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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    FUNCTION LVCore_MIXSOFT_1ST_D16C31_WRA
28 ***********************************************************************************/
29 #ifdef BUILD_FLOAT
LVC_Core_MixSoft_1St_D16C31_WRA(LVMixer3_FLOAT_st * ptrInstance,const LVM_FLOAT * src,LVM_FLOAT * dst,LVM_INT16 n)30 void LVC_Core_MixSoft_1St_D16C31_WRA( LVMixer3_FLOAT_st *ptrInstance,
31                                     const LVM_FLOAT     *src,
32                                           LVM_FLOAT     *dst,
33                                           LVM_INT16     n)
34 {
35     LVM_INT16   OutLoop;
36     LVM_INT16   InLoop;
37     LVM_INT32   ii;
38     Mix_Private_FLOAT_st  *pInstance=(Mix_Private_FLOAT_st *)(ptrInstance->PrivateParams);
39     LVM_FLOAT   Delta= (LVM_FLOAT)pInstance->Delta;
40     LVM_FLOAT   Current = (LVM_FLOAT)pInstance->Current;
41     LVM_FLOAT   Target= (LVM_FLOAT)pInstance->Target;
42     LVM_FLOAT   Temp;
43 
44     InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */
45     OutLoop = (LVM_INT16)(n - (InLoop << 2));
46 
47     if(Current<Target){
48         if (OutLoop){
49 
50             Temp = Current + Delta;
51             if (Temp > 1.0f)
52                 Temp = 1.0f;
53             else if (Temp < -1.0f)
54                 Temp = -1.0f;
55 
56             Current=Temp;
57             if (Current > Target)
58                 Current = Target;
59 
60             for (ii = OutLoop; ii != 0; ii--){
61                 *(dst++) = (((LVM_FLOAT)*(src++) * (LVM_FLOAT)Current));
62             }
63         }
64 
65         for (ii = InLoop; ii != 0; ii--){
66 
67             Temp = Current + Delta;
68 
69             if (Temp > 1.0f)
70                 Temp = 1.0f;
71             else if (Temp < -1.0f)
72                 Temp = -1.0f;
73 
74             Current=Temp;
75             if (Current > Target)
76                 Current = Target;
77 
78             *(dst++) = (((LVM_FLOAT)*(src++) * Current) );
79             *(dst++) = (((LVM_FLOAT)*(src++) * Current) );
80             *(dst++) = (((LVM_FLOAT)*(src++) * Current) );
81             *(dst++) = (((LVM_FLOAT)*(src++) * Current) );
82         }
83     }
84     else{
85         if (OutLoop){
86             Current -= Delta;
87             if (Current < Target)
88                 Current = Target;
89 
90             for (ii = OutLoop; ii != 0; ii--){
91                 *(dst++) = (((LVM_FLOAT)*(src++) * Current));
92             }
93         }
94 
95         for (ii = InLoop; ii != 0; ii--){
96             Current -= Delta;
97             if (Current < Target)
98                 Current = Target;
99 
100             *(dst++) = (((LVM_FLOAT)*(src++) * Current));
101             *(dst++) = (((LVM_FLOAT)*(src++) * Current));
102             *(dst++) = (((LVM_FLOAT)*(src++) * Current));
103             *(dst++) = (((LVM_FLOAT)*(src++) * Current));
104         }
105     }
106     pInstance->Current=Current;
107 }
108 #else
LVC_Core_MixSoft_1St_D16C31_WRA(LVMixer3_st * ptrInstance,const LVM_INT16 * src,LVM_INT16 * dst,LVM_INT16 n)109 void LVC_Core_MixSoft_1St_D16C31_WRA( LVMixer3_st *ptrInstance,
110                                     const LVM_INT16     *src,
111                                           LVM_INT16     *dst,
112                                           LVM_INT16     n)
113 {
114     LVM_INT16   OutLoop;
115     LVM_INT16   InLoop;
116     LVM_INT16   CurrentShort;
117     LVM_INT32   ii;
118     Mix_Private_st  *pInstance=(Mix_Private_st *)(ptrInstance->PrivateParams);
119     LVM_INT32   Delta=pInstance->Delta;
120     LVM_INT32   Current=pInstance->Current;
121     LVM_INT32   Target=pInstance->Target;
122     LVM_INT32   Temp;
123 
124     InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */
125     OutLoop = (LVM_INT16)(n - (InLoop << 2));
126 
127     if(Current<Target){
128         if (OutLoop){
129             ADD2_SAT_32x32(Current,Delta,Temp);                                      /* Q31 + Q31 into Q31*/
130             Current=Temp;
131             if (Current > Target)
132                 Current = Target;
133 
134             CurrentShort = (LVM_INT16)(Current>>16);                                 /* From Q31 to Q15*/
135 
136             for (ii = OutLoop; ii != 0; ii--){
137                 *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);    /* Q15*Q15>>15 into Q15 */
138             }
139         }
140 
141         for (ii = InLoop; ii != 0; ii--){
142             ADD2_SAT_32x32(Current,Delta,Temp);                                      /* Q31 + Q31 into Q31*/
143             Current=Temp;
144             if (Current > Target)
145                 Current = Target;
146 
147             CurrentShort = (LVM_INT16)(Current>>16);                                 /* From Q31 to Q15*/
148 
149             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);    /* Q15*Q15>>15 into Q15 */
150             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);
151             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);
152             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);
153         }
154     }
155     else{
156         if (OutLoop){
157             Current -= Delta;                                                        /* Q31 + Q31 into Q31*/
158             if (Current < Target)
159                 Current = Target;
160 
161             CurrentShort = (LVM_INT16)(Current>>16);                                 /* From Q31 to Q15*/
162 
163             for (ii = OutLoop; ii != 0; ii--){
164                 *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);    /* Q15*Q15>>15 into Q15 */
165             }
166         }
167 
168         for (ii = InLoop; ii != 0; ii--){
169             Current -= Delta;                                                        /* Q31 + Q31 into Q31*/
170             if (Current < Target)
171                 Current = Target;
172 
173             CurrentShort = (LVM_INT16)(Current>>16);                                 /* From Q31 to Q15*/
174 
175             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);    /* Q15*Q15>>15 into Q15 */
176             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);
177             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);
178             *(dst++) = (LVM_INT16)(((LVM_INT32)*(src++) * (LVM_INT32)CurrentShort)>>15);
179         }
180     }
181     pInstance->Current=Current;
182 }
183 #endif
184 /**********************************************************************************/
185