DmeTime_t::TimeAtPrevFrame

/* DmeTime_t::TimeAtPrevFrame(DmeFramerate_t) const */

undefined4 * DmeTime_t::TimeAtPrevFrame(undefined4 *param_1,DmeTime_t *param_2,ushort *param_3)

{
  longlong lVar1;
  int iVar2;
  undefined4 uVar3;
  uint uVar4;
  uint uVar5;
  ushort local_20;
  ushort local_1e;
  
  local_20 = *param_3;
  uVar4 = (uint)local_20;
  local_1e = param_3[1];
  uVar5 = (uint)local_1e;
  iVar2 = CurrentFrame(param_2,&local_20,2);
  lVar1 = (longlong)(int)uVar5 * (longlong)(iVar2 + -1);
  if (iVar2 + -1 < 0) {
    uVar5 = (uint)lVar1 - uVar4;
    lVar1 = CONCAT44(((int)((ulonglong)lVar1 >> 0x20) - (uint)((uint)lVar1 < uVar4)) +
                     (uint)(0xfffffffe < uVar5),uVar5 + 1);
  }
  uVar3 = __divdi3(lVar1,uVar4,0);
  *param_1 = uVar3;
  return param_1;
}