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, 136 insertions, 0 deletions

diff --git a/media/libeffects/lvm/lib/Common/src/LVC_Mixer_Private.h b/media/libeffects/lvm/lib/Common/src/LVC_Mixer_Private.h
new file mode 100755
index 0000000..d61d670
--- /dev/null
+++ b/media/libeffects/lvm/lib/Common/src/LVC_Mixer_Private.h
@@ -0,0 +1,136 @@
+/*
+ * 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) $
+
+***********************************************************************************/
+
+#ifndef __LVC_MIXER_PRIVATE_H__
+#define __LVC_MIXER_PRIVATE_H__
+
+/**********************************************************************************
+   INCLUDE FILES
+***********************************************************************************/
+
+#include "LVC_Mixer.h"
+#include "VectorArithmetic.h"
+
+/* Instance parameter structure */
+typedef struct
+{
+    /* General */
+    LVM_INT32                       Target;                 /* 32 bit number specifying fractional value of Target Gain */
+    LVM_INT32                       Current;                /* 32 bit number specifying fractional valude of Current Gain */
+    LVM_INT32                       Shift;                  /* Left Shift for Integer part of Gain */
+    LVM_INT32                       Delta;                  /* 32 bit number specifying the fractional value of Delta Gain */
+} Mix_Private_st;
+
+
+
+/**********************************************************************************
+   DEFINITIONS
+***********************************************************************************/
+#define LVCore_MixInSoft_D32C31_SAT    LVCore_InSoft_D32C31_SAT
+#define LVCore_MixSoft_1St_D32C31_WRA  LVCore_Soft_1St_D32C31_WRA
+#define LVCore_MixHard_2St_D32C31_SAT  LVCore_Hard_2St_D32C31_SAT
+
+/**********************************************************************************
+   FUNCTION PROTOTYPES (LOW LEVEL SUBFUNCTIONS)
+***********************************************************************************/
+
+/*** 16 bit functions *************************************************************/
+
+void LVC_Core_MixInSoft_D16C31_SAT( LVMixer3_st *pInstance,
+                                    const LVM_INT16     *src,
+                                          LVM_INT16     *dst,
+                                          LVM_INT16     n);
+
+void LVC_Core_MixSoft_1St_D16C31_WRA( LVMixer3_st *pInstance,
+                                    const LVM_INT16     *src,
+                                          LVM_INT16     *dst,
+                                          LVM_INT16     n);
+
+void LVC_Core_MixHard_2St_D16C31_SAT( LVMixer3_st *pInstance1,
+                                    LVMixer3_st         *pInstance2,
+                                    const LVM_INT16     *src1,
+                                    const LVM_INT16     *src2,
+                                          LVM_INT16     *dst,
+                                          LVM_INT16     n);
+
+/**********************************************************************************/
+/* For applying different gains to Left and right chennals                        */
+/* ptrInstance1 applies to Left channel                                           */
+/* ptrInstance2 applies to Right channel                                          */
+/* Gain values should not be more that 1.0                                        */
+/**********************************************************************************/
+
+void LVC_Core_MixSoft_1St_2i_D16C31_WRA( LVMixer3_st        *ptrInstance1,
+                                         LVMixer3_st        *ptrInstance2,
+                                         const LVM_INT16    *src,
+                                         LVM_INT16          *dst,   /* dst can be equal to src */
+                                         LVM_INT16          n);     /* Number of stereo samples */
+
+/**********************************************************************************/
+/* For applying different gains to Left and right chennals                        */
+/* ptrInstance1 applies to Left channel                                           */
+/* ptrInstance2 applies to Right channel                                          */
+/* Gain values should not be more that 1.0                                        */
+/**********************************************************************************/
+void LVC_Core_MixHard_1St_2i_D16C31_SAT( LVMixer3_st        *ptrInstance1,
+                                         LVMixer3_st        *ptrInstance2,
+                                         const LVM_INT16    *src,
+                                         LVM_INT16          *dst,    /* dst can be equal to src */
+                                         LVM_INT16          n);      /* Number of stereo samples */
+
+
+
+/*** 32 bit functions *************************************************************/
+
+void LVC_Core_MixInSoft_D32C31_SAT( LVMixer3_st *pInstance,
+                                    const LVM_INT32     *src,
+                                          LVM_INT32     *dst,
+                                          LVM_INT16     n);
+
+void LVC_Core_MixSoft_1St_D32C31_WRA( LVMixer3_st *pInstance,
+                                    const LVM_INT32     *src,
+                                          LVM_INT32     *dst,
+                                          LVM_INT16     n);
+
+void LVC_Core_MixHard_2St_D32C31_SAT( LVMixer3_st *pInstance1,
+                                    LVMixer3_st         *pInstance2,
+                                    const LVM_INT32     *src1,
+                                    const LVM_INT32     *src2,
+                                          LVM_INT32     *dst,
+                                          LVM_INT16     n);
+
+/**********************************************************************************/
+
+#endif //#ifndef __LVC_MIXER_PRIVATE_H__
+
+
+
+
+
+
+
+
+
+