Use click removal when starting a source

2 files changed, 38 insertions, 5 deletions

diff --git a/OpenAL32/Include/alFilter.h b/OpenAL32/Include/alFilter.h
index 9f420d35..ef852d13 100644
--- a/OpenAL32/Include/alFilter.h
+++ b/OpenAL32/Include/alFilter.h
@@ -61,6 +61,43 @@ static __inline ALfloat lpFilter1P(FILTER *iir, ALuint offset, ALfloat input)
     return output;
 }
 
+static __inline ALfloat lpFilter4PC(const FILTER *iir, ALuint offset, ALfloat input)
+{
+    const ALfloat *history = &iir->history[offset];
+    ALfloat a = iir->coeff;
+    ALfloat output = input;
+
+    output = output + (history[0]-output)*a;
+    output = output + (history[1]-output)*a;
+    output = output + (history[2]-output)*a;
+    output = output + (history[3]-output)*a;
+
+    return output;
+}
+
+static __inline ALfloat lpFilter2PC(const FILTER *iir, ALuint offset, ALfloat input)
+{
+    const ALfloat *history = &iir->history[offset];
+    ALfloat a = iir->coeff;
+    ALfloat output = input;
+
+    output = output + (history[0]-output)*a;
+    output = output + (history[1]-output)*a;
+
+    return output;
+}
+
+static __inline ALfloat lpFilter1PC(FILTER *iir, ALuint offset, ALfloat input)
+{
+    const ALfloat *history = &iir->history[offset];
+    ALfloat a = iir->coeff;
+    ALfloat output = input;
+
+    output = output + (history[0]-output)*a;
+
+    return output;
+}
+
 /* Calculates the low-pass filter coefficient given the pre-scaled gain and
  * cos(w) value. Note that g should be pre-scaled (sqr(gain) for one-pole,
  * sqrt(gain) for four-pole, etc) */
diff --git a/OpenAL32/alSource.c b/OpenAL32/alSource.c
index 1e320e19..5435e5d0 100644
--- a/OpenAL32/alSource.c
+++ b/OpenAL32/alSource.c
@@ -1366,11 +1366,7 @@ AL_API ALvoid AL_APIENTRY alSourcePlayv(ALsizei n, const ALuint *sources)
         if(Source->lOffset)
             ApplyOffset(Source);
 
-        if(Source->BuffersPlayed == 0 && Source->position == 0 &&
-           Source->position_fraction == 0)
-            Source->FirstStart = AL_TRUE;
-        else
-            Source->FirstStart = AL_FALSE;
+        Source->FirstStart = AL_TRUE;
 
         // If device is disconnected, go right to stopped
         if(!Context->Device->Connected)