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