From 2c8e5cab3faa6d360e222b7a6c40a80083d021ac Mon Sep 17 00:00:00 2001
From: Eric Laurent <elaurent@google.com>
Date: Fri, 9 Jul 2010 12:28:50 -0700
Subject: 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
---
 media/libeffects/lvm/lib/Common/lib/LVM_Macros.h | 130 +++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100755 media/libeffects/lvm/lib/Common/lib/LVM_Macros.h

(limited to 'media/libeffects/lvm/lib/Common/lib/LVM_Macros.h')

diff --git a/media/libeffects/lvm/lib/Common/lib/LVM_Macros.h b/media/libeffects/lvm/lib/Common/lib/LVM_Macros.h
new file mode 100755
index 0000000..8bd363d
--- /dev/null
+++ b/media/libeffects/lvm/lib/Common/lib/LVM_Macros.h
@@ -0,0 +1,130 @@
+/*
+ * 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 _LVM_MACROS_H_
+#define _LVM_MACROS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**********************************************************************************
+   MUL32x32INTO32(A,B,C,ShiftR)
+        C = (A * B) >> ShiftR
+
+        A, B and C are all 32 bit SIGNED numbers and ShiftR can vary from 0 to 64
+
+        The user has to take care that C does not overflow.  The result in case
+        of overflow is undefined.
+
+***********************************************************************************/
+#ifndef MUL32x32INTO32
+#define MUL32x32INTO32(A,B,C,ShiftR)   \
+        {LVM_INT32 MUL32x32INTO32_temp,MUL32x32INTO32_temp2,MUL32x32INTO32_mask,MUL32x32INTO32_HH,MUL32x32INTO32_HL,MUL32x32INTO32_LH,MUL32x32INTO32_LL;\
+         LVM_INT32  shiftValue;\
+        shiftValue = (ShiftR);\
+        MUL32x32INTO32_mask=0x0000FFFF;\
+        MUL32x32INTO32_HH= ((LVM_INT32)((LVM_INT16)((A)>>16))*((LVM_INT16)((B)>>16)) );\
+        MUL32x32INTO32_HL= ((LVM_INT32)((B)&MUL32x32INTO32_mask)*((LVM_INT16)((A)>>16))) ;\
+        MUL32x32INTO32_LH= ((LVM_INT32)((A)&MUL32x32INTO32_mask)*((LVM_INT16)((B)>>16)));\
+        MUL32x32INTO32_LL= (LVM_INT32)((A)&MUL32x32INTO32_mask)*(LVM_INT32)((B)&MUL32x32INTO32_mask);\
+        MUL32x32INTO32_temp= (LVM_INT32)(MUL32x32INTO32_HL&MUL32x32INTO32_mask)+(LVM_INT32)(MUL32x32INTO32_LH&MUL32x32INTO32_mask)+(LVM_INT32)((MUL32x32INTO32_LL>>16)&MUL32x32INTO32_mask);\
+        MUL32x32INTO32_HH= MUL32x32INTO32_HH+(LVM_INT32)(MUL32x32INTO32_HL>>16)+(LVM_INT32)(MUL32x32INTO32_LH>>16)+(LVM_INT32)(MUL32x32INTO32_temp>>16);\
+        MUL32x32INTO32_LL=MUL32x32INTO32_LL+(LVM_INT32)(MUL32x32INTO32_HL<<16)+(LVM_INT32)(MUL32x32INTO32_LH<<16);\
+        if(shiftValue<32)\
+        {\
+        MUL32x32INTO32_HH=MUL32x32INTO32_HH<<(32-shiftValue);\
+        MUL32x32INTO32_mask=((LVM_INT32)1<<(32-shiftValue))-1;\
+        MUL32x32INTO32_LL=(MUL32x32INTO32_LL>>shiftValue)&MUL32x32INTO32_mask;\
+        MUL32x32INTO32_temp2=MUL32x32INTO32_HH|MUL32x32INTO32_LL;\
+        }\
+        else\
+       {\
+        MUL32x32INTO32_temp2=(LVM_INT32)MUL32x32INTO32_HH>>(shiftValue-32);\
+       }\
+       (C) = MUL32x32INTO32_temp2;\
+       }
+#endif
+
+/**********************************************************************************
+   MUL32x16INTO32(A,B,C,ShiftR)
+        C = (A * B) >> ShiftR
+
+        A and C are 32 bit SIGNED numbers.  B is a 16 bit SIGNED number.
+        ShiftR can vary from 0 to 48
+
+        The user has to take care that C does not overflow.  The result in case
+        of overflow is undefined.
+
+***********************************************************************************/
+#ifndef MUL32x16INTO32
+#define MUL32x16INTO32(A,B,C,ShiftR)   \
+        {LVM_INT32 MUL32x16INTO32_mask,MUL32x16INTO32_HH,MUL32x16INTO32_LL;\
+         LVM_INT32  shiftValue;\
+        shiftValue = (ShiftR);\
+        MUL32x16INTO32_mask=0x0000FFFF;\
+        MUL32x16INTO32_HH= ((LVM_INT32)(B)*((LVM_INT16)((A)>>16)));\
+        MUL32x16INTO32_LL= ((LVM_INT32)((A)&MUL32x16INTO32_mask)*(B));\
+        if(shiftValue<16)\
+        {\
+        MUL32x16INTO32_HH=(LVM_INT32)((LVM_UINT32)MUL32x16INTO32_HH<<(16-shiftValue));\
+        (C)=MUL32x16INTO32_HH+(LVM_INT32)(MUL32x16INTO32_LL>>shiftValue);\
+        }\
+        else if(shiftValue<32) {\
+        MUL32x16INTO32_HH=(LVM_INT32)(MUL32x16INTO32_HH>>(shiftValue-16));\
+        (C)=MUL32x16INTO32_HH+(LVM_INT32)(MUL32x16INTO32_LL>>shiftValue);\
+        }\
+        else {\
+        (C)=MUL32x16INTO32_HH>>(shiftValue-16);}\
+        }
+#endif
+
+/**********************************************************************************
+   ADD2_SAT_32x32(A,B,C)
+        C = SAT(A + B)
+
+        A,B and C are 32 bit SIGNED numbers.
+***********************************************************************************/
+#ifndef ADD2_SAT_32x32
+#define ADD2_SAT_32x32(A,B,C)   \
+        {(C)=(A)+(B);\
+         if ((((C) ^ (A)) & ((C) ^ (B))) >> 31)\
+            {\
+                if((A)<0)\
+                    (C)=0x80000000l;\
+                else\
+                    (C)=0x7FFFFFFFl;\
+            }\
+        }
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _LVM_MACROS_H_ */
+
+/*** End of file ******************************************************************/
-- 
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