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[gb-231r1-is01/Gingerbread_2.3.3_r1_IS01.git] / frameworks / base / media / libeffects / lvm / lib / Common / src / LVC_Core_MixHard_1St_2i_D16C31_SAT.c
1 /*
2  * Copyright (C) 2004-2010 NXP Software
3  * Copyright (C) 2010 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 /**********************************************************************************
19    INCLUDE FILES
20 ***********************************************************************************/
21
22 #include "LVC_Mixer_Private.h"
23 #include "LVM_Macros.h"
24 #include "ScalarArithmetic.h"
25
26
27 /**********************************************************************************
28    FUNCTION LVC_Core_MixHard_1St_2i_D16C31_SAT
29 ***********************************************************************************/
30
31 void LVC_Core_MixHard_1St_2i_D16C31_SAT( LVMixer3_st        *ptrInstance1,
32                                          LVMixer3_st        *ptrInstance2,
33                                          const LVM_INT16    *src,
34                                          LVM_INT16          *dst,
35                                          LVM_INT16          n)
36 {
37     LVM_INT32  Temp;
38     LVM_INT16 ii;
39     LVM_INT16 Current1Short;
40     LVM_INT16 Current2Short;
41     Mix_Private_st  *pInstance1=(Mix_Private_st *)(ptrInstance1->PrivateParams);
42     Mix_Private_st  *pInstance2=(Mix_Private_st *)(ptrInstance2->PrivateParams);
43
44
45     Current1Short = (LVM_INT16)(pInstance1->Current >> 16);
46     Current2Short = (LVM_INT16)(pInstance2->Current >> 16);
47
48     for (ii = n; ii != 0; ii--)
49     {
50         Temp = ((LVM_INT32)*(src++) * (LVM_INT32)Current1Short)>>15;
51         if (Temp > 0x00007FFF)
52             *dst++ = 0x7FFF;
53         else if (Temp < -0x00008000)
54             *dst++ = - 0x8000;
55         else
56             *dst++ = (LVM_INT16)Temp;
57
58         Temp = ((LVM_INT32)*(src++) * (LVM_INT32)Current2Short)>>15;
59         if (Temp > 0x00007FFF)
60             *dst++ = 0x7FFF;
61         else if (Temp < -0x00008000)
62             *dst++ = - 0x8000;
63         else
64             *dst++ = (LVM_INT16)Temp;
65     }
66
67
68 }
69 /**********************************************************************************/