enable_snd_device reversing

gistfile1.txt

__int64 __fastcall enable_snd_device(__int64 a1, unsigned int a2)
{
  unsigned __int64 v2; // x22
  unsigned int v3; // w20
  __int64 result; // x0
  __int64 v5; // x19
  __int64 v6; // x21
  __int64 v7; // x0
  const char *v8; // x2
  signed __int64 v9; // x21
  signed int v10; // w8
  __int64 *v11; // x8
  __int64 v12; // x10
  int v13; // [xsp+Ch] [xbp-284h]
  __int128 v14; // [xsp+10h] [xbp-280h]
  __int128 v15; // [xsp+20h] [xbp-270h]
  __int128 v16; // [xsp+30h] [xbp-260h]
  __int128 v17; // [xsp+40h] [xbp-250h]
  __int128 v18; // [xsp+50h] [xbp-240h]
  __int128 v19; // [xsp+60h] [xbp-230h]
  __int128 v20; // [xsp+70h] [xbp-220h]
  __int128 v21; // [xsp+80h] [xbp-210h]
  char v22[440]; // [xsp+90h] [xbp-200h]
  __int64 v23; // [xsp+248h] [xbp-48h]

  v2 = _ReadStatusReg(ARM64_SYSREG(3, 3, 13, 0, 2));
  v3 = a2;
  v23 = *(_QWORD *)(v2 + 40);
  v13 = 0;
  v20 = 0u;
  v21 = 0u;
  v18 = 0u;
  v19 = 0u;
  v16 = 0u;
  v17 = 0u;
  v14 = 0u;
  v15 = 0u;
  if ( a2 - 1 < 0x106 )
  {
    v5 = a1;
    LODWORD(v6) = platform_get_ref_cnt_snd_device(a2);
    ++*(_DWORD *)(*(_QWORD *)(v5 + 584) + ((signed __int64)((unsigned __int64)(unsigned int)v6 << 32) >> 30));
    if ( platform_get_snd_device_name_extn(*(_QWORD *)(v5 + 976), v3, &v14) & 0x80000000 )
    {
      __android_log_print(6LL, "audio_hw_primary", "%s: Invalid sound device returned", "enable_snd_device");
      result = 4294967274LL;
      goto LABEL_62;
    }
    v6 = (signed int)v6;
    if ( *(_DWORD *)(*(_QWORD *)(v5 + 584) + 4LL * (signed int)v6) >= 2
      && (unsigned int)platform_split_snd_device(*(_QWORD *)(v5 + 976), (unsigned int)v6, &v13, v22) )
    {
      if ( hal_log_mask )
        __android_log_print(
          3LL,
          "audio_hw_primary",
          "%s: snd_device(%d: %s) is already active",
          "enable_snd_device",
          v3,
          &v14);
      goto LABEL_59;
    }
    if ( audio_extn_spkr_prot_is_enabled() & 1 )
      audio_extn_spkr_prot_calib_cancel(v5);
    audio_extn_dsm_feedback_enable(v5, v3, 1LL);
    if ( platform_can_enable_spkr_prot_on_device(v3) & 1 && audio_extn_spkr_prot_is_enabled() & 1 )
    {
      if ( !(platform_get_spkr_prot_acdb_id(v3) & 0x80000000) )
      {
        result = audio_extn_spkr_prot_start_processing(v3);
        if ( !(_DWORD)result )
          goto LABEL_62;
        __android_log_print(6LL, "audio_hw_primary", "%s: spkr_start_processing failed", "enable_snd_device");
      }
LABEL_61:
      result = 4294967274LL;
      --*(_DWORD *)(*(_QWORD *)(v5 + 584) + 4 * v6);
      goto LABEL_62;
    }
    if ( !(unsigned int)platform_split_snd_device(*(_QWORD *)(v5 + 976), v3, &v13, v22) )
    {
      if ( v13 >= 1 )
      {
        v9 = 0LL;
        do
          enable_snd_device(v5, *(unsigned int *)&v22[4 * v9++]);
        while ( v9 < v13 );
      }
      platform_set_speaker_gain_in_combo(v5, v3, 1LL);
      goto LABEL_59;
    }
    v7 = __android_log_print(
           3LL,
           "audio_hw_primary",
           "%s: snd_device(%d: %s)[%s]",
           "enable_snd_device",
           v3,
           &v14,
           qword_A7560[v3]);
    if ( (signed int)v3 <= 156 )
    {
      if ( v3 != 39 )
      {
        if ( v3 == 40 && audio_extn_a2dp_start_playback(v7) & 0x80000000 )
        {
          v8 = " fail to configure A2dp Source control path ";
          goto LABEL_41;
        }
LABEL_31:
        audio_extn_sound_trigger_update_device_status(v3, 1LL);
        if ( platform_get_snd_device_acdb_id(v3) & 0x80000000 )
        {
          if ( v3 != 103 && v3 != 246 )
          {
            audio_extn_sound_trigger_update_device_status(v3, 0LL);
            goto LABEL_61;
          }
        }
        else
        {
          v10 = v3;
          switch ( v3 )
          {
            case 1u:
LABEL_43:
              dword_AB0B8 |= v10;
LABEL_44:
              property_set("vendor.audio.voice.receiver.status", "on");
LABEL_45:
              audio_route_apply_and_update_path(*(_QWORD *)(v5 + 640), &v14);
              audio_extn_tfa98xx_start_feedback(v5, v3);
              if ( v3 == 235 || v3 == 205 )
              {
                v11 = *(__int64 **)(v5 + 592);
                if ( v11 == (__int64 *)(v5 + 592) )
                  goto LABEL_65;
                v12 = 0LL;
                do
                {
                  if ( *((_DWORD *)v11 + 5) == 1 && v11[10] )
                    v12 = v11[10];
                  v11 = (__int64 *)*v11;
                }
                while ( v11 != (__int64 *)(v5 + 592) );
                if ( !v12 )
LABEL_65:
                  __android_log_print(3LL, "audio_hw_primary", "%s: init ec ref loopback", "enable_snd_device");
              }
              else if ( v3 == 10 && !*(_BYTE *)(v5 + 1276) && audio_is_true_native_stream_active(v5) & 1 )
              {
                __android_log_print(
                  3LL,
                  "audio_hw_primary",
                  "%s: %d: napb: enabling native mode in hardware",
                  "enable_snd_device",
                  1496LL);
                audio_route_apply_and_update_path(*(_QWORD *)(v5 + 640), "true-native-mode");
                result = 0LL;
                *(_BYTE *)(v5 + 1276) = 1;
                goto LABEL_62;
              }
LABEL_59:
              result = 0LL;
              goto LABEL_62;
            case 0x39u:
              v10 = 4;
              goto LABEL_43;
            case 0x18u:
              v10 = 2;
              goto LABEL_43;
          }
        }
        if ( !dword_AB0B8 )
          goto LABEL_45;
        goto LABEL_44;
      }
    }
    else if ( v3 - 157 >= 2 )
    {
      if ( v3 == 159 && audio_extn_a2dp_start_capture(v7) & 0x80000000 )
      {
        v8 = " fail to configure A2dp Sink control path ";
LABEL_41:
        __android_log_print(6LL, "audio_hw_primary", v8);
        goto LABEL_61;
      }
      goto LABEL_31;
    }
    if ( audio_extn_sco_start_configuration(v7) & 0x80000000 )
    {
      v8 = " fail to configure sco control path ";
      goto LABEL_41;
    }
    goto LABEL_31;
  }
  __android_log_print(6LL, "audio_hw_primary", "%s: Invalid sound device %d", "enable_snd_device", a2);
  result = 4294967274LL;
LABEL_62:
  *(_QWORD *)(v2 + 40);
  return result;
}