Creating tag for the release of asterisk-1.6.0-beta1v1.6.0-beta1

git-svn-id: http://svn.digium.com/svn/asterisk/tags/1.6.0-beta1@99163 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 73 insertions, 0 deletions

diff --git a/trunk/codecs/ilbc/filter.h b/trunk/codecs/ilbc/filter.h
new file mode 100644
index 000000000..95d3b5445
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+++ b/trunk/codecs/ilbc/filter.h
@@ -0,0 +1,73 @@
+
+/******************************************************************
+
+    iLBC Speech Coder ANSI-C Source Code
+
+    filter.h
+
+    Copyright (C) The Internet Society (2004). 
+    All Rights Reserved.
+
+******************************************************************/
+
+#ifndef __iLBC_FILTER_H
+#define __iLBC_FILTER_H
+
+void AllPoleFilter(
+    float *InOut,   /* (i/o) on entrance InOut[-orderCoef] to 
+                           InOut[-1] contain the state of the 
+                           filter (delayed samples). InOut[0] to 
+                           InOut[lengthInOut-1] contain the filter 
+                           input, on en exit InOut[-orderCoef] to 
+                           InOut[-1] is unchanged and InOut[0] to 
+                           InOut[lengthInOut-1] contain filtered 
+                           samples */
+    float *Coef,/* (i) filter coefficients, Coef[0] is assumed 
+                           to be 1.0 */
+    int lengthInOut,/* (i) number of input/output samples */
+    int orderCoef   /* (i) number of filter coefficients */
+);
+
+
+
+void AllZeroFilter(
+    float *In,      /* (i) In[0] to In[lengthInOut-1] contain 
+                           filter input samples */
+    float *Coef,/* (i) filter coefficients (Coef[0] is assumed 
+                           to be 1.0) */
+    int lengthInOut,/* (i) number of input/output samples */
+    int orderCoef,  /* (i) number of filter coefficients */
+    float *Out      /* (i/o) on entrance Out[-orderCoef] to Out[-1]
+                           contain the filter state, on exit Out[0] 
+                           to Out[lengthInOut-1] contain filtered 
+                           samples */
+);
+
+void ZeroPoleFilter(
+    float *In,      /* (i) In[0] to In[lengthInOut-1] contain filter
+                           input samples In[-orderCoef] to In[-1] 
+                           contain state of all-zero section */
+    float *ZeroCoef,/* (i) filter coefficients for all-zero 
+                           section (ZeroCoef[0] is assumed to 
+                           be 1.0) */
+    float *PoleCoef,/* (i) filter coefficients for all-pole section
+                           (ZeroCoef[0] is assumed to be 1.0) */
+    int lengthInOut,/* (i) number of input/output samples */
+    int orderCoef,  /* (i) number of filter coefficients */
+    float *Out      /* (i/o) on entrance Out[-orderCoef] to Out[-1]
+                           contain state of all-pole section. On
+                           exit Out[0] to Out[lengthInOut-1] 
+                           contain filtered samples */
+);
+
+void DownSample (
+    float  *In,     /* (i) input samples */
+    float  *Coef,   /* (i) filter coefficients */
+    int lengthIn,   /* (i) number of input samples */ 
+    float  *state,  /* (i) filter state */
+    float  *Out     /* (o) downsampled output */
+);
+
+#endif
+
+