Rename input_gain to b0

2 files changed, 3 insertions, 4 deletions

diff --git a/OpenAL32/Include/alFilter.h b/OpenAL32/Include/alFilter.h
index 855bb534..8012e398 100644
--- a/OpenAL32/Include/alFilter.h
+++ b/OpenAL32/Include/alFilter.h
@@ -43,8 +43,7 @@ typedef struct ALfilterState {
     ALfloat x[2]; /* History of two last input samples  */
     ALfloat y[2]; /* History of two last output samples */
     ALfloat a1, a2; /* Transfer function coefficients "a" (a0 is pre-applied) */
-    ALfloat b1, b2; /* Transfer function coefficients "b" (b0 is input_gain) */
-    ALfloat input_gain;
+    ALfloat b0, b1, b2; /* Transfer function coefficients "b" */
 
     void (*process)(struct ALfilterState *self, ALfloat *restrict dst, const ALfloat *src, ALuint numsamples);
 } ALfilterState;
@@ -83,7 +82,7 @@ inline ALfloat ALfilterState_processSingle(ALfilterState *filter, ALfloat sample
 {
     ALfloat outsmp;
 
-    outsmp = filter->input_gain * sample +
+    outsmp = filter->b0 * sample +
              filter->b1 * filter->x[0] +
              filter->b2 * filter->x[1] -
              filter->a1 * filter->y[0] -
diff --git a/OpenAL32/alFilter.c b/OpenAL32/alFilter.c
index 7b96263a..da447c27 100644
--- a/OpenAL32/alFilter.c
+++ b/OpenAL32/alFilter.c
@@ -429,9 +429,9 @@ void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat g
 
     filter->a1 = a[1] / a[0];
     filter->a2 = a[2] / a[0];
+    filter->b0 = b[0] / a[0];
     filter->b1 = b[1] / a[0];
     filter->b2 = b[2] / a[0];
-    filter->input_gain = b[0] / a[0];
 
     filter->process = ALfilterState_processC;
 }