First submission of audio effect library from NXP software.

This CL contains the first open sourceable version of the audio effect library from NXP software.
The effects implemented are:
- Bass boost
- Virtualizer (stereo widening)
- Equalizer
- Spectrum analyzer

Source file for the effect engines are located under libeffects/lvm/lib
The wrapper implementing the interface with the audio effect framework in under libeffects/lvm/wrapper

The code of other effect libraries has also been reorganized fo clarity:
- the effect factory is now under libeffects/factory
- the test equalizer and reverb effects are under libeffect/testlibs
- the visualizer is under libeffects/virtualizer

Change-Id: I8d91e2181f81b89f8fc0c1e1e6bf552c5809b2eb

1 files changed, 80 insertions, 0 deletions

diff --git a/media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c b/media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c
new file mode 100755
index 0000000..746a273
--- /dev/null
+++ b/media/libeffects/lvm/lib/Common/src/Mac3s_Sat_32x16.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2004-2010 NXP Software
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/************************************************************************/
+/*                                                                      */
+/*     Project::                                                        */
+/*     $Author: beq07716 $*/
+/*     $Revision: 1000 $*/
+/*     $Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $*/
+/*                                                                      */
+/************************************************************************/
+
+/**********************************************************************************
+   INCLUDE FILES
+***********************************************************************************/
+
+#include "VectorArithmetic.h"
+#include "LVM_Macros.h"
+
+/**********************************************************************************
+   FUNCTION MAC3S_16X16
+***********************************************************************************/
+
+void Mac3s_Sat_32x16(  const LVM_INT32 *src,
+                     const LVM_INT16 val,
+                     LVM_INT32 *dst,
+                     LVM_INT16 n)
+{
+    LVM_INT16 ii;
+    LVM_INT32 srcval,temp, dInVal, dOutVal;
+
+
+    for (ii = n; ii != 0; ii--)
+    {
+        srcval=*src;
+        src++;
+
+        MUL32x16INTO32(srcval,val,temp,15)
+
+            dInVal  = *dst;
+        dOutVal = temp + dInVal;
+
+
+        if ((((dOutVal ^ temp) & (dOutVal ^ dInVal)) >> 31)!=0)     /* overflow / underflow */
+        {
+            if(temp<0)
+            {
+                dOutVal=0x80000000l;
+            }
+            else
+            {
+                dOutVal=0x7FFFFFFFl;
+            }
+        }
+
+        *dst = dOutVal;
+        dst++;
+    }
+
+    return;
+}
+
+/**********************************************************************************/
+
+
+