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
24 /**********************************************************************************
25 FUNCTION LVCore_MIXHARD_2ST_D16C31_SAT
26 ***********************************************************************************/
27 #ifdef BUILD_FLOAT
LVC_Core_MixHard_2St_D16C31_SAT(LVMixer3_FLOAT_st * ptrInstance1,LVMixer3_FLOAT_st * ptrInstance2,const LVM_FLOAT * src1,const LVM_FLOAT * src2,LVM_FLOAT * dst,LVM_INT16 n)28 void LVC_Core_MixHard_2St_D16C31_SAT( LVMixer3_FLOAT_st *ptrInstance1,
29 LVMixer3_FLOAT_st *ptrInstance2,
30 const LVM_FLOAT *src1,
31 const LVM_FLOAT *src2,
32 LVM_FLOAT *dst,
33 LVM_INT16 n)
34 {
35 LVM_FLOAT Temp;
36 LVM_INT16 ii;
37 LVM_FLOAT Current1;
38 LVM_FLOAT Current2;
39 Mix_Private_FLOAT_st *pInstance1 = (Mix_Private_FLOAT_st *)(ptrInstance1->PrivateParams);
40 Mix_Private_FLOAT_st *pInstance2 = (Mix_Private_FLOAT_st *)(ptrInstance2->PrivateParams);
41
42
43 Current1 = (pInstance1->Current);
44 Current2 = (pInstance2->Current);
45
46 for (ii = n; ii != 0; ii--){
47 Temp = (((LVM_FLOAT)*(src1++) * (LVM_FLOAT)Current1)) +
48 (((LVM_FLOAT)*(src2++) * (LVM_FLOAT)Current2));
49 if (Temp > 1.0f)
50 *dst++ = 1.0f;
51 else if (Temp < -1.0f)
52 *dst++ = -1.0f;
53 else
54 *dst++ = Temp;
55 }
56 }
57 #else
LVC_Core_MixHard_2St_D16C31_SAT(LVMixer3_st * ptrInstance1,LVMixer3_st * ptrInstance2,const LVM_INT16 * src1,const LVM_INT16 * src2,LVM_INT16 * dst,LVM_INT16 n)58 void LVC_Core_MixHard_2St_D16C31_SAT( LVMixer3_st *ptrInstance1,
59 LVMixer3_st *ptrInstance2,
60 const LVM_INT16 *src1,
61 const LVM_INT16 *src2,
62 LVM_INT16 *dst,
63 LVM_INT16 n)
64 {
65 LVM_INT32 Temp;
66 LVM_INT16 ii;
67 LVM_INT16 Current1Short;
68 LVM_INT16 Current2Short;
69 Mix_Private_st *pInstance1=(Mix_Private_st *)(ptrInstance1->PrivateParams);
70 Mix_Private_st *pInstance2=(Mix_Private_st *)(ptrInstance2->PrivateParams);
71
72
73 Current1Short = (LVM_INT16)(pInstance1->Current >> 16);
74 Current2Short = (LVM_INT16)(pInstance2->Current >> 16);
75
76 for (ii = n; ii != 0; ii--){
77 Temp = (((LVM_INT32)*(src1++) * (LVM_INT32)Current1Short)>>15) +
78 (((LVM_INT32)*(src2++) * (LVM_INT32)Current2Short)>>15);
79 if (Temp > 0x00007FFF)
80 *dst++ = 0x7FFF;
81 else if (Temp < -0x00008000)
82 *dst++ = - 0x8000;
83 else
84 *dst++ = (LVM_INT16)Temp;
85 }
86 }
87 #endif
88 /**********************************************************************************/
89