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
38void 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