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biquad: Fix warning, gamma shadows global declaration

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pulsecore/filter/biquad.c: In function 'biquad_lowpass':
pulsecore/filter/biquad.c:52:10: warning: declaration of 'gamma' shadows a global declaration [-Wshadow]
pulsecore/filter/biquad.c: In function 'biquad_highpass':
pulsecore/filter/biquad.c:86:10: warning: declaration of 'gamma' shadows a global declaration [-Wshadow]

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
This commit is contained in:
Peter Meerwald 2015-05-20 17:02:13 +02:00 • committed by Peter Meerwald
parent 815c67f8d7
commit a26defed9e
1 changed files with 6 additions and 6 deletions
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12
src/pulsecore/filter/biquad.c
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@ -51,13 +51,13 @@ static void biquad_lowpass(struct biquad *bq, double cutoff)
double theta = M_PI * cutoff; double theta = M_PI * cutoff;
double sn = 0.5 * M_SQRT2 * sin(theta); double sn = 0.5 * M_SQRT2 * sin(theta);
double beta = 0.5 * (1 - sn) / (1 + sn); double beta = 0.5 * (1 - sn) / (1 + sn);
double gamma = (0.5 + beta) * cos(theta); double gamma_coeff = (0.5 + beta) * cos(theta);
double alpha = 0.25 * (0.5 + beta - gamma); double alpha = 0.25 * (0.5 + beta - gamma_coeff);
double b0 = 2 * alpha; double b0 = 2 * alpha;
double b1 = 2 * 2 * alpha; double b1 = 2 * 2 * alpha;
double b2 = 2 * alpha; double b2 = 2 * alpha;
double a1 = 2 * -gamma; double a1 = 2 * -gamma_coeff;
double a2 = 2 * beta; double a2 = 2 * beta;
set_coefficient(bq, b0, b1, b2, 1, a1, a2); set_coefficient(bq, b0, b1, b2, 1, a1, a2);
@ -83,13 +83,13 @@ static void biquad_highpass(struct biquad *bq, double cutoff)
double theta = M_PI * cutoff; double theta = M_PI * cutoff;
double sn = 0.5 * M_SQRT2 * sin(theta); double sn = 0.5 * M_SQRT2 * sin(theta);
double beta = 0.5 * (1 - sn) / (1 + sn); double beta = 0.5 * (1 - sn) / (1 + sn);
double gamma = (0.5 + beta) * cos(theta); double gamma_coeff = (0.5 + beta) * cos(theta);
double alpha = 0.25 * (0.5 + beta + gamma); double alpha = 0.25 * (0.5 + beta + gamma_coeff);
double b0 = 2 * alpha; double b0 = 2 * alpha;
double b1 = 2 * -2 * alpha; double b1 = 2 * -2 * alpha;
double b2 = 2 * alpha; double b2 = 2 * alpha;
double a1 = 2 * -gamma; double a1 = 2 * -gamma_coeff;
double a2 = 2 * beta; double a2 = 2 * beta;
set_coefficient(bq, b0, b1, b2, 1, a1, a2); set_coefficient(bq, b0, b1, b2, 1, a1, a2);