private static IvffResult CheckBlockNext(
Stream stream,
ref IvCommonCheckWork checkWork,
ref IvCommonBlockHeader common)
{
int val2 = Math.Min(checkWork.DivideSize, checkWork.RemainSize);
checkWork.RemainSize -= val2;
++checkWork.NowCount;
int size;
for (; 0 < val2; val2 -= size)
{
size = Math.Min(16777216, val2);
byte[] bytes = new byte[size];
int readSize;
if (Ivff.IsResultError(Ivff.ReadNext(stream, bytes, size, out readSize)) || size != readSize)
{
return(IvffResult.READ_ERROR);
}
checkWork.CurSum = IvaUtils.CalcSum32(checkWork.CurSum, bytes, size);
}
if (0 < checkWork.RemainSize)
{
return(IvffResult.CONTINUE);
}
return((int)common.BlockDataSum == (int)checkWork.CurSum ? IvffResult.OK : IvffResult.INVALID);
}
public static ushort CalcSum <T>(ushort sum, ref T structure) where T : struct
{
int size = Marshal.SizeOf(typeof(T));
return((ushort)IvaUtils.CalcSum32(0U, IvaUtils.StructureToBytes <T>(ref structure), size));
}
