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, 78 insertions, 0 deletions

diff --git a/media/libeffects/lvm/lib/Common/src/LVC_MixSoft_2St_D16C31_SAT.c b/media/libeffects/lvm/lib/Common/src/LVC_MixSoft_2St_D16C31_SAT.c
new file mode 100755
index 0000000..6184736
--- /dev/null
+++ b/media/libeffects/lvm/lib/Common/src/LVC_MixSoft_2St_D16C31_SAT.c
@@ -0,0 +1,78 @@
+/*
+ * 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.
+ */
+
+/**********************************************************************************
+
+     $Author: beq07716 $
+     $Revision: 1000 $
+     $Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $
+
+***********************************************************************************/
+
+/**********************************************************************************
+   INCLUDE FILES
+***********************************************************************************/
+
+#include "LVC_Mixer_Private.h"
+#include "VectorArithmetic.h"
+
+/**********************************************************************************
+   FUNCTION LVC_MixSoft_2St_D16C31_SAT.c
+***********************************************************************************/
+
+void LVC_MixSoft_2St_D16C31_SAT( LVMixer3_2St_st *ptrInstance,
+                                    const   LVM_INT16       *src1,
+                                            LVM_INT16       *src2,
+                                            LVM_INT16       *dst,
+                                            LVM_INT16       n)
+{
+    Mix_Private_st  *pInstance1=(Mix_Private_st *)(ptrInstance->MixerStream[0].PrivateParams);
+    Mix_Private_st  *pInstance2=(Mix_Private_st *)(ptrInstance->MixerStream[1].PrivateParams);
+
+    if(n<=0)    return;
+
+    /******************************************************************************
+       SOFT MIXING
+    *******************************************************************************/
+    if ((pInstance1->Current == pInstance1->Target)&&(pInstance1->Current == 0)){
+        LVC_MixSoft_1St_D16C31_SAT( (LVMixer3_1St_st *)(&ptrInstance->MixerStream[1]), src2, dst, n);
+    }
+    else if ((pInstance2->Current == pInstance2->Target)&&(pInstance2->Current == 0)){
+        LVC_MixSoft_1St_D16C31_SAT( (LVMixer3_1St_st *)(&ptrInstance->MixerStream[0]), src1, dst, n);
+    }
+    else if ((pInstance1->Current != pInstance1->Target) || (pInstance2->Current != pInstance2->Target))
+    {
+        LVC_MixSoft_1St_D16C31_SAT((LVMixer3_1St_st *)(&ptrInstance->MixerStream[0]), src1, dst, n);
+        LVC_MixInSoft_D16C31_SAT( (LVMixer3_1St_st *)(&ptrInstance->MixerStream[1]), src2, dst, n);
+    }
+    else{
+        /******************************************************************************
+           HARD MIXING
+        *******************************************************************************/
+        if(pInstance2->Shift!=0)
+            Shift_Sat_v16xv16 ((LVM_INT16)pInstance2->Shift,src2,src2,n);
+        if(pInstance1->Shift!=0)
+        {
+            Shift_Sat_v16xv16 ((LVM_INT16)pInstance1->Shift,src1,dst,n);
+            LVC_Core_MixHard_2St_D16C31_SAT( &ptrInstance->MixerStream[0], &ptrInstance->MixerStream[1], dst, src2, dst, n);
+        }
+        else
+            LVC_Core_MixHard_2St_D16C31_SAT( &ptrInstance->MixerStream[0], &ptrInstance->MixerStream[1], src1, src2, dst, n);
+    }
+}
+
+/**********************************************************************************/