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, 69 insertions, 0 deletions

diff --git a/media/libeffects/lvm/lib/Common/src/Core_MixHard_2St_D32C31_SAT.c b/media/libeffects/lvm/lib/Common/src/Core_MixHard_2St_D32C31_SAT.c
new file mode 100755
index 0000000..adac24f
--- /dev/null
+++ b/media/libeffects/lvm/lib/Common/src/Core_MixHard_2St_D32C31_SAT.c
@@ -0,0 +1,69 @@
+/*
+ * 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 "Mixer_private.h"
+#include "LVM_Macros.h"
+
+/**********************************************************************************
+   FUNCTION CORE_MIXHARD_2ST_D32C31_SAT
+***********************************************************************************/
+
+void Core_MixHard_2St_D32C31_SAT(   Mix_2St_Cll_t       *pInstance,
+                                    const LVM_INT32     *src1,
+                                    const LVM_INT32     *src2,
+                                          LVM_INT32     *dst,
+                                          LVM_INT16     n)
+{
+    LVM_INT32  Temp1,Temp2,Temp3;
+    LVM_INT16 ii;
+    LVM_INT16 Current1Short;
+    LVM_INT16 Current2Short;
+
+    Current1Short = (LVM_INT16)(pInstance->Current1 >> 16);
+    Current2Short = (LVM_INT16)(pInstance->Current2 >> 16);
+
+    for (ii = n; ii != 0; ii--){
+        Temp1=*src1++;
+        MUL32x16INTO32(Temp1,Current1Short,Temp3,15)
+        Temp2=*src2++;
+        MUL32x16INTO32(Temp2,Current2Short,Temp1,15)
+        Temp2=(Temp1>>1)+(Temp3>>1);
+        if (Temp2 > 0x3FFFFFFF)
+            Temp2 = 0x7FFFFFFF;
+        else if (Temp2 < - 0x40000000)
+            Temp2 =  0x80000000;
+        else
+            Temp2=(Temp2<<1);
+            *dst++ = Temp2;
+    }
+}
+
+
+/**********************************************************************************/