// 
// Biquad_Filter from 0x105eb8 to 0x105fc0 (264 bytes)
// 
// 5 xrefs:
// > Pole_Zero_Filter_Phase @ 0x105eb4
// > .Biquad_Filter @ 0x109e9c
// > <???> @ 0x6280
// > .Biquad_Filter @ 0x109e94
// > <???> @ 0x111810
// 
// This function is hookable on this platform!
// 
// Using BromaIDA 8.0.0 @ https://github.com/Stazzical/BromaIDA
// Using bindings at commit ba9f177b at Thu Jul 16 22:52:06 2026 from https://github.com/geode-sdk/bindings
// 

__int64 __fastcall Biquad_Filter(
        float *a1,
        __int16 a2,
        _DWORD *a3,
        __int16 a4,
        __int64 a5,
        float *a6,
        __int16 a7,
        double a8,
        double a9,
        double a10,
        double a11,
        double a12,
        double a13,
        double a14,
        double a15)
{
  float v15; // s17
  float v16; // s18
  float v17; // s19
  float v18; // s5
  float v19; // s3
  float v20; // s16
  unsigned int v21; // w4
  float v22; // s7
  __int64 v23; // x8
  __int64 v24; // x7
  __int64 v25; // x1
  __int64 v26; // x3
  float v27; // s1
  float v28; // s2
  float v29; // s1
  __int64 v31; // x0
  __int128 v32; // [xsp+10h] [xbp+10h]

  *(float *)&a9 = a6[1];
  *(float *)&a8 = *a6;
  *(float *)&a12 = a6[3];
  *(float *)&a14 = a6[2];
  LODWORD(a15) = *(_DWORD *)a5;
  v15 = *(float *)(a5 + 8);
  v16 = *(float *)(a5 + 12);
  v17 = *(float *)(a5 + 16);
  if ( (a7 & 1) != 0 )
  {
    v31 = __assert2(
            "../../src/pl2_encode_subroutine.c",
            1881,
            "Biquad_Filter",
            "0 == dspsBlockSize % 2",
            a8,
            a9,
            a10,
            a11,
            a12,
            a13,
            a14,
            a15);
    return PLII_Encode(v31);
  }
  else
  {
    v18 = a6[2];
    v19 = a6[3];
    if ( a7 )
    {
      v20 = -*(float *)(a5 + 4);
      v21 = a7 & 1;
      v22 = -*(float *)&a15;
      v23 = a2;
      v24 = a4;
      v25 = 8LL * a2;
      v26 = 8LL * a4;
      do
      {
        v21 += 2;
        v18 = a1[v23];
        v19 = *a1;
        a1 = (float *)((char *)a1 + v25);
        v27 = (float)(*(float *)&a12 * v17) + (float)(*(float *)&a9 * v20);
        v28 = (float)(*(float *)&a14 * v17) + (float)(*(float *)&a8 * v20);
        *(float *)&a12 = v19;
        v29 = (float)(v27 + (float)(*(float *)&a8 * v22)) + (float)(*(float *)&a14 * v16);
        *(float *)&a14 = v18;
        *(float *)&a9 = v29 + (float)(v19 * v15);
        *(float *)&a8 = (float)((float)(v28 + (float)(v18 * v15)) + (float)(v19 * v16)) + (float)(*(float *)&a9 * v22);
        *a3 = LODWORD(a9);
        a3[v24] = LODWORD(a8);
        a3 = (_DWORD *)((char *)a3 + v26);
      }
      while ( v21 < a7 );
    }
    *(_QWORD *)&v32 = __PAIR64__(LODWORD(a9), LODWORD(a8));
    *((_QWORD *)&v32 + 1) = __PAIR64__(LODWORD(v19), LODWORD(v18));
    *(_OWORD *)a6 = v32;
    return 0;
  }
}