diff options
Diffstat (limited to 'Alc/hrtf.c')
| -rw-r--r-- | Alc/hrtf.c | 21 |
1 files changed, 10 insertions, 11 deletions
@@ -206,26 +206,25 @@ ALuint BuildBFormatHrtf(const struct Hrtf *Hrtf, ALfloat (*coeffs)[HRIR_LENGTH][ for(c = 0;c < 8;c++) { - ALuint evidx[2]; + ALuint evidx, azidx; ALuint evoffset; - ALuint azidx[2]; ALuint azcount; - ALfloat mu; /* Calculate elevation index. */ - CalcEvIndices(Hrtf->evCount, CubePoints[c].elevation, evidx, &mu); - if(mu >= 0.5f) evidx[0] = evidx[1]; + evidx = (ALuint)floorf((F_PI_2 + CubePoints[c].elevation) * + (Hrtf->evCount-1)/F_PI + 0.5f); + evidx = minu(evidx, Hrtf->evCount-1); - azcount = Hrtf->azCount[evidx[0]]; - evoffset = Hrtf->evOffset[evidx[0]]; + azcount = Hrtf->azCount[evidx]; + evoffset = Hrtf->evOffset[evidx]; /* Calculate azimuth index for this elevation. */ - CalcAzIndices(azcount, CubePoints[c].azimuth, azidx, &mu); - if(mu >= 0.5f) azidx[0] = azidx[1]; + azidx = (ALuint)floorf((F_TAU+CubePoints[c].azimuth) * + azcount/F_TAU + 0.5f) % azcount; /* Calculate indices for left and right channels. */ - lidx[c] = evoffset + azidx[0]; - ridx[c] = evoffset + ((azcount-azidx[0]) % azcount); + lidx[c] = evoffset + azidx; + ridx[c] = evoffset + ((azcount-azidx) % azcount); min_delay = minu(min_delay, minu(Hrtf->delays[lidx[c]], Hrtf->delays[ridx[c]])); } |