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, 135 insertions, 0 deletions

diff --git a/media/libeffects/lvm/lib/Common/lib/Mixer.h b/media/libeffects/lvm/lib/Common/lib/Mixer.h
new file mode 100755
index 0000000..d741980
--- /dev/null
+++ b/media/libeffects/lvm/lib/Common/lib/Mixer.h
@@ -0,0 +1,135 @@
+/*
+ * 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 __MIXER_H__
+#define __MIXER_H__
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#include "LVM_Types.h"
+
+/**********************************************************************************
+   INSTANCE MEMORY TYPE DEFINITION
+***********************************************************************************/
+
+typedef struct
+{
+    LVM_INT32   Alpha;                    /* Time constant. Set by calling application.  Can be changed at any time */
+    LVM_INT32   Target;                   /* Target value.  Set by calling application.  Can be changed at any time */
+    LVM_INT32   Current;                  /* Current value.  Set by the mixer function. */
+    LVM_INT16   CallbackSet;              /* Boolean.  Should be set by calling application each time the target value is updated */
+    LVM_INT16   CallbackParam;            /* Parameter that will be used in the calback function */
+    void        *pCallbackHandle;         /* Pointer to the instance of the callback function */
+    void        *pGeneralPurpose;         /* Pointer for general purpose usage */
+    LVM_Callback pCallBack;               /* Pointer to the callback function */
+} Mix_1St_Cll_t;
+
+typedef struct
+{
+    LVM_INT32   Alpha1;
+    LVM_INT32   Target1;
+    LVM_INT32   Current1;
+    LVM_INT16   CallbackSet1;
+    LVM_INT16   CallbackParam1;
+    void        *pCallbackHandle1;
+    void        *pGeneralPurpose1;
+    LVM_Callback pCallBack1;
+
+    LVM_INT32   Alpha2;                   /* Warning the address of this location is passed as a pointer to Mix_1St_Cll_t in some functions */
+    LVM_INT32   Target2;
+    LVM_INT32   Current2;
+    LVM_INT16   CallbackSet2;
+    LVM_INT16   CallbackParam2;
+    void        *pCallbackHandle2;
+    void        *pGeneralPurpose2;
+    LVM_Callback pCallBack2;
+
+} Mix_2St_Cll_t;
+
+
+/*** General functions ************************************************************/
+
+LVM_UINT32 LVM_Mixer_TimeConstant(LVM_UINT32   tc,
+                                  LVM_UINT16   Fs,
+                                  LVM_UINT16   NumChannels);
+
+
+void MixSoft_1St_D32C31_WRA(    Mix_1St_Cll_t       *pInstance,
+                                const LVM_INT32     *src,
+                                      LVM_INT32     *dst,
+                                      LVM_INT16     n);
+
+void MixSoft_2St_D32C31_SAT(    Mix_2St_Cll_t       *pInstance,
+                                const LVM_INT32     *src1,
+                                const LVM_INT32     *src2,
+                                      LVM_INT32     *dst,
+                                      LVM_INT16     n);
+
+void MixInSoft_D32C31_SAT(      Mix_1St_Cll_t       *pInstance,
+                                const LVM_INT32     *src,
+                                      LVM_INT32     *dst,
+                                      LVM_INT16     n);
+
+/**********************************************************************************
+   FUNCTION PROTOTYPES (LOW LEVEL SUBFUNCTIONS)
+***********************************************************************************/
+
+void Core_MixSoft_1St_D32C31_WRA(   Mix_1St_Cll_t       *pInstance,
+                                    const LVM_INT32     *src,
+                                          LVM_INT32     *dst,
+                                          LVM_INT16     n);
+
+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);
+
+void Core_MixInSoft_D32C31_SAT(     Mix_1St_Cll_t       *pInstance,
+                                    const LVM_INT32     *src,
+                                          LVM_INT32     *dst,
+                                          LVM_INT16     n);
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+/**********************************************************************************/
+
+#endif /* __MIXER_H__ */
+
+
+
+
+
+
+
+
+
+