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
20 %created_by: sra % (CM/S)
21 %name: Mac3s_Sat_16x16.c % (CM/S)
22 %version: 1 % (CM/S)
23 %date_created: Fri Nov 13 12:07:13 2009 % (CM/S)
24
25 ***********************************************************************************/
26
27 /**********************************************************************************
28 INCLUDE FILES
29 ***********************************************************************************/
30
31 #include "VectorArithmetic.h"
32 #include "LVM_Macros.h"
33
34 /**********************************************************************************
35 FUNCTION Mac3S_16X16
36 ***********************************************************************************/
37
Mac3s_Sat_16x16(const LVM_INT16 * src,const LVM_INT16 val,LVM_INT16 * dst,LVM_INT16 n)38 void Mac3s_Sat_16x16( const LVM_INT16 *src,
39 const LVM_INT16 val,
40 LVM_INT16 *dst,
41 LVM_INT16 n)
42 {
43 LVM_INT16 ii;
44 LVM_INT16 srcval;
45 LVM_INT32 Temp,dInVal;
46
47
48 for (ii = n; ii != 0; ii--)
49 {
50 srcval=*src;
51 src++;
52
53 Temp = (srcval *val)>>15;
54
55 dInVal = (LVM_INT32)*dst;
56
57 Temp = Temp + dInVal;
58
59 if (Temp > 0x00007FFF)
60 {
61 *dst = 0x7FFF;
62 }
63 else if (Temp < -0x00008000)
64 {
65 *dst = - 0x8000;
66 }
67 else
68 {
69 *dst = (LVM_INT16)Temp;
70 }
71
72 dst++;
73 }
74
75 return;
76 }
77
78 /**********************************************************************************/
79
80
81
82