Avoid storing some chorus and flanger properties in the effect state

1 files changed, 17 insertions, 35 deletions

diff --git a/Alc/alcChorus.c b/Alc/alcChorus.c
index 5b62c910..eb89dd8e 100644
--- a/Alc/alcChorus.c
+++ b/Alc/alcChorus.c
@@ -45,8 +45,6 @@ typedef struct ALchorusState {
 
     /* effect parameters */
     ALint waveform;
-    ALint phase;
-    ALfloat rate;
     ALfloat depth;
     ALfloat feedback;
     ALfloat delay;
@@ -82,17 +80,11 @@ static ALboolean ChorusDeviceUpdate(ALeffectState *effect, ALCdevice *Device)
         void *temp;
 
         temp = realloc(state->SampleBufferLeft, maxlen * sizeof(ALfloat));
-        if (!temp)
-        {
-            return AL_FALSE;
-        }
+        if(!temp) return AL_FALSE;
         state->SampleBufferLeft = temp;
 
         temp = realloc(state->SampleBufferRight, maxlen * sizeof(ALfloat));
-        if (!temp)
-        {
-            return AL_FALSE;
-        }
+        if(!temp) return AL_FALSE;
         state->SampleBufferRight = temp;
 
         state->BufferLength = maxlen;
@@ -112,6 +104,8 @@ static ALboolean ChorusDeviceUpdate(ALeffectState *effect, ALCdevice *Device)
 static ALvoid ChorusUpdate(ALeffectState *effect, ALCdevice *Device, const ALeffectslot *Slot)
 {
     ALchorusState *state = GET_PARENT_TYPE(ALchorusState, ALeffectState, effect);
+    ALfloat rate;
+    ALint phase;
     ALuint it;
 
     for (it = 0; it < MaxChannels; it++)
@@ -121,8 +115,6 @@ static ALvoid ChorusUpdate(ALeffectState *effect, ALCdevice *Device, const ALeff
     }
 
     state->waveform = Slot->effect.Chorus.Waveform;
-    state->phase = Slot->effect.Chorus.Phase;
-    state->rate = Slot->effect.Chorus.Rate;
     state->depth = Slot->effect.Chorus.Depth;
     state->feedback = Slot->effect.Chorus.Feedback;
     state->delay = Slot->effect.Chorus.Delay;
@@ -132,41 +124,31 @@ static ALvoid ChorusUpdate(ALeffectState *effect, ALCdevice *Device, const ALeff
     ComputeAngleGains(Device, atan2f(-1.0f, 0.0f), 0.0f, Slot->Gain, state->Gain[0]);
     ComputeAngleGains(Device, atan2f(+1.0f, 0.0f), 0.0f, Slot->Gain, state->Gain[1]);
 
+    phase = Slot->effect.Chorus.Phase;
+    rate = Slot->effect.Chorus.Rate;
+
     /* Calculate LFO coefficient */
     switch (state->waveform)
     {
         case AL_CHORUS_WAVEFORM_TRIANGLE:
-             if (state->rate == 0.0f)
-             {
+             if(rate == 0.0f)
                  state->lfo_coeff = 0.0f;
-             }
              else
-             {
-                 state->lfo_coeff = 1.0f / ((ALfloat)Device->Frequency / state->rate);
-             }
+                 state->lfo_coeff = 1.0f / (state->frequency / rate);
              break;
         case AL_CHORUS_WAVEFORM_SINUSOID:
-             if (state->rate == 0.0f)
-             {
+             if(rate == 0.0f)
                  state->lfo_coeff = 0.0f;
-             }
              else
-             {
-                 state->lfo_coeff = F_PI * 2.0f / ((ALfloat)Device->Frequency / state->rate);
-             }
+                 state->lfo_coeff = F_PI*2.0f / (state->frequency / rate);
              break;
     }
 
     /* Calculate lfo phase displacement */
-    if ((state->phase == 0) || (state->rate == 0.0f))
-    {
+    if(phase == 0 || rate == 0.0f)
         state->lfo_disp = 0;
-    }
     else
-    {
-        state->lfo_disp = (ALint) ((ALfloat)Device->Frequency /
-                          state->rate / (360.0f / (ALfloat)state->phase));
-    }
+        state->lfo_disp = fastf2i(state->frequency / rate / (360.0f/phase));
 }
 
 static __inline void Triangle(ALint *delay_left, ALint *delay_right, ALint offset, const ALchorusState *state)
@@ -176,14 +158,14 @@ static __inline void Triangle(ALint *delay_left, ALint *delay_right, ALint offse
     lfo_value = 2.0f - fabsf(2.0f - fmodf(state->lfo_coeff*offset*4.0f, 4.0f));
     lfo_value *= state->depth * state->delay;
     lfo_value += state->delay;
-    *delay_left = (ALint)(lfo_value * state->frequency);
+    *delay_left = fastf2i(lfo_value * state->frequency);
 
     lfo_value = 2.0f - fabsf(2.0f - fmodf(state->lfo_coeff *
                                           (offset+state->lfo_disp)*4.0f,
                                           4.0f));
     lfo_value *= state->depth * state->delay;
     lfo_value += state->delay;
-    *delay_right = (ALint)(lfo_value * state->frequency);
+    *delay_right = fastf2i(lfo_value * state->frequency);
 }
 
 static __inline void Sinusoid(ALint *delay_left, ALint *delay_right, ALint offset, const ALchorusState *state)
@@ -193,13 +175,13 @@ static __inline void Sinusoid(ALint *delay_left, ALint *delay_right, ALint offse
     lfo_value = 1.0f + sinf(fmodf(state->lfo_coeff*offset, 2.0f*F_PI));
     lfo_value *= state->depth * state->delay;
     lfo_value += state->delay;
-    *delay_left = (ALint)(lfo_value * state->frequency);
+    *delay_left = fastf2i(lfo_value * state->frequency);
 
     lfo_value = 1.0f + sinf(fmodf(state->lfo_coeff*(offset+state->lfo_disp),
                                   2.0f*F_PI));
     lfo_value *= state->depth * state->delay;
     lfo_value += state->delay;
-    *delay_right = (ALint)(lfo_value * state->frequency);
+    *delay_right = fastf2i(lfo_value * state->frequency);
 }
 
 #define DECL_TEMPLATE(func)                                                    \