UnkFunction

signed int __thiscall sub_69ABB0(_DWORD *this, unsigned __int64 a2, unsigned int a3)
{
  _DWORD *v3; // esi
  int v4; // ecx
  int v5; // eax
  int v6; // ecx
  char v7; // al
  unsigned int v8; // edi
  unsigned int v9; // ebx
  _BYTE *v10; // edi
  bool v11; // zf
  int v12; // eax
  int v13; // ecx
  unsigned __int64 v15; // [esp+10h] [ebp-14h]

  v3 = this;
  v4 = this[1];
  if ( !v4 || 8 * (*(_DWORD *)(v4 + 12) - *(_DWORD *)(v4 + 16)) == v3[2] )
  {
    if ( !v3[4] )
      return -2147467259;
    v5 = sub_69C850(v3[3]);
    if ( !v5 )
      return -2147467259;
    v6 = v3[4];
    sub_69C350(v5);
    v3[1] = *(_DWORD *)(v3[4] + 4);
  }
  v7 = a2;
  v8 = a3;
  v15 = a2;
  if ( !a3 )
    return 0;
  while ( 1 )
  {
    v9 = 8 - v3[2];
    if ( v9 > v8 )
      v9 = v8;
    if ( v3[2] )
    {
      v10 = *(_BYTE **)(v3[1] + 16);
      *v10 |= sub_B900E0(v3[2], 0);
      v8 = a3;
    }
    else
    {
      **(_BYTE **)(v3[1] + 16) = ((1 << v9) - 1) & v7;
    }
    v8 -= v9;
    v11 = (((_BYTE)v9 + (unsigned __int8)v3[2]) & 7) == 0;
    a3 = v8;
    v15 >>= *(_OWORD *)&_mm_cvtsi32_si128(v9);
    v3[2] = ((_BYTE)v9 + (unsigned __int8)v3[2]) & 7;
    if ( !v11 )
      goto LABEL_17;
    if ( ++*(_DWORD *)(v3[1] + 16) != *(_DWORD *)(v3[1] + 12) )
      goto LABEL_17;
    if ( !v3[4] )
      break;
    v12 = sub_69C850(v3[3]);
    if ( !v12 )
      return -2147467259;
    v13 = v3[4];
    sub_69C350(v12);
    v3[1] = *(_DWORD *)(v3[4] + 4);
LABEL_17:
    if ( !v8 )
      return 0;
    v7 = v15;
  }
  if ( !v8 )
    return 0;
  return -2147467259;
}