internal void CopySampleAndSampleInfo(
IntPtr sample,
IntPtr sampleInfo,
IntPtr argPtr)
{
GCHandle argHandle = GCHandle.FromIntPtr(argPtr);
SampleCopyArg <T> arg = (SampleCopyArg <T>)argHandle.Target;
//object sampleElement = arg.samples[arg.index];
//CopyOut(sample, ref sampleElement, 0);
sampleMarshaler.CopyOut(sample, ref arg.samples[arg.index]);
//arg.samples[arg.index] = sampleElement;
if (arg.sampleInfos[arg.index] == null)
{
arg.sampleInfos[arg.index] = new SampleInfo();
}
SampleInfoMarshaler.CopyOut(sampleInfo, ref arg.sampleInfos[arg.index]);
arg.index++;
argHandle.Target = arg;
}
internal ReturnCode ReaderCopy(
IntPtr sampleList,
ref T[] data,
ref SampleInfo[] sampleInfos)
{
T[] newData;
SampleInfo[] newSampleInfos;
ReturnCode result = DDS.ReturnCode.Ok;
uint length = Common.SampleList.Length(sampleList);
if (data != null && length == data.Length)
{
newData = data;
newSampleInfos = sampleInfos;
}
else
{
newData = new T[length];
newSampleInfos = new SampleInfo[length];
if (data != null)
{
for (uint i = 0; i < length && i < data.Length; i++)
{
newData[i] = data[i];
newSampleInfos[i] = sampleInfos[i];
}
}
}
if (length > 0)
{
SampleCopyArg <T> arg = new SampleCopyArg <T>();
arg.samples = newData;
arg.sampleInfos = newSampleInfos;
arg.index = 0;
GCHandle argHandle = GCHandle.Alloc(arg, GCHandleType.Normal);
result = uResultToReturnCode(User.Reader.ProtectCopyOutEnter(rlReq_UserPeer));
if (result == DDS.ReturnCode.Ok)
{
int r = Common.SampleList.Flush(sampleList, CopySampleAndSampleInfo, GCHandle.ToIntPtr(argHandle));
User.Reader.ProtectCopyOutExit(rlReq_UserPeer);
if (r < 0)
{
result = DDS.ReturnCode.AlreadyDeleted;
}
}
data = arg.samples;
sampleInfos = arg.sampleInfos;
argHandle.Free();
}
else
{
// newData and newSampleInfos have already been set to arrays with 0 elements.
data = newData;
sampleInfos = newSampleInfos;
result = DDS.ReturnCode.NoData;
}
return(result);
}
