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 "Mixer_private.h"
23 #include "LVM_Macros.h"
24
25 /**********************************************************************************
26 FUNCTION CORE_MIXSOFT_1ST_D32C31_WRA
27 ***********************************************************************************/
Core_MixSoft_1St_D32C31_WRA(Mix_1St_Cll_FLOAT_t * pInstance,const LVM_FLOAT * src,LVM_FLOAT * dst,LVM_INT16 n)28 void Core_MixSoft_1St_D32C31_WRA( Mix_1St_Cll_FLOAT_t *pInstance,
29 const LVM_FLOAT *src,
30 LVM_FLOAT *dst,
31 LVM_INT16 n)
32 {
33 LVM_FLOAT Temp1,Temp2;
34 LVM_INT16 OutLoop;
35 LVM_INT16 InLoop;
36 LVM_FLOAT TargetTimesOneMinAlpha;
37 LVM_FLOAT CurrentTimesAlpha;
38
39 LVM_INT16 ii;
40
41 InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */
42 OutLoop = (LVM_INT16)(n - (InLoop << 2));
43
44 TargetTimesOneMinAlpha = (1.0f - pInstance->Alpha) * pInstance->Target; /* float * float in float */
45 if (pInstance->Target >= pInstance->Current)
46 {
47 TargetTimesOneMinAlpha += (LVM_FLOAT)(2.0f / 2147483647.0f); /* Ceil*/
48 }
49
50 if (OutLoop != 0)
51 {
52 CurrentTimesAlpha = (pInstance->Current * pInstance->Alpha);
53 pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha;
54
55 for (ii = OutLoop; ii != 0; ii--)
56 {
57 Temp1 = *src;
58 src++;
59
60 Temp2 = Temp1 * (pInstance->Current);
61 *dst = Temp2;
62 dst++;
63 }
64 }
65
66 for (ii = InLoop; ii != 0; ii--)
67 {
68 CurrentTimesAlpha = pInstance->Current * pInstance->Alpha;
69 pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha;
70
71 Temp1 = *src;
72 src++;
73
74 Temp2 = Temp1 * (pInstance->Current);
75 *dst = Temp2;
76 dst++;
77
78 Temp1 = *src;
79 src++;
80
81 Temp2 = Temp1 * (pInstance->Current);
82 *dst = Temp2;
83 dst++;
84
85 Temp1 = *src;
86 src++;
87
88 Temp2 = Temp1 * (pInstance->Current);
89 *dst = Temp2;
90 dst++;
91
92 Temp1 = *src;
93 src++;
94 Temp2 = Temp1 * (pInstance->Current);
95 *dst = Temp2;
96 dst++;
97 }
98 }
99 /**********************************************************************************/
100