diff options
Diffstat (limited to 'Alc/hrtf.c')
| -rw-r--r-- | Alc/hrtf.c | 13 |
1 files changed, 7 insertions, 6 deletions
@@ -313,7 +313,7 @@ ALuint GetMovingHrtfCoeffs(const struct Hrtf *Hrtf, ALfloat elevation, ALfloat a /* Calculates HRTF coefficients for a B-Format channel (first order only). */ -void GetBFormatHrtfCoeffs(const struct Hrtf *Hrtf, const ALfloat ambi_coeffs[4], ALfloat (*coeffs)[2], ALuint *delays) +void GetBFormatHrtfCoeffs(const struct Hrtf *Hrtf, const ALuint chan_num, ALfloat (*coeffs)[2], ALuint *delays) { ALuint elev_idx, azi_idx; ALfloat scale; @@ -345,6 +345,7 @@ void GetBFormatHrtfCoeffs(const struct Hrtf *Hrtf, const ALfloat ambi_coeffs[4], { ALuint lidx, ridx; ALfloat az; + ALfloat ambi_coeffs[4]; ALfloat x, y, z; ALfloat gain; @@ -363,12 +364,12 @@ void GetBFormatHrtfCoeffs(const struct Hrtf *Hrtf, const ALfloat ambi_coeffs[4], y = sinf(-az) * cosf(elev); z = sinf(elev); - gain = 0.0f; - gain += ambi_coeffs[0]*0.7071f; /* sqrt(1.0 / 2.0) */ - gain += ambi_coeffs[1]*x; /* X */ - gain += ambi_coeffs[2]*y; /* Y */ - gain += ambi_coeffs[3]*z; /* Z */ + ambi_coeffs[0] = 0.7071f; /* sqrt(1.0 / 2.0) */ + ambi_coeffs[1] = x; /* X */ + ambi_coeffs[2] = y; /* Y */ + ambi_coeffs[3] = z; /* Z */ + gain = ambi_coeffs[chan_num]; if(!(fabsf(gain) > GAIN_SILENCE_THRESHOLD)) continue; |