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 "VectorArithmetic.h"
23
24/**********************************************************************************
25   FUNCTION  MSTO2I_SAT_16X16
26***********************************************************************************/
27
28void MSTo2i_Sat_16x16(const LVM_INT16  *srcM,
29                      const LVM_INT16  *srcS,
30                      LVM_INT16  *dst,
31                      LVM_INT16  n )
32{
33    LVM_INT32 temp,mVal,sVal;
34    LVM_INT16 ii;
35
36
37    for (ii = n; ii != 0; ii--)
38    {
39        mVal=(LVM_INT32)*srcM;
40        srcM++;
41
42        sVal=(LVM_INT32)*srcS;
43        srcS++;
44
45        temp = mVal + sVal;
46
47        if (temp > 0x00007FFF)
48        {
49            *dst = 0x7FFF;
50        }
51        else if (temp < -0x00008000)
52        {
53            *dst = - 0x8000;
54        }
55        else
56        {
57            *dst = (LVM_INT16)temp;
58        }
59        dst++;
60
61        temp = mVal - sVal;
62
63        if (temp > 0x00007FFF)
64        {
65            *dst = 0x7FFF;
66        }
67        else if (temp < -0x00008000)
68        {
69            *dst = - 0x8000;
70        }
71        else
72        {
73            *dst = (LVM_INT16)temp;
74        }
75        dst++;
76    }
77
78    return;
79}
80/**********************************************************************************/
81