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 #include "LVC_Mixer_Private.h"
22 #include "LVM_Macros.h"
23 #include "ScalarArithmetic.h"
24
25 /**********************************************************************************
26 FUNCTION LVCore_MIXSOFT_1ST_D16C31_WRA
27 ***********************************************************************************/
LVC_Core_MixInSoft_D16C31_SAT(LVMixer3_FLOAT_st * ptrInstance,const LVM_FLOAT * src,LVM_FLOAT * dst,LVM_INT16 n)28 void LVC_Core_MixInSoft_D16C31_SAT(LVMixer3_FLOAT_st* ptrInstance, const LVM_FLOAT* src,
29 LVM_FLOAT* dst, LVM_INT16 n) {
30 LVM_INT16 OutLoop;
31 LVM_INT16 InLoop;
32 LVM_INT32 ii, jj;
33 Mix_Private_FLOAT_st* pInstance = (Mix_Private_FLOAT_st*)(ptrInstance->PrivateParams);
34 LVM_FLOAT Delta = pInstance->Delta;
35 LVM_FLOAT Current = pInstance->Current;
36 LVM_FLOAT Target = pInstance->Target;
37 LVM_FLOAT Temp;
38
39 InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */
40 OutLoop = (LVM_INT16)(n - (InLoop << 2));
41
42 if (Current < Target) {
43 if (OutLoop) {
44 Temp = Current + Delta;
45 Current = Temp;
46 if (Current > Target) Current = Target;
47
48 for (ii = OutLoop; ii != 0; ii--) {
49 Temp = *dst + *src++ * Current;
50 *dst++ = LVM_Clamp(Temp);
51 }
52 }
53
54 for (ii = InLoop; ii != 0; ii--) {
55 Temp = Current + Delta;
56 Current = Temp;
57 if (Current > Target) Current = Target;
58
59 for (jj = 4; jj != 0; jj--) {
60 Temp = *dst + *src++ * Current;
61 *dst++ = LVM_Clamp(Temp);
62 }
63 }
64 } else {
65 if (OutLoop) {
66 Current -= Delta;
67 if (Current < Target) Current = Target;
68
69 for (ii = OutLoop; ii != 0; ii--) {
70 Temp = *dst + *src++ * Current;
71 *dst++ = LVM_Clamp(Temp);
72 }
73 }
74
75 for (ii = InLoop; ii != 0; ii--) {
76 Current -= Delta;
77 if (Current < Target) Current = Target;
78
79 for (jj = 4; jj != 0; jj--) {
80 Temp = *dst + *src++ * Current;
81 *dst++ = LVM_Clamp(Temp);
82 }
83 }
84 }
85 pInstance->Current = Current;
86 }
87 /*
88 * FUNCTION: LVC_Core_MixInSoft_Mc_D16C31_SAT
89 *
90 * DESCRIPTION:
91 * Mixer function with support for processing multichannel input.
92 *
93 * PARAMETERS:
94 * ptrInstance Instance pointer
95 * src Source
96 * dst Destination
97 * NrFrames Number of frames
98 * NrChannels Number of channels
99 *
100 * RETURNS:
101 * void
102 *
103 */
LVC_Core_MixInSoft_Mc_D16C31_SAT(LVMixer3_FLOAT_st * ptrInstance,const LVM_FLOAT * src,LVM_FLOAT * dst,LVM_INT16 NrFrames,LVM_INT16 NrChannels)104 void LVC_Core_MixInSoft_Mc_D16C31_SAT(LVMixer3_FLOAT_st* ptrInstance, const LVM_FLOAT* src,
105 LVM_FLOAT* dst, LVM_INT16 NrFrames, LVM_INT16 NrChannels) {
106 LVM_INT16 OutLoop;
107 LVM_INT16 InLoop;
108 LVM_INT32 ii, jj;
109 Mix_Private_FLOAT_st* pInstance = (Mix_Private_FLOAT_st*)(ptrInstance->PrivateParams);
110 LVM_FLOAT Delta = pInstance->Delta;
111 LVM_FLOAT Current = pInstance->Current;
112 LVM_FLOAT Target = pInstance->Target;
113 LVM_FLOAT Temp;
114
115 /*
116 * Same operation is performed on consecutive frames.
117 * So two frames are processed in one iteration and
118 * the loop will run only for half the NrFrames value times.
119 */
120 InLoop = (LVM_INT16)(NrFrames >> 1);
121 /* OutLoop is calculated to handle cases where NrFrames value can be odd.*/
122 OutLoop = (LVM_INT16)(NrFrames - (InLoop << 1));
123
124 if (Current < Target) {
125 if (OutLoop) {
126 Temp = Current + Delta;
127 Current = Temp;
128 if (Current > Target) Current = Target;
129
130 for (ii = OutLoop * NrChannels; ii != 0; ii--) {
131 Temp = *dst + *src++ * Current;
132 *dst++ = LVM_Clamp(Temp);
133 }
134 }
135
136 for (ii = InLoop; ii != 0; ii--) {
137 Temp = Current + Delta;
138 Current = Temp;
139 if (Current > Target) Current = Target;
140
141 for (jj = NrChannels; jj != 0; jj--) {
142 Temp = *dst + *src++ * Current;
143 *dst++ = LVM_Clamp(Temp);
144
145 Temp = *dst + *src++ * Current;
146 *dst++ = LVM_Clamp(Temp);
147 }
148 }
149 } else {
150 if (OutLoop) {
151 Current -= Delta;
152 if (Current < Target) Current = Target;
153
154 for (ii = OutLoop * NrChannels; ii != 0; ii--) {
155 Temp = *dst + *src++ * Current;
156 *dst++ = LVM_Clamp(Temp);
157 }
158 }
159
160 for (ii = InLoop; ii != 0; ii--) {
161 Current -= Delta;
162 if (Current < Target) Current = Target;
163
164 for (jj = NrChannels; jj != 0; jj--) {
165 Temp = *dst + *src++ * Current;
166 *dst++ = LVM_Clamp(Temp);
167
168 Temp = *dst + *src++ * Current;
169 *dst++ = LVM_Clamp(Temp);
170 }
171 }
172 }
173 pInstance->Current = Current;
174 }
175
176 /**********************************************************************************/
177