMetadataValue(longValue));
break;
case NdkCameraMetadataType.Double:
double doubleValue = MarshalingHelper.GetValueOfUnmanagedArrayElement <double>(entry.Value, i);
resultList.Add(new ARCameraMetadataValue(doubleValue));
break;
case NdkCameraMetadataType.Rational:
ARCameraMetadataRational rationalValue = MarshalingHelper.GetValueOfUnmanagedArrayElement <
ARCameraMetadataRational>(entry.Value, i);
resultList.Add(new ARCameraMetadataValue(rationalValue));
break;
default:
return;
}
}
}
public static extern NdkCameraStatus ACameraMetadata_getConstEntry(IntPtr ndkCameraMetadata,
ARCameraMetadataTag tag, ref NdkCameraMetadata entry);
