public bool TryGetValues(CameraMetadataTag metadataTag, List <CameraMetadataValue> outMetadataList)
{
if (m_ArCameraMetadataHandle == IntPtr.Zero)
{
// Intentionally ignored logging as the camera metadata is expected to be
// unavailable in between frames.
return(false);
}
return(m_NativeApi.CameraMetadata.TryGetValues(m_ArCameraMetadataHandle,
metadataTag, outMetadataList));
}
/// <summary>
/// Get camera image metadata value. The querying value type needs to match the returned type.
/// The type could be checked in CameraMetadata.cs.
/// </summary>
/// <param name="metadataTag">Metadata type.</param>
/// <param name="outMetadataList">Result list of the requested values.</param>
/// <returns><c>true</c> if getting metadata value successfully, otherwise <c>false</c>.</returns>
public static bool TryGetValues(CameraMetadataTag metadataTag, List <CameraMetadataValue> outMetadataList)
{
outMetadataList.Clear();
var nativeSession = LifecycleManager.Instance.NativeSession;
if (nativeSession == null)
{
return(false);
}
var metadataHandle = nativeSession.FrameApi.AcquireImageMetadata();
var isSuccess = nativeSession.CameraMetadataApi.TryGetValues(metadataHandle, metadataTag, outMetadataList);
nativeSession.CameraMetadataApi.Release(metadataHandle);
return(isSuccess);
}
public bool TryGetValues(IntPtr cameraMetadataHandle,
CameraMetadataTag tag, List <CameraMetadataValue> resultList)
{
IntPtr ndkMetadataHandle = IntPtr.Zero;
ExternApi.ArImageMetadata_getNdkCameraMetadata(m_NativeSession.SessionHandle,
cameraMetadataHandle, ref ndkMetadataHandle);
resultList.Clear();
NdkCameraMetadata entry = new NdkCameraMetadata();
NdkCameraStatus status = ExternApi.ACameraMetadata_getConstEntry(ndkMetadataHandle, tag, ref entry);
if (status != NdkCameraStatus.Ok)
{
ARDebug.LogErrorFormat("ACameraMetadata_getConstEntry error with native camera error code: {0}",
status);
return(false);
}
for (int i = 0; i < entry.Count; i++)
{
switch (entry.Type)
{
case NdkCameraMetadataType.Byte:
sbyte byteValue = (sbyte)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <sbyte>(entry.Value, i),
typeof(sbyte));
resultList.Add(new CameraMetadataValue(byteValue));
break;
case NdkCameraMetadataType.Int32:
int intValue = (int)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <int>(entry.Value, i),
typeof(int));
resultList.Add(new CameraMetadataValue(intValue));
break;
case NdkCameraMetadataType.Float:
float floatValue = (float)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <float>(entry.Value, i),
typeof(float));
resultList.Add(new CameraMetadataValue(floatValue));
break;
case NdkCameraMetadataType.Int64:
long longValue = (long)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <long>(entry.Value, i),
typeof(long));
resultList.Add(new CameraMetadataValue(longValue));
break;
case NdkCameraMetadataType.Double:
double doubleValue = (double)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <double>(entry.Value, i),
typeof(double));
resultList.Add(new CameraMetadataValue(doubleValue));
break;
case NdkCameraMetadataType.Rational:
CameraMetadataRational rationalValue = (CameraMetadataRational)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <CameraMetadataRational>(entry.Value, i),
typeof(CameraMetadataRational));
resultList.Add(new CameraMetadataValue(rationalValue));
break;
default:
return(false);
}
}
return(true);
}
public static extern NdkCameraStatus ACameraMetadata_getConstEntry(IntPtr ndkCameraMetadata,
CameraMetadataTag tag, ref NdkCameraMetadata entry);
public bool TryGetValues(IntPtr cameraMetadataHandle,
CameraMetadataTag tag, List <CameraMetadataValue> resultList)
{
resultList.Clear();
uint utag = (uint)tag;
ArCameraMetadata entry = new ArCameraMetadata();
ApiArStatus status =
ExternApi.ArImageMetadata_getConstEntry(_nativeSession.SessionHandle,
cameraMetadataHandle, utag,
ref entry);
if (status != ApiArStatus.Success)
{
ARDebug.LogErrorFormat(
"ArImageMetadata_getConstEntry error with native camera error code: {0}",
status);
return(false);
}
if (entry.Count > _maximumTagCountForWarning && !_warningTags.Contains((int)tag))
{
Debug.LogWarningFormat(
"TryGetValues for tag {0} has {1} values. Accessing tags with a large " +
"number of values may impede performance.", tag, entry.Count);
_warningTags.Add((int)tag);
}
for (int i = 0; i < entry.Count; i++)
{
switch (entry.Type)
{
case ArCameraMetadataType.Byte:
sbyte byteValue = (sbyte)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <sbyte>(entry.Value, i),
typeof(sbyte));
resultList.Add(new CameraMetadataValue(byteValue));
break;
case ArCameraMetadataType.Int32:
int intValue = (int)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <int>(entry.Value, i),
typeof(int));
resultList.Add(new CameraMetadataValue(intValue));
break;
case ArCameraMetadataType.Float:
float floatValue = (float)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <float>(entry.Value, i),
typeof(float));
resultList.Add(new CameraMetadataValue(floatValue));
break;
case ArCameraMetadataType.Int64:
long longValue = (long)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <long>(entry.Value, i),
typeof(long));
resultList.Add(new CameraMetadataValue(longValue));
break;
case ArCameraMetadataType.Double:
double doubleValue = (double)Marshal.PtrToStructure(
MarshalingHelper.GetPtrToUnmanagedArrayElement <double>(entry.Value, i),
typeof(double));
resultList.Add(new CameraMetadataValue(doubleValue));
break;
case ArCameraMetadataType.Rational:
CameraMetadataRational rationalValue =
(CameraMetadataRational)Marshal.PtrToStructure(
MarshalingHelper
.GetPtrToUnmanagedArrayElement <CameraMetadataRational>(
entry.Value, i),
typeof(CameraMetadataRational));
resultList.Add(new CameraMetadataValue(rationalValue));
break;
default:
return(false);
}
}
return(true);
}
/// <summary>
/// Get camera image metadata value. The querying value type needs to match the returned type.
/// The type could be checked in CameraMetadata.cs.
/// </summary>
/// <param name="metadataTag">Metadata type.</param>
/// <param name="outMetadataList">Result list of the requested values.</param>
/// <returns><c>true</c> if getting metadata value successfully, otherwise <c>false</c>.</returns>
public static bool TryGetValues(CameraMetadataTag metadataTag,
List <CameraMetadataValue> outMetadataList)
{
return(Frame.s_FrameManager.CameraMetadataManager.TryGetValues(metadataTag, outMetadataList));
}
